Image forming apparatus
First Claim
1. An image forming apparatus of a tandem type comprising image forming stations for respective colors arranged along a transfer belt, each image forming station including an image carrier, a charging means and a developing means disposed around said image carrier, wherein the transfer belt is passed through the respective image forming stations, thereby forming a multi-color image, said image forming apparatus being characterized in that said transfer belt is laid around the driving roller and the driven roller with a constant tension, one of the driving roller and the driven roller is positioned obliquely above the other roller, the driving roller and the driven roller are disposed such that the belt tension side at the time of driving the transfer belt is on the lower side, and the image carriers of the respective image forming stations are in contact with the belt tension side.
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Accused Products
Abstract
To prevent a belt and image forming means from being stained by spilled toner and also reduce the vibration of an exposure means. An image forming apparatus is of a tandem type in which mage forming stations Y, M, C, K for respective colors are arranged along a transfer belt 14. Each image forming station Y, M, C, K has an image carrier 17, a charging means 19 and a developing means 20 which are arranged around the image carrier 17. The image forming apparatus forms a multi-color image by passing the transfer belt 14 through the respective image forming stations. The transfer belt 14 is laid around a driving roller 12 and a driven roller 13 with a constant tension. One of the driving roller and the driven roller is positioned obliquely above the other roller, the driving roller and the driven roller are disposed such that the belt tension side at the time of driving the transfer belt is on the lower side, and the image carriers of the respective image forming stations are in contact with the belt tension side.
32 Citations
39 Claims
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1. An image forming apparatus of a tandem type comprising image forming stations for respective colors arranged along a transfer belt, each image forming station including an image carrier, a charging means and a developing means disposed around said image carrier, wherein the transfer belt is passed through the respective image forming stations, thereby forming a multi-color image, said image forming apparatus being characterized in that
said transfer belt is laid around the driving roller and the driven roller with a constant tension, one of the driving roller and the driven roller is positioned obliquely above the other roller, the driving roller and the driven roller are disposed such that the belt tension side at the time of driving the transfer belt is on the lower side, and the image carriers of the respective image forming stations are in contact with the belt tension side.
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8. An image forming apparatus comprising image forming stations for respective colors arranged along a transfer belt, each image forming station including an image carrier, a charging means and a developing means disposed around said image carrier, wherein the transfer belt and the respective image forming stations are arranged obliquely or vertically, said image forming apparatus being characterized in that
an exposure means for forming latent images onto said image carriers is located below said respective image forming stations.
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15. An image forming apparatus comprising image forming stations for respective colors arranged along a transfer belt, each image forming station including an image carrier, a charging means and a developing means disposed around said image carrier, wherein the transfer belt and the respective image forming stations are arranged obliquely or vertically, said image forming apparatus being characterized by further comprising:
a housing body in which said respective image forming stations and the transfer belt are arranged; and
a first movable section and a second movable section which are attached to said housing body such that the first and second movable sections are pivotally movable relative to said housing body, wherein a paper handling means and a fixing means are located in said first movable section and at least one of developing means, image carriers, and the transfer belt is located in said second movable section.- View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. An image forming apparatus comprising image forming stations for respective colors arranged along a transfer belt, each image forming station including an image carrier, a charging means and a developing means disposed around said image carrier, wherein the transfer belt and the respective image forming stations are arranged obliquely or vertically, said image forming apparatus being characterized by comprising
a housing body in which said image forming stations and said transfer belt are arranged, and a movable section which is attached to said housing body such that the movable section is pivotally movable relative to said housing body, wherein a group of the transfer belt and the image carriers or a group of the transfer belt, the image carriers, and the developing means are arranged inside said movable section.
Specification