Browse Prior Art Database

LOW COST AUTODUPLEX COPIER

IP.com Disclosure Number: IPCOM000025439D
Original Publication Date: 1985-Jun-30
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 92K

Publishing Venue

Xerox Disclosure Journal

Abstract

Figure 1 shows a duplex copier in which the usual dedicated duplex tray has been replaced by a tri-roll inverter 2. The copy sheet input tray 4 has a sheet extractor 6 associated with it. For simplex copying, the copy sheet passes in succession diverter 8, photoreceptor 10, fuser 12, the lower nip of the inverter 2 and the feed rolls 16, before landing in catch tray 14.

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XEROX DISCLOSURE JOURNAL

LOW COST AUTODUPLEX COPIER Proposed Ian G. Brown Classification

U.S. CI. 355/14R Int. CI. G03g 15/00

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     FIG 2
241

I 20

26

22'

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Volume 10 Number 3 May/June 1985

147

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

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LOW COST AUTODUPLEX COPIER (Cont'd)

Figure 1 shows a duplex copier in which the usual dedicated duplex tray has been replaced by a tri-roll inverter 2. The copy sheet input tray 4 has a sheet extractor 6 associated with it.

For simplex copying, the copy sheet passes in succession diverter 8, photoreceptor 10, fuser 12, the lower nip of the inverter 2 and the feed rolls 16, before landing in catch tray 14.

For duplex copying, the copy sheet follows the same path as far as the feed rolls 16, thus having an image produced on side 1 thereof. The feed rolls 16 are reversed after the trail edge of the sheet has left the lower nip of the inverter. This causes the former trail edge to become the lead edge and enter the upper nip, from which the sheet passes to the photoreceptor, where the respective image is placed on its side 2, resulting in the formation of a duplex copy.

To copy documents in the post-collation mode, i.e., by means of a semi-automatic document handler (SADH), the document handler shown in Figure 2 is used, which can transport two documents sequentially across an optical slit for as many copies as are needed.

Document 1 is fed from the input tray 20 into the SADH and transported across the imaging station 22 by contact with a driven belt 24. The copy sheet carrying the image of document 1 is fused, inverted an...