| 摘要 |
PROBLEM TO BE SOLVED: To reduce the size of a table used for half-tone processing. SOLUTION: An image processing ASIC 155 of a printer 100 performs half-tone processing on respective pixels constituting image data by referring to an encode table ET, a predecode table DT1, and a postdecode table DT2 stored in a RAM 152 and an order value table one by one in order to determine an arrangement of dots formed on a printing medium. The encode table ET contains encode values and gradation values made to correspond to each other by block numbers, and each gradation value is presented by a difference between adjacent gradation values. COPYRIGHT: (C)2009,JPO&INPIT
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