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公开(公告)号：US20240329584A1
公开(公告)日：2024-10-03
申请号：US18617244
申请日：2024-03-26
发明人： Yasuaki Sakamoto , Masaru Watanabe , Kenichi Hayashi , Ayato Morikami , Hideyuki Ogasawara , Yukiko Yoshimura
IPC分类号： G03G15/00
CPC分类号： G03G15/5041 , G03G15/5045 , G03G15/5062
摘要： An image forming apparatus includes an adjustment processing portion, an acquisition processing portion, and a determination processing portion. Each time an adjustment condition is satisfied during execution of an image forming process, the adjustment processing portion uses toner to adjust one adjustment target selected in accordance with a specific order among a plurality of adjustment targets related to image quality of an output image output by the image forming process. The acquisition processing portion acquires variation amount information related to an amount of variation in a state value related to an image forming portion caused by a start of the image forming process. The determination processing portion determines an adjustment target to be adjusted first after the start of the image forming process by the adjustment processing portion, based on the variation amount information acquired by the acquisition processing portion.
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公开(公告)号：US20240329569A1
公开(公告)日：2024-10-03
申请号：US18615200
申请日：2024-03-25
发明人： Satoya SUGIURA , Hiroaki TANAKA , Masato ONO , Yosuke KUBO , Iori NISHIMURA , Shigeru FUKUDA , Daisuke TANEMURA , Masayuki SEKO , Koichi MATSUMOTO , Masato FURUKAWA
IPC分类号： G03G15/16
CPC分类号： G03G15/162 , G03G2215/1614
摘要： A transfer device includes an intermediate transfer member consisting of an endless belt which consists of a layer containing a resin including at least one resin selected from the group consisting of a polyimide resin, a polyamide-imide resin, an aromatic polyether ether ketone resin, a polyphenylene sulfide resin, and a polyetherimide resin, conductive carbon particles, a silicone oil containing at least one polymer selected from the group consisting of dimethylpolysiloxane and organic group-substituted dimethylpolysiloxane or has the layer as an outermost layer, and in which an integral value of a statistical quantity L(r) represented by the following Equation (1) is 0 or more and 0.1 or less at an interparticle distance r of 0.05 μm or more and 0.30 μm or less in a spatial distribution of the conductive carbon particles existing in a 6.3 μm×4.2 μm evaluation region within an outer peripheral surface of the endless belt, a primary transfer device having a primary transfer roll made of a metal that applies an electric field to the intermediate transfer member by coming into contact with an inner peripheral surface of the intermediate transfer member, and performing primary transfer of a toner image formed on a surface of an image holder to the outer peripheral surface of the intermediate transfer member, and a secondary transfer device performing secondary transfer of the toner image transferred to the outer peripheral surface of the intermediate transfer member to a surface of a recording medium.
L
(
r
)
:=
K
(
r
)
/
π
-
r
(
1
)
[In Equation (1), r represents the interparticle distance, and K(r) represents the Ripley's K function K(r) represented by the following Equation (2).]
K
(
r
)
:=
∑
i
≠
j
N
1
(
❘
"\[LeftBracketingBar]"
X
i
-
X
j
❘
"\[RightBracketingBar]"
≤
r
)
/
s
(
❘
"\[LeftBracketingBar]"
X
i
-
X
j
❘
"\[RightBracketingBar]"
)
λ
2
(
2
)
[In Equation (2), 1(|Xi−Xj|≤r) represents an indicator function, Xi and Xj represent coordinates of points i and j respectively, |Xi−Xj| represents a Euclidean distance between the coordinates Xi and Xj, r represents the interparticle distance, s(|Xi−Xj|) represents an edge correction factor s(x) of an evaluation region represented by the following Equation (3), x equals |Xi−Xj|, N represents the total number of particles in the evaluation region, and λ represents a number density of particles in the evaluation region.]
