Driving method of thermal printer
US5706043A · kind A · utility
10Cited by
1References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1995 |
| Grant date | Jan 6, 1998 |
| Priority date | — |
| Expiry date | Feb 13, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/38
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a driving method of a thermal printer, in which method heating elements are driven by strobe pulses consisting of preheat pulses and subsequent drive pulses that depend on a gradation level, the preheat pulse width and the frequency of basic clock pulses that are used to generate the strobe pulses are switched linearly with the temperature of a thermal head unit. In particular, based on data of preheat pulse widths and basic clock pulse frequencies for respective experimental head temperatures, preheat pulse widths and basic clock pulse frequencies for the other temperatures are calculated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.