Thermal ink-jetting resistor circuits
US8757778B2 · kind B2 · utility
6Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2012 |
| Grant date | Jun 24, 2014 |
| Priority date | — |
| Expiry date | Jun 22, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/0458
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Electronic circuitry compensates for variations or sags in electrical voltage within a thermal ink-jetting (TIJ) printing apparatus. Ground potential and other supply-related voltages are monitored and corresponding signals are provided. The signals are used, directly or by other circuitry, to affect the biasing of one or more transistors coupling TIJ resistors to supply voltage or ground nodes. Printing errors and related problems associated with voltage variations are reduced or eliminated accordingly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.