Seiko Epson Corporation

Kazuhiro Adachi

Katsuhiko Maki

Katsumi Okina

Takashi Nakajima

A charge amplifier that converts a charge signal to a voltage signal includes: a first conductive member through which the charge signal propagates; a second conductive member that is provided along at least a portion of the first conductive member; an insulating member provided between the first conductive member and the second conductive member; a potential controlling voltage signal output circuit that is connected to the second conductive member, and is configured to supply a potential controlling voltage signal to the second conductive member; and an integrating circuit that includes an input terminal and an output terminal, the input terminal being connected to the first conductive member, and is configured to output the voltage signal from the output terminal.

Charge amplifier, force sensor, and robot

An integrated circuit device includes a terminal, a switch circuit, an amplifier circuit, a voltage boosting circuit, and a control circuit. The terminal is connected to a driving signal line of a driving circuit that drives an actuator of a liquid droplet ejection head. One end of the switch circuit is connected to the terminal. The amplifier circuit receives an output signal from the other end of the switch circuit, and amplifies an induced voltage of the actuator after the actuator having been driven. The voltage boosting circuit generates a boosted voltage for level-shifting a switching signal of the switch circuit based on the step-up clock signal.

Integrated circuit device and liquid droplet ejection device

An integrated circuit device includes a receiving circuit, a transmission circuit, and common pads common to the receiving circuit and the transmission circuit, which are disposed in such a way that the distance between the receiving circuit and the common pad, and the distance between the transmission circuit and the common pad become shorter, respectively.

Growing community of inventors

Chino, Japan

Kazuhiro Adachi