Integrated print head end-of-life detection
US8579395B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 12, 2008 |
| Grant date | Nov 12, 2013 |
| Priority date | — |
| Expiry date | Sep 25, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J29/393
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of detecting low ink levels in an integrated print head includes calibrating the integrated print head and producing a baseline temperature rise, performing an end-of-life test to produce a second temperature rise; and comparing the second temperature rise and the baseline temperature rise to estimate ink levels within the integrated print head. A computer product for detection of end-of-life events in integrated inkjet print heads includes computer code to perform a calibration procedure when an integrated print head is first connected to a printer; computer code to perform an end-of-life test on the integrated print head after a triggering event; and computer code to compare end of life test results with a baseline result from the calibration procedure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.