| 摘要 |
PURPOSE:To obtain pictures having good tonal property and a comparatively high resolution by forming a heating element of plural heating units provided between a pair of electrodes. CONSTITUTION:Two heating units 8a and 8b are connected to a pair of electrodes 7a and 7b to form a heating element 9. Plural heating elements 9 are arranged in line to make up a thermal recording head. Using such a thermal recording head, when a picture element is represented by four dots and area tone is made, the area tone is made by varying the number of recording dots from left to right. Since one dot corresponding to one heating element 9 is recording dividedly to the number of the heating units 8a and 8b of the heating element 9, or into two fine dots, the step difference of dots is not outstanding and therefore an apparently very fine smooth recording picture can be obtained. |
