Bridgestone Corporation

Yoneji Kobayashi

Kazuya Murata

Gaku Yakushiji

Yoichi Nishimuro

Kunio Machida

Taichi Kobayashi

Ryo Sakurai

Hiroyuki Anzai

Hirotaka Yamazaki

Norihiko Kaga

Toshiaki Arai

Hajime Tamura

Maki Masutani

Katsumi Iida

Hare Tazawa

Hiroshi Ezaki

White color particles for display media used for an information display device, in which particles including at least the white color particles or liquid powders including at least the white color particles (W) are sealed between two substrates, at least one substrate being transparent, and, in which the particles or the liquid powders, to which an electrostatic field is applied, are made to move so as to display an image, is characterized in that the improvement is composed of resins made of methylpentene or cycloolefin and titanium oxide. Moreover, as a preferred embodiment, a white color reflectance is not less than 40%, and, the improvement has a heat resistance such that no fusion bond is detected after the white color particles are sprayed on a glass substrate heated at 120 &#xb0; C. and the heating state of the heated glass substrate is kept for 30 minutes. In this manner, it is possible to provide the white color particles for display media having an excellent white color reflectance, a high contrast on the display image and a sufficient heat resistance.

White color particles for display media and information display device utilizing them

In the particles for display media constituting the display media used for an information display panel, in which the display media are sealed between two substrates, at least one substrate being transparent, and, in which the display media, to which an electrostatic field is applied, are made to move so as to display information such as an image, the particles for display media, which are produced by crushing resin blocks and classifying them, are that Izot impact strength of the resin constituting the particles for display media (based on ASTM D256) is less than 4 kgf&#xb7;cm/cm and a deflection temperature under load of the resin constituting the particles for display media (base on ASTM D648) exceeds 100&#xb0; C.

Particles for display media and information display panel using the particles

An image display device, in which image display media are sealed between opposed substrates, at least one of two substrates being transparent, and in which the image display media, to which an electrostatic field is applied, are made to move so as to display an image. A construction of particles used as the image display media is improved (the first, second, fourth, fifth, sixth, eighth and ninth aspects of the invention), and a material of the particles used as the image display media is improved (the third, seventh and tenth aspects of the invention). Whiteness of the particles and a liquid powder using the particles is improved, particle agglutination is prevented, and the charge property is controlled. Moreover, durability is improved such that a contrast of the image display during a repetition display is not decreased. As a result, an excellent image display can be achieved.

Particle use for image display media, image display panel using the particles, and image display device

The golf club set according to the present invention consists of plural golf clubs of which the lofts are increased iron a predetermined order, preferably with increments of 3.degree. to 4.degree.. The heads of golf clubs with lofts ranging from 9.degree. to 25.degree. in the set being constructed with a sole plate attached to a shell of a synthetic resin and integrally formed with a core, the heads of golf clubs with lofts ranging from 22.degree. to 31.degree. being constructed with a shell of a synthetic resin, core and sole plate formed integrally with one another, and the heads of golf clubs with lofts ranging from 28.degree. to 50.degree. being constructed with a mass of a high specific gravity synthetic resin and a sole plate molded integrally with each other.

Golf club set

Growing community of inventors

Kodaira, Japan

Yoneji Kobayashi