Browse Prior Art Database

Developer Unit Chain Drive

IP.com Disclosure Number: IPCOM000081990D
Original Publication Date: 1974-Sep-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 54K

Publishing Venue

IBM

Related People

Bellamy, RL: AUTHOR [+4]

Abstract

A chain drive is employed with a developer unit and incorporates a chain stripper, which insures disengagement of the chain from the drive sprocket when the developer unit is placed in an inoperable position. The chain stripper is aligned by a fixture to insure proper positioning upon replacement thereof.

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Developer Unit Chain Drive

A chain drive is employed with a developer unit and incorporates a chain stripper, which insures disengagement of the chain from the drive sprocket when the developer unit is placed in an inoperable position. The chain stripper is aligned by a fixture to insure proper positioning upon replacement thereof.

The chain stripper 10 is attached to the side plate 11 of the developer unit. Fixturing positions the fingers 12 so that a small clearance is maintained to the chain, sprocket teeth and sprocket hub when the developer is in its run position. As the developer is rotated downward about developer pivot 13, the fingers 12 strip the chain from the drive sprocket 14 and hold the chain in a position such that the sprocket can reengage the chain as the developer is rotated up to its run position.

The stripper aligner 15 is positioned so as to contact chain stripper 10 along its surfaces 16 to insure proper repositioning thereof. The stripper 10 thus serves to insure that the chain is properly disengaged from its drive sprocket 14 when the developer unit is placed in a servicing position, and further serves to limit the amount of chain take-up by the spring loaded idler 17 when the drive sprocket 14 is disengaged.

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