Browse Prior Art Database

SINGLE PASS INTERMEDIATE HIGHLIGHT COLOR ENGINE

IP.com Disclosure Number: IPCOM000026817D
Original Publication Date: 1993-Oct-31
Included in the Prior Art Database: 2004-Apr-06
Document File: 2 page(s) / 116K

Publishing Venue

Xerox Disclosure Journal

Abstract

A single pass intermediate highlight color xerographic print engine is disclosed and shown in Figure 1. Similar to conventional black only xerographic print engines, a charge retentive member in the form of a photoconductive belt 10 is mounted for movement past a charging station A, exposure station B, developer stations C, transfer station D and cleaning station F. Exposure station B and developer station C, however, differ from conventional xerographic engines by writing both black and highlight color simultaneously to a photoconductive belt 10 and a photoconductive drum 15 respectively.

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XEROX DISCLOSURE JOURNAL

SINGLE PASS INTERMEDIATE Proposed Classification HIGHLIGHT COLOR ENGINE U.S. C1.355/328
Lam F. Wong
Int. Van H. Kamath C1. G03g 15/01

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FIG. I

XEROX DISCLOSURE JOURNAL - Vol.18,No. 5 September/October 1993 533

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SINGLE PASS INTERMEDIATE HIGHLIGHT COLOR ENGINE

(Cont'd)

A single pass intermediate highlight color xerographic print engine is disclosed and shown in Figure 1. Similar to conventional black only xerographic print engines, a charge retentive member in the form of a photoconductive belt 10 is mounted for movement past a charging station A, exposure station B, developer stations C, transfer station D and cleaning station F. Exposure station B and developer station C, however, differ from conventional xerographic engines by writing both black and highlight color simultaneously to a photoconductive belt 10 and a photoconductive drum 15 respectively.

Initially successive portions of belt 10 moving in the direction of arrow 16 pass through charging station A. At charging station A, a corona discharge device 24, charges belt 10 to a selectively high uniform positive or negative potential. Similarly drum 15, rotating clockwise, charges using corona discharge device
25. Next, charged portions of the photoreceptor surface advance through exposure station B. For black only printing, uniformly charged photoreceptor 10 is exposed to a laser based scanning device 25 through beam splitter 40 and optoelectircal shutter 42 causing the charge retentive surface to be discharged in accordance wit...