High-speed negative thermal printing plate

Patent Name High Speed ​​Negative Thermal Printing Patent Applicant Kodak Painted Design Co., Ltd. Principal Applicant Address Connecticut Inventor Heidi M. Mannelli; Paul R. West; Shaxi Kent Saree Yajian; Huang Jianbing Application (Patent) No. 03819504.6 Date of Application 2003.08.07 Approval Date Approval Notice No. 1675064 Audit Notice Date 2005.09.28 Instruction CD No. D0539 Main Classification No. B41C1/10 Classification No. B41C1/10 Classification No. Original Application No. 2002.8.12 US 10/217,005 Abstract The present invention discloses negative thermal imaging elements useful as lithographic printing plate precursors and methods of their use. The element includes a substrate, an imaging composition layer over the substrate, and optionally a protective layer over the imaging composition layer. The imaging composition includes an allyl functional polymeric binder. No need to post-exposure bake to achieve the best resolution and instant print performance. The element does not require post-exposure bake and can be used for ready-to-print applications. Slavs 1. An imaging element comprising a substrate; and an imaging layer comprising an imaging composition above the substrate; the imaging composition comprising: (i) at least one allyl-functional polymeric binder The allyl functional polymeric binder contains about 0.7 to about 8.0 meq of allyl functional groups per gram of polymeric binder; (ii) at least one cyanine dye capable of absorbing infrared radiation; (iii) at least one a free radical polymerizable compound; and (iv) a radical generating system comprising: (a) at least one polyhaloalkyl substituted compound capable of generating free radicals, and (b) at least one of the following formulae: Carboxylic acid: wherein: R4, R5, R6, R7 and R8 are each independently selected from the group consisting of hydrogen, alkyl, aryl, halogen, alkoxy, hydroxyalkyl, carboxyl, carboxyalkyl, alkylthio Alkyl, alkylsulfonyl, sulfo, alkyl sulfonate, dialkylamino, acyl, alkoxycarbonyl, cyano and nitro; or R4 and R5, R5 and R6, R6 and R7 or R7 and R8 Together constitute an aromatic or aliphatic ring; R9 is selected from the group consisting of: hydrogen, alkyl, aryl, hydroxyalkyl, carboxyalkyl Acyl, alkoxycarbonyl, alkylsulfonyl, and alkyl sulfonate; or R9 is an electron pair; R10 is an alkylene of C1-C6 carbon atoms; or R8 and R9 together form a heterocycle; or R9 and R10 are common Constitute a heterocycle; or R9 or R10 and R4 or R8 form a heterocycle; and A is a heteroatom selected from N, O, and S. International Application PCT/US2003/024782 2003.8.7 International Publication WO2004/014652 English 2004.2.19 Date of Entry into the Country Patent Agency Yongxin Patent and Trademark Agency Co., Ltd. Agency Address Agent Xiaodong Guo