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BLUE BLOCKING DOCUMENT CARRIER TO IMPROVE COLOR COPYABILITY

IP.com Disclosure Number: IPCOM000025558D
Original Publication Date: 1986-Feb-28
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 49K

Publishing Venue

Xerox Disclosure Journal

Abstract

Many copiers have difficulty in copying blue colors from an original document because of the large amount of energy in the blue portion of the document illumination lamp spectrum. An inexpensive solution to this problem is to provide the copier with a blue-blocking overlay capability in the form of a sheet or pocketed document carrier. plastic sheet such as a Xerox 3R2787 transparency is recommended as an inexpensive material. When a document contains any blue information, the overlay is placed between the document and the platen. The document is thus illuminated with reduced energy in the blue part of the spectrum and the blue portions are better distinguished from the white background.

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XEROX -DISCLOSURE JOURNAL

BLUE BLOCKING DOCUMENT CARRIER TO IMPROVE COLOR COPYABILITY Thomas J. Hammond

Proposed Classification
U.S. C1. 3W67

Int. Cl. G03b 27/54

Many copiers have difficulty in copying blue colors from an original document because of the large amount of energy in the blue portion of the document illumination lamp spectrum. An inexpensive solution to this problem is to provide the copier with a blue-blocking overlay capability in the form of a sheet or pocketed document carrier. plastic sheet such as a Xerox 3R2787
transparency is recommended as an inexpensive material. When a document contains any blue information, the overlay is placed between the document and the platen. The document is thus illuminated with reduced energy in the blue part of the spectrum and the blue portions are better distinguished from the white background.

A yellow

Volume 11 Number 1 January/February 1986 43

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   XEROX DISCLOSURE JOURNAL Volume 11 Number 1 January/February 1986

44

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