Canon Kabushiki Kaisha

Hiroaki Kumagai

Masaaki Takahashi

Kazuo Kishino

Hideo Kawamoto

Hideyuki Hatakeyama

Takeo Shimizu

Tomokazu Iyoda

Naoki Kobayashi

Jiro Ishizuka

Takeshi Menjo

Rie Saito

Nagato Osano

Ryuichiro Maeyama

A toner fixation film has an exothermic layer within which an eddy current is induced with application of a magnetic field and then heat is generated. The exothermic layer is a composite layer in which an exothermic part and resin part coexist. The toner fixation film can offer a sufficient heat generation necessary for toner fixation, and has enough flexiblity to permit curvature separation. A toner fixation apparatus comprises the toner fixation film and at least one coil for producing an alternating magnetic field for eddy current induction.

Toner fixation film and toner fixation apparatus using it

A fixing member suitable for use in an electrophotographic image forming apparatus is formed by providing a silicone rubber surface layer containing a metal compound represented by M.sub.m X.sub.n, wherein M denotes a metal cation selected from Al, Sc, Cr, Fe, Co, Ni, Cu, Zn and Ga, X denotes an anion selected from halogens, inorganic acid ions and organic acid ions, and m and n are positive integers satisfying m.times.(valence of M)=n.times.(valence of X). The silicone rubber surface layer can exhibit improved wear resistance while retaining a good toner releasability.

Fixing member and fixing apparatus including same

The present invention provides a fluororesin-coated member having a fluororubber layer containing a fluororesin, and a fluororesin layer formed on the fluororubber layer. The fluororesin layer is a uniform layer formed by coating an aqueous fluororesin dispersion coating and burning it, and exhibits excellent surface smoothness and durability of adhesion to the fluororubber layer. The present invention also provides a method of producing the fluororesin-coated member.

Fluororesin-coated member, production method therefor and heat fixing

A heat fixing belt having an electrically conductive layer in which an eddy current is produced by an alternating magnetic field applied from outside the belt thereby generating heat. The belt further includes toner release layer disposed on the surface of the fixing belt, the fixing belt being characterized in that the electrically conductive layer is an aluminum layer with a thickness less than 35 .mu.m, and having a rubber elastic layer between the aluminum layer and the toner release layer. The rubber elastic layer is disposed between the aluminum layer and the toner release layer making it possible to greatly reduce the time required to heat the fixing belt up to a predetermined temperature necessary for the fixing operation after the electric power is turned on. Thus, the invention can provide a heat fixing apparatus capable of quickly starting the fixing operation.

Heat fixing belt with conductive aluminum layer toner release layer and

A fixing roller for thermally fixing an unfixed toner image is comprised of a core cylinder and a fluororesin tube fused on the core cylinder. The core cylinder is provided on its periphery with a minute groove means. On fusing the fluororesin tube on the core cylinder, the minute groove means gives to the surface of the fluororesin tube convexities or concavities extending in parallel in the peripheral direction of the fixing roller.

Fluororesin tube-covered fixing roller, and image formation apparatus

A fixing rotatable member for use in an image forming apparatus such as a copying apparatus or a laser beam printer is disclosed. The fixing rotatable member includes a base member and an elastic layer provided on the surface thereof. The elastic layer is addition type silicone rubber in which resin-like polyorganosiloxane and 0.1 to 2 percent by weight of inorganic fine powder are mixed.

Rotatable member for fixing in which inorganic filler is contained in

An optical device is composed of: a transparent base plate formed of a glass or a macromolecular resin; a first layer formed of a substance having a refractive index of 1.58 or higher; and a second layer formed of an amorphous transparent fluorocarbon resin having a refractive index of 1.35 or lower. The second layer is farther from the transparent base plate than the first layer from the transparent base plate. The first and second layer constitute a film for preventing reflection. Optionally, adhesive layers are provided between the transparent base plate and the first layer and between the first layer and the second layer. Further optionally, the surfaces of the transparent base plate and the first layer are treated in order to enhance adhesion between the contact surfaces.

Optical device

Thiophene derivatives represented by the general formula (I): ##STR1## where R is an aldehyde, carboxyl, C.sub.1-5 -alkyl ester or C.sub.1-5 -alkyl acetal group and n is 3 to 5, are prepared. These compounds are reversibly converted to their respective isomers by light irradiation, accompanied with a large shift of absorption and emission bands, thus suitable for a photo-responsive material.

Growing community of inventors

Kawasaki, Japan

Hiroaki Kumagai