Canon imagePROGRAF GP-4000 - Manual (Page 915)

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Cause
Unsupported JPEG data format.
What to Do
Check the JPEG data.
Printable file formats are as follows.
• Files which conforms to JFIF 1.02 •
◦ Processing method: Basic DCT ◦
◦ Color mode: RGB/GrayScale ◦
◦ Number of colors: 24bit/8bit ◦
◦ Number of pixels: 38400 or less vertically and horizontally ◦
* Does not support some samplings.
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