Browse Prior Art Database

DUAL SCANNING ARRAY RASTER INPUT SCANNER WITH A BOTTOM VACUUM FEEDER

IP.com Disclosure Number: IPCOM000026583D
Original Publication Date: 1992-Oct-31
Included in the Prior Art Database: 2004-Apr-06
Document File: 4 page(s) / 175K

Publishing Venue

Xerox Disclosure Journal

Abstract

Acquisition of information adaptable for electronic processing directly from printed original documents has become greatly desirable as an adjunct to electronic document production. An important reason for its desirability is the subsequent capability of manipulation of electronic stored information for editing, compiling, and using the information in forms other than that in which is was originally available. Subsequently, it is desirable to have an image information input capability for such information. In addition to the production of new documents from electronically stored information, it will also be appreciated that some copying functions available in light lens type copies, for copying images directly from original documents, may be more readily accomplished if image formation is available electronically. Thus, with the capability of the electronic input of information, coupled with available output devices, functions such as duplex copying, image rotation, cropping, editing, and etc. are possible without the requirement of difficult mechanical manipulation of originals and copies.

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Page 1 of 4

XEROX DISCLOSURE JOURNAL

DUAL SCANNING ARRAY RASTER INPUT SCANNER WITH A BOTTOM VACUUM FEEDER
Dan F. Lockwood

Proposed Classification

US. C1.355/321
Int. C1. G03g 21/00

8

56

XEROX DISCLOSURE JOURNAL - Vo1.17 No. 5 September/October 1992 383

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DUAL SCANNING ARRAY RASTER INPUT SCANNER WITH A BOTTOM VACUUM FEEDER(Cont'd)

Acquisition of information adaptable for electronic processing directly from printed original documents has become greatly desirable as an adjunct to electronic document production. An important reason for its desirability is the subsequent capability of manipulation of electronic stored information for editing, compiling, and using the information in forms other than that in which is was originally available. Subsequently, it is desirable to have an image information input capability for such information. In addition to the production of new documents from electronically stored information, it will also be appreciated that some copying functions available in light lens type copies, for copying images directly from original documents, may be more readily accomplished if image formation is available electronically. Thus, with the capability of the electronic input of information, coupled with available output devices, functions such as duplex copying, image rotation, cropping, editing, and etc. are possible without the requirement of difficult mechanical manipulation of originals and copies.

In view of the above factors, it has become desirable to provide arrangements allowing faster document handling, particularly adapted to the applications of raster input scanners. It is desirable to provide a scanning device for scanning duplex documents, i.e., original documents having image information on both sides, for simplex documents having information only on one side, and for material not adaptable to be passed through sheet handling devices.

The present invention is directed at a method of feeding sheets to a simultaneous duplex scanning station, which provides for one of the scanning elements to scan across a document supporting platen. Accordingly, a paper path design is disclosed for a high performance image input scanner featuring a straight through paper path.

The elements include bottom vacuum feeder, deskew device, controlled velocity transport, fixed scan head, moving scan head, sliding scan carriage, corrugation stacker, catch tray, and SADHICFF input slot.

An example layout of the document handler is illustrated in the Figure. Referring now to the illustration, a bottom vacuum feeder 1 feeds documents in l-N order to the paper path. A deskew device is arranged between the paper feeder and the scanning station. The deskewing nip 2 places documents in a desired registered position before entering the scann...