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Browse Prior Art Database

Positive Taper Drive

IP.com Disclosure Number: IPCOM000049526D
Original Publication Date: 1982-Jun-01
Included in the Prior Art Database: 2005-Feb-09
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Bach, PS: AUTHOR

Abstract

Shown above is a driven member 10 and a driving member 12 with tapered keys 14 and 16 for driving connection. The driving key 16 is spring mounted to the driving member 12 so that the tapered faces 18 of driving key 16 will fit flatly against the tapered faces 20 of driven key 14.

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Positive Taper Drive

Shown above is a driven member 10 and a driving member 12 with tapered keys 14 and 16 for driving connection. The driving key 16 is spring mounted to the driving member 12 so that the tapered faces 18 of driving key 16 will fit flatly against the tapered faces 20 of driven key 14.

In operation, driven member 10 would typically be the end cap of a photoconductive drum in a copier. The drum is mounted on a rotating shaft at the opposite end of the drum from the driven member 10 end cap. The alignment between the center axis of the drum and the center axis of the driving member is normally a little skewed. The keys 14 and 16, because of this skew, do not mount with their faces 18 and 20 flush if key 16 is not spring mounted on driving member 12.

This condition of not having faces 18 and 20 flush results in image registration variations on a photoconductive drum carrying more than one image. The image registration variation takes place at the leading edge of the image printed on the copy. This variation is most visible on sequential multiple copies of an original and will grow with the wearing of the key contact points. The floating of key 16 eliminates this misalignment and the point to point contact of the opposing keys.

As shown above, key 16 is mounted freely about post 22 on springs 24. Although only one spring is shown, each of the posts 22 has an associated spring. When the driving key 16 is pressed down over posts 22, spring clips 26 (one...