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    • 8. 发明授权
    • Thermal printer for a low cost electronic mail terminal
    • 用于低成本电子邮件终端的热敏打印机
    • US4549825A
    • 1985-10-29
    • US633609
    • 1984-07-23
    • Russell Fish, IIIJames R. Yurchenco
    • Russell Fish, IIIJames R. Yurchenco
    • H04L21/00B41J29/02
    • H04L21/00
    • An electronic mail terminal 10 that includes a keyboard 12, multi-character display 14, thermal printer 22, tape drive 118, and communication and control circuitry. The tape drive and printer mount to molded-in features of a base housing 20. A printed circuit board 28 containing the communication and control circuitry and the display is mounted to molded-in features of the base housing. The keyboard plugs into the printed circuit board from above and is supported at the sides by stand-offs in the base housing. A cover housing 88 mates with molded-in features of the base housing. The tape drive mechanism includes cassette guides 98 and 376 that are molded into the base and cover housings and a spring loaded motor mount that automatically compensates for wear and positioning tolerances. A printer carriage motor 184 drives a toothed belt 182 to position a carriage 138 which holds a thermal print head 140. An optical encoder 146 and a mechanical switch 194 provide position feedback of carriage position to the control circuitry. A paper advance motor 256 advances the paper through a worm gear train 256, 262 with position feedback provided by a mechanical switch 280. The printer carriage is a molded plastic runner to which the toothed belt and the thermal print head attaches. A metal clip 340 provides an easily removable mounting for the print head.
    • 包括键盘12,多字符显示器14,热敏打印机22,磁带驱动器118以及通信和控制电路的电子邮件终端10。 带式驱动器和打印机安装件用于模制成基座壳体20的特征。包含通信和控制电路和显示器的印刷电路板28被安装到基座壳体的模制特征中。 键盘从上方插入印刷电路板,并通过底座中的支架在侧面支撑。 盖壳体88与基座壳体的模制特征配合。 带驱动机构包括模制到基座和盖壳体中的盒引导件98和376以及自动补偿磨损和定位公差的弹簧加载电机安装座。 打印机滑架马达184驱动齿形带182以定位保持热打印头140的滑架138.光学编码器146和机械开关194提供滑架位置到控制电路的位置反馈。 纸张提前电动机256通过具有由机械开关280提供的位置反馈的蜗轮系256,262推进纸张。打印机滑架是齿形带和热打印头附接到的模制塑料流道。 金属夹340提供用于打印头的容易移除的安装。
    • 9. 发明授权
    • Low-cost electronic mail terminal
    • 低成本电子邮件终端
    • US4524242A
    • 1985-06-18
    • US465040
    • 1983-02-08
    • Russell Fish, IIIJames R. Yurchenco
    • Russell Fish, IIIJames R. Yurchenco
    • H04L21/00
    • H04L21/00
    • An electronic mail terminal 10 that includes a keyboard 12, multi-character display 14, thermal printer 22, tape drive 118, and communication and control circuitry. The tape drive and printer mount to molded-in features of a base housing 20. A printed circuit board 28 containing the communication and control circuitry and the display is mounted to molded-in features of the base housing. The keyboard plugs into the printed circuit board from above and is supported at the sides by stand-offs in the base housing. A cover housing 88 mates with molded-in features of the base housing. The tape drive mechanism includes cassette guides 98 and 376 that are molded into the base and cover housings and a spring loaded motor mount that automatically compensates for wear and positioning tolerances. A printer carriage motor 184 drives a toothed belt 182 to position a carriage 138 which holds a thermal print head 140. An optical encoder 146 and a mechanical switch 194 provide position feedback of carriage position to the control circuitry. A paper advance motor 256 advances the paper through a worm gear train 256, 262 with position feedback provided by a mechanical switch 280. The printer carriage is a molded plastic runner to which the toothed belt and the thermal print head attaches. A metal clip 340 provides an easily removable mounting for the print head.
    • 包括键盘12,多字符显示器14,热敏打印机22,磁带驱动器118以及通信和控制电路的电子邮件终端10。 带式驱动器和打印机安装件用于模制成基座壳体20的特征。包含通信和控制电路和显示器的印刷电路板28被安装到基座壳体的模制特征中。 键盘从上方插入印刷电路板,并通过底座中的支架在侧面支撑。 盖壳体88与基座壳体的模制特征配合。 带驱动机构包括模制到基座和盖壳体中的盒引导件98和376以及自动补偿磨损和定位公差的弹簧加载电机安装座。 打印机滑架马达184驱动齿形带182以定位保持热打印头140的滑架138.光学编码器146和机械开关194提供滑架位置到控制电路的位置反馈。 纸张提前电动机256通过具有由机械开关280提供的位置反馈的蜗轮系256,262推进纸张。打印机滑架是齿形带和热打印头附接到的模制塑料流道。 金属夹340提供用于打印头的容易移除的安装。