Canon Production Printing Patente

Method for loading a print medium wound up as a roll in a printer wherein the method comprises the step of selecting by means of a user interface of the printer a manual media loading of the print medium instead of a default automatic media loading of the print medium. Upon receiving a trigger for automatic media loading, the print controller executes a default automatic media loading procedure, and upon receiving a selection of manual media loading, the print controller executing a manual media loading procedure.

A method of printing 3D structures distributed on a print medium on a scanning printer in a scanning direction, comprising the steps of printing one array (36) of out-of-surface pillars to have a first common angle with a surface of the print medium, and printing a neighbouring array (37) of out-of-surface pillars to have a second common angle with the surface of the print medium, wherein a direction of a vector component of a projection of a pillar of the neighbouring array to the surface of the print medium in the scanning direction is opposite to a direction of a vector component of a projection of a pillar of the one array to the surface of the print medium in the scanning direction.

A method of printing 3D structures spaced apart from each other and distributed across a 2D background image on a scanning printer comprises the steps of printing swaths for the 3D structures at a low resolution to create 3D structures of a predetermined height, printing swaths for the background image in high resolution, being a manifold of the low resolution. A number of passes for completing a segment of the background image is less than a number of passes for completing a segment of structures. In certain high resolution passes printing of both the background image and the 3D structures is combined, said passes being separated from one another by a number of low resolution passes.

A method for a UV curable printer comprising a medium support surface for supporting the print media, a print head assembly for ejecting droplets of structure ink, white ink and coloured ink forming a relief print on the print media and a print controller for controlling the printing of the relief print in layers, each layer to be deposited in a predetermined plurality of passes of the print head assembly over the medium support surface. The print controller receives a print job comprising a colour image with colour information per pixel comprising a colour per pixel which is intended to be achieved by depositing the coloured ink, and a height image with height information per pixel comprising a height per pixel which is intended to be achieved by depositing a plurality of elevation layers of structure ink. The print controller determines besides the plurality of elevation layers at least one reflective layer of white ink and at least coloured layer of coloured ink to form the colour image. The print head assembly subsequently printing the plurality of elevation layers, the at least one white layer and the at least one colour layer. The print controller creates a last in time elevation layer intended to be printed in the predetermined plurality of passes, wherein the last in time elevation layer is formed by droplets of structure ink having a fixed coverage per pixel in a last pass of the last in time elevation layer.

The present invention relates to a print method for printing multilayer prints, wherein an intermediate layer is provided between a first and a third layer. The present invention further relates to a printer suitable for performing such a method. The present invention further relates to a software product.

A method for a UV curable printer (5) comprising a medium support surface (11) for supporting the print media, a print head assembly for ejecting droplets of structure ink (S), white ink and coloured ink forming a relief print on the print media and a print controller for controlling the printing of the relief print in layers. Each layer is deposited in a predetermined plurality of passes of the print head assembly over the medium support surface. The print controller receives a print job comprising a colour image with colour information per pixel comprising a colour per pixel which is intended to be achieved by depositing the coloured ink, and a height image with height information per pixel comprising a height per pixel which is intended to be achieved by depositing a plurality of elevation layers of structure ink. The print controller determines besides the plurality of elevation layers at least one anti-contouring layer of structure ink to prevent contouring artefacts and at least coloured layer of coloured ink to form the colour image. The print head assembly subsequently prints the plurality of elevation layers, the at least one anti-contouring layer and the at least one colour layer. The print controller creating a last in time elevation layer intended to be printed in the predetermined plurality of passes, wherein the last in time elevation layer is formed by droplets of structure ink and white ink.

A method of printing on a print medium by an inkjet printer, the method comprising the steps of receiving a print job of a digital image to be printed on the print medium, receiving an identification of at least one part of the digital image to be printed on a corresponding part of the print medium for which a specialty ink is intended to be deposited which specialty ink is not available in the inkjet printer, printing the digital image together with a plurality of spaced apart, out-of-plane structures at the corresponding part of the print medium, applying an excess of the specialty ink to the printed structures, wiping off superfluous specialty ink so that the specialty ink only remains in-between the printed structures; and drying the printed medium.

The invention relates to a method for printing a structure. The invention further relates to an object having a structure. In addition, the invention relates to an ink set. The invention also relates to a printing apparatus.

An improved method for determining the positional deviations of nozzles in a printhead array using only a single test pattern is provided by means of the steps of: - printing a test pattern, wherein preferably neighboring nozzles jet non-simultaneously; - sensing the test pattern (30) to determine an array of detected droplet positions (37, 38); - determining an array of nominal nozzle positions (41-45) based on the detected droplet positions (37, 38) and their respective jetting times; - determining a common rotation deviation parameter (Rz1) corresponding to a rotation of the printhead array (1) with respect to a scanning direction (Y) based on the detected droplet positions (37, 38); - transforming the array of nominal nozzle positions (41-45) to compensate for the common rotation deviation parameter (Rz1); - determining positional deviations (dX', dY') of nozzles (21-26) in the printhead array (1) by comparing the transformed array of nominal nozzle positions (41-45) to a reference.

A method for generating print files for a 3D object to be printed in layers on top of each other by means of a 3D printer, the method comprising the steps of a) determining the print files from data input including an intended geometry and colour information, b) simulating a print process using a thin-film equation to predict a geometry of the 3D object to be printed, c) updating the print files based on a deviation between a geometry predicted by the simulation and the intended geometry included in the data input, and d) repeating steps b) and c) until a required accuracy of the predicted geometry is achieved.

