| 摘要 |
<p>IR-sensitive element comprising
(a) a substrate with a hydrophilic surface, and
(b) a positive working coating comprising
(i) at least 40 wt.-%, based on the dry weight of the coating, of at least one polymer which comprises phenolic OH groups and/or sulfonamide groups and is soluble in aqueous alkaline developer,
(ii) at least one arylpolysiloxane resin having a hydroxy content of at least 1 wt.-% based on the weight of the resin and a glass transition temperature in excess of 60°C,
(iii) at least one substance capable of absorbing radiation of a wavelength from the range of 650 to 1,300 nm and converting it into heat, and
(iv) optionally at least one further component selected from print-out dyes, plasticizers, surfactants, inorganic fillers, antioxidants, contrast dyes and pigments, and polymer particles.</p> |
