Carrier for forming electrophotographic image, developer, image forming method, image forming apparatus, and process cartridge
US-2022291604-A1 · Sep 15, 2022 · US
Carrier, developer, image forming method, and process cartridge
US12372893B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12372893-B2 |
| Application number | US-202218065904-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 14, 2022 |
| Priority date | Dec 23, 2021 |
| Publication date | Jul 29, 2025 |
| Grant date | Jul 29, 2025 |
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- Title
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Abstract
Official abstract text for this publication.
A carrier is provided that includes a core particle and a coating layer coating the core particle. The coating layer includes a resin and chargeable inorganic fine particles, and has voids. The resin has an average film thickness of 0.10 μm or larger and smaller than 0.45 μm. The coating layer has a porosity of 0.1% or higher and lower than 2.8%, when the porosity expressed by the following equation:Porosity [%]=S1/S2×100where, on a cross section of the coating layer, S1 represents a cross sectional area of the voids and S2 represents a cross sectional area of the resin.
First claim
Opening claim text (preview).
The invention claimed is: 1. A carrier comprising: a core particle; and, a coating layer coating the core particle, the coating layer comprising a resin, chargeable inorganic fine particles and a defoaming agent, and having voids, the resin having an average film thickness of 0.10 μm or larger and smaller than 0.45 μm, the coating layer having a porosity of 0.1% or higher and lower than 2.8%, the porosity expressed by the following equation: Porosity [%]= S 1/ S 2×100…
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Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
- G03G9/1139Primary
Physics · mapped topic
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Frequently asked questions
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- What does patent US12372893B2 cover?
- A carrier is provided that includes a core particle and a coating layer coating the core particle. The coating layer includes a resin and chargeable inorganic fine particles, and has voids. The resin has an average film thickness of 0.10 μm or larger and smaller than 0.45 μm. The coating layer has a porosity of 0.1% or higher and lower than 2.8%, when the porosity expressed by the following equ…
- Who is the assignee on this patent?
- Masuko Kaede, Suganuma Tohru, Masuda Minoru, and 5 more
- What technology area does this patent fall under?
- Primary CPC classification G03G9/1139. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jul 29 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).