Recycling Identified Toner Patents (Class 430/119.88)
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Patent number: 10990057Abstract: An image forming apparatus includes an image holding member; a charging unit; an electrostatic image forming unit; a developing unit that includes an electrostatic image developer including a toner and develops the electrostatic image formed on the surface of the image holding member with the electrostatic image developer to form a toner image; a transfer unit; and a cleaning unit that removes toner particles present on the surface of the image holding member. The cleaning unit includes a cleaning blade arranged to contact with the surface of the image holding member. The cleaning unit includes a cleaning blade A containing a contacting portion having a JIS-A hardness of 90° or more, or the cleaning unit includes a control unit B that controls a load with which the cleaning blade contacts with the image holding member, the control unit B controlling the load in a constant load mode.Type: GrantFiled: March 18, 2020Date of Patent: April 27, 2021Assignee: FUJI XEROX CO., LTD.Inventors: Jun Sekiya, Tatsuhiro Igarashi, Yasuhisa Morooka, Yuma Kubo
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Patent number: 8224196Abstract: An image forming apparatus to check an amount of waste toner stored in a waste toner container in stages. The image forming apparatus includes a main body, a waste toner container which is installed in the main body to store waste toner, a light emitting part which emits light to detect an amount of the waste toner stored in the waste toner container, a plurality of light receiving parts which receive the light emitted from the light emitting part, and a light distribution member which distributes the light emitted from the light emitting part to the plurality of light receiving parts. Waste toner detecting regions are respectively defined on light paths between the light distribution member and the plurality of light receiving parts. The waste toner detecting regions are located at different positions along an accumulated direction of the waste toner in the waste toner container.Type: GrantFiled: November 5, 2007Date of Patent: July 17, 2012Assignee: Samsung Electronics Co., Ltd.Inventor: Jin Kyu Oh
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Patent number: 8135329Abstract: A toner conveyer device for use din an image forming apparatus includes a toner conveyer belt conveys waste toner, a screw member that receives the waste toner from the toner conveyer belt and conveys the waste toner to a housing unit, and a scraping member that scrapes waste toner that adheres to the screw member.Type: GrantFiled: October 15, 2007Date of Patent: March 13, 2012Assignee: Ricoh Company, Ltd.Inventors: Yoshiyuki Shimizu, Tomofumi Yoshida, Hirobumi Ooyoshi, Koji Kato, Kenzo Tatsumi, Yoshihiro Kawakami, Tomohiro Kubota
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Patent number: 8126340Abstract: The toner transporting section is provided with a plurality of toner discharge portions, selectively discharges a waste toner from any one of the plurality of toner discharge portions, and stores the waste toner in a waste toner container to which the waste toner discharged from the selected toner discharge portion is to be stored. Accordingly, it is possible to exchange the waste toner container corresponding to the toner discharge portion not used for discharging the waste toner. Therefore, it is possible to exchange the waste toner containers without stopping an image forming operation in an image forming apparatus provided with a cleaning device.Type: GrantFiled: September 25, 2007Date of Patent: February 28, 2012Assignee: Sharp Kabushiki KaishaInventors: Takahiro Bito, Hitoshi Nagahama
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Patent number: 8110330Abstract: To provide a toner that contains at least a binder resin, a colorant, a releasing agent and zeolite, the toner being manufactured through O/W type wet granulation and having an average circularity of 0.970 or greater, and a developer and image forming method using the toner.Type: GrantFiled: September 18, 2007Date of Patent: February 7, 2012Assignee: Ricoh Company, Ltd.Inventors: Yoshimichi Ishikawa, Chiyoshi Nozaki, Tsuyoshi Nozaki, Takuya Kadota, Katsunori Kurose, Mitsuyo Matsumoto, Atsushi Yamamoto, Masahide Inoue
