Patents by Inventor Takeo Kakinuma
Takeo Kakinuma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 8488074Abstract: A display medium comprises: a pair of electrodes to which a voltage is applied; and a liquid crystal layer stack provided between the pair of electrodes. The liquid crystal layer stack contains a first liquid crystal layer having a first liquid crystal that undergoes transition into a specific alignment state in response to the voltage applied to the electrodes becoming equal to or greater than a first voltage value, and a second liquid crystal layer having a second liquid crystal that undergoes transition into the specific alignment state in response to the voltage becoming equal to or greater than a second voltage value. The second voltage value is greater than the first voltage value, and the second liquid crystal has a higher isotropic phase transition temperature than the first liquid crystal.Type: GrantFiled: March 22, 2010Date of Patent: July 16, 2013Assignee: Fuji Xerox Co., Ltd.Inventors: Naoki Hiji, Chikara Manabe, Takeo Kakinuma, Tadayoshi Ozaki
-
Patent number: 8248574Abstract: A liquid crystal display element includes a first substrate having a first electrode on one surface thereof, a transparent second substrate having a transparent second electrode on one surface thereof, a first liquid crystal layer containing a liquid crystal composition, a color filter, and a second liquid crystal layer containing a liquid crystal composition, and at least one of the first and second liquid crystal layers includes an additive having dielectric properties, and the dielectric constant of the first liquid crystal layer is different from that of the second liquid crystal layer.Type: GrantFiled: September 4, 2009Date of Patent: August 21, 2012Assignee: Fuji Xerox Co., Ltd.Inventors: Takeo Kakinuma, Tadayoshi Ozaki, Chikara Manabe, Naoki Hiji
-
Patent number: 8220939Abstract: A screen device of the present invention has a light collecting element array including a plurality of light collecting elements that collect incident light from a projector and a back surface sheet. The back surface sheet includes a first electrode plate, a second electrode plate, a photoconductive layer disposed between the first electrode plate and the second electrode plate, and an image recording layer disposed between the first electrode plate and the photoconductive layer. At the back surface sheet, a light reflecting portion is formed at a light collecting region to which the light collected by the light collecting elements is irradiated, and a light absorbing portion is formed at a non-light collecting region to which the light collected by the light collecting elements is not irradiated.Type: GrantFiled: September 2, 2009Date of Patent: July 17, 2012Assignee: Fuji Xerox Co., Ltd.Inventors: Naoki Hiji, Takeo Kakinuma, Chikara Manabe, Tadayoshi Ozaki
-
Patent number: 8179484Abstract: The present invention provides a display medium which prevents a decrease in reflectance during storage at high temperatures, and a writing apparatus using the display medium. A photoconductive layer 24, a selective light transmission layer 22, and a liquid crystal layer 20 are laminated between substrates 12 and 14, which have electrodes 16 and 18, respectively, to form a display medium 10. The selective light transmission layer 22 as a color layer is composed of a deionized material. The ion concentration of the selective light transmission layer 22 is controlled to be within a predetermined range.Type: GrantFiled: June 23, 2008Date of Patent: May 15, 2012Assignee: Fuji Xerox Co., Ltd.Inventors: Hideo Kobayashi, Masaaki Araki, Takehito Hikichi, Takeo Kakinuma, Naoki Hiji, Chikara Manabe, Motohiko Sakamaki, Hiroe Okuyama, Shigeru Yamamoto
-
Patent number: 8070982Abstract: A liquid crystal-containing composition includes a microcapsule. In the microcapsule, a liquid crystal is encapsulated by a shell material component containing polyurea. Monomer components included in the polyurea include a polyisocyanate component, a high molecular weight polyamine component and a low molecular weight polyamine component.Type: GrantFiled: October 8, 2008Date of Patent: December 6, 2011Assignee: Fuji Xerox Co., Ltd.Inventors: Naoki Hiji, Takeo Kakinuma, Chikara Manabe, Tadayoshi Ozaki
-
