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公开(公告)号：US12228881B2
公开(公告)日：2025-02-18
申请号：US18536261
申请日：2023-12-12
Applicant: Shoki Matsuda , Keisuke Tada , Yasuyuki Sanui
Inventor： Shoki Matsuda , Keisuke Tada , Yasuyuki Sanui
Abstract: Yellow toner with excellent cleanability, transferability and device contamination resistance is provided. When intensity of spectrum at wavenumber λ, at which total intensity of Raman spectrums of toner particles from 950 cm−1 through 3,250 cm−1 in Raman spectroscopy of toner is maximum, is normalized to 1, and distribution is generated for ≥300 particles regarding LC calculated by [LC (%)=CH5 rate (%)−CHc rate (%)] based on CHc rate (%) defined as [(Inc−Iave)/Iave]×100 and CHs rate (%) defined as [(Ins−Iave)/Iave]×100 where In and Ins represent integrated intensities of spectrums of center and surface portions of each particle from 2,750 cm−1 through 3,250 cm−1, and Iave represents average of Inc and Ins of all particles, percentage by number of particles having LC deviating from LC distribution median by absolute value of ≥25.0; is ≥1.0% by number and ≤25.0% by number.
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公开(公告)号：US12228869B2
公开(公告)日：2025-02-18
申请号：US18362547
申请日：2023-07-31
Applicant: FUJIFILM Business Innovation Corp.
Inventor： Masato Ono , Shigeru Fukuda , Satoya Sugiura , Hiroaki Tanaka , Yosuke Kubo , Iori Nishimura , Daisuke Tanemura , Masayuki Seko , Koichi Matsumoto
Abstract: A transfer device includes an intermediate transfer belt having a surface to which a toner image may be transferred and solid lubricant particles are attached, a primary transfer member performing primary transfer of a toner image to the surface of the intermediate transfer belt, a secondary transfer member performing secondary transfer of the toner image to a surface of a recording medium, and a detection device detecting a density of the toner image and has a light irradiation unit irradiating the surface of the intermediate transfer belt and a light receiving unit receiving reflected light, in which a relationship between a volume-average particle size A (nm) of the solid lubricant particles attached to the surface of the intermediate transfer belt and a wavelength B (nm) of the light radiated from the light irradiation unit satisfies the following Expression: Expression 1:B>A×8.6+300.
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公开(公告)号：US12228868B2
公开(公告)日：2025-02-18
申请号：US18205582
申请日：2023-06-05
Applicant: Hiroaki Takagi
Inventor： Hiroaki Takagi
Abstract: A transfer device includes an intermediate transferor and primary transfer sections. The primary transfer sections each includes a primary transferor. The primary transfer sections include a most-upstream primary transfer section and a most-downstream primary transfer section. One of the primary transfer sections is a special-color primary transfer section switchable between the most-upstream primary transfer section and the most-downstream primary transfer section. The primary transferor of each of the most-upstream primary transfer section and the most-downstream primary transfer section is switchable between a contact position at which the primary transferor contacts the latent image bearer and a separation position at which the primary transferor is separated from the latent image bearer. With only the primary transferor of the special-color primary transfer section at the separation position, the primary transferor of any other primary transfer section than the special-color primary transfer section is arranged at the contact position to transfer an image.
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4.发明授权公开(公告)号：US12216426B2
公开(公告)日：2025-02-04
申请号：US18243451
申请日：2023-09-07
Applicant: CANON KABUSHIKI KAISHA
Inventor： Taisuke Matsuura
Abstract: An image forming apparatus includes an image bearing member, an image forming portion, a transfer member, an applying portion, and an executing portion configured to execute an output operation for forming and outputting a chart formed on a recording material on which a plurality of test images are transferred by applying a plurality of voltages to the transfer member by the applying portion. The executing portion changes a change width per level of the test voltage so that the change width is a first change width in a case that a material of the recording material on which the chart is formed is a first material and so that the change width is a second change width different from the first change width in a case that the material of the recording material is a second material different from the first material.
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公开(公告)号：US20250036047A1
公开(公告)日：2025-01-30
申请号：US18596566
申请日：2024-03-05
Applicant: FUJIFILM Business Innovation Corp.
