A printer is caused to perform duplex printing by an information processing device in which an OS standard printing program is installed. When causing a printer connected to a PC to execute duplex printing based on a print instruction output from an editing application installed in the PC, an auxiliary program that supports the printer executes rotation processing of rotating an image of a page, which is required to be rotated, by 180 for intermediate data received from a general-purpose print program, executes rearrangement processing of rearranging a processing order from a page order to a print order for print data received from the general-purpose print program, according to a sheet conveying aspect of the printer, and transmits the print data after the rotation processing and the rearrangement processing from the PC to the printer.

An apparatus, system, method, and a control program stored in a non-transitory recording medium, each of which: receives a plurality of input images corresponding to respective viewpoints; generates, based on the plurality of input images, a first output image and a second output image that are to be printed by duplex printing on at least one transmissive transfer medium having image layers on both sides thereof, so as to reproduce at least part of one of the input images corresponding to each of the viewpoints on the transmissive transfer medium; and instructs a printer to print the first output image and the second output image by duplex printing.

A duplex printing method includes, determining an amount of shrinkage of a media sheet onto which a front side image has been printed; scaling an image to be printed on a back side of the sheet with a scaling function that depends upon the determined shrinkage; and printing the scaled image on the back side of the sheet. The step of determining includes predicting a shrinkage of a media sheet on the basis of process parameters, and on the basis of a model that is defined by a set of model parameters and that describes a dependence of the shrinkage on the process parameters, the process parameters including at least an amount of marking material to be applied to the front side of the sheet; measuring an actual shrinkage of the sheet; and adjusting the model parameters based on a comparison between the predicted shrinkage and the measured shrinkage to improve a prediction of a shrinkage for a subsequent sheet.

An apparatus includes a specifying unit that specifies a color; an input unit that inputs an image; a converting unit that converts a color in the image, which has a hue within a predetermined range with respect to the specified color, into a color of a predetermined hue and converts a color in the image, which has a hue outside the predetermined range with respect to the color, into black; a printing unit that prints the image subjected to the converted color; and a counting unit that separately counts a number of sheets when the printed image includes the color of the predetermined hue and a number of sheets when the printed image does not include the color of the predetermined hue.

According to an embodiment, an image forming apparatus, comprises a document feeder to feed a document page by page, a scanner to scan the document fed by the document feeder and generate image data of the document, a printing apparatus to print images on recording media. An interface is configured to receive print settings and a test printing command. A controller is configured to control the document feeder to feed pages of the document according to the print settings when the test printing command is received, acquire image data of the pages of the document fed by the document feeder, and control the printing apparatus to print images in a test printing. The images in the test printing comprising image data of the pages of the document fed by the document feeder.

A server includes memory storing management information including: first correspondence information representing correspondence between an output format for printing process and price for the printing process based on the output format; and second correspondence information representing correspondence between an account information of a user and balance spendable by the user and a controller configured to perform: receiving a printing request using an account information item; determining whether an object price is equal to or less than an object balance; if the object price is more than the object balance, extracting candidate output format that is different from the object output format and usable to perform a printing process based on the printing request within the object balance, with reference to the first correspondence information; and transmitting information representing the extracted candidate output format to an external device.

A printing system includes: a first printing unit that performs printing on a medium on the basis of first printing data; a first inventing unit that is located downstream from the first printing unit in a transportation direction specific to the medium and performs an inverting operation that is an operation of inverting front and back sides of the medium; a second printing unit that is located downstream from the first inverting unit in the transportation direction and performs printing on the medium on the basis of second printing data; and a control unit that determines whether the first inverting unit needs to perform the inverting operation, on the basis of whether the second printing data indicates a printing page for the front or back side of the medium.

An image forming apparatus includes an image forming section, a receiving section, and a controller. The image forming section forms a plurality of images on a plurality of sheets. The receiving section receives a print job including a layout format indicating a layout of the images on the sheets. The controller controls the image forming section based on the print job. Each of the images indicates an image expressed by image data of a single page. The print job includes an instruction to form the images on the sheets according to a plurality of mutually different layout formats.

The present disclosure pertains to an image forming apparatus that may include a hardware processor that may: receive a print job; acquire position information of a user; determine an output mode of a printed matter on the basis of the acquired position information; and execute the print job and output the printed matter in the determined output mode.

According to an embodiment, an image forming apparatus, comprises a document feeder to feed a document page by page, a scanner to scan the document fed by the document feeder and generate image data of the document, a printing apparatus to print images on recording media. An interface is configured to receive print settings and a test printing command. A controller is configured to control the document feeder to feed pages of the document according to the print settings when the test printing command is received, acquire image data of the pages of the document fed by the document feeder, and control the printing apparatus to print images in a test printing. The images in the test printing comprising image data of the pages of the document fed by the document feeder.