Browse Prior Art Database

DUAL FUNCTION SHEET FEEDER

IP.com Disclosure Number: IPCOM000026965D
Original Publication Date: 1994-Aug-31
Included in the Prior Art Database: 2004-Apr-07
Document File: 4 page(s) / 291K

Publishing Venue

Xerox Disclosure Journal

Abstract

As disclosed herein, a dual mode system is provided for utilizing a common, shared sheet input feeding system for either stacks of original documents to be electronically imaged or stacks of special copy sheets to be fed for being printed.

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XEROX DISCLOSURE JOURNAL

DUAL FUNCTION SHEET FEEDER Classification Proposed John R. Yonovich U.S. C1.355/309

Int. C1. G03g 21/00

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DUAL FUNCTION SHEET FEEDER(Cont'd)

As disclosed herein, a dual mode system is provided for utilizing a common, shared sheet input feeding system for either stacks of original documents to be electronically imaged or stacks of special copy sheets to be fed for being printed.

As disclosed in the embodiment herein, this may be provided in a modular unit connecting with a digital printing engine to provide both an auxiliary optional copy sheet input source as well as an original document imager for inputting electronic images to that (or another, networked) printing engine. The disclosed system can simplify and reduce the costs of electronic printing systems, and can be used with a wide variety of different electronic printing engines, document feeders and electronic imaging systems, including networked systems.

The disclosed apparatus may be readily operated and controlled in a conventional manner with conventional control systems. It is well known in general and preferable to execute such control functions and logic with readily programmable software instructions for conventional microprocessors.

In the description herein the term "document" or "sheet" refers to a usually flimsy sheet of paper, plastic, or other such conventional individual image substrate, and not to microfilm or electronic images which are generally much easier to manipulate, unless so indicated. The "document" is the sheet (the original, which may be a or previous copy) to be copied onto a "copy sheet", which may be abbreviated as the "copy". A "simplex" document or copy sheet is one having its image and page number on only one side or face of the sheet, whereas a "duplex" document or copy sheet has "pages", and normally images, on both sides, i. e., each duplex document and copy is considered to have two opposing sides, faces, or "pages" even though no physical page number may be present.

Describing now in further detail the exemplary embodiment with reference to the Figure, there is shown by way of one example an electronic document imaging and printing system 10. It is shown with a printing engine or printer 12, here having a laser or LED array 13 electronically controlled to image a photoreceptor 14 which has a suitable conventional or other image development system. The developed image on the photoreceptor 14 is conventionally transferred therefrom by an image transfer system or station 15 onto copy sheets 16 which (unless they are being duplexed) are fed on to an output of printed sheets, here illustrated by an exemplary finishing module 17. By way of illustration in this exemplary system 10, several different copy sheet input trays are illustrated, including a bypass input tray for special sheets 18, as described above and below, and regular paper trays 19...