Browse Prior Art Database

CORROSION-RESISTANT HEAT SLNKING SUBSTRATE FOR THERMAL INK JET PRINTHEADS

IP.com Disclosure Number: IPCOM000027575D
Original Publication Date: 1997-Dec-31
Included in the Prior Art Database: 2004-Apr-08
Document File: 2 page(s) / 80K

Publishing Venue

Xerox Disclosure Journal

Abstract

Proposed is a heat sinking substrate for thermal ink jet printheads which replaces a nickel plated zinc layer that normally corrodes. As shown in the accompanying figure, the 70 76 XEROX DISCLOSURE JOURNAL - Vol. 22, No. 6 NovemberDecember 1997 29 1

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

XEROX DISCLOSURE JOURNAL

CORROSION-RESISTANT HEAT SLNKING Proposed Classification SUBSTRATE FOR THERMAL INK JET
PRINTHEADS
Int. C1. B41j 02/15 Gary A. Kneezel
Peter J. John
Robert P. Altavela

U. S. C1.347/020

70 76

-

Proposed is a heat sinking substrate for thermal ink jet printheads which replaces a nickel plated zinc layer that normally corrodes. As shown in the accompanying figure, the

XEROX DISCLOSURE JOURNAL - Vol. 22, No. 6 NovemberDecember 1997 29 1

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

Page 2 of 2

CORROSION-RESISTANT HEAT SINKING SUBSTRATE FOR THERMAL INK JET PRINTHEADS (CONT'D)

proposed substrate 10 comprises an injection molded plastic having an insert layer 12 to provide required heat sinking. Insert layer 12 must have high thermal conductivity and may be made of metal, graphite, or a ceramic such as aluminum nitride. The surface of insert 12 sets back from the front of substrate 10 by a dimension V to protect the insert from contact with ink. As a result, a bonded die assembly (not shown) overhangs the insert. Substrate 10 has complex geometrical shapes such as die bond platform 13, and a plurality of small aspect apertures 14 and 16. These shapes fabricate easily in injection molding, but are not compatible with forming techniques such as stamping.

DP5653

292 XEROX DISCLOSURE JOURNAL, - Vol. 22, No. 6 NovembedDecember 1997

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