Developing device and manufacturing method thereof
A development device and a manufacturing method technology, applied in the direction of manufacturing tools, electric recording technology using charge patterns, equipment for electric recording technology using charge patterns, etc., capable of solving problems such as blade deformation
Inactive Publication Date: 2015-09-30
BROTHER KOGYO KK
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- Summary
- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
