Patents by Inventor Yoshiharu Taniyama
Yoshiharu Taniyama 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: 7427060Abstract: The sheet paper conveying device comprises: paper supply rollers at least part of which rotate to convey the sheet paper in a prescribed direction; separation rollers that rotate in the direction reverse to the sheet paper conveying direction or rotates jointly with the paper supply roller; auxiliary rollers that clamp the sheet paper jointly with the paper supply rollers and freely rotate; a first pressurizing member to press the separation rollers against the paper supply roller side; and a second pressurizing member to press the auxiliary roller against the paper supply roller side.Type: GrantFiled: July 27, 2005Date of Patent: September 23, 2008Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki KaishaInventor: Yoshiharu Taniyama
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Publication number: 20050258587Abstract: The sheet paper conveying device comprises: paper supply rollers at least part of which rotate to convey the sheet paper in a prescribed direction; separation rollers that rotate in the direction reverse to the sheet paper conveying direction or rotates jointly with the paper supply roller; auxiliary rollers that clamp the sheet paper jointly with the paper supply rollers and freely rotate; a first pressurizing member to press the separation rollers against the paper supply roller side; and a second pressurizing member to press the auxiliary roller against the paper supply roller side.Type: ApplicationFiled: July 27, 2005Publication date: November 24, 2005Inventor: Yoshiharu Taniyama
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Patent number: 6932337Abstract: The sheet paper conveying device comprises: paper supply rollers at least part of which rotate to convey the sheet paper in a prescribed direction; separation rollers that rotate in the direction reverse to the sheet paper conveying direction or rotates jointly with the paper supply roller; auxiliary rollers that clamp the sheet paper jointly with the paper supply rollers and freely rotate; a first pressurizing member to press the separation rollers against the paper supply roller side; and a second pressurizing member to press the auxiliary roller against the paper supply roller side.Type: GrantFiled: February 24, 2003Date of Patent: August 23, 2005Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki KaishaInventor: Yoshiharu Taniyama
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Publication number: 20040245705Abstract: There is provided a method in which a conveyance force of a feed roller applied to recording paper is maintained constant in a period from the start to the end of use of the feed roller and a separation roller. The separation roller pressing force control method according to the present invention is such that a pressing force of the separation roller applied to the feed roller is set to be low in a variable range (Sa) such as the start of use in which the coefficient of friction of the feed roller is high, so that the conveyance force applied to the recording paper is not too large. As the coefficient of friction gradually decreases in accordance with the use of the feed roller, the pressing force of the separation roller is made to be gradually raised, thereby increasing the conveyance force applied to the recording paper and retaining it in a stable area Sb.Type: ApplicationFiled: June 9, 2003Publication date: December 9, 2004Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventor: Yoshiharu Taniyama
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Publication number: 20040164478Abstract: The sheet paper conveying device comprises: paper supply rollers at least part of which rotate to convey the sheet paper in a prescribed direction; separation rollers that rotate in the direction reverse to the sheet paper conveying direction or rotates jointly with the paper supply roller; auxiliary rollers that clamp the sheet paper jointly with the paper supply rollers and freely rotate; a first pressurizing member to press the separation rollers against the paper supply roller side; and a second pressurizing member to press the auxiliary roller against the paper supply roller side.Type: ApplicationFiled: February 24, 2003Publication date: August 26, 2004Applicant: TOSHIBA TEC KABUSHIKI KAISHAInventor: Yoshiharu Taniyama
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Patent number: 6587648Abstract: The developer supply device includes a loading unit for loading a supply container for storing a developer for supply, a detection mechanism for detecting whether there is a projection for displaying that the developer is a regular product on the outer peripheral surface of the supply container loaded in the loading unit or not, and a driving mechanism for rotating the loaded supply container and supplying the developer to the device to be supplied on the basis of detection of the projection by the detector.Type: GrantFiled: December 3, 2001Date of Patent: July 1, 2003Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki KaishaInventor: Yoshiharu Taniyama
