White signal transmission enable flat-bed scanning type facsimile device
专利汇可以提供White signal transmission enable flat-bed scanning type facsimile device专利检索，专利查询，专利分析的服务。并且PURPOSE: To ensure an easy transmission for the white signal of the flat-bed scanning facsimile by providing the pseudo white area less than one main scan length to the beam optical path for scanning and thus extracting only the signals of the pseudo white area.
CONSTITUTION: Laser beam 18 generated from laser tube 17 performs scanning among beams 20∼22 via scanning mirror 19. Then the flat-bed scanning is given to transmission original 24 laid flat onto transmission original table 23, and the gradation information of original 24 is converted into the electric signals via linear sensor 25 using the PIN photo diode. While secondary scan feed mechanism 26 shifts table 23 toward arror 28 for the secondary scanning. Mirror 19 is driven as shown by arrow 27 to give the reciprocal motion to beam 21. Accordingly, if table 23 is set so that beam 18 may cross pseudo white 32 for scanning at the transmission time of the white signals, V signal underwent the photoelectric conversion for time T which is decided by the pseudo white setting position and length is generated. The position and the length for generation of signal V is decided by the setting position and length of the pseudo white plus one main scanning time.
COPYRIGHT: (C)1980,JPO&Japio，下面是White signal transmission enable flat-bed scanning type facsimile device专利的具体信息内容。
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