| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a protective layer forming device that can stably supply a constant amount of protective agent over a long period at a low applied pressure to an image carrier without deterioration or rupture of a protective agent supply member.SOLUTION: A protective layer forming device has a powdery image carrier protective agent that comprises a granulated material including a fatty acid metal salt and inorganic lubricant, and a roller-shape protective agent supply member that supplies the powdery image carrier protective agent to the surface of an image carrier. A preferable embodiment of the granulated material is where the median size (D50) in a volume reference particle size distribution, which has been obtained by measuring by a laser diffraction scattering type particle size distribution measurement method, is 50μm or more and 1,100μm or less.</p> |
