Photocopying – Projection printing and copying cameras – Multicolor picture
Patent
1985-06-28
1986-08-05
Wintercorn, Richard A.
Photocopying
Projection printing and copying cameras
Multicolor picture
355 75, G03B 2780, G03B 2762
Patent
active
046039651
ABSTRACT:
A color printing apparatus and method in which a light chamber receives light from a light source after the light has passed through a negative supported by a negative carrier. The light chamber has a number of electronic sensors which sense the light in the chamber and control filters across the path of the light before the light strikes a color paper strip for printing the image of a negative onto the strip itself. In one embodiment of the invention, a negative carrier has a number of slots adjacent to the opening in the carrier across which the negative is to be placed in the path of the light beam. These slots provide passages for additional light from the light source into the light chamber whereby the light passing through the negative and the additional light is mixed together to dilute the total light in the chamber to normalize the readings of the sensors before the sensors are used to actuate filters across the path of the light beam. In another embodiment, light from a light source can be directed into the light chamber along a path defined by a light passage, such as a fiber optics bundle. In a third embodiment, the invention can include a light source in the light chamber itself with the light source being actuated when light passes through the negative for exposing the image on a color paper strip.
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