Canon Kabushiki Kaisha

Tetsuo Sueda

Kyosuke Ogawa

Masahiro Kanai

Keishi Saitoh

Teruo Misumi

Yoshio Tsuezuki

Mitsuhiro Tokuhara

Keiichi Murai

Mitsuru Honda

Kazuo Tanaka

Minoru Yoshii

Takeshi Baba

Ryusho Hirose

Toshinori Ando

Masatoshi Okutomi

An image processing apparatus comprises a detector which includes an image reading section of a digital copier and which chases outline information of an image pattern in a predetermined direction and thereby extracts outline points; an arithmetic operating circuit to respectively obtain outline tangential directions on the basis of the outline points; an extracting circuit to select a predetermined number of extraction points from the outline points; a coding circuit to sequentially obtain direction differences in the outline tangential directions on the basis of the extraction points and to code the direction differences; and a recognizing circuit to perform a non-linear matching between a code sequence coded by the coding circuit and a reference code sequence, thereby recognizing the image pattern. The coding circuit calculates the outline tangential directions using predetermined direction codes. With this apparatus, an image pattern can be stably and accurately recognized at high speed without being influenced by positional deviation, rotation, change in size, or the like of the image pattern.

Image processing apparatus

A surface treated metal member comprises a metal member having unevenness with a plurality of spherical mark impressions formed on the surface.

Surface treated metal member, preparation method thereof and

A photoconductive member having a photoconductive layer on a supporting member, said supporting member comprises a metal member having unevenness with a plurality of spherical mark impressions formed on the surface.

A light-receiving member comprises a substrate for light-receiving member and a light-receiving layer of a multi-layer structure having a first layer comprising an amorphous material containing silicon atoms and germanium atoms, a second layer comprising an amorphous material containing silicon atoms and exhibiting a photoconductivity, and a surface layer comprising an amorphous material containing silicon atoms and carbon atoms provided on the substrate successively from the substrate side, said light-receiving layer having at least one pair of nonparallel interfaces within a short range and said nonparallel interfaces being arranged in a large number in at least one direction within the plane perpendicular to the layer thickness direction.

Member having light receiving layer with nonparallel interfaces

A light-receiving member comprises a substrate having a large number of projection parts, whose cross-sectional shape at a given cross-sectional position is a projection shape formed of a main peak and an auxiliary peak as overlapped, on the surface of the substrate, and a light-receiving layer comprising a layer containing an amorphous material including silicon atoms, at least one part of the layer region of the layer being photosensitive, and a surface layer having a reflection-preventive function. An electrophotographic system comprises the above-mentioned light-receiving member.

Light-receiving member

A substrate for light-receiving members has a large number of protruding portions on a surface thereof, each of said protruding portions having at a predetermined cut position a sectional shape comprising a main projection and a subprojection, the main projection and the subprojection overlapping each other.

Member having light receiving layer and substrate with overlapping

A light-receiving member comprises a substrate having a large number of protruding portions on a surface thereof, each of said protruding portions having at a predetermined cut position a sectional shape comprising a main projection and a subprojection, the main projection and the subprojection overlapping each other, and a light-receiving layer comprising a layer comprising an amorphous material containing silicon atoms, at least a part of the layer region of which has photosensitivity and a surface layer comprising an amorphous material containing silicon atoms and carbon atoms.

Member having substrate with irregular surface and light receiving layer

A light-receiving member comprises a substrate having a large number of protruding portions on a surface thereof, each of said protruding portions having at a predetermined cut position a sectional shape comprising a main projection and a subprojection, the main projection and the subprojection overlapping each other, and a light-receiving layer of a multi-layer structure having a first layer comprising an amorphous material containing silicon atoms and germanium atoms and a second layer comprising an amorphous material containing silicon atoms and exhibiting photoconductivity provided on said substrate successively from the substrate side.

Member having substrate with projecting portions at surface and light

A light-receiving member comprises a substrate having a large number of protruding portions on a surface thereof, each of said protruding portions having at a predetermined cut position a sectional shape comprising a main projection and a subprojection, the main projection and the subprojection overlapping each other, and a light-receiving layer with a multi-layer structure having a first layer comprising an amorphous material containing silicon atoms and germanium atoms, a second layer comprising an amorphous material containing silicon atoms and exhibiting photoconductivity, and a surface layer having the reflection preventive function provided successively from the substrate side, said light-receiving layer containing at least one selected from oxygen atoms, carbon atoms and nitrogen atoms.

Member having substrate with protruding surface light receiving layer of

A light-receiving member comprises a substrate having a large number of protruding portions on a surface thereof, each of said protruding portions having at a predetermined cut position a sectional shape comprising a main projection and a subprojection, the main projection and the subprojection overlapping each other, and a light-receiving layer of a multi-layer structure having a first layer comprising an amorphous material containing silicon atoms and germanium atoms, a second layer comprising an amorphous material containing silicon atoms and exhibiting photoconductivity and a surface layer having reflection preventive function provided on the substrate successively from the substrate side.

Member having substrate with protruding surface portions and light

A light receiving member comprises a substrate for light receiving member, a surface layer having reflection preventive function and a light receiving layer of a multi-layer structure having at least one photosensitive layer comprising an amorphous material containing silicon atoms on the substrate, said light receiving layer having at least one pair of non-parallel interfaces within a short range and said non-parallel interfaces being arranged in a large number in at least one direction within the plane perpendicular to the layer thickness direction.

Member having light receiving layer with nonparallel interfaces and

A light receiving member comprises a light receiving layer of a multi-layer structure having a first layer comprising an amorphous material containing silicon atoms and germanium atoms, a second layer comprising an amorphous material containing silicon atoms and exhibiting photoconductivity and a surface layer having reflection preventive function provided on a substrate successively from the substrate side, said light receiving layer having at least one pair of non-parallel interfaces within a short range and said non-parallel interfaces being arranged in a large number in at least one direction within the plane perpendicular to the layer thickness direction.

Member with light receiving layer of A-SI(GE) and A-SI and having

In a document sheet recognition device, a size or position of a document sheet mounted on a document table is detected by detecting light intensities at a plurality of fixed areas on the document sheet table, and the size or position thereof is determined in accordance with the detected light intensities.

Document sheet size or position recognition device

A light-receiving member comprises a substrate and a light-receiving layer of a multi-layer structure having at least one photosensitive layer and a surface layer comprising an morphous material containing silicon atoms and carbon atoms, said light-receiving layer having at least one pair of non-parallel interfaces within a short range and said non-parallel interfaces being arranged in a large number in at least one direction within the plane perpendicular to the layer thickness direction, said non-parallel interfaces being connected to one another smoothly in the direction in which they are arranged.

Member having light receiving layer with smoothly connected interfaces

A light-receiving member comprises a substrate and a light-receiving layer of a multi-layer structure having at least one photosensitive layer and a surface layer having reflection preventive function provided successively from the substrate side; said light-receiving layer having at least one pair of non-parallel interfaces within a short range and said non-parallel interfaces being arranged in a large number in at least one direction within the plane perpendicular to the layer thickness direction; said non-parallel interfaces being connected to one another smoothly in the direction in which they are arranged.

Growing community of inventors

Chofu, Japan

Tetsuo Sueda