Patents by Inventor Koichi Toriyama
Koichi Toriyama 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).
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Patent number: 8227157Abstract: The present invention provides a single-layer electrophotographic photoreceptor provided with a single-layer photosensitive layer that adapts to an exposing source emitting a laser beam with wavelengths of from 400 nm to 450 nm inclusive and is laminated on a conductive substrate, the single-layer photosensitive layer comprising: an enamine-type compound that functions as both a charge generation material and a charge transport material and is represented by the following general formula (1); and a perylene-type compound that functions as both an electron-transport material and a sensitizer and is represented by the following general formula (2):Type: GrantFiled: June 17, 2009Date of Patent: July 24, 2012Assignee: Sharp Kabushiki KaishaInventors: Koichi Toriyama, Mami Adachi
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Publication number: 20120003577Abstract: An electrophotographic photoreceptor, comprising a conductive support, an undercoat layer and a photosensitive layer formed in sequence, the electrophotographic photoreceptor characterized in that a coating solution for undercoat layer formation for producing the electrophotographic photoreceptor contains at least a binder resin and metal oxide particles surface-treated with anhydrous silicon dioxide.Type: ApplicationFiled: February 26, 2010Publication date: January 5, 2012Inventors: Satoshi Katayama, Koichi Toriyama, Kimiko Nishi
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Patent number: 7972721Abstract: A heat insulation sheet (16) covers a temperature fuse (10) arranged on a sealing plate (23) of a rechargeable battery (2) so as to provide a shield from heat of resin that is filled in a gap between the rechargeable battery (2) and a circuit substrate (3) to form a primary mold (11) and to prevent destruction of the temperature fuse (10) caused by the heat.Type: GrantFiled: February 6, 2003Date of Patent: July 5, 2011Assignee: Panasonic CorporationInventors: Katsumi Kozu, Takeshi Ishimaru, Yoshiki Osawa, Satoshi Kataoka, Iichiro Mori, Koichi Toriyama, Masahiro Mizuta, Tatsuhisa Chikada
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Publication number: 20110136050Abstract: An electrophotographic photoconductor that is exposed by an exposure light source having a wavelength of 405±20 nm, the electrophotographic photoconductor comprising: a conductive substrate; and at least a charge generation layer and a charge transfer layer stacked in order on the conductive substrate, the charge transfer layer containing, as a charge transfer material, a phenylenediamine compound represented by the following general formula (I): wherein, Ar is an aryl group that may have a substituent, R1, R2 and R3 are a hydrogen atom, a halogen atom, an alkyl group or an alkoxy group, independently, k is an integer from 1 to 5 and l and m are an integer from 1 to 4, the charge generation layer containing a gallium phthalocyanine dimer as a charge generation material.Type: ApplicationFiled: June 7, 2010Publication date: June 9, 2011Inventors: Kanako HIRATA, Koichi Toriyama, Kotaro Fukushima
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Publication number: 20110104600Abstract: A function separation type electrophotographic photoconductor comprising: a conductive support; an undercoat layer formed on the conductive support; a charge generation layer formed on the undercoat layer; and a charge transfer layer formed on the charge generation layer, the undercoat layer containing at least a binder resin and metal oxide microparticles subjected to surface treatment with anhydrous silicon dioxide, the charge transfer layer containing at least a binder resin and an enamine compound represented by the following general formula (1): wherein one or more of R1, R2, R3, R4 and R5 represent a C6-C10 aryl group that may have a substituent; the others each represent hydrogen atom or C1-C4 alkyl, C4-C9 heterocyclic, C7-C16 aralkyl or C11-C16 arylidene alkyl group that may have a substituent; or R2 and R3 together with carbon atoms with which they are combined may form a cyclic or condensed cyclic group that may have a substituent.Type: ApplicationFiled: October 28, 2010Publication date: May 5, 2011Inventors: Takahiro Kurauchi, Satoshi Katayama, Koichi Toriyama
