Grayscale printing method of thermal printer
A thermal printer and grayscale technology, applied in the temperature recording method, etc., can solve problems such as inaccurate empirical formulas, unsatisfactory grayscale printing effects, etc., and achieve the effect of fine details
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[0039] In the prior art, the number of heating times required for a grayscale value of 0 to 255 and the proportional coefficient of each heating time are shown in Table 1 below:
[0040] Table 1
[0041]
[0042]
[0043]
[0044]
[0045]
[0046]
[0047]
[0048] In the present invention, the number of heating times required for the grayscale value 0 to 31 and the proportional coefficient of each heating time are shown in Table 2 below:
[0049] Table 2
[0050]
[0051]In the process of printing grayscale patterns on thermal printers, it is assumed that a certain grayscale bit Figure 1 There are 8 pixels in the dot row, and their gray values are shown in Table 3.
[0052] table 3
[0053] pixel number 0 1 2 3 4 5 6 7 grayscale value 45 166 95 107 159 0 73 255
[0054] Follow the steps below to print this line in 5-level grayscale:
[0055] Divide the gray value m of each pixel in a row by 2 3 , and then de...
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