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DRUM ARCHITECTURE USING SCANNING PARTIAL WIDTH ARRAY FOR PLAIN PAPER COLOR PRINTER

IP.com Disclosure Number: IPCOM000026517D
Original Publication Date: 1992-Aug-31
Included in the Prior Art Database: 2004-Apr-06
Document File: 2 page(s) / 116K

Publishing Venue

Xerox Disclosure Journal

Abstract

A multiple rotation drum architecture for printing color or black on plain paper is disclosed. Some problems encountered with color thermal ink jet printing on plain paper include: inks running together and mixing on paper causing rough edges, feathering, color fidelity and color saturation problems; and high ink fluid coverage (150%) causing mechanical distortion of paper called cockle and curl. Cockle and curl that occurs during printing may be as large as 0.20 inches causing paper to hit printheads typically 0.02 to 0.04 inches from the paper and reducing image quality.

This text was extracted from a PDF file.
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XEROX DISCLOSURE JOURNAL

DRUM ARCHITECTURE USING Proposed Classification SCANNING PARTIAL WIDTH U.S. C1.346/140B ARRAY FOR PLAIN PAPER COLOR
PRINTER
Joseph J. Daniele
William R. Burger
Bruce J. Parks

Int. C1. GOlD 15/18

I I

I

78

/

12

20

10

74

72

22

FIG. I

78

28

FIG. 2

XEROX DISCLOSURE JOURNAL - Vol. 17, No. 4 July/August 1992 211

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

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DRUM ARCHITECTURE USING SCANNING PARTIAL WIDTH ARRAY FOR PLAIN PAPER COLOR PRINTER (Cont'd)

A multiple rotation drum architecture for printing color or black on plain paper is disclosed. Some problems encountered with color thermal ink jet printing on plain paper include: inks running together and mixing on paper causing rough edges, feathering, color fidelity and color saturation problems; and high ink fluid coverage (150%) causing mechanical distortion of paper called cockle and curl. Cockle and curl that occurs during printing may be as large as 0.20 inches causing paper to hit printheads typically 0.02 to 0.04 inches from the paper and reducing image quality.

Figures 1 and 2 show a top view and side view, respectively, of a multiple rotation drum architecture. With reference to Figures 1 and 2, a printhead 10 consists of a partial width array (PWA) aligned along drum axis 14. The PWA printhead 10, either collinear or staggered, steps across the drum 12 in unit multiples of the PWA chip length so that strips of cyan, magenta, yellow and black are printed around the drum 12. Thus, the length of the PWA printhead 10 determines the print-rate. The drum 12 makes a number of rotations to obtain a full page of color or black pri...