An improved method for winding print media (5-7) onto a take-up roller (33) which allows for a wider range print media to be tightly wound up, specifically with a wider range of bending stiffnesses. The method comprises the steps of:- forming a blouse (28) in the print medium (5-7) upstream of the take-up roller (33);- clamping the print medium (5-7) by means of a clamp (30) between the blouse (28) and the take-up roller (33), when the print medium (5-7) is fed into the blouse (28) and when the take-up roller (33) is prevented from rotating;- releasing the clamp (30) when the take-up roller (33) is rotated to wind up print medium (5-7) from the blouse (28),characterized by the step of rotating the take-up roller (33) to adjust a tension in the print medium (5-7) between the blouse (28) and the take-up roller (33) while clamping the print medium (5-7).

A method for a printer (5) comprising a medium support surface (11) for supporting the print media, a print head assembly for ejecting colour inks (CMYKW) and varnish ink (V) forming a print on the print media and a print controller for controlling the printing of images on the print media in multiple layers. The print job comprises a colour image, a height image with height information per pixel of the colour image and a gloss image with gloss information per pixel of the colour image. The print head assembly subsequently prints the elevation layers, the anti-contouring layers, the white layers, the at least one colour ink layer and the at least one overcoat layer on the print media. The print controller creates multiple inverse anti-contouring layers, wherein each pixel value of the multiple inverse anti-contouring layers is a complementary value of the corresponding pixel in the anti-contouring layers with respect to a maximum of ink pixels determined to be printed on top of each other in the anti-contouring layers. The print head assembly prints the multiple inverse anti-contouring layers between the at least one colour ink layer and the at least one overcoat layer.

Method and printing system for printing layers of at least one resin (25) by means of a printer (1). The printer (1) comprises an inkjet printing assembly which has a plurality of nozzles and configured to jet the layers of the at least one resin (25) in order to form a three-dimensional object, and to jet wrapping material (14) to enclose the three-dimensional object during printing of the three-dimensional object, and a radiation curing system (16) for radiation curing the at least one jetted resin. The method comprises the steps of jetting multiple layers of the wrapping material for enclosing multiple layers of the at least one resin to be jetted, jetting multiple layers of the at least one resin until a total thickness of the multiple jetted layers is sufficiently thick to let the at least one resin comprised in the multiple layers flow strongly enough to cover a full area enclosed by the already jetted multiple layers of the wrapping material, and curing the multiple jetted layers of the at least one resin altogether by the radiation curing system.

A printer is configured to deposit stacks of printed print media in multiple output stackers. The printer comprises a print engine for printing on the print media and a print controller comprising a print job queue comprising print jobs to be printed. Each print job comprises a first print job property which is an indication of a output stacker for depositing the printed sheets of the print job. The print controller comprises at least one stacker allocation algorithm for automatically allocating an output stacker for depositing the printed sheets of the print job. One of the at least one stacker allocation algorithm is determined to be a default stacker allocation algorithm. The print controller is configured to deposit the printed sheets of the print job to the output stacker indicated by a non-empty value of the first print job property and to deposit the printed sheets of the print job to the output stacker allocated by the default stacker allocation algorithm when the first print job property has no value.The present invention is also related to a method accordingly.

Method for a printing system for processing a print job comprising the print data and the plurality of print job settings. Automatically an area of the recording medium is established that is deemed to be removed or made invisible during the at least one finishing action by a finisher. A digital object is retrieved from memory of the printer which is used for checking and monitoring at least one characterization of the desired end product. The print data are printed and also the digital object is printed at the automatically established area.

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A method of handling a sheet defect error in a duplex print process wherein media sheets (12, 14, 18) are successively supplied along a feed path (10) and are moved past a print engine (16) where a first image is printed on a first side of each sheet in a first print pass, the sheets are then returned, via a duplex loop (24) that contains a sheet flipping mechanism (26), to the feed path (10) upstream of the print engine (16) so that a second image can be printed on a second side of each sheet in a second print pass, the finished sheets (18) being then discharged in a predetermined page sequence, and wherein, when a sheet defect is found a first print pass of a sheet (s16), the defective sheet is diverted into an eject path (32) downstream of the print engine (16), and a print pass for an immediate successor (s3) of the defective sheet is skipped, characterized in that the subsequent semi-finished sheets (14) are recirculated in the duplex loop (24) while the supply of fresh sheets (12) into the feed path (10) is interrupted, and duplex printing is resumed during or after recirculating the subsequent semi-finished sheets (14).

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The present invention relates to a fixation unit (1) for use in a printing apparatus comprising a substantially closed box for enclosing a heated space, the substantially closed box (2) comprising an entry opening (3) and an exit opening (4) for enabling transport of a print substrate through the substantially closed box, a heating element (11) arranged for heating the heated space enclosed by the substantially closed box, a transport mechanism (5-9) for engaging a sheet of the print substrate from the entry opening to the exit opening of the substantially closed box, wherein the transport mechanism comprises a nip (7) of two belts (6, 6') that are pressed together and run concurrently and in the same direction, the belts being impermeable to any ink component.The present invention further relates to a printer comprising such fixation unit and a printing method using such fixation unit.

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The present invention relates to an aqueous reaction liquid composition comprising an anti-deforming agent. selected from the group consisting of a choline salt (formate, acetate, chloride), a guanidine salt (formate, acetate, chloride), trimethylglycine (betaine), potassium formate and ammonium nitrate. The present invention also relates to an aqueous reaction liquid composition comprising a Deep Eutectic Solvent (DES) comprising urea in combination with an anti-deforming agent as disclosed above. In another aspect the invention relates to an ink set comprising such aqueous reaction liquid composition and an ink composition, preferably a pigmented ink composition. In another aspect the present invention relates to a printing method including application of an aqueous reaction liquid composition according to the present invention and application of an ink composition.

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