Inkjet print head

Details Inkjet print head Inkjet print head

2007-08-14

2007-08-14

Meier, Stephen (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S072000

Reexamination Certificate

active

10916276

ABSTRACT:
An inkjet print head including a cavity unit which defines: (a) a plurality of nozzles; (b) pressure chambers arranged in a row or rows to be held in communication with the respective nozzles; and (c) at least one common chamber which stores an ink to refill the pressure chambers. Each common chamber is elongated along the corresponding row of the pressure chambers, such that the pressure chambers arranged in the corresponding row overlap the common chamber as viewed in the vertical direction. At least one of the pressure chambers arranged in the corresponding row overlaps the common chamber differently from the other pressure chambers arranged in the corresponding row. The cavity unit further defines at least one open-space chamber located between the pressure chambers and the common chamber or chambers in the vertical direction. Each open-space chamber overlaps the pressure chambers arranged in the corresponding row, as viewed in the vertical direction, such that the pressure chambers arranged in the corresponding row overlap the open-space chamber, equally with each other.

REFERENCES:
patent: 5402159 (1995-03-01), Takahashi et al.
patent: 5963234 (1999-10-01), Miyazawa et al.
patent: 6648452 (2003-11-01), Ito
patent: 2002/0175976 (2002-11-01), Okuda
patent: 0 759 361 (1997-02-01), None
patent: 1 057 633 (2000-12-01), None
patent: 4341853 (1992-11-01), None
patent: 11-254681 (1999-09-01), None
patent: 2002-137386 (2002-05-01), None

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