| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a liquid ejector which can obtain preferred dots by preventing a striking interference of the dots formed to overlap each other and can also achieve high-speed striking of droplets, and to provide a control method of droplet striking. <P>SOLUTION: When a dot array is formed along a recording paper transfer direction (sub scanning direction) by passing an organic pigment solution dissolved in a water medium as a laminar flow in a passage, and striking liquid droplets including organic pigment fine particles produced in a process of changing a hydrogen ion exponent of the solution in the laminar flow process, in continuous striking of the droplets, a flight direction of ink is deflected to shift a striking position of ink droplets in the recording paper transfer direction by an integral multiple of a pitch between the dots of the dot array. The ink droplets are struck immediately below nozzles at a timing t1, shifted to the upstream side by two dots at a timing t2, and shifted to the downstream side by one dot at a timing t3. Adjacent dots are formed for the first time when the ink droplets are shifted to the upstream side by one dot at a timing t4. <P>COPYRIGHT: (C)2007,JPO&INPIT |
