Movable ink jet thermal printing head to prevent ink stoppage

Details Movable ink jet thermal printing head to prevent ink stoppage Movable ink jet thermal printing head to prevent ink stoppage

1988-06-24

1990-04-10

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

G01D 1516, B41J 304

Patent

active

049164686

ABSTRACT:
This invention relates to an ink jet printing head comprising in combination a thermal head having a plurality of thermal dot elements, a guide member having a plurality of grooves corresponding to the thermal dot elements respectively and being in contact with the thermal head, and an ink supplying passageway for supplying ink to the grooves. The rear ends of the grooves are closed and the thermal head and guide member are movable with respect to each other. All of the ink in each of the grooves is respectively and completely jetted out of the grooves together with steam caused by the thermal dot elements producing heat. Ink bubbles do not remain in the grooves, thereby avoiding an overheating condition of the thermal head in an ink-less condition thereby eliminating blockage.

REFERENCES:
patent: 1967900 (1934-07-01), Perry
patent: 4314259 (1982-02-01), Cairns
patent: 4490728 (1984-12-01), Vaught
patent: 4723136 (1988-02-01), Suzumura
patent: 4803499 (1989-02-01), Hayamizu

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