| 摘要 |
PURPOSE: To lessen density irregularities in a direction of heat-generating elements and in a transfer direction far recording papers by setting the length of the heat generating element of a heat-sensitive recording head in a direction orthogonal to arm arranging direction of the elements to be 1.5 times or more a predetermined pitch of a recording medium transfer means. CONSTITUTION: A heat-generating element 35 corresponding to one dot is formed of a resistance thin film of a length of 1 held between a common electrode 37 and an individual electrode 38 both formed of a conductive thin film 34. One heat-generating element 35 is separated from tone adjacent heat,-generating element by an inter slit 39. At tone same time, the }neat-generating element 35 is separated to two partial heat-generating elements 35a, 35b of the same width Wo in parallel by a central slit 40 set at the center in a widthwise direction of tone heat-generating element. A width W2 of the inter slit 39 is equal to a width W1 of the central slit 40, i.e., 25μm or smaller. This width is essential so as root to generate white stripes when an image is recorded. The length of the heat-generating element is set to be not smaller than 1.5 times a paper transfer pitch, so that density irregularities in the transfer direction of papers can be restricted.
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