Image forming apparatus
First Claim
1. A photoreceptor cleanerless image forming apparatus to overlappingly form yellow, magenta, cyan, and black toner images, wherein said apparatus is conditioned to decrease color mixture or exposure error with respect to at least one of an exposure intensity, an exposure resolution, a volume-based average particle diameter of toner, a light source wavelength, a layer thickness of toner to be transferred, and the weight-based average charged amount of toner.
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Accused Products
Abstract
There is provided a photoreceptor cleanerless image forming apparatus capable of decreasing color mixture or an exposure error due to reverse transfer toner or untransferred toner.
An image forming apparatus 100 according to the present invention comprises four image forming units 100a, 100b, 100c, and 100d configured to be photoreceptor cleanerless in a 4-drum tandem manner. Each image forming unit includes a photoreceptor 103a, 103b, 103c, or 103d, a charger 105a, 105b, 105c, or 105d, an exposure apparatus 106a, 106b, 106c, or 106d, and a developing apparatus 109a, 109b, 109c, or 109d. When exposure intensities Iy, Ic, Im, and Ik are assumed for exposure sources of the exposure apparatuses in the image forming units which form yellow, magenta, cyan, and black images, respectively, the exposure intensities are configured to satisfy conditions of Ik≧Ic≧Im≧Iy and Ik>Iy. This decreases an exposure error (image hysteresis) in an image formed on paper.
4 Citations
37 Claims
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1. A photoreceptor cleanerless image forming apparatus to overlappingly form yellow, magenta, cyan, and black toner images,
wherein said apparatus is conditioned to decrease color mixture or exposure error with respect to at least one of an exposure intensity, an exposure resolution, a volume-based average particle diameter of toner, a light source wavelength, a layer thickness of toner to be transferred, and the weight-based average charged amount of toner.
Specification