Print head error checking apparatus and method

Details Print head error checking apparatus and method Print head error checking apparatus and method

2008-04-01

2010-11-09

Nguyen, Lamson D (Department: 2861)

Incremental printing of symbolic information

Ink jet

Controller

Reexamination Certificate

active

07828406

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.

REFERENCES:
patent: 7445307 (2008-11-01), Sato
patent: 7448717 (2008-11-01), Wanibe et al.

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