Image forming apparatus for forming a master copy

Details Image forming apparatus for forming a master copy Image forming apparatus for forming a master copy

1990-03-14

1992-08-18

Moses, R. L.

Photocopying

Contact printing

Light boxes

355213, 355272, 346 742, G03G 1500

Patent

active

051403706

ABSTRACT:
An image forming apparatus having a static latent image forming unit for forming a static latent image corresponding to an original image on an image carrying member, a first developing unit for developing the static latent image, formed by the static latent image forming unit, by a first magnetic developing agent containing a magnetizable magnetic material, so as to form a first developing agent image, a fixing unit for fixing the first developing agent image, formed by the first developing unit, on the image carrying member, a magnetizing unit for magnetizing the first developing agent image fixed by the fixing unit, so as to form a magnetic latent image, a second developing unit for developing the magnetic latent image by a second magnetic developing agent whose magnetic material content is lower than that of the first magnetic developing agent, so as to form forming a second developing agent image, and a transferring unit for transferring the second developing agent image to a recording medium.

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patent: 4407918 (1983-10-01), Sato
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