18919918. LIQUID EJECTION APPARATUS (CANON KABUSHIKI KAISHA)
LIQUID EJECTION APPARATUS
Organization Name
Inventor(s)
TSUBASA Funabashi of Kanagawa JP
LIQUID EJECTION APPARATUS
This abstract first appeared for US patent application 18919918 titled 'LIQUID EJECTION APPARATUS
Original Abstract Submitted
Provided is a liquid ejection apparatus, including: a head; a plurality of removal units for removing foreign substances; and a control unit. The head is constituted of a circuit substrate and a passage forming member which are joined, a chamber is disposed in the joined portion, a liquid supply port is disposed on the circuit substrate, nozzles to eject the liquid inside the chamber are disposed in the passage forming member, and a plurality of driving elements and a plurality of temperature sensors are disposed on the circuit substrate. The control unit selects the removal unit by analyzing a waveform of a signal from the temperature sensor, a protective film is disposed between the driving element and the chamber, and the removal unit removes the burnt deposit, which is a foreign substance, by applying voltage to the protective film and eluting the protective film thereby.