TONER

To provide a toner that maintains a finely dispersed state of a coloring agent and achieves high developability even when a high-gloss print material is output.SOLUTION: A toner has a toner particle containing a coloring agent, a binder resin, and calcium carbonate particles. A content of the colori...

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Bibliographic Details
Main Authors IDA HAYATO, HAMA MASAYUKI, KAJIHARA HISASUKE, OCHI KOICHIRO, CHIMOTO YUYA
Format Patent
LanguageEnglish
Japanese
Published 04.11.2022
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:To provide a toner that maintains a finely dispersed state of a coloring agent and achieves high developability even when a high-gloss print material is output.SOLUTION: A toner has a toner particle containing a coloring agent, a binder resin, and calcium carbonate particles. A content of the coloring agent in the toner particle is 1.0 mass% or more and 10.0 mass% or less. The binder resin contains polyester resin. Aromatic ring concentration in the polyester resin is 50 mol% to 70 mol%. A surface of the calcium carbonate particle is covered with a fatty acid. A content of the calcium carbonate particles in the toner particle is 1.0 mass% or more and 15.0 mass% or less. A number average particle diameter of the calcium carbonate particles is 150 nm or more and 800 nm or less in the toner.SELECTED DRAWING: None 【課題】着色剤の微分散状態を維持し、高グロスの印字物を出力する際にも高い発色性を実現するトナー。【解決手段】着色剤、結着樹脂及び炭酸カルシウム粒子を含有するトナー粒子を有するトナーであって、該トナー粒子中の該着色剤の含有量が、１．０質量％以上１０．０質量％以下であり、該結着樹脂が、ポリエステル樹脂を含有し、該ポリエステル樹脂の芳香環濃度が、５０ｍｏｌ％～７０ｍｏｌ％であり、該炭酸カルシウム粒子の表面が、脂肪酸で被覆されており、該トナー粒子中の該炭酸カルシウム粒子の含有量が、１．０質量％以上１５．０質量％以下であり、該炭酸カルシウム粒子の個数平均粒径が、１５０ｎｍ以上８００ｎｍ以下であることを特徴とするトナー。【選択図】なし
Bibliography:Application Number: JP20220006121