A sheet printer includes a sheet conveyor assembly including a first conveyor with a first holding device configured for exerting a holding force on a sheet proportional to a coverage of the sheet on the first conveyor and a second conveyor upstream of the first conveyor including a second holding device configured for holding and releasing the sheet, a print head assembly positioned over the first conveyor, a detector assembly for sensing the transport of the first conveyor, a controller storing on its memory a sheet media catalogue and configured to control a release timing of the second holding device for releasing the sheet partially engaged by the first conveyor based on a media type parameter selected from the media catalogue and to control the print head assembly to commence printing the sheet based on transport information from the detector assembly.

A deflecting device for deflecting a conveyed sheet includes a guiding assembly having an inlet for receiving a conveyed sheet front an upstream section of a main conveying path, a primary outlet for discharging a conveyed sheet onto a downstream section of a main conveying path, a secondary outlet for discharging a conveyed sheet onto an initial section of a side conveying path, and a passing area for passing a conveyed sheet from the inlet towards the primary outlet; and a deflector for deflecting a conveyed sheet towards the secondary outlet, movable into a receiving position for receiving a leading edge of a conveyed sheet inside the passing area and movable into a discharge position for discharging a leading edge of a conveyed sheet towards the secondary outlet, wherein the deflector defines a curved trajectory for a conveyed sheet deflected towards the secondary outlet in the discharge position, wherein one side of the curved trajectory faces the primary outlet. A functional portion of the deflector is configured to be inserted into the passing area on the one side of the curved trajectory when the deflector moves into the receiving position, and to be retracted from the passing area on the one side of the curved trajectory when the deflector moves out of the discharge position.

A deflecting device for deflecting a conveyed sheet includes a guiding assembly having an inlet for receiving a conveyed sheet front an upstream section of a main conveying path, a primary outlet for discharging a conveyed sheet onto a downstream section of a main conveying path, a secondary outlet for discharging a conveyed sheet onto an initial section of a side conveying path, and a passing area for passing a conveyed sheet from the inlet towards the primary outlet; and a deflector for deflecting a conveyed sheet towards the secondary outlet, movable into a receiving position for receiving a leading edge of a conveyed sheet inside the passing area and movable into a discharge position for discharging a leading edge of a conveyed sheet towards the secondary outlet, wherein the deflector defines a curved trajectory for a conveyed sheet deflected towards the secondary outlet in the discharge position, wherein one side of the curved trajectory faces the primary outlet. A functional portion of the deflector is configured to be inserted into the passing area on the one side of the curved trajectory when the deflector moves into the receiving position, and to be retracted from the passing area on the one side of the curved trajectory when the deflector moves out of the discharge position.

In one example in accordance with the present disclosure, a printing device is described. The printing device includes a single thermal printhead that includes an array of heating elements. The array of heating elements are selectively powered to form content on both sides of thermal media passing thereby. Different sides of the thermal media have thermal dye layers with different activation sensitivities. The printing device also includes a media transport system to move the thermal media by the single thermal printhead. A controller of the printing device generates printed content on both sides of the thermal media in a single pass by powering the single thermal printhead based on both content to be formed on a first side and content to be formed on a second side.

In one example in accordance with the present disclosure, a printing device is described. The printing device includes a single thermal printhead that includes an array of heating elements. The array of heating elements are selectively powered to form content on both sides of thermal media passing thereby. Different sides of the thermal media have thermal dye layers with different activation sensitivities. The printing device also includes a media transport system to move the thermal media by the single thermal printhead. A controller of the printing device generates printed content on both sides of the thermal media in a single pass by powering the single thermal printhead based on both content to be formed on a first side and content to be formed on a second side.

Embodiments described herein relate to an inkjet printing platform. The inkjet printing platform is utilized for fabrication of optical films and optical device structures. The inkjet printing platform includes a transfer chamber, one or more inkjet chambers, a plurality of auxiliary modules, a substrate flipper, and load ports. The inkjet printing platform is operable to perform an inkjet printing process on a substrate to form an optical film and/or an optical device.

In example implementations, a printing device is provided. The printing device includes a printer module, a first driver roller, and a second drive roller. The printer module includes a single set of print bars. A first side of the single set of print bars is to print on a first side of a continuous web of print media and a second side of the single set of print bars is to print on a second side of the continuous web of print media. The continuous web of print media travels over a common set of idler rollers. The first driver roller is to control an amount of tension of the continuous web of print media on a first side. The second drive roller is to control an amount of tension of the continuous web of print media on a second side. The amount of tension of the continuous web of print media on the second side is greater than the amount of tension of the continuous web of print media on the first side.

An inkjet recording apparatus includes memory, a processor, an image forming section, and a bending mechanism. The memory stores therein bending information in which a plurality of bending amounts corresponding to respective ejection amounts of an ink ejected from the image forming section are defined. The processor sets a bending amount of a sheet to be conveyed. The bending mechanism includes a roller and a belt that hold the sheet therebetween, and bends the sheet by moving a position of a center of the roller toward the belt based on the set bending amount. The processor calculates for each of areas of the sheet an amount of the ink ejected to the area, and sets the bending amount of the sheet based on the bending amounts corresponding to the calculated amounts of the ink ejected to the respective areas in the bending information.

An inkjet recording apparatus includes memory, a processor, an image forming section, and a bending mechanism. The memory stores therein bending information in which a plurality of bending amounts corresponding to respective ejection amounts of an ink ejected from the image forming section are defined. The processor sets a bending amount of a sheet to be conveyed. The bending mechanism includes a roller and a belt that hold the sheet therebetween, and bends the sheet by moving a position of a center of the roller toward the belt based on the set bending amount. The processor calculates for each of areas of the sheet an amount of the ink ejected to the area, and sets the bending amount of the sheet based on the bending amounts corresponding to the calculated amounts of the ink ejected to the respective areas in the bending information.

A printing apparatus, having a conveyer, a first conveyer path, a printer, a cutter assembly, and a controller, is provided. The cutter assembly cuts the printing medium into a first part located frontward and a second part located rearward in a first conveying direction. The controller controls the printer to print an image in the second part on one side of the printing medium, controls the conveyer to move the printing medium from the first conveyer path to a second conveyer path through a first switchback action and inverts the printing medium by conveying in a second conveying direction, controls the printer to print an image in the second part on the other side of the printing medium, and controls the cutter assembly to cut the printing medium into a first printing medium having the first part and a second printing medium having the second part.