Patents by Inventor Makoto Kambayashi
Makoto Kambayashi 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: 8465896Abstract: A black toner has a toner particle including at least a resin (a) having a polyester as a main component, carbon black, and a wax, and a fine inorganic particle. When the Tgs of the black toner measured by DSC at temperature rise rate of 0.5° C./min and 4.0° C./min are defined as Tg(0.5) and Tg(4.0) respectively, Tg(0.5) is 35.0 to 60.0° C. and the difference between Tg(4.0) and Tg(0.5) is 2.0 to 10.0° C. When preparing a solution of which the black toner is dissolved in ethyl acetate and defined the concentration thereof as Cb1 (mg/mL) and the light absorbance thereof at 600 nm wavelength as A600, A600/Cb1 is less than 0.15. When preparing a solution of which the black toner is dissolved in chloroform and defined the concentration thereof as Cb2 (mg/mL) and the light absorbance thereof at 600 nm wavelength as A600, A600/Cb2 is 2.00 to 6.55.Type: GrantFiled: February 19, 2010Date of Patent: June 18, 2013Assignee: Canon Kabushiki KaishaInventors: Ayako Sekikawa, Atsushi Tani, Takaaki Kaya, Shigeto Tamura, Makoto Kambayashi
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Patent number: 8460845Abstract: Provided is a cyan toner which, while being a capsule-type toner having excellent low-temperature fixability, has excellent offset resistance and charging performance and can obtain high-quality images. A cyan toner having at least a resin (a) having a polyester as a main component, a colorant, and a wax, in which glass transition temperatures (° C.) Tg(0.5) and Tg(4.0) obtained at a rate of temperature increase of 0.5° C./min or 4.0° C./min satisfy 40.0?Tg(0.5)?60.0 and 2.0?Tg(4.0)?Tg(0.5)?10.0, and wherein, when the concentration of the cyan toner in an ethyl acetate dispersion is Cc1 (mg/ml), and the light absorbance at a wavelength of 712 nm of the dispersion is A(ethyl acetate)712, A(ethyl acetate)712/Cc1<0.15 is satisfied, and wherein, when the concentration of the cyan toner in a chloroform solution is Cc2 (mg/ml), and the light absorbance at a wavelength of 712 nm of the solution is A(chloroform)712, 2.00<A(chloroform)712/Cc2<8.15 is satisfied.Type: GrantFiled: November 12, 2009Date of Patent: June 11, 2013Assignee: Canon Kabushiki KaishaInventors: Takaaki Kaya, Ayako Sekikawa, Ryoichi Fujita, Shigeto Tamura, Makoto Kambayashi
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Publication number: 20110045398Abstract: A black toner has a toner particle including at least a resin (a) having a polyester as a main component, carbon black, and a wax, and a fine inorganic particle. When the Tgs of the black toner measured by DSC at temperature rise rate of 0.5° C./min and 4.0° C./min are defined as Tg(0.5) and Tg(4.0) respectively, Tg(0.5) is 35.0 to 60.0° C. and the difference between Tg(4.0) and Tg(0.5) is 2.0 to 10.0° C. When preparing a solution of which the black toner is dissolved in ethyl acetate and defined the concentration thereof as Cb1 (mg/mL) and the light absorbance thereof at 600 nm wavelength as A600, A600/Cb1 is less than 0.15. When preparing a solution of which the black toner is dissolved in chloroform and defined the concentration thereof as Cb2 (mg/mL) and the light absorbance thereof at 600 nm wavelength as A600, A600/Cb2 is 2.00 to 6.55.Type: ApplicationFiled: February 19, 2010Publication date: February 24, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Ayako Sekikawa, Atsushi Tani, Takaaki Kaya, Shigeto Tamura, Makoto Kambayashi
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Publication number: 20100273102Abstract: The color toner has capsule toner particles each having a surface layer (B) mainly formed of a resin (b) on the surface of a toner base particle (A), the toner base particle (A) containing at least a binder resin (a), a colorant, and a wax, in which (1) a temperature Tp at which a curve 1 obtained by plotting a temperature on an axis of abscissa and the common logarithm of a value obtained by dividing the loss modulus G? of the color toner by the unit of the loss modulus on an axis of ordinate shows a maximum is present, and Tp satisfies the relationship of 40° C.?Tp?60° C., (2) a temperature Ts at which a curve 2 obtained by differentiating the curve 1 with respect to the temperature twice shows a local minimum is present in the temperature range of Tp+10 (° C.) to Tp+40 (° C.), and (3) a ratio G?(Ts)/G?(Ts+5) in the curve 1 is larger than 3.0.Type: ApplicationFiled: July 8, 2010Publication date: October 28, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Shigeto Tamura, Takaaki Kaya, Ryoichi Fujita, Makoto Kambayashi
