A registration system for a printing device and a method for controlling the same are disclosed. For example, the registration system includes at least one sensor, omni wheels, a motor coupled to each omni wheel, and a processor communicatively coupled to the at least one sensor, and the motors, wherein the processor calculates a desired movement to move the omni wheels based on the position of the print media.

An image forming apparatus includes a sheet supporting portion, a regulating portion, a feeding portion, an image forming unit, a sheet detection unit, and a control unit. The control unit is configured to execute, in a state where an image forming job in which an image is formed by the image forming unit is interrupted, a drive processing of the feeding portion such that (a) the feeding portion is driven at a first timing if the regulating portion is not set to a moved state within a predetermined period of time from when the sheet detection unit has detected the sheet, and (b) the feed portion is driven at a second timing later than the first timing if the regulating portion is set to the moved state within the predetermined period of time from when the sheet detection unit has detected the sheet.

A printer includes: a conveyor that performs a forward-conveyance operation for conveying a printing medium downstream in a conveying direction and a backward-conveyance operation for conveying the printing medium upstream in the conveying direction; a printing device; a roller provided downstream of the conveyor in the conveying direction; an opposed member opposed to the roller; a moving mechanism that moves a moving member, which is one of the roller and the opposed member, between (i) a first position at which the printing medium is nipped between the moving member and the other of the roller and the opposed member and (ii) a second position at which the moving member is separated from the printing medium; and a controller that executes a first conveyor-backward-conveyance processing for controlling the conveyor to perform the backward-conveyance operation in a state in which the moving member is located at the second position.

A printer includes: a conveyor that conveys a printing medium; a printing device that prints an image; a roller provided downstream of the printing device in a conveying direction; an opposed member opposed to the roller; a motor; a coupling mechanism that power-transmittably couples the motor and the roller to each other and rotate the roller in a first direction during driving of the motor, the first direction being a rotational direction for conveying the printing medium downstream in the conveying direction; and a moving mechanism that moves the roller between (i) a first position at which the roller is power-transmittably coupled to the motor by the coupling mechanism, and the printing medium is nipped by the roller and the opposed member and (ii) a second position at which the roller is power-transmittably coupled to the motor by the coupling mechanism and separated from the printing medium.

Provided is a printing apparatus that can be downsized while degradation in the print quality is suppressed. To perform skew correction on a second print medium on which printing is to be performed subsequent to a first print medium, a first conveying unit disposed upstream of the printing position where the printing unit performs printing on the print medium is stopped. Then, driving and stopping a third conveying unit disposed downstream of a second conveying unit is controlled, depending on whether the first print medium after printing has already passed by the second conveying unit when the first conveying unit is stopped, the second conveying unit being driven by the same driving source as for the first conveying unit and is disposed downstream of the printing position.

A registration system for a printing device and a method for controlling the same are disclosed. For example, the registration system includes at least one sensor to detect a position of a print media, a platform comprising a plurality of cellular omni wheels, and a processor communicatively coupled to the at least one sensor and the plurality of cellular omni wheels, wherein the processor calculates a desired movement of each one of the plurality of cellular omni wheels based on the position of the print media.

A sheet loading device includes a device body to load a sheet, a guide disposed extending in a sheet conveying direction in the device body, a restricting body to move along the guide of the device body and to restrict a position of an end portion of the sheet, and a securing body to attach to the restricting body and the guide and detach from the restricting body and the guide, and having an engaging body. The engaging body of the securing body engages with the guide at an arbitrary position on the guide in the sheet conveying direction. The restricting body is being secured to the device body according to engagement of the engaging body of the securing body with the guide of the device body.

A paper supply device is equipped with a paper supply unit that sequentially supplies a plurality of print media, and a control unit that controls the paper supply unit. During sequential supply of a plurality of print media at a paper supply interval, in the case that it is necessary to secure a paper supply interval which is set in advance and is longer than the paper supply interval, a reference paper supply interval, based on a point in time which is a natural number multiple of the paper supply interval, and a post print process paper supply interval are compared. Print media are supplied at the post print process paper supply interval in the case that the post print process paper supply interval and the reference paper supply interval are different.

Provided is a technique that enables application of additional conveyance force to a print medium and conveyance of various sizes of print media without multi-feed. A conveyance device includes a feed unit, a first conveyance unit that conveys a print medium, and a second conveyance unit that conveys a print medium fed by the feed unit to the first conveyance unit, and is capable of correcting the skew of a print medium by causing the second conveyance unit to convey the print medium with its leading edge in abutment with the first conveyance unit. This conveyance device is configured to cause the feed unit to apply conveyance force to a print medium conveyed by the second conveyance unit, depending on the size of the print medium in the conveyance direction.

An image forming apparatus includes a communication interface, an image forming unit, a plurality of sheet feeders, and a motor configured to selectively apply a drive force any of the sheet feeders. A transmission assembly switches transmission to any one of the sheet feeders. A controller receives preceding data from the communication interface, and, in response, controls the transmission assembly to initiate a switch of the transmission of the drive force to a standard sheet feeder among the plurality of the sheet feeders. In response to receipt control data received after the preceding data, the controller controls the image forming unit, motor, and transmission assembly to form an image on the sheet based on an image forming condition included in the control data.