Microfilm reader-printer having an image fermation device

Details Microfilm reader-printer having an image fermation device Microfilm reader-printer having an image fermation device

1986-10-30

1989-04-11

Salce, Patrick R.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3CH, 355 14CH, G03G 1500

Patent

active

048210676

ABSTRACT:
A microfilm reader-printer including an image formation device having an image baring roll, a charger, an exposure apparatus, an apparatus which carries out the normal development of the image bearing roll, an apparatus which carries out the inverted development of the image bearing roll, and an apparatus which transfers the toner image which is formed on the image bearer. The reader-printer further includes a switch which specifies the size of the recording paper, an exposure shutter device, and a microcomputer. The microcomputer directs forming a toner image only in a region on the image bearer that can be transferred to the recording paper, in accordance with the size of the recording paper that is detected by a detector, in such a way as to control, in the case of the inverted development, the opening and closing of the exposure shutter device, and to control, in the case of the normal development, the charger. In addition, this microfilm reader-printer includes a freely attachable and detachable developing apparatus which develops the image bearing roll, an apparatus which transfers a toner image formed on the image bearer to the recording paper, and a microcomputer which controls the image formation unit so as to bring only the image formation operation to a standstill when the developing apparatus is not set on the image formation unit.

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