Ink ejection head

Details Ink ejection head Ink ejection head

1982-12-13

1984-05-15

Goldberg, E. A.

Recorders

Record receiver deforming

346140R, G01D 1518

Patent

active

044491352

ABSTRACT:
An ink ejection head having a body and a nozzle member which is mounted on the head body through a nozzle holder. To facilitate the ease of machining, the nozzle member is formed with a generally cup-shaped recess first and then a nozzle hole for ejecting ink. The space defined between the wall of the cup-shaped recess and the nozzle holder is filled with a projection extending from the nozzle holder or a flexible member. A passageway extends throughout the projection or the flexible member to provide fluid communication between the nozzle hole and an ink chamber defined in the head body. The projection or the flexible member minimized a diametrical step conventionally defined between the nozzle hole and the cup-shaped recess, so that bubbles drawn into the nozzle hole upon termination of an ink ejection can be released to the outside within a short period of time.

REFERENCES:
patent: 4005435 (1977-01-01), Lundquist et al.
patent: 4379303 (1983-05-01), Nakagaki et al.

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