Inventor

UMEDA TAKAO

JP41 patents

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

UMEDA TAKAO

HITACHI LTD

Display panel having uniaxially-stretched organic polymer film as the substrate

Bias cleaning system and electrostatic printing apparatus therewith and operating method thereof

Apparatus for displaying image information recorded on a document and any modified data added thereto

Multiplexed driving method for an electrooptical device, and circuit therefor

Duplex reproducing apparatus with device for cooling and conveying fused toner image

Laser marker and method of laser marking

Time-sharing drive liquid crystal optical switch array and optical printer using this optical switch array

Driving method and apparatus for optical printer with liquid-crystal switching element

Liquid crystal display device

Liquid crystal display element with gap controlling material and process for production thereof

Optical apparatus using ferroelectric liquid crystal and switching unit for emitted light

Image forming apparatus capable of preventing the winding on the image carrier

Electrostatic recording apparatus, method of controlling the apparatus, and method of evaluating life of photoconductive member of electrostatic recording apparatus

Information recording system capable of protecting secrecy

Apparatus and method for driving an optical printer having a liquid crystal optical switch

Multiplexed driving method for an optical switching element employing ferroelectric liquid crystal

Electrostatic recording apparatus with electrified cap and managing system thereof

Electrostatic recording apparatus, method of controlling the apparatus, and method of evaluating life of photoconductive member of electrostatic recording apparatus

Driving ferroelectric liquid crystal printers via short circuiting

Printing and binding apparatus

Electrostatic recording apparatus and managing system thereof

Electrostatic recorder and electrostatic latent image measuring instrument

Electrostatic recording apparatus, method of controlling the apparatus, and method of evaluating life of photoconductive member of electrostatic recording apparatus

HITACHI KOKI KK

Developing device for image forming apparatus

Apparatus for printing on both sides of an image printing medium by one process

Apparatus for printing images on both sides of an image printing medium by one process

Development apparatus having a plurality of rolls rotated at particular speeds

Electrostatic printing apparatus having an erase lamp

Electrostatic recording apparatus and electrostatic recording method

Electrostatographic printing machine

High-speed electrophotographic fixing unit

Electrostatic recording control method and electrostatic recording apparatus

Imaging apparatus and method for cleaning transfer/conveyer means

Device for measuring surface potentials at photosensitive body and electrostatic recording apparatus using said device

Image forming apparatus with adjusting device

Paper carrying device in electrostatic recording apparatus

RICOH PRINTING SYS LTD

Method of manufacturing an inkjet head through the anodic bonding of silicon members

Method of manufacturing an inkjet head through the anodic bonding of silicon members

UMEDA TAKAO

Printer utilizing optical switch elements

RICOH CO LTD

Transfer apparatus, method of manufacturing the transfer apparatus and image forming apparatus using the transfer apparatus

RICOH KK

Developer transporting amount controlling member, developing apparatus, imaging apparatus, and method for exchanging developing unit