Druckvorrichtung und Tintenausstoß-Zustandsermittlungsverfahren

Details

Veröffentlichungs-Nr.

EP2786867

Aktenzeichen

EP14159375

Anmeldetag

13. März 2014

Veröffentlichung

1. Januar 2020

Erteilung

1. Januar 2020

Rechtsraum

EP

IPC

B41J2/045B41J2/14

Abstract

An embodiment of this invention is directed to determination of the ink discharge state of a printhead capable of accurately determining the discharge state of each nozzle while suppressing increases in the size and cost of an apparatus. In the embodiment, the ink discharge state of a printing apparatus including a printhead including a heater for discharging ink and a temperature sensor, and a driving unit configured to drive the heater is determined as follows. It is controlled to drive the heater by applying the first voltage for discharging ink, and drive the heater by applying the second voltage enough not to discharge the ink. Whether ink is normally discharged or discharge failure has occurred is determined based on information obtained from detected plural temperatures in regard to the application timing of the second voltage.

Anmelder

Firma

Canon Kabushiki Kaisha

Land

🇯🇵 Japan

Fachgebiete