Kaneka Corporation

Hiroshi Ogoshi

Kenji Kobayashi

Susumu Fukuda

Kazuyoshi Mimura

Yoshihisa Tawada

Takao Manabe

Kazuaki Kanai

Tomokazu Tozawa

Takahisa Iwahara

Shuhei Ozaki

Kazuhiko Hirabayashi

Yasuo Fushiki

Yasushi Kakehashi

Mitsuhiro Hori

Ryoichi Narita

Satoaki Iba

A molded resin body for surface-mounted light-emitting device has a cured resin body integrally molded with a plurality of leads and a concave portion to which the plurality of leads are exposed at the bottom portion, in which the ten-point average roughness (Rz) of the opening surface of the concave portion is 1 &#x3bc;m to 10 &#x3bc;m, the glass transition temperature of the cured resin body is 10&#xb0; C. or higher and the glass transition temperature is a value measured using a thermomechanical analyzer (TMA) under the conditions of a temperature range of &#x2212;50 to 250&#xb0; C., a temperature elevation rate of 5&#xb0; C./min, and a sample size length of 1 to 5 mm, and the optical reflectance at 460 nm of the opening surface of the concave portion is 80% or more and the optical reflectance retention rate on the opening surface after heating the molded resin body at 180&#xb0; C. for 72 hours is 90% or more.

Molded resin body for surface-mounted light-emitting device, manufacturing method thereof, and surface-mounted light-emitting device

A developing roller ( ) comprising an elastic layer ( ) wound round a conductive shaft ( ) and one or more resin layers ( ) laminated on the elastic layer. The elastic layer ( ) has a JIS A hardness of not greater than 50 degrees. At least the outermost layer of the one or more resin layers ( ) contains fine particles and the surface roughness (R ) of the outermost layer is regulated to be within the range of 3 to 15 &mgr;m. A resin composition containing an &mdash;NHCO&mdash; bound or a resin composition containing &mdash;ROCO &mdash; and &mdash;SiOSi&mdash; repeating units and an &mdash;NHCO&mdash; bond can be used for the outermost layer.

Roller for electrophotographic systems having surface roughness adjusted by fine particles

Developing roller

Growing community of inventors

Settsu, Japan

Hiroshi Ogoshi