Print head capping device

Details Print head capping device Print head capping device

1997-11-06

2000-06-13

Le, N.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 33, B41J 2165

Patent

active

06074037&

ABSTRACT:
A cap is provided with a contact section for contacting and enclosing the periphery of a nozzle array of a print head when the print head is in a capped state, and a deforming diaphragm having a deformable bag-shaped section in a position enclosed by the contact section. In the case of a temperature change in an enclosed space between the contact section and the nozzle, the bag-shaped section expands or contracts to keep a constant pressure, thereby protecting a print head meniscus from breakage and accordingly preventing the occurrence of defective printing. Furthermore, the capping device is separate from a recording device, so that it can be attached to a head unit removed from a printer at the time of shipping the head unit from a factory, to thereby prevent the nozzle array from drying out.

REFERENCES:
patent: 4148041 (1979-04-01), Rosenstock
patent: 4684963 (1987-08-01), Naka
patent: 5146243 (1992-09-01), English et al.
patent: 5625385 (1997-04-01), Suzuki
patent: 5648802 (1997-07-01), Abe
patent: 5896143 (1999-04-01), Matsui et al.

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