A liquid ejection apparatus, including: a conveyor; and an ejector to eject a liquid; wherein each of an upstream roller pair, a first downstream roller pair, and a second downstream roller pair of the conveyor includes upper and lower rollers to respectively contact front and back surfaces of a recording medium, at least one of the upper and lower rollers being configured to give a conveyance force to the recording medium, wherein a rotation speed of the second downstream roller pair is higher than that of the first downstream roller pair, and the conveyance force of the first downstream roller pair is larger than that of the second downstream roller pair, and wherein the conveyance force of the second downstream roller pair is largest at a position thereof in the first direction which is nearest to the central position of the second downstream roller pair.

A media roll holder assembly a web-based printing system comprises a support for rotatably supporting the roll in an operative position, a holding element for rotatably holding the roll on the support, and a pivotable arm on which the holding element is provided. The pivotable arm is formed and positioned to position the holding element on the roll, such that a lifting force for lifting the roll from the support results in a holding force on the holding element in the first angular direction for holding the roll in the operative position on the support. The roll is then rotatably secured in its operative without excess angular forces acting on the roll. As the rotation of the roll is substantially unimpeded, the medium may be transported with great precision, resulting in high quality printing.

Provided is a sheet placement apparatus that is capable of changing the force of pushing a hopper configured to push up a sheet, without an increase in size, and a printing apparatus that is equipped with such a sheet placement apparatus.

Provided is a sheet placement apparatus that is capable of changing the force of pushing a hopper configured to push up a sheet, without an increase in size, and a printing apparatus that is equipped with such a sheet placement apparatus.

A conveyance apparatus includes a conveyance unit, a first cursor, a second cursor, and a controller. The conveyance unit conveys a sheet in a first direction. The first cursor regulates movement of the sheet in a second direction intersecting the first direction. The second cursor presses the sheet against the first cursor. The controller controls a speed at which the second cursor positioned away from the sheet moves toward the sheet.

A sheet stacking apparatus includes a conveyance unit configured to convey a sheet, a stacking unit on which the sheet conveyed by the conveyance unit is stacked, the stacking unit being configured to be lowered as an amount of the sheets stacked on the stacking unit increases, an abutment portion on which a leading edge of the sheet conveyed by the conveyance unit abuts, an urging unit configured to urge a leading edge portion, of the sheet, abutting on the abutment portion toward the stacking unit, and a control unit configured to adjust an urging force of the urging unit according to sheet information of the sheet conveyed toward the abutment portion.

A packing apparatus includes a sealing mechanism, a timing sensing section, and a control section. The sealing mechanism affixes tape continuously on portions of a cardboard box transported with major flaps thereof folded. The sealing mechanism includes an affixing roller to press the tape against a first side surface and the major flaps. The timing sensing section senses the timing at which the affixing of the tape on the first side surface is initiated. The control section controls pressing force exerted by the affixing roller, based on a result of the sensing performed by the timing sensing section, in such a way that the pressing force is reduced after the affixing of the tape on the first side surface is initiated.

Provided is a roller with pressure sensor. The roller includes a pressure sensor mounted to the roller. The pressure sensor includes a plurality of pressure sensing units distributed on a thin film. The pressure sensing units are electrically connected to each other with a metal wire but not in contact with each other. Also provided is a roll-to-roll device, which includes a roller mechanism and a pressure sensor.

Provided is a roller with pressure sensor. The roller includes a pressure sensor mounted to the roller. The pressure sensor includes a plurality of pressure sensing units distributed on a thin film. The pressure sensing units are electrically connected to each other with a metal wire but not in contact with each other. Also provided is a roll-to-roll device, which includes a roller mechanism and a pressure sensor.

A sheet processing apparatus which vertically conveys a sheet and performs sheet processing, the sheet having a folded part at a middle portion thereof and being in a vertical state with the folded part up and an edge part down, and the apparatus including: a supporting section which supports the folded part of the sheet from below; a sandwiching section which sandwiches both sides of the sheet supported by the supporting section; and a control section which controls the sandwiching section to execute a first sandwiching operation of sandwiching the sheet, to release the first sandwiching operation, and thereafter to execute a second sandwiching operation of sandwiching the sheet again.