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MAGNETOGRAPHIC ERASER

IP.com Disclosure Number: IPCOM000024451D
Original Publication Date: 1980-Aug-31
Included in the Prior Art Database: 2004-Apr-02
Document File: 1 page(s) / 40K

Publishing Venue

Xerox Disclosure Journal

Abstract

During magnetographic imaging, before development of the magnetic latent image, it is sometimes desired to erase an imaged character or code and subsequently re-image and develop a corrected version. By means of a portable magnetic brush made from a material such as magnetized stainless steel fibers, a magnetic erasing field can be applied to the specific area to be corrected. These areas can first be made visible with a magnetic viewer. Upon subsequent development, the demagnetized area will leave a clean spot. The tape can be re-imaged, if desired, at a later time. By using a small electromagnet, battery and switch, the magnetic erase field can be controlled by the operator with somewhat less danger of erasing areas accidentally.

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XEROX DISCLOSURE JOURNAL

MAG NETOG R APHIC ERASER Proposed Herbert L. Bresnick Classification

U.S. CI. 427/444 Int. C1. B05d 3/00

During magnetographic imaging, before development of the magnetic latent image, it is sometimes desired to erase an imaged character or code and subsequently re- image and develop a corrected version.

By means of a portable magnetic brush made from a material such as magnetized stainless steel fibers, a magnetic erasing field can be applied to the specific area to be corrected. These areas can first be made visible with a magnetic viewer. Upon subsequent development, the demagnetized area will leave a clean spot. The tape can be re-imaged, if desired, at a later time. By using a small electromagnet, battery and switch, the magnetic erase field can be controlled by the operator with somewhat less danger of erasing areas accidentally.

Volume 5 Number 4 July/August 1980 457

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