A method for improving the quality of the printing with a thermal transfer print head and arrangement for carrying out the method

摘要

A method for improving the quality of the pressure with a thermal transfer print head and arrangement for carrying out the method, permit a calculation of an energy value according to different kinds (steps 10, 20) to perform when a dot is to be printed, values based on past and the environment - information via the activation of the relevant and the adjacent heating elements of the thermal transfer print on the one hand, in a manner known per se and can lead, on the other hand, in step (30) in front of the printing operation by a calculation of energy values, with which the heating elements on the ends of the row of heating elements of the high-resolution thermal transfer print phases into heat also be controlled, if at the edges of the externally of the bar code image dot to be printed is provided no. Additionally, also the heating elements, which is not in the two edge regions of the heating elements row are located, for a limited period of time, is driven, the aforementioned time period the printing of a bar code image immediately precedes. A microprocessor calculates the energy values and is connected with a pixel energy storage, to one of the data in step (40) in a print data controller and transmitted in step (50) is converted into a pressure pulse duration are.