Printing apparatus and method having functions to compensate...

Details Printing apparatus and method having functions to compensate... Printing apparatus and method having functions to compensate...

2007-08-07

2007-08-07

Pham, Hai (Department: 2861)

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

Reexamination Certificate

active

10968276

ABSTRACT:
A print apparatus including a photoconductive drum, a laser scanning unit (LSU) to scan a surface of the photoconductive drum, and an image processing unit to generate and output dot size information corresponding to externally input image data. The dot size information determines sizes of individual dots on an image to be printed, a memory unit to store dot size compensation values related to a scanning distance of laser beams emitted from the LSU to the surface of the photoconductive drum to the LSU. The compensation values change the dot size information. The apparatus further includes a light intensity difference compensation unit to compensate for the dot size information according to the stored compensation values if the dot size information is received, and a pulse width modulation (PWM) unit to generate and output a pulse signal to control the scanning of the laser beams of the LSU according to the compensated dot size information.

REFERENCES:
patent: 4885594 (1989-12-01), Eguchi
patent: 4887225 (1989-12-01), Yao
patent: 5489936 (1996-02-01), Appel et al.
patent: 2001/0028383 (2001-10-01), Mutou et al.
patent: 2002/0036688 (2002-03-01), Saito et al.
patent: 2002/0114012 (2002-08-01), Fujita
patent: 07-032645 (1995-02-01), None
patent: 08-15631 (1996-01-01), None
patent: 08-160338 (1996-06-01), None
patent: 2000-52590 (2000-02-01), None
patent: 1020000067133 (2000-11-01), None

Affiliated with

Also associated with

No associations

Rating

Printing apparatus and method having functions to compensate... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Printing apparatus and method having functions to compensate..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Printing apparatus and method having functions to compensate... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3866278