A glossiness detector includes a glossiness sensor, a glossiness corrector, and a reference plate. The glossiness corrector corrects glossiness detected by the glossiness sensor. The reference plate is used for correction processing of the glossiness sensor. Then, the glossiness corrector acquires a glossy reflection profile of the reference plate that has been detected in advance. The glossiness corrector corrects the glossiness according to the reference plate on the basis of the glossy reflection profile and a gloss distribution of the reference plate that has been detected by the glossiness sensor.

A sheet processing apparatus includes a sensing processing portion, a determination processing portion, an acquisition processing portion, an acceptance processing portion, and a setting processing portion. The sensing processing portion senses a sheet size. The determination processing portion determines whether the sheet size corresponds to any of a plurality of standard sizes based on a result of the sensing by the sensing processing portion. The acquisition processing portion acquires sheet attribute information that is determined for each sheet type based on a result of the determination by the determination processing portion or the result of the sensing by the sensing processing portion. The acceptance processing portion accepts a selection operation of selecting any of the acquired sheet attribute information. The setting processing portion sets a processing condition of a sheet based on the sheet attribute information selected by the selection operation.

An image forming apparatus includes a controller to move a sheet, in an image formation process on a first surface, to a standard position in a width direction and move the sheet, in an image formation process on a second surface, in the width direction based on a detected position in a case where a difference between the standard position and a first position in the width direction is equal to or smaller than a predetermined value. The controller moves the sheet, in the image formation process on the first surface, by the predetermined value in the width direction and moves the sheet, in the image formation process on the second surface, in the width direction based on detected positions in a case where the difference between the standard position and the first position in the width direction is larger than the predetermined value.

A supply item has toner for use in an imaging device. A chip has memory storing quanta indicating allowed usage of the supply item over its lifetime and a multiplier correlating the quanta to toner mass. The imaging device requires quanta to conduct imaging operations and loads the quanta and multiplier by way of a certificate stored in the memory. The imaging device retrieves quanta from the chip over time and both devices keep tally. Initialization between the supply item and imaging device includes providing encrypted and unencrypted instances of firmware versions and certificates from the supply item that the imaging device can compare for security. Alternatively, the supply item defines a fuser assembly, imaging unit, intermediate transfer member, or other component installed for use in the imaging device.

A sheet conveyance apparatus includes a rotary member and an opposing member to convey a sheet in a conveyance nip, and an abutting member abutting a surface of the rotary member, which is supported between a first position and a second position with respect to the abutting member. When the sheet is not passing through the conveyance nip the rotary member is positioned at the first position and abuts the opposing member, and when the sheet is passing through the conveyance nip the rotary member is positioned at the second position which is more separated from the opposing member than the first position. The abutting member abuts the rotary member regardless of which of the first position and the second position the rotary member is positioned at, and the opposing member and the abutting member are supported so they do not move in a radial direction of the rotary member.

An image forming system includes a detection unit to detect a recording material, having an image formed thereon by an image forming unit, placed on a processing tray, a staple unit, a discharge unit, and a discharge tray. A first mode of the system is to discharge the recording material conveyed from the image forming unit to the discharge tray via the processing tray and a second mode involves waiting for instruction for executing. When the detection unit detects the recording material inserted into the processing tray in the second mode, and a recording material first mode conveying instruction is issued in a state of waiting for the executing instruction after the recording material detection, a discharge operation is performed to discharge the recording material inserted into the processing tray to the discharge tray without the staple unit executing staple processing on the recording material inserted into the processing tray.

A sheet conveying device includes a sheet tray on which one or more sheets are placed, a pickup roller by which a sheet is picked up from the sheet tray, and an elevating mechanism. The elevating mechanism includes a shaft rotated by a motor, and a cam attached to the shaft and rotated together with the shaft to raise and lower the sheet tray with respect to the pickup roller. The sheet conveying device further includes a load applying mechanism contacting the shaft to apply a load thereto.

An image forming apparatus includes an image forming unit configured to form an image on a sheet based on image forming condition, a reader configured to convey the sheet and read a test image on the sheet while the sheet is conveyed, and a controller configured to control the image forming unit to form the image and the test image on a same sheet, control the reader to read the test image on the same sheet, and generate the image forming condition for adjusting a density of an image to be formed by the image forming unit, based on a reading result of the test image by the reader.

According to one embodiment, the information processing apparatus includes an acquisition unit, a derivation unit, and a determination unit. The acquisition unit acquires voltage information indicating a voltage applied to a heat generation unit that heats a sheet in an image forming apparatus. The derivation unit derives a fluctuation range in the voltage indicated by the voltage information acquired by the acquisition unit. The determination unit determines whether or not there is an indication of a malfunction in the heat generation unit using the fluctuation range derived by the derivation unit and a reference fluctuation range.

An image processing apparatus includes an image forming unit configured to form an image on a sheet, a heating device including a belt that contacts the sheet and a plurality of heating elements for heating the belt, a pressure roller configured to press the sheet against the belt, a voltage detection circuit configured to measure a voltage applied to the heating elements, and a controller configured to determine whether at least one of the heating elements is abnormal according to a voltage drop value that is based on voltages measured by the voltage detection unit before and after the plurality of heating elements is energized.