Inventor

IGAKI MASAHIKO

JP50 patents

⚠️ This page may combine multiple inventors who share the name “IGAKI MASAHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

IGAKI MASAHIKO

CANON KK

Liquid container with identifying means and method for detecting state of mount of liquid container

Optical rotary encoder and motor control apparatus

Liquid container, method for detecting liquid amount in liquid container, and liquid ejection recording apparatus

Sensor using roof mirror/roof prism array scale, and apparatus equipped with the sensor

Reflection scale and displacement measurement apparatus using the same

Method for detecting a reference position and displacement detector using the same

Method and apparatus for measuring displacement by using a diffracted inverted image projected on a diffraction grating

Rotary encoder with scale member and interference of zero and first order diffraction beam

Package for optical semiconductor

Optical encoder

Signal processing method using comparator level adjustment in a displacement measuring device

Encoder with an optical scale and interference of zero and first order diffraction beams

Talbot&#39;s interference type optical encoder

Optical encoder including transparent substrates having formed indicators therein

Optical encoder and apparatus using optical encoder

Optical encoder with discontinuous optical grating

Optical scale formed from mold having fixed and movable platens

Displacement information detecting apparatus

Encoder for detecting relative displacement having first and second scales and a light receiving device

Vibratory sheet feeder which uses phase adjustment to control the sheet feeding speed

Optical encoder for improved detection of the absolute position of an origin point

Optical encoder

Sensor using roof mirror/roof prism array scale, and apparatus equipped with the sensor

Optical encoder

Rotation angle detection apparatus and rotary disk for same

Rotation angle detecting apparatus and its rotary disc

Encoder using a birefringent element and a system including the same

Vibration sheet feeder

Sheet feeding device utilizing vibration waves

Sheet feeding device

Encoder that detects displacement of an object, and lens apparatus and camera having the same

Detection head

Optical encoder capable of detecting absolute position

Optical encoder for measuring displacement

Optical encoder

Sensor signal processor

Electrical division circuit for an optical encoder

Sheet feeding device

Origin detection method for optical encoder

Origin detection method for optical encoder

Optical encoder

Optical encoder

Rotation angle detection apparatus and resin rotary disk for the same

Sensor signal processor

WATANABE IKUO

Rotary encoder and method of assembling the same

TAKAHAMA SHINICHIRO

Displacement detection apparatus and method of correcting error of scale used for displacement detection apparatus

IGAKI MASAHIKO

Optical encoder for obtaining displacement information of object

NEC CORP

Postal information input apparatus and a data display method thereof

ARIMITSU YASUMICHI

Velocity detection apparatus having two detectors

CANON PRECISION INC

Method of manufacturing rotary scale, rotary scale, rotary encoder, driving apparatus, image pickup apparatus and robot apparatus

Talbot's interference type optical encoder