Fujifilm Business Innovation Patente

A developing device includes: a developing container that accommodates a developer; an agitating and transport member that includes a rotation shaft and a helical blade formed in a helical shape in an axial direction with respect to the rotation shaft and that transports the developer in the developing container while agitating the developer; a transport path that accommodates the agitating and transport member and includes a high-speed transport region in which the developer is transported at a high speed and a low-speed transport region that is arranged on a downstream side of the high-speed transport region in a transport direction of the developer and in which the developer is transported at a lower speed than in the high-speed transport region; and a volume detection unit that is installed within a range set in advance from a switching portion that switches from the high-speed transport region to the low-speed transport region to an upstream side in the transport direction or in the low-speed transport region and that detects a volume of the developer in the transport path.

A belt transport device includes a first rotator; an endless belt that is formed with a nip portion in contact with the first rotator and that transports an object to be transported by the first rotator while rotationally moving; a pressing member that is provided on an inner peripheral side of the belt and that forms the nip portion by pressing the belt against the first rotator from the inner peripheral side; one or more second rotators that are provided on the inner peripheral side of the belt and that stretch the belt together with the pressing member; and plural contact members that are provided on the inner peripheral side of the belt, that are disposed side by side in a rotational movement direction of the belt between the pressing member and the second rotator or between two of the second rotators, and that come into contact with an inner peripheral surface of the belt in a state of being supported by a support that supports the pressing member and the second rotator in different manners.

An information processing system includes a processor, in which the processor is configured to use an estimation model that is trained through machine learning, using plural training data that are generated based on each pair data in which a first image of a person before processing and a second image in which a feature portion of the person included in the first image is processed are associated with each other, and in which a type of processing performed on the first image to obtain the second image, processed positional information representing a position of the feature portion in the first image that is processed, and unprocessed positional information representing a position of a feature portion in the first image that is not processed are associated with the first image, to output the type of processing, the processed positional information, and the unprocessed positional information for the first image, to estimate the type of processing, the processed positional information, and the unprocessed positional information from a new image which is the first image not used in the machine learning of the estimation model and includes the person; and output the type of processing, the processed positional information, and the unprocessed positional information for the new image.

An image forming apparatus includes an image holding body, a developing device that causes a developer to adhere to the image holding body, and a supply device that supplies the developer to the developing device and that includes an intersection direction flow path, which is a flow path that extends in an intersection direction and through which the developer passes, and a downward flow path, which is a flow path through which the developer moving through the intersection direction flow path passes and that extends downward so that the developer moving downward passes through the downward flow path, the intersection direction being a direction intersecting a perpendicular direction, in which a partition that partitions a space in the downward flow path and that partitions the space into a space positioned on an upstream side in a movement direction of the developer in the intersection direction flow path and a space positioned on a downstream side in the movement direction.

A particle includes a porous structure including at least one of a cellulose or a cellulose derivative as a main component, and a degradation promoter carried in the porous structure, in which a volume-average particle diameter of particles is 0.05 µm or more and 1,000 µm or less, a BET specific surface area of the particle is 1 m<2>/g or more and 150 m<2>/g or less, a degree of hydrophobicity of the particle is 0.1% or more and 30% or less, and a content of the degradation promoter with respect to 100 parts by mass of the porous structure is 1 part by mass or more and 50 parts by mass or less.

An image forming system includes an endless intermediate transfer body that is wound around plural rolls and moves in a circulation direction, and transports a toner image that is primarily transferred onto an outer peripheral surface; a transfer rotating body that rotates and comes into contact with the intermediate transfer body, and transfers the toner image of the intermediate transfer body onto a medium at a secondary transfer position facing the intermediate transfer body; a counter rotating body that rotates and faces the transfer rotating body while interposing the intermediate transfer body, and forms a potential difference between the transfer rotating body and the counter rotating body; a guide portion that is provided on an upstream side of the secondary transfer position in a transport direction of the medium, and guides the medium to the secondary transfer position; and a movement portion that moves an entire medium contact portion in the guide portion in a direction approaching or separating from the intermediate transfer body while maintaining a posture in a direction intersecting a line connecting a center of the transfer rotating body and a center of the counter rotating body, according to a type of the medium.

