Device for a paper transport in an office machine in particular in a matrix printer
US4896979A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1988 |
| Grant date | Jan 30, 1990 |
| Priority date | — |
| Expiry date | Feb 24, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J11/30
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A device for a paper transport in an office machine, in particular in a matrix printer, presupposes the presence of side plates (1, 2), wherein a print-support surface (7) is supported and, in addition, a friction drive including a roller pair for individual sheets (9) to be transported or, respectively, endless webs (10) without edge perforation, and tractors (13) provided in pairs, which operate in push and pull operation. In order to provide a universal paper transport device for different kinds of paper, where the respective paper type is held ready, it is disclosed that the tractor pair (14a, 14b) can be driven with a tractor gear wheel (21) fixed against rotation on the tractor shaft (17), which tractor gear wheel (21) can be put in a force-transmitting connection with the paper drive motor (22) and where the tractor pair (14a, 14b) can be tilted with a lever drive (31) relative to the paper guide plane (32) in each case into an about tangential direction (33 ) relative to the circumferential upper side (36) or to the circumferential lower side (34) of the print-support surface (7).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.