Method for preparing high resolution polyimide images using non-

Details Method for preparing high resolution polyimide images using non- Method for preparing high resolution polyimide images using non-

1995-05-02

1997-03-11

Lusignan, Michael

Coating processes

Nonuniform coating

Applying superposed diverse coatings or coating a coated base

427273, 427353, B05D 506

Patent

active

056099142

ABSTRACT:
A method for preparing high resolution wash-off polyimide images is described having the sequential steps of (a) providing a non-photosensitive layer containing a substantially non-crystalline poly(amic acid) polymer or salt thereof on a substrate; (b) applying an aqueous ink imagewise to the non-photosensitive layer to change the solubility in the ink-applied areas, the aqueous ink containing a solubility altering agent; (c) washing the non-photosensitive layer with an aqueous solution to remove the soluble areas; and (d) converting the poly(amic acid) polymer to a polyimide.

REFERENCES:
patent: 5270078 (1993-12-01), Walker et al.
patent: 5466653 (1995-11-01), Ma et al.

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