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Patent number: 7939234Abstract: An image forming apparatus, including a latent image-holding member, a developing unit, a transfer unit, a cleaning unit, and a recycling unit, wherein the developer includes a toner having an external-additive adhesiveness index SA in the range of approximately 50% to approximately 95% and: a carrier containing magnetic particles and a coating layer coating the surface of the magnetic particles and having a total energy of approximately 1,420 to approximately 2,920 mJ; or a carrier containing magnetic powder-dispersed particles and a coating layer coating the surface of the magnetic powder-dispersed particles and having a total energy of, approximately 890 to approximately 1,390 mJ.Type: GrantFiled: May 30, 2007Date of Patent: May 10, 2011Assignee: Fuji Xerox Co., Ltd.Inventors: Akira Matsumoto, Akihiro Iizuka, Fusako Kiyono
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Patent number: 7625686Abstract: An image forming method in which toner having a an average circularity of 0.94-0.99, and an average equivalent circle diameter of 2.6-7.4 ?m of toner particles is utilized, an electrostatic latent image formed on an image carrying member being developed, and the toner image is transferred on a transferring material followed by fixing, wherein non-transferred toner remaining on said image carrying member is collected for reuse for image formation, and non-transferred toner collected is utilized after having been passed through a toner intermediate chamber.Type: GrantFiled: March 2, 2004Date of Patent: December 1, 2009Assignee: Konica Minolta Holdings, Inc.Inventors: Ken Ohmura, Hiroshi Yamazaki, Asao Matsushima, Eiichi Yoshida
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Patent number: 7572564Abstract: The present invention relates to a toner for electrostatic image development, comprising a crystalline ester compound synthesized by polymerizing a carboxylic acid component with an alcohol component, a non-crystalline resin, a colorant and a releasing agent, wherein the weight-average molecular weight of the crystalline ester compound is 5000 or less, and the number of carbon atoms in at least one component selected from the carboxylic acid component and the alcohol component is 10 or more.Type: GrantFiled: April 12, 2006Date of Patent: August 11, 2009Assignee: Fuji Xerox Co., Ltd.Inventors: Shuji Sato, Shigeru Hayashi, Katsumi Daimon
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Patent number: 7435521Abstract: A toner for developing an electrostatic image which has a small particle size essential for attaining a high-quality image, and can output a high-quality image excellent in frictional charging property and free from scumming. The toner for developing an electrostatic image has the volume average particle diameter of 2.0 ?m to 7.1 ?m and the surface condition of the toner is in scab form.Type: GrantFiled: December 28, 2004Date of Patent: October 14, 2008Assignee: Ricoh Company, Ltd.Inventors: Shinichiro Yagi, Hiroshi Yamada, Hiroshi Yamashita, Naohiro Watanabe, Tsunemi Sugiyama, Shigeru Emoto, Masami Tomita, Toshiki Nanya, Tadao Takikawa
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Publication number: 20080081278Abstract: An image forming apparatus, including a latent image-holding member, a developing unit, a transfer unit, a cleaning unit, and a recycling unit, wherein the developer includes a toner having an external-additive adhesiveness index SA in the range of approximately 50% to approximately 95% and: a carrier containing magnetic particles and a coating layer coating the surface of the magnetic particles and having a total energy of approximately 1,420 to approximately 2,920 mJ; or a carrier containing magnetic powder-dispersed particles and a coating layer coating the surface of the magnetic powder-dispersed particles and having a total energy of, approximately 890 to approximately 1,390 mJ.Type: ApplicationFiled: May 30, 2007Publication date: April 3, 2008Applicant: FUJI XEROX CO., LTD.Inventors: Akira Matsumoto, Akihiro Iizuka, Fusako Kiyono
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Patent number: 7344815Abstract: A toner for developing an electrostatic image is disclosed. The arithmetic average of shape coefficient SF-1 of the toner particles calculated by Equation 1 is from 125 to 170 and a ratio of that to an arithmetic average of the shape coefficient SF-2 of the toner particles calculated by Equation 2, SF-1/SF-2, is from 1.10 to 1.52 and the ratio of the toner particles having a circle corresponding diameter measured by a flow particle image analyzer of from not less than 0.60 to less than 1.00 ?m is not more than 5.0% in number. The image forming methods employing the toner are also disclosed.Type: GrantFiled: January 24, 2002Date of Patent: March 18, 2008Assignee: Konica CorporationInventors: Naohiro Hirose, Asao Matsushima, Meizo Shirose, Hiroshi Yamazaki