Photocopying – Including fiber optics
Patent
1987-11-27
1988-12-27
Moses, R. L.
Photocopying
Including fiber optics
355 3DD, 355 3SH, G03G 1500
Patent
active
047944200
ABSTRACT:
A device for driving a rotary body which is required to make contact with another rotary body with an even pressure distribution along its length, e.g. a register roller installed in an electrophotographic machine for feeding a paper sheet, a developing roller applicable to a contact type developing system, or a doctor roller of a developing apparatus. A developing roller, or one of the rotary bodies, is movable in a single limited direction toward and away from a photoconductive element, or the other rotary body, which is fixed in place. A drive gear is meshed with a driven gear which is mounted on one end of a shaft of the developing roller, thereby transmitting torque to the developing roller. The drive gear is located in such a position that an angle between the direction of movement of the developing roller and a line extending through the axes of the drive and driven gears is defined upstream of that direction of movement with respect to the direction of rotation of the developing roller and substantially equal to the pressure angle between the drive and driven gears. The force imparted from the drive gear to the driven gear acts in a direction substantially perpendicular to the direction of movement of the developing roller.
REFERENCES:
patent: 4600929 (1986-07-01), Cordona et al.
patent: 4743938 (1988-05-01), Ohno
Nagatsuna Shinji
Ohashi Michihito
Saito Kinzi
Moses R. L.
Ricoh & Company, Ltd.
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