公开(公告)号：US12228881B2

公开(公告)日：2025-02-18

申请号：US18536261

申请日：2023-12-12

Applicant: Shoki Matsuda ,  Keisuke Tada ,  Yasuyuki Sanui

Inventor： Shoki Matsuda ,  Keisuke Tada ,  Yasuyuki Sanui

IPC: G03G9/08 ,  G03G9/09 ,  G03G15/08 ,  G03G15/16 ,  G03G21/00 ,  G03G21/18

Abstract: Yellow toner with excellent cleanability, transferability and device contamination resistance is provided. When intensity of spectrum at wavenumber λ, at which total intensity of Raman spectrums of toner particles from 950 cm−1 through 3,250 cm−1 in Raman spectroscopy of toner is maximum, is normalized to 1, and distribution is generated for ≥300 particles regarding LC calculated by [LC (%)=CH5 rate (%)−CHc rate (%)] based on CHc rate (%) defined as [(Inc−Iave)/Iave]×100 and CHs rate (%) defined as [(Ins−Iave)/Iave]×100 where In and Ins represent integrated intensities of spectrums of center and surface portions of each particle from 2,750 cm−1 through 3,250 cm−1, and Iave represents average of Inc and Ins of all particles, percentage by number of particles having LC deviating from LC distribution median by absolute value of ≥25.0; is ≥1.0% by number and ≤25.0% by number.

公开(公告)号：US5952143A

公开(公告)日：1999-09-14

申请号：US52250

申请日：1998-03-31

Applicant: Kazumi Ootaki ,  Yasuyuki Sanui ,  Yasuo Suzuki

Inventor： Kazumi Ootaki ,  Yasuyuki Sanui ,  Yasuo Suzuki

IPC: G03G9/113

CPC classification number: G03G9/1136 ,  G03G9/1131

Abstract: A carrier for a two-component developer for electrostatic latent images which comprises carrier particles whose surfaces are coated with a resin layer comprising a thermosetting resin, wherein the resin layer formed on convex parts of the carrier particles is relatively thin compared to that formed on the concave parts, and wherein the ratio of the total area of the thin resin layer to the total surface area of the carrier particles is from about 55% to about 90%. The resin coated carrier is manufactured by a coating liquid including the thermosetting resin on carrier particles and drying the coated liquid by either a dip coating, a spray coating or a drip coating method, under reduced pressure while heating.

Abstract translation: 一种用于静电潜像的双组分显影剂的载体，其包括其表面涂覆有包含热固性树脂的树脂层的载体颗粒，其中形成在载体颗粒的凸部上的树脂层与形成在载体颗粒上的树脂层相比相对较薄 凹部，并且其中薄树脂层的总面积与载体颗粒的总表面积的比率为约55％至约90％。 树脂涂布载体由包含热固性树脂的涂布液在载体颗粒上制造，并通过浸涂，喷涂或滴涂法在减压下在加热下干燥涂布的液体。

公开(公告)号：US06183926B2

公开(公告)日：2001-02-06

申请号：US09425985

申请日：1999-10-25

Applicant: Noboru Kuroda ,  Yasushi Nakamura ,  Ryoichi Ito ,  Yasuaki Iwamoto ,  Kohki Katoh ,  Tomio Kondou ,  Kenichi Uehara ,  Yoshihiro Sugiyama ,  Yasuyuki Sanui

Inventor： Noboru Kuroda ,  Yasushi Nakamura ,  Ryoichi Ito ,  Yasuaki Iwamoto ,  Kohki Katoh ,  Tomio Kondou ,  Kenichi Uehara ,  Yoshihiro Sugiyama ,  Yasuyuki Sanui

IPC: G03G9083

CPC classification number: G03G9/0819

Abstract: A toner is made or toner particles which contains a binder resin and a coloring agent, wherein the toner particles have a weight-average particle size in a range of 6.0 to 11.5 &mgr;m, and contains toner particles (a) with a particle diameter of 5 &mgr;m or less in a content ratio of 1 to 15% by number, and toner particles (b) with a particle diameter of twice or more the weight-average particle size in a content ratio of 5 wt % or less, and the number-average particle size D25 and the number-average particle size D75 respectively obtained when the cumulative number of the toner particles reaches 25% and 75% at the measurement of a cumulative toner particle distribution by number thereof are in the relationship of 0.60≦D25/D75≦0.95. A two-component developer includes the above-mentioned toner and a carrier.

Abstract translation: 制造调色剂或含有粘合剂树脂和着色剂的调色剂颗粒，其中调色剂颗粒的重均粒径在6.0至11.5μm的范围内，并且包含粒径为5的调色剂颗粒（a） 以及含量比例为1〜15％的调色剂颗粒（b），以及重均粒径的2倍以上的调色剂颗粒（b）的含量比例为5重量％以下， 当累计调色剂颗粒分布的数量在调色剂颗粒的累积数达到25％和75％时分别获得的平均粒径D25和数均粒径D75的关系为0.60 <= D25 / D75 <= 0.95。 双组分显影剂包括上述调色剂和载体。