Canon Kabushiki Kaisha

Masaaki Matsushima

Hiroyoshi Kishi

Katsuhiko Takano

Shigeharu Iijima

Eizo Sasamori

Mitsuharu Sawamura

Satoshi Yoshihara

Hisaaki Kawade

Takahiko Ishiwatari

Yasuyuki Suzuki

Hideo Kato

Makoto Kameyama

Kenji Ando

Keiji Hirabayashi

Susumu Ito

Yasushi Taniguchi

Michio Yanagi

Hidehiro Kanazawa

Ryuji Biro

Minoru Otani

Kazuoki Honguu

Hirofumi Shibata

Keiko Matsuda

Yujiro Ando

Takeo Ono

Kazuya Matsumoto

Toshitami Hara

Shigeki Kondo

Yoshiaki Shirato

Hitoshi Oda

Kiyoshi Yamamoto

Haruo Fujii

Hiroki Kisu

Noriko Kurihara

Keiko Ikoma

Hiroshi Omata

Yoshioki Hajimoto

Yoshio Kawakami

Kazuhiko Kikuchi

Hiroshi Kono

Satoshi Takaoka

Fumihiko Arishima

The present invention provides a method for forming a film of aluminum oxide in which a target containing aluminum is sputtered in a gas containing fluorine atoms. The thin film of aluminum oxide according to the present invention has little optical absorption and high refractive index in the ultraviolet and vacuum ultraviolet regions.

Method for forming thin films

An image forming apparatus is provided, with which it is possible to reduce the overall size of an apparatus. The image forming apparatus includes an image bearing member including a plurality of switching elements that are arranged in a moving direction and a generatrix direction of the image bearing member, and a latent image forming unit for forming a latent image on the image bearing member, the latent image forming unit including a voltage generating unit for generating a voltage in each switching element in accordance with an image signal.

Image forming apparatus with switching elements

A printed circuit board is free from any residue of the carbide of resin produced on the surface of its copper foil exposed after boring a blind hole by means of a laser beam. Such a printed circuit board is adapted to have a blind hole bored through an insulator until the hole gets to the copper foil arranged under the insulator by irradiating the insulator with a laser beam. A laser beam absorbing region is provided between said insulator and said copper foil

Circuit board and method of manufacturing a circuit board

A diamond product comprising a semiconductor layer having an outer surface region of graphite in contact with the metal electrode to form an ohmic junction with the metal electrode, wherein the outer surface region of graphite has a thickness of at least about 12 &angst;.

Process of making diamond-metal ohmic junction semiconductor device

A magnetically soft thin-film is prepared either to be of a composition wherein Fe is used as a principal component, and 0.5 to 20 atomic % of Al, 2 to 25 atomic % of at least one of Zr, Hf, Nb, Ta, Mo and W, 0.05 to 5 atomic % of at lease one of Ag and Cu, 0.5 to 25 atomic % of C and 0.2 to 8 atomic % of O are added as additional elements to the principal component, or to be of a composition wherein 0.1 to 5 atomic % of at least one of rare earth elements such as Ce, Sm and Dy is added further to the above-stated composition. These compositions enable the magnetically soft thin-film to have excellent properties as desired for a magnetic head.

Magnetic alloy and magnetic head having at least a part made of the

A magnetooptical recording medium is constituted of a quaternary amorphous magnetic alloy of Gd--Tb--Fe--Co.

Magnetooptical recording medium

A magnetic alloy which contains Fe; 1-15 at. %, at least one element selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Mo and W; 1-10 at. %, at least one element selected from among platinum group elements; 0.1-5 at. %, at least one element selected from the group consisting of Cu, Ag, Au and Cd; 1-20 at. %, at least two elements selected from the group consisting of C, O, B and N; and 3-10 at. %, Al.

Magnetic alloy

A diamond sintered product having diamond particles sintered with a suitable sintering aid is the most suitable as the material for the mold for optical element molding, because it has in combination the advantage of diamond that no fusion with glass at high temperature occurs and oxidation occurs with difficulty to give rise to no precipitation of lead, an appropriate hardness and also the advantage that mirror polishing is possible. 'There is also disclosed a mold which has a diamond layer having a (100) face, made by the CVD method utilizing gas having 1-3% methane in hydrogen.'

Mold having a diamond layer, for molding optical elements

A solid state memory device has a thin film for bubble memory, a laser light source, and optical means using a laser light emitted from the laser light source to cause information to be stored in the form of bubbles on the thin film for bubble memory and reproduce the stored information.

Solid state memory device

A mask structure for lithography has a mask material holding thin film and a holding substrate for holding the peripheral portion of said mask material holding thin film, said mask material holding thin film comprising a film comprising aluminum, nitrogen and oxygen.

Mask structure for lithography, method of preparation thereof and

In an optical recording medium having an optical recording layer provided on a substrate, a carbide film of a substance selected from among tungsten, boron, molybdenum, hafnium, niobium, titanium, chromium, vanadium, tantalum and silicon is formed on one or each side of the recording layer.

Optical recording medium

A magnetic recording medium comprising a substrate, a magnetic recording layer made of an amorphous magnetic film on the substrate, and an anticorrosive layer prepared by oxidation treatment of the surface of the amorphous magnetic film.

Magnetic recording medium

This specification discloses a magneto-optical recording medium having an amorphous magnetic alloy film comprising the following composition and having a readily magnetizable axis in a direction perpendicular to the surface of the film:

Magneto-optical recording medium

An optical recording medium comprises a plurality of layers including an optical recording layer laminated on the substrate, said substrate having a region on and around the edge portion thereof where no optical recording layer is formed, and said region being sealed by any of said layers other than said optical recording layer.

Growing community of inventors

Yokohama, Japan

Masaaki Matsushima