Toyo Ink Manufacturing Company

Toppan Printing Co., Ltd.

Koji Hanada

Takeshi Yoshikawa

Tsuneo Tanaka

Hiroyuki Nihashi

Masashi Sawamura

Michichika Hikosaka

Motohiko Kashioka

Toru Ohmura

Tetsuro Yoshitomi

Makiko Hamuro

Mashato Ohashi

A method of reading electrical information, which comprises arranging electric field-generating means having a pulse oscillator and detection means of detecting a potential in the electric field to form an electrostatic coupling space and/or a latent electrostatic coupling space where the and the detection means can sense a change in the electric field as a change of potential passing an information carrying member formed by covering an electrically conductive member having a form expressing information with an electrically nonconductive material through the electrostatic coupling space or the latent electrostatic coupling space, thereby to detect the information expressed by the form of the electrically conductive member, and information carrying member for use in the method.

Method of reading electrical information and information carrying member

Plural successive light beam pulses are directed through a continuously adjustable aperture. An actuator is driven to change an aperture diameter of the continuously adjustable aperture for each of the plural successive light beam pulses directed therethrough. The aperture diameter is adjusted in this manner in accordance with a pixel diameter of each of respective plural pixels to be printed on a print medium by the plural successive light beam pulses.

Method of controlling size of light beam pulses used to form respective

A data-written medium in which the data is readable with a light source having a main wavelength of 600 to 700 nm, the medium comprising a substrate and an ink layer containing not more than 0.1 g/m.sup.2 of a chromatic color dyestuff having absorption substantially at 600 to 700 nm and at least one other color dyestuff as the remainder. The ink layer is formed on the substrate so as to have a form constituting the data. Also provided is a data-written medium in which the data is readable with light sources having a main wavelength of 600 to 1,500 nm, the medium comprising a substrate, a first ink layer containing not more than 0.1 g/m.sup.2 of a chromatic color dyestuff having substantial absorption at 600 to 700 nm and another dyestuff as the remainder, and a second ink layer containing a substance having substantial absorption in a near infrared region. Each of the two ink layers is formed so as to individually have a form constituting to two corresponding data.

Data-written medium

A method of controlling a size of a light beam, which comprises rotating a disk having a groove whose size changes continuously or a polygonal-shaped rotor having grooves of different sizes, on the circumferential surface, and irradiating the groove or grooves with a light beam, whereby the groove or grooves provide a transmitted light beam having a size that change continuously or stepwise, respectively, while retaining an analogous form of the light beam.

Method of controlling size of light beam

This invention provides a heat-sensitive transfer layer which comprises a substrate and a heat-melting ink layer provided to one surface of said substrate, characterized by providing, between said substrate and heat-melting ink layer, an interlayer which breaks away within itself by separation under heat at the time of heat transfer.

Heat-sensitive transfer material

A heat-sensitive transfer sheet comprising a base film, a first hot melt layer composed mainly of wax, a coloring layer comprising at least one colorant and at least one a resin as a vehicle, and a second hot melt layer composed mainly of wax, these layers being formed on said base film in this order.

Growing community of inventors

Tokyo, Japan

Koji Hanada