| 摘要 |
PROBLEM TO BE SOLVED: To prevent the drying of ink near the orifice of an ink jet head not in use and prevent an injection error of ink by forming a plurality of ink jet heads in a manner of being able to move along their respective shafts and providing a connection member for connecting them in a separable manner. SOLUTION: In an ink jet printer wherein a B head 1 and a YMC head 2 are fixed to a carriage 5, if received print data are a monochromatic document text data, as only the B head 1 is used, the B head 1 and the YMC head 2 are separated by canceling the energization of an electromagnet 21. And then after a prescribed amount of ink is sucked, a cap 9 for the B head 1 is removed by moving a conduit 13 in the direction of an arrow B'. And then dust adhering near the orifice of the B head 1 is removed by moving the sweeping blade 12 in the direction of an arrow B and the carriage 5 in the direction of an arrow A. After that printing is performed while moving the carriage in the direction of arrows A-A'. |
