Punching device in a sheet finisher for an image forming apparatus
US6783124B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2002 |
| Grant date | Aug 31, 2004 |
| Priority date | — |
| Expiry date | Nov 12, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/541
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A sheet finisher for an image forming apparatus of the present invention includes a conveying device for conveying a sheet and a punch unit for punching the sheet being conveyed by the conveying device. A sheet edge sensor senses the edge of the sheet, which is being conveyed by the conveying device, parallel to the direction of sheet conveyance. A drive source moves the sheet edge sensor in a direction perpendicular to the direction of sheet conveyance. Another drive source moves the punch unit in the direction perpendicular to the direction of sheet conveyance in accordance with information output from the sheet edge sensor. A controller controls the two drive sources by a preselected pulse ratio, thereby causing the punch unit to accurately punch the sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.