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Patent number: 6308036Abstract: An image forming system has a developing device for causing a toner to adhere to a latent image, which is formed on a photosensitive material drum, to form a visible image; a toner supply device for supplying a toner, which is housed in a toner receiving container, to the developing device; a toner removing device for removing a remaining toner after the visible image on the photosensitive material drum is transferred to a transfer paper; and a waste toner container for accumulating therein a waste toner removed by the toner removing device, and the waste toner container has a restraint member for enabling attaching and detaching said toner container when said toner container and said waste toner container are in their special positional relation.Type: GrantFiled: February 18, 2000Date of Patent: October 23, 2001Assignee: Toshiba Tec Kabushiki KaishaInventors: Yoshiharu Taniyama, Shinichi Itoh
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Patent number: 6308017Abstract: An image forming system has: a developing device for causing a toner to adhere to a latent image, which is formed on a photosensitive material drum, to form a visible image; a toner supply device for supplying a toner, which is housed in a toner container, to the developing device; a toner removing device for removing a remaining toner after the visible image on the photosensitive material drum is transferred to a transfer paper; a waste toner container for accumulating therein a waste toner removed by the toner removing device; and an oscillating mechanism for oscillating the waste toner container. Thus, the waste toner in the waste toner container can be efficiently accumulated, so that the system can be miniaturized.Type: GrantFiled: February 18, 2000Date of Patent: October 23, 2001Assignee: Toshiba TEC Kabushiki KaishaInventors: Yoshiharu Taniyama, Noriyuki Umezawa, Shinichi Itoh
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Patent number: 6290221Abstract: A sheet stacking and conveying unit that have a first end and a second end includes: a sheet stacker to stack sheets conveyed in the first direction in order; a conveyor to convey a lowest stacked sheet in the second direction that is opposite to the first direction by contacting the lower surface of the sheet; a sheet pressing member to apply a specified pressing force to a conveyor via a sheet by contacting the top of a sheet stacked in a stacker and a receiving portion provided to a sheet pressing member and to receive the first end of a sheet that is next stacked in a stacker. Further, this unit includes a driving mechanism that drives a sheet pressing member, drops a sheet received by a receiving portion on the top of a conveyor, clamps it between a conveyor and a sheet pressing member and receives a sheet that is next conveyed to a stacker by a receiving portion.Type: GrantFiled: July 14, 1999Date of Patent: September 18, 2001Assignees: Toshiba Tec Kabushiki Kaisha, Kabushiki Kaisha ToshibaInventor: Yoshiharu Taniyama
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Patent number: 6259877Abstract: A toner supply device includes: a toner cartridge having a cylindrical container with a spiral protruding portion therein, and a cap having a toner discharging hole; and a drive unit for supplying a toner from the toner discharging hole while gripping and rotating the cap of the toner cartridge. A positioning portion is formed on the outer peripheral surface of the base end side of the cylindrical container, and a recessed portion engaging the positioning portion is formed in an inlet holder. The drive unit includes: a holder and a holder cover, which are disassembled vertically; a cup-shaped holder guide, rotatably provided in the holder and holder cover, for gripping the cap at a position, at which the holder guide is communicated with the toner discharging hole; a motor for applying torque to the holder guide; and a drive gear for transmitting torque of the motor to the holder guide.Type: GrantFiled: February 18, 2000Date of Patent: July 10, 2001Assignee: Toshiba Tec Kabushiki KaishaInventors: Yoshiharu Taniyama, Shinichi Itoh
