| 摘要 |
<p>Colour ink-jet printer with two removable printing heads (12, 13) at the same time available on the head-holder carriage (10), of which one (12) containing only a black ink for printing the document text parts, and the other (13) containing both a set of three inks of the @ primary @ colours, cyan, magenta and yellow, and, in addition, a "graphic" black ink, physically and chemically compatible with the colour inks, for printing the document parts containing colour figures; in such a manner all the document's black pixels may be printed as "true" black and not as "composite" black, optimizing printing quality cost and speed. <IMAGE></p> |