Patent number: 7952668Abstract: A display medium including: a pair of substrates; a pair of electrodes disposed on the pair of substrates, and facing each other; and a functional layer and a display layer disposed between the pair of electrodes with an adhesive layer disposed between the functional layer and the display layer. The display layer includes a binder and microcapsules dispersed in the binder. The microcapsules have a polymer serving as a wall material, and a liquid crystal enclosed therein. A shape of an interface of the display layer at least on the side of the adhesive layer in a cross section along a thickness direction of the disposed layers is an irregular line having a distance between a highest protruding portion and a lowest depressed portion is from about 0.5 ?m to about 2.0 ?m.Type: GrantFiled: March 12, 2008Date of Patent: May 31, 2011Assignee: Fuji Xerox Co., Ltd.Inventors: Takeo Kakinuma, Shigeru Yamamoto
-
Patent number: 7939143Abstract: A liquid crystal-containing composition includes a cholesteric liquid crystal and a microcapsule wall that encapsulates the cholesteric liquid crystal, the microcapsule wall includes at least one material selected from polyurethane and polyurea, and the content of the microcapsule wall with respect to 100 parts by weight of the cholesteric liquid crystal is from about 0.1 parts to about 11 parts by weight.Type: GrantFiled: May 27, 2009Date of Patent: May 10, 2011Assignee: Fuji Xerox Co., Ltd.Inventors: Chikara Manabe, Naoki Hiji, Takeo Kakinuma, Tadayoshi Ozaki
-
Patent number: 7903181Abstract: A recording device includes a first voltage application unit that applies a first voltage to a display layer; a second voltage application unit that applies a second voltage; a first irradiation unit that irradiates to the display layer first light synchronized with the application of the second voltage; a second irradiation unit that irradiates to the display layer a second light after the application of the second voltage is terminated, the second light having a third intensity if the second light is irradiated at an area corresponding to the first tone in the second liquid crystal layer, the second light not being irradiated if the second light is irradiated at an area corresponding to the second tone in the second liquid crystal layer.Type: GrantFiled: March 15, 2010Date of Patent: March 8, 2011Assignee: Fuji Xerox Co., Ltd.Inventors: Atsushi Hirano, Taijyu Gan, Haruo Harada, Takashi Morikawa, Chisato Urano, Yasunori Okano, Hiroshi Arisawa, Takeo Kakinuma, Chikara Manabe
-
Publication number: 20110043716Abstract: A display medium comprises: a pair of electrodes to which a voltage is applied; and a liquid crystal layer stack provided between the pair of electrodes. The liquid crystal layer stack contains a first liquid crystal layer having a first liquid crystal that undergoes transition into a specific alignment state in response to the voltage applied to the electrodes becoming equal to or greater than a first voltage value, and a second liquid crystal layer having a second liquid crystal that undergoes transition into the specific alignment state in response to the voltage becoming equal to or greater than a second voltage value. The second voltage value is greater than the first voltage value, and the second liquid crystal has a higher isotropic phase transition temperature than the first liquid crystal.Type: ApplicationFiled: March 22, 2010Publication date: February 24, 2011Applicant: FUJI XEROX Co., Ltd.Inventors: Naoki Hiji, Chikara Manabe, Takeo Kakinuma, Tadayoshi Ozaki
-
Publication number: 20110019111Abstract: A display medium comprises: a pair of electrodes to which a voltage is applied; a cholesteric liquid crystal layer provided between the pair of electrodes, wherein an alignment state of the cholesteric liquid crystal layer changes depending on a strength of an electric field generated upon application of a voltage to the pair of electrodes; and an intervening layer provided in an area between a part of the cholesteric liquid crystal layer and one of the pair of electrodes such that a strength of an electric field generated in the part of the cholesteric liquid crystal layer upon application of a voltage to the pair of electrodes is different from a strength of an electric field generated in another part of the cholesteric liquid crystal layer.Type: ApplicationFiled: March 22, 2010Publication date: January 27, 2011Applicant: Fuji Xerox Co., Ltd.Inventors: Takashi Morikawa, Haruo Harada, Taijyu Gan, Yasunori Okano, Atsushi Hirano, Chisato Urano, Chikara Manabe, Takeo Kakinuma, Hiroshi Arisawa
-