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Patent number: 6256470Abstract: A toner supply device includes a toner cartridge comprising a cylindrical container having a spiral protruding portion therein, and a cap having a toner discharging hole; and a drive unit for supplying a toner from the toner discharging hole while gripping and rotating the cap of the toner cartridge. A positioning portion is formed on the outer peripheral surface of the base end side of the cylindrical container, and a recessed portion engaging the positioning portion is formed in an inlet holder. The drive unit includes a holder and a holder cover, which are disassembled vertically; a cup-shaped holder guide, rotatably provided in the holder and holder cover, for gripping the cap at a position, at which the holder guide is communicated with the toner discharging hole; a motor for applying torque to the holder guide; and a drive gear for transmitting torque of the motor to the holder guide. A gripping handle is provided on the bottom of the cylindrical container of the toner cartridge.Type: GrantFiled: March 10, 2000Date of Patent: July 3, 2001Assignee: Toshiba Tec Kabushiki KaishaInventors: Yoshiharu Taniyama, Shinichi Ito
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Patent number: 6256469Abstract: A toner supply device includes a toner cartridge. The toner cartridge includes a cylindrical container having a spiral protruding portion therein, and a cap having a toner discharging hole. The toner supply device also includes a drive unit for supplying a toner from the toner discharging hole while gripping and rotating the cap of the toner cartridge. A positioning portion is formed on the outer peripheral surface of the base end side of the cylindrical container, and a recessed portion engaging the positioning portion is formed in an inlet holder. The drive unit includes a holder and a holder cover, which are disassembled vertically, a cup-shaped holder guide, rotatably provided in the holder and holder cover, for gripping the cap at a position, at which the holder guide is communicated with the toner discharging hole, a motor for applying torque to the holder guide, and a drive gear for transmitting torque of the motor to the holder guide.Type: GrantFiled: February 18, 2000Date of Patent: July 3, 2001Assignee: Toshiba Tec Kabushiki KaishaInventors: Yoshiharu Taniyama, Noriyuki Umezawa, Shinichi Itoh
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Patent number: D447167Type: GrantFiled: November 9, 2000Date of Patent: August 28, 2001Assignee: Toshiba Tec Kabushiki KaishaInventor: Yoshiharu Taniyama
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Patent number: RE40021Abstract: A developer cartridge which is rotatably mounted in the developing unit of an image forming apparatus, and supplies a developer to the developing unit while rotating includes a cylindrical cartridge main body having a developer outlet hole in the outer surface near one end, and a ring-like cartridge-side shutter which is fitted on the outer surface near one end of the cylindrical cartridge main body to be movable along the rotating shaft of the cylindrical cartridge main body between a position where the developer outlet hole is opened and a position where the developer outlet hole is closed. The developing unit has a guide for inserting the developer cartridge and a driving unit for rotating the developer cartridge, and the guide has a main body-side shutter with a hole.Type: GrantFiled: December 24, 2003Date of Patent: January 22, 2008Assignee: Toshiba Tec Kabushiki KaishaInventors: Tokihiko Ise, Yoshiharu Taniyama, Shinichi Itoh
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Patent number: RE40058Abstract: A method and apparatus for discriminating bottle types, for stirring the toner, and for detecting the amount of toner remaining in the toner bottle. A toner bottle is adapted to fit the apparatus for discriminating toner bottle types, and a toner bottle is adapted for the apparatus for stirring toner. The genuineness of the toner bottle product is checked by sensing a rib assumed to be formed with a predetermined length on the outer surface of the toner bottle. Toner is stirred by continuously rotating the toner bottle in forward and reverse directions. The toner bottle can be easily rotated in the forward and reverse directions by sensing the rib of the toner bottle by using the sensor. Since the load of rotation of the toner bottle changes in accordance with the amount of remaining toner, the rotational speed of the toner bottle is sensed by using the sensor to check whether toner is close to empty.Type: GrantFiled: September 10, 2003Date of Patent: February 12, 2008Assignee: Toshiba Tec Kabushiki KaishaInventors: Noriyuki Umezawa, Takayuki Nishi, Yoshiharu Taniyama, Shinichi Itoh
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Patent number: RE41779Abstract: A developer cartridge which is rotatably mounted in the developing unit of an image forming apparatus, and supplies a developer to the developing unit while rotating includes a cylindrical cartridge main body having a developer outlet hole in the outer surface near one end, and a ring-like cartridge-side shutter which is fitted on the outer surface near one end of the cylindrical cartridge main body to be movable along the rotating shaft of the cylindrical cartridge main body between a position where the developer outlet hole is opened and a position where the developer outlet hole is closed. The developing unit has a guide for inserting the developer cartridge and a driving unit for rotating the developer cartridge, and the guide has a main body-side shutter with a hole.Type: GrantFiled: December 4, 2007Date of Patent: September 28, 2010Assignee: Toshiba Tec Kabushiki KaishaInventors: Tokihiko Ise, Yoshiharu Taniyama, Shinichi Itoh
