| 摘要 |
<p>The thermal printing head comprises a row of electrically resistant heating elements (9) and electronic means (7) for controlling their sequential connection to an electrical current supply source (10) comprising, for each heating element, a count-down register which, before the printing of each row of dots, is loaded with the value corresponding to the time span, during which the connection of the corresponding heating element (9) will be maintained, in response to a printing authorization common to all the elements. According to the invention, it comprises means (19) for the real-time measurement of the resistance of each heating element, which are connected to a device (20) for regulating the energy supplied to the corresponding element. <IMAGE></p> |
