Inkjet Printer and Printing System of Inkjet Printer
AssigneeHitachi Industrial Equipment Systems Co., Ltd.
InventorsTakuya OTOWA, Takashi KAWANO, Tatsunosuke SUZUKI, Dai AKASHI, Shohei TERADA, Masahiko OGINO
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Abstract
A charging phase waveform representing a relationship between a charging phase and an amount of charge on the ink particles is measured, an excitation voltage characteristic representing a relationship between an excitation voltage and a feature amount calculated from the charging phase waveform is measured, an excitation voltage set value allowing printing is calculated based on the excitation voltage characteristic, and the calculated excitation voltage set value is transmitted to a nozzle.
Claims15
An inkjet printer comprising:
- a main body having an ink tank storing ink;
- a print head configured to electrify ink particles generated by applying an excitation voltage to a piezoelectric element exciting the ink supplied from the ink tank to a nozzle to change a trajectory of the ink particles according to an amount of charge on the ink particles, thereby performing printing using the ink particles on a print target;
- and
- a controller configured to control the print head,
- wherein the controller is configured to:
- measure a charging phase waveform representing a relationship between a charging phase and the amount of charge on ink droplets,
- measure an excitation voltage characteristic representing a relationship between the excitation voltage and a feature amount calculated from the charging phase waveform, and
- calculate an excitation voltage set value allowing printing based on the excitation voltage characteristic, and drive the piezoelectric element based on the calculated excitation voltage set value.
An inkjet printer comprising:
- a main body having an ink tank storing ink;
- a print head configured to electrify ink particles generated by applying an excitation voltage to a piezoelectric element exciting the ink supplied from the ink tank to a nozzle to change a trajectory of the ink particles according to an amount of charge on ink droplets, thereby performing printing using the ink particles on a print target;
- and
- a controller configured to control the print head,
- wherein the controller is configured to:
- measure a charging phase waveform representing a relationship between a charging phase and the amount of charge on ink droplets, and
- determine a quality state of the ink from the charging phase waveform.
An inkjet printer comprising:
- a main body having an ink tank storing ink;
- a print head configured to electrify ink particles generated by applying an excitation voltage to a piezoelectric element exciting the ink supplied from the ink tank to a nozzle to change a trajectory of the ink particles according to an amount of charge on the ink particles, thereby performing printing using the ink particles on a print target;
- a controller configured to control the print head;
- and
- a display unit configured to display predetermined information, wherein:
- the controller is configured to:
- measure a charging phase waveform representing a relationship between a charging phase and the amount of charge on the ink particles,
- measure an excitation voltage characteristic representing a relationship between the excitation voltage and a feature amount calculated from the charging phase waveform,
- calculate an excitation voltage set value allowing printing based on the excitation voltage characteristic, and drive the piezoelectric element using the calculated excitation voltage set value,
- control the print head based on the calculated excitation voltage set value, and
- determine a quality state of the ink from the charging phase waveform, and
- the display unit displays a determination result of the quality state of the ink.
Dependencies are inferred from the claim text.