James H Hamlin

US Patent:

41421949, Feb 27, 1979

Filed:

Sep 6, 1977

Appl. No.:

5/830477

Inventors:

James S. Hamlin - Cherry Hill NJ

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

G03D 500

US Classification:

354318

Abstract:

A processor for photopolymerizable films is described. In this processor, film is fed, image up, in a straight through path by a series of soft rubber covered transport rollers first into a development section, then to a rinse section, and finally to a dryer section. In the developer section, developer is delivered through spray pipes which maintain a curtain of developer cascading over the top rolls at both the entrance and exit of the developer section. The film is thus maintained flooded in a precisely controlled, well defined surface region such that the time in which the film undergoes development may be accurately controlled by varying film speed. The film is then rinsed in the rinse section by a high impact spray system and then dried.

US Patent:

41981537, Apr 15, 1980

Filed:

Jan 18, 1979

Appl. No.:

6/004489

Inventors:

James S. Hamlin - Cherry Hill NJ

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

G03D 306

US Classification:

354325

Abstract:

A semiautomatic apparatus for processing the imaged surface of a printing plate. The apparatus includes an enclosed tray in which a plate is processed and a storage tank for processing liquid. In a processing cycle, the tank and tray are moved in timed sequence to transfer the liquid from the tank to the tray and back and to drain subsequently introduced wash water from the tray.