A developer container includes a second rotation stopping portion that is farther from a receiving unit than a first rotation stopping portion. The first rotation stopping portion and the second rotation stopping portion respectively come into contact with a first rotation stopper portion and a second rotation stopper portion provided on a body of an image forming apparatus. A spatial allowance between the first rotation stopping portion and the first rotation stopper portion is less than a spatial allowance between the second rotation stopping portion and the second rotation stopper portion.

A developing device includes a rotating member that is formed in a tubular shape, that is provided to be rotatable, that includes one end portion and the other end portion, and that includes an outer peripheral surface to which a developer adheres, plural magnetic poles that are disposed inside the rotating member and that are disposed to be arranged in a rotation direction of the rotating member, a first magnetic member that is disposed outside the rotating member, that is disposed at a position facing the one end portion of the rotating member, that includes a downstream-side end portion, which is an end portion positioned on a downstream side in the rotation direction of the rotating member, and that forms a magnetic field between the first magnetic member and the magnetic poles, and a second magnetic member that is disposed outside the rotating member, that is disposed at a position facing the one end portion of the rotating member, that is disposed to be closer to the other end portion of the rotating member than the first magnetic member is, that forms a magnetic field between the second magnetic member and the magnetic poles, and that includes a facing portion, which is a portion facing the rotating member, in which, in the rotation direction, the facing portion of the second magnetic member is positioned upstream of one of the plural magnetic poles that is positioned upstream of the downstream-side end portion of the first magnetic member in the rotation direction and that is a first magnetic pole counting from the downstream-side end portion.

A recording medium transport device includes a belt member that performs circulatory movement and that transports a recording medium attached to an outer peripheral surface of the belt member, a protruding portion that protrudes from the outer peripheral surface of the belt member, that is provided in a linear shape, and that is disposed in a state of being inclined with respect to a movement direction of the belt member, and a removing member that is disposed in contact with the outer peripheral surface of the belt member and that removes an attachment attached to the outer peripheral surface.

An image forming apparatus includes an electrophotographic photoreceptor, and a charging device including a charging member that charges a surface of the electrophotographic photoreceptor and a cleaning member that is disposed in contact with the charging member, in which the electrophotographic photoreceptor has a conductive substrate and a photosensitive layer disposed on the conductive substrate, and an outermost surface layer of the electrophotographic photoreceptor contains a charge transport material and a polyarylate resin having a dicarboxylic acid unit represented by Formula (A) and a diol unit represented by Formula (B), the cleaning member has a core metal and a foamed elastic layer provided in a helical shape on an outer peripheral surface of the core metal, and a value of a ratio T/W of a thickness T of the foamed elastic layer to a width W of the foamed elastic layer is 0.6 or more and 1.2 or less, <img class="EMIRef" id="a412cc7e-cd38-43bc-91fa-24b29f92f450-ia01" /> <img class="EMIRef" id="a412cc7e-cd38-43bc-91fa-24b29f92f450-ia02" /> in Formula (A), Ar<A1> and Ar<A2> are each independently an aromatic ring which may have a substituent, L<A> is a single bond or a divalent linking group, and n<A1> is 0, 1, or 2, in Formula (B), Ar<B1> and Ar<B2> are each independently an aromatic ring which may have a substituent, L<B> is a single bond, an oxygen atom, a sulfur atom, or -C(Rb<1>)(Rb<2>)-, and n<B1> is 0, 1, or 2, where Rb<1> and Rb<2> are each independently a hydrogen atom, an alkyl group having 1 or more and 20 or less carbon atoms, an aryl group having 6 or more and 12 or less carbon atoms, or an aralkyl group having 7 or more and 20 or less carbon atoms, and Rb<1> and Rb<2> may be bonded to each other to form a cyclic alkyl group.