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Patent number: 7927386Abstract: A rechargeable battery (2) and a circuit substrate (3) are connected by lead plates (4, 5) and united by a primary mold (11) that is formed by filling resin therebetween, after which a secondary mold (12) is formed on the outer face by filling resin at necessary locations and a winding sheet (13) is wound around the periphery, thereby forming a battery pack.Type: GrantFiled: September 30, 2008Date of Patent: April 19, 2011Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Katsumi Kozu, Takeshi Ishimaru, Yoshiki Osawa, Satoshi Kataoka, Iichiro Mori, Koichi Toriyama, Masahiro Mizuta, Tatsuhisa Chikada, Yasuhiro Ogawa
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Publication number: 20110085823Abstract: An electrophotographic photoreceptor comprising: a conductive support, a photosensitive layer and an intermediate layer interposed between the conductive support and the photosensitive layer, wherein the intermediate layer contains metal oxide microparticles surface-treated with silicon dioxide anhydride and a binder resin; and the binder resin contains a polyamide resin containing a piperazine-based compound.Type: ApplicationFiled: October 4, 2010Publication date: April 14, 2011Inventors: Satoshi Katayama, Koichi Toriyama, Hiroshi Sugimura
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Publication number: 20100303500Abstract: The present invention therefore provides an image forming apparatus, comprising: a photoconductor; a charge means for charging the photoconductor; an exposure means for irradiating a surface of the photoconductor with light to form an electrostatic latent image; a development means for developing the electrostatic latent image formed; a transfer means for transferring the image developed onto a paper sheet; and a discharge means for irradiating the surface of the photoconductor with light to eliminate charges, wherein the photoconductor contains a titanylphthalocyanine having absorption bands in a wavelength region of 380 nm to 420 nm and a wavelength region of 600 nm to 850 nm as a charge generation material, the exposure means irradiates the surface of the photoconductor with light having a wavelength of 380 nm to 420 nm to form the electrostatic latent image, and the discharge means irradiates the surface of the photoconductor with light having a wavelength of 600 nm to 850 nm to eliminate the charges.Type: ApplicationFiled: May 19, 2010Publication date: December 2, 2010Inventors: Takayuki YAMANAKA, Koichi Toriyama, Kotaro Fukushima, Masanori Matsumoto
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Patent number: 7759001Abstract: A circuit substrate (3) being electrically connected to a rechargeable battery (2) is arranged upon a sealing plate (23) with a gap therebetween and united with the rechargeable battery (2) by filling resin in the gap. A primary mold (11) formed by the resin is firmly retained by undercut portions formed in engaging protrusions (26). The engaging protrusions (26) may be formed by welding separate engaging members (126, 126a, 126b, 126c, 66, 68).Type: GrantFiled: February 6, 2003Date of Patent: July 20, 2010Assignee: Panasonic CorporationInventors: Katsumi Kozu, Takeshi Ishimaru, Satoshi Kataoka, Koichi Toriyama, Masahiro Mizuta, Masaaki Kaneda, Kenjin Masumoto
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Patent number: 7693453Abstract: An image forming apparatus having excellent cleaning property for an electrophotographic photoreceptor and capable of forming a high-quality, high-resolution image. A surface free energy (?) of a photoreceptor (2), which is provided in the image forming apparatus (1), is set to 20 to 35 mN/m. A volume average diameter of toner particles included in a developer stored in a developing unit (29) to develop an electrostatic latent image and form a toner image is set to 4-7 ?m When ? of the photoreceptor (2) is set to within a small range as the particle size of toner is reduced, even small-particle-size toner having increased specific surface area and largely affected by a inter-molecular force is limited in adhesion to the surface of the photoreceptor (2) to provide a good cleaning property and a high-quality image can be formed.Type: GrantFiled: February 13, 2004Date of Patent: April 6, 2010Assignee: Sharp Kabushiki KaishaInventors: Mikio Kakui, Koichi Toriyama, Kotaro Fukushima, Hisayuki Utsumi, Sayaka Fujita, Akiko Uchino, Katsuru Matsumoto
