Ink jet printer with a cleaning apparatus for removing hardened

Details Ink jet printer with a cleaning apparatus for removing hardened Ink jet printer with a cleaning apparatus for removing hardened

1996-03-04

2000-12-12

Le, N.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

B41J 2165

Patent

active

061588393

ABSTRACT:
An ink jet printer in which hardened ink is readily and reliably removed from a nozzle plate. The ink jet printer includes a print head having a plural number of nozzle openings arrayed in the width direction of a recording paper, a head drive circuit for selectively outputting a first signal to cause a stream of ink droplets at a speed suitable for print and a second signal to cause ink to ooze through each nozzle opening, and a cleaning device with a rubbing function and which is usually positioned in a nonprinting region, but is movable in the longitudinal direction of the print head and with respect to a nozzle plate. In a cleaning mode, the cleaning device is operated while oozing ink from the nozzle openings. The hardened ink on the nozzle plate is dissolved by the oozing ink, and then removed therefrom through the rubbing and wiping operations of the cleaning device.

REFERENCES:
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patent: 4369456 (1983-01-01), Cruz-Uribe et al.
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patent: 5103244 (1992-04-01), Gast et al.
patent: 5250962 (1993-10-01), Fisher et al.
patent: 5557306 (1996-09-01), Fukushima et al.

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