Image forming device

Abstract

In an image forming apparatus in which a plurality of feeders can be added, a main body driving portion is provided in an apparatus main body and a drive feeder having a driving portion is provided. The main body side driving portion drives an adjacent feeder, and the driving portion of the drive feeder drives the drive feeder and a feeder adjacent to the drive feeder. In the image forming apparatus, it is unnecessary to provide a dedicated driving portion in an additional feeder, it is also unnecessary to supply a driving force to the additional feeder from the apparatus main body. Therefore, no limitation is required of the additional feeder, and cost increase for an entire product can be prevented.

Description

technical field [0001] The present invention relates to an image forming apparatus, in particular to an image forming apparatus in which a plurality of paper feeding devices can be added in the up and down direction on a device body having an image forming portion, and each of the paper feeding devices has a paper storage unit. The paper storage section and the paper supply section that feeds paper from the paper storage section. Background technique [0002] In the past, in image forming devices such as copiers and printers, which are mainly low and medium speed grades, a plurality of paper feeding devices can be added in the upper and lower directions at the lower part of the device body including the image forming part. A paper storage unit for feeding paper to the image forming unit and a paper feeding unit for feeding paper from the paper storage unit. [0003] Figure 11 It is a diagram showing an example of an extension state of a paper feeding device of such a conve...

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Problems solved by technology

[0010] Also, as stated Figure 12 As shown, in the configuration in which the drive is supplied from the device body 100 to the additional paper feeding device 103, it is difficult to achieve a balance between cost and the number of paper feeding stages.

That is, if a plurality of paper feeding devices can be installed, in order to drive each paper feeding device, the main motor 101 of the device body 100 must be enlarged, resulting in an increase in the cost of the standard model (device body 100) without additional paper feeding devices. Large, burdening users who only use standard models

In addition, if the cost of the standard model (apparatus body 100) is emphasized and the size of the main motor 101 is suppressed, the number of additional stages of the additional paper feeding device 103 is limited, and it cannot meet the requirements for forming images in various sizes and types. The requirements of the users of the paper

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