Developing device and image forming apparatus having the same

A developing device and equipment technology, which is applied in the direction of electric recording process equipment using charge patterns, electric recording technology using charge patterns, and electric recording technology, and can solve problems such as inability to perform toner transfer

Active Publication Date: 2009-11-04
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, the desired transfer of toner from the lower part (toner chamber) to the upper part (toner accumulation tray) cannot be performed

Method used

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  • Developing device and image forming apparatus having the same
  • Developing device and image forming apparatus having the same
  • Developing device and image forming apparatus having the same

Examples

Experimental program
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Embodiment Construction

[0019] will refer to figure 1 to 6 describe an image forming apparatus provided with a developing device according to an embodiment of the present invention. Throughout the specification, the terms "upward", "downward", "upper", "lower", "above", "below", "under" will be used assuming that the image forming apparatus is arranged in the orientation in which it is to be used , "Right", "Left", "Front", "Back" and so on. more specifically, figure 1 In , the left and right sides are the front and back, respectively.

[0020] The image forming apparatus 1 is a color multifunctional device selectively functioning as a printer, a copier, and a scanner. Such as figure 1 As shown, a multifunction device 1 has a substantially box-shaped housing 2, and mainly includes a flat bed scanner 3 arranged above the housing 2, a sheet supply mechanism 4 for supplying a sheet P as a recording medium, and An image forming unit 5 for forming an image on a supplied sheet P and a discharge roller...

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PUM

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Abstract

A developing device capable of facilitating toner delivery upward. The cartridge includes a developing roller, a toner supply roller disposed therebelow, a toner container disposed below the toner supply roller and defining an internal space for accommodating the toner. The container has an upper portion formed with an elongated opening having an upper edge and a lower edge. A conveying member isrotatably disposed in the internal space and in rotational contact with an inner surface of the container for delivering the developing agent upward. The developing agent container including a first wall portion for receiving thereon the developing agent passed through the opening. The first wall portion extends from the lower edge in a downstream direction with respect to a rotational direction of the conveying member toward a position close to a bottommost portion of the toner supply roller. The container also includes a second wall portion extending from the upper edge in an upstream direction with respect to the rotational direction. The conveying member is in simultaneous sliding contact with both the first wall portion and the second wall portion.

Description

[0001] Cross References to Related Applications [0001] This application claims priority from Japanese Patent Application No. 2008-117979 filed on April 30, 2008. The entire contents of the aforementioned prior applications are incorporated herein by reference. technical field [0002] The present invention relates to a developing device and an image forming apparatus provided with the developing device. Background technique [0003] In this field, there is known a tandem image forming apparatus in which a plurality of photosensitive drums are arranged in a row in the horizontal direction. Japanese Patent Application Publication No. 2003-29532 discloses an image forming apparatus provided with a toner container in which a toner chamber containing toner as a developer is arranged below a photosensitive drum. [0004] In such a conventional image forming apparatus, since the toner in the toner chamber must be conveyed upward against the gravity of the toner, it is difficult...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/08G03G15/01
CPCG03G21/1676G03G2215/085G03G15/0896G03G15/0808G03G15/0867
Inventor 佐藤正吾
Owner BROTHER KOGYO KK
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