Liquid jet head

Details Liquid jet head Liquid jet head

2007-05-04

2009-12-15

Do, An H (Department: 2853)

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

Reexamination Certificate

active

07631964

ABSTRACT:
A liquid jet head and apparatus prevent an increase in the viscosity of liquid in the liquid path during long term storage. The recording head has a liquid path unit1with nozzle openings8,pressure generation chambers7,liquid reservoirs9,and a diaphragm5,and a head case2bonded to the liquid path unit1.A damper chamber12for releasing pressure change inside the liquid reservoir is formed at a part of the head case or seal plate5corresponding to the liquid reservoir9.A release path14B for releasing pressure in the damper chamber to the air is formed in the head case. A control path14A communicating with the damper chamber and release path and having a specific flow resistance restricting dispersion of moisture vapor from the liquid is formed in the head case and/or seal plate.

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patent: 2002-127407 (2002-05-01), None

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