Browse Prior Art Database

Lens Drive

IP.com Disclosure Number: IPCOM000088779D
Original Publication Date: 1977-Aug-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Buddington, DL: AUTHOR [+2]

Abstract

This lens drive is for use in a moving lens copier, and provides a positive lever force to scan the lens in one direction as a clock spring is wound. The spring's force thereafter causes the lens to return to its starting position during subsequent rescan movement.

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Lens Drive

This lens drive is for use in a moving lens copier, and provides a positive lever force to scan the lens in one direction as a clock spring is wound. The spring's force thereafter causes the lens to return to its starting position during subsequent rescan movement.

Bearing block 10 is connected to a movable, reciprocating lens carriage 11. Block 10 includes a roller 12 cooperating with a reciprocating input force lever 13. Lever 13 moves in direction 15 during scan, and returns in direction 14 during rescan.

Cable 16 is attached to block 10 at pin 25. Cable 16 passes over a finger 17 which forces cable 16 to align with the center of mass of carriage 11.

The other end of cable 16 attaches to pulley 18. This pulley is in turn attached to clock spring 19. As the pulley rotates about axis 20, during rescan movement 14, clock spring 19 is wound. Subsequently, as lever 13 returns during scan movement 15, the spring rewinds cable 16 on pulley 18, and roller 12 is continuously maintained against lever 13.

As shown in Fig. 2, the pulley end of cable 16 terminates in a ball connector
21.

In order to couple the cable to the pulley, connector 21 is first inserted through pulley opening 22, as shown in position A.

The cable is then moved radially outward, along slot 23, to bring the ball connector into alignment with detent 24, as shown in position B.

Detent 24 extends approximately one-half way through the pulley's thickness. The cable is now pulled taut to seat t...