Keiji Takeda

Function separated type electrophotographic light-sensitive members and process for production thereof

Light-sensitive image recording material and dry process for recording light image using the same

Heat sensitive color forming and heat sensitive electrical conductivity increasing composition and heat sensitive image recording sheet using the same

Heat developable light-sensitive diazotype materials and process of use

Processes for preparing photoconductive elements and electrophotosensitive materials

Photographic material containing TiO2, soluble Cu(II) salt, and soluble silver salt and the use thereof in physical development

Dry photographic copying method for producing Te images

Metal image formation process

Heat-developable photosensitive materials

Waermeentwickelbare, lichtempfindliche materialien