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公开(公告)号：US10310441B2
公开(公告)日：2019-06-04
申请号：US16081152
申请日：2018-01-12
Applicant: KYOCERA Document Solutions Inc.
Inventor： Shingo Sakato , Nariaki Tanaka , Kiyotaka Kobayashi , Hiroka Itani , Takuji Watanabe , Eriko Hayashi
Abstract: In an image forming apparatus, a resistance component of an inner impedance of an electricity removing member is equal to or lower than a value that is obtained by multiplying a calculated resistance value by a first specific value, the calculated resistance value being calculated based on a predetermined formula as a DC resistance value of the electricity removing member that is required to reduce a pre-electricity-removal potential of a photoconductor to a predetermined post-electricity-removal potential during an electricity removal time, the first specific value being calculated based on a ratio of a linear speed of the electricity removing member to a linear speed of the photoconductor, and a resistance component of the contact impedance of the electricity removing member is equal to or lower than a value that is obtained by multiplying the calculated resistance value by a second specific value that is calculated based on the ratio.
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Patent Agency Ranking
2.发明申请公开(公告)号：US20190072894A1
公开(公告)日：2019-03-07
申请号：US16081152
申请日：2018-01-12
Applicant: KYOCERA Document Solutions Inc.
Inventor： Shingo Sakato , Nariaki Tanaka , Kiyotaka Kobayashi , Hiroka Itani , Takuji Watanabe , Eriko Hayashi
Abstract: In an image forming apparatus, a resistance component of an inner impedance of an electricity removing member is equal to or lower than a value that is obtained by multiplying a calculated resistance value by a first specific value, the calculated resistance value being calculated based on a predetermined formula as a DC resistance value of the electricity removing member that is required to reduce a pre-electricity-removal potential of a photoconductor to a predetermined post-electricity-removal potential during an electricity removal time, the first specific value being calculated based on a ratio of a linear speed of the electricity removing member to a linear speed of the photoconductor, and a resistance component of the contact impedance of the electricity removing member is equal to or lower than a value that is obtained by multiplying the calculated resistance value by a second specific value that is calculated based on the ratio.
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公开(公告)号：US10698359B2
公开(公告)日：2020-06-30
申请号：US16505877
申请日：2019-07-09
Applicant: KYOCERA Document Solutions Inc.
Inventor： Toshiki Fujita , Ikuo Makie , Masahito Ishino , Nariaki Tanaka , Kiyotaka Kobayashi
Abstract: An image forming apparatus includes an image bearing member and a static elimination device. The static elimination device irradiates static elimination light onto a circumferential surface of the image bearing member. The image bearing member includes a conductive substrate and a single-layer photosensitive layer. The photosensitive layer contains a charge generating material, a hole transport material, an electron transport material, and a binder resin. The static elimination light has a wavelength of at least 600 nm and no greater than 800 nm. The photosensitive layer has an optical absorption coefficient of at least 600 cm−1 and no greater than 1,500 cm−1 with respect to light having a wavelength of 660 nm.
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公开(公告)号：US10901332B2
公开(公告)日：2021-01-26
申请号：US16506300
申请日：2019-07-09
Applicant: KYOCERA Document Solutions Inc.
Inventor： Toshiki Fujita , Nariaki Tanaka , Masahito Ishino , Kiyotaka Kobayashi
Abstract: In an image forming apparatus, a cleaning member is pressed against a circumferential surface of an image bearing member and collects a toner remaining on the circumferential surface of the image bearing member. The toner has a number average roundness of 0.965 to 0.998. The toner has a D50 of 4.0 μm to 7.0 μm. A linear pressure of the cleaning member on the circumferential surface of the image bearing member is 10 N/m to 40 N/m. The image bearing member includes a single-layer photosensitive layer containing a charge generating material and a hole transport material. Ionization potential IpHTM of the hole transport material and ionization potential IpCGM of the charge generating material satisfy mathematical formula (1) “IpHTM≥5.30 eV”, mathematical formula (2) “IpCGM≥5.30 eV”, and mathematical formula (3) “0.09 eV≤|IpHTM−IpCGM|≤0.30 eV”.
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5.发明授权公开(公告)号：US10042318B2
公开(公告)日：2018-08-07
申请号：US15474869
申请日：2017-03-30
Applicant: KYOCERA Document Solutions Inc.
Inventor： Hiroka Itani , Nariaki Tanaka , Shingo Sakato , Kiyotaka Kobayashi , Takuji Watanabe , Eriko Hayashi
Abstract: An image forming apparatus includes a photoconductor and an electricity removing member electrically grounded and disposed to be in contact with a surface of the photoconductor. In the image forming apparatus, with regard to a capacitance component of an inner impedance of the electricity removing member and a capacitance component of a contact impedance of the electricity removing member that are calculated from a Cole-Cole plot obtained from measurement by an AC impedance method in a predetermined frequency range, a value obtained by dividing the capacitance component of the contact impedance by the capacitance component of the inner impedance is equal to or lower than a predetermined first specific value, and the capacitance component of the inner impedance is equal to or lower than a predetermined second specific value.
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6.发明申请公开(公告)号：US20170285506A1
公开(公告)日：2017-10-05
申请号：US15474869
申请日：2017-03-30
Applicant: KYOCERA Document Solutions Inc.
Inventor： Hiroka Itani , Nariaki Tanaka , Shingo Sakato , Kiyotaka Kobayashi , Takuji Watanabe , Eriko Hayashi
IPC: G03G21/00
CPC classification number: G03G21/06
Abstract: An image forming apparatus includes a photoconductor and an electricity removing member electrically grounded and disposed to be in contact with a surface of the photoconductor. In the image forming apparatus, with regard to a capacitance component of an inner impedance of the electricity removing member and a capacitance component of a contact impedance of the electricity removing member that are calculated from a Cole-Cole plot obtained from measurement by an AC impedance method in a predetermined frequency range, a value obtained by dividing the capacitance component of the contact impedance by the capacitance component of the inner impedance is equal to or lower than a predetermined first specific value, and the capacitance component of the inner impedance is equal to or lower than a predetermined second specific value.
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