Patent number: 7857203Abstract: A medium writing apparatus obtains information to be written onto a recording medium, converts the information into a suitable writable format, and then writes the converted information onto the recording medium. An ID obtaining section obtains a medium ID from the recording medium, or through an input by the user. The medium ID and information indicating the place of the written information are sent to a server, and then stored as index information correlating them with each other. When the information written onto the recording medium is to be used at a later timing, the medium ID is identified, and the index information is obtained from the server. Therefore, the original information can be obtained so as to be easily reprocessed or reused.Type: GrantFiled: June 12, 2009Date of Patent: December 28, 2010Assignee: Fuji Xerox Co., Ltd.Inventors: Ikutaroh Nagatsuka, Yasunori Saito, Minoru Koshimizu, Daisuke Tsuda, Tsunemasa Mita, Tsutomu Ishii, Kiyoshi Shigehiro, Takeshi Matsunaga, Takeo Kakinuma, Yoshinori Machida, Yasufumi Suwabe, Hiroshi Arisawa, Yasunari Nishikata, Haruo Harada
-
Patent number: 7843530Abstract: A liquid crystal-containing composition includes a first cholesteric liquid crystal having a peak wavelength of selective reflection in the range of from 600 nm to 800 nm and encapsulated in a microcapsule and a second cholesteric liquid crystal having a peak wavelength of selective reflection in the range of from 400 nm to 500 nm as the only liquid crystals, and the content of the second cholesteric liquid crystal with respect to the entire cholesteric liquid crystal content is from about 5 weight % to about 40 weight %.Type: GrantFiled: May 21, 2009Date of Patent: November 30, 2010Assignee: Fuji Xerox Co., Ltd.Inventors: Naoki Hiji, Takeo Kakinuma, Chikara Manabe, Tadayoshi Ozaki
-
Publication number: 20100296011Abstract: A recording device includes a first voltage application unit that applies a first voltage to a display layer; a second voltage application unit that applies a second voltage; a first irradiation unit that irradiates to the display layer first light synchronized with the application of the second voltage; a second irradiation unit that irradiates to the display layer a second light after the application of the second voltage is terminated, the second light having a third intensity if the second light is irradiated at an area corresponding to the first tone in the second liquid crystal layer, the second light not being irradiated if the second light is irradiated at an area corresponding to the second tone in the second liquid crystal layer.Type: ApplicationFiled: March 15, 2010Publication date: November 25, 2010Applicant: FUJI XEROX CO., LTD.Inventors: Atsushi HIRANO, Taijyu Gan, Haruo Harada, Takashi Morikawa, Chisato Urano, Yasunori Okano, Hiroshi Arisawa, Takeo Kakinuma, Chikara Manabe
-
Patent number: 7833589Abstract: A liquid crystal-containing composition and a liquid crystal display device including the same, the liquid crystal-containing composition including a cholesteric liquid crystal and microcapsules containing the cholesteric liquid crystal, and having a wall component comprising at least one selected from the group consisting of polyurethane and polyurea, the wall component further including a first isocyanurate component having a cyclo ring structure and a second isocyanate component other than the first isocyanurate component.Type: GrantFiled: October 7, 2008Date of Patent: November 16, 2010Assignee: Fuji Xerox Co., Ltd.Inventors: Chikara Manabe, Naoki Hiji, Takeo Kakinuma, Tadayoshi Ozaki
-
Publication number: 20100245695Abstract: A liquid crystal display element includes a first substrate having a first electrode on one surface thereof, a transparent second substrate having a transparent second electrode on one surface thereof, a first liquid crystal layer containing a liquid crystal composition, a color filter, and a second liquid crystal layer containing a liquid crystal composition, and at least one of the first and second liquid crystal layers includes an additive having dielectric properties, and the dielectric constant of the first liquid crystal layer is different from that of the second liquid crystal layer.Type: ApplicationFiled: September 4, 2009Publication date: September 30, 2010Applicant: FUJI XEROX CO., LTD.Inventors: Takeo KAKINUMA, Tadayoshi OZAKI, Chikara MANABE, Naoki HIJI
-
