Variable magnification copying apparatus with margin erase

A variable magnification copying apparatus, comprising:

• a movable electrostatic photosensitive member;
• charging, image exposure, developing and image transfer stations provided around said photosensitive member;
• original supporting means for supporting thereon an original to be scanned in a scanning direction;
• first erasing means for erasing electric charge of a part of said electrostatic photosensitive member, said first erasing means including first and second reflecting members provided on a bottom face of said original supporting means at its respective ends and extending in the direction of original scan;
• a variable magnification optical system for projecting, at a selected magnification, onto said photosensitive member which has been electrically charged, an image of the original supported on said original supporting means and the light emitted from said first erasing means;
• and
• second erasing means for erasing electric charge from a part of said photosensitive member which is adjacent to the area illuminated by the light from said first erasing means, upon the magnification being less than a predetermined magnification.

A variable magnification copying apparatus with charge erasing device, comprising:

• a movable electrostatic photosensitive member;
• charging, image exposure, developing and image transfer stations provided around said photosensitive member;
• original supporting means having a surface for supporting thereon an original to be scanned in a scanning direction;
• first erasing means for easing electric charge of a part of said electrostatic photosensitive member, said first erasing means including light reflecting means, disposed below the original supporting surface, for reflecting light for illuminating said orginal, said first erasing means being operable, when a magnification is selected from a first range of magnification, to erase electric charge from said photosensitive member;
• a variable magnification optical system for projecting, at the selected magnification, onto said photosensitive member which has been electrically charged, an image of the original supported on said original supporting means and the light emitted from said first erasing means;
• and
• second erasing means for erasing electric charge from a part of said photosensitive member which is adjacent to the area illuminated by the light from said first erasing means, said second erasing means being cooperable, when a magnification is selected from a second range of magnification which is smaller than that of the first range, with said first erasing means to erase electric charge from said photosensitive member.