A printing system includes processing circuitry. The processing circuitry acquires print data of a plurality of pages and extracts comparison data from the print data for each page. The processing circuitry, from first image data read from a printed material on which the print data is printed, acquires second image data at a position corresponding to the comparison data, for each page of the printed material. The processing circuitry outputs a comparison result of the comparison data and the read image data for each page.

A controller of an image reading device performs search for an edge candidate position inward from an edge portion in a main scanning direction of analysis image data in an extraction process of extracting a document region from read image data. When the retrieved edge candidate position corresponds to a dirt position, the search is continued whereas when the retrieved edge candidate position does not correspond to the dirt position, the document region is extracted from the read image data at the retrieved edge candidate position.

The recording device includes an upstream transport roller pair capable of transporting a medium, a recording head configured to record an image by discharging ink at a predetermined timing on the medium transported downstream in a Dl direction by a predetermined transport amount by the upstream transport roller pair while moving in a Y-axis direction intersecting the D1 direction, an image capturing unit configured to read the image recorded on the medium by the recording head, and a control unit, wherein the control unit has a function of performing maintenance for a discharge failure of the ink, a correction of the transport amount, and a correction of the discharge timing of the ink based on the reading result of the image read by the image capturing unit.

An image forming apparatus includes a recording medium accommodation portion that accommodates a recording medium, a storage portion that stores information about the recording medium that is accommodated in the recording medium accommodation portion and previously printed, a sensing portion that senses opening and closing of the recording medium accommodation portion, a comparison portion that compares currently set setting information about the recording medium with the information about the recording medium stored in the storage portion on a condition that the sensing portion senses that the recording medium accommodation portion is not open between previous printing and current printing, and an output portion that outputs a comparison result of the comparison portion.

An information processing apparatus includes a processor configured to: obtain characteristic values including smoothness and basis weight of a recording medium; and identify the type of the recording medium on the basis of the smoothness and the basis weight.

An image reading apparatus connectable to a post-processing apparatus includes an image reading unit for transmitting image data to an inspection processing unit, and a communication unit for outputting a sheet discharge timing signal to the post-processing apparatus through a signal line. The communication unit outputs the sheet discharge timing signal having different waveforms to the post-processing apparatus on the basis of an inspection result of a sheet obtained from the inspection processing unit such that the sheet discharge timing signal includes a first waveform when the sheet determined by the inspection processing unit as that there is no image abnormality is discharged and such that the sheet discharge timing signal includes a second waveform different from the first waveform when the sheet determined by the inspection processing unit as that the image abnormality occurs is discharged.

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 information processing device includes a processor configured to acquire a first characteristic value indicating a shape characteristic of a surface of a medium, and calculate, based on the first characteristic value, a contact angle of a droplet with respect to the medium.

An image reading apparatus includes a transparent member, a conveyance unit, a reading unit reading an image information through the transparent member from the sheet conveyed by the conveyance unit, and a guide member provided upstream of a reading position where the reading unit reads the image information from the sheet with respect to a sheet conveyance direction. The guide member includes a sheet-like sheet member having elasticity. A leading end of a downstream side of the guide member in the sheet conveyance direction is a folded portion formed by folding back the sheet member.