ELECTROSTATIC CHARGE IMAGE DEVELOPER, DEVELOPER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD

An electrostatic charge image developer contains a toner including toner particles that contain a binder resin and a carrier including magnetic particles and a resin layer that adheres to a surface of the magnetic particles, in which, in a dynamic viscoelasticity measurement of the toner, in a case...

Full description

Saved in:
Bibliographic Details
Main Authors TSURUMI, Yosuke, KADOKURA, Yasuo, IGUCHI, Moegi
Format Patent
LanguageEnglish
French
German
Published 25.09.2024
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
Online AccessGet full text

Cover

More Information
Summary:An electrostatic charge image developer contains a toner including toner particles that contain a binder resin and a carrier including magnetic particles and a resin layer that adheres to a surface of the magnetic particles, in which, in a dynamic viscoelasticity measurement of the toner, in a case where a loss tangent tanδ at a temperature of 90°C and a strain of 1% is represented by D1 (90), a loss tangent tanδ at a temperature of 90°C and a strain of 50% is represented by D50 (90), a loss tangent tanδ at a temperature of 150°C and a strain of 1% is represented by D1 (150), and a loss tangent tanδ at a temperature of 150°C and a strain of 50% is represented by D50 (150), each of D1 (90), D50 (90), D1 (150), and D50 (150) is 0.5 or more and 2.5 or less, a value of D50 (150) - D1 (150) is less than 1.5, and a value of D50 (90) - D1 (90) is less than 1.0, and in the surface of the magnetic particles, an average unevenness interval Sm and an arithmetic mean roughness Ra satisfy 0.5 µm ≤ Sm ≤ 2.5 µm and 0.3 µm ≤ Ra ≤ 1.2 µm.
Bibliography:Application Number: EP20230191971