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发明授权
US4403851A Electrostatic copying machine comprising improved arrangement of operating units 失效
静电复印机包括改进的操作单元布置

Electrostatic copying machine comprising improved arrangement of operating units
摘要：
A cover (24) is hinged to the top of a housing (22) in such a manner as to be rockable from a closed position and an open position. A platen (23) is provided on top of the cover (24) for supporting an original document (26). A movable charging and scanning unit (32), endless photoconductive belt (27), cleaning unit (61) and fixing unit (54) are provided in the cover (24). A developing unit (39), sheet cassette (44), (46) and feed units and a transfer unit (41) are provided in the housing (22). The various units are easily detachable from the bottom of the cover (24) or the top of the housing (22), thus facilitating easy maintenance and removal of jammed sheets. The overall arrangement provides a substantial reduction in the size of the copying machine (21), especially in the vertical dimension. The apparatus is arranged and controlled in such a manner that for a multiple copying operation, the belt (27) is alternatingly stopped while the charging and scanning unit (32) forms an electrostatic image thereon and then driven for one half revolution. For a single copying operation, the belt (27) is stopped while the charging and scanning unit (32) forms an electrostatic image thereon and then driven for one revolution.
摘要（中）：

盖（24）以从闭合位置和打开位置摆动的方式铰接到壳体（22）的顶部。 在盖（24）的顶部设置有用于支撑原稿（26）的压板（23）。 在盖（24）上设置有可移动的充电和扫描单元（32），环形感光带（27），清洁单元（61）和固定单元（54）。 显影单元（39），薄片盒（44），（46）和进料单元以及转印单元（41）设置在壳体（22）中。 各个单元可以从盖（24）的底部或壳体（22）的顶部容易地拆卸，从而便于维护和去除卡住的片材。 整体布置大大减小了复印机（21）的尺寸，特别是在垂直尺寸上。 该装置的布置和控制方式是，对于多次复印操作，带（27）交替地停止，同时充电和扫描单元（32）在其上形成静电图像，然后驱动半圈。 对于单次复印操作，带（27）停止，而充电和扫描单元（32）在其上形成静电图像，然后驱动一圈。

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