TONER FOR ELECTROSTATIC CHARGE IMAGE DEVELOPMENT, ELECTROSTATIC CHARGE IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD

• Main Authors: KIYONO HIDEKO, OMORI HIROKI, IIZUKA AKIHIRO
• Format: Patent
• Language: English; Japanese
• Published: 22.10.2015
• Subjects: CINEMATOGRAPHY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS

PROBLEM TO BE SOLVED: To provide a toner for electrostatic charge image development that suppresses a reduction in image density and color void.SOLUTION: There is provided a toner for electrostatic charge image development that contains toner particles and an external additive, where when the total energy of the toner for electrostatic charge image development is measured by using a powder rheometer under conditions of a speed at the tip of a rotor of 100 mm/sec, an approach angle of the rotor of -4°, and a ventilation flow rate of 0 ml/min, the total energy before applying a load of 30 N to the toner for electrostatic charge image development is 100 mJ or more and 300 mJ or less, and the total energy after applying the load of 30 N to the toner for electrostatic charge image development is 1200 mJ or more and 1400 mJ or less. 【課題】画像濃度の低下及び色抜けを抑制する静電荷像現像用トナーの提供。【解決手段】トナー粒子と、外添剤と、を含み、パウダーレオメータを用いて、回転翼の先端スピードを１００ｍｍ／ｓｅｃとし、回転翼の進入角度を−４?とし、通気流量を０ｍｌ／ｍｉｎとした条件で静電荷像現像用トナーのトータルエネルギーを測定したとき、静電荷像現像用トナーに対し３０Ｎの負荷をかける前の前記トータルエネルギーが１００ｍＪ以上３００ｍＪ以下であり、静電荷像現像用トナーに対し３０Ｎの負荷をかけた後の前記トータルエネルギーが１２００ｍＪ以上１４００ｍＪ以下である静電荷像現像用トナー。【選択図】なし