Canon Kabushiki Kaisha

Noriko Kurihara

Keiji Hirabayashi

Keiko Ikoma

Yasushi Taniguchi

Tohru Den

Masao Sugata

Kiyoshi Yamamoto

Susumu Ito

Kenji Ando

Kuniji Osabe

Keishi Saito

Tatsuo Takeuchi

Akio Maruyama

Hiroyuki Sugata

Yoshihiro Oguchi

Hiroshi Satomura

Osamu Kamiya

Takeo Tsukamoto

Masahiro Haruta

Masahiko Okunuki

Masaaki Matsushima

Takashi Hamamoto

Toshiaki Kimura

Nobuo Watanabe

Susumu Itoh

A mold for use for press-molding an optical element, in which a molding surface of a mold base material is coated with a hard carbon film containing 0-5 atom% of hydrogen. It has a spin density of 1.times.10.sup.18 spin/cm.sup.3 or less and a film density of at least 1.5 g/cm.sup.3.

Mold with film of 0-5 atom % hydrogen and molding method utilizing same

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

An electric field effect light emitting device comprises a light emitting layer consisting of a diamond-like carbon film containing oxygen.

Electric field light-emitting device

Disclosed is a mold for forming glass material into optical elements, such as lenses and prisms, by press molding. In particular, the optical-element-molding surface of this mold is coated with diamond crystals in predetermined, spaced apart portions.

Diamond crystal coated mold for forming optical elements

An electron emitting device is provided with a p-semiconductor layer formed on a semiconductor substrate. The p-semiconductor layer is composed of a diamond layer.

Electron emitting device with diamond

This specification discloses a mold for use for press-molding an optical element, characterized in that at least the molding surface of a mold base material is coated with an a-C:H film containing 5-40 atom % of hydrogen therein and having a film density of 1.5 g/cm.sup.3 or more, and with hard carbon film containing 0-5 atom % of hydrogen therein and having a spin density of 1.times.10.sup.18 spin/cm.sup.3 or less and a film density of 1.5 g/cm.sup.3 or more.

Method of making an optical element mold with a hard carbon film

This specification discloses a mold for use for press-molding an optical element, characterized in that at least the molding surface of a mold base material is coated with an a-C:H film containing 5-40 atom % of hydrogen therein and having a film density of 1.5 g/cm.sup.3 or more. Other mold coating films also disclosed are a hydrogenated amorphous carbon film with an intermediate carbide layer between the film and the molding surface, and a hard carbon film containing 0-5 atom % of hydrogen therein and having a spin density of 1.times.10.sup.18 spin/cm.sup.3 or less and a film densisy of 1.5 g/cm.sup.3 or more.

Mold with hydrogenated amorphous carbon film for molding an optical

A device for treating fine particles is provided which comprises a plural number of reaction chambers for providing reaction fields different from each other provided along the flow pathway on the downstream side of a nozzle which jets out fine particles in a beam. The device may be provided with a chamber for a starting material for forming fine particles. The nozzle may be a convergent-divergent nozzle.

Device and process for treating fine particles

A device for blowing fine particles is provided which comprises a plural number of upstream chambers for jetting out fine particles provided against a movable substrate. Each of the upstream chambers may be provided with a gas exciter, and also may be provided with an energy imparter for imparting energy to the substrate.

Plurality of beam producing means disposed in different longitudinal and

A general-purpose novel diamond-like carbon film (DLC film) and its manufacture, and the DLC film is characterized by the following items (i) to (iv); (i) the film structure contains mainly diamond crystalline phases, and has a hydrogen content of 20 atomic %, the presence of diamond crystalline phases is confirmed by analysis by the electron diffraction method, and the diffraction peak appears at 2.theta.=43.9 by analysis by the X-ray diffraction method; (ii) the density is 1.8 g/cm.sup.3 or over; (iii) the film surface is smooth and excellent in etching resistance; and (iv) the film is chemically stable and structurally stable, and these stabilities are not deteriorated under high temperature conditions.

Novel diamond-like carbon film and process for the production thereof

There is provided a novel single-bond carbonic film, matrix of which comprises carbon atoms and which is characterized by having a peak A at 1340.+-.20 cm.sup.-1 and a peak B at 1580.+-.10 cm.sup.-1 in Raman spectrum; a value of 9.7 or more for the ratio of I.sub.A /I.sub.B between the intensity of said peak A(I.sub.A) and the intensity of said peak B(I.sub.B): and a value in the range of from 30 cm.sup.-1 to 110 cm.sup.-1 for the half band width of said peak A.

Novel single-bond carbon film and process for the production thereof

An improved photosensitive member for use in electrophotography which comprises a substrate and a light receiving layer having a charge carrier generation layer and a charge carrier transportation layer composed of a carbonic film the nucleus of which matrix being carbon atom, which contains 40 atomic % or less of hydrogen atom and which possesses an optical band gap of 1.5 eV or more and an electric conductivity of 10.sup.-11 .OMEGA..sup.-1 cm.sup.-1 or less. It is always and substantially stable regardless of the changes in use environments and it enables to make highly resolved images with a clear half-tone which are highly dense and quality at high speed.

Photosensitive member having a light receiving layer comprising a

A cardlike optical recording medium comprises a substrate, a recording layer and a protective layer, wherein an ultra-hard film containing a carbon atom is provided at least on the side of said optical recording medium on which a laser beam for writing-reproducing is irradiated.

Cardlike optical recording medium

An improved photosensitive member for use in electrophotography which is characterized by having a substrate and a photoconductive layer comprising a carbonic film, the nucleus of which matrix being carbon atom, which contains 30 atomic % or less of hydrogen atom and at least one selected from the elements of Group III and Group V of the Periodic Table, and which has an optical band gap of more than 1.5 eV and an electrical conductivity of 10.sup.-11 .OMEGA..sup.-1 cm.sup.-1 or less. It is always and substantially stable regardless of the changes in use environments and it enables to make highly resolved images with a clear half-tone which are highly dense and quality at high speed.

Growing community of inventors

Tokyo, Japan

Noriko Kurihara