Compact sheet cutter for a document reproduction machine
US5708345A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1996 |
| Grant date | Jan 13, 1998 |
| Priority date | — |
| Expiry date | Apr 15, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/2094
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A compact sheet feeding and cutting apparatus is disclosed which is particularly suitable for retrofitting to an existing document reproduction machine. The sheet feeding and cutting components are located within a common housing which can be mechanically attached to an existing machine. In one embodiment, no electrical connections are required between the reproduction machine and the feeding and cutting apparatus. A sheet cutting length is entered into local memory and controls the operation of a dc stepper motor in a sheet cutting mode and a sheet feeding mode. The motor is reversed and operates in a sheet feeding mode to drive feed rollers causing the sheet to unroll from a supply roll. The motor is operatively connected to the drive feed rollers and to the sheet cutter through separate, one-way clutches. The sheet is fed from the roll at a faster speed than the speed of sheet travel within the reproduction machine as it advances to a transfer station. This speed mismatch periodically creates a buckle in the moving sheet which contacts a switch causing it to open and close. The switch thus controls an on/off operation of the motor changing it from a sheet feeding mode into a she…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.