CARRIER SET FOR ELECTROSTATIC CHARGE IMAGE DEVELOPER, ELECTROSTATIC CHARGE IMAGE DEVELOPER SET, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND CARRIER FOR ELECTROSTATIC CHARGE IMAGE DEVELOPER

• Main Authors: KAKEHI SOTARO, IIZUKA AKIHIRO, TAKAHASHI SAKON, IGUCHI MOEKI
• Format: Patent
• Language: English; Japanese
• Published: 13.10.2016
• Subjects: CINEMATOGRAPHY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS

PROBLEM TO BE SOLVED: To provide a carrier set that suppresses the occurrence of an auger mark that occurs after image formation is repeated for a long period.SOLUTION: There is provided a carrier set for an electrostatic charge image developer including a first carrier satisfying the formula (1) 160 mJ≤x≤200 mJ and a second carrier satisfying the formula (2) 210 mJ≤y≤250 mJ. In the formula (1), x is the total amount of energy of a developer obtained by mixing the first carrier and a toner at a toner density of 8 mass%, the amount measured by a powder rheometer. In the formula (2), y is the total amount of energy of a developer obtained by mixing the second carrier and a toner at a toner density of 8 mass%, the amount being measured by a powder rheometer.SELECTED DRAWING: Figure 1 【課題】画像形成を長期に亘って繰り返した場合に起こるオーガーマークの発生を抑制するキャリアセットの提供。【解決手段】式（１）を満たす第一のキャリアと、式（２）を満たす第二のキャリアと、を含む、静電荷像現像剤用のキャリアセット。式（１） １６０ｍＪ≦ｘ≦２００ｍＪ式（２） ２１０ｍＪ≦ｙ≦２５０ｍＪ式（１）中のｘは、前記第一のキャリアとトナーとをトナー濃度８質量％で混合してなる現像剤の、パウダーレオメータによって測定されるトータルエネルギー量である。式（２）中のｙは、前記第二のキャリアとトナーとをトナー濃度８質量％で混合してなる現像剤の、パウダーレオメータによって測定されるトータルエネルギー量である。【選択図】図１