Browse Prior Art Database

BACK TO BACK COLINEAR ARCHITECTURE

IP.com Disclosure Number: IPCOM000027088D
Original Publication Date: 1995-Apr-30
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 92K

Publishing Venue

Xerox Disclosure Journal

Abstract

In operation, high power, full width printbars typically undergo a thermal excursion that approaches a level almost 25 degrees higher than norrnal room temperature. Thus, there is a warping problem that causes a misplacement of marks on a sheet of paper.

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XEROX DISCLOSURE JOURNAL

BACK TO BACK COLINEAR ARCHITECTURE
Mark A. Cellura

Proposed Classification

U.S. C1.346/140R Int. C1. Gold 15/18

20 fl>

f-"

20 FIG. 1

XEROX DISCLOSURE JOURNAL - Vol. 20, No. 2 MarchIApril 1995 133

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BACK TO BACK COLINEAR ARCHITECTURE (Cont'd)

In operation, high power, full width printbars typically undergo a thermal excursion that approaches a level almost 25 degrees higher than norrnal room temperature. Thus, there is a warping problem that causes a misplacement of marks on a sheet of paper.

It is desirable to have a printbar package as thin as possible so as to allow for multiple printbar stacking in color applications. However, inherent to the printbar's thin architecture is the susceptibility to bending, due both to simple mechanical forces and to thermally induced forces.

In order to preserve the thin architecture of a printbar package and to increase the flexural strength, it is proposed that two colinear thermal ink jet printbars be mounted back to back. Referring to the Figure, there is shown a bottom view of a back to back architecture 10 comprising a pair of printbars 20 mechanically coupled by a pair of pins 22 located at opposite ends of the assembly.

The advantages of a back to back colinear architecture include an enhanced structural support, a thermal stress averaging effect, and the preservation of a small print zone. If one printbar is printing, it experienc...