A method for reducing artifacts in an electrophotographic printing system includes receiving a print job including image data for a set of pages. The electrophotographic printing system is used to print a block of pages from the print job to provide corresponding printed pages. The image data for the block of pages is analyzed to determine an average toner usage rate. If the determined average toner usage rate for the block of pages falls outside an acceptable toner usage rate range, image data for a compensation image and a number of compensation images are determined such that the average toner usage rate will be brought back into the acceptable toner usage rate range.

A printing apparatus that performs printing on a medium while being manually moved relative to the medium, the printing apparatus including a first discharger including a first nozzle row that discharges a first liquid, a second discharger including a second nozzle row that discharges a second liquid and is so provided as to be separate from the first nozzle row in a first direction perpendicular to the first nozzle row, a movement detection section that detects the moving direction of the printing apparatus viewed from the side facing the printing apparatus while the printing apparatus is moved, and an error process section that carries out an error process when printing using both the first and second dischargers is performed and the moving direction detected by the movement detection section deviates from the first direction.

An image forming apparatus includes an image forming device and circuitry. The image forming device forms an image. The circuitry corrects an amount of deviation based on a pattern formed by the image forming device, changes a magnification of the pattern, and calculates the amount of deviation based on the magnification.

An image forming apparatus includes an image forming unit configured to form an image on an image bearing member based on an image forming condition; a transfer unit configured to transfer the image formed on the image bearing member onto a sheet; a first reading sensor configured to read a first image for adjustment which has been formed on the sheet; a second reading sensor configured to read a second image for adjustment which has been formed on the image bearing member; and a controller configured to: generate the image forming condition based on reading results of the first image for adjustment on a plurality of sheets, which are obtained by the first reading sensor; and generate the image forming condition based on a reading result of the second image for adjustment, which is obtained by the second reading sensor.

There is provided an image forming system that includes an image forming apparatus including, a first variable mechanism that varies from a first state to a second state or from the second state to the first state when physically operated by a user, a first detection unit configured to detect the variation of a state of the first variable mechanism, and a sound collection unit. The image forming system further includes a generation unit configured to generate, when the variation is detected by the first detection unit, first statistical information regarding at least one sound wave obtained by the sound collection unit in a period based on a timing when the variation is detected.

An information processing apparatus includes at least one processor configured to: acquire physical-property-value information of a recording medium; using information regarding a printing machine, perform an evaluation as to whether there is a possibility that the recording medium causes trouble for printing by the printing machine, the evaluation being performed with respect to at least one printing performance indicator based on the physical-property-value information; and output a result of the evaluation to a display device.

Embodiments of the disclosure provide for improved print position compensation, for example to improve accuracy of print job(s) performed by a printer. The print position compensation enables an offset of the time until printing occurs on a print media to account for changes and/or erroneous movement in a print media, such as due to slippage and/or other results of a force applied to the print media. Particular embodiments determine data values derived both for an output phase and a retraction phase of the printer's operation. Various embodiments generate a print position compensation based on sensor-based edge position distances determined during each of a media output phase and a media retraction phase. Alternatively or additionally various embodiments generate a print position compensation based on sensor-based media movement phase timestamp differentials determined during each of a media output phase and a media retraction phase.

There is provided with an image processing apparatus. An obtaining unit obtains a first image serving as a read image of an inspection target medium having undergone printing, and a second image serving as a read image of a reference medium representing a target print result. An inspection unit inspects a defect on the inspection target medium based on the first image and the second image by performing inspection at inspection settings different between a print region and a peripheral region of the inspection target medium.

An apparatus outputs a first number of printed materials, reads the first number of printed materials output to acquire the first number of pieces of scanned image data, the first number being two or more, and controls a density of output printed materials by calculating variations in lightness values in the respective pieces of scanned image data included in scanned image data groups for each scanned image data group having as a unit a second number of pieces of scanned image data consecutive in order of being read among the first number of pieces of scanned image data, the second number being two or more, so that the printed materials are further output until all the variations in the lightness values are less than a first threshold value.

A printing apparatus includes: a conveying roller which conveys a print medium in a conveying direction; a line head having first and second nozzle rows arranged in the conveying direction; and a controller. Each of the first and second nozzle rows includes nozzles aligned along a width direction orthogonal to the conveying direction. The nozzles are configured to discharge liquid, and the nozzles in the first nozzle row and the nozzles in the second nozzle row are shifted in the width direction. The first nozzle row has: first nozzles forming a group; and second nozzles forming a group adjacently in the width direction to the group of first nozzles in the first nozzle row. The second nozzle row has: first nozzles forming a group; and second nozzles forming a group adjacently in the width direction to the group of first nozzles in the second nozzle row.