An image forming apparatus is provided. The image forming apparatus includes a print engine to form an image on a sheet, a feeding apparatus to pick up a sheet loaded onto a knock-up plate and feed the picked-up sheet to the print engine by using a pick-up roller, a feed roller, and a registration roller, and a processor to, based on a print data being received, control the print engine and the feeding apparatus and allow the received print data to be printed. The processor may variably control a feeding speed of the feed roller and allow the picked-up sheet is conveyed to the registration roller within a predetermined time.

An image forming apparatus includes a sensor configured to detect a length of a sheet, which is placed on a platen, in a predetermined direction and a controller. The controller is configured to convert an image signal based on a conversion condition, control the image forming unit to form an image based on the converted image signal, and execute calibration in which the conversion condition is generated. The controller is configured, in a case in which the calibration is to be executed, to acquire information related to a size of a sheet on which a test chart is to be formed, select a sheet based on the information, form the test chart on the selected sheet, acquire reading data output from the reader, and generate the conversion condition based on the reading data.

An image forming apparatus extracts a pagination image from original document image data of each of a plurality of original documents, specifies a last-digit image corresponding to the ones place of a pagination, arrays a plurality of pagination images in a reading order of original documents beginning with an original document earliest read to form a matrix with n rows and ten columns, sets a row including ten different last-digit images as a reference row, sets a row after the reference row as a first check row, determines, in order from a first column, whether a pagination image of the first check row is a first subject pagination image differing in last-digit image from a pagination image in the identical column of the reference row, and, if determining that some pagination image or another is the first subject pagination image, determines that multi feed has occurred.

A recording device includes a recording unit configured to perform recording on a recording target medium, a first conveyance path that is a conveyance path of the recording target medium including an opposite position that faces the recording unit, and conveyance of the recording target medium in a first direction, a second conveyance path being coupled to the first conveyance path at a position downstream of the recording unit in the first direction, the second conveyance path being coupled to the first conveyance path also at a position upstream of the recording unit in the first direction and configured for conveyance of the recording target medium to the first conveyance path with a surface of the recording target medium inverted, and an insertion port configured to enable insertion of a recording target medium as an insertion material to the second conveyance path from outside.

A printing system includes a printer and an information processing device that includes a processor and a memory storing processor-executable instructions, the instructions being configured to, when executed by the processor, cause the processor to accept a print instruction, in response to accepting the print instruction, determine whether to instruct the printer to start a pre-printing operation based on preparation instruction information, in response to determining to instruct the printer to start the pre-printing operation, transmit the preparation instruction information to the printer, in response to determining to instruct the printer to start the pre-printing operation and transmitting the preparation instruction information to the printer, generate print data based on specified contents data, and transmit print instruction information to the printer.

In a medium conveying device, a projector projects light, a projection light amount of the light changes, at every fixed time, to a first projection light amount and a second projection light amount less than the first projection light amount, a receiver receives the light projected from the projector, a processor determines, at fixed sampling timings, whether a reception light amount of the receiver is at a first reception light level or a second reception light level smaller than the first reception light level, determines, when the reception light amount alternately changes to the first reception light level and the second reception light level, that a medium is not present on a conveying path, and determines, when the reception light amount is fixed to either the first reception light level or the second reception light level, that the medium is present on the conveying path.

A medium transport unit includes an upstream route in which a print sheet is transported, a first switchback route, a second switchback route, a first guide route, a second guide route, a guide flap configured to switch the route so that the print sheet in the upstream route is transported either toward the first guide route or toward the second guide route, a first discharge route from which the print sheet in the first switchback route is discharged, a second discharge route from which the print sheet in the second switchback route is discharged, and a downstream route passing between the first switchback route and the second switchback route and having an upstream end connected to a junction of downstream ends of the first discharge route and the second discharge route.

A position detection device includes a background member, a reader, and processing circuitry. The background member has a higher absorption characteristic in an invisible wavelength region than in a visible wavelength region. The reader opposite the background member irradiates a recording medium having a mark and the background member with light of a visible wavelength to output a visible image or with light of an invisible wavelength to output an invisible image. The processing circuitry is configured to: detect an end position of the recording medium and a position of the mark on the recording medium from a read image output from the reader; and select the visible or invisible image as the read image used for position detection, according to an absorption characteristic of a color material forming the mark read by the reader and an absorption characteristic of the recording medium in the invisible wavelength region.

Example media scanning assemblies are disclosed. In an example, the media scanning assembly includes a media feeder assembly including an output tray, an input tray disposed vertically lower than the output tray, and a first scanning device. In addition, the media scanning assembly includes a flatbed scanning assembly coupled to the media scanning assembly. The flatbed scanning assembly includes a transparent platen and a second scanning device to move relative to the platen. The media feeder assembly includes a media path extending from the input tray, across a portion of the platen, to the output tray, and the media feeder assembly is to advance media along the media path from the input tray to the output tray so that the first scanning device is to scan a first side of the media and the second scanning device is to scan a second side of the media through the platen.

A medium-discharging device includes: a device main body including a medium-discharging section that discharges a medium; a medium-receiving tray that receives the medium discharged by the medium-discharging section; and a pressing member that is configured to be attached to and detached from to the device main body and presses the medium discharged by the medium-discharging section against the medium-receiving tray in a state in which the pressing member is attached to the device main body, in which the pressing member is configured to switch, in the state in which the pressing member is attached to the device main body, between a first state in which the pressing member comes into contact with the medium-receiving tray and a second state in which the pressing member retreats upward so as to be apart from the medium-receiving tray.