Device for automatically positioning a sheet on a platen of an office machine
US4489931A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1981 |
| Grant date | Dec 25, 1984 |
| Priority date | — |
| Expiry date | Oct 20, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J13/16
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Device for automatically positioning a sheet on an office machine platen, including a lower guide element to guide the sheet toward the writing line of the platen and an upper guide element to guide the sheet towards the top. During the introduction of the sheet, an electromagnet is energized to let the lower guide element turn with the platen, accompanying the sheet beyond the writing line. The electromagnet also causes the contemporary separation of the upper guide element from the platen. When the sheet reaches a predetermined position with respect to the writing line, the electromagnet is de-energized and a spring again brings the two elements to the rest position. An automatic introduction mechanism sequentially transfers the sheets from a hopper to the platen and from the platen to a sheet stacker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.