Photocopying – Projection printing and copying cameras – Illumination systems or details
Patent
1992-12-02
1995-05-02
Rutledge, D.
Photocopying
Projection printing and copying cameras
Illumination systems or details
355 71, 355 77, G03B 2780, G03B 2772
Patent
active
054124514
ABSTRACT:
A photographic printing apparatus includes conveying rollers for conveying a film on which images are recorded, an image sensor for measuring image density, a device for determining printing conditions for each image based on a measured image density and for storing the printing conditions, a display for simulating an image to be printed onto photographic printing paper based on results of measurement by the image sensor and for displaying a simulated image, a reflecting mirror which is movable between a first position, at which the reflecting mirror guides light, which is irradiated from a light source and which passes through the film at a printing position, to the image sensor, and a second position, at which the reflecting mirror guides light, which passes through the film, to the photographic printing paper, and a control device. The control device controls the conveying rollers, the image sensor, the device for storing, and the reflecting mirror so that when the reflecting mirror is at the first position, for each frame, a density of an image at the printing position is measured and printing conditions of the image are determined based on the results of measurement and are stored, and thereafter, the reflecting mirror is moved to the second position and, for each frame, an image at the printing position is printed onto the photographic printing paper under stored printing conditions.
REFERENCES:
patent: 4806990 (1989-02-01), Tahara
patent: 4933713 (1990-06-01), Tsuji et al.
patent: 4933733 (1990-06-01), Shiota et al.
English language abstract of Japanese Patent Application No. 2-278248.
Bram Eric
Fuji Photo Film Co. , Ltd.
Rutledge D.
Turner Richard C.
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