发明名称 LIQUID DEVELOPER AND IMAGE FORMING METHOD
摘要 PROBLEM TO BE SOLVED: To provide a liquid developer and an image forming method to dissolve surface staining and by which high image density is obtained. SOLUTION: The liquid developer exists within a range that ratio of a dielectric constant in 0.1 Hz to a dielectric constant in 1 kHz is 1 to 1.5. In addition, phase difference with an AC power source when an AC impedance in 0.4 kHz on a condition of toner concentration of 3 mass % is measured is <=60 degrees. In addition, when an equivalent circuit in which two sets of serial components of resistor and capacitor are arranged in parallel is approximated from a measurement result of the AC impedance, a larger value among values obtained by multiplying a calculation value of the serial components of the resistors and capacitors in the respective sets is <=5. In addition, field intensity by which the measurement values become discontinuous when voltage scan is performed is <=5×10<5> volt/m in measurement of the AC impedance of frequency of 0.5 Hz.
申请公布号 JP2002258540(A) 申请公布日期 2002.09.11
申请号 JP20010060690 申请日期 2001.03.05
申请人 RICOH CO LTD 发明人 UMEMURA KAZUHIKO;TSUBUSHI KAZUO;ASAMI TAKESHI;ISHIKAWA AIKO
分类号 G03G9/12;(IPC1-7):G03G9/12 主分类号 G03G9/12
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