An electrophotographic photoreceptor includes a conductive substrate, and a photosensitive layer disposed on the conductive substrate, in which an outermost surface layer contains a charge transport material, a polyarylate resin having a dicarboxylic acid unit represented by Formula (A) and a diol unit represented by Formula (B), a polycarbonate resin, and a phenolic compound having 3 or fewer phenolic functional groups and a molecular weight of 300 or more, and a value of a dielectric loss tangent tanδ of the outermost surface layer at a frequency of 1 Hz is 0.50 or less, <img class="EMIRef" id="5f0726ed-ae9a-4c63-85a5-fb38a63c0ad5-ia01" /> <img class="EMIRef" id="5f0726ed-ae9a-4c63-85a5-fb38a63c0ad5-ia02" /> in Formula (A), Ar<A1> and Ar<A2> are each independently an aromatic ring which may have a substituent, L<A> is a single bond or a divalent linking group, and n<A1> is 0, 1, or 2, in Formula (B), Ar<B1> and Ar<B2> are each independently an aromatic ring which may have a substituent, L<B> is a single bond, an oxygen atom, a sulfur atom, or -C(Rb<1>)(Rb<2>)-, and n<B1> is 0, 1, or 2, where Rb<1> and Rb<2> are each independently a hydrogen atom, an alkyl group having 1 or more and 20 or less carbon atoms, an aryl group having 6 or more and 12 or less carbon atoms, or an aralkyl group having 7 or more and 20 or less carbon atoms, and Rb<1> and Rb<2> may be bonded to each other to form a cyclic alkyl group.

An electrophotographic photoreceptor includes a conductive substrate, and a lamination-type photosensitive layer disposed on the conductive substrate and having a charge generation layer and a charge transport layer, in which the charge transport layer contains a polyarylate resin having a dicarboxylic acid unit (A) represented by Formula (A) and a diol unit (B) represented by Formula (B), the charge generation layer contains, as a charge generation material, a chlorogallium phthalocyanine, and a value of a content of a binder resin to a total content of the binder resin and the charge generation material in the charge generation layer is more than 0.4 and less than 0.7,in Formula (A), Ar^A1 and Ar^A2 are each independently an aromatic ring which may have a substituent, L^A is a single bond or a divalent linking group, and n^A1 is 0, 1, or 2,in Formula (B), Ar^B1 and Ar^B2 are each independently an aromatic ring which may have a substituent, L^B is a single bond, an oxygen atom, a sulfur atom, or -C(Rb¹)(Rb²)-, and n^B1 is 0, 1, or 2, where Rb¹ and Rb² are each independently a hydrogen atom, an alkyl group having 1 or more and 20 or less carbon atoms, an aryl group having 6 or more and 12 or less carbon atoms, or an aralkyl group having 7 or more and 20 or less carbon atoms, and Rb¹ and Rb² may be bonded to each other to form a cyclic alkyl group.

An electrophotographic photoreceptor includes a conductive substrate, an undercoat layer disposed on the conductive substrate, and a lamination-type photosensitive layer disposed on the undercoat layer and having a charge generation layer and a charge transport layer, in which the charge transport layer contains a charge transport material and a polyarylate resin, the polyarylate resin contains a dicarboxylic acid unit represented by Formula (A) and a diol unit represented by Formula (B), and an electrostatic capacity of the undercoat layer is 1.0 × 10^-10 F or more and 3.0 × 10^-9 F or less,in Formula (A), Ar^A1 and Ar^A2 are each independently an aromatic ring which may have a substituent, L^A is a single bond or a divalent linking group, and n^A1 is 0, 1, or 2,in Formula (B), Ar^B1 and Ar^B2 are each independently an aromatic ring which may have a substituent, L^B is a single bond, an oxygen atom, a sulfur atom, or -C(Rb¹)(Rb²)-, and n^B1 is 0, 1, or 2, where Rb¹ and Rb² are each independently a hydrogen atom, an alkyl group having 1 or more and 20 or less carbon atoms, an aryl group having 6 or more and 12 or less carbon atoms, or an aralkyl group having 7 or more and 20 or less carbon atoms, and Rb¹ and Rb² may be bonded to each other to form a cyclic alkyl group.

