Browse Prior Art Database

Document Card Reader

IP.com Disclosure Number: IPCOM000081675D
Original Publication Date: 1974-Jul-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 3 page(s) / 52K

Publishing Venue

IBM

Related People

Meyerhofer, WL: AUTHOR

Abstract

This reader utilizes a pair of document feed devices 2A and 2B of the type disclosed in U. S. Patent 3,747,921 for feeding a document card 1 across a read head 10, with the devices 2 being so disposed with respect to a registration rail 5 that devices 2A and 2B maintain the document card 1 in contact with rail 5 as card 1 is being read.

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Document Card Reader

This reader utilizes a pair of document feed devices 2A and 2B of the type disclosed in U. S. Patent 3,747,921 for feeding a document card 1 across a read head 10, with the devices 2 being so disposed with respect to a registration rail 5 that devices 2A and 2B maintain the document card 1 in contact with rail 5 as card 1 is being read.

Card 1 is a standard 80-column document card having punched openings 1b through it and travels in direction A across platform 12. Backup rolls 14 and 16 have their upper peripheral surfaces at the same level as the top surface of platform 12, and the tips 2a of the devices 2A and 2B bear against rolls 14 and 16. An emitter roll 6 has a nip with a pressure roll 7 in the vicinity of read head In and rail 5, and an emitter 18 is driven by roll 6.

As viewed in plan, devices 2A and 2B have their center lines 2b extending at an angle a with respect to the center line la of the document card 1 travelling in direction A; and, viewed in elevation, feed devices 2A and 2B have their center lines 2c extending at an acute angle to and extending upstream over platform 12. Read head 10 is located slightly downstream (in direction A) with respect to the centers of rolls 6 and 7.

In operation, card 1 is manually inserted into the machine over platform 12 between the tip 2a of the device 2A and pressure roll 14. The tips 2a of feed devices 2A and 2B, which are supported by rolls 14 and 16, oscillate in an elliptical pattern 20 at the rate of 120 hz. The elliptical motion of tip 2a of device 2A causes the document card 1 to be moved in the direction A, because of the acute angle at which device 2A is disposed with respect to platform 12. The movement of card 1 continues until card 1 passes between rolls 6 and 7 and is over read head 10, by means of which punched holes 1b are read. As card 1 continues its movement, card 1 passes between...