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US 6,565,076 B2Granted
Sheet post-processing apparatus
AssigneeNisca Corporation
InventorHideyuki Kubota
Life of this patent
Estimating the term…
Abstract
A sheet post-processing apparatus includes a head unit and an anvil unit movably disposed in a direction traversing the sheet discharge direction to provide a staple into a sheet bundle. A gap detecting device for detecting a gap between the head part and the anvil part is formed. If the gap is insufficient, the head part and the anvil part are not moved relative to the sheet bundle.
Claims18
A stapler unit comprising:
- a head part for driving a staple into a sheet bundle;
- an anvil part situated adjacent to the head part to receive and bend the staple driven by the head part;
- a holding station for placing the sheet bundle thereupon between the head part and the anvil part;
- first moving means for moving at least one of the head part and the anvil part toward the other to nip the sheet bundle placed on the holding station between the head part and the anvil part;
- second moving means for relatively moving the head part, the anvil part and the sheet bundle along surfaces of the sheet bundle placed on the holding station, said surfaces facing the head part and the anvil part;
- gap detecting means for detecting a gap between the head part and the anvil part;
- and
- inoperating means electrically connected to the gap detecting means and the second moving means for making the second moving means inoperable according to a detection result of the gap detecting means.
5 more elements
A sheet post-processing apparatus comprising:
- a head part for driving staples into sheet bundles discharged sequentially from an image forming apparatus and stacked;
- an anvil part for receiving and bending a staple driven from the head part;
- a holding station for placing a sheet bundle thereupon between the head part and the anvil part;
- first moving means for moving at least one of said head part and said anvil part toward the other to nip the sheet bundle placed on the holding station between the head part and the anvil part;
- second moving means for relatively moving the head part, the anvil part and the sheet bundle along surfaces of the sheet bundle placed on the holding station, said surfaces facing the head part and the anvil part;
- gap detecting means for detecting a gap between the head part and the anvil part;
- inoperating means electrically connected to the gap detecting means and the second moving means for making the second moving means inoperable according to a detection result of the gap detecting means;
- sheet bundle feeding means for feeding the sheet bundle stitched by the head part and the anvil part;
- and
- a stacking station for stacking the sheet bundle fed by the sheet bundle feeding means.
7 more elements
An image forming apparatus comprising:
- an image forming station for forming an image on a sheet;
- a head part for driving staples into sheet bundles discharged sequentially from the image forming station and stacked;
- an anvil part for receiving and bending a staple driven from the head part;
- a holding station for placing the sheet bundle thereupon between the head part and the anvil part;
- first moving means for moving at least one of said head part and said anvil part toward the other to nip the sheet bundle placed on the holding station between the head part and the anvil part;
- second moving means for relatively moving the head part, the anvil part and the sheet bundle along surfaces of the sheet bundle placed on the holding station, said surfaces facing the head part and the anvil part;
- gap detecting means for detecting a gap between the head part and the anvil part;
- inoperating means electrically connected to the gap detecting means and the second moving means for making the second moving means inoperable according to a detection result of the gap detecting means;
- sheet bundle feeding means for feeding the sheet bundle stitched by the head part and the anvil part;
- and
- a stacking station for stacking the sheet bundle fed by the sheet bundle feeding means.
8 more elements
Dependencies are inferred from the claim text.