Image forming apparatus, electrostatic charge image developer, and electrostatic charge image developing toner
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United States of America Patent
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Mar 13, 2018
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app pub date -
Jul 27, 2016
filing date -
Mar 25, 2016
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Abstract
An image forming apparatus includes a developing unit that contains an electrostatic charge image developer which contains a carrier and an electrostatic charge image developing toner, wherein the toner includes toner particles which contain a polyester resin, which is a polycondensate of a polycarboxylic acid and a polyol, and has a glass transition temperature of 50° C. to 70° C., the polyol includes a polyol not having a bisphenol A structure in a range of 50% by weight to 100% by weight, and a melt viscosity A of the toner at 110° C. after storage for 2 hours under the environment of absolute humidity of 82.7 (g/m3) and a melt viscosity B of the toner at 110° C. after storage for 2 hours under the environment of absolute humidity of 16.5 (g/m3) each are in the ranges specified in the specification.
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