Browse Prior Art Database

Photoconductor Drum Drive Coupling

IP.com Disclosure Number: IPCOM000044798D
Original Publication Date: 1984-Sep-01
Included in the Prior Art Database: 2005-Feb-06
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Ellis, RE: AUTHOR

Abstract

An adjustable-width drive key allows a xerographic photoconductor drum to be driven about its elongated axis of rotation, without the occurrence of backlash.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 95% of the total text.

Page 1 of 1

Photoconductor Drum Drive Coupling

An adjustable-width drive key allows a xerographic photoconductor drum to be driven about its elongated axis of rotation, without the occurrence of backlash.

Fig. l shows the front view of this drive key l0, and the axis ll about which the drive key rotates counterclockwise. The drive key is formed by two inclined surfaces l2 and l3, of which surface l2 is the drive surface and surface l3 is the trailing surface.

Fig. 2 is a side view, showing drive shaft l4 for drive key l0, and showing that the trailing face comprises two self-locking setscrews l5 and l6.

Fig. 3 shows the two faces l2 and l3 in a common plane, merely for purposes of explanation. This figure shows that faces l2 and l3 are formed at equal but opposite angles to axis ll. This figure also shows a portion of the photoconductor drum l7 to be driven by drive key l0. This drum includes two non-adjustable inclined surfaces l8 and l9 which engage faces l2 and l3 when the drum is moved along axis ll, to bring these drum surfaces into contact with the drive key faces. If parts are in-tolerance, surfaces 20 and 2l do not engage. However, with wear and the like, it is possible that the circumferential spacing of faces l2 and l3 will no longer be slightly less than the circumferential spacing of surfaces l9 and 20, leading to backlash in the driving interface to drum l7. If this occurs, it is merely necessary to adjust setscrews l5 and l6. More specifically, the set screws a...