Method of making letterpress printing plates

Details Method of making letterpress printing plates Method of making letterpress printing plates

1981-10-29

1983-10-04

Childs, S. L.

Coating processes

Hectrographic or copying surface making

101395, 1014011, 427145, 427348, 427411, 428537, 428908, 428909, 430306, 430309, B41L 700, B41L 900

Patent

active

044078625

ABSTRACT:
A method of preparing a letterpress printing plate from a liquid photopolymer using an air knife to etch out the unpolymerized liquid to leave the relief image. A new printing plate substrate is used that has a laminae that is paper and a lamina that is a sealing coat on the paper. The paper is a special paper known as tag stock that is 5 to 20 mils thick, has tensile strengths of at least 30 pounds per inch in width in the press direction and at least 20 pounds per inch in width in the cross press direction, and fibers that are independently colored with a dark color having a good light absorption/reflectivity ratio.

REFERENCES:
patent: 2760863 (1956-08-01), Plambeck, Jr.
patent: 2961342 (1960-11-01), Snyder
patent: 3615450 (1971-10-01), Weber et al.
patent: 3635711 (1972-01-01), Miller
patent: 3640219 (1972-02-01), Farnham et al.
patent: 3672888 (1972-06-01), Hasegawa et al.
patent: 3733200 (1973-05-01), Takaishi et al.
patent: 3922751 (1975-12-01), Wessells et al.
patent: 4120721 (1978-10-01), Ketley et al.

Affiliated with

Also associated with

Rating

Method of making letterpress printing plates does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of making letterpress printing plates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making letterpress printing plates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-973667