Browse Prior Art Database

Air Jet Sheet Separator

IP.com Disclosure Number: IPCOM000086011D
Original Publication Date: 1976-Jul-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Manning, DF: AUTHOR [+2]

Abstract

The feeding of sheets from a stack is accomplished by directing a plurality of positive pressure air jets along the surface of the topmost sheet to produce a low pressure above the sheet. This lifts the top sheet's leading edge which can then be pinched against a rotating member for withdrawal from the stack.

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Air Jet Sheet Separator

The feeding of sheets from a stack is accomplished by directing a plurality of positive pressure air jets along the surface of the topmost sheet to produce a low pressure above the sheet. This lifts the top sheet's leading edge which can then be pinched against a rotating member for withdrawal from the stack.

Referring to the figure, sheets 1 in a stack are fed seriatim to the left by directing jets of air from nozzles 2 along the surface of the stack in the direction of feeding. The air jets create a low pressure above the topmost sheet 1, lifting the leading edge from the stack and moving it upward toward continuously rotating feed roll 3. Solenoid 4 is then operated to move pinch roll 5 toward the surface of feed roll 3 about pivot 6 and against return spring 7.

Pinch roll 5 holds the leading edge of top sheet 1 against the surface of rotating feed roll 3 to withdraw the sheet from the stack and feed it into a transport mechanism, not shown. The energization of solenoid 4 is controllable to determine the feed rate of the succession of sheets.

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