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Publication number: 20100014889Abstract: The present invention provides a single-layer electrophotographic photoreceptor provided with a single-layer photosensitive layer that adapts to an exposing source emitting a laser beam with wavelengths of from 400 nm to 450 nm inclusive and is laminated on a conductive substrate, the single-layer photosensitive layer comprising: an enamine-type compound that functions as both a charge generation material and a charge transport material and is represented by the following general formula (1); and a perylene-type compound that functions as both an electron-transport material and a sensitizer and is represented by the following general formula (2):Type: ApplicationFiled: June 17, 2009Publication date: January 21, 2010Inventors: Koichi TORIYAMA, Mami Adachi
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Publication number: 20090038145Abstract: A rechargeable battery (2) and a circuit substrate (3) are connected by lead plates (4, 5) and united by a primary mold (11) that is formed by filling resin therebetween, after which a secondary mold (12) is formed on the outer face by filling resin at necessary locations and a winding sheet (13) is wound around the periphery, thereby forming a battery pack.Type: ApplicationFiled: September 30, 2008Publication date: February 12, 2009Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Katsumi Kozu, Takeshi Ishimaru, Yoshiki Osawa, Satoshi Kataoka, Iichiro Mori, Koichi Toriyama, Masahiro Mizuta, Tatsuhisa Chikada, Yasuhiro Ogawa
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Patent number: 7429432Abstract: A rechargeable battery (2) and a circuit substrate (3) are connected by lead plates (4, 5) and united by a primary mold (11) that is formed by filling resin therebetween, after which a secondary mold (12) is formed on the outer face by filling resin at necessary locations and a winding sheet (13) is wound around the periphery, thereby forming a battery pack.Type: GrantFiled: February 6, 2003Date of Patent: September 30, 2008Assignee: Matsushita Electric Industrial Co. Ltd.Inventors: Katsumi Kozu, Takeshi Ishimaru, Yoshiki Osawa, Satoshi Kataoka, Iichiro Mori, Koichi Toriyama, Masahiro Mizuta, Tatsuhisa Chikada, Yasuhiro Ogawa
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Patent number: 7429439Abstract: An electrophotographic photoreceptor of excellent durability having high sensitivity and light responsiveness, not suffering from lowering of the electric characteristics by exposure to light, change of circumstance, or repetitive use, and excellent in the cleaning property and not suffering from lowering of the picture quality of formed images for a long times, in which an enamine compound represented by the general formula (1), for example, an enamine compound represented by the following structural formula (1-1) is incorporated in a photosensitive layer 14, and the surface energy (?) on the surface of the photosensitive layer 14 is set to 20.0 mN/m or more and 35.Type: GrantFiled: November 19, 2004Date of Patent: September 30, 2008Assignee: Sharp Kabushiki KaishaInventors: Koichi Toriyama, Kotaro Fukushima, Takatsugu Obata, Takuya Arimura
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Patent number: 7387862Abstract: An electrophotographic photoreceptor is provided that in excellent in the electrical characteristics such as the charging property, the sensitivity and the responsiveness, the oxidizing gas resistance such as the ozone resistance and the nitrogen oxide resistance, and the electrical durability such that even after repetition use the foregoing excellent electrical characteristics are not deteriorated. A photosensitive layer of an electrophotographic photoreceptor contains an amine compound represented by the general formula (1).Type: GrantFiled: May 23, 2005Date of Patent: June 17, 2008Assignee: Sharp Kabushiki KaishaInventors: Koichi Toriyama, Kotaro Fukushima, Hisayuki Utsumi
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Publication number: 20080124641Abstract: An electrophotographic photoreceptor, comprising: an undercoat layer and a photosensitive layer formed in this order on a conductive support, wherein the undercoat layer contains a titanium oxide [P] consisting of a needle-like titanium oxide [A] and a spherical titanium oxide [B] and a binder resin [R], and the compounding ratio (by weight) [A]/[B] of the needle-like titanium oxide [A] to the spherical titanium oxide [B] is 60/40 to 90/10.Type: ApplicationFiled: November 16, 2007Publication date: May 29, 2008Applicant: SHARP KABUSHIKI KAISHAInventors: Koichi TORIYAMA, Masaki HASHIMOTO
