An image inspection apparatus is capable of inspecting an image on a print sheet as an inspection object with high accuracy while conveying the print sheet from an upstream conveyance unit to a downstream conveyance unit. The image inspection apparatus inspects the print sheet conveyed at a first conveyance speed with a first conveyance unit of a printing device, with a first inspection unit, while conveying the print sheet at a second conveyance speed with a second conveyance unit of an inspection device. The first inspection unit is provided in a position downstream of an intermediate position between the first conveyance unit and the second conveyance unit by a length longer than a half of the length of the print sheet. Even when the first conveyance speed and the second conveyance speed are not substantially the same, no disorder occurs in the image read with the first inspection unit.

A page registration system may include, in an example, a media edge sensor to detect a location of an edge of a print media along a media feed path and in a direction non-parallel to the media feed path and a calibration sensor downstream of the media edge sensor to detect changes in the location of the edge of the print media in the direction non-parallel to the media feed path, and provide calibration data to the page registration system to correct changes in the location of the edge of the print media in the direction non-parallel to the media feed path.

An image recording apparatus is configured to perform a conveying process of a recording medium using a conveying roller and a discharging roller, a recoding process of recording an image on the printing sheet when the conveying process is not performed, and an adjusting process. In the adjusting process, among a plurality of conveying processes performed within a period from the start of the conveying process for an n-th printing sheet until the timing which is after the start of the conveying process for an (n+1)-th printing sheet, the conveying amount of the printing sheet subject to at least one conveying process is adjusted such that a timing when the trailing end of the n-th printing sheet passes through the discharging roller is within one of the acceleration period and the deceleration period of the conveying process for the printing sheet.

A printing apparatus includes: a printer; a sheet feeder including sheet feed trays; a sheet discharger to discharge and hold sheets printed by the printer; and a controller. Upon unloading of the sheets from the sheet discharger, the controller: determines whether to perform switching of a sheet feed source from a first sheet feed tray which is a latest sheet feed source of the sheet feed trays to a second sheet feed tray which is a sheet feed tray other than the first sheet feed tray of the sheet feed trays, based on a first sheet remaining amount in the first sheet feed tray and a second sheet remaining amount in the second sheet feed tray; and, upon determining to perform the switching, controls the sheet feeder to switch the sheet feed source from the first sheet feed tray to the second sheet feed tray.

A printing apparatus includes: a sheet discharge tray having an upstream portion tilted to extend downward in a direction of gravity; an upper member limiting a height of a space above the sheet discharge tray; a full sensor configured to detect an upstream end of a top sheet of sheets stacked on the sheet discharge tray; a counter configured to count a number of the sheets discharged onto the sheet discharge tray; and a controller. The controller determines whether to stop discharging of the sheets to the sheet discharge tray, based on a detection result of the full sensor upon the sheets to be stacked on the sheet discharge tray including only sheets each with uniform thickness and based on a count value of the counter upon the sheets to be stacked on the sheet discharge tray including a sheet with thickness varying partly.

In one example, a printing device is described. The printing device may include a transport roller to move a print medium through the printing device, a sensor to detect a trailing edge of the print medium, a processor, and a non-transitory computer-readable medium storing instructions. In one example, the instructions, when executed by the processor, cause the processor to move the print medium toward an output of the printing device via the transport roller after a printing to the print medium, detect the trailing edge of the print medium via the sensor during a movement of the print medium via the transport roller, and hold the print medium in a position in contact with the transport roller, in response to a detection of the trailing edge of the print medium via the sensor.

A printing apparatus includes a drying unit that includes a bring-in port where a medium is brought in and a bring-out port where the medium is brought out, and dries ink applied onto the medium, and in a case in which printing is temporarily stopped and a predetermined maintenance work is performed, the medium is transported in a transporting direction which is a direction toward the bring-out port from the bring-in port in a maintenance work period from starting of the maintenance work to finishing of the maintenance work or in a partial period of the maintenance work period.

A system includes an image forming station, which is configured to apply droplets of one or more printing fluids to a target substrate, so as to form an image thereon, and a substrate conveyor, which includes one or more perforated plates having multiple openings, and is configured to grip and move the target substrate to and from the image forming station for forming the image, the substrate conveyor includes one or more rotatable elements, which are fitted in the respective openings, and are configured to provide mechanical support to the target substrate, and when the target substrate moves over the one or more rotatable elements, at least one of the rotatable elements is configured to rotate in response to a physical contact with the target substrate.

Provided is a technique that enables proper sorting of discharged print media by suppressing curling of each of the print media sufficiently. A determining unit determines a curling suppressing operation to be executed such that in a case where sorting operation is executed, the suppressing operation having a higher effect of suppressing curling is executed than in a case where the sorting operation is executed. Then, a print control unit controls a print head to perform printing on print media while executing the suppressing operation determined by the determining unit.

There is provided a printing apparatus including: a housing including a wall with an opening; a mounting section configured to allow a cartridge to be mounted through the opening; a head with a nozzle to eject a liquid; a processing unit including a processing section configured to process a print medium; and a head carriage holding the mounting section and the head. The processing unit is located upstream of the head carriage in a conveyance direction of the print medium, the conveyance direction being a direction in which the print medium passes through a support facing the head.