TONER AND METHOD FOR MANUFACTURING THE SAME, TONER STORAGE UNIT, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD

• Main Authors: TAKEBAYASHI TOMA, YAMADA HIROSHI, TABATA KAZUMASA, TAKEI AKIO, YOSHIDA RYUTA
• Format: Patent
• Language: English; Japanese
• Published: 13.04.2023
• Subjects: CINEMATOGRAPHY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS

To provide a toner that can achieve low temperature fixability, heat-resistant storage property, and image glossiness at high levels, and has a good cleaning property.SOLUTION: A toner has a toner base particle that contains a binder resin and a mold release agent, and resin fine particles on the surface of the toner base particle. The ratio of the peak height Iw of the mold release agent to the peak height Ir of the binder resin (Iw/Ir) measured by the total reflection measurement method (ATR) is 0.10 or more and 0.30 or less. The standard deviation σ (nm) of the distance L (nm) between the adjacent resin fine particles present on the surface of the toner base particle is 150 nm or more and 500 nm or less.SELECTED DRAWING: Figure 1 【課題】低温定着性と、耐熱保存性と、画像光沢とを高レベルで両立でき、クリーニング性が良好であるトナーの提供。【解決手段】結着樹脂及び離型剤を含有するトナー母体粒子と、前記トナー母体粒子の表面に樹脂微粒子と、を有し、全反射測定法（ＡＴＲ）により測定される、前記結着樹脂のピーク高さＩｒと、前記離型剤のピーク高さＩｗと、の比（Ｉｗ／Ｉｒ）が０．１０以上０．３０以下であり、前記トナー母体粒子の表面に存在する隣り合う前記樹脂微粒子間の距離Ｌ（ｎｍ）の標準偏差σ（ｎｍ）が１５０ｎｍ以上５００ｎｍ以下であるトナー。【選択図】図１