Belt conveyance apparatus and image forming apparatus
A technology of belt conveying and imaging unit, which is applied to the equipment, instruments, optics and other directions of the electrical recording process using charge graphics, which can solve the problems of difficult steering roller tilt control and poor color matching accuracy, etc.
Inactive Publication Date: 2015-03-25
CANON KK
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Problems solved by technology
However, the movement of the belt in the width direction caused by the tilting of the steering roller itself continues to occur
[0010] As described above, conventionally, it has been difficult to precisely and stably control the tilting of the steering roller when both the position and the yaw speed are changed due to the tilting of the steering roller itself
In addition, if the movement of the belt in the width direction occurs due to the inclination of the steering roller itself, the belt surface (on which a plurality of toner colors are to be matched) moves in the width direction, so that the accuracy of color matching deteriorates.
Method used
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[0025] Various exemplary embodiments, features, and aspects of the present invention will be described in detail below with reference to the accompanying drawings.
[0026] 1. Overall structure and operation of the imaging device
[0027] figure 1 is a schematic sectional view showing the image forming apparatus according to the first exemplary embodiment of the present invention. refer to figure 1 , the image forming apparatus 10 is a tandem printer employing an intermediate transfer method capable of forming a full-color image according to an electrophotographic method. The imaging device 10 performs operations described later in accordance with control signals received via the control interface.
[0028] The image forming apparatus 10 includes a plurality of image forming units 11Y, 11M, 11C, and 11K serving as image forming units arranged along a conveyance direction of an image receiving surface D of an intermediate transfer belt 71 described later. The imaging units ...
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A belt conveyance apparatus includes an endless belt and a plurality of rollers around which the belt is stretched, and receives an image on the endless belt at a predetermined image receiving surface in a conveyance direction of the belt. At least one of the plurality of rollers is a steering roller arranged on a downstream side of an image receiving position and capable of changing an arrangement angle thereof with respect to the belt by being tilted. If an area of the belt between the steering roller and the image receiving position in an opposite direction of the conveyance direction of the belt is assumed to be a predetermined area, a tilt axis of the steering roller is arranged on the predetermined area side of a rotational axis of the steering roller when viewing in the tilt axis direction. The invention also relates to an image forming apparatus with the belt conveyance apparatus.
Description
technical field [0001] The present invention relates to an image forming apparatus employing an electrophotographic method or an electrostatic recording method and including a belt conveying device. Background technique [0002] Conventionally, an electrophotographic image forming apparatus employs an endless belt (hereinafter also referred to as a belt) as a transfer material bearing member or an intermediate transfer member. More specifically, the intermediate transfer member carries the toner image transferred from the photosensitive member, and the transfer material carrying member carries and conveys the transfer material to which the toner image will be transferred from the photosensitive member. [0003] A large number of functions have been improved in an image forming apparatus employing a belt as an intermediate transfer member or a transfer material carrying member. For example, when a belt is used as an intermediate transfer member, toner images of a plurality o...
Claims
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IPC IPC(8): G03G15/01G03G15/16
CPCG03G15/1615G03G2215/00143G03G2215/00156G03G15/0189
Inventor 青柳孝阳森有里
Owner CANON KK