Patent ID: 9556349
Date: 2017-01-31
CPC Classifications: B41J,B41M,B44C,C09D,C23F,G03F,H05K,Y10T

Claim:
1. A method of inkjet printing comprising the steps of: a) forming protected areas on a metal surface by printing and curing a radiation curable inkjet ink on the metal surface; b) removing metal from unprotected areas of the metal surface by etching; and c) removing at least partially the radiation curable inkjet ink cured on the metal surface from the protected areas of the metal surface; wherein the radiation curable inkjet ink includes at least 70 percent by weight of a polymerizable composition based on a total weight of the radiation curable inkjet ink; the polymerizable composition has an oxygen fraction OFR>0.250 and a weighted polymerizable functionality WPF≧0.0050; n=a number of polymerizable compounds in the polymerizable composition having a different chemical structural formula from each other; N MW the radiation curable inkjet ink contains no polymerizable compound with an ethylenic double bond including a phosphoester group and contains no polymerizable compound with an ethylenic double bond and a carboxylic acid group.