| 摘要 |
PROBLEM TO BE SOLVED: To provide a compressor which confirms whether effective image data are included in an image to be compressed by one band unit or by an arbitrary number of band units, and also to provide an image forming apparatus. SOLUTION: The image forming apparatus includes: the compressor 104 for performing compression to complete the image data of one band in the image by each band, and writing a white image detection result in compression with respect to a descriptor with a compression data completion code at a code side written therein; and a writing DMAC 105 having a write-back generation module 1051 for writing a write-back flag in the descriptor. COPYRIGHT: (C)2008,JPO&INPIT
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