Air damper, ink jet head, and ink jet recording apparatus

Details Air damper, ink jet head, and ink jet recording apparatus Air damper, ink jet head, and ink jet recording apparatus

2005-04-19

2005-04-19

Meier, Stephen D. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S084000, C347S085000, C347S086000, C347S087000

Reexamination Certificate

active

06880910

ABSTRACT:
An air damper for use with an ink jet head has a main body having an ink reservoir portion, and a film sealed to the main body and covering the ink reservoir portion to define therewith an ink reservoir. A reinforcement plate is attached to the main body and overlies the film to prevent rupture of the film due to expansion thereof when the ink jet head is pressure-filled with ink. The reinforcement plate has a recessed portion opposed to and facing the film to permit limited expansion of the film caused by pressure fluctuations of ink in the ink reservoir.

REFERENCES:
patent: 4935751 (1990-06-01), Hamlin
patent: 6017118 (2000-01-01), Gasvoda et al.
patent: 6485137 (2002-11-01), Karlinski et al.
patent: 6817707 (2004-11-01), Fowler et al.
patent: 0 927 638 (1999-07-01), None

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