Photocopying – Contact printing – Light boxes
Patent
1992-04-14
1994-03-29
Grimley, A. T.
Photocopying
Contact printing
Light boxes
118657, 355211, 355261, G03G 1300
Patent
active
052989496
ABSTRACT:
An electrophotographic apparatus has a photoreceptor drum supported for rotation in one direction sequentially past a plurality of processing stations, a corona charger for electrostatically charging the photoreceptor drum, a developer hopper accommodating therein a mass of developing material used to form a visible toner image and a transfer charger for transferring the toner image onto a recording paper. The developer hopper has its bottom portion formed with an opening open so as to accommodate a portion of the photoreceptor drum, so that the developing material can be electrostatically deposited on the photoreceptor drum, including both non-image and image areas, to form a toner layer. The apparatus also includes an electrode member operable to electrostatically remove a portion of the toner layer covering the non-image area, thereby leaving the remaining portion of the toner layer in the image area to form the visible toner image.
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Terada Hiroshi
Yamamoto Hajime
Dang T. A.
Grimley A. T.
Matsushita Electric - Industrial Co., Ltd.
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