An image forming apparatus includes: a state monitor that monitors an apparatus state; an electrostatic noise detector that detects electrostatic noise; and an erroneous detection determiner that determines whether or not the state monitor has erroneously detected a change in the apparatus state due to electrostatic noise from a detection result of the change in the apparatus state by the state monitor and a detection result of the electrostatic noise detector.

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.

An inspection device includes: a memory; and a controller that executes an inspection of an image of a sheet of paper by comparing the image of the sheet of paper output by a printing device for each of two or more jobs with a correct image of each image, wherein the controller stores, in the memory, an image judged to be an image defect in the inspection, and displays, on a display device, a list of images judged to be an image defect in the inspection of the two or more jobs.

An image reading device includes a reading unit that reads a document sheet and a reading standard surface and outputs read values corresponding to pixels arranged in a main scan direction, a control unit that processes the read values, and a storage unit storing information to be referenced by the control unit. In the storage unit, first data that is read values of the reading standard surface and serves as standards, and second data on ranges of variation, based on a change in a temperature, in the read values are stored. The control unit determines, based on the first data and the second data read from the storage unit and third data obtained by reading the reading standard surface after an acquisition of the first data, whether an abnormality exists in the pixels.

An information processing apparatus performs acquiring measurement results obtained by measuring a characteristic of a recording medium a plurality of times; inputting information corresponding to a type of the recording medium; acquiring an extraction range of the type indicated by the information, among extraction ranges set to respective types of recording media for determination of a type; setting, based on the measurement results and the type, a parameter for correcting the measurement results to reduce difference between the measurement results and the extraction range; correcting, by using the parameter, measurement results obtained by measuring a characteristic of a recording medium to be recorded; and extracting a candidate type of the recording media, the measurement results, based on the corrected measurement results and the extraction range.

An image forming apparatus includes a plurality of parts each configured to operate to form an image; and at least one processor configured to control an operation of the image forming apparatus. The at least one processor has a function of executing the following processing: error detection processing of detecting occurrence of an error of each part; failure portion identification processing of identifying a failure portion which is a cause of the error; and determination processing of determining, in a case where the image forming apparatus is reactivated after the identification of the failure portion by the failure portion identification processing, whether there is a failure in a part corresponding to the failure portion information before execution of a preparation operation for enabling an image forming operation.

An image forming apparatus which is capable of analyzing a failure of an IC that has a high degree of independence and in which no recording area can be added to an internal memory. The image forming apparatus has a controller equipped with a storage device. Execution results of a plurality of event processes for events relating to the controller are recorded in the storage device. What is recorded in the storage device is output from the controller. A scope of what is recorded in the storage device is specified.

A printer includes a printing unit configured to perform printing on a printing medium having an elongated shape, a camera configured to capture a print image formed, by being printed by the printing unit, on the printing medium, a storage unit configured to store image data of the camera, and a winding unit configured to wind the printing medium on which printing was performed by the printing unit, and a contact sensor and a position detection sensor that detect a defect affecting a quality of the print image, in which the storage unit is configured to hold, when the defect affecting the quality of the print image is detected, the image data containing a unit print image formed by unit printing operation at a time when the defect affecting the quality of the print image is detected.

An information processing apparatus includes a processor configured to acquire an additional processing program for performing additional processing in response to a connection of an additional processing apparatus configured to perform the additional processing for a function of the information processing apparatus, and store the acquired additional processing program in the information processing apparatus.

An image inspection device is provided with: an imaging unit configured to capture a printed image; an inspection unit configured to inspect a captured image obtained by capturing the printed image by the imaging unit; an image storage unit configured to hold the captured image; and a saving processing unit configured to record the captured image into the image storage unit. The saving processing unit determines a recording resolution at a time of recording the captured image into the image storage unit, in accordance with a result of an inspection by the inspection unit.