Patent ID: 6503006
Filing Date: 2003-01-07
Classification: B41J

Abstract:
A method of printing symbols comprising the steps of:(a) powering selected heating elements from a plurality of heating elements in thermal printhead such that a row of dots is printed; (b) saving the speed of printing for said row of dots in step (a) into a first variable in an electronic memory; (c) setting a second variable in said electronic memory to 1, and a third variable in memory to a predetermined value representing the number of dot rows in a first group of dot rows to be printed; (d) calculating a maximum dot line utilization value for said first group of dot rows and storing said maximum dot line utilization value in a fourth variable in said electronic memory; (e) calculating a target speed for the next print line to be printed based on the dot utilization value stored in said fourth variable; and (f) adjusting speed of printing to said target speed as determined by step (e).