Electrophotographic copying method


PURPOSE:To avoid the change of the electrostatic capacity of a photoreceptor due to the repetitive use and to prevent the fluctuation of the charging potential, by performing the irradiation for destaticization with the 1st peak wavelength light and then with the 2nd peak wavelength light of different wavelength and at the same time superposing both lights on each other at least at a part of them. CONSTITUTION:The 1st and 2nd destaticizers 8 and 9 are provided at the positions near the circumference surface of a photoreceptor drum 1 provided between a cleaning device 7 and a charger 2. The destaticizer 8 emits the light having a >=6,000Angstrom peak wavelength to give an exposure over the entire region in the width direction of the drum 1 with a proper width secured in the circumference direction. The 2nd destaticizer 9 emits the light having a <=6,000Angstrom peak wavelength to perform an exposure like the destaticizer 8. These two lights superpose at the end part in the width direction which is the circumferential direction of the drum 1.




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Patent Citations (1)

    Publication numberPublication dateAssigneeTitle
    JP-S547347-AJanuary 20, 1979Siemens AgElectronic copy apparatus

NO-Patent Citations (0)


Cited By (5)

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    JP-2014182182-ASeptember 29, 2014Toshiba Corp, 株式会社東芝, Toshiba Tec Corp, 東芝テック株式会社画像形成装置及び像担持体の除電方法
    JP-H0475517-B2December 01, 1992Mita Industrial Co Ltd
    JP-S603690-AJanuary 10, 1985Mita Ind Co LtdElectrophotographic method
    JP-S6093475-AMay 25, 1985Minolta Camera Co LtdCopying method
    JP-S6138969-AFebruary 25, 1986Mita Ind Co LtdFormation of picture