18888658. ELECTRIC CIRCUIT BOARD AND LIQUID EJECTION HEAD (CANON KABUSHIKI KAISHA)

ELECTRIC CIRCUIT BOARD AND LIQUID EJECTION HEAD

Organization Name

CANON KABUSHIKI KAISHA

Inventor(s)

SHIN Ishimatsu of Kanagawa JP

YUJI Tamaru of Tokyo JP

YOSUKE Takagi of Kanagawa JP

SHINICHIRO Matsumoto of Kanagawa JP

HISAO Okita of Kanagawa JP

TOMOO Iizumi of Kanagawa JP

KIMIYUKI Hayasaki of Kanagawa JP

CHIAKI Muraoka of Saitama JP

TAKUHIRO Ogushi of Kanagawa JP

KENJIRO Watanabe of Tokyo JP

ELECTRIC CIRCUIT BOARD AND LIQUID EJECTION HEAD

This abstract first appeared for US patent application 18888658 titled 'ELECTRIC CIRCUIT BOARD AND LIQUID EJECTION HEAD

Original Abstract Submitted

An electric circuit board includes: a booster circuit configured to generate a pump drive signal by boosting a pump reference signal having a reference voltage based on a booster circuit drive signal; a first wiring for transmitting the pump drive signal; a second wiring for transmitting the pump reference signal; a third wiring for transmitting the booster circuit drive signal; and a plurality of fourth wirings for transmitting signals related to an ejection element configured to eject a liquid, wherein the second wiring and the third wiring each have a portion disposed at a position spaced apart from the first wiring by a distance shorter than a protection distance, and have a short circuit protection circuit connected thereto, and the plurality of fourth wirings include one or more first type wirings disposed at a position spaced apart from the first wiring by a distance longer than the protection distance.