Ink jet print head photoresist layer having durable adhesion cha

Details Ink jet print head photoresist layer having durable adhesion cha Ink jet print head photoresist layer having durable adhesion cha

1994-07-08

1996-09-17

Lund, Valerie A.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 71, B41J 205, B41J 203

Patent

active

055573088

ABSTRACT:
The ink jet print head has a sandwich structure of a top plate, a bottom plate, and a dry film photoresist intermediate layer that defines liquid pathways and discharge orifices. The photoresist layer contains a phosphorus compound having substituted or unsubstituted alkyl or aryl groups having 6 to 10 carbons. The ink jet print head photoresist layers containing these phosphorus compounds exhibit durable bonds to the top and bottom plates of the print head and excellent ink resistance.

REFERENCES:
patent: 4221646 (1980-09-01), Finelli et al.
patent: 4609427 (1986-09-01), Inamato et al.
patent: 4937172 (1990-06-01), Gervay
patent: 4968582 (1990-11-01), Tranjan et al.
patent: 5073462 (1991-12-01), Gervay
patent: 5288589 (1994-02-01), McKeever et al.

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