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SHEET SEPARATOR

IP.com Disclosure Number: IPCOM000024054D
Original Publication Date: 1979-Aug-31
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 264K

Publishing Venue

Xerox Disclosure Journal

Abstract

A sheet-separatingdevice for separating and feeding sheets individually from the bottom of a stack of sheets comprising a sheet support plate 2 for supporting a stack of sheets, an air plenum 3, a sheet feeding and separating belt 4, a feed gate 5, and take-away rolls 6. The sheet support plate 2 has a plurality of fine holes 7 therein, and the plate supports a stack of sheets 8. The air plenum 3 is connected to a source of pressurized air 9. Passage of air from the plenum through the fine holes produces jets of air adapted for penetration through the bottom sheet of the stack. After passing through the bottom sheet in the stack, the air jets are diffused to provide an air cushion between the bottom sheet and the remainder of

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XEROX DISCLOSURE JOURNAL

SHEET SEPARATOR Proposed Classification Klaus K. Stange U.S. Cl. 27 1/166

[nt. Cl. B65h 1/24

A sheet~-separatingdevice for separating and feeding sheets individually from the

bottom of a stack of sheets comprising a sheet support plate 2 for supporting a stack of sheets, an air plenum 3, a sheet feeding and separating belt 4, a feed gate 5, and take-away rolls 6. The sheet support plate 2 has a plurality of fine holes 7 therein, and the plate supports a stack of sheets 8. The air plenum 3 is connected to a source of pressurized air 9. Passage of air from the plenum through the fine holes produces jets of air adapted for penetration through the bottom sheet of the stack. After passing through the bottom sheet in the stack, the air jets are diffused to provide an air cushion between the bottom sheet and the remainder of

the stack above the bottom sheet. The sheet feeding and separating belt 4 is mounted on rollers 10 for rotation in the direction indicated by the arrow. The sheet feeding and separating belt 4 is provided with a slight upward pressure against the bottom sheet in the stack. The feed gate 5 is biased downwardly into contact with belt 4 by suitable means (not shown). The biasing force is in the order of 0,4 to 0.5 pound. Surface 11 of feed gate 5 will act to prevent more than one sheet from being separated and fed. At the lower end of surface 11 feed gate 5 has a slight bevel to facilitate the entry of the bottom sheet of the s...