Browse Prior Art Database

DOCUMENT CARRIER "SHOW-THROUGH" REDUCER

IP.com Disclosure Number: IPCOM000023808D
Original Publication Date: 1979-Feb-28
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 189K

Publishing Venue

Xerox Disclosure Journal

Abstract

In some xerographic products that use belts to carry input documents into the processor, a cosmetic effect sometimes appears in the output copy known as "show-through". This is the reproduction of the document carrier hole pattern used to produce a document holding vacuum which shows through the original document, particularly if the original is on thin paper, such as 13 pound bond,

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DOCUM ENT CARRIER "SHOW~THRCUGM" Proposed Classification REDUCER U.S. CI. 271/12 H~5~rtL. Bresnick mt. CI. B65h 5/08

In some xerographic products that use belts to carry input documents into the processor, a cosmetic effect sometimes appears in the output copy known as "show- through". This is the reproduction of the document carrier hole pattern used to produce a document holding vacuum which shows through the original document, particularly if the original is on thin paper, such as 13 pound bond,

Xerographic machines using magnetic brush development sometimes exhibit a cosmetic defect known as "vertical development deficiency" in which vertical lines (those perpendicular to the process direction) develop out thinner and lighter than the horizontal line.

This "show-through" may be reduced by taking advantage of the presence of "vertical development deficiency" by using vertical slots in the document carrier belt instead of circular holes for the vacuum hold down; thus, the "show-through" pattern will be considerably reduced in severity due to the "vertical development deficiency".

Volume 4 Number I 3anuary/February 1979 57

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