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    • 1. 发明授权
    • Thermal print head
    • 热敏打印头
    • US4707708A
    • 1987-11-17
    • US911323
    • 1986-09-25
    • Tomoji KitagishiAkira SasakiAkiyoshi HakoyamaShigetaka FurukawaMasafumi SuzakiRyooichi KobayashiKatsumasa MikamiYoshihito TakahashiYousuke NaganoTakeo Honma
    • Tomoji KitagishiAkira SasakiAkiyoshi HakoyamaShigetaka FurukawaMasafumi SuzakiRyooichi KobayashiKatsumasa MikamiYoshihito TakahashiYousuke NaganoTakeo Honma
    • B41J2/335G01D15/10B41J3/20H05B1/00
    • B41J2/33525B41J2/33545B41J2/3355B41J2/3357
    • A thermal trasfer printer including a thermal head, and a platen positioned against the thermal head through a printing sheet. The thermal head has a substrate formed of heat insulating material, at least one glaze layer on a top surface of the substrate extending longitudinally thereof, a plurality of heat generating elements on the glaze layer, a plurality of electrodes each connected to the heat generating elements in a manner to form an opening for the heat generating elements and a protective layer for preventing the electrodes and heat generating elements from contacting the printing sheet to avoid their wear. A portion of the protective layer for protectng the heat generating elements has a height which is greater by more than 5 .mu.m than the height of a portion of the protective layer for protecting the electrodes. The width of the glaze layer transversely of the substrate is less than 200 .mu.m at a location which is 10 .mu.m below a top surface of the portion of the protective layer for protecting the heat generating elements in a vertical direction. The platen is a flat platen and its deflection caused to occur by a biasing force exerted on the thermal is more than 0.02 time and less than twice as great as the height of the glaze layer.
    • 一种热转印打印机,其包括热敏头,以及通过打印纸定位在热敏头上的压板。 热敏头具有由绝热材料形成的基板,在基板纵向延伸的基板的顶面上的至少一个釉层,釉层上的多个发热元件,多个电极,每个电极连接到发热元件 以形成用于发热元件的开口和用于防止电极和发热元件与打印片接触以避免其磨损的保护层。 用于保护发热元件的保护层的一部分具有比用于保护电极的保护层的一部分的高度大5微米以上的高度。 在保护层部分的顶部表面以下10μm的位置处,垂直方向上保护发热元件的位置上,横向于衬底的釉料层的宽度小于200μm。 压板是平坦的压板,并且由于施加在热上的偏置力而发生的偏转大于0.02倍,并且小于釉层的高度的两倍。