Photocopying – Projection printing and copying cameras – With developing
Patent
1997-09-22
2000-02-01
Mathews, Alan A.
Photocopying
Projection printing and copying cameras
With developing
355 20, 355 41, 396569, 396578, G03B 2752, G03B 2772
Patent
active
060209496
ABSTRACT:
An automatic correction method is used in connection with a device for correcting an image on a surface light source that can be reproduced with a high degree of quality on a print or a developed film by compensating for the effects of a lens system and the photosensitive material properties as well as the effects of the properties of the surface light source. Photographic printing paper is exposed to a calibration pattern and is transferred to the development section to be developed. Thus, the calibration pattern image is formed on the print paper. The density of each portion of the calibration pattern image on the print is measured in a density measurement section and stored in a memory device. A microprocessor reads the measured values out of a memory device and corrects the image data stored in a frame memory based on the measured values. Thus, the effects of the lens system and the photosensitive properties of the printing paper P as well as the effects of the luminance properties of the displayed image on the surface light source can be compensated for, so that the displayed image on the surface light source can be reproduced on the printing paper with a high degree of quality.
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Mathews Alan A.
Noritsu Koki Co., Ltd.
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