Sheet folding device, image forming apparatus using this device, and sheet folding method
AssigneesKabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
InventorHideaki SUGIYAMA
Life of this patent
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Abstract
According to an embodiment of the invention, a sheet folding device includes a pair of folding rollers which nips a sheet between the folding rollers and thus folds the sheet, a folding blade which pushes the sheet in between the pair of folding rollers, and a folding blade control unit which controls the folding blade to fold a first sheet with the pair of folding rollers, then push a second sheet into the fold of the first sheet, and fold the second sheet with the pair of folding rollers over the first sheet.
Claims20
A sheet folding device comprising:
- a pair of folding rollers which nips a sheet between the folding rollers and thus folds the sheet;
- a folding blade which pushes the sheet in between the pair of folding rollers;
- and
- a folding blade control unit which controls the folding blade to fold a first sheet with the pair of folding rollers, then push a second sheet into the fold of the first sheet, and fold the second sheet with the pair of folding rollers over the first sheet.
A sheet folding device comprising:
- a pair of folding rollers which nips a sheet between the folding rollers from a side where the folding rollers rotate inward toward each other, and thus folds the sheet;
- a stack tray which has an aperture to the pair of folding rollers and on which the sheet to be folded is placed;
- a folding blade which pushes the sheet placed on the stack tray in between the pair of folding rollers via the aperture;
- and
- a folding blade control unit which controls the folding blade to fold a first sheet with the pair of folding rollers, then push a second sheet into the fold of the first sheet, and fold the second sheet with the pair of folding rollers over the first sheet.
An image forming apparatus using a folding device, the apparatus comprising:
- an image forming unit which forms an image to be printed on a sheet;
- a printing unit which prints the image formed by the image forming unit;
- a pair of folding rollers which nips a sheet printed by the printing unit between the folding rollers and thus folds the sheet;
- a stack tray which has an aperture to the pair of folding rollers and on which the sheet to be folded is placed;
- a folding blade which pushes the sheet placed on the stack tray in between the pair of folding rollers via the aperture;
- and
- a folding blade control unit which controls the folding blade to fold a first sheet with the pair of folding rollers, then push a second sheet into the fold of the first sheet, and fold the second sheet with the pair of folding rollers over the first sheet.
A sheet folding method comprising:
- from a side where a pair of folding rollers rotates inward toward each other, pushing a first sheet in between the pair of folding rollers with a folding blade, and thus performing folding;
- pushing a second sheet in between the pair of folding rollers after a predetermined time from start of this first folding;
- and
- controlling the folding blade to fold the second sheet with the pair of folding rollers from above the first sheet.
Dependencies are inferred from the claim text.