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Magnetic Imaging System for Magnetic Printing

IP.com Disclosure Number: IPCOM000042127D
Original Publication Date: 1984-Mar-01
Included in the Prior Art Database: 2005-Feb-03

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Kahwaty, VN [+details]


Conventional magnetic tape can be used as a magnetic imaging medium for magnetic printing as well as direct recording of the image where a small magnetized spot produces a pel (picture element) [1]. Alternatively, an image can be formed by erasure of a background pattern; this technique is common in the electrophotographic art where the imaging surface is a charged photoconductor and an image is formed by discharging the background with a controlled light source, such as a laser. In the magnetic printing case where a continuous series of flux reversals is necessary to provide an imaging force for magnetic toner, this requirement can be satisfied by recording an NRZ pattern in the magnetic tape imaging medium.