发明名称 Pad transfer printing method for making colored contact lenses
摘要 A method comprises the steps of (a) providing a water based ink in at least one cliché with a contact lens pattern; (b) transferring the water based ink from the cliché to at least a surface of at least a contact lens forming mold by means of at least a transfer pad; (c) at least partially curing the ink transferred on the mold to form a colored film; (d) dispensing a hydrogel lens-forming material into a lens-forming cavity of the mold; and (e) curing the lens-forming material within the lens-forming cavity to form the contact lens, whereby the colored film detaches from the molding surface and becomes integral with the body of the contact lens; characterized in that the relative air humidity in the immediate vicinities of the transfer pad/s is kept higher than 50% at standard temperature and pressure conditions during ink transfer.
申请公布号 US7255438(B2) 申请公布日期 2007.08.14
申请号 US20050226604 申请日期 2005.09.14
申请人 NOVARTIS AG 发明人 ATKINS BARRY L.;DOERR NORBERT;FISCHER ALFRED;QUINN MICHAEL HUGH;SCHMIEDER ROLAND;TUCKER ROBERT CAREY
分类号 G02C7/02;G02C7/04 主分类号 G02C7/02
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