A transportation device includes a first transporter (61), a second transporter (62) movable toward and away from the first transporter (61) between a contact position and a separate position to hold a to-be-transported object (P) between the second transporter (62) and the first transporter (61) in the contact position, and a transportation unit (65) that transports the to-be-transported object (P) to a nip area (NP) where the first transporter (61) and the second transporter (62) are to hold the to-be-transported object (P) therebetween while the second transporter (62) is located in the separate position. The transportation unit (65) transports the to-be-transported object (P) along the first transporter (61) to the nip area (NP) while the second transporter (62) is located in the separate position. The second transporter (62) moves from the separate position to the contact position to hold the to-be-transported object (P) between the second transporter (62) and the first transporter (61) to transport the to-be-transported object (P).

An electrophotographic photoreceptor includes a conductive substrate, and a photosensitive layer disposed on the conductive substrate, in which an outermost surface layer contains a first resin, a second resin, a charge transport material, and an antioxidant, at least one of the first resin or the second resin has a constitutional unit including a biphenyl represented by Formula (BPa), at least one of the charge transport material or the antioxidant has at least one of the biphenyl represented by Formula (BPa) or a biphenyl represented by Formula (BPb) in a molecule, and in a case where the number of the biphenyls per unit molecular weight of each of the first resin, the second resin, the charge transport material, and the antioxidant is denoted by BP1, BP2, BP3, and BP4, and in a case where a proportion (% by mass) of each of the first resin, the second resin, the charge transport material, and the antioxidant in a total amount of the first resin, the second resin, the charge transport material, and the antioxidant is denoted by MP1, MP2, MP3, and MP4, a relationship of 0.0 ≤ (BP1 × MP1 + BP2 × MP2)/(BP3 × MP3 + BP4 × MP4) ≤ 3.0 is satisfied,in Formula (BPa), j is an integer of 0 or greater and 4 or less, j pieces of R¹'s are each independently a methyl group or an ethyl group, k is an integer of 0 or greater and 4 or less, and k pieces of R²'s are each independently a methyl group or an ethyl group, where a plurality of methyl groups and/or ethyl groups may be linked to each other to form a ring,in Formula (BPb), m is an integer of 0 or greater and 4 or less, m pieces of R³'s are each independently a methyl group or an ethyl group, n is an integer of 0 or more and 5 or less, and n pieces of R⁴'s are each independently a methyl group or an ethyl group, where a plurality of methyl groups and/or ethyl groups may be linked to each other to form a ring.

An electrophotographic photoreceptor includes a conductive substrate, a charge generation layer disposed on the conductive substrate, and a charge transport layer disposed on the charge generation layer, in which the charge transport layer contains a phenolic compound, a polyarylate resin, a polycarbonate resin, and a charge transport material, and each of a vector distance DIS<HT> (J/cm<3>)<1/2> between an HSP value of the charge transport material and an HSP value of the polyarylate resin, and a vector distance DIS<PC> (J/cm<3>)<1/2> between the HSP value of the polycarbonate resin and the HSP value of the polyarylate resin, which are calculated based on a Hansen solubility parameter, satisfies Expression (1) and Expression (2), DIS HT ≤ 3.9 , <img class="EMIRef" id="6beff716-10d4-435b-ba07-f341b870d38d-ia01" /> 9.2 ≤ DIS PC < 12.0 . <img class="EMIRef" id="6beff716-10d4-435b-ba07-f341b870d38d-ia02" />

An electrophotographic photoreceptor includes a conductive substrate, and a photosensitive layer disposed on the conductive substrate, in which an outermost surface layer contains a charge transport material, a polyarylate resin, and silicone oil, and a content of the silicone oil is 0.001 ppm or more and 15000.000 ppm or less with respect to the outermost surface layer, and a residual amount of an aromatic carboxylic acid halide per unit mass of the outermost surface layer is 15 × 10^-8 mol/g or less.

