Browse Prior Art Database

Vacuum Drive Roll Transport

IP.com Disclosure Number: IPCOM000076800D
Original Publication Date: 1972-Apr-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 57K

Publishing Venue

IBM

Related People

Berreth, ME: AUTHOR [+2]

Abstract

Vacuum drive roll transport 5 conveys documents such as mail pieces oriented in a vertical position. The front face of the document or mail piece 10 in Figs. 1 and 2 is held by vacuum to drive rolls 15. Drive rolls 15 function to convey the documents in combination with the applied vacuum in chambers 16, 17, 18 and 19. Drive rolls 15 are formed with steps to permit the vacuum to pass from the chambers. The mail pieces, of course, seal against the vacuum chambers so as to be held in contact with the drive rolls. Chamber face plates 20, 21 and 22 have ribs which fit between the steps of drive rolls 15 to prevent flimsy mail pieces or documents from being pulled by the vacuum around the drive rolls. Drive rolls 15 are driven from main drive shaft 25 via a series of belts 26. Spring loaded idlers 30, Fig.

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Vacuum Drive Roll Transport

Vacuum drive roll transport 5 conveys documents such as mail pieces oriented in a vertical position. The front face of the document or mail piece 10 in Figs. 1 and 2 is held by vacuum to drive rolls 15. Drive rolls 15 function to convey the documents in combination with the applied vacuum in chambers 16, 17, 18 and 19. Drive rolls 15 are formed with steps to permit the vacuum to pass from the chambers. The mail pieces, of course, seal against the vacuum chambers so as to be held in contact with the drive rolls. Chamber face plates 20, 21 and 22 have ribs which fit between the steps of drive rolls 15 to prevent flimsy mail pieces or documents from being pulled by the vacuum around the drive rolls. Drive rolls 15 are driven from main drive shaft 25 via a series of belts
26. Spring loaded idlers 30, Fig. 2, provide the desired tension for belts 26.

This vacuum drive roll transport is particularly suitable for conveying mail pieces which are optically scanned. The front face of the mail pieces are placed so that registration is not affected by the thickness of the mail piece and, thus, the depth of field for the optical scanner system is substantially constant.

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