Control method for thermal recording

A recording control method for thermal recording which records image data on a sheet of recording paper with a line-type thermal head which is operativly divided into the number of N, which comprises the steps of;

• setting a divisional number Y at "1" and increasing a block counting value by [+1];
• judging whether or not a block counting value X is smaller than a divisional number N;
• if the block counting value is smaller than the divisional number N, the block counting value is added to a value A of recording dots in an x-th block;
• making the sum or [Z+A] to a counted value of the recording dots;
• judging whether or not the counted value Z is less than a predetermined value;
• repeating above operations if the counted value Z is smaller than said predetermined value;
• increasing said divisional number Y by [+1], renewing the number of said recording dots to the value A and repeating above operations if the counted value Z is larger than said predetermined value;
• computing amount of conveyance of said recording paper if said block counting value X is larger than said divisional number N;
• and
• determining time for conveying said recording paper and the number of said recording blocks.