Hologram recording material, hologram recording medium and hologram recording method
AssigneeFuji Xerox Co., Ltd.
InventorsHisea Yoshizawa, Jiro Minabe, Yasuhiro Ogasawara, Katsunori Kawano, Kazuhiro Hayashi, Shin Yasuda, Koichi Haga, Makoto Furuki
Life of this patent
Estimating the term…
Abstract
A hologram recording material is used for recording information by at least irradiation with light. The hologram recording material includes photoresponsive molecules, liquid crystal molecules, and particles having an average particle diameter of one tenth or less of a wavelength of light used in the information recording.
Claims21
A hologram recording material for recording information by at least irradiation with light, the hologram recording material comprising
- photoresponsive molecules,
- reactive liquid crystal molecules comprising polymerizable functional groups at terminals of the molecules,
- a photopolymerization initiator, and
- particles of silica or a resin having an average particle diameter of from 15 nm to 40 nm, wherein
- a ratio of the particles to the liquid crystal molecules is from about 0.1% to 5% by weight.
A hologram recording medium for recording information by at least irradiation with light, the hologram recording medium comprising a recording layer that comprises a hologram recording material, the hologram recording material comprising
- photoresponsive molecules,
- reactive liquid crystal molecules comprising polymerizable functional groups at terminals of the molecules,
- a photopolymerization initiator, and
- particles of silica or a resin having an average particle diameter of from 15 nm to 40 nm, wherein
- a ratio of the particles to the liquid crystal molecules is from about 0.1% to 5 % by weight.
A hologram recording method comprising
- conducting multiplex recording of information by using at least one of intensity modulation or polarization modulation of light when a signal light and a reference light are simultaneously irradiated to a hologram recording medium to record information,
- the hologram recording medium having a recording layer including photoresponsive molecules, reactive liquid crystal molecules comprising polymerizable functional groups at terminals of the molecules, a photopolymerization initiator, and particles of silica or a resin, and
- an average particle diameter of the particles being from 15 nm to 40 nm, wherein
- a ratio of the particles to the liquid crystal molecules is from about 0.1% to 5 % by weight.
Dependencies are inferred from the claim text.