An electrophotographic photoreceptor includes a conductive substrate, and a photosensitive layer disposed on the conductive substrate, in which an outermost surface layer contains a charge transport material, a polyarylate resin having at least one dicarboxylic acid unit selected from the group composed of a dicarboxylic acid unit (A2) represented by Formula (A2), a dicarboxylic acid unit (A3) represented by Formula (A3), a dicarboxylic acid unit (A4) represented by Formula (A4), and a dicarboxylic acid unit (A5) represented by Formula (A5) and a diol unit represented by Formula (B), and a polycarbonate resin, and a weight-average molecular weight MwA of the polyarylate resin and a weight-average molecular weight MwB of the polycarbonate resin satisfy -14 ≤ 100 × (MwA - MwB)/MwA ≤ 14, <img class="EMIRef" id="41f03b08-3c96-4836-9f2c-f44c61dd5bcc-ia01" /> <img class="EMIRef" id="41f03b08-3c96-4836-9f2c-f44c61dd5bcc-ia02" /> <img class="EMIRef" id="41f03b08-3c96-4836-9f2c-f44c61dd5bcc-ia03" /> <img class="EMIRef" id="41f03b08-3c96-4836-9f2c-f44c61dd5bcc-ia04" /> <img class="EMIRef" id="41f03b08-3c96-4836-9f2c-f44c61dd5bcc-ia05" /> in Formula (A2), n<201> and n<202> are each independently an integer of 0 or greater and 4 or less, and n<201> pieces of Ra<201>'s and n<202> pieces of Ra<202>'s are each independently an alkyl group having 1 or more and 10 or less carbon atoms, an aryl group having 6 or more and 12 or less carbon atoms, or an alkoxy group having 1 or more and 6 or less carbon atoms, in Formula (A3), n<301> and n<302> are each independently an integer of 0 or greater and 4 or less, and n<301> pieces of Ra<301>'s and n<302> pieces of Ra<302>'s are each independently an alkyl group having 1 or more and 10 or less carbon atoms, an aryl group having 6 or more and 12 or less carbon atoms, or an alkoxy group having 1 or more and 6 or less carbon atoms, in Formula (A4), n<401> is an integer of 0 or greater and 6 or less, and n<401> pieces of Ra<401>'s are each independently an alkyl group having 1 or more and 10 or less carbon atoms, an aryl group having 6 or more and 12 or less carbon atoms, or an alkoxy group having 1 or more and 6 or less carbon atoms, in Formula (A5), n<501>, n<502>, and n<503> are each independently an integer of 0 or greater and 4 or less, and n<501> pieces of Ra<501>'s, n<502> pieces of Ra<502>'s, and n<503> pieces of Ra<503>'s are each independently an alkyl group having 1 or more and 10 or less carbon atoms, an aryl group having 6 or more and 12 or less carbon atoms, or an alkoxy group having 1 or more and 6 or less carbon atoms, in Formula (B), Ar<B1> and Ar<B2> are each independently an aromatic ring which may have a substituent, L<B> is a single bond, an oxygen atom, a sulfur atom, or -C(Rb<1>)(Rb<2>)-, and n<B1> is 0, 1, or 2, where Rb<1> and Rb<2> are each independently a hydrogen atom, an alkyl group having 1 or more and 20 or less carbon atoms, an aryl group having 6 or more and 12 or less carbon atoms, or an aralkyl group having 7 or more and 20 or less carbon atoms, and Rb<1> and Rb<2> may be bonded to each other to form a cyclic alkyl group.

A recording medium transport device includes a belt member that performs circulatory movement, that includes a hole portion for causing air to pass from an outer peripheral surface side toward an inner peripheral surface side of the belt member, and that transports a recording medium attached to an outer peripheral surface and a protruding portion that is provided in a state of protruding from the outer peripheral surface of the belt member and that is provided to surround the hole portion.

An information processing system includes a processor configured to: acquire correspondence information in which a page number assigned to image data and a region in the image data are associated with each other; acquire scan data obtained by reading a printed matter; and in a case where the scan data includes a first page group and a second page group, set a region in which an inspection is to be executed in a scan image included in the first page group based on a page number in the first page group, which is assigned to the scan image included in the first page group, and the correspondence information, and set a region in which an inspection is to be executed in a scan image included in the second page group based on a page number in the second page group, which is assigned to the scan image included in the second page group, and the correspondence information.

