Pressing unit for sheet folding device
AssigneeRicoh Company, Ltd.
InventorsKenji Hari, Manabu Yamanaka, Nagayasu Yoshida
Life of this patent
Estimating the term…
Abstract
A sheet processing apparatus is configured to press a fold line that is formed on a sheet. The sheet processing apparatus includes: a sheet supporting unit configured to support the sheet in a pressing direction for pressing the fold line; a pressing unit configured to press the fold line that is formed on the sheet that is supported by the sheet supporting unit; and a pressing-force generating unit configured to generate a pressing force for pressing the sheet supporting unit against the pressing unit at a central part in a direction along which the fold line is formed.
Claims49
A pressing device comprising:
- a shaft;
- a press member arranged around the shaft and configured to press a medium;
- a supporting unit facing the shaft and configured to support the medium from an opposite direction of a pressing direction;
- and
- a pressing-force generating unit connected with the supporting unit and configured to generate a pressing force for pressing the supporting unit toward the opposite direction, wherein
- the press member includes a part whose pressing position in a rotational direction of the shaft is different along an axis direction of the shaft, and
- the press member is configured to rotate with rotation of the shaft, when the shaft is rotated while immobilizing the medium on the supporting unit.
A pressing device comprising:
- a shaft;
- a press member arranged around the shaft and configured to press a medium;
- a supporting unit facing the shaft and configured to support the medium from an opposite direction of a pressing direction;
- and
- a pressing-force generating unit connected with the supporting unit and configured to generate a pressing force for pressing the supporting unit toward the opposite direction, wherein
- the press member is configured to rotate while changing a position where the press member contacts the medium as the shaft rotates while immobilizing the medium.
A processing device, comprising:
- a shaft;
- and
- at least one part arranged around the shaft, and over less than a full circumferential extent of the shaft, the at least one part to rotate together with the shaft;
- a supporting unit facing the shaft and configured to support a medium from a first side of the medium, the first side being opposite to a second side of the medium, the at least one part being placed on the second side;
- and
- a pressing-force generating unit connected with the supporting unit and configured to generate a pressing force for pressing the supporting unit from the first side toward the medium, wherein
- a spiral pattern is arranged only on each of the at least one part, and not on any other parts arranged around the shaft, to form an overall spiral pattern, and over all of an axial extent of the shaft on which the overall spiral pattern is arranged, the overall spiral pattern does not repeat itself.
Dependencies are inferred from the claim text.