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Rotary developing device and image forming device using the developing device

A developing device and a rotary technology, which are applied in the fields of electric recording technology using charge patterns, equipment for electric recording technology using charge patterns, and electric recording techniques, etc., which can solve the problems of reducing image uniformity, sealing difficulties, toner scattering, etc. problems, to achieve the effect of avoiding substrate contamination, reducing stress, and good delivery

Inactive Publication Date: 2004-03-24
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] If the stress in the toner continues, the additive particles in the toner are buried in the toner particles, the appearance of the additive mixing ratio changes, the shape of the toner changes from crushed to a rounded shape, or the average particle size of the toner becomes smaller, Changes in toner fluidity or chargeability, etc., reduce image uniformity, cause image degradation such as base stains
[0013] In addition, if the developing device described in JP-A-5-313488 is applied as it is to a rotary developing device, when the opening of the developing device faces downward, the toner stored in the developing device may leak from the opening. come out, sealing is difficult, and the problem of toner scattering occurs

Method used

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  • Rotary developing device and image forming device using the developing device
  • Rotary developing device and image forming device using the developing device
  • Rotary developing device and image forming device using the developing device

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Experimental program
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Embodiment Construction

[0054] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0055] figure 1 It is an overall schematic configuration diagram of the internal mechanism of the color image forming apparatus, and the rotary developing device of the present invention is installed in the illustrated color image forming apparatus.

[0056] Symbol 1 in the figure represents the photoreceptor belt that has flexibility as belt-shaped image carrier, and this photoreceptor belt is stretched between turning roller 2, 3, and by driving turning roller 2 to turn, photoreceptor belt 1 is toward arrow A direction ( Clockwise) Rotate movement.

[0057] Reference numeral 4 in the figure denotes a charging charger as a charging device for uniformly charging the surface of the photoreceptor belt 1 , symbol LW in the figure denotes a laser optical device as an electrostatic latent image exposing device, and reference numeral 5 in the figure denotes a...

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PUM

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Abstract

The invention relates to a rotary type developing device of an image forming device. The inside of a case 26 of a developing device 26 is isolated by an isolating member 28 while leaving a communicative path 27, a developer storage part 32 where the developer is temporarily stored and a developing part 33 where the developer fed through the communicative path 27 is stuck to a photoreceptor belt 1 are provided. Then, a plurality of developing units 23 consisting of the developing device and developer container are provided, and either one of the developing units 23 is selected by rotation and moved to a developing position to develop an electrostatic latent image formed on the photoreceptor belt. To prevent an image from being deteriorated in uniformity and being deteriorated due to surface soiling or the like by preventing toner from being stressed and stably feeding developer in a rotary type developing device of an image forming device.

Description

technical field [0001] The present invention relates to a rotary developing device and an image forming device using the developing device. More specifically, the rotary developing device is provided with a plurality of developing units consisting of developing devices and developer storage containers for supplying developer to the developing devices. One of the developing components is transferred back to the developing position to develop the electrostatic latent image formed on the image carrier; the above-mentioned image forming device using the developing device can be, for example, a multi-color copier capable of color recording or black and red two-color recording, Image forming devices such as facsimile machines, printers, and multifunction machines. Background technique [0002] Conventionally, image forming apparatuses such as full-color copiers and image forming apparatuses such as multi-color copiers are widely known. The image forming devices such as the above-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/08G03G15/01G03G15/06
CPCG03G15/0126G03G2215/0177G03G15/06
Inventor 木村则幸
Owner RICOH KK
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