Repetitive mode for thermal printing lift-off correction
US4572687A · kind A · utility
12Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1984 |
| Grant date | Feb 25, 1986 |
| Priority date | — |
| Expiry date | Jul 31, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J29/36
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Ribbon (22) in thermal printing has an outer layer which adheres to printed characters of intermediate temperatures, lower than printing temperatures. The printhead (7) has a column of electrodes (9) which sweep across the character area. Erase mode selector (16) causes erase of the same character twice, first at a temperature level moderately more than the normal erase level and one at a temperature moderately less than the normal erase level. Erasure in that dual mode is generally effective even for extreme conditions of paper, environment and other influences.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.