Electrophotography – Diagnostics – Consumable
Reexamination Certificate
2006-03-21
2006-03-21
Lee, Susan (Department: 2852)
Electrophotography
Diagnostics
Consumable
C399S313000
Reexamination Certificate
active
07016618
ABSTRACT:
An electrophotographic image forming apparatus and method. The apparatus has a laser scanning unit to generate a laser beam, a photosensitive medium to receive the laser beam and form an electrostatic latent image, a developing roller to attach toner to a surface of the photosensitive medium, a transfer roller to transfer the developed image onto a paper sheet, a charge roller to charge the surface of the photosensitive medium to have a predetermined voltage, a power supply to supply electric power to the transfer roller and the charge roller, a transfer roller resistance detecting unit to detect a resistance of the charge roller, an actual surrounding condition detecting unit to detect an actual surrounding condition of the charge roller, and a controller to detect a surrounding condition from the resistance of the charge roller, compare the detected surrounding condition with the actual surrounding condition, and generate a transfer roller exchange signal if the two surrounding conditions differ.
REFERENCES:
patent: 5784668 (1998-07-01), Hyakutake et al.
patent: 04274272 (1992-09-01), None
patent: 05027614 (1993-02-01), None
patent: 08211691 (1996-08-01), None
Lee Susan
Samsung Electronics Co,. Ltd.
Staas & Halsey , LLP
LandOfFree
Method of detecting lifespan of transfer roller and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of detecting lifespan of transfer roller and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of detecting lifespan of transfer roller and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3536751