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PRECOLLATION DOCUMENT HANDLER

IP.com Disclosure Number: IPCOM000024932D
Original Publication Date: 1982-Dec-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 4 page(s) / 152K

Publishing Venue

Xerox Disclosure Journal

Abstract

Two embodiments of document handlers are shown in the drawings for recirculating either simplex or duplex original document sheets for precollation copying in an electrophotographic printing machine. Referring to Figure 1, a stack of simplex originals are placed face down in document tray 10. Duplex originals are placed in document tray 10 with side one down. Document feeder 12 advances the bottommost document from tray 10, in the direction of arrow 18, under roller 16 between guides 20 and 22. Roller 24 advances the leading edge of the document exiting guides 20 and 22 into the nip defined by rollers 30 and 32. As the document exits roller 24, a fixed optical system directs light rays, indicated by arrow 28, onto successive incremental portions of the moving document. Light rays reflected from the document are directed through a lens to form a light image thereof which radiates the charged region of a photoconductive surface to form an electostatic latent image thereon. When the leading marginal region of a simplex document exits by rollers 26 and 28, it enters the nip defined by rollers 46 and 42. Roller 42 rotates in the direction of arrow 44 to advance the simplex document into IJ-shaped member 48. When the leading marginal region of a duplex document exits the nip defined by rollers 30 and 32, the leading marginal region of the document is secured to document drum 36. While rotating on document drum 36, the optical system directs light rays, as indicated by arrow 40, onto the other side of the document. The light rays reflected from the document are transmitted through a lens onto the charged photoconductive surface to form a latent image thereon. After being illuminated, the leading edge of the document is released and enters the nip between rollers 46 and 42. The duplex document, like the simplex document, enters U-shaped member 48.

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Page 1 of 4

(EROX DISCLOSURE JOURNAL

PRECOLLATION DOCUMENT HANDLER Joachim Guenther

Proposed Classification
U.S. C1. 271/186 Int. C1. B65h 29/00

FIG. I

Volume 7 Number 6 November/December 1982 365

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

Page 2 of 4

PRECOLLATION DOCUMENT HANDLER (Cont'd)

Two embodiments of document handlers are shown in the drawings for recirculating either simplex or duplex original document sheets for precollation copying in an electrophotographic printing machine. Referring to Figure 1, a stack of simplex originals are placed face down in document tray 10. Duplex originals are placed in document tray 10 with side one down. Document feeder 12 advances the bottommost document from tray 10, in the direction of arrow 18, under roller 16 between guides 20 and 22. Roller 24 advances the leading edge of the document exiting guides 20 and 22 into the nip defined by rollers 30 and 32. As the document exits roller 24, a fixed optical system directs light rays, indicated by arrow 28, onto successive incremental portions of the moving document. Light rays reflected from the document are directed through a lens to form a light image thereof which radiates the charged region of a photoconductive surface to form an electostatic latent image thereon. When the leading marginal region of a simplex document exits by rollers 26 and 28, it enters the nip defined by rollers 46 and 42. Roller 42 rotates in the direction of arrow 44 to advance the simplex document into IJ- shaped member 48. When the leading marginal region of a duplex document exits the nip defined by rollers 30 and 32, the leading marginal region of the document is secured to document drum 36. While rotating on document drum 36, the optical system directs light rays, as indicated by arrow 40, onto the other side of the document. The light rays reflected from the document are transmitted through a lens onto the charged photoconductive surface to form a latent image thereon. After being illuminated, the leading edge of the document is released and enters the nip between rollers 46 and 42. The duplex document, like the simplex document, enters U-shaped member 48. When the leading edge of the document engages the closed end of U-shaped member 48, the trailing edge is lifted in an upwardly direction by roller 46, so as to be positioned in the nip of rollers 46 and
50. The document then passes over roller 24 and into the nip defined by rollers 52 and 56. Roller 52 rotates in the direction of arrow 54 to advance the document to the nip defined by rollers 62 and 58. Roller 58 rotates in the direction of arrow 60 to advance the document to the nip defined by rollers 66 and 64. Roller 66 rotates in the direction of arrow 68 to return the document to the top of the stack of documents in tray 10.

Turning now to Figure 2, a stack of simplex originals are placed fa...