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Automatic Seal Lift and Film Advance Mechanism

IP.com Disclosure Number: IPCOM000081765D
Original Publication Date: 1974-Aug-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 53K

Publishing Venue

IBM

Related People

Berlier, RA: AUTHOR [+2]

Abstract

An automatic seal lift and advance mechanism is employed with a photoconductor drum having an internal supply of photoconductor material, which is unwound from a supply roll interior of the drum, emanates through a slot in the drum to be wrapped thereabout and returned through the slot to a take-up roll interior of the drum. A drum seal is employed adjacent the slot to tightly seal the interior of the drum, to prevent foreign matter from being inserted through the slot into the drum. The drum seal is automatically lifted away from the photoconductor material to prevent the marring thereof during an incrementing cycle, when a new photoconductor segment is deployed about the drum.

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Automatic Seal Lift and Film Advance Mechanism

An automatic seal lift and advance mechanism is employed with a photoconductor drum having an internal supply of photoconductor material, which is unwound from a supply roll interior of the drum, emanates through a slot in the drum to be wrapped thereabout and returned through the slot to a take-up roll interior of the drum. A drum seal is employed adjacent the slot to tightly seal the interior of the drum, to prevent foreign matter from being inserted through the slot into the drum. The drum seal is automatically lifted away from the photoconductor material to prevent the marring thereof during an incrementing cycle, when a new photoconductor segment is deployed about the drum.

Photoconductor 11 is advanced from supply-spool 13 about drum 14 to take- up spool 15 during a photoconductor advance operation. This operation is initiated when advance shaft 17 is prevented from rotating as the drum 14 continues rotation about the shaft, thereby halting motion of geneva drive pin 19. As the drum 14 rotates, geneva wheel 21 engages the stationary drive pin and rotates on its axis by 90 degrees.

Affixed to the geneva wheel 21 is the seal lift cam 23 and photoconductor conductor advance clutch cam 25. The seal lift cam 23, acting on the lifting link 27 and lifting shaft 29, causes the seal 31 to be lifted outward from drum 14 to allow the photoconductor 11 to thereafter move without contact being made between the photoconducto...