A second roller set is disposed separately from a first roller set in one direction of the conveyance direction, and includes an intermittent roller that generates, during one rotation, a conveyance enabled time of contacting the card and conveying the card and a conveyance disabled time of not contacting the card and not conveying the card. A third roller set is disposed separately from the second roller set. A reference guide wall receives abutments of a first end portion of the card and arranges a position of the card in the width direction at a reference position. An urging guide wall urges a second end portion of the card toward the reference guide wall by a first urging force. A support wall regulates a movement of the reference guide wall toward the urging guide wall at a position serving as the reference position.

A feeding unit to feed blanks in a packer machine has a frame supporting a hopper and conveyor. The hopper holds a stack of blanks and has a pick-up opening, through which one blank at a time can be retrieved from the stack. The conveyor moves the blanks along a moving path ending in the hopper. The feeding unit can be adjusted by a format change operation to contain blanks with different formats by changing the feeding unit from a first configuration for containing a first format to a second configuration for containing a second format, different from the first format. A plurality of different and interchangeable hoppers are provided, each associated with a corresponding format of the blanks. Each hopper is fixed to the frame in a removable manner in order to be replaced during a format change operation.

A sheet feeding device, which is included in an image forming apparatus and includes a device attachment body, includes a sheet container configured to accommodate a sheet, a support configured to support a lower face of the sheet in the sheet container, a sheet width regulator configured to regulate a position of the sheet in a sheet width direction, a conveying force applier configured to apply a sheet conveying force in a sheet conveying direction to the sheet in the sheet container, and a sheet guide disposed above the sheet in the sheet container and configured to regulate movement of the sheet in an upper direction.

An image forming apparatus configured to form images on a first surface and a second surface of a sheet includes an apparatus body, an image forming unit, a feed tray, and a return unit configured to return the sheet having an image formed on the first surface of the sheet toward the image forming unit. The return unit includes a first guide, a second guide, and an adjuster. The first guide is detachably attached to the second guide and includes a first roller and a positioned portion. The second guide is positioned in the apparatus body and includes a second roller facing the first roller, and a positioning portion configured to contact the positioned portion of the first guide, thereby positioning the first guide relative to the second guide. The adjuster is configured to adjust an orientation of the second guide relative to the apparatus body.

An attachment is attachable to and detachable from a sheet stacking board. The attachment includes an end fence configured to restrict a position of a trailing end of a sheet in a conveying direction. The end fence includes a facing surface facing the trailing end of the sheet. The facing surface includes an inclined surface inclined with respect to a vertical direction of a stacking surface on which the sheet is stacked, such that a higher part of the facing surface is located more upstream in the sheet conveying direction.

According to an embodiment, a sheet feeding mechanism includes a first elastic body. The first elastic body blocks a first reference line and a second reference line. The first elastic body has a first angle formed between the first elastic body and the first reference line, the first angle being an acute angle. The first reference line is a reference line along a take-out direction by the first roller. The second reference line is a reference line connecting a nip between the second roller and the third roller and a contact position of the first roller and a sheet.

A printing device includes a roll paper holder configured to accommodate a first roll paper and a second roll paper and having first and second side walls configured to contact side surfaces of the first roll paper, a remaining amount detecting section having a first projection projecting from the first side wall to detect a remaining amount of the first roll paper accommodated in the roll paper holder, a roll paper guide configured to be installed in the roll paper holder and having a third side wall configured to contact a side surface of the second roll paper when the second roll paper is accommodated in the roll paper holder, and a detection assistance section provided on the roll paper guide and having a second projection projecting from the third side wall in a state of being in contact with the first projection.

A feeding unit to feed blanks in a packer machine having: a frame; a hopper for holding a stack of blanks, supported by the frame, and having a pick-up opening, through which one blank at a time can be retrieved from the stack; and a conveyor, supported by the frame, which moves the blanks along a moving path ending in the hopper. The feeding unit can be adjusted by a format change operation to accommodate blacks of different formats by changing the feeding unit from a first configuration for containing a first format of blanks, to a second configuration for containing a second format of blanks, different from the first format. The hopper has a reference element, which, in use, is placed in contact with the stack of blanks to establish reference positions for the blanks relative to the frame that do not move due to a format change operation.

According to an embodiment, a sheet feeding mechanism includes a first elastic body. The first elastic body blocks a first reference line and a second reference line. The first elastic body has a first angle formed between the first elastic body and the first reference line, the first angle being an acute angle. The first reference line is a reference line along a take-out direction by the first roller. The second reference line is a reference line connecting a nip between the second roller and the third roller and a contact position of the first roller and a sheet.

In an example, there is provided a method including: receiving, at a processor, data specifying the shape of a blank to form a folded article; and determining, using the processor, based on the received data, a suction array layout to hold the blank against a media support, wherein the suction array layout conforms to the shape of the blank.