Canon Kabushiki Kaisha

Kazutaka Takeuchi

Shoichi Shimura

Yasuhiro Tanaka

Osamu Kanome

Ichiro Maekawa

Hideyuki Hatakeyama

Katsumoto Hosokawa

Hisakazu Morinaga

An optical synthetic resin composed of: a synthetic resin; and fine particles dispersed in the synthetic resin at a ratio of 0.1 vol % or more to 50 vol % or less, each having a maximum length of 1 nm or more to 30 nm or less, in which part of surfaces of the fine particles are modified with functional groups which themselves repel each other, and a distance between two arbitrary adjacent fine particles among the fine particles is in a range of 0.1 nm or more to 500 nm or less. The two arbitrary adjacent fine particles attract each other with an intermolecular force, thereby making it possible to provide an optical composite deviating from an additivity range.

Optical composite material and optical element

A transport belt comprising a base member layer formed of a film comprised of a thermoplastic material and wound in the shape of a belt, and a plurality of electrodes arranged at given intervals in the shape of comb teeth on the outer periphery or inner periphery of the first base member layer. The electrodes each comprise a linear film comprised of a thermoplastic material and are joined by heating onto the first base member layer. This transport belt is improved in attraction of recording mediums and enables transport of the recording mediums in a high accuracy. Also disclosed are a process for its manufacture and an image-forming apparatus making use of the same.

Process for manufacturing a transport belt

The absorption belt capable of absorbing an object such as a printing medium P includes an insulating layer, a plurality of positive electrodes and a plurality of negative electrodes arranged alternately on the insulating layer, and a plurality of absorption layers for covering the electrodes. The absorption layers have different volume resistivities.

Absorption belt, image forming apparatus with absorption belt and method for producing absorption belt

A method of manufacturing a tubular film includes the steps of: winding a thermoplastic sheet film on a columnar member with at least two turns so that leading and trailing ends of the film are placed approximately on one normal line of an outer surface of the columnar member without overlapping each other; fitting a tubular molding member on the wound film; and connecting the leading and trailing ends of the film by heating at least the film, thereby forming the sheet film into the tubular film. The resulting tubular film has a high film thickness uniformity and suitable for a fixing film of an image forming apparatus.

Method of manufacturing tubular film

In a transfer belt, serving as the endless belt, a groove is formed so as to set a side surface of the rib member at a position separated by a distance A from a lateral-direction end of the transfer belt. The distance A is longer than a distance X between a first end and a second end of the rib member.

Endless belt, method for manufacturing the endless belt, conveying device, tubular film, method for manufacturing the tubular film, and image forming apparatus

A shaft integral with a rotary polygon mirror is fitted in a sleeve so as to be rotatable, and the bearing clearance is filled with a lubricant. The lubricant comprises a base oil comprising a mixed oil consisting of a plurality of components whose vapor pressures are equal or close to each other. Suitably combining components of different viscosities makes it possible to prepare the lubricant so as to have such a viscosity to match with the bearing characteristics. Selection of components having a little difference in vapor pressure prevents viscosity change due to volatilization of a specific component. Thus, the viscosity change of the lubricant in the bearing clearance is prevented.

Hydrodynamic bearing apparatus and deflection scanning apparatus having same

A minutely working method of and apparatus for opposing the surface of a transfer member having a concave or convex pattern formed on the surface thereof and the surface of a workpiece to each other, heating the transfer member and thermally expanding the transfer member in the direction of a normal to the surface thereof to thereby transfer the concave or convex pattern to the workpiece.

Minutely working process

A process for producing a tubular article is provided which, comprising winding a first thermoplastic sheet film on a cylindrical member with the wind-starting portion and the wind-ending portion thereof overlapped, placing a metal tube outside the above wound film either (a) by winding a metal sheet with both of the sheet ends thereof abutted or (b) by fitting a metal tube, winding a second thermoplastic sheet film on the metal tube with the wind-starting portion and the wind-ending portion thereof overlapped, fitting a tubular member outside the wound second thermoplastic sheet film, and heating at least the first and second thermoplastic films to bond the overlapped portions of the thermoplastic sheet films. The tubular article produced according to the present invention has significantly improved film properties such as heat resistance (thermal expansion, break strength at high temperatures, etc.), thermal conductivity, electrical conductivity, and so forth in comparison with simple resin tubular articles (or films).

Process for producing tubular article for a fixation device

A tubular film for fixing a unit of an image forming apparatus. Includes a rib portion as an engage portion at its one end. For forming the rib portion, a groove is provided at an end of a cylindrical member, as an inner mold, and/or a tubular mold member as an outer mold, and a film to be the rib is rolled along the groove.

Tubular-film and image forming apparatus using tubular film

Provided is a method of manufacturing a cylindrically shaped article, wherein a thermoplastic layer is formed on the surface of the cylindrically shaped article precisely and at low cost. To achieve this, the outer peripheral surface of a cylindrically shaped article supported on a columnar member is coated with particles of a thermoplastic resin, a tubular molding member is fitted on the cylindrically shaped article coated with a film of the particles of thermoplastic resin, and at least the columnar member is then heated to calcine the thermoplastic resin film.

Cylindrically shaped article, method of manufacturing same and film for

A tubular film for fixing a unit of an image forming apparatus includes a rib portion as an engage portion at its one end. For forming the rib portion, a groove is provided at an end of a cylindrical member, as an inner mold, and/or a tubular mold member as an outer mold, and a film to be the rib is rolled along the groove.

Tubular-film manufacturing method

A tubular film having a high film thickness uniformity and suitable for a fixing film of an image forming apparatus is provided. To achieve such a film, a thermoplastic sheet film is so wound that the leading and trailing end portions of the film partially overlap each other to form overlapping portions, and the wound film is heated between a core member and a tubular molding member.

A plastic molded article has an external appearance of a coated article and is formed by injection molding using a mold with a surface shaped by forming machining marks in the form of recesses over the entire mold surface. The resulting plastic molded article has a center line average roughness of the surface shaped of the plastic molded article less than 0.5 .mu.m and one of either an average slope within the range of 1.0.about.10.0.degree. or an average peak-to-peak interval within the range of 5.0-30.0 .mu.m.

Growing community of inventors

Yokohama, Japan

Kazutaka Takeuchi