TONER INCLUDING TONER ADDITIVE FORMULATION

To provide improved toners and toner processes.SOLUTION: A toner includes: a parent toner particle comprising at least one resin; and a surface additive formulation comprising at least one medium silica surface additive, at least one large silica surface additive, at least one positive charging surf...

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Main Authors RICHARD P N VEREGIN, DANIEL W ASARESE, CHENG CHIEH-MIN, PAUL K ACQUAVIVA, MICHAEL F ZONA, JORDAN A FRANK
Format Patent
LanguageEnglish
Japanese
Published 13.09.2021
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Summary:To provide improved toners and toner processes.SOLUTION: A toner includes: a parent toner particle comprising at least one resin; and a surface additive formulation comprising at least one medium silica surface additive, at least one large silica surface additive, at least one positive charging surface additive, wherein the at least one positive charging surface additive is (a) a titanium dioxide surface additive, wherein the parent toner particles further contain a small silica, or (b) a non-titanium dioxide positive charging metal oxide surface additive, wherein the parent toner particles further optionally contain a small silica, and wherein a total surface area coverage of all of the surface additives combined is 100 to 140 percent of the parent toner particle surface area in the non-titanium dioxide positive charging metal oxide surface additive.SELECTED DRAWING: None 【課題】改善されたトナー及びトナーのプロセスを提供する。【解決手段】トナーであって、少なくとも1つの樹脂を含む、親トナー粒子と、表面添加剤配合物であって、少なくとも1つの中間シリカ表面添加剤と、少なくとも1つの大きいシリカ表面添加剤と、少なくとも1つの正電荷表面添加剤であって、少なくとも1つの正電荷表面添加剤が、(a)二酸化チタン表面添加剤であって、親トナー粒子が、小さいシリカを更に含有する、二酸化チタン表面添加剤であるか、又は(b)二酸化非チタン正電荷金属酸化物表面添加剤であって、親トナー粒子が、小さいシリカを更に任意選択的に含有し、組み合わされた表面添加剤の全ての合計表面積被覆率が、親トナー粒子表面積の100〜140パーセントである、二酸化非チタン正電荷金属酸化物表面添加剤である、少なくとも1つの正電荷表面添加剤と、を含む、表面添加剤配合物と、を含む。【選択図】なし
Bibliography:Application Number: JP20210018433