A printing jig includes bases to be fitted to a printing apparatus, a first holder fittable to each of the bases, and a second holder fittable to each of the bases. The first holder is able to hold one or more first substrates. The second holder is able to hold one or more second substrates different in size from the first substrate or substrates. The first holder includes a first fitting portion to be fitted to each of the bases. The second holder includes a second fitting portion to be fitted to each of the bases. Each of the bases is structured such that the first fitting portion and the second fitting portion are both fittable thereto.

Certain examples of apparatus for applying fluid in a printing system are described. The apparatus comprise a first chamber having a first aperture extending along a first axis, and a second chamber having a second aperture extending along a second axis, wherein the first axis is substantially parallel to the second axis. The second chamber is movable with respect to the first chamber. Also, methods for supplying a fluid, and printing systems are described.

According to an example, a media roll support may comprise a sliding element movable along a guide, a hub to receive the media roll and a coupling plate. The hub may comprise an elastic element biased towards a first side of the media roll. The coupling plate may be attached to the hub and to the sliding element. Upon holding the media roll, a deformation of the elastic element may tilt the sliding element. The tilting of the sliding element may lock the sliding element movement, thereby preventing its movement.

A roll holder is for a label roll of linerless labels wound in a crosswise manner. The roll holder has: a horizontally arranged spindle, which is held by a stand on at least one side, and a rotatable roll mount, which is oriented in parallel with the spindle, and which is mounted on the spindle. The roll mount is mounted on the spindle in a linearly displaceable manner using at least one linear bearing.

A printing system comprises a printhead to eject a print fluid to a deposition region. Print media are held by vacuum suction against a movable support surface, which moves over a vacuum platen to transport the print media through the deposition region. The vacuum platen has platen holes through which the vacuum suction is communicated. Multiple vacuum plenums are provided to supply the vacuum suction to different groups of the platen hoes. A first vacuum plenum is fluidically coupled to a first group of the platen holes located at least partially in the deposition region, and to a second group of platen holes located upstream of the first group. A second vacuum plenum is fluidically coupled to a third group of the platen holes comprising at least some platen holes located between the first and second groups of platen holes.

A printing system comprises a printhead to eject a print fluid to a deposition region. Print media are held by vacuum suction against a movable support surface, which moves over a vacuum platen to transport the print media through the deposition region. The vacuum platen has platen holes through which the vacuum suction is communicated. Multiple vacuum plenums are provided to supply the vacuum suction to different groups of the platen holes. A first vacuum plenum is fluidically coupled to a first group of the platen holes located at least partially in the deposition region, and to a second group of platen holes located upstream of the first group. A second vacuum plenum is fluidically coupled to a third group of the platen holes comprising at least some platen holes located between the first and second groups of platen holes.

A control apparatus comprises: a grouping unit that divides a plurality of sheets each associated with image data included in a processing target job into groups each having a predetermined size; and a control unit that controls feeding of a sheet from a feeding unit onto a conveyance path and refeeding of a sheet which has been conveyed on the conveyance path onto the conveyance path, wherein the predetermined size is not less than a maximum sheet size used in the processing target job, a plurality of groups can be conveyed on the conveyance path, and the control unit controls feeding and refeeding for each group grouped in the grouping unit.

An image recording apparatus for recording an image on a sheet includes a recording section which records the image on the sheet in a transport passage for transporting the sheet in a transport direction and multiple plates which are spaced apart from each other in a widthwise direction. These multiple plates include a first type of plate and a second type of plate. Plates of a first type of plate are configured to overlap a sheet when viewed in a direction perpendicular to the transport direction and the widthwise direction, while plates of the second type of plate do not.

A printing apparatus includes a transport portion that transports a medium, a printing head that performs printing on the medium, a medium detection device that is arranged upstream of the printing head in a transport direction of the medium and detects a side edge of the medium in a width direction intersecting with the transport direction, and a control unit that controls the transport portion, the printing head, and the medium detection device.

A conveying device includes a restrictor disposed at a predetermined distance from a surface of a sheet material conveyed along a sheet-material conveyance path. The restrictor includes a sheet-material opposing portion that opposes the sheet-material conveyance path. The sheet-material opposing portion is movable to a downstream side in a sheet-material conveyance direction.