Image-forming device that eliminates noise from a...

Details Image-forming device that eliminates noise from a... Image-forming device that eliminates noise from a...

2007-10-02

2007-10-02

Ngo, Hoang (Department: 2852)

Electrophotography

Control of electrophotography process

Control of fixing

C399S044000, C399S037000

Reexamination Certificate

active

11139598

ABSTRACT:
A laser printer capable of controlling the operation of a fixing heater to heat a roller, including an energizing circuit for energizing a heater, a temperature detecting circuit such as thermistors, a noise canceling circuit, and a control circuit for controlling the energizing circuit and the heater. After receiving a voltage indicating an abnormal temperature of the heater over a prescribed length of time duration, the noise canceling circuit is configured to transmit a LOW level voltage to a latch circuit as an abnormality signal. The control circuit suspends the energization of the heater in response to the abnormality signal.

REFERENCES:
patent: 5942882 (1999-08-01), Ohta
patent: 6-005434 (1994-01-01), None
patent: 8-262679 (1996-10-01), None
patent: 10-307514 (1998-11-01), None
patent: 11-073058 (1999-03-01), None

Affiliated with

Also associated with

Rating

Image-forming device that eliminates noise from a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image-forming device that eliminates noise from a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image-forming device that eliminates noise from a... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3829700