US 4,395,470 AGranted

Process of forming magnetic latent images

AssigneeFuji Xerox Co., Ltd.

InventorKoichi Saitoh

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Abstract

A process of forming magnetic latent images having an improved resolution and using a simple and high-speed mechanism. A magnetic recording body is heated in a pattern of a picture image to be recorded with a thermal pattern input device such as a thermal head array or laser device. The heated magnetic recording body is then brought into contact with a master magnetic body whereby the magnetized pattern on the master magnetic body is thermomagnetically transferred to the magnetic recording body to form a magnetic latent image thereon. The magnetic pattern on the master magnetic body is periodically variable. The master magnetic body has a Curie point equal to or greater than that of the magnetic recording body, preferably at least 50.degree. C. or higher.

Claims10

Dependent claims

A process of forming magnetic latent images using a magnetizable magnetic recording body, thermal pattern input means for heating the magnetic recording body in accordance with a picture image to be recorded, and a master magnetic body uniformly magnetized in advance, said process comprising the steps of:

(a) heating said magnetic recording body to a temperature at least equal to its Curie point in a pattern of a picture image to be recorded with said thermal pattern input means;
and
(b) bringing the heated magnetic recording body and said master magnetic body into contact with each other wherein said uniformly magnetized master magnetic body causes a thermomagnetic transfer onto said magnetic recording body to form a magnetic latent image on said magnetic recording body corresponding to said pattern of said picture image by thermal residual magnetization.

Dependencies are inferred from the claim text.