Mitsubishi Paper Mills Limited

Sega Enterprises, Ltd.

Ricoh Company, Ltd.

Jun Maruyama

Satoshi Arai

Hidekazu Sano

Kazuyuki Iida

Masahiro Higuchi

Mitsuhiro Ikeda

Shoji Hizatate

Koichi Torizuka

Yutaka Matsuoka

Junichi Terashima

Kenichi Hosaka

Yukiko Shibuya

Yu c/o Ricoh Company Ltd Tsuchimura

The present invention is to provide a reversible two-color heat-sensitive recording material which uses an electron-donative dye precursor which is usually colorless or a pale color and an electron-accepting compound, and a reversible heat-sensitive color-forming composition which is capable of forming a color-formation state and decolorization state relatively due to difference in heating temperature and/or cooling rate after heating is formed on a support, wherein the reversible heat-sensitive color-forming composition comprises at least two kinds of compositions having different color tones to be formed and the compositions are each present separately and in an independent state, and crystallization rates of the electron-donative compounds at the time of changing from the color-formation state to the decolorization state are different from each other.

Reversible two-color heat-sensitive recording material and recording method

Disclosed is a reversible heat-sensitive recording material which is excellent in light resistance and is remarkably free from discoloration caused by exposure to light and erasing failure and which shows a high layer strength and has durability against repeated printing and erasing, the reversible heat-sensitive recording material having a support, a reversible heat-sensitive recording layer formed on the support and at least one protective layer formed thereon, the reversible heat-sensitive recording layer containing a normally colorless or slightly colored dye precursor and a reversible color developer capable of causing a reversible change in color density of the dye precursor on the basis of a difference in cooling rate after heating, wherein at least one of the said layers contains an isocyanate compound and an ultraviolet absorbent capable of reacting with the isocyanate compound to undergo crosslinking.

Reversible heat-sensitive recording material

Disclosed is a reversible heat-sensitive recording material comprising a support and a reversible heat-sensitive recording layer containing a dye precursor which is usually colorless or a pale color and a reversible color developing agent capable of causing a reversible change in color density of the dye precursor due to the difference in cooling rate after heating, and the reversible color developing agent is a compound represented by the following formula (I):

Reversible heat sensitive recording material

A holder is provided for a remote controller of a karaoke machine. The holder causes the remote controller to be removably held to a handle of a microphone. The holder comprises a portion of an elastic material, such that the portion can tightly fit an outer surface of the handle of the microphone. Further, the holder comprises an approximately C-shaped portion or an approximately ring-shaped portion which matches an outer shape of the handle of the microphone. The remote controller comprises infrared-ray-emitting diodes for emitting a signal in response to a user operating the control buttons to the karaoke machine. A signal-receiving means receives the signal emitted by the signal-emitting means, the signal-receiving means then outputting a relevant signal to the karaoke machine for amplifying a voice input through the microphone, adding accompaniment to the thus-amplified voice and outputting a resulting sound.

Removable audio remote controller for a microphone

Disclosed is a reversible heat-sensitive recording material comprising a substrate and a recording layer formed thereon, said recording layer comprising a colorless or light-colored, electron-donating dye precursor and a specific electron-accepting compound capable of causing a reversible color tone change of the dye precursor on heating.

Growing community of inventors

Tokyo, Japan

Jun Maruyama