| 摘要 |
<p>The present invention provides an ink jet printing apparatus and a preliminary ejecting method. In both a full-line and a serial printer, the amount of ink passing through nozzles of print heads (1K, 1C, 1M and 1Y) is sometimes decreased below a normal value before and during actual printing. In the printer of present invention, a preliminary ejecting operation is performed taking the opportunity in which the amount of ink passing through nozzles is decreased below a normal value. Then, the amount of ink passing through nozzles recovers to the normal value at an ink ejection after the preliminary ejecting operation. Since only a small amount of ink is ejected through the nozzles during the preliminary ejection operation, dots formed on a print sheet (3) are not noticeable. Further, it is unnecessary to move the print heads (1K, 1C, 1M, and 1Y) to a home position where an ejection recovering process is executed to remove ink having an increase viscosity. <IMAGE></p> |
