Patent ReferencesPrinting-plate preparation apparatus employed in screen printing machine including a non-adhesive platen surface and a manuscript reading unit. Thermal head Image printing device Device for cooling thermal head Thermal transfer process with improved recording head life Thick film type thermal head and thermal recording device Patent #: 5157414 InventorsAssigneeApplicationNo. 968452 filed on 10/29/1992US Classes:101/128.4, Manufacture347/206Heating resistive elementsExaminersPrimary: Burr, Edgar S.Assistant: Raciti, Eric P. Attorney, Agent or FirmForeign Patent References
International ClassB41J 002/335Foreign Application Priority Data1990-06-14 JPAbstractA thermal plate making apparatus including a thermal head having a plurality of heating elements arranged in a line. Each element has a shape having substantially four corners. And a protruding portion for enhancing heat generation is formed at each of at least two diagonal corners of the element. | |