Improved method and circuit for historical control of thermal pr

Details Improved method and circuit for historical control of thermal pr Improved method and circuit for historical control of thermal pr

1992-03-24

1994-12-27

Fuller, Benjamin R.

Agitating

Rubber or heavy plastic working

With specified feed means

B61J 2375, B61J 2365, B61J 237

Patent

active

053771591

ABSTRACT:
A historical control circuit in a thermal printer controls the drive current fed to a resistive heating clement according to the printing of previous dots by that resistive heating clement. The circuit remembers whether or not the heating element printed a certain number of preceding dots and, for each printed dot among those dots, masks an interval in the drive signal. This is done in such a way that if two patterns of previous dots contain unequal numbers of printed dots but generate equal residual temperatures, the drive signal for the pattern with more printed dots is divided into more separate pulses. Adjustments can be made by masking or unmasking a specific interval for a specific pattern. Cutoff of the drive signal may be delayed for patterns in which a certain number of most recent dots were all unprinted.

REFERENCES:
patent: 3975707 (1976-08-01), Ito et al.
patent: 4305080 (1981-12-01), Cunningham et al.

Affiliated with

Also associated with

Rating

Improved method and circuit for historical control of thermal pr does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Improved method and circuit for historical control of thermal pr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Improved method and circuit for historical control of thermal pr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-923541