| 摘要 |
<p>PROBLEM TO BE SOLVED: To successfully combine oilless fixing and prolonging of the service life of a developing device. SOLUTION: In a synchronized distribution curve of equivalent particle diameter of synchronized additives against the equivalent particle diameter of toner base particle, the covered rate by the additives in the equivalent particle diameter of toner base particle equal to an average diameter of toner is made to be a reference value and the additives covering rate in the equivalent particle diameter of toner base particle which is smaller than the average particle diameter of the toner is made to be below a virtual reference line when the virtual reference line is provided with the additives covering rate obtained from the reference value is constant.</p> |
