Browse Prior Art Database

Axially Adjustable Drum Key

IP.com Disclosure Number: IPCOM000087037D
Original Publication Date: 1976-Dec-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Clark, WD: AUTHOR [+2]

Abstract

A mechanism for use in a copier providing for misalignment of a photoconductor drum relative to its drive shaft without utilizing self-aligning bearings, and, additionally, allowing for axial adjustment of other drive mechanisms, such as an optics drive, on the drum drive shaft.

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Axially Adjustable Drum Key

A mechanism for use in a copier providing for misalignment of a photoconductor drum relative to its drive shaft without utilizing self-aligning bearings, and, additionally, allowing for axial adjustment of other drive mechanisms, such as an optics drive, on the drum drive shaft.

Fig. 1 shows the drive shaft 10 with a threaded portion 11 upon which a threaded nut 12 is positioned to hold a drive member 13 which may be, for example, a gear or pulley, in place. The nut 12 is prevented from movement by a key 14 which has a pin member 15 insertable into holes drilled at intervals in the drive shaft 10. Thus the drive member which may be the optics drive, can be axially adjusted and securely held on the drum drive shaft.

Figs. 2 and 3 show a top and side view, respectively, of the relationship of the key 14, shaft 10 and drum 16. Fig. 4 shows an end view of the drum 16 showing the keyway 17 and the key 14. By providing an essentially line contact between the tapered faces of key 14 and the rounded keyway 17 (Fig. 2), provision is made for misalignment of the drum with the drive shaft 10. The mechanism also affords quick and easy removal and replacement of the drum.

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