Inventor

HAGIWARA YOSHIHIRO

JP56 patents

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

HAGIWARA YOSHIHIRO

NEC CORP

Electrostatic ink jet recording device having a stirring system

Test method and system for uninterruptible power supply

Ink supply mechanism

Ink cartridge capable of preventing leak of ink

Electrostatic ink jet recording apparatus that adjusts the amount of heat based on the type of recording material

Gap adjusting device for a print head used in an ink jet recording apparatus and gap adjusting method

Ink jet recording head having ink stirring electrodes for dispersing ink

Toner quantity detection and replenishment system for an electrostatic ink jet recording apparatus

Electrostatic ink jet recorder

Toner concentration measuring method, toner concentration measuring apparatus and image forming apparatus employing the same

Inkjet recording apparatus having specific driving circuitry for driving electrophoresis electrodes

Toner content monitoring system for use in a recording head for ink-jet printer

Electrostatic ink jet recording apparatus ejecting ink using different electric potentials applied to different electrodes

Electrostatic ink jet record head having a control electrode for equalizing the electric field of an ink chamber an ink jet recorder using same

Ink jet print head having a projecting ejection electrode

Ink-jet printer to use ink containing pigment particles

Ink jet type head for pigment type ink with different pulses applied to electrodes

Inkjet recording apparatus having gate electrodes and print head thereof

Electrostatic ink jet printer

Electrostatic ink jet recording head having electrophoretic electrode and gravity ink reservoir

Ink-jet recording device for suppressing excess electrophoretic accumulation of charged particles

Simple electrostatic ink jet printing head having low cost

Injet recording apparatus

Electrostatic ink jet recorder having ejection electrodes and auxiliary electrodes divided into groups

Ink jet recording device

Precision ejection ink-jet printing apparatus

Method of producing a record head for an electrostatic ink jet recorder

Method and apparatus for controlling inkjet ejection electrodes by varying the electrodes potentials

Electrostatic ink-jet recording head

Method of manufacturing an electrostatic ink jet printing head with pointed ink ejectors

Electrostatic ink jet recording head using control and recording electrodes for ejecting toner particles

Ink-jet recording apparatus with improved ink density formation

Inkjet recording apparatus having a minimum number of ejection electrode driving circuits and method for driving same

Electrostatic ink jet recording apparatus preventing precipitation of charged particulate material in ink liquid

Ink jet recording head having an ink stream path

Electrostatic ink jet recording device

Ink jet type head assembly

Ink-jet printer using ink containing pigment particles

Electrostatic inkjet head having an ink drain for draining ink from a slit

Control system for applying biasing and recording signals to recording electrodes of an electrostatic ink jet recording device

Electrostatic ink-jet recording head having a head chip provided with groove and flange portions

Apparatus and method for ink-jet printing using extending ink-ejecting bars and method of manufacturing of the apparatus

Electrostatic ink-jet printing head having projections extending out of an ink chamber

Inkjet recording apparatus

FUJI XEROX CO LTD

Fluid jetting device, fluid jetting head, and fluid jetting apparatus

Oscillating liquid level measuring apparatus

Toner concentration measuring apparatus

Device for adjusting a developing solution for an electrostatic wet-type electrophotographic printer

COCOMO MB COMMUNICATIONS INC

Method and apparatus for improving antenna efficiency

SONY CORP

Rear projection display apparatus and transmission type screen