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US 10,488,776 B2Granted
Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge
AssigneeFuji Xerox Co., Ltd.
InventorsYutaka Saito, Sakon Takahashi, Moegi Iguchi, Mona Tasaki, Soutaro Kakehi, Yuka Yamagishi
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Abstract
An electrostatic charge image developing toner includes a toner particle, a lubricant particle that is externally added to the toner particle, and a strontium titanate particle that is externally added to the toner particle, that has an average primary particle diameter of 10 nm or more and 100 nm or less, that has an average primary particle circularity of 0.82 or more and 0.94 or less, and that has a primary particle circularity that becomes 84% of accumulation of more than 0.92.
Claims19
An electrostatic charge image developing toner comprising:
- a toner particle;
- a lubricant particle that is externally added to the toner particle;
- and
- a strontium titanate particle that is externally added to the toner particle, that is doped with a metal element other than titanium and strontium, that has an average primary particle diameter of 10 nm or more and 100 nm or less, that has an average primary particle circularity of 0.82 or more and 0.94 or less, and that has a primary particle circularity of more than 0.92 at the point in which accumulation of primary particles reaches 84%.
1 more element
Dependencies are inferred from the claim text.