| 摘要 |
In an inkjet printer, there has been a problem in that a recording medium is charged with electricity due to friction and separation at the time of conveyance of the recording medium, and ink mist is attracted to a portion charged with electricity to have an unexpected pattern to be recorded. In view of this problem, static electricity generated on the recording medium is removed by providing a carriage with an ionizer for generating a positive ion and an ionizer for generating a negative ion and generating the ions at the time of scan of the carriage. Through the arrangement of the ionizers for generating the ions of both polarities, namely, the positive ion and the negative ion, on the carriage, and on/off control on the ions to be generated in each scan, an amount of ions to be supplied per unit area of the recording medium can be made uniform, with the result that the static electricity can be removed efficiently. |
| 主权项 |
1. An inkjet printer for changing, depending on a printing mode, a conveyance amount and a carriage speed of a recording medium to be conveyed intermittently, ejecting ink from a recording head, and recording an image onto the recording medium, the inkjet printer comprising:
the recording head for ejecting the ink to the recording medium from a plurality of nozzles; conveyance means for conveying the recording medium; a carriage having the recording head mounted therein, the carriage being reciprocable in a direction intersecting with a conveyance direction of the recording medium; a platen arranged so as to be opposed to a surface of the recording head on which the plurality of nozzles are arranged, for holding the recording medium being conveyed by the conveyance means; a housing having at least the platen and the carriage accommodated therein; a first ionizer for generating a positive ion; a second ionizer for generating a negative ion; a first drive circuit for driving the first ionizer; a second drive circuit for driving the second ionizer; control means for controlling the first drive circuit and the second drive circuit; and storage means for storing a parameter for supporting an on operation and an off operation of each of the first ionizer and the second ionizer in association with the printing mode, wherein the first drive circuit and the second drive circuit are controlled by the control means independently of each other, and wherein the control means acquires the printing mode of the inkjet printer, acquires the parameter associated with the acquired printing mode from the storage means, and controls, based on the acquired parameter, in each scan of the carriage, the on operation and the off operation of the first ionizer and the second ionizer. |
