Print head error checking apparatus and method
US7828406B2 · kind B2 · utility
0Cited by
2References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2008 |
| Grant date | Nov 9, 2010 |
| Priority date | — |
| Expiry date | Nov 28, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14354
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Provided are a print head error checking apparatus and method in which the residual oscillation of a piezoelectric element corresponding to each nozzle of a print head is sensed, the sensed residual oscillation of each piezoelectric element and a predetermined residual oscillation of the piezoelectric element are compared to each other, and whether a print head normally operates is checked in consideration of the results of the comparisons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.