Defect detection device of a print head and method of detecting defect of a print head
US7571975B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2005 |
| Grant date | Aug 11, 2009 |
| Priority date | — |
| Expiry date | Dec 19, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14354
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A defect detection device of a printer head, and a method of detecting defects, including first to Nth actuators providing a driving force for ejecting ink to ink chambers; a vibration signal generator generating vibration signals for vibrating the first to Nth actuators; a first switch receiving the generated vibration signals and outputting the vibration signals to a Kth actuator among the first to Nth actuators; a second switch receiving vibration signals of one or more among the first to Nth actuators and outputting an Lth vibration signal that corresponds to a vibration signal of the Lth actuator adjacent to the Kth actuator among the received vibration signals; and a defect detector comparing the Lth vibration signal output from the second switch with the specific vibration signal of the Lth actuator when there is no defect in a printer head and detecting defects in the printer head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.