Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – To produce color reproduction
Patent
1995-12-05
1998-05-12
Goodrow, John
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
To produce color reproduction
430 49, G03G 1326
Patent
active
057502978
ABSTRACT:
Products, methods and inventive uses for introducing from an in-color subject image with pictorial content (14) and to electrostatic printing plates (21, 23, 25 and 27), respective ones of offset transfer images for four color separations from the subject image (22C, 24M, 26Y and 28K) by means of copier apparatus with a color separations function (30); and, making objectively superior printed images by the plates with the introduced transfer images. The subject image is supplied to the platen (31) of the apparatus. The plates are presented to the apparatus at or by an access facility such as an external tray (34) or a casette (38) at an internal site (37). The apparatus is worked in the function with reference to supplied subject image and presented plates. The introductions occur as, in the course of the working, the plates operationally transit of the apparatus. Thereafter, each plate may be etched and then mounted on a press (40). Each transfer image is defined by toner on the emulsion layer of the plate on which it is carried, and has a distribution or pattern of dots that, for pictorial content of the separation and in printed matter made with the plate, is at least equivalent to 150 line screen.
REFERENCES:
patent: 3634087 (1972-01-01), Houle et al.
patent: 5110156 (1992-05-01), Axelrod
Evenstad Damon F.
Evenstad Steven C.
Goodrow John
Ramm Walter C.
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