Sheet-thickness detector device and sheet-processing apparatus, image-forming apparatus having the same
US6871042B2 · kind B2 · utility
41Cited by
24References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2003 |
| Grant date | Mar 22, 2005 |
| Priority date | — |
| Expiry date | Jun 18, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00738
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A sheet-thickness detector device has a sheet guide with a sheet-guide surface for guiding a sheet between a magnetic field sensor and a magnetic guide element. The magnetic field sensor, having an approach-guide plane disposed upstream in a sheet conveying direction for guiding the sheet to a detection surface, comes into direct contact with the sheet. By the structure mentioned above, the thickness of a sheet is detected so as to determine sheet double feeding and the like without producing sheet jamming.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.