Sheet feeder with optical sensor
US7588244B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2006 |
| Grant date | Sep 15, 2009 |
| Priority date | — |
| Expiry date | Mar 24, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2553/414
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
According to an aspect of the invention, there is provided a sheet feeder including; an air blowing unit floating and separating an upper portion of sheet of paper laid on a tray; and a transfer belt adsorbing and transferring uppermost sheet of paper laid on the tray; an optical analog sensor sensing an upper face of the uppermost sheet of paper and comprising a sensing face including a light receiving surface; a shield plate movable with the sheet, the shield plate detecting a position of upper face of the sheet of paper so as to keep a position of the uppermost sheet at a constant position and comprising; an elastic shield member having a C-character shape, a surface of the elastic shield member where the elastic shield member is contact with the light receiving surface of the optical analog sensor being in the same plane of a surface of the elastic shield member where the elastic shield member is contact with the shield-plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.