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US 2019/0196349 A1Published application
Toner, image forming apparatus, image forming method, and toner accommodating unit
AssigneeRicoh Company, Ltd.
InventorsToyoshi SAWADA, Kazumi SUZUKI, Yu NAITO
Life of this patent
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Abstract
A toner includes a europium complex represented by the following Chemical formula where A represents 2-naphthyl group, 2-naphthyl group having a substitution group selected from the group consisting of an alkyl group, an alkoxy group, and a halogen, R represents a fluoroalkyl group having one to three carbon atoms or a methyl group, and R1, R2, R3, and R4 each, independently represent hydrogen atoms, alkyl groups, or aryl groups, wherein the toner has a hydroxyl value of from 20 to 40 mgKOH/g.
Claims8
A toner comprising:
- a europium complex represented by the following Chemical formula 1
- where A represents 2-naphthyl group, 2-naphthyl group having a substitution group selected from the group consisting of an alkyl group, an alkoxy group, and a halogen, R represents a fluoroalkyl group having one to three carbon atoms or a methyl group, and R1, R2, R3, and R4 each, independently represent hydrogen atoms, alkyl groups, or aryl groups,
- wherein the toner has a hydroxyl value of from 20 to 40 mgKOH/g,
Dependencies are inferred from the claim text.