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THERMAL INK JET PRINT HEAD CARRIAGE WITH INTEGRAL LIQUID COOLING CAPABILITIES

IP.com Disclosure Number: IPCOM000027281D
Original Publication Date: 1996-Feb-29
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 94K

Publishing Venue

Xerox Disclosure Journal

Abstract

A Thermal Ink Jet (TIJ) print head generates unwanted heat which must be absorbed or dissipated so as to allow the print head to function properly. Proposed is a heat sink camage having a fluid cooling channel therein. The carriage and cooling channel provide adequate cooling to the print head without the need for forced air convection that can jeopardize image quality. The design provides efficient utilization of physical space.

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XEROX DISCLOSURE JOURNAL

THERMAL INK JET PRINT HEAD CARRIAGE WITH INTEGRAL U.S. C1.346114OR LIQUID COOLING CAPABILITIES
Jeffery D. Barner
Michael J. Diehl
Glenn Herbert

Proposed Classification

Int. C1. B41j 02/05

FIG. 2

XEROX DISCLOSURE JOURNAL - Vol. 21, No. 1 Januarynebruary 1996 33

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THERMAL INK JET PRINT HEAD CARRIAGE WITH INTEGRAL LIQUID COOLING C APABILITIE S(Cont'd)

A Thermal Ink Jet (TIJ) print head generates unwanted heat which must be absorbed or dissipated so as to allow the print head to function properly. Proposed is a heat sink camage having a fluid cooling channel therein. The carriage and cooling channel provide adequate cooling to the print head without the need for forced air convection that can jeopardize image quality. The design provides efficient utilization of physical space.

Figure 1 illustrates the proposed carriage 10 with a top plate and TIJ print head removed. Carriage 10 is preferably formed from aluminum and includes channel 20 through which a fluid coolant is circulated.

Figure 2 shows carriage 10 having a top plate 12 mounted thereon for holding TIJ print head 14, inlet 16, and outlet 18 thereto. Coolant is ported to carriage 10 via tubing (not shown) connected to inlet 16. The coolant is circulated through channel 20 (Figure 1) underneath the heat generating area of print head 14. It is pumped out of channel 20 to a sump (not shown) and/or a liquid- to-air heat exch...