An image forming apparatus includes an image forming unit, an intermediate transfer member, a transfer member, a power source, a fixing unit, a photo sensor photosensor, and a control unit configured to perform a mode to output a test chart which is formed by transferring a plurality of test toner images from the intermediate transfer member onto a plurality of sheets of the recording material, the test chart being used to adjust the transfer voltage applied to the transfer member. The control unit is configured to adjust the transfer voltage based on a detection result of the photo sensor photosensor detecting the plurality of test toner images recovered fixed on the recording material. In a case where a jam occurred during execution of the mode, the control unit is configured to resume the mode after the jam has been recovered.

A printed-matter inspection system includes a processor for evaluating quality of printed matter, and a display apparatus. The processor is configured, by reading a program for execution, to: for each of multiple pages in a job, if the page is an inspection target, compare, for inspection, a scanned image with a reference image, the scanned image being obtained through scanning of printed matter in the page, the reference image being generated by using rasterized data for the page; and, in display of the result of the inspection on the display apparatus, display the scanned image for the page that is an inspection target, and display, for a page that is not an inspection target, a dummy page and information indicating that the page is not an inspection target, the dummy page being a substitute of the scanned image.

An image processing apparatus includes a scanner configured to read an image formed on a sheet along a reading direction and generate image data thereof, and a processor. The processor is configured to select a first region of the generated image data into which a first image indicating the reading direction is to be combined, set a pixel value of the first image in accordance with a pixel value of a pixel around the first region, and combine the first image having the determined pixel value into the first region of the image data and output the combined image data.

Provided is a print data correction method that is executed by a printing device. The print data correction method includes: printing a first correction chart with a printer that performs printing; obtaining a first correction value based on the printed first correction chart; printing a second correction chart based on the first correction value with the printer; obtaining a second correction value based on the printed second correction chart; and correcting, based on the second correction value, print data to be printed by the printer.

An image forming apparatus includes an image forming unit configured to convey a recording medium and form an image on the recording medium based on an image forming condition; and a controller configured to control the image forming unit to form a test image and a scale image extending in a conveyance direction in which the recording medium is conveyed, obtain user instruction information related to a density fluctuation of the test image in the conveyance direction, and generate the image forming condition to suppress image density unevenness in the conveyance direction in an image to be formed by the image forming unit based on the user instruction information.

An image forming apparatus that forms an image on a recording medium includes: an image forming unit that forms an image on a recording medium and is capable of forming an image for diagnosis, which is an image used for diagnosis of the image forming apparatus; and an adding unit that adds, to a recording medium on which the image for diagnosis has been formed by the image forming unit, information for control used to control output of a reading result from an apparatus used to read the recording medium, the reading result being obtained by reading the recording medium by the apparatus.

An inspection system includes: an inspection part that compares a scanned image obtained by scanning a sheet on which an image is formed on the basis of a job with a reference image prepared in advance and thereby performs inspection of the scanned image; and a hardware processor that sets an inspection target page to be a target of inspection and a non-inspection target page to be excluded from inspection, for the job, wherein the hardware processor causes the inspection part to perform inspection for the inspection target page and not to perform inspection for the non-inspection target page on the basis of the setting of the hardware processor, and the hardware processor creates an inspection report including scanned images of all pages of the job including the non-inspection target page.

A first separation distance is determined between a first pair of defects in a scanned image of a first printed sheet, and a second separation distance is determined between a second pair of defects in a scanned image of a second printed sheet. The defects are determined as having a separation distance in that the first and second separation distances are each within a first threshold of a specified separation distance and/or a difference between the first and second separation distances is below a second threshold. A source of the defects can be determined based on the characteristic separation distance.

According to one embodiment, an image reading device includes an image reading unit, a control unit, and an output unit. The image reading unit reads an image formed on a document to generate read image data. The control unit extracts at least one predetermined area from the read image data to generate extracted image data, compares the extracted image data and reference image data determined for each of the predetermined area, for each of the predetermined area, and generates an aggregated image obtained by aggregating the extracted image data and information indicating a result of the comparison. The output unit outputs the aggregated image.

A color chart is for evaluating printing quality of an image forming apparatus. The color chart includes identification information and a color evaluation patch. The identification information is on an image forming apparatus on which evaluation of printing quality is to be performed. The color evaluation patch includes a plurality of color patches for performing evaluation of printing quality on the image forming apparatus indicated by the identification information.