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Browse Prior Art Database

Trailing Edge Paper Feeding Apparatus

IP.com Disclosure Number: IPCOM000089202D
Original Publication Date: 1977-Oct-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Hunt, RE: AUTHOR

Abstract

This article describes a paper feeding apparatus in which paper is placed in hopper 1, stacked to the left as shown in stack 2. Drive module 3 then rotates shaft 4 which, through drive belt 5, rotates separator wheel assembly 6.

This text was extracted from a PDF file.
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Trailing Edge Paper Feeding Apparatus

This article describes a paper feeding apparatus in which paper is placed in hopper 1, stacked to the left as shown in stack 2. Drive module 3 then rotates shaft 4 which, through drive belt 5, rotates separator wheel assembly 6.

Wheel 6 floats on the paper stack supported by pivot arm 7. As the wheel rotates, the top few sheets will shingle to the right. The top sheet 8 clears wheel 6 and is transported into gate wheel 9 by the second sheet 10. Aligner sensor 11 signals to the electronics that a sheet is in the gate. Solenoid 12 then picks and rotates rubber-tipped crank 13 down onto the second sheet 10. This stops all paper motion. The solenoid applies a normal load to the paper through rubber- tipped crank 13. Also, since the solenoid is mounted on arm 7, this normal load subtracts from the normal load of wheel 6. Since the shingling force is directly proportional to the normal load of the wheel, this driving force is eliminated or greatly reduced.

Next, gate roller 9 is rotated clockwise, and the paper is pinched between the roller 9 and backup roller 14, and driven out to the right. The second sheet is clamped by crank 13 so it cannot follow. As the trailing edge of the top sheet clears sensor 11, the solenoid is released, and wheel 6 drives the second sheet into the gate. The third sheet 15 is then clamped. Inclined plane 16 is used to guide paper into the gate as subsequent sheets are fed.

For long delays in feeding, sh...