Publication number: 20100208217Abstract: A screen device of the present invention has a light collecting element array including a plurality of light collecting elements that collect incident light from a projector and a back surface sheet. The back surface sheet includes a first electrode plate, a second electrode plate, a photoconductive layer disposed between the first electrode plate and the second electrode plate, and an image recording layer disposed between the first electrode plate and the photoconductive layer. At the back surface sheet, a light reflecting portion is formed at a light collecting region to which the light collected by the light collecting elements is irradiated, and a light absorbing portion is formed at a non-light collecting region to which the light collected by the light collecting elements is not irradiated.Type: ApplicationFiled: September 2, 2009Publication date: August 19, 2010Applicant: FUJI XEROX CO., LTD.Inventors: Naoki HIJI, Takeo KAKINUMA, Chikara MANABE, Tadayoshi OZAKI
-
Publication number: 20100164848Abstract: A liquid crystal-containing composition includes a cholesteric liquid crystal and a microcapsule wall that encapsulates the cholesteric liquid crystal, the microcapsule wall includes at least one material selected from polyurethane and polyurea, and the content of the microcapsule wall with respect to 100 parts by weight of the cholesteric liquid crystal is from about 0.1 parts to about 11 parts by weight.Type: ApplicationFiled: May 27, 2009Publication date: July 1, 2010Applicant: FUJI XEROX CO., LTD.Inventors: Chikara MANABE, Naoki HIJI, Takeo KAKINUMA, Tadayoshi OZAKI
-
Publication number: 20100165260Abstract: A liquid crystal-containing composition includes a first cholesteric liquid crystal having a peak wavelength of selective reflection in the range of from 600 nm to 800 nm and encapsulated in a microcapsule and a second cholesteric liquid crystal having a peak wavelength of selective reflection in the range of from 400 nm to 500 nm as the only liquid crystals, and the content of the second cholesteric liquid crystal with respect to the entire cholesteric liquid crystal content is from about 5 weight % to about 40 weight %.Type: ApplicationFiled: May 21, 2009Publication date: July 1, 2010Applicant: Fuji Xerox Co., Ltd.Inventors: Naoki HIJI, Takeo KAKINUMA, Chikara MANABE, Tadayoshi OZAKI
-
Publication number: 20090255985Abstract: A medium writing apparatus obtains information to be written onto a recording medium, converts the information into a suitable writable format, and then writes the converted information onto the recording medium. An ID obtaining section obtains a medium ID from the recording medium, or through an input by the user. The medium ID and information indicating the place of the written information are sent to a server, and then stored as index information correlating them with each other. When the information written onto the recording medium is to be used at a later timing, the medium ID is identified, and the index information is obtained from the server. Therefore, the original information can be obtained so as to be easily reprocessed or reused.Type: ApplicationFiled: June 12, 2009Publication date: October 15, 2009Applicant: Fuji Xerox Co., Ltd.Inventors: Ikutaroh Nagatsuka, Yasunori Saito, Minoru Koshimizu, Daisuke Tsuda, Tsunemasa Mita, Tsutomu Ishii, Kiyoshi Shigehiro, Takeshi Matsunaga, Takeo Kakinuma, Yoshinori Machida, Yasufumi Suwabe, Hiroshi Arisawa, Yasunari Nishikata, Haruo Harada
-
Patent number: 7578429Abstract: A medium writing apparatus obtains information to be written onto a recording medium, converts the information into a suitable writable format, and then writes the converted information onto the recording medium. An ID obtaining section obtains a medium ID from the recording medium, or through an input by the user. The medium ID and information indicating the place of the written information are sent to a server, and then stored as index information correlating them with each other. When the information written onto the recording medium is to be used at a later timing, the medium ID is identified, and the index information is obtained from the server. Therefore, the original information can be obtained so as to be easily reprocessed or reused.Type: GrantFiled: August 20, 2003Date of Patent: August 25, 2009Assignee: Fuji Xerox Co., Ltd.Inventors: Ikutaroh Nagatsuka, Yasunori Saito, Minoru Koshimizu, Daisuke Tsuda, Tsunemasa Mita, Tsutomu Ishii, Kiyoshi Shigehiro, Takeshi Matsunaga, Takeo Kakinuma, Yoshinori Machida, Yasufumi Suwabe, Hiroshi Arisawa, Yasunari Nishikata, Haruo Harada