Browse Prior Art Database

Single Sheet Paper Supply for Reproduction Apparatus With Document Length Sensor

IP.com Disclosure Number: IPCOM000086199D
Original Publication Date: 1976-Aug-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 48K

Publishing Venue

IBM

Related People

Froula, JD: AUTHOR

Abstract

Shown is a paper length sensing means in a bypass slot on a copier machine.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 84% of the total text.

Page 1 of 2

Single Sheet Paper Supply for Reproduction Apparatus With Document Length Sensor

Shown is a paper length sensing means in a bypass slot on a copier machine.

Bypass slots are used to insert a special type of copy paper without disturbing the copy paper supply in the paper bin 12. Examples might be the need to insert an offset master, a foil or even a 14-inch copy paper when 11-inch paper is in the bin. It may be desirable to sense the length of the inserted copy paper for various functions, such as to match the leading edges of copy paper and image.

The figure shows an example or bypass slot on a copier machine.

A copy paper 1 is hand-fed into the slot entrance 2 to drive rollers 4, 5 and 6 which move the paper 1 down the guide 7 to a position adjacent to drive roller 10. When the correct time in the machines cycle to feed copy paper arrives, drive rollers 5, 6 and 10 cooperate to send the paper 1 into the remainder of the machine, thus bypassing the normal paper pick and feed out of primary paper supply bin 12.

Switch 3 senses the leading edge of copy paper 1 thus initiating rotation of pinch drive roller 4 to feed the copy paper 1 for a fixed time interval at a known velocity, after which the drive is stopped briefly. A magnet 8 can be used to stop the drive by actuating a controlled spring clutch, not shown, on shaft 9. No further motion need occur until a signal is given from the "print" button or a semiautomatic document feed operation, at which time the norm...