An image forming apparatus includes an image forming device and a control device. The image forming device forms an image on a recording medium. The control device controls an image forming process. The control device includes circuitry. The circuitry changes a plurality of partial images in a target image into a certain state. The target image is to be formed on the recording medium. The plurality of partial images are to be formed peripheral to a plurality of pattern images. Each of the plurality of pattern images is to be formed at a certain position on the recording medium. The circuitry further controls the image forming device to form the target image including the changed plurality of partial images and the plurality of pattern images on the recording medium, and corrects a position of the target image based on a detection result of the formed plurality of pattern images.

An image forming apparatus includes an image forming device, a heater, and a control circuit. The control circuit is configured to generate first energization data based on at least part of first raster image data representing a first image to be formed on a first page, and then compress the first raster image data into first compressed image data. The control circuit is also configured to generate second energization data based on at least part of second raster image data representing a second image to be formed on a second page, and then compress the second raster image data into second compressed image data. The control circuit is configured to further determine whether rotation of the second image by a predetermined degree will lower power consumption based on a comparison of the first energization data to the second energization data.

An image forming apparatus includes an image forming device, a heater, and a control circuit. The control circuit is configured to generate first energization data based on at least part of first raster image data representing a first image to be formed on a first page, and then compress the first raster image data into first compressed image data. The control circuit is also configured to generate second energization data based on at least part of second raster image data representing a second image to be formed on a second page, and then compress the second raster image data into second compressed image data. The control circuit is configured to further determine whether rotation of the second image by a predetermined degree will lower power consumption based on a comparison of the first energization data to the second energization data.

There is provided an image forming system including at least a first image forming apparatus that includes a first image forming unit and an obtaining unit configured to obtain operation-related information related to an operation of the first image forming unit. The image forming system further includes a carryover unit configured to carry over, to a second image forming apparatus, information related to an operation of a second image forming unit of the second image forming apparatus among the operation-related information obtained by the first image forming apparatus when the second image forming apparatus is newly used in the image forming system. The operation-related information includes operation history information of the first image forming unit.

There is provided an image forming system including at least a first image forming apparatus that includes a first image forming unit and an obtaining unit configured to obtain operation-related information related to an operation of the first image forming unit. The image forming system further includes a carryover unit configured to carry over, to a second image forming apparatus, information related to an operation of a second image forming unit of the second image forming apparatus among the operation-related information obtained by the first image forming apparatus when the second image forming apparatus is newly used in the image forming system. The operation-related information includes operation history information of the first image forming unit.

According to one embodiment, there is provided an image forming device, the image forming device applying information differently for each copy to a sheet on which an image is to be formed. The image forming device includes a controller, an image forming processor, and an authenticator. The controller is configured to acquire image information, the image information including an input image to be formed on a sheet and applying information associated with each copy, in response to the input image being formed. The controller is configured to generate a composite image obtained by applying an applying image based on the applying information for each copy to the input image. The image forming processor is configured to form the composite image generated for each copy on the sheet of each copy. The authenticator is configured to authenticate a user based on a user identity.

In an image forming apparatus, a print data acquiring unit acquires variable-data-printing print data that includes common document data and insert data. The common document data includes a common part common to plural printed matters. The insert data is for a variable part individually set for each of the plural printed matters. The common document data includes one or plural identifiers; the identifier indicates the variable part, and the insert data includes one or plural values corresponding to the identifier. The variable-data-printing processing unit causes a printing device to perform variable data printing on the basis of print data obtained by replacing the identifier in the common document data with the value. In addition, the variable-data-printing processing unit determines a print sheet corresponding to the value used in the replacement, and causes the printing device to perform the variable data printing using the determined print sheet.

An image forming includes a dither processing unit that applies a dither matrix to an image; an exposure unit that exposes a photosensitive drum to form an electrostatic latent image based on the image to which the dither matrix has been applied; a development unit that develops, using a developing material on a developing roller, the formed electrostatic latent image; and a control unit that, based on a print setting change instruction by a user, increases a circumferential speed of the developing roller relative to the circumferential speed of the photosensitive drum and decreases a screen ruling of the dither matrix to be applied by the dither processing unit.

An image forming apparatus includes an image forming device and a control device. The image forming device forms an image on a recording medium. The control device controls an image forming process. The control device includes circuitry. The circuitry changes a plurality of partial images in a target image into a certain state. The target image is to be formed on the recording medium. The plurality of partial images are to be formed peripheral to a plurality of pattern images. Each of the plurality of pattern images is to be formed at a certain position on the recording medium. The circuitry further controls the image forming device to form the target image including the changed plurality of partial images and the plurality of pattern images on the recording medium, and corrects a position of the target image based on a detection result of the formed plurality of pattern images.

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.