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Patent number: RE42312Abstract: A method and apparatus for discriminating bottle types, for stirring the toner, and for detecting the amount of toner remaining in the toner bottle. A toner bottle is adapted to fit the apparatus for discriminating toner bottle types, and a toner bottle is adapted for the apparatus for stirring toner. The genuineness of the toner bottle product is checked by sensing a rib assumed to be formed with a predetermined length on the outer surface of the toner bottle. Toner is stirred by continuously rotating the toner bottle in forward and reverse directions. The toner bottle can be easily rotated in the forward and reverse directions by sensing the rib of the toner bottle by using the sensor. Since the load of rotation of the toner bottle changes in accordance with the amount of remaining toner, the rotational speed of the toner bottle is sensed by using the sensor to check whether toner is close to empty.Type: GrantFiled: December 13, 2007Date of Patent: April 26, 2011Assignee: Toshiba Tec Kabushiki KaishaInventors: Noriyuki Umezawa, Takayuki Nishi, Yoshiharu Taniyama, Shinichi Itoh
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Patent number: RE45513Abstract: A method and apparatus for discriminating bottle types, for stirring the toner, and for detecting the amount of toner remaining in the toner bottle. A toner bottle is adapted to fit the apparatus for discriminating toner bottle types, and a toner bottle is adapted for the apparatus for stirring toner. The genuineness of the toner bottle product is checked by sensing a rib assumed to be formed with a predetermined length on the outer surface of the toner bottle. Toner is stirred by continuously rotating the toner bottle in forward and reverse directions. The toner bottle can be easily rotated in the forward and reverse directions by sensing the rib of the toner bottle by using the sensor. Since the load of rotation of the toner bottle changes in accordance with the amount of remaining toner, the rotational speed of the toner bottle is sensed by using the sensor to check whether toner is close to empty.Type: GrantFiled: June 16, 2010Date of Patent: May 12, 2015Assignee: Toshiba Tec Kabushiki KaishaInventors: Noriyuki Umezawa, Takayuki Nishi, Yoshiharu Taniyama, Shinichi Itoh
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Patent number: RE46689Abstract: A method and apparatus for discriminating bottle types, for stirring the toner, and for detecting the amount of toner remaining in the toner bottle. A toner bottle is adapted to fit the apparatus for discriminating toner bottle types, and a toner bottle is adapted for the apparatus for stirring toner. The genuineness of the toner bottle product is checked by sensing a rib assumed to be formed with a predetermined length on the outer surface of the toner bottle. Toner is stirred by continuously rotating the toner bottle in forward and reverse directions. The toner bottle can be easily rotated in the forward and reverse directions by sensing the rib of the toner bottle by using the sensor. Since the load of rotation of the toner bottle changes in accordance with the amount of remaining toner, the rotational speed of the toner bottle is sensed by using the sensor to check whether toner is close to empty.Type: GrantFiled: May 6, 2015Date of Patent: January 30, 2018Assignee: TOSHIBA TEC KABUSHIKI KAISHAInventors: Noriyuki Umezawa, Takayuki Nishi, Yoshiharu Taniyama, Shinichi Itoh
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Patent number: RE47657Abstract: A method and apparatus for discriminating bottle types, for stirring the toner, and for detecting the amount of toner remaining in the toner bottle. A toner bottle is adapted to fit the apparatus for discriminating toner bottle types, and a toner bottle is adapted for the apparatus for stirring toner. The genuineness of the toner bottle product is checked by sensing a rib assumed to be formed with a predetermined length on the outer surface of the toner bottle. Toner is stirred by continuously rotating the toner bottle in forward and reverse directions. The toner bottle can be easily rotated in the forward and reverse directions by sensing the rib of the toner bottle by using the sensor. Since the load of rotation of the toner bottle changes in accordance with the amount of remaining toner, the rotational speed of the toner bottle is sensed by using the sensor to check whether toner is close to empty.Type: GrantFiled: December 18, 2017Date of Patent: October 22, 2019Assignees: TOSHIBA TEC KABUSHIKI KAISHA, TOSHIBA AMERICA BUSINESS SOLUTIONS, INC.Inventors: Noriyuki Umezawa, Takayuki Nishi, Yoshiharu Taniyama, Shinichi Itoh