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Volume: 15 | Article ID: art00013_1
Ink-Repellent Coatings Composed of Silicone-Acrylic Block Copolymer for Ink Jet Printer
  DOI :  10.2352/ISSN.2169-4451.1999.15.1.art00013_1  Published OnlineJanuary 1999

The silicone-acrylic block copolymers were prepared by free radical copolymerization, in which we used polydimethylsiloxane containing azo groups as a macromolecular initiator and acrylic monomers including functional monomers. The copolymer solutions were coated on substrates by various application methods, subsequently cured with either cross-linking agents or UV light. Advancing (A) and receding (R) contact angles of the resulting films were measured in various inks. The films were hard enough for a nozzle face, exhibited over 80° of A and 60° of R in an ink, which were superior to those of silicone or fluorinated coating films. The ink-resistance of the films was evaluated by changes in A and R before and after soaking the films into inks at 60°C for 4 weeks. The durability of the films were outstanding. The excellent properties were found to be caused by microdomain structure and to be influenced by domain spacing rather than silicone content.

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Masatoshi Ohata, Shigeru Mikami, Hiroharu Osugi, "Ink-Repellent Coatings Composed of Silicone-Acrylic Block Copolymer for Ink Jet Printerin Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP15),  1999,  pp 48 - 51,

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