| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrophotographic charger with which the miniaturization a charger required for the miniaturization of an electrophotographic device is realized and the length of which is made close to a width necessary for image formation and by which the deterioration of charging potential at both end is eliminated. SOLUTION: In the electrophotographic charger of a corotron type or a scorotron type, a protrusion to impart the potential to both end of a shield inside and an adjusting mechanism to very a projecting quantity by which the protrusion is protruded to the shield inside are provided at both end parts of the shield. Also, the protrusion is held in a state of being insulated from the shield, and potential different from that for the shield may be imparted. Thus, the deterioration of the potential at both end of the charger in the longitudinal direction is prevented, and the deterioration of the potential by charging is eliminated, so that the deterioration of image density at both ends is prevented, and the length as the charger is made close to the maximum width of image formation, so that a device width is suppressed from being increased.
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