Browse Prior Art Database

INK MANIFOLD HAVING IMPROVED SEAL

IP.com Disclosure Number: IPCOM000026857D
Original Publication Date: 1994-Feb-28
Included in the Prior Art Database: 2004-Apr-06
Document File: 2 page(s) / 110K

Publishing Venue

Xerox Disclosure Journal

Abstract

Generally, this disclosure proposes to use a knife-edge or raised feature of appropriate geometry, either as an integral part or as an adhesive transfer tool, on the inlet manifold of a thermal ink jet device. The intent thereof being to enable the application of sealing adhesive by dipping into a pool of adhesive, ensuring that the adhesive is correctly placed where needed.

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XEROX DISCLOSURE JOURNAL

INK MANIFOLD HAVING IMPROVED SEAL Robert P. Altavela
Donald J. Drake

Proposed Classification
U.S. C1.346/140R Int. C1. B41j 2/155

FIG. 2A F 2o

FIG. 2B

14

FIG. 2C

G

FIG. IA f lo

G

FIG. 7B f lo

FIG. IC

f lo

f lo

14

14

XEROX DISCLOSURE JOURNAL - Vol. 19, No. 1 JanuaryFebruary 1994 25

[This page contains 1 picture or other non-text object]

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INK MANIFOLD HAVING IMPROVED SEAL(Cont'd)

Generally, this disclosure proposes to use a knife-edge or raised feature of appropriate geometry, either as an integral part or as an adhesive transfer tool, on the inlet manifold of a thermal ink jet device. The intent thereof being to enable the application of sealing adhesive by dipping into a pool of adhesive, ensuring that the adhesive is correctly placed where needed.

As illustrated in the figures, this invention relates to the assembly of an ink manifold 10 to a printhead die 12 after having been mounted on a printed wiring board (not shown) where the printed wiring board was mounted on a heat sinking structural substrate (not shown). Typically, a thin layer of gasket material, preferably a four mil thick RTV@ (General Electric Co.) seal is applied to the die inlet by screen printing. Unfortunately, the pot life of gasket materials like RTV@ are short-lived, about 5 to 10 minutes, so the screen must be cleaned frequently. Moreover, time to obtain precise alignment between the manifold and the printhead die is short after the seal has been screened onto the die.

In contrast, the present disclosure focuses on the flexibility and automation that would be available if a knife edge of appropriate geometry is used as an integral par...