Heat-sensitive copying method for preparation of printing stenci

Details Heat-sensitive copying method for preparation of printing stenci Heat-sensitive copying method for preparation of printing stenci

1975-07-07

1978-05-30

Coughenour, Clyde I.

Printing

Stenciling

Stencils

1011284, 156229, 250317, B41N 124, B41C 114

Patent

active

040917274

ABSTRACT:
A stencil sheet having a thin stretched thermoplastic resin film supported on an ink pervious porous substrate is positioned on an original manuscript in a manner such that the film may be in close contact with the imaged side of the manuscript. The assembly is then irradiated by a light which is rich in rays having a wavelength ranging from 0.7 to 1.2 microns and has a flash duration of from 10.sup.-4 to 10.sup.-3 second. A xenon-filled electronic flash discharge tube is found to be the most suitable light source. Stencil openings formed thereby on the film surface are excellent in definition and free from marginal swelling therearound. The stencil prepared by this method can produce copies of 2000 or more which correspond exactly with the original manuscript.

REFERENCES:
patent: 2844733 (1958-07-01), Miller et al.
patent: 2868124 (1959-01-01), Crawford
patent: 3103881 (1963-09-01), Grieshaber
patent: 3163755 (1964-12-01), Kotz et al.
patent: 3619157 (1971-11-01), Brinckman

Affiliated with

Also associated with

Rating

Heat-sensitive copying method for preparation of printing stenci does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Heat-sensitive copying method for preparation of printing stenci, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heat-sensitive copying method for preparation of printing stenci will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-464594