Photographic direct-print system
AssigneePortage Newspaper Supply Company
InventorEric B. Williams
Life of this patent
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AssigneePortage Newspaper Supply Company
InventorEric B. Williams
Estimating the term…
A photographic direct-print system for producing a screened print from a continuous tone negative. Fundamentally, the invention includes an enlarger having a main lamp associated therewith for receiving a negative and casting an image thereof upon an easel. Flashlamps are maintained in juxtaposition to the easel for further illuminating the same. A density read-out circuit, comprising a photodiode presenting an output to a digital volt meter, is included for measuring the light intensity of various areas of the image, such read-out determining the lens setting of the enlarger and the intensity of the flashlamps, as regulated by a power phase control circuit. A timer is included for controlling a period of simultaneous energization of the enlarger and flashlamps, the timer being controlled by a clock having a frequency which is dependent upon the intensity of the main lamp of the enlarger.
A direct-print system for producing screened prints comprising:
Apparatus for producing screened prints directly from a continuous tone negative, comprising:
A direct-print system for producing screened prints comprising:
Dependencies are inferred from the claim text.