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Patent number: 7794909Abstract: An object of the present invention is to provide a spherical toner that has a sharp particle size distribution and a small particle diameter. This is a capsule-type toner that exhibits an excellent low-temperature fixability, while at the same time having a high offset resistance and excellent charging properties and having the ability to provide a high-quality image in which the characters, lines, and dots are precisely defined. The object is achieved by a toner comprising a toner particle that comprises at least (a) resin having polyester as the main component, colorant, wax, and (b) urethane resin, wherein the hydroxyl value per specific surface area of the toner particle is fall into the specific range, and wherein a Tg(0.5) and a Tg(4.0)-Tg(0.5) of the toner fall into specific range.Type: GrantFiled: July 6, 2009Date of Patent: September 14, 2010Assignee: Canon Kabushiki KaishaInventors: Takaaki Kaya, Shigeto Tamura, Ryoichi Fujita, Ayako Sekikawa, Makoto Kambayashi
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Patent number: 7794908Abstract: Provided is magnetic toner including capsule type toner particles each having a surface layer (B) on a surface of a toner base particle (A) containing at least a binder resin (a) mainly formed of a polyester, a magnetic substance, and a wax, in which, the surface layer (B) includes a resin (b), and the resin (b) includes a resin selected from the group consisting of a polyester resin (b1), a vinyl resin (b2), and a urethane resin (b3); a glass transition temperature Tg(a) of the binder resin (a) and a glass transition temperature Tg(b) of the resin (b) satisfy a relationship of Tg(a)<Tg(b); a magnetization (?t) in an external magnetic field of 79.6 kA/m of the magnetic toner is 12 Am2/kg or more and 30 Am2/kg or less; and an average circularity of the toner is 0.960 or more and 1.000 or less.Type: GrantFiled: March 2, 2009Date of Patent: September 14, 2010Assignee: Canon Kabushiki KaishaInventors: Takaaki Kaya, Shigeto Tamura, Ryoichi Fujita, Makoto Kambayashi, Takeshi Ikeda
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Patent number: 7776501Abstract: The color toner has capsule type toner particles each having a surface layer (B) mainly formed of a resin (b) on the surface of a toner base particle (A) containing at least a binder resin (a), a colorant, and a wax, in which (1) a temperature Tp at which a curve 1 obtained by plotting a temperature on an axis of abscissa and the common logarithm of a value obtained by dividing the loss modulus G? of the color toner by the unit of the loss modulus on an axis of ordinate shows a maximum is present, and Tp satisfies the relationship of 40° C.?Tp?60° C., (2) a temperature Ts at which a curve 2 obtained by differentiating the curve 1 with respect to the temperature twice shows a local minimum is present in the temperature range of Tp+10(° C.) to Tp+40(° C.), and (3) a ratio G?(Ts)/G?(Ts+5) in the curve 1 is larger than 3.0.Type: GrantFiled: October 3, 2008Date of Patent: August 17, 2010Assignee: Canon Kabushiki KaishaInventors: Shigeto Tamura, Takaaki Kaya, Ryoichi Fujita, Makoto Kambayashi
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Publication number: 20100062355Abstract: Provided is a cyan toner which, while being a capsule-type toner having excellent low-temperature fixability, has excellent offset resistance and charging performance and can obtain high-quality images. A cyan toner having at least a resin (a) having a polyester as a main component, a colorant, and a wax, in which glass transition temperatures (° C.) Tg(0.5) and Tg(4.0) obtained at a rate of temperature increase of 0.5° C./min or 4.0° C./min satisfy 40.0?Tg(0.5)?60.0 and 2.0?Tg(4.0)?Tg(0.5)?10.0, and wherein, when the concentration of the cyan toner in an ethyl acetate dispersion is Cc1 (mg/ml), and the light absorbance at a wavelength of 712 nm of the dispersion is A(ethyl acetate)712, A(ethyl acetate)712/Cc1<0.15 is satisfied, and wherein, when the concentration of the cyan toner in a chloroform solution is Cc2 (mg/ml), and the light absorbance at a wavelength of 712 nm of the solution is A(chloroform)712, 2.00<A(chloroform)712/Cc2<8.15 is satisfied.Type: ApplicationFiled: November 12, 2009Publication date: March 11, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Takaaki Kaya, Ayako Sekikawa, Ryoichi Fujita, Shigeto Tamura, Makoto Kambayashi
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Publication number: 20090263738Abstract: An object of the present invention is to provide a spherical toner that has a sharp particle size distribution and a small particle diameter. This is a capsule-type toner that exhibits an excellent low-temperature fixability, while at the same time having a high offset resistance and excellent charging properties and having the ability to provide a high-quality image in which the characters, lines, and dots are precisely defined. The object is achieved by a toner comprising a toner particle that comprises at least (a) resin having polyester as the main component, colorant, wax, and (b) urethane resin, wherein the hydroxyl value per specific surface area of the toner particle is fall into the specific range, and wherein a Tg(0.5) and a Tg(4.0)-Tg(0.5) of the toner fall into specific range.Type: ApplicationFiled: July 6, 2009Publication date: October 22, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Takaaki Kaya, Shigeto Tamura, Ryoichi Fujita, Ayako Sekikawa, Makoto Kambayashi
