Substrate for a thermal ink jet printhead, a colour...

Details Substrate for a thermal ink jet printhead, a colour... Substrate for a thermal ink jet printhead, a colour...

2006-03-07

2006-03-07

Stephens, Juanita D. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S043000, C347S063000

Reexamination Certificate

active

07008047

ABSTRACT:
A substrate (10; 110; 210; 310) for an ink jet printhead comprising: at least three slots (12a,12b,12c) of elongated shape, oriented parallel to one another lengthwise in a vertical direction (13); three corresponding actuating banks (16a,16b,16c); a plurality of drive circuits (18); and a plurality of terminals (21, 21a,21b), lesser in number than the ejection actuators (16), connected to the drive circuits (18) for receiving external signals, wherein at least two (12a,12b) of the three slots are arranged side by side along the respective long edges in an upper portion (10a) of the substrate, and the third slot (12c) is arranged in a lower portion (10b) of the substrate, and wherein moreover the terminals (21) connected to the drive circuits are arranged in a line along the edges (11a,11b) of the substrate (10) parallel to the slots and therefore to this given vertical direction (13). This substrate has a robust structure and is less likely to crack in the zone of the slots.

REFERENCES:
patent: 4812859 (1989-03-01), Chan et al.
patent: 5030971 (1991-07-01), Drake et al.
patent: 5455610 (1995-10-01), Harrington
patent: 0 845 359 (1998-06-01), None
patent: 0 913 261 (1999-05-01), None
patent: 1 080 898 (2001-03-01), None
patent: WO 01 05595 (2001-01-01), None

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