发明名称 |
Electrophotographic copying machine having a masking device for different copy sheet formats |
摘要 |
Electrophotographic copying machine comprising a discharge device for discharging the area of the movable photoconductive element which exceeds the area of the copy-sheet residing in the machine. The discharge device comprises a lamp and a mask interposed between the lamp and the photoconductive surface, the mask has a plurality of slots, each slot being associated to a copy-sheet format; each slot comprises a first portion for discharging the margin zones of the photoconductive element, which zones has a length equal to the difference between the width of the photoconductive element and a dimension of the copy-sheet format selected; and a second portion for discharging the entire width of the photoconductive element, the second portion is positioned in front of the lamp after that a length of the photoconductive element equal to the other dimension of the format has been moved in front of the discharge device.
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申请公布号 |
US4129378(A) |
申请公布日期 |
1978.12.12 |
申请号 |
US19770757537 |
申请日期 |
1977.01.07 |
申请人 |
ING. C. OLIVETTI & C., S.P.A. |
发明人 |
RATTIN, LUCIANO;GUELFO, ROBERTO |
分类号 |
G03G15/00;G03G15/04;G03G15/043;G03G15/047;G03G15/36;(IPC1-7):G03G15/00 |
主分类号 |
G03G15/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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