Inventor： Yoko MIYAMOTO , Toshiaki BABA , Tomohiro WADA
IPC: G03G15/16
Abstract: A transfer device includes: a transfer cylinder that is rotated, and that includes a cylinder main body having an outer circumferential surface provided with a recess for housing a holding member holding a leading end of a recording medium to convey the recording medium, and a sheet member that is wound around the outer circumferential surface, both ends of which are attached to circumferential ends of the recess, respectively, and that has an inclined surface on a downstream end in a conveying direction of the recording medium; and a transfer member to which a transfer voltage is applied and that transfers a developer image to the recording medium held and conveyed by the holding member, at a transfer position, wherein application of the transfer voltage to the transfer member is started after a tip end of the inclined surface arrives at the transfer position.
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Patent Agency Ranking
公开(公告)号：US20250028270A1
公开(公告)日：2025-01-23
申请号：US18775902
申请日：2024-07-17
Applicant: CANON KABUSHIKI KAISHA
Inventor： RYU ITO , HIROSHI HAGIWARA
Abstract: In an image forming apparatus, a length of a patch pattern from a first patch to a last patch included in the patch pattern is longer than a circumferential length that is a length of an intermediate transfer belt in a conveyance direction, an engine control unit forms patches included in a range within the circumferential length in a first density (low density), forms patches included in ranges beyond the circumferential length in a second density (high density) darker than the first density, from among the patches included in the patch pattern, and executes image adjustment control.
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公开(公告)号：US20250013195A1
公开(公告)日：2025-01-09
申请号：US18751947
申请日：2024-06-24
Applicant: Canon Production Printing Holding B.V.
Inventor： Rudolf BOSCH , Albert G.M. VAN WELIE
Abstract: The present invention relates to a method for cooling down a printer comprising an endless cleaning member and an endless image transfer member. The invention further relates to a printer comprising an endless cleaning member and an endless image transfer member The invention further relates to a software product.
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公开(公告)号：US20250013175A1
公开(公告)日：2025-01-09
申请号：US18763187
申请日：2024-07-03
Applicant: CANON KABUSHIKI KAISHA
Inventor： YASUSHI TAKEUCHI
Abstract: An image forming apparatus includes a photosensitive member, an intermediary transfer belt, a primary transfer member, an electrode member, a first applying portion configured to apply, to the primary transfer member, a bias of a polarity opposite to a predetermined polarity, a second applying portion configured to apply, to the electrode member, a bias of the same polarity as the predetermined polarity, and a controller configured to control the second applying portion so as to change the bias applied to the electrode member on the basis of a kind of a recording material.
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公开(公告)号：US12189316B2
公开(公告)日：2025-01-07
申请号：US18042740
申请日：2020-08-25
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Israel Patla , Chen Zigdon , Faina Kogan , Aviad Eliav
IPC: G03G15/16
Abstract: A printing apparatus has a photo imaging plate to be held at a first voltage having a first polarity, and an intermediate transfer member to receive an intermediate image from the photo imaging plate. The intermediate transfer member is to be held at a second voltage having a second polarity opposite to the first polarity. An electrically conductive member is disposed between the photo imaging plate and the intermediate transfer member.
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公开(公告)号：US12187568B2
公开(公告)日：2025-01-07
申请号：US18121594
申请日：2023-03-15
Applicant: Kazuhiro Shimada
Inventor： Kazuhiro Shimada
Abstract: A drive unit includes a drive source and a driving force transmitter that includes a plurality of rotators, an endless belt stretched by the plurality of rotators, a pressing member to press the endless belt, a first support shaft, a first link member to hold the pressing member, a second support shaft, a second link member to press the first link member, a biasing member to bias the second link member. A relation of L1 to L2 satisfies L1>L2, where L1 denotes a distance between the second support shaft and a biasing position and L2 denotes a distance between the second support shaft and a first pressing position. A relation of L3 to L4 satisfies L3>L4, where L3 denotes a distance between the first support shaft and the pressing position and L4 denotes a distance between the first support shaft and a second pressing position.
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