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US 12,515,902 B2Granted
Sheet conveying device
AssigneeToshiba Tec Kabushiki Kaisha
InventorRyuta Ishikawa
Life of this patent
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Abstract
A sheet conveying device in an embodiment includes a first roller unit, a first conveyance path, a guide mechanism, and a control section. The first roller unit rotates and conveys a sheet. The first conveyance path conveys the sheet to the first roller unit. The guide mechanism is disposed along the first conveyance path and guides the conveyance of the sheet. The guide mechanism is capable of changing a conveyance path width. The control section sets the conveyance path width at a time when a leading end of the sheet passes a first position of the guide mechanism to first width. The control section sets the conveyance path width at a time when a trailing end of the sheet passes the first position to second width smaller than the first width.
Claims12
A sheet conveying device, comprising:
- a first roller configured to rotate while forming a first nip with another roller and convey a sheet having reached the first nip;
- a first conveyance path for conveying the sheet to the first roller;
- a guide mechanism disposed along the first conveyance path and configured to guide the conveyance of the sheet and change a conveyance path width, the conveyance path width exists in a second direction of the first conveyance path, if an upstream side in a conveying direction of the first conveyance path is represented as a first side in a first direction and a thickness direction of the sheet conveyed on the first conveyance path is represented as the second direction;
- a controller configured to control the guide mechanism to set the conveyance path width at a time when a leading end of the sheet passes a first position of the guide mechanism to a first width and set the conveyance path width at a time when a trailing end of the sheet passes the first position of the guide mechanism to a second width smaller than the first width;
- a second roller present on the first side in the first direction of the first roller and configured to rotate while forming a second nip with yet another roller and convey the sheet having reached the second nip;
- and
- a sensor configured to detect passage of a trailing end of the sheet in a second position on the first side in the first direction of the second roller, wherein
- the controller sets the conveyance path width to the second width if the sensor detects the passage of the trailing end of the sheet in the second position.
5 more elements
A sheet conveying method, comprising:
- rotating a first roller while forming a first nip with another roller and conveying a sheet having reached the first nip;
- conveying the sheet to the first roller via a first conveyance path;
- guiding, using a guide mechanism disposed along the first conveyance path, the conveyance of the sheet and changing a conveyance path width, the conveyance path width exists in a second direction of the first conveyance path, if an upstream side in a conveying direction of the first conveyance path is represented as a first side in a first direction and a thickness direction of the sheet conveyed on the first conveyance path is represented as the second direction;
- setting the conveyance path width at a time when a leading end of the sheet passes a first position of the guide mechanism to a first width and setting the conveyance path width at a time when a trailing end of the sheet passes the first position of the guide mechanism to a second width smaller than the first width;
- rotating a second roller present on the first side in the first direction of the first roller while forming a second nip with yet another roller and conveying the sheet having reached the second nip;
- detecting passage of a trailing end of the sheet in a second position on the first side in the first direction of the second roller;
- and
- setting the conveyance path width to the second width if the passage of the trailing end of the sheet in the second position is detected.
5 more elements
A sheet conveying method, comprising:
- rotating a first roller while forming a first nip with another roller and conveying a sheet having reached the first nip;
- conveying the sheet to the first roller via a first conveyance path;
- guiding, using a guide mechanism disposed along the first conveyance path, the conveyance of the sheet and changing a conveyance path width, the conveyance path width exists in a second direction of the first conveyance path, if an upstream side in a conveying direction of the first conveyance path is represented as a first side in a first direction and a thickness direction of the sheet conveyed on the first conveyance path is represented as the second direction;
- setting the conveyance path width at a time when a leading end of the sheet passes a first position of the guide mechanism to a first width and setting the conveyance path width at a time when a trailing end of the sheet passes the first position of the guide mechanism to a second width smaller than the first width;
- if the sheet is a first sheet having thickness equal to or larger than a predetermined value, setting the conveyance path width at a time when a trailing end of the first sheet passes the guide mechanism to the second width;
- and
- if the sheet is a second sheet having thickness smaller than the predetermined value, setting the conveyance path width at a time when a trailing end of the second sheet passes the guide mechanism to the first width.
4 more elements
Dependencies are inferred from the claim text.