An inspection apparatus includes a processor configured to: display a first text string decoded from an inspection region of an image obtained by scanning a printed matter, in a first region on a check screen for an inspection result; and read out document data corresponding to the inspection region from a storage region and display the document data as a second text string in a second region adjacent to the first region.

An electrophotographic photoreceptor includes a conductive substrate, and a photosensitive layer disposed on the conductive substrate, in which an outermost surface layer contains a charge transport material, two or more kinds of resins, and a phenolic compound, and RzJIS on an outer peripheral surface is 0.1 nm or more and 100 nm or less.

An information processing system includes a processor configured to input new input information including information related to a print job to be newly processed to a trained model that is trained in advance to output, in a case where input information including information related to a print job is input, information related to a color difference between a printed image formed on a printed matter by executing the print job and a target image that is a printing target in the print job, and output information related to a color difference between a printed image formed by executing the print job to be newly processed and a target image that is a printing target in the print job to be newly processed.

A toner cartridge includes a new-toner accommodating portion that accommodates new toner; a waste-toner accommodating portion that is disposed on a -H side with respect to the new-toner accommodating portion and that accommodates waste toner; a supplying portion that is provided at the new-toner accommodating portion and that connects the new-toner accommodating portion to outside; and a hole portion that is provided at an end portion of the waste-toner accommodating portion, the end portion being situated on a +H side of the waste-toner accommodating portion, and that connects the waste-toner accommodating portion to outside, in which, of walls of the waste-toner accommodating portion, the walls being situated on a +W side of the waste-toner accommodating portion, a wall that is situated at a position where the wall overlaps the hole portion in an apparatus up-down direction has a curved portion that at least partly protrudes toward the +W side of the waste-toner accommodating portion.

An optical device includes a light emitting unit (17) that has plural light emitting elements to irradiate, with light, each of plural divided regions (231-242) into which an irradiation region is divided and to emit the light with which an object is irradiated, a light receiving unit (18) that has plural light receiving elements to receive reflected light of the light with which the object is irradiated, and a light emission control unit that controls, in a region in which a light-receiving region of the reflected light in the object does not overlap with an irradiation region of the light with which the object is irradiated, light emission of the light with which the divided region, which is included in a target region (211) corresponding to the irradiation region, is irradiated.

An electrophotographic photoreceptor includes a conductive substrate, a first undercoat layer that is provided on the conductive substrate, a second undercoat layer that is provided on the first undercoat layer, and a photosensitive layer that is provided on the second undercoat layer, in which the first undercoat layer contains at least one electron transport material selected from the group consisting of a compound represented by Formula (1), a compound represented Formula (2), and a compound represented by Formula (3), and a binder resin, and a content of silica particles in the first undercoat layer is 0% by mass or 5% by mass or less, and the second undercoat layer contains at least one electron transport material selected from the group consisting of the compound represented by Formula (1), the compound represented Formula (2), and the compound represented by Formula (3), silica particles, and a binder resin, and a content of the silica particles in the second undercoat layer is larger than the content of the silica particles in the first undercoat layer. <img class="EMIRef" id="a3a5872a-68e7-4ae1-a40e-8007dcaf9135-ia01" /> <img class="EMIRef" id="a3a5872a-68e7-4ae1-a40e-8007dcaf9135-ia02" /> <img class="EMIRef" id="a3a5872a-68e7-4ae1-a40e-8007dcaf9135-ia03" /> In Formula (1), R<11>, R<12>, R<13>, R<14>, R<15>, R<16>, R<17>, and R<18> each independently represent a hydrogen atom, an alkyl group, an alkoxy group, an aralkyl group, an aryl group, an aryloxy group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkoxycarbonylalkyl group, an aryloxycarbonylalkyl group, or a halogen atom, R<11> and R<12>, R<12> and R<13>, or R<13> and R<14> may be each independently linked to each other to form a ring, and R<15> and R<16>, R<16> and R<17>, or R<17> and R<18> may be each independently linked to each other to form a ring. In Formula (2), R<21>, R<22>, R<23>, R<24>, R<25>, R<26>, R<27>, and R<28> each independently represent a hydrogen atom, an alkyl group, an alkoxy group, an aralkyl group, an aryl group, an aryloxy group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkoxycarbonylalkyl group, an aryloxycarbonylalkyl group, or a halogen atom, R<21> and R<22>, R<22> and R<23>, or R<23> and R<24> may be each independently linked to each other to form a ring, and R<25> and R<26>, R<26> and R<27>, or R<27> and R<28> may be each independently linked to each other to form a ring. In Formula (3), R<31>, R<32>, R<33>, R<34>, R<35>, R<36>, R<37> , and R<38> each independently represent a hydrogen atom, an alkyl group, an alkoxy group, an aralkyl group, an aryl group, an alkoxycarbonyl group, or a halogen atom.

A binding processing device includes: a paper support unit that supports a paper bundle; a pressing unit that presses the paper bundle; and a binding processing unit that performs binding processing by moving binding teeth toward the paper bundle to apply pressure to the paper bundle, the binding processing unit moving from a binding position of the paper bundle while the paper bundle is being pressed by the pressing unit.

A binding processing device includes: a binding processing unit that performs binding processing by moving binding teeth toward a paper bundle to apply pressure to the paper bundle; and a control unit that controls a movement of the binding processing unit, in which the control unit increases a pressure-applying force of the binding teeth in a case where movement of the binding teeth in the binding processing of the paper bundle does not reach a predetermined amount of movement.

A sheet accommodation device (50) includes: a sheet accommodation body (51) that accommodates a sheet and is mounted in an apparatus main body (1a) to be pullable out from and pullable into the apparatus main body; an engaging unit (77) that is provided on any one of the apparatus main body or the sheet accommodation body; and a pulling-in unit (80) that is provided on the other of the apparatus main body or the sheet accommodation body and that has a guide groove (91) guiding a pulling-in operation of the sheet accommodation body by being engaged with the engaging unit, the guide groove being provided with a resistance force applying portion (910) that applies a resistance force to the pulling-in operation of the sheet accommodation body.

An image log management system includes multiple devices that each store a block chain including a block having a transaction record including an image log that is an image datum representing a processing target datum, each execute a mining process for adding a new block to the block chain, and are connected to be able to communicate with each other, in which the image log management system includes: a processor configured to: receive a processing request for executing a process related to multiple processing target data; before the process related to the processing request is completed, generate a complete transaction record including image logs of the processing target data related to the processing request, the complete transaction record serving as the transaction record; transmit the complete transaction record to the multiple devices; in response to the process related to the processing request being aborted after the complete transaction record is transmitted to the multiple devices and before the process related to the processing request is completed, generate a partial transaction record including an image log of a processed processing target datum of the processing target data and not including an image log of an unprocessed processing target datum of the processing target data, the partial transaction record serving as the transaction record, the partial transaction record performing a function of excluding the complete transaction record from a target for the mining process in response to the transaction record pending the mining process including the complete transaction record and the partial transaction record that are related to one processing request; and transmit the partial transaction record to the multiple devices.

An optical scanning device includes a scanning unit that performs scanning by disposing plural light emitting element groups, each of which includes plural light emitting elements arranged along a main scanning direction, along the main scanning direction so as to face a scanning target object and causing each of the light emitting element groups to emit light based on image information, and a drive unit that drives each of the light emitting element groups of the scanning unit for each scanning period, in which the drive unit divides the plural light emitting element groups into plural sets, and varies a timing of a non-scanning period set between the scanning periods in at least two sets of the light emitting element groups divided into the plural sets.

An image processing apparatus includes an acquisition unit that performs an acquisition process of an image, a transmission unit that performs a transmission process of the image acquired by the acquisition unit, and a processor configured to, in a case in which a user operation that is an operation of a user, which is performed in a case in which a new job different from an executing job that is a job being executed in the image processing apparatus is executed, is present, stop the executing job according to an execution status of the executing job.

An image forming apparatus includes a photoreceptor that has a surface layer in which a transmittance of light having a wavelength of 1,000 nm is 5% or more and 95% or less, a charging device that charges a surface of the photoreceptor, an electrostatic latent image forming device that forms an electrostatic latent image on the charged surface of the photoreceptor, a developing device that develops the electrostatic latent image formed on the surface of the photoreceptor with a developer containing a toner to form a toner image, a transfer device that transfers the toner image to a surface of a recording medium, and a photoreceptor cleaning device that has a cleaning blade coming into contact with the surface of the photoreceptor to clean the surface of the photoreceptor, in which a contact portion of the cleaning blade coming into contact with the photoreceptor contains a polyurethane rubber that is obtained by polymerizing at least a polyol component and a polyisocyanate component, a ratio M100/Re of a 100% modulus M100 (MPa) to an impact resilience coefficient Re (%) is 0.25 or more, the impact resilience coefficient Re is less than 25%, and a tensile stress with a 200% strain at a temperature of 23°C is 15 MPa or more.

A sheet transport device (14) includes a sheet placing unit (28) on which a sheet (12) to be transported is placed, plural first detection units (100, 101, 102, 103) that detect the sheet placed on the sheet placing unit, a second detection unit (104, 105, 106, 107) that detects the sheet placed on the sheet placing unit via a detection method different from a detection method of the first detection unit, and a plurality of support units (81, 82, 83) to which the first and second detection units are attached, in which the plurality of first detection units are attached to the same support unit that is attachable to and detachable from the sheet placing unit.

A belt unit (F) includes an endless member (1) that is rotated, a support member (4) that supports the endless member, a counter member (Fp) that is disposed to face the support member with the endless member interposed therebetween and is in contact with the endless member at a predetermined first contact pressure, a heating section (2a) that heats the endless member, and a control unit (C) that starts heating in the heating section in a case where rotation of the endless member is started, and controls at least one of the support member or the counter member to control a contact pressure between the endless member and the counter member to a second contact pressure higher than the first contact pressure.

A paper feeding device includes a regulation member that includes an abutting portion abutting a leading end of a supplied paper sheet to regulate a transportation start position of the paper sheet and of which the abutting portion moves in a transportation direction of the paper sheet and a detection unit that detects presence or absence of the paper sheet at a position to which the paper sheet is returned in a case where the paper sheet is returned by the regulation member.

An electrostatic charge image developing toner contains toner particles containing a binder resin, a release agent, and resin particles forming a domain inside the toner particles, in which the binder resin includes a polyester resin, an average ester group concentration c1 of the binder resin is 25% by mass or more and 48% by mass or less, and in a case where an ester group concentration of the resin particles is denoted by c2, a value of c2/c1 is 0.30 or more and 0.70 or less.

An information processing system includes: a functional configuration unit; and a processor, in which the processor is configured to receive, from a user, operating software, which is software for operating the functional configuration unit, and command data for the functional configuration unit, operate the functional configuration unit based on the operating software received from the user, and cause the functional configuration unit to execute a command included in the command data.

An image forming system includes a processor configured to: set a usage right corresponding to the time of a concluded usage contract period; cause the usage right to expire for the amount of time used out of the set usage right; and if the usage right has expired entirely, activate a use-prohibited state that prohibits use of at least some functions of the system.

An electrophotographic photoreceptor includes a conductive substrate, a charge generation layer that is disposed on the conductive substrate, a charge transport layer that is disposed on the charge generation layer, and an inorganic protective layer that is disposed on the charge transport layer, in which a capacitance (X1) of the charge transport layer per unit area is 0.90 × 10<-6> (F/m<2>) or more and 1.90 × 10<-6> (F/m<2>) or less, and a capacitance (X2) of the inorganic protective layer per unit area is 2.40 × 10<-5> (F/m<2>) or more and 1.10 × 10<-4> (F/m<2>) or less.