Inventor

MIYAKAWA NOBUHIRO

JP65 patents

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

MIYAKAWA NOBUHIRO

MITA INDUSTRIAL CO LTD

Azoic pigments having a silica core

Electrophotographic apparatus comprising photosensitive layer of amorphous silicon type photoconductor

Heat-sensitive black recording element

Toner for electrophotography comprising azoic pigment having silica core

Electrically conductive composition for electro-responsive recording materials

Electrophotographic process using transfer-type one-component magnetic developer

Heat-sensitive color-forming recording material and process for preparation thereof

One-component type magnetic developer for development and transfer of positively charged images

Thermosensitive recording material

Electrostatic photographic copying process

Developer for developing electrostatic latent images

Conductive substrate for electrosensitive recording material

Solid conducting agent

Method for developing electrostatic images using magnetic brush

Two-component electrophotographic developer with magnetic carrier

Photosensitive material for electrophotography

Two-component type magnetic developer

Developer containing magnetic and non-magnetic toner

Latent electrostatic image developing device

One-component type red color magnetic developer

One-component type developer

Photosensitive material for electrophotography

Trisazo electrophotographic photosensitive material

Electric recording process

One-component magnetic dry developer comprises triiron tetroxide having specified coercive force and vinyl aromatic polymer and process of use

Color developer for leuco pigment and recording material comprising same

Heat-sensitive recording element

Composite magnetic developer

Photographic process

Electric recording material and electric recording process

Alternating current electrostatic recording process

Copying machine having reduced image memory

Photosensitive material for electrophotography containing photosensitive layer incorporating pentakisazo pigment

One-component type magnetic developer comprises particles of cubic magnetite

Electrophotographic photosensitive material

SEIKO EPSON CORP

Non-magnetic single-component toner, method of preparing the same, and image forming apparatus using the same

Non-magnetic single-component toner, method of preparing the same, and image forming apparatus using the same

Toner, developing device and developing method using the same

Toner and image forming apparatus using the same

Image forming apparatus with improved transfer efficiency

Image forming apparatus employing work function relationships

Image-forming apparatus employing work function relationships

Image forming apparatus employing work function relationships

Color image forming apparatus and method for stabilizing liquid developer viscosity

Liquid developer

Liquid developer and image forming apparatus using the same

Toner, developing device and developing method using the same

Negatively chargeable spherical toner, color image forming apparatus, and process for producing negatively chargeable spherical toner

Toner and image-forming apparatus using the toner

Imaging system