Photographic printer

Photocopying – Projection printing and copying cameras – With cathode ray tube for light source

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Details

355 40, 355 68, 355 38, 358 80, G03B 2780

Patent

active

049030680

ABSTRACT:
A photographic printer has a black-and-white CRT which is used as a light source for illuminating an original film with a flying light spot when making a print of a frame of the original film in a three color frame sequential exposure. While making prints of the respective frames of the original film, image signals are stored in a memory by color on a frame by frame basis. The image signals are read out from the memory after every predetermined number of frames, and are electrically processed to provide composite video image signals which are displayed on a CRT as an inlaid composite video image of the predetermined number of frames to which a photographic paper is exposed. A mirror, which may be either a half or a full mirror, is provided to reflect the flying spot light passed through the original film to a light detecting device from which output signals are transmitted to the memory.

REFERENCES:
patent: 4364084 (1982-12-01), Akimoto et al.
patent: 4531150 (1985-07-01), Amano
patent: 4693596 (1987-09-01), Shigaki

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