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A platform for research: civil engineering, architecture and urbanism
FERRITE PARTICLES, ELECTROPHOTOGRAPHIC DEVELOPER CARRIER CORE MATERIAL, ELECTROPHOTOGRAPHIC DEVELOPER CARRIER, AND ELECTROPHOTOGRAPHIC DEVELOPER
Provided are: ferrite particles in which the environmental stability of charging characteristics is high and the charge rise is good; an electrophotographic developer carrier core material; an electrophotographic developer carrier; and an electrophotographic developer. The ferrite particles are characterized by containing a crystal-phase component comprising perovskite crystals represented by the composition formula of RZrO3 (wherein R is an alkaline earth metal element), and by having a surface roughness Rz of 0.8 µm to 3.5 µm, inclusive, and further characterized in that the standard deviation Rzσ of the surface roughness is within a range represented by a prescribed formula. The ferrite particles are used as an electrophotographic developer carrier core material. Using the same, an electrophotographic developer carrier and an electrophotographic developer are obtained.
FERRITE PARTICLES, ELECTROPHOTOGRAPHIC DEVELOPER CARRIER CORE MATERIAL, ELECTROPHOTOGRAPHIC DEVELOPER CARRIER, AND ELECTROPHOTOGRAPHIC DEVELOPER
Provided are: ferrite particles in which the environmental stability of charging characteristics is high and the charge rise is good; an electrophotographic developer carrier core material; an electrophotographic developer carrier; and an electrophotographic developer. The ferrite particles are characterized by containing a crystal-phase component comprising perovskite crystals represented by the composition formula of RZrO3 (wherein R is an alkaline earth metal element), and by having a surface roughness Rz of 0.8 µm to 3.5 µm, inclusive, and further characterized in that the standard deviation Rzσ of the surface roughness is within a range represented by a prescribed formula. The ferrite particles are used as an electrophotographic developer carrier core material. Using the same, an electrophotographic developer carrier and an electrophotographic developer are obtained.
FERRITE PARTICLES, ELECTROPHOTOGRAPHIC DEVELOPER CARRIER CORE MATERIAL, ELECTROPHOTOGRAPHIC DEVELOPER CARRIER, AND ELECTROPHOTOGRAPHIC DEVELOPER
FERRITTEILCHEN, KERNMATERIAL FÜR ELEKTROFOTOGRAFISCHEN ENTWICKLERTRÄGER, ELEKTROFOTOGRAFISCHER ENTWICKLERTRÄGER UND ELEKTROFOTOGRAFISCHER ENTWICKLER
PARTICULES DE FERRITE, MATÉRIAU DE COEUR DE SUPPORT DE RÉVÉLATEUR ÉLECTROPHOTOGRAPHIQUE, SUPPORT DE RÉVÉLATEUR ÉLECTROPHOTOGRAPHIQUE ET RÉVÉLATEUR ÉLECTROPHOTOGRAPHIQUE
ISHIKAWA MAKOTO (author) / UEMURA TETSUYA (author)
2024-05-01
Patent
Electronic Resource
English
| European Patent Office | 2022
| European Patent Office | 2024
| European Patent Office | 2023
| European Patent Office | 2023
| European Patent Office | 2022