公开(公告)号：EP4332681A1

公开(公告)日：2024-03-06

申请号：EP22795910.3

申请日：2022-04-28

申请人： CANON KABUSHIKI KAISHA

发明人： MURAYAMA, Ryuji ,  KITAMURA, Shin ,  TAKAHASHI, Toru ,  TSUJIMOTO, Daisuke ,  MATSUO, Ryuichiro ,  SANO, Hitoshi ,  FUJITA, Nobuyuki ,  YAMADA, Shuji ,  GUNJI, Yuka ,  KOBORI, Takakuni ,  OGAWA, Yoshihiro ,  OHMORI, Atsuhiko ,  KAGAWA, Hiroki ,  ADACHI, Keisuke ,  SUGITA, Tomoko

IPC分类号： G03G9/097

摘要： The toner is resistant to the generation of toner clumping, exhibits a stable charging performance regardless of the use environment, and exhibits little fluctuation in charging performance even during continuous high-print-count printing. The toner contains binder resin-containing toner particles and silica fine particles S 1, wherein the weight-average particle diameter of the toner is 4.0-15.0 µm, both inclusive. Peaks originating with the silica fine particles S1 are observed in 29 Si-NMR measurement of the silica fine particles S 1, and, in the spectrum obtained by 29 Si CP/MAS NMR or 29 Si DD/MAS NMR, the peak area of a peak corresponding to the D1 unit structure in the silica fine particles S 1, the peak area of a peak corresponding to the D2 unit structure in the silica fine particles S 1, and the peak area of a peak corresponding to the Q unit structure in the silica fine particles S 1 satisfy a prescribed relationship.

公开(公告)号：EP4083711A1

公开(公告)日：2022-11-02

申请号：EP22170178.2

申请日：2022-04-27

申请人： Canon Kabushiki Kaisha

发明人： ADACHI, Keisuke ,  TOYODA, Takayuki ,  OHMORI, Atsuhiko ,  SUGITA, Tomoko

IPC分类号： G03G9/097 ,  G03G9/087

摘要： A toner is provided that comprises a toner particle comprising a binder resin and a wax, and an inorganic fine particle on a surface of the toner particle, wherein the binder resin comprises a resin A; the toner satisfies 2.50≤SPa-SPw≤4.50, where SPa (cal/cm 3 ) 0.5 is the SP value of the resin A, and SPw (cal/cm 3 ) 0.5 is the SP value of the wax; the inorganic fine particle comprises a silica fine particle whose surface has been treated with a silicone oil; in a 29 Si solid-state NMR measurement of the silica fine particle, 30≤B≤60 and 4.0≤A/B≤6.0 are satisfied, taking A as an integration value of a D unit obtained by taking an integration value of a Q unit in a CP/MAS measurement as 100, and taking B as an integration value of a D unit obtained by taking an integration value of a Q unit in a DD/MAS measurement as100.

公开(公告)号：EP4083710A1

公开(公告)日：2022-11-02

申请号：EP22170177.4

申请日：2022-04-27

申请人： Canon Kabushiki Kaisha

发明人： OHMORI, Atsuhiko ,  KAGAWA, Hiroki ,  ADACHI, Keisuke ,  SUGITA, Tomoko

IPC分类号： G03G9/097 ,  G03G9/087 ,  G03G9/093

摘要： A toner comprising: a toner particle comprising a binder resin and a hydrocarbon wax; and inorganic fine particles, wherein the inorganic fine particles include silica fine particles surface-treated with specific polydimethylsiloxanes, a total amount of trimethylsilanol in the silica fine particles is from 1.0 ppm to 5.0 ppm, where a standard value of an amount of ions of an ester group is measured by time-of-flight secondary ion mass spectrometry, one or more peaks of the standard value are present within a range of 100 nm from the surface of the toner particle, and the maximum value A(dmax) among the peaks of the standard value and the standard value A(0) on the surface of the toner particle satisfy the following relationships: 1.05 ≤ A dmax / A 0 ≤ 5.00 , A 0 ≥ 0.010 .