Offset master and method of imaging

Claim 1

IN THE METHOD OF IMAGING A LITHOGRAPHIC OFFSET MASTER FORMED OF A BASE SHEET HAVING A SURFACE WHICH IS WATER INSOLUBLE, WATER REPELLENT, OLEOPHILIC AND INK RECEPTIVE AND A CONTINUOUS REMOVABLE COATING ON THE SURFACE WHICH COATING IS WATER INSOLUBLE, WATER RECEPTIVE, HYDROPHILIC AND INK REPELLENT, THE STEPS OF FORMING AN ASSEMBLY BY POSITIONING A SHEET HAVING A CONTINUOUS COATING WHICH IS RENDERED ADHESIVE IN RESPONSE TO HEAT WITH THE ADHESIVE COATING IN SURFACE CONTACT WITH THE COATED SIDE OF THE MATERS, PROVIDING AN ORIGINAL CONTAINING AN INFRARED RAY ABSORBING-HEAT GENERATNG MATERIAL IN THE IMAGED PORTIONS TO BE REPRODUCED, DIRECTING RADIATION RICH IN INFRATED ONTO THE ORIGINAL WHEREBY RADIATIONS ARE ABSORBED IN THE IMAGED PORTIONS AND CONVERTED INTO HEAT TO FORM A HEAT PATTERN CORRESPONDING THERETO, SAID HEAT PATTERN TRANSFERRING TO THE ADHESIVE COATING TO RENDER THE LATTER ADHESIVE, AND SEPARATING THE ADHESIVE SURFACE FROM THE MASTER WHEREBY PORTIONS OF THE COATING CORRESPONDING TO THE ORIGINAL IMAGE ARE REMOVED WITH THE ADHESIVE SURFACE TO EXPOSE THE UNDERLYING INK RECEPTIVE, WATER REPELLENT PROTIONS ON THE BASE SHEET WHILE THE REMAINDER OF THE COATING REMAINS TO DEFINE THE WATER RECEPTIVE, HYDROPHILIC, NONIMAGED PORTIONS.