s(x):=LxLy−x/π(2Lx+2Ly−x) (3)
[In Equation (3), Lx and Ly represent lengths (μm) of the sides of the evaluation region in an x-axis direction and a y-axis direction respectively, x equals |Xi−Xj|, Xi and Xj represent coordinates of points i and j respectively, and |Xi−Xj| represents a Euclidean distance between the coordinates Xi and Xj.]-
公开(公告)号：US20240329564A1
公开(公告)日：2024-10-03
申请号：US18365003
申请日：2023-08-03
发明人： Mitsutoshi HONGO , Atsushi FUNADA , Tatsuya TAMAI , Mizue SEKINE
IPC分类号： G03G15/08
CPC分类号： G03G15/0891
摘要： A developing device includes a tubular member through which developer is to be transported, an end support that supports an end of the tubular member, and a blocking member that extends over an end face of the tubular member and the end support and that blocks the developer from entering a gap between an outer peripheral surface of the tubular member and the end support.
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公开(公告)号：US20240329561A1
公开(公告)日：2024-10-03
申请号：US18626952
申请日：2024-04-04
发明人： Nao Itabashi
CPC分类号： G03G15/0865 , G03G15/0863 , G03G21/1652 , G03G21/1676
摘要： A developing cartridge may include: a casing for accommodating developer therein; a developing roller rotatable about an axis extending in a first direction and positioned at one side of the casing in a second direction; a storage medium having an electric contact surface; and a holder movable relative to the casing in the second direction with the electric contact surface between a first position and a second position, the holder having an outer surface at which the electric contact surface is positioned.
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公开(公告)号：US20240329559A1
公开(公告)日：2024-10-03
申请号：US18361094
申请日：2023-07-28
发明人： Takekazu SHIOTANI
IPC分类号： G03G15/04
CPC分类号： G03G15/04
摘要： An image carrier unit includes: an image carrier having a circular cross-section and extending in one direction; an exposure device that radiates exposure light to the image carrier, the exposure device extending in the one direction and being opposed to the image carrier in a radial direction of the image carrier; a projecting member that is provided at both-end portions of the exposure device in the one direction, and projects to the image carrier along the radial direction; a formation member including an opposed surface that is opposed to a peripheral surface of the projecting member in a circumferential direction of the image carrier; a pressing member that presses the projecting member in the circumferential direction to press the peripheral surface of the projecting member against the opposed surface; and an adjusting member that adjusts a position of the exposure device relative to the image carrier by moving the exposure device in the radial direction with the projecting member pressed by the pressing member.
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公开(公告)号：US20240329556A1
公开(公告)日：2024-10-03
申请号：US18451495
申请日：2023-08-17
发明人： Satoya SUGIURA , Hiroaki TANAKA , Masato ONO , Yosuke KUBO , lori NISHIMURA , Shigeru FUKUDA , Daisuke TANEMURA , Masayuki SEKO , Koichi MATSUMOTO
CPC分类号： G03G15/0131 , G03G9/08 , G03G15/0189 , G03G15/0216 , G03G15/162
摘要： A transfer device includes an intermediate transfer member consisting of an endless belt which consists of a layer containing a resin including at least one resin selected from the group consisting of a polyimide resin, a polyamide-imide resin, an aromatic polyether ether ketone resin, a polyphenylene sulfide resin, and a polyetherimide resin, conductive carbon particles, a silicone oil containing at least one polymer selected from the group consisting of dimethylpolysiloxane and organic group-substituted dimethylpolysiloxane or has the layer as an outermost layer, and in which an integral value of a statistical quantity L(r) represented by the following Equation (1) is 0 or more and 0.1 or less at an interparticle distance r of 0.05 μm or more and 0.30 μm or less in a spatial distribution of the conductive carbon particles existing in a 6.3 μm×4.2 μm evaluation region within an outer peripheral surface of the endless belt, a primary transfer device having a primary transfer roll made of a metal that applies an electric field to the intermediate transfer member by coming into contact with an inner peripheral surface of the intermediate transfer member, and performing primary transfer of a toner image formed on a surface of an image holder to the outer peripheral surface of the intermediate transfer member, and a secondary transfer device performing secondary transfer of the toner image transferred to the outer peripheral surface of the intermediate transfer member to a surface of a recording medium.
L
(
r
)
:=
K
(
r
)
/
π
-
r
(
1
)
[In Equation (1), r represents the interparticle distance, and K(r) represents the Ripley's K function K(r) represented by the following Equation (2).]
