| 摘要 |
Printed image output quality can be guaranteed by using an optical scanner (300) to read image output quality from a printer (200) in real time. In one embodiment, a registration mark (410, 412, 414, 416), preferably comprised of at least one pixel of each color of a multi color print head, printed in the margin (406, 408) can be optically scanned by a scanning device (216, 300) mounted along side the print element (214). In another embodiment, a complete image (504) can be scanned one line at a time pixel by pixel by the optical scanner as an image is painted by a print mechanism.
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