Method of treating substrates
Lithographic base and a method for making a lithographic printing plate therewith Patent #: 5462833
ApplicationNo. 751764 filed on 11/08/1996
US Classes:430/270.1, Radiation sensitive composition or product or process of making430/302, Lithographic430/309, Post imaging process430/330, Including heating430/348, THERMOGRAPHIC PROCESS430/927, Radiation-activated cross-linking agent containing430/955, PRECURSOR COMPOUND430/964THERMAL IMAGING COMPOSITION
ExaminersPrimary: Schilling, Richard L.
Attorney, Agent or Firm
Foreign Patent References
International ClassesG03F 007/30
Foreign Application Priority Data1995-11-09 EP
AbstractThe present invention discloses an imaging element comprising on a hydrophilic surface of a lithographic base an image forming layer comprising hydrophobic thermoplastic polymer particles dispersed in a hydrophilic binder and (ii) a compound capable of converting light to heat, said compound being comprised in said image forming layer or a layer adjacent thereto, characterised in that said image forming layer further comprises a cross-linking agent capable of cross-linking said hydrophilic binder upon heating in a ratio between 1:100 and 200:1 by weight versus the hydrophilic binder.The present invention further provides a method for making a printing plate therewith. According to this method, the above imaging element is preferably exposed by means of a laser and is subsequently developed with plain water or an aqueous liquid.
Field of SearchImagewise heating, element or image receiving layers therefor or imagewise vapor and gas transfer process, element or image receiving layer therefor
THERMAL IMAGING COMPOSITION
Radiation-activated cross-linking agent containing
Radiation sensitive composition or product or process of making
Post imaging process
Fluid treating the coating (e.g., vapor treating, etc.)