An image reading device includes: a scanner configured to read an image formed on a sheet of paper; a first background member configured to reflect light emitted from the scanner; a colorimeter configured to take a color measurement of the image; a second background member configured to reflect light emitted from the colorimeter; a guide member configured to guide the sheet of paper passing between the colorimeter and the second background member; and a regulating member configured to regulate movement of the sheet of paper, wherein the regulating member includes: a first member including a rolling member; a second member including a rolling member; and a pressing member configured to press the first member and the second member against the guide member, and the pressing member is disposed in a position offset from axes of the first member and the second member.

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 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 apparatus includes a volatile first storage and a nonvolatile second storage with a limited number of writes, and the apparatus includes a printer configured to execute printing based on image data, and a controller having one or more processors which execute instructions stored in one or more memories, the controller being configured to acquire information about a number of writes of the second storage, and switch between a first operating mode of storing the image data in the second storage and a second operating mode of storing the image data in the first storage and not storing the image data in the second storage based on the information about the number of writes.

An image processing apparatus controls an operation of a printer apparatus that prints an image on a sheet being attachable to skin. The image processing apparatus includes: an image acquirer that acquires a skin image; an image analyzer that extracts, from the skin image, a discolored region differing in color from surrounding skin by at least a predetermined level, and color of the surrounding skin; a print type determiner that determines, based on at least one of color and size of the discolored region, a print type that includes at least one of use/nonuse of a base material containing a white pigment, a particle shape of a print material used in the printing, a scheme of the printing, and use/nonuse of lamé powder; and a printing controller that outputs, to the printer apparatus, image data having a content of printing a print material in the surrounding color, on a region corresponding to the discolored region in the sheet, and controls an operation of the printer apparatus according to the determined print type.

An image processing apparatus includes a reading device and at least one processor. The reading device reads a document into image data of a document image with a first resolution and a second resolution that are different from each other. The first resolution is used for reading the document in a main scanning direction. The second resolution is used for reading the document in a sub-scanning direction perpendicular to the main scanning direction. One or more processors detect an inclination angle of the document image corresponding to inclination of the document, obtain a distortion angle of the document image based on the inclination angle and a ratio between the first resolution and the second resolution, and correct distortion of the document image using the distortion angle.

A printing system is disclosed. The printing system includes a printer to print image data to a medium and a print controller including a halftone calibration module to dynamically generate calibrated halftones to compensate for optical density changes that occur at the printer.

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 image forming apparatus includes: a tray on which at least one sheet is loaded; a sensor and a controller. The sensor measures overall weight of the sheet loaded on the tray. The controller calculates decrement from the overall weight measured by the sensor upon completion of a job. The controller calculates total weight of the sheet loaded on the tray through execution of the job. The controller executes a logout process based on the decrement and the total weight.

In an inspection system including a printing apparatus, an inspection apparatus configured to inspect quality of a printed product printed by the printing apparatus, and an information processing apparatus configured to transmit a print job to the printing apparatus, the information processing apparatus transmits a print job to the printing apparatus in a case where a reference image to be used for inspecting the quality of the printed product corresponding to the print job is registered, and does not transmit the print job in a case where the reference image corresponding to the print job is not registered.