Browse Prior Art Database

SONIC ENERGY FOR PAPER SEPARATION

IP.com Disclosure Number: IPCOM000023805D
Original Publication Date: 1979-Feb-28
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 178K

Publishing Venue

Xerox Disclosure Journal

Abstract

Separation of individual sheets of paper from a paper stack in a paper feeder is difficult due to the inability to break contact between the sheet to be fed and the adjacent sheets. The contact forces/mechanisms involved can be the result of physical surface condition of the paper (surface roughness, moisture content, static, etc.), cut edges of the paper being ragged or multicut sheets that have intermixed fibers at the edges and the weight of the stack for a bottom feeder.

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XEROX DISCLOSURE JOURNAL

SONIC ENERGY FOR PAPER Proposed Classification SEPARATION U.S. Ci. 271/8
JOrseph Calfiers bit. Ci. 66Th 7/00

Separation of individual sheets of paper from a paper stack in a paper feeder is difficult due to the inability to break contact between the sheet to be fed and the adjacent sheets. The contact forces/mechanisms involved can be the result of physical surface condition of the paper (surface roughness, moisture content, static, etc.), cut edges of the paper being ragged or multicut sheets that have intermixed fibers at the edges and the weight of the stack for a bottom feeder.

These adhesive and cohesive attachment forces/mechanisms may be broken by the use of sonic, subsonic or supersonic energy applied to the stack. Through selection of energy levels and frequency, it is possible to cause separation due to the interaction of acceleration and momentum of adjacent sheets.

Volume 4 Number 1 January/February 1979 53

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