Photocopying – Contact printing – Light boxes
Patent
1993-05-19
1994-11-22
Grimley, A. T.
Photocopying
Contact printing
Light boxes
355210, 361221, G03G 1502
Patent
active
053673646
ABSTRACT:
A spring-contact device which prevents the primary charge roller of a toner cartridge assembly from shifting back and forth and aids in providing the roller with an electrostatic charge. The device is made from a thin piece of electrically conductive material and comprises a long portion and a short portion bent from the long portion at an approximately right angle. The short portion has a hole in it for fitting over the hub on the charge roller mount in the toner cartridge assembly. The long portion presses against an endpost of the roller, maintaining a spring-contact. A spring-contact device is placed at each end of the charge roller such that the roller is held between the long portions of the spring-contact device by opposing forces. On the side of the cartridge assembly through which the charge is provided, the short portion of the spring-contact device is pressed against the conductive plate on the charge roller mount, thereby providing a charge to the roller from the conductive plate to the endpost of the roller. On the side of the cartridge assembly opposite the side through which the charge is provided, the spring-contact device is coated with an insulated material.
REFERENCES:
patent: 4468073 (1984-08-01), Machcinski
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patent: 5283619 (1994-02-01), Nomura et al.
Graber Jeffrey B.
Michlin Steven B.
Grimley A. T.
Michlin Steven B.
Ramirez Nestor R.
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