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公开(公告)号:US20230092262A1
公开(公告)日:2023-03-23
申请号:US17665577
申请日:2022-02-06
摘要: A white toner includes a toner particle that contains a binder resin, a release agent, and titanium oxide, at least a part of the titanium oxide being present in a release agent domain, in which in observation of a cross section of the toner particle, an average major axis length Dt of the toner particle, an average major axis length Dw of the release agent domain, and an average major axis length Dp of the titanium oxide in the release agent domain satisfy Expressions (1) and (2). 2×Dp≤Dw≤10×Dp Expression (1): 0.1×Dt≤Dw≤0.5×Dt Expression (2):
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公开(公告)号:US20230091296A1
公开(公告)日:2023-03-23
申请号:US17586796
申请日:2022-01-28
摘要: A white toner includes a toner particle that contains a binder resin containing a hybrid resin in which an amorphous resin unit and a crystalline polyester resin unit are chemically bonded to each other, surface-treated titanium oxide, and a release agent, in which a proportion of Al atoms in a surface of the surface-treated titanium oxide is 3 atomic % or greater and 20 atomic % or less, and a proportion of Ti atoms in the surface is 5 atomic % or greater and 15 atomic % or less.
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公开(公告)号:US20210286284A1
公开(公告)日:2021-09-16
申请号:US16945122
申请日:2020-07-31
发明人: Kotaro YOSHIHARA , Asafumi FUJITA , Teppei YAWADA , Motoko SAKAI
摘要: A carrier for developing an electrostatic charge image has magnetic particles and a resin coating that covers the magnetic particles and contains at least one lubricant. The resin coating has a dispersed phase of the lubricant and meets requirement (1).
Requirement (1): the lubricant content in a top layer>the lubricant content in a middle layer>the lubricant content in a bottom layer
The top, middle, and bottom layers are of the resin coating divided into three in the direction of thickness, and the lubricant content is the percentage area of the dispersed phase of the lubricant in a cross-section of the layer taken along the thickness thereof.-
公开(公告)号:US20230090120A1
公开(公告)日:2023-03-23
申请号:US17586790
申请日:2022-01-28
摘要: A photoluminescent toner includes a photoluminescent toner particle that contains a binder resin, a release agent, and a photoluminescent pigment and has a release agent domain, and a silicone oil-treated silica particle that is externally added to the photoluminescent toner particle, in which in observation of a cross section of the photoluminescent toner particle, an average major axis length Dw of the release agent domain and an average major axis length Dp of the photoluminescent pigment satisfy Expression (1). 0.3≤Dw/Dp≤1.0 Expression (1):
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