An image forming apparatus includes a forming unit, a generation unit, a storage unit, a correction unit, and a changing unit. The forming unit forms an image. The generation unit generates correction data for correcting density unevenness for each of a plurality of regions divided in a main scanning direction of an image formed by the forming unit. The storage unit stores the correction data generated by the generation unit. The correction unit corrects a density of an image to be formed by the forming unit for each of the plurality of regions based on the correction data stored by the storage unit. The changing unit changes an image formation density by the forming unit with a uniform amount of change for the plurality of regions after the correction data is generated by the generation unit.

An image forming apparatus includes a light scanning device, a developing portion, a control portion and a storage portion. An evaluation chart includes a first evaluation pattern and a second evaluation pattern. The first evaluation pattern includes a first patch row. The first patch row is formed by arranging a plurality of first evaluation patches. The first evaluation patch includes a first dot row and a second dot row. The second evaluation pattern includes a second patch row. The second patch row is formed by arranging a plurality of second evaluation patches.

Disclosed here is a system enabling users/customers to receive an objective assessment of the performance of a printer. This is accomplished by comparing a quality score of an earlier-in-time image with a quality score of a later-in-time image. A processor analyzes each image based on several criteria and uses various image-analysis methods, to flag errors within an image. A numeric quality score, based on the number of errors, is provided to the user to objectively evaluate whether the printer has degraded or not. Thus, the user can objectively present an argument to a salesperson or manufacturer that the user is due a remedy.

The image processing apparatus extracts an image area corresponding to a margin area of a chart for evaluation from a scanned image obtained by scanning a printed material on which the chart is printed. The image processing apparatus evaluates the printed material based on, in a case where a printing medium used for the printing is determined to be a printing medium having a specific characteristic based on the image area corresponding to the margin area, the scanned image from which influence based on the specific characteristic is decreased.

A multifunction peripheral includes a conveyance roller, a print engine, a scanner, and a controller. The controller is configured to perform: driving the conveyance roller to convey a recording medium and controlling the print engine to record, on the recording medium, a test image based on test image data with recording agent; after recording the test image, controlling the scanner to generate scan data of the test image recorded on the recording medium; after generating the scan data, extracting, based on the scan data and the test image data, stain data indicative of a stain caused by transfer of the recording agent from the conveyance roller to the recording medium; after extracting the stain data, generating correction data by removing the stain data from the scan data; and executing particular processing by using the correction data.

An apparatus includes an output unit configured to output a printed material of a verification image in a case where a condition is satisfied, an obtainment unit configured to obtain a verification result based on a comparison between a read image of the printed material of the verification image and a correct answer image, and a control unit configured to control printing based on the verification result.

An image forming apparatus includes a sheet feeding portion, a detecting portion, and a controller. The controller sets a state of the detecting portion at a first monitoring state in which a detection result of the detecting portion is acquired to detect presence or absence of the recording material by supplying the electric power to the detecting portion in a first cyclic period. In case that the detection result of the detecting portion changes in the first monitoring state, the controller switches the state of the detecting portion to a second monitoring state in which a detection result of the detecting portion is acquired by supplying the electric power to the detecting portion in a second cyclic period shorter than the first cyclic period.

An image forming apparatus comprises an image forming unit; a sensor that measures a measurement image; and a controller. The controller controls the image forming condition based on a measurement result of measuring a first measurement image; acquires information having a correlation to density variation of images to be formed by the image forming unit; controls the image forming condition based on the information; determines a first value regarding a density of an image to be formed, based on a measurement result of measuring a second measurement image; determines a second value regarding a density of the image to be formed by the image forming unit, based on the information; and controls a timing at which the image forming unit next forms the first measurement image, based on the first value and the second value.

A printing apparatus connectable to an inspection apparatus in a communicable manner according to the present invention includes a reception unit configured to receive an inspection job including at least information indicating whether a correct answer image is to be registered, an analysis unit configured to analyze the received inspection job, and, a control unit configured to perform control so that the correct answer image is transmitted to the inspection apparatus in a case where the correct answer image is to be registered, and to perform control so that an instruction to select the correct answer image is transmitted to the inspection apparatus in a case where the correct answer image is not to be registered, as a result of the analysis.

An image forming apparatus includes a processor configured to: receive paper information on a type of paper on which an image is formed; acquire assist information about assistance to supply the paper by supplying gas to the paper and adjustment information about positioning of the paper after assistance to supply the paper is performed, the assist information and the adjustment information corresponding to the received paper information and relating to transport of the paper; and perform control for storing the paper information, the assist information, and the adjustment information in association with one another into a memory.