Defect detection device of a print head and method of...

Details Defect detection device of a print head and method of... Defect detection device of a print head and method of...

2005-12-14

2009-08-11

Nguyen, Lam S (Department: 2853)

Incremental printing of symbolic information

Ink jet

Controller

C347S010000, C347S013000

Reexamination Certificate

active

07571975

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.

REFERENCES:
patent: 6375299 (2002-04-01), Foster et al.
patent: 6435672 (2002-08-01), Groninger et al.
patent: 1 452 318 (2004-09-01), None

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