Patent ID: 11858252
Assignee: DUPONT ELECTRONICS, INC.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 4:
5. A method of making a printing form precursor comprising:
a) applying an infrared sensitive composition forming an infrared ablation layer on a temporary support,
b) printing a plurality of features with an ink onto a surface of the infrared ablation layer that is opposite the temporary support to form a pattern layer on the surface, wherein the pattern layer comprises a plurality of features wherein each feature has an area between 5 to 750 square microns, and the ink is opaque to actinic radiation and transparent to infrared radiation, thereby forming a digital coversheet;
c) applying a photopolymerizable composition comprising a first binder, a monomer, and a photoinitiator, forming a photopolymerizable layer between a support and the digital coversheet, wherein the pattern layer is disposed between the photopolymerizable layer and the infrared ablation layer; wherein the infrared ablation layer is for forming an in-situ mask by infrared ablation during conversion of the printing form precursor to a relief printing form.