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Publication number: 20090170021Abstract: Provided is magnetic toner including capsule type toner particles each having a surface layer (B) on a surface of a toner base particle (A) containing at least a binder resin (a) mainly formed of a polyester, a magnetic substance, and a wax, in which, the surface layer (B) includes a resin (b), and the resin (b) includes a resin selected from the group consisting of a polyester resin (b1), a vinyl resin (b2), and a urethane resin (b3); a glass transition temperature Tg(a) of the binder resin (a) and a glass transition temperature Tg(b) of the resin (b) satisfy a relationship of Tg(a)<Tg(b); a magnetization (?t) in an external magnetic field of 79.6 kA/m of the magnetic toner is 12 Am2/kg or more and 30 Am2/kg or less; and an average circularity of the toner is 0.960 or more and 1.000 or less.Type: ApplicationFiled: March 2, 2009Publication date: July 2, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Takaaki Kaya, Shigeto Tamura, Ryoichi Fujita, Makoto Kambayashi, Takeshi Ikeda
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Publication number: 20090035685Abstract: The color toner has capsule type toner particles each having a surface layer (B) mainly formed of a resin (b) on the surface of a toner base particle (A) containing at least a binder resin (a), a colorant, and a wax, in which (1) a temperature Tp at which a curve 1 obtained by plotting a temperature on an axis of abscissa and the common logarithm of a value obtained by dividing the loss modulus G? of the color toner by the unit of the loss modulus on an axis of ordinate shows a maximum is present, and Tp satisfies the relationship of 40° C.?Tp?60° C., (2) a temperature Ts at which a curve 2 obtained by differentiating the curve 1 with respect to the temperature twice shows a local minimum is present in the temperature range of Tp+10(° C.) to Tp+40(° C.), and (3) a ratio G?(Ts)/G?(Ts+5) in the curve 1 is larger than 3.0.Type: ApplicationFiled: October 3, 2008Publication date: February 5, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Shigeto Tamura, Takaaki Kaya, Ryoichi Fujita, Makoto Kambayashi
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Patent number: 7080390Abstract: A power transmitting device for a stepping motor comprises: a stepping motor commonly serving as a power source for a pickup moving mechanism of a light load and a power source for a disk transferring mechanism of a heavy load; switching mechanism for a switching path for transmitting the power from the motor between the first path, via which the power is transmitted to the pickup moving mechanism, and a second path, via which the power is transmitted to the disk transferring mechanism via power transmitting gear mechanisms; and transmission prohibiting mechanism for prohibiting the transmission of the power from the stepping motor to the disk transferring mechanism at the beginning of the power transmission via the second path.Type: GrantFiled: June 18, 2003Date of Patent: July 18, 2006Assignee: Matsushita Electric Industrial Co., Ltd.,Inventors: Yasunari Toyama, Makoto Kambayashi, Youtarou Yamauchi
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Publication number: 20040032818Abstract: A power transmitting device for a stepping motor comprises: a stepping motor commonly serving as a power source for a pickup moving mechanism of a light load and a power source for a disk transferring mechanism of a heavy load; switching mechanism for a switching path for transmitting the power from the motor between the first path, via which the power is transmitted to the pickup moving mechanism, and a second path, via which the power is transmitted to the disk transferring mechanism via power transmitting gear mechanisms; and transmission prohibiting mechanism for prohibiting the transmission of the power from the stepping motor to the disk transferring mechanism at the beginning of the power transmission via the second path.Type: ApplicationFiled: June 18, 2003Publication date: February 19, 2004Inventors: Yasunari Toyama, Makoto Kambayashi, Youtarou Yamauchi
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Patent number: 5970044Abstract: A drive mechanism for moving a clamper arm into a standby position of the clamper is simplified and the possible occurrence of the vibration of the clamper in the standby state and the falling of the disc out of the tray in the transferring stage are prevented with a relatively simple construction. Provided is a disc clamping device having a turntable and a clamper which faces the turntable, operating to rotatively support a disc on the turntable with the disc pressed by the clamper, the device being provided with a clamper arm which rotatably supports the clamper and is able to pivot approximately in the direction of its axis of rotation, moving the clamper between a disc pressing position and a standby position, and a clamper arm moving means having a clamper urging plate which pivots the clamper arm as engaged with this and urges the clamper arm toward the turntable side at least in the disc pressing position, whereby the disc is urged against the turntable by the urging force of this clamper urging plate.Type: GrantFiled: December 16, 1997Date of Patent: October 19, 1999Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Makoto Kambayashi, Shingo Kage, Yasunari Toyama, Nobuyuki Miroku
