Wiping and recovery of an ink jet head with inclined discharge p

Details Wiping and recovery of an ink jet head with inclined discharge p Wiping and recovery of an ink jet head with inclined discharge p

1997-02-04

2000-10-24

Le, N.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 29, B41J 2165

Patent

active

061375047

ABSTRACT:
The present invention enables a more reliable and stable recovery operation on an ink jet head in which a shoulder is formed on a discharge port surface thereof. In the recovery operation, the discharge portion surface having an inclined surface portion constituting the shoulder is cleaned by a blade which is a rubber-like elastic member and which is movable on an axis on which discharge ports are arrayed on the discharge port surface. A distal end portion of the blade is parallel to the inclined surface portion and has a width which allows at least one edge of the blade to be within the inclined surface portion. Consequently, the blade can be pressed against the discharge port surface under a uniform contact pressure, and excellent cleaning can thus be achieved. In a structure in which a fence portion is provided on the discharge port surface having a shoulder or in which a balloon portion is provided in a cap portion, the contact between the cap and the discharge port surface is improved, and ink leakage which would occur during capping can be avoided.

REFERENCES:
patent: 3124852 (1964-03-01), Holderer
patent: 4410900 (1983-10-01), Terasawa
patent: 4819012 (1989-04-01), Kiyohara et al.
patent: 4952947 (1990-08-01), Kyoshima
patent: 5086305 (1992-02-01), Terasawa
patent: 5117244 (1992-05-01), Yu
patent: 5266974 (1993-11-01), Koitabashi et al.

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