| 摘要 |
PURPOSE:To carry out an image information processing at high speed by making an access an image information memory means in a main scanning direction or a sub-scanning direction and reading a white line check data before reading the image information to require no access to the white line. CONSTITUTION:Before writing an image information, contents of an image information memory memory means and white line check data memory means 13, 15 are reset, and as soon as the image information is recorded in the means 19, a detected black dot is written in the means 13, 15. In an encoding processing thereafter, the contents of the means 13, 15 are read and if a relevant line is the white line, a compression encoding as the white line is done. If a relevant line is not the white line, the image information of one line of the relevant line is read from the means 19. Then, the read one line image information is compressed and encoded and a checking is done on if a sub-scanning address is a final address or not and if it is the final address, a sequential compression encoding processing is finished.
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