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Patent number: 5933404Abstract: Provided is a disc changer capable of being made compact with a relatively simple construction and infallibly avoiding the interference of a disc transfer member with the other drive components within a limited space. The disc changer 1 is provided with a disc lodging magazine 50, a disc recording and reproducing unit 10 and a disc transfer unit 30 which transfers a disc 55 between the magazine and the recording and reproducing unit. The disc transfer unit is provided with a transfer member 31 which is engaged with a disc retaining tray 56, extends in a disc transfer direction and is elastically deformable in a direction perpendicular to the disc transfer direction, driving mechanism 34, 35 for driving the transfer member, and a guide section 37 which guides the slide operation of the transfer member. The transfer member is elastically deformed by a specified quantity at its middle portion in the above perpendicular direction so that its portion corresponding to the magazine is located outside the magazine.Type: GrantFiled: August 27, 1997Date of Patent: August 3, 1999Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shingo Kage, Makoto Kambayashi, Yasunari Toyama
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Patent number: 5930223Abstract: A disc or tray is prevented from inadvertently springing out of a magazine when the magazine is mounted or an external force is exerted. Provided is a disc changer having a magazine mounting section, a recording and reproducing unit, a slider which selects a desired disc from a plurality of discs lodged in a magazine and a transfer arm which draws the selected disc out of the magazine and loads the disc on the recording and reproducing unit 10. The disc changer is provided with a lock member which prevents each disc from springing out of the magazine at least in a disc non-selective state in which the slider does not execute disc selection, and the mounting of the magazine in the magazine mounting section is executed when the slider 21 is in the disc non-selective state.Type: GrantFiled: August 27, 1997Date of Patent: July 27, 1999Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yasunari Toyama, Shingo Kage, Makoto Kambayashi
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Patent number: 5478362Abstract: A method of producing a spiral electrode group comprising a step for preparing a beltlike positive electrode plate whose thickness and width PT are PW respectively, a beltlike negative electrode plate whose thickness and width are NT and NW respectively, a beltlike first separator whose width is longer than PW+2PT, and a beltlike second separator whose width is longer than NW+2NT; a second step of making a set of the first separator and the positive electrode plate by putting a central part of the first separator and a surface of the positive electrode plate together, and by putting each horizontal end of the first separator and each side surface of the positive electrode plate together; a third step of making a set of the second separator and the negative electrode plate by putting a central part of the second separator and a surface of the negative electrode plate together, and by putting each horizontal end of the second separator and each side surface of the negative electrode plate together; and a fourthType: GrantFiled: January 27, 1994Date of Patent: December 26, 1995Assignee: Sanyo Electric Co., Ltd.Inventors: Kazuyoshi Oota, Kenji Inagaki, Makoto Kambayashi
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Patent number: 4887349Abstract: A method of manufacturing an electrode for a battery comprises steps of preparing a substrate formed by a metal porous body having three-dimensionally continuous pores, a slurry mainly composed of active material powder to be filled into the pores of the substrate, a vessel for containing the slurry and a filling roller located to be at least partially dipped but not completely submerged in the slurry contained in the vessel, continuously supplying the substrate onto the filling roller so that the substrate is in contact with the filling roller in at least a point not being submerged in the slurry and rotating the filling roller in such a manner that the speed of outer peripheral surface of the filling roller facing the substrate is higher than the travel speed of the substrate thereby to fill the slurry into the pores of the substrate.Type: GrantFiled: July 29, 1988Date of Patent: December 19, 1989Assignee: Sanyo Electric Co., Ltd.Inventors: Makoto Kambayashi, Kensuke Nakatani, Kazuaki Ozaki, Masahito Tomida, Hiroshi Haraguchi, Takeo Hamamatsu