An image forming apparatus includes: a conveyance path that conveys a sheet; registration rollers that are arranged across the conveyance path and each comprise a nip part; a sheet locking member that locks a front end of a sheet conveyed in the conveyance path, where the sheet locking member swings between a first attitude and a second attitude, in the first attitude the sheet locking member locks the sheet on an upstream side of the nip part, and in the second attitude the sheet locking member is retracted to a downstream side of the nip part and allows the sheet to pass through the nip part; an energizer that energizes the sheet locking member to maintain the first attitude; and a hardware processor that detects deterioration of the energizer.

A recording apparatus includes a recording head, a loading unit, a feeding unit, a cover, a detection unit, and a determination unit. The feeding unit feeds a recording medium loaded on the loading unit to a recording position where the recording head performs the recording. The cover moves between an opening state and a closing state. The determination unit determines a size of the loaded recording medium based on a result of a width detection operation. The recording head records an image per a determination result. If the cover closing is detected before the recording is performed, the determination unit performs the width detection operation to determine the recording medium size loaded on the loading unit. If the cover opening is detected and the recording apparatus receives a recording instruction, the determination unit performs the width detection operation to determine the recording medium size loaded on the loading unit.

An image forming apparatus includes a sheet storage unit including a sheet tray on which one or more sheets are to be stacked, a sensor configured to detect that the sheet storage unit is being operated, and a processor configured to execute a predetermined process after the sensor detects that the sheet storage unit has been operated, and a predetermined condition relating to an occurrence of the sheet conveyance error is satisfied.

A controller starts sheet feeding at a primary sheet feeding speed, then momentarily stops a sheet feeding rotary member, and thereafter starts secondary sheet feeding. When the secondary sheet feeding speed equals a first speed, the controller momentarily stops the sheet feeding rotary member such that the leading end of a document sheet stops at a first stop position. When the secondary sheet feeding speed equals a second speed, the controller momentarily stops the sheet feeding rotary member such that the leading end of a document sheet stops at a second stop position. The second stop position is located downstream of the first stop position in the document conveying direction.

A document feeding device includes a document placement unit at which a document is placed, a feeding roller for feeding the document, and a ranging sensor for measuring a distance to the document located most upward on the document placement unit. A control unit stops feeding the document by the feeding roller based on post-processing distance data obtained by statistically processing time series data of the distance measured by the ranging sensor.

A sheet feed device includes: a tray provided in a device body in a manner capable of being pulled out and having a loading part that is moved up and down; an extension part attached to the device body to support a portion of a sheet to be fed through the tray; a lifting mechanism that has a lifting/lowering part for moving the loading part up and down and a driving part for lifting and holding the loading part via the lifting/lowering part; and a disconnecting part that disconnects the lifting/lowering part and the driving part when an uncoupling operation is accepted in a state in which the tray is accommodated in the device body.

A sheet processing apparatus includes circuitry configured to acquire a size of a two-ply sheet, in which two sheets are bonded together at one end, and a size of an insertion sheet; and control a sheet processing operation based on the size of the two-ply sheet and the size of the insertion sheet. The sheet processing operation includes inserting the insertion sheet in the two-ply sheet.

A sheet feeding device includes a sheet loading portion which is capable of an elevating operations, and on which a sheet is loaded, a feeding member for feeding the sheet loaded on the sheet loading portion, the feeding member being capable of elevating movement between a contacting position in contact with the sheet, and a distanced position distanced upward from the sheet, and a control portion that controls the elevating operation of the sheet loading portion and the elevating movement of the feeding member. When the feeding member at the contacting position moves to the distanced position, the feeding member is distanced upward from the sheet loaded on the sheet loading portion after the sheet loading portion starts a descending operation.

An object of the present disclosure is to provide a printing apparatus in which it is possible to easily clean the surface of a feeding roller and a separation roller by using a damp cloth or the like. One embodiment of the present invention is a printing apparatus including: a feeding roller that feeds a printing medium; a separation roller capable of selectively taking a state where a separating force that separates a plurality of printing media conveyed by the feeding roller one by one has occurred and a state where the separating force has not occurred at a position at which the separation roller is in pressure contact with the feeding roller; and a control unit configured to perform control to bring about a standby state where transmission of a driving force between a driving source of the feeding roller and the feeding roller is shut off in a state where the separating force has not occurred and the feeding roller and the separation roller abut each other.

A sheet conveying apparatus includes a pair of regulating units both of which are movable in a width direction in a document placement unit, a detection processing unit that detects a separation distance between the pair of regulating units, a restriction processing unit that restricts execution of a specific process of conveying a document when a difference between the separation distance detected at a specific timing and a reference distance exceeds a threshold value, and a cancellation processing unit that cancels the restriction on execution of the specific process when the separation distance detected after the restriction on execution of the specific process by the restriction processing unit is the same as the separation distance detected before the detection timing of the separation distance and on or after the specific timing.