Konishiroku Photo Industry Co., Ltd.

Hokushin Industries, Inc.

Masakazu Kokiso

Noriyoshi Tarumi

Akihiko Tamura

Junichi Koiso

Fumio Iwai

Hiroshi Tsuchiya

Tamio Ogino

Koichi Nagayasu

Ryubun Seimiya

Toshio Muramatsu

Hiroaki Ohta

Masaru Inoue

An intermediate transfer member for transferring a toner image on a carrier which comprises an addition polymerization type silicone rubber. The intermediate transfer member has a marked characteristics of less exudating components such as unreacted components or residual components as compared with prior art products.

Intermediate transfer member for transferring toner image on a carrier

A novel photosensitive composition including a photoconductive cadmium sulfide-group compound and a water-soluble prepolymer capable of forming a network structure by cross-linking, the composition being applied as a photosensitive layer of a photosensitive article for electrophotography having a conductive substrate.

Photosensitive composition for electrophotography

An improved method of producing a thin-walled endless belt by centrifugal molding, which comprises introducing a liquid curable silicone rubber dissolved in a solvent into a rotating cylindrical mold, hardening said liquid curable silicone rubber to form a mold surface on the inner surface of said cylindrical mold, and thereafter introducing a thermosetting resin dissolved in a volatile solvent onto said mold surface to form the endless belt.

Method of producing thin-walled endless belt

A photoconductive material of a fine crystal of a cadmium sulfide-type photoconductive compound, on the surface of the crystal a film-forming compound having a dehydrating function such as an isocyanate compound is deposited. The photoconductive material is employed for forming an electrophotographic material or a photo-cell.

Cadmium sulfide-type photoconductor with an isocyanate film

An electrophotography photosensitive plate having an interfacelayer between a substrate and a photosensitive layer. Said interfacelayer comprises the mono- or co-polymer of the unit components represented by the general formula: ##STR1## In said formula R is a hydrogen atom or a methyl group; A is ##STR2## wherein R.sub.1, R.sub.2 and R.sub.3 each are lower alkyl, phenyl or benzyl groups, and further R.sub.2 and R.sub.3 may be taken together to form a ring, or ##STR3## wherein B is a nonmetallic atom selected from the group consisting of carbon, nitrogen and sulfur atoms, necessary to form a 5-6 membered heterocycle nucleus with the --N.sup.+ .dbd.C--; X.sup.- is an anion; and Y is a substituted or unsubstituted alkylene group.

Electrophotographic plate containing quaternary ammonium salt polymer

A drum cleaning apparatus for an electrophotographic copying machine includes a toner image forming drum rotatable about a horizontal axis, a blade for scraping off toner particles deposited on the cylindrical outer surface of the drum, an inclined toner particle guide plate having an upper edge bearing on the outer surface of the drum upstream of the scraping blade as viewed in the rotating direction of the drum and a lower edge positioned at an opening of a toner collecting container, a holding structure for supporting the toner guide plate and mounted swingably on a shaft with play, the shaft extending in parallel with the axis of said drum. Feeble and periodical shocks are applied to the toner guide plate by way of the supporting shaft thereby to promote the sliding down of the toner particles on and along the guide plate into the collecting container to prevent accumulation of the particles on the plate.

Drum cleaning apparatus for electrophotographic copying machine

A drum cleaning blade for a image transfer type of copying machine which has a rotatable drum provided thereon with a photo-sensitive cylindrical layer in which an electrostatic latent image of an original to be copied is produced and developed by a toner powder. The blade comprises a main sheet-like center portion having a straight lower edge and a pair of side portions from which triangular projections extend forwardly, respectively. The inner edges of the triangular projections are slanted outwardly. The side portions in which the triangular projections are formed are separated from the main portion through cuts. The lower edge as well as the slanted inner edges of the triangular projections are caused to bear on the outer cylindrical surface of the drum thereby to scrape off the toner particles remaining as deposited on the drum surface after the transfer processing of the toner image to a transfer sheet. The inner slanted edges of the triangular projections serve to prevent the toner particles as scraped off from being scattered laterally outwardly from the drum.

Drum cleaning blade for image transfer type electrophotographic copying

For removing toner from a photosensitive drum roll for electrophotography, a blade contacts the surface of the drum roll at a location where said surface is moving upwardly, to scrape residual toner therefrom. A resilient transfer roll, spaced below the blade, carries away toner that falls from the drum roll. The transfer roll is directly rotatably driven by the drum roll. One of the rolls has enlarged diameter end portions for driving contact between the rolls at zones outside the image area of the drum roll. The resilient transfer roll is urged toward the drum roll under a biasing force that radially compresses its end portions to maintain it either in merely line contact with the image area of the drum roll or spaced from that area by a distance less than the diameter of toner particles.

Toner removing means for photosensitive drums for electrophotography

An electrophotographic photosensitive material comprising a substrate, a photoconductive photosensitive layer, and an intermediate layer interposed between the substrate and the photosensitive layer, said intermediate layer containing a compound which has at least one of hydroxyl and amino groups together with a quaternary ammonium group. The substrate includes a metallic support body and a conductive protection layer applied to form a surface layer on said metallic support body and made of a resin dispersed with carbon particles.

Electrophotographic material with intermediate layer

A process for preparation of photoconductive powders of a cadmium sulfide type material comprising firing cadmium sulfide type material in an oxygen-containing atmosphere in the presence of a dispersant at a temperature at which the substance to be fired does not melt. The fired substance is water washed in order to remove the dispersant therefrom, if it is water soluble.

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Hachioji, Japan

Masakazu Kokiso