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DEVELOPER MOUNT

IP.com Disclosure Number: IPCOM000026073D
Original Publication Date: 1990-Feb-28
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 62K

Publishing Venue

Xerox Disclosure Journal

Abstract

An electrophotographic printing machine has a developer unit for developing an electrostatic latent image recorded on a photoconductive belt. The photoconductive belt is partially wrapped about the developer roller. It is desirable to mount the developer unit in the printing machine in such a way as to minimize the effect of tolerances on the wrap angle of the photoconductive belt about the developer roll. This may be accomplished by using a pair of bearing/mounting block interfaces, i. e. one inboard and one outbboard of the photocondcutive belt. Each bearing block interface has an angle which is equal to the desired wrap angle about the developer roll. Each bearing block is positioned so that a surface is against each of the backing rolls with the photoconductive belt being interposed therebetween. Each side of each bearing block has an edge which is parallel to and co-linear with the back edge of the photoconductive belt. The edge of the vbearing block is parallel to the deswired angle, but offset by the thickness of the photoconductive belt. The surfaces of the bearing block intersect one another at the mid-point between the backing rolls. The supplement of the included angle between the surfaces of the bearing block is the required wrap angle.

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XEROX DISCLOSURE JOURNAL

DEVELOPER MOUNT

Michael S. Doery Steven C. Hart

Proposed Classification

U.S. C1.355/200 Int. C1. G03g 15/00

An electrophotographic printing machine has a developer unit for developing an electrostatic latent image recorded on a photoconductive belt. The photoconductive belt is partially wrapped about the developer roller. It is desirable to mount the developer unit in the printing machine in such a way as to minimize the effect of tolerances on the wrap angle of the photoconductive belt about the developer roll. This may be accomplished by using a pair of bearing/mounting block interfaces, i. e. one inboard and one outbboard of the photocondcutive belt. Each bearing block interface has an angle which is equal to the desired wrap angle about the developer roll. Each bearing block is positioned so that a surface is against each of the backing rolls with the photoconductive belt being interposed therebetween. Each side of each bearing block has an edge which is parallel to and co-linear with the back edge of the photoconductive belt. The edge of the vbearing block is parallel to the deswired angle, but offset by the thickness of the photoconductive belt. The surfaces of the bearing block intersect one another at the mid-point between the backing rolls. The supplement of the included angle between the surfaces of the bearing block is the required wrap angle.

XEROX DISCLOSURE JOURNAL - Vol. 15, No. 1 January/February 1990 43

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