| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain an output image with high resolution and to realize a long life of a photoreceptor. <P>SOLUTION: In a quadruple tandem cleanerless image forming apparatus, the film thickness of each photoreceptor in photoreceptor drums 703a, 703b, 703c, 703d is specified to ≤17.5 μm, the semiconductor laser oscillator 60 of an exposure apparatus 50 uses a blue laser with 410 nm wavelength, and the beam diameter for exposure is controlled to the range of 25 μm to 40 μm. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
