Document feeder with sheet edge regulating mechanism
US4957285A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 5, 1989 |
| Grant date | Sep 18, 1990 |
| Priority date | — |
| Expiry date | Apr 5, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00185
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A document feeder for use in a copy machine includes a gate plate disposed between a document sheet stacker and a sheet separator for separating a sheet from the bottom of a stack of document sheets. The gate plate is adapted to be lifted to regulate the passage of the stack of document sheets so that when the gate plate is lowered, the leading edges of the document sheets in the stack come in contact with the gate plate, whereby the leading edges of the documents are aligned, and while the gate plate is lifted upwardly, the stack of document sheets passes under the gate plate. The document feeder further includes a sheet edge-regulator attached to the gate plate so that when the gate plate is lifted upwardly, the sheet edge-regulator is moved adjacent the upper surface of the stack of document sheets and regulates the leading edge of the stack of document sheets so as to pass under the gate plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.