| 摘要 |
A printing system of the invention sets each pixel group having a predetermined number of multiple pixels, determines a number of dots to be created in the pixel group, and supplies the determined number of dots as number data to a printing device. The printing device converts the received number data into dot data representing a dot on-off state in each pixel and stores only a relevant part of the dot data into a buffer. A head is driven according to the dot data stored in the buffer to print an image. The relevant part of the dot data stored in the buffer regards only pixels that are processed simultaneously by each reciprocating motion of the head for dot creation. This arrangement does not require storage of the dot data with regard to all the pixels, thus desirably attaining high-speed printing of a resulting image while advantageously saving the storage capacity required for the printing device.
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