| 摘要 |
<p>PURPOSE:To provide a toner giving a copied image always maintaining high reflection image density, having superior image quality and free from fog without causing the scattering of the toner even when copying is repeated many times in a recycling system over a long period of time. CONSTITUTION:This toner contains at least a resin binder, a releasing agent and a colorant. The number average mol.wt. of the resin binder calculated by gel permeation chromatography is 3,000-150,000 and the wt. average mol.wt. is 6,000-1,000,000. The releasing agent contains at least polypropylene and further contains polyethylene, hydrocarbon wax or amide wax.</p> |
