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Developing unit, process cartridge, image forming device, and developer replenishing method

A developing device and developer technology, which are applied in the direction of electric recording process applying charge pattern, equipment for electric recording process applying charge pattern, electric recording technique, etc. Switching to new toners at an earlier stage, inability to adequately control image quality, etc., achieves the effect of suppressing the degradation of image quality and achieving good development

Inactive Publication Date: 2016-01-06
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is instability in the period from using the old toner to switching to the new toner, sometimes switching to the new toner earlier than the specified number of times, and sometimes ending with Switch to a new toner at a stage later than the specified number of times
When switching to new toner earlier than the specified number of times, although the new toner is used for development, since the development is performed under the development conditions corresponding to the old toner, the leading to a decrease in image quality
In addition, when switching to the new toner at a stage later than the predetermined number of times, although the old toner is used for development, since the development is performed under the development conditions corresponding to the new toner, it is also will result in a decrease in image quality
In this way, even under the developing conditions corresponding to the old toner, it is not possible to sufficiently control the deterioration of image quality from the time of unified toner replenishment to the start of image formation.

Method used

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  • Developing unit, process cartridge, image forming device, and developer replenishing method
  • Developing unit, process cartridge, image forming device, and developer replenishing method
  • Developing unit, process cartridge, image forming device, and developer replenishing method

Examples

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Deformed example 1

[0119] Figure 6 Shown is a schematic configuration diagram of a process unit 26 including a development unit 23 according to Modification 1. As shown in FIG.

[0120] Such as Figure 6 As shown, the developing unit 23 of Modification 1 includes a waste toner recovery container 16 .

[0121] As shown in the figure, the waste toner recovery container 16 is provided in the opposite side of the developing assembly from the photoreceptor assembly 10 . In addition, the toner supply port 89 is provided at a portion facing the upper surface of the waste toner recovery container 16 .

[0122] Figure 7 Shown is a schematic diagram of a transport path for transporting waste toner removed by the cleaning device 83 .

[0123] Such as Figure 7 As shown, the waste toner removed from the surface of the photoreceptor 24 by the cleaning blade 83 a of the cleaning device 83 is conveyed to the waste toner conveying path 14 via the waste toner coil 83 b. Then, the waste toner conveyed tow...

Deformed example 2

[0142] Figure 14 Shown is a schematic configuration diagram of a toner cartridge in a developing unit according to Modification 2. FIG.

[0143] In Modification 2, the toner cartridge 110 supplied with new toner is used as a waste toner collection container.

[0144] Such as Figure 14 As shown, except that toner cartridge 110 is provided with toner supply port 110a and supply port shutter member 113 for opening and closing toner supply port 110a on the surface facing toner supply port 89, have and Figure 9 The illustrated waste toner recovery container 16 has basically the same configuration.

[0145] Such as Figure 14 As shown, when the new toner T1 is stored in the toner cartridge 110 , the toner supply port 110 is closed by the supply port shutter member 113 . In addition, the waste toner recovery port 19 is closed by a sealing member 19a.

[0146] Next, toner replenishment in Modification 2 will be described using FIG. 15 .

[0147] As shown in FIG. 15(a), in or...

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PUM

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Abstract

The present invention provides a developing assembly, a process cartridge, an image forming apparatus, and a developer replenishing method that can suppress deterioration in image quality after developer replenishment. The developing unit (23) in a state where the new developer (T1) in the toner cartridge as the developer storage container is uniformly supplied changes based on the posture when installed in the image forming apparatus body. When the position is inverted up and down in the vertical direction (reversed position), the toner supply port (89) serving as the developer supply port is arranged closer to the hopper portion (86) serving as the developer accommodating portion. The water level of the toner developer is further vertically upward.

Description

technical field [0001] The present invention relates to a developing assembly, a process cartridge, an image forming device and a developer replenishing method. Background technique [0002] Conventionally, it is well known that when the toner used as the developer in the developing unit decreases, brand new toner is put in at once from a toner container which is a developer container containing new toner. A developing assembly with a unified (one-pack) toner replenishment method into the developing assembly (eg, Patent Documents 1 and 2). [0003] Specifically, the developing unit includes a toner hopper as a developer container for storing toner, which is arranged to extend vertically upward from a developer supply member to be retained in the developing The developer in the vertically lower side of the assembly is pumped up and supplied to the developer carrier. A toner supply port as a developer supply port is provided on the upper surface of the toner hopper, and the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/08G03G21/18G03G15/00
Inventor 村松武流
Owner RICOH KK