Apparatus and method for detecting ink-discharge amount for...

Details Apparatus and method for detecting ink-discharge amount for... Apparatus and method for detecting ink-discharge amount for...

2005-02-08

2005-02-08

Nguyen, Thinh (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S007000, C347S019000

Reexamination Certificate

active

06851788

ABSTRACT:
An apparatus detecting an amount of ink discharged by a printer, the printer having a plurality of heaters and corresponding nozzles and performing printing by applying pulses to the heaters to heat the heaters and discharge ink through the corresponding nozzles, the apparatus including a detector connected to the heaters that detects a state change of the heaters and output a state change signal; and an ink discharge amount calculator that calculates an amount of discharged ink corresponding to the state change output signal from the detector.

REFERENCES:
patent: 4550327 (1985-10-01), Miyakawa
patent: 5617121 (1997-04-01), Tachihara et al.
patent: 5856834 (1999-01-01), Murphy, III
patent: 5929875 (1999-07-01), Su et al.
patent: 6631972 (2003-10-01), Yazawa

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