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Developing device and image forming device

A developing device and developer technology, which are applied in the direction of electric recording process applying charge pattern, equipment for applying electric recording process of charge pattern, electric recording technique, etc., can solve the problems of wear and deterioration with time change, etc. , the effect of reduced retention, reduced retention

Active Publication Date: 2011-12-07
FUJIFILM BUSINESS INNOVATION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, in Patent Document 1, the toner caking preventing member (25) is made of a stainless steel plate, and the toner caking decomposing member (26) uses a PET film, which may deteriorate over time or may be caused by contact with the stainless steel plate. wear on contact

Method used

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  • Developing device and image forming device
  • Developing device and image forming device
  • Developing device and image forming device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] figure 1 It is an overall explanatory view of the image forming apparatus according to Embodiment 1 of the present invention.

[0073] exist figure 1 Among them, the image forming apparatus U has: an automatic document feeder U1; and an image forming apparatus main body U2 supporting the automatic document feeder U1 and having a transparent document reading surface PG at the upper end.

[0074] The automatic document feeder U1 has: a document feeder TG1 that stacks and stores a plurality of documents Gi to be copied; The document Gi conveyed by the upper document reading position.

[0075] The image forming apparatus main body U2 includes: an operation unit UI for allowing a user to input operation command signals such as operation start of an image forming operation; and an exposure optical system A and the like.

[0076] The reflected light from the document conveyed above the document reading surface PG by the automatic document conveying device U1 or the document...

Embodiment 2

[0136] Next, Embodiment 2 of the present invention will be described. In the description of Embodiment 2, constituent elements corresponding to those of Embodiment 1 will be assigned the same reference numerals, and detailed description thereof will be omitted.

[0137] The second embodiment differs from the first embodiment in the following points, and has the same configuration as the first embodiment in other respects.

[0138] Figure 7 It is an enlarged view of main parts of the crushing unit of Example 2.

[0139] Figure 8 It is a cross-sectional view of the main part of the third inflow part of embodiment 2, which is the same as that of embodiment 1. Figure 5 corresponding figure.

[0140] exist Figure 7 , Figure 8In the developing devices Gy to Gk of Embodiment 2, the crushing and conveying member 41 and the eccentric cam portion 28f of Embodiment 1 are omitted, and as an example of the crushing member, a so-called spring spiral formed by forming a wire rod in...

Embodiment 3

[0148] Next, Embodiment 3 of the present invention will be described. In the description of this Embodiment 3, the constituent elements corresponding to those of Embodiments 1 and 2 are assigned the same reference numerals, and detailed description thereof will be omitted.

[0149] This third embodiment differs from the aforementioned embodiments 1 and 2 in the following points, and is configured in the same manner as the aforementioned embodiments 1 and 2 in other respects.

[0150] Fig. 9 is an explanatory diagram of a pulverizing member of Example 3, Figure 9A is the floor plan, Figure 9B It is a sectional view of the main part.

[0151] In FIG. 9 , in the developing devices Gy to Gk of Embodiment 3, as an example of a crushing member, a so-called spring coil crushing coil 61 formed by forming a wire rod in a helical shape is disposed at the replenishment inflow portion E3 . The rear end 61 a of the crushing coil 61 is fixedly supported by the partition wall 12 , and th...

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Abstract

The present invention provides a developing device and an image forming device capable of reducing developer concentration in a region receiving force in a direction opposite to the direction in which the developer flows, using a member that conveys the developer. The developing device (Gy) has: a first developer storage chamber for storing developer supplied to the developer holder (R0y); a second developer storage chamber disposed below the first developer storage chamber; The first conveying member, which conveys the developer in the first developer storage chamber; the second conveyance member (26), which conveys the developer in the second developer storage chamber, and at the same time, transfers the developer from the second developer storage chamber to Rotate in the direction of lifting to the first developer storage chamber; the third inflow part (E3), which makes the new developer flowing in from the new developer inflow part (3a) flow into the second developer storage chamber; and the crushing member (41) , which is arranged in the third inflow portion, and crushes the developer in the third inflow portion.

Description

technical field [0001] The present invention relates to a developing device and an image forming device. Background technique [0002] As technologies related to conventional electrophotographic image forming apparatuses, technologies described in the following Patent Documents 1 and 2 are known. [0003] In Japanese Unexamined Patent Application Publication No. 2005-202234 as Patent Document 1, a technique is described in which the developer is supplied to the toner supply port (20) of the developer container (16) where the developing sleeve (15) is arranged. On the agitator (21), install the toner caking prevention part (25), and set the toner caking decomposition part (26) at the toner supply port (20), which is connected with the toner caking prevention part (25) swing by contact. In the technique described in Patent Document 1, when the toner is replenished by the agitator ( 21 ) in a state where the toner is saturated during low-density image formation, force is appl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/01G03G15/08
Inventor 久保圭佑平田启大贯富夫积田敏和坂本孝上原大洋河野裕久河村明嗣越森一伦岩田尚也加藤裕哉
Owner FUJIFILM BUSINESS INNOVATION CORP
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