Method for preventing non-discharge in a liquid jet recorder and a liquid jet recorder
AssigneeCanon Kabushiki Kaisha
InventorsTakehiko Kiyohara, Koji Terasawa, Akira Miyakawa
Life of this patent
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Abstract
In a recorder having a record head which discharges liquid to record dots and which has a discharge energy generating element arranged on a substrate, a liquid discharge port arranged for the discharge energy generating element and a liquid path for supplying the liquid to the liquid discharge path, non-discharge of the liquid in the recorder is prevented by energizing the discharge energy generating element in a non-discharge condition when the recorder is powered on and/or when a predetermined waiting time has elapsed.
Claims18
A method for preventing non-discharge of liquid in a liquid jet recorder, comprising the steps of:
- providing a recorder having a record head for discharging liquid to record dots, said record head having a discharge energy generating element for generating heat when energized arranged on a substrate, a liquid discharge port arranged in relation to the discharge energy generating element to discharge liquid when the energy generating element is energized in a discharge mode and a liquid path for supplying liquid to the liquid discharge port;
- and
- energizing the discharge energy generating element in a non-discharge mode, wherein liquid is not discharged, when the recorder is powered on and/or when the time during which the recorder has not operated in the discharge mode exceeds a predetermined time period.
A liquid jet recorder comprising:
- a record head for discharging liquid to record dots, said record head having a discharge energy generating element for generating heat when energized arranged on a substrate, a liquid discharge port arranged in relation to said discharge energy generating element to discharge liquid when said enegy generating element is energized in a discharge mode and a liquid path for supplying liquid to said liquid discharge port;
- and
- means for energizing said discharge energy generating element in a non-discharge mode, wherein liquid is not discharged, when the recorder is powered on and/or when the time during which the recorder has not operated in the discharge mode exceeds a predetermined time period, thereby to prevent non-discharge of liquid from said discharge port when the recorder is operated in the discharge mode.
Dependencies are inferred from the claim text.