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Developing cartridge

A development cartridge and developer technology, applied in the field of development cartridges, can solve problems such as toner leakage

Active Publication Date: 2017-01-11
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if creases are formed on the double-sided tape when the lower film member and the upper seal are stuck to the case, the toner may leak out through the gap formed between the case and the creases on the tape.

Method used

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Experimental program
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Effect test

no. 2 approach

[0181] In the second embodiment, additional two first accumulation recesses 67A are further formed at positions on the rear side of the two first accumulation recesses 67 of the first embodiment on the upper surface of the lower seal holding lower wall 62 . Therefore, a total of four first accumulation recesses 67 ( 67 , 67A) are formed on the lower seal holding lower wall 62 . A first restricting protrusion 68 is provided in each of the first accumulation recesses 67 , 67A. The first restriction protrusions 68 are arranged such that the first accumulation recesses 67 , 67A spaced apart in the front-rear direction are aligned in the front-rear direction (ie, the rotation direction X of the developing roller 11 ).

[0182] Providing a plurality of first restricting protrusions 68 along the rotational direction X of the developing roller 11 can reliably restrict the movement of the lower seal 105 as the developing roller 11 rotates.

[0183] The developing cartridge 7A of the s...

no. 5 approach

[0196] next combine Figure 8B A developer cartridge 7D according to a fifth embodiment of the present invention will be described. In the following description of the fifth embodiment, the same components and components as those of the first embodiment are denoted by the same reference numerals in order to avoid redundant description.

[0197] In the first embodiment described above, the second accumulation recess 81 is formed on the upper seal holding front wall 77 of the upper seal holding unit 55, and the second restriction protrusion 82 is provided on the second accumulation recess 81. The second restricting protrusion 82 protrudes to the upper seal 107 to hold the upper seal 107 in the upper seal holding unit 55 .

[0198] However, in the fifth embodiment, the second accumulation recess 81 and the second restriction protrusion 82 are omitted. Instead, the thickness restricting sheet 13D of the fifth embodiment is provided with a back plate 134 .

[0199] The rear plat...

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PUM

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Abstract

The invention provides a developing cartridge. The developing cartridge includes: a frame body defining a developer chamber for accommodating developer therein, the frame body being formed with an opening elongated in the length direction for allowing the developer to flow out of the a developer chamber; a member assembled to the frame at a position opposite to the developer chamber with respect to the opening; a seal extending in the length direction between the member and the frame; and a protruding portion protruding from one of the frame body and the member to the sealing member in a protruding direction crossing the length direction, the protruding portion contacting the sealing member but not adhering the sealing member to limit the movement of the seal along the length direction.

Description

technical field [0001] The present invention relates to a developing cartridge mountable in an electrophotographic type image forming apparatus. Background technique [0002] A known electrophotographic type image forming apparatus accommodates a developing device in a detachable manner. A developing device detachably installed in this type of printer includes a housing for accommodating toner, a developing roller supported in the housing for bearing on its peripheral surface, and a thickness regulating sheet. The toner, thickness restricting sheet restricts the thickness of the toner carried on the peripheral surface of the developing roller. A developing roller and a thickness-regulating sheet are arranged in such a developing device at a position near an opening formed in a casing. Therefore, it is necessary to prevent the toner from leaking out of the case through gaps between the case and the developing roller, and between the case and the thickness-regulating sheet. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/08
CPCG03G15/0817G03G15/0898
Inventor 板桥奈绪
Owner BROTHER KOGYO KK