| 摘要 |
PROBLEM TO BE SOLVED: To provide an image data-processing apparatus which rotates image data with a small memory capacity at a high speed when a bit map development direction and a paper transfer direction are different from each other. SOLUTION: The apparatus has a page memory in which image data developed to a bit map are stored in units of pages, a bit array memory in which image data present at a predetermined block of the page memory is stored by reading out the data for every bit arrangement aligned in a predetermined line direction, a rotation process control means for taking out image data stored in the bit array memory for every line of a direction different from the bit arrangement direction, a line buffer memory for storing image data taken out by the rotation process control means in a predetermined order, and an image data output means for sequentially outputting image data stored in the line buffer memory.
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