Bidirectional ink sheet driving mechanism in a thermal transfer printer
US4812063A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1988 |
| Grant date | Mar 14, 1989 |
| Priority date | — |
| Expiry date | Mar 16, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J17/14
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The thermal transfer printer of the present invention rotates a take-up roll and supply roll for an ink sheet by means of a first friction ring, which transmits the forward directed rotation of a driving motor for carrying the ink sheet to a take-up roll for the ink sheet by the friction force thereof when the ink sheet is carried in the forward direction and applies the brake power to the take-up roll for the ink sheet by frictional force thereof when the ink sheet is carried in the backward direction, and a second friction ring, which transmits the backwardly directed rotation of the driving motor to a supply roll for the ink sheet by the frictional force thereof when the ink sheet is carried in the backward direction and applies the brake power to the supply roll by the frictional force thereof when the ink sheet is carried in the forward direction. Accordingly, the ink sheet can be carried under the stabilized condition in both the forward direction and the backward direction, whereby the ink sheet, which is carried together with a recording paper in the initial position setting of the recording paper, can be rewound to use without wastefulness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.