Printing apparatus and printing method
AssigneeCanon Kabushiki Kaisha
InventorsYuhei Oikawa, Taku Yokozawa, Kazuo Suzuki, Satoshi Hayashi
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Abstract
There is an object of providing a printing apparatus which can restrict a variation in ejection characteristic of an ink droplet due to a temperature change of a printing head to restrict degradation in an image. The printing apparatus adjusts temperatures of the print head to first and second temperature so as to measure ejection characteristics of the print head at the first and second temperature. Then, a driving condition is generated based on the measured ejection characteristics and a printing is performed based on the measured ejection characteristics.
Claims5
An ink jet printing apparatus comprising:
- a printing unit configured to print an image on a print medium by moving a printing head relative to the print medium and driving the printing head based on a given driving condition so as to eject ink droplets;
- a temperature adjusting unit configured to adjust a temperature of the print head to a target temperature;
- a characteristic measuring unit configured to measure an ejection characteristic of the ink droplet ejected from the printing head;
- and
- a driving condition generating unit configured to generate a driving condition for the print head based on the ejection characteristic of the print head measured by the characteristic measuring unit at first temperature and second temperature different therefrom when adjusting temperature of the print head to the first and second temperature.
An ink jet printing method comprising the steps of:
- printing an image on a print medium by moving a printing head relative to the print medium and driving the printing head based on a given driving condition so as to eject ink droplets;
- adjusting temperature of the print head to a target temperature;
- and
- generating a driving condition for the printing head based on the ejection characteristic of the printing head measured by the characteristic measuring unit at first temperature and second temperature different therefrom when adjusting the temperature of the print head to the first and second temperature.
Dependencies are inferred from the claim text.