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Patent number: 7248021Abstract: Constructing a battery pack by: providing a resin sheet (40) to cover a release opening (20a) of a safety vent (20) formed on a sealing plate (23); integrating a rechargeable battery (2) and a circuit substrate (3) with a primary molding (11) by filing a resin between the rechargeable battery (2) and the circuit substrate (3); and then forming a secondary molding (12). In such constructed battery pack, an ejected gas, at the operation of the safety vent (20) of the battery pack, is externally released through an interface between the resin and metal.Type: GrantFiled: February 17, 2003Date of Patent: July 24, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Katsumi Kozu, Takeshi Ishimaru, Satoshi Kataoka, Koichi Toriyama, Iichiro Mori
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Publication number: 20070160921Abstract: An electrophotographic photoconductor of the invention comprising: an conductive support; a light-sensitive layer formed on the conductive support and containing a charge generating material and a charge transport material; and a surface protective layer formed on the light-sensitive layer and made of a resin composition, wherein the resin composition constituting the surface protective layer contains an amine compound represented by the following formula (1): wherein R1 and R2 are, the same or different, each an alkyl group or an allyl group which may have a substituent or a heterocyclic residue to be formed through or not through a nitrogen atom or an oxygen atom together with the nitrogen atom to which R1 and R2 are bonded, R3 and R4 are, the same or different, each an alkyl group having a substituent and n denotes 1 or 2, provided that when n is 1, X is a hydrogen atom, a halogen atom, or an alkyl group, a hydroxyl group or a mercapto group which may have a substituent, or a ring optionally containingType: ApplicationFiled: December 21, 2006Publication date: July 12, 2007Applicant: Sharp Kabushiki KaishaInventors: Hiroshi Sugimura, Kotaro Fukushima, Koichi Toriyama
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Publication number: 20060210311Abstract: An object of the invention is to provide an image forming apparatus being excellent in cleaning property for an electrophotographic photoreceptor and capable of forming a high-quality, high-resolution image. A surface free energy (?) of a photoreceptor (2) which is provided in the image forming apparatus (1) and is exposed to a light corresponding to image information for formation of an electrostatic latent image is set to 20 to 35 mN/m. A volume average diameter of a toner particles included in a developer stored in a developing unit (29) to develop an electrostatic latent image and form a toner image is set to 4-7 mum.Type: ApplicationFiled: February 13, 2004Publication date: September 21, 2006Inventors: Mikio Kakui, Koichi Toriyama, Kotaro Fukushima, Hisayuki Utsumi, Sayaka Fujita, Akiko Uchino
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Patent number: 7074531Abstract: In an electrophotographic photoreceptor including a conductive substrate and a photoreceptive layer formed on the conductive substrate wherein the photoreceptive layer charged uniformly is exposed to light corresponding to an image information to form an electrostatic latent image, the surface free energy (?) is determined to be at least 20 mN/m and at most 35 mN/m. The determination of ? on the surface of the photoreceptor 1 in the appropriate range makes it possible to suppress excessive adhesion of a toner to the surface of the photoreceptor, to suppress adhesion of foreign matters such as a paper powder and to make easy the separation thereof from the surface, which results in improving the cleanability of the photoreceptor. Since the image is formed with the photoreceptor 1 having always the clean surface, the damage or the decrease in image quality does not occur over a long period of time.Type: GrantFiled: December 22, 2003Date of Patent: July 11, 2006Assignee: Sharp Kabushiki KaishaInventors: Kotaro Fukushima, Mikio Kakui, Koichi Toriyama, Hisayuki Utsumi