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METHOD FOR FOLDING SIGNATURE BOOKLETS

IP.com Disclosure Number: IPCOM000027149D
Original Publication Date: 1995-Jun-30
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 86K

Publishing Venue

Xerox Disclosure Journal

Abstract

The present proposal addresses a method for folding signature booklets in an electrophotographic system. It significantly improves the folding process by reducing or even eliminating set skew and sheet scuffing. As illustrated by the figure, a document set 20 is registered in a flat state on a complier deck 30. The document set 20 may be comprised of either a loose stack of copy sheets, a stitched set of copy sheets, or a single copy sheet. Complier deck 30 is located beneath a first pair of fold rolls 22 and a second pair of fold rolls 24. At the start of the folding process, both the first pair of fold rolls 22 and the second pair of fold rolls 24 are at rest. They are retracted up and away from the document set 20 (shown by a plurality dotted circles).

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XEROX DISCLOSURE JOURNAL

METHOD FOR FOLDING SIGNATURE BOOKLETS Paul N. Richards

Proposed Classification
U.S. Cl.355/308 Int. Cl. G03g 21/00

XEROX DISCLOSURE JOURNAL - Vol. 20, No. 3 May/June 1995 265

[This page contains 1 picture or other non-text object]

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METHOD FOR FOLDING SIGNATURE BOOKLETS (Cont'd)

The present proposal addresses a method for folding signature booklets in an electrophotographic system. It significantly improves the folding process by reducing or even eliminating set skew and sheet scuffing. As illustrated by the figure, a document set 20 is registered in a flat state on a complier deck 30. The document set 20 may be comprised of either a loose stack of copy sheets, a stitched set of copy sheets, or a single copy sheet. Complier deck 30 is located beneath a first pair of fold rolls 22 and a second pair of fold rolls 24. At the start of the folding process, both the first pair of fold rolls 22 and the second pair of fold rolls 24 are at rest. They are retracted up and away from the document set 20 (shown by a plurality dotted circles).

Before folding takes place it is critical to eliminate any potential for skew to occur in the fold transition. Skew occurs in the area between the underside of fold rolls pairs 22 and 24 and the document set 20.

The pairs of fold rolls 22 and 24 are driven downward against the document set
20. Fold rolls pairs 22 and 24 do not rotate as they move downward in the direction of arrows 32 and 34. When fold...