K
(
r
)
:=
∑
i
≠
j
N
1
(
❘
"\[LeftBracketingBar]"
X
i
-
X
j
❘
"\[RightBracketingBar]"
≤
r
)
/
s
(
❘
"\[LeftBracketingBar]"
X
i
-
X
j
❘
"\[RightBracketingBar]"
)
λ
2
(
2
)
[In Equation (2), 1(|Xi−Xj|≤r) represents an indicator function, Xi and Xj represent coordinates of points i and j respectively, |Xi−Xj| represents a Euclidean distance between the coordinates Xi and Xj, r represents the interparticle distance, s(|Xi−Xj|) represents an edge correction factor s(x) of an evaluation region represented by the following Equation (3), x equals |Xi−Xj|, N represents the total number of particles in the evaluation region, and λ represents a number density of particles in the evaluation region.]
s
(
x
)
:=
L
x
L
y
-
x
π
(
2
L
x
+
2
L
y
-
x
)
(
3
)
[In Equation (3), Lx and Ly represent lengths (μm) of the sides of the evaluation region in an x-axis direction and a y-axis direction respectively, x equals |Xi−Xj|, Xi and Xj represent coordinates of points i and j respectively, and |Xi−Xj| represents a Euclidean distance between the coordinates Xi and Xj.]-
公开(公告)号：US12105472B2
公开(公告)日：2024-10-01
申请号：US18326888
申请日：2023-05-31
CPC分类号： G03G9/113 , G03G15/08 , G03G15/0818 , G03G2215/0607
摘要： A carrier for forming an electrophotographic image contains a core particle and a coating layer coating the core particle, wherein the coating layer contains a particle containing antimony and an anionic dispersant and the particle containing antimony includes a substrate particle containing a first inorganic fine particle.
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公开(公告)号：US12105470B2
公开(公告)日：2024-10-01
申请号：US17493107
申请日：2021-10-04
发明人： Daisuke Ishizuka , Eiji Kawakami
CPC分类号： G03G9/0819 , G03G9/0821 , G03G9/0827 , G03G15/08
摘要： A toner for developing an electrostatic charge image contains toner particles including first toner particles and second toner particles, the first toner particles having a brightness of less than 90 and the second toner particles having a brightness of 90 or more. The second toner particles constitute 0.1% by number or more and 10% by number or less of the toner particles, and, in the size distribution of the second toner particles, toner particles having a diameter equal to or smaller than the number-average diameter Dn of the toner particles constitute 70% by number or more.
-
公开(公告)号：US12105466B2
公开(公告)日：2024-10-01
申请号：US18388570
申请日：2023-11-10
CPC分类号： G03G21/1814 , G03G21/1623 , G03G21/1647 , G03G21/1676 , G03G21/1803 , G03G21/1825 , G03G21/1839 , G03G21/1842 , G03G2215/0119 , G03G2221/169 , G03G2221/1861 , G03G2221/1869
摘要： A cartridge includes a photosensitive drum and a developing roller configured to develop an electrostatic latent image formed on the photosensitive drum. A first frame rotatably supports the photosensitive drum and a second frame rotatably supports the developing roller. A movable member is movable with respect to the second frame, with the movable member including a first force receiving surface and a second force receiving surface. The second frame is movable relative to the first frame between a contact position in which the developing roller is in contact with the photosensitive drum and a spaced position in which the developing roller is spaced from the photosensitive drum. The second force receiving surface is capable of being moved by the first force receiving surface between a first position and a second position, and the second frame is capable of being moved by the second force receiving surface from the contact position toward the spaced position.
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公开(公告)号：US12105461B2
公开(公告)日：2024-10-01
申请号：US18219936
申请日：2023-07-10
发明人： Ryoichi Kawasumi
CPC分类号： G03G21/0052 , G03G21/206 , G03G2221/0094
摘要： In opposition to a sheet feeding path, an ultrafine particle (UFP) collecting filter provided between transfer and fixing is easily exchanged. Therefore, a duct unit kept in a state of holding the UFP collecting filter is removably and easily mounted to a duct.
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