Sheet processing device
AssigneeToshiba Tec Kabushiki Kaisha
InventorKazuki Miyata
Life of this patent
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Abstract
According to one embodiment, a sheet processing device includes a pair of folding rollers, a blade, and a fold-enhancing unit. The pair of folding rollers are provided rotatably about an axial line extending in an axial direction. The pair of folding rollers form a first nip. The blade pushes a sheet into the first nip along an imaginary reference plane including the first nip. The blade forms a fold line on the sheet in cooperation with the pair of folding rollers. The fold-enhancing unit enhances the fold line on the sheet passed through the first nip. The fold-enhancing unit includes a first member and a second member. The first member and the second member form a second nip on one side of the imaginary reference plane along a direction of a normal line to the imaginary reference plane and sandwich the fold line.
Claims14
A sheet processing device, comprising:
- a pair of folding rollers provided rotatably about an axial line extending in an axial direction and configured to form a first nip;
- a blade configured to push a sheet into the first nip along an imaginary reference plane including the first nip and form a fold line on the sheet in cooperation with the pair of folding rollers;
- a fold-enhancing component configured to enhance the fold line on the sheet passed through the first nip, the fold-enhancing component comprising a first member and a second member that form a second nip on one side of the imaginary reference plane along a direction of a normal line to the imaginary reference plane and sandwich the fold line;
- and
- a controller configured to control the fold-enhancing component to enhance the fold line on the sheet, only if a number of sheets passed through the first nip is equal to or greater than a predetermined number of sheets, wherein
- both of the first member and the second member constitute a roller moving along the fold line.
A sheet processing method, comprising:
- pushing, using a blade, a sheet into a first nip along an imaginary reference plane including the first nip and form a fold line on the sheet in cooperation with a pair of folding rollers, the pair of folding rollers provided rotatably about an axial line extending in an axial direction and configured to form the first nip;
- enhancing the fold line on the sheet passed through the first nip using a fold-enhancing component, the fold-enhancing component comprising a first member and a second member that form a second nip on one side of the imaginary reference plane along a direction of a normal line to the imaginary reference plane and sandwich the fold line;
- and
- controlling the fold-enhancing component to enhance the fold line on the sheet, only if a number of sheets passed through the first nip is equal to or greater than a predetermined number of sheets, wherein
- both of the first member and the second member constitute a roller moving along the fold line.
An image forming apparatus, comprising:
- an image forming component;
- and
- a sheet processing device, comprising:
- a pair of folding rollers provided rotatably about an axial line extending in an axial direction and configured to form a first nip;
- a blade configured to push a sheet into the first nip along an imaginary reference plane including the first nip and form a fold line on the sheet in cooperation with the pair of folding rollers;
- a fold-enhancing component configured to enhance the fold line on the sheet passed through the first nip, the fold-enhancing component comprising a first member and a second member that form a second nip on one side of the imaginary reference plane along a direction of a normal line to the imaginary reference plane and sandwich the fold line;
- and
- a controller configured to control the fold-enhancing component to enhance the fold line on the sheet, only if a number of sheets passed through the first nip is equal to or greater than a predetermined number of sheets, wherein
- both of the first member and the second member constitute a roller moving along the fold line.
Dependencies are inferred from the claim text.