A method of handling a sheet defect error in a duplex print process, wherein media sheets are successively supplied along a feed path and are moved past a print engine where a first image is printed on a first side of each sheet in a first print pass, the sheets are then returned, via a duplex loop that contains a sheet flipping mechanism, to the feed path upstream of the print engine so that a second image can be printed on a second side of each sheet in a second print pass, the finished sheets being then discharged in a predetermined page sequence, and wherein, when a sheet defect is found a first print pass of a sheet, the defective sheet is diverted into an eject path downstream of the print engine, and a print pass for an immediate successor of the defective sheet is skipped. The subsequent semi-finished sheets are recirculated in the duplex loop while the supply of fresh sheets into the feed path is interrupted, and duplex printing is resumed during or after recirculating the subsequent semi-finished sheets.

A paper ejection apparatus including: paper ejection trays to which printed sheets are selectively ejected; a main tray disposed lower than the paper ejection trays; an inspection result acquirer configured to acquire an inspection result of each of the printed sheets; a paper ejection controller configured to control paper ejection such that each of the printed sheets is ejected to the paper ejection trays before the inspection result is obtained by the inspection result acquirer; and a tray information manager configured to manage by associating identification information of each of the paper ejection trays with the inspection result of each of the printed sheets ejected on the paper ejection trays.

A paper ejection apparatus including: paper ejection trays to which printed sheets are selectively ejected; a main tray disposed lower than the paper ejection trays; an inspection result acquirer configured to acquire an inspection result of each of the printed sheets; a paper ejection controller configured to control paper ejection such that each of the printed sheets is ejected to the paper ejection trays before the inspection result is obtained by the inspection result acquirer; and a tray information manager configured to manage by associating identification information of each of the paper ejection trays with the inspection result of each of the printed sheets ejected on the paper ejection trays.

The present invention is to provide a sheet conveying apparatus capable of reliably detecting a full-load state of a storage section for storing sheets discharged from a sheet conveyance path when an abnormality such as multi feed is detected, a sheet feed apparatus is provided with a multi feed sheet storage section disposed below a common conveyance path to store multi-fed sheets with multi feed detected, and a flap member rotating between a first rotation position for supporting a sheet in the common conveyance path to be able to convey to the downstream side in a conveyance direction, and a second rotation position for guiding to the multi feed sheet storage section, and determines that the multi feed sheet storage section is in a full-load state in detecting that the flap member does not return to the first rotation position.

The present invention is to provide a sheet conveying apparatus capable of reliably detecting a full-load state of a storage section for storing sheets discharged from a sheet conveyance path when an abnormality such as multi feed is detected, a sheet feed apparatus is provided with a multi feed sheet storage section disposed below a common conveyance path to store multi-fed sheets with multi feed detected, and a flap member rotating between a first rotation position for supporting a sheet in the common conveyance path to be able to convey to the downstream side in a conveyance direction, and a second rotation position for guiding to the multi feed sheet storage section, and determines that the multi feed sheet storage section is in a full-load state in detecting that the flap member does not return to the first rotation position.

A printing system includes a printing unit, a determination unit, and a switching unit. The printing unit prints an image on a recording medium. The determination unit compares a prestored reference image and a read image corresponding to a reading result of a printed document in which the image is printed on the recording medium and determines whether a result of the comparison satisfies a predetermined condition. The switching unit switches a discharge destination of the recording medium based on a result of the determination. The switching unit switches a conveyance path of the recording medium based on whether the determination is performed.

A printing apparatus capable of communicating with at least an inspection apparatus and a processing apparatus, the printing apparatus comprising one or more controllers having one or more processors and one or more memories, the one or more controllers configured to receive a registration job for registration of image data in the inspection apparatus and an inspection job for execution of an inspection, to transmit, in a case where the registration job is received, image data based on the registration job to the inspection apparatus, to receive a notification of completion of the registration of the image data from the inspection apparatus, and to perform, in a case where the notification is received, control to perform printing based on the inspection job and to transmit an inspection instruction to the inspection apparatus.

Disclosed herein is a medium conveying apparatus in which unjamming can be efficiently performed. The medium conveying apparatus includes conveyance rollers configured to convey a card, a rotary unit configured to hold and rotate the card, sensors SN2 and SN26 configured to detect the distance the card has been conveyed, and a control section. If the distance the card has been conveyed that has been detected by the sensors SN2 and SN26 differs from a preset distance L1 (Yes in Step S320), the control section determines (in S328 and S336) whether the card can be positioned in a direction to be delivered from the rotary unit. If the card can be so positioned, a drive motor is controlled, rotating the rotary unit to position the card to be delivered.

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.

A stand-alone inspection apparatus inspects documents printed on a cut sheet, and includes: a sheet feeder capable of setting the documents in a sorted state; a sorting detector that detects the sorted state of the documents; an image reader that reads an image of the documents; an inspection part that inspects the documents on the basis of the read image; and a sheet ejector that ejects the inspected documents, wherein in a case where the documents in the sorted state are set in the sheet feeder, the sheet ejector ejects the documents in a state equivalent to the sorted state detected by the sorting detector.