A method for reducing image burn-in artifacts in an electrophotographic printing system, includes receiving a print job including image data for a set of pages to be printed. The pages are analyzed to determine that the image data for a sequence of pages in the print job are similar. The similar pages are printed using a pattern of page orientations including a first page orientation and a second page orientation, wherein the image data for the second page orientation is rotated 180 degrees relative to the image data for the first page orientation.

An image forming apparatus combines a plurality of sub-movies representing operation procedures to be performed to perform maintenance on the image forming apparatus and plays the combined sub-movies sequentially as one movie. In response to stopping the movie being played, the image forming apparatus displays a replay mark for use to issue a command to replay the movie from the beginning of a sub-movie corresponding to a position where the movie is stopped.

An inspection device includes an image reader that generates a scan image, an inspector that inspects an inspection target image formed on a storage medium, by comparing a scan image with a reference image, a storage that stores the reference image, and a hardware processor that stores into the storage the reference image generated as the scan image by reading with the image reader an image formed on a recording medium by the image former on a basis of a second print job for generating the reference image, determines whether the reference image stored in the storage satisfies a predetermined condition when a data amount of the reference image stored in the storage becomes equal to or larger than a predetermined amount, and deletes the reference image determined to satisfy the predetermined condition from the storage.

A position of a first registration mark printed on a substrate during an earlier printing operation is detected. A second registration mark is printed on the substrate during a current printing operation at a position on the substrate relative to the first registration mark based on the detected position of the first registration mark and a correction factor. An alignment difference between the position of the first registration mark and the position of the second registration mark is measured. A new correction factor for a subsequent printing operation is calculated by weighting the measured alignment difference according to a difference between the measured alignment difference and a previous measured alignment difference.

An image processing apparatus includes a printer that prints an image on a sheet, a scanner that reads an image on a sheet, and one or more controllers configured to cause the scanner to read an image on a sheet, to cause a display to display the image, to receive an instruction for adopting an image serving as a candidate for a correct image from the displayed image, to generate the correct image based on the image serving as the candidate, to register the correct image, and to cause the scanner to read an image printed on a sheet and to verify the printed image based on the read image and the registered correct image. When a defective image is in the read image, the display displays the defective image in which a defective area is emphasized and the defective image in which the defective area is not emphasized.

Provided are a non-transitory computer-readable storage medium storing a control program for creating a database for use in color calibration and that storing a control program for a judgement based on the database. The control programs cause a computing device to perform the following operations. The database-creating operations include calculating a white-ground color difference using a print medium, and repeating a feedback adjustment of a color correction LUT, to obtain a resulting color accuracy. The operations further include obtaining white-ground color differences and resulting color accuracies for plural paper products of a certain print medium type, to obtain a mathematical relation and create a database. The judgement operations include using the database to calculate an estimated resulting color accuracy from a white-ground color difference calculated using a print medium, and judging whether to perform a feedback adjustment of a color correction LUT based on the estimated resulting color accuracy.

An image capturing system includes an imager, a detector, and a controller. The imager is configured to move relative to an object to be imaged and capture an image of the object. The detector is configured to detect a predetermined relative position of the object with respect to the imager. The controller is configured to switch from stop supplying a system clock to supplying the system clock based on the detected predetermined relative position. The system clock is used to control a timing to start capturing an image by the imager. After stops supplying the system clock, the controller resumes supplying the system clock to the imager according to a relative movement of the object, based on the detected predetermined relative position.

An image inspection apparatus for checking an image printed on a recording medium includes: a reference pixel obtaining unit configured to generate a reference image and obtain a first pixel value from the reference image; a print pixel obtaining unit configured to extract an image printed area and obtain a second pixel value from the image; an offset processing unit configured to add a non-image-printed area; and an image checking unit configured to compute a difference between the first image pixel value and the second image pixel value and detect an error when the difference is higher than a predetermined threshold value, wherein the non-image-printed area contains a third pixel value that is different from the first pixel value or the second pixel value, and the image checking unit suspends a determination whether or not there is an error in the image printed area associated with the non-image-printed area.

An image forming apparatus includes a forming unit configured to form a set of reference patches corresponding to different density regions through an image forming unit while making the reference patches correspond to screen types, an input unit configured to input a comparison result between each of the reference patches and criterial patches having densities as criteria at each of the screen types, and a generation unit configured to generate information for correcting a density of an image formed by the image forming unit at each of the screen types by using the comparison result input by the input unit, wherein the information generated by the generation unit for correcting an image in a highest density region from among the density regions is commonly generated according to the comparison result input with respect to each of the reference patches formed at each of the screen types.

An inspection apparatus that inspects the quality of a printed product printed by a print apparatus receives information indicating a reference image, from an information processing apparatus that transmits a print job to the print apparatus. The inspection apparatus acquires the reference image based on the information indicating the reference image. The inspection apparatus receives from the print apparatus a scanned image of the printed product printed based on the print job received from the information processing apparatus, and inspects the quality of the printed product based on a comparison between the received scanned image and the acquired reference image.