Method for exposing flexographic plates

Details Method for exposing flexographic plates Method for exposing flexographic plates

1999-06-23

2000-05-16

Baxter, Janet

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making printing plates

430 5, G03F 900

Patent

active

060635460

ABSTRACT:
A method for creating a flexographic printing plate includes creating a mask which has opaque and non-opaque regions. The non-opaque regions have variable optical densities. Areas of the mask corresponding to portions of the plate which will require higher exposures have lower optical densities. Areas of the mask corresponding to portions of the plate which will require lower exposures have higher optical densities. A flexographic photo-polymer printing plate is exposed through the mask. The varying optical density of the mask allows all portions of the printing plate to be exposed with a single exposure. The mask may include a thermal film which may be integral with the printing plate.

REFERENCES:
patent: 5213916 (1993-05-01), Cronin et al.
patent: 5262275 (1993-11-01), Fan
patent: 5506086 (1996-04-01), Van Zoeren
patent: 5725972 (1998-03-01), Takeshita

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