| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain an image forming device constituted so that an excellent image can be formed by suppressing the deterioration of non-magnetic one- component developer (toner, for example) and uniformly and properly electrifying the non-magnetic one-component developer. SOLUTION: This laser printer is constituted so that the toner T being as the non-magnetic one-component developer is triboelectrified and carried to the surface of a photoreceptor drum 23 by rotating a supply roller 28 and a developing roller 27 while bringing them into contact with each other. The roller 28 is the sparse foaming roller having open cells whose number is under 30 pieces per one inch. Since large pressure force does not act on the toner T, the toner T is not deteriorated. Besides, titanium oxide and silica are mixed and added to the toner T as additive. However, since the titanium oxide is provided with almost mediate electrifying property, the toner T is uniformly and properly electrified. Besides, the flowability of the toner T is enhanced by the silica.</p> |
