Capstan bodies in printer rollers
US5205663A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1991 |
| Grant date | Apr 27, 1993 |
| Priority date | — |
| Expiry date | Jun 7, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J11/057
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A printing mechanism such as a thermal printer includes an elastomer coated platen having a circumference smaller than the printing length of an image to be reproduced on a print medium. The platen has a width which is wider than the width of the print medium. The platen includes a rigid central longitudinally-disposed shaft, and opposing end sections. Each end section extends under the nearest edge of the print medium from an associated end of the platen, and includes means for coupling a contacting print medium to a rotation of the shaft. In a preferred embodiment, the coupling means is formed of a non-elastomeric thin-walled cup either disposed near the surface of the platen within the elastomer coating or at the surface of the platen with a thin layer of fine grit particles formed thereon. Each thin-walled cup is fixedly connected to the shaft by a rigid torsion coupling member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.