Ink jet printer

Details Ink jet printer Ink jet printer

1997-12-22

2000-03-28

Tran, Huan

Incremental printing of symbolic information

Ink jet

Ejector mechanism

B41J 2165

Patent

active

060422181

ABSTRACT:
An ink jet printer has a printing head that ejects ink supplied from an ink source, from a nozzle to a recording medium, and a preliminary ejection unit that performs preliminary ink ejection from the nozzle to a waste ink receiving portion provided at a predetermined position, to achieve a good ink ejecting condition of the printing head. A timer measures elapsed time including time between an operation of preliminary ink ejection to the waste ink receiving portion and output of a printing instruction. A controller variably controls the amount of the ink to be preliminarily ejected to the waste ink receiving portion, corresponding to the length of the elapsed time measured by the timer. If a plurality of heads that eject different inks are provided, the amount of ink to be preliminarily ejected is varied corresponding to the elapsed time and properties of the inks.

REFERENCES:
patent: 5850236 (1998-12-01), Murai et al.

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