发明名称 TWO-COMPONENT DEVELOPER, REPLENISHING DEVELOPER, AND IMAGE-FORMING METHOD
摘要 An object of the present invention is to provide a two-component developer which can achieve a high-definition image with a smaller toner laid-on level than a conventional one, provides a color gamut comparable to that of printing, can respond to an increase in printing speed, and allows an image with a stable tinge to be formed even in long-term use. The object can be achieved by a two-component developer containing a cyan toner and a magnetic carrier, the two-component developer being characterized in that the cyan toner has the following characteristics: (i) when the concentration of the cyan toner in a solution of the cyan toner in chloroform is represented by Cc (mg/ml) and the absorbance of the solution at a wavelength of 712 nm is represented by A712, a relationship between Cc and A712 satisfies the relationship of 2.00<A712/Cc<8.15; (ii) the lightness L* and chroma C* of the cyan toner determined in a powder state satisfy the relationships of 25.0<=L*<=40.0 and 50.0<=C*<=60.0; and (iii) the absolute value for the triboelectric charge quantity of the cyan toner measured by a two-component method using the cyan toner and the magnetic carrier is 50 mC/kg or more and 120 mC/kg or less.
申请公布号 US2008286668(A1) 申请公布日期 2008.11.20
申请号 US20080182031 申请日期 2008.07.29
申请人 CANON KABUSHIKI KAISHA 发明人 ISHIGAMI KOH;TERAUCHI KAZUO;UMEDA NORIYOSHI;IDA TETSUYA;OKAMOTO NAOKI;HOTTA YOJIRO;BABA YOSHINOBU;ITAKURA TAKAYUKI;YAMAMOTO TAKESHI;HARAGUCHI MANAMI;KUBO KENTA
分类号 G03G9/087;G03G13/04 主分类号 G03G9/087
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