Fujifilm Business Innovation

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 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.

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.

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.

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 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.