Patent ID: 6897887
Filing Date: 2005-05-24
Classification: B41J

Abstract:
1. A heat history control system comprising: a CPU; a memory; a thermal print head having a heat generating element; and a thermal print head interface unit, wherein said memory stores printing data, said CPU reads, from said memory, printing data on a target line to be printed subsequently and printing data on a plurality of immediately preceding lines, performs an arithmetic operation with respect to the read printing data to determine a history pattern, stores the determined history pattern in said memory, reads, from said memory, the history pattern of a history factor which is a dot exerting influence of heat accumulation on a target dot to be printed subsequently, transmits the read history pattern to said thermal print head interface unit, and transmits a history timer value preliminarily allocated to said history factor to said thermal print head interface unit, and said thermal print head interface unit drives said thermal print head based on said history pattern and on said history timer value.