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 |
EP2735908(B1) |
申请公布日期 |
2016.04.20 |
申请号 |
EP20130196943 |
申请日期 |
2008.02.01 |
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 |
G03G9/09;G03G9/08;G03G9/10 |
主分类号 |
G03G9/09 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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