Method for judging discharge state of ink jet recording head, and ink jet recording apparatus utilizing the same
US6305776A · kind A · utility
11Cited by
14References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1993 |
| Grant date | Oct 23, 2001 |
| Priority date | — |
| Expiry date | Apr 30, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/16579
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The temperature characteristics of an ink jet recording head are detected, and the result of detection is utilized for detecting the ink discharge state. Also a statistical processing on the temperature characteristics detected on plural recording heads enables exact detection of the ink discharge state, not effected by the individual difference of the recording heads. Also there is detected the abnormality in ink discharge, that may occur prior to the exhaustion of ink in the ink tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.