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PHOTORECEPTOR FILM DISPENSING ROLLER

IP.com Disclosure Number: IPCOM000027859D
Original Publication Date: 2001-Apr-30
Included in the Prior Art Database: 2004-Apr-09
Document File: 4 page(s) / 227K

Publishing Venue

Xerox Disclosure Journal

Abstract

Referring to Figure 1, the electrophotographic printing machine shown employs a photoconductive belt 16, although photoreceptors in the form of a drum are also known and may be substituted therefor. The belt 16 has a photoconductive surface deposited on a conductive substrate. Belt 16 moves in the direction of arrow 18 to advance successive portions thereof sequentially through the various processing stations disposed about the path of movement thereof. Motor 70 rotates belt 16 to advance belt 16 in the direction of arrow 18. Belt 16 is coupled to motor 70 by suitable means such as a drive.

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 42% of the total text.

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XEROX DISCLOSURE JOURNAL

PHOTORECEPTOR FILM DISPENSING Proposed Classification ROLLER U. S. Cl. 399/096 Douglas A. Lundy
Robert W. Phelps
John W. Whipple
W. Bradford Willard

Int. C1. GO3g 15/00

'64 -

62

\

FIG. 7

Xerox Disclosure Journal - Vol. 25, No. 2 MarchlApril2001 91

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PHOTORECEPTOR FILM DISPENSING ROLLER (Cont'd)

76 78 I

84

FIG. 2

Referring to Figure 1, the electrophotographic printing machine shown employs a photoconductive belt 16, although photoreceptors in the form of a drum are also known and may be substituted therefor. The belt 16 has a photoconductive surface deposited on a conductive substrate. Belt 16 moves in the direction of arrow 18 to advance successive portions thereof sequentially through the various processing stations disposed about the path of movement thereof. Motor 70 rotates belt 16 to advance belt 16 in the direction of arrow 18. Belt 16 is coupled to motor 70 by suitable means such as a drive.

92 Xerox Disclosure Journal - Vol. 25, No. 2 MarcldApril2001

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PHOTORECEPTOR FILM DISPENSING ROLLER (Cont'd)

Initially successive portions of belt 16 pass through charging station A. At charging station A, a corona generating device, indicated generally by the reference numeral 30, charges the belt 16 to a selectively high uniform electrical potential, preferably negative. Any suitable control, well known in the art, may be employed for controlling the corona generating device 30.

A document to be reproduced is placed on a platen 22, located at imaging station B, where it is illuminated in known manner by a light source such as a tungsten halogen lamp 24. The document thus exposed is imaged onto the belt 16 by a system of mirrors (not shown). The optical image selectively discharges surface 28 of the belt 16 in an image configuration whereby an electrostatic latent image 32 of the original document is recorded on the belt 16 at the imaging station B.

At development station C, a magnetic development system or unit, indicated generally by the reference numeral 36 advances developer materials into contact with the electrostatic latent images. Preferably, the magnetic developer unit includes a magnetic developer roll mounted in a housing. Thus, developer unit 36 contains a developer roll 34. The roll 34 advances toner particles into contact with the latent image. Appropriate developer biasing is may be accomplished via power supply 42, electrically connected to developer unit 36.

The developer unit 36 develops the charged image areas of the photoconductive surface. This developer unit contains magnetic black toner, for example, particles 44 which are charged by the electrostatic field existing between the photoconductive surface and the electrically biased developer roll in the developer unit. Power supply 42 electrically biases the developer roll 34.

A sheet of support material 58 is m...