Method and apparatus for controlling an ink-jet print head temperature
US6231153A · kind A · utility
30Cited by
13References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 25, 1997 |
| Grant date | May 15, 2001 |
| Priority date | — |
| Expiry date | Apr 25, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14387
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink-jet print head having a dual function thermal controller is disclosed. In a thin-film print head apparatus, a buried resistive layer is located generally circumscribing the other active elements of the print head, viz., the drop generators and the firing logic. During printing operations, the buried resistive layer is used to sense print head temperature. When the print head temperature falls beneath a predetermined minimum limit, the buried resistive layer is activated to act as a heater for the entire print head. Alternatively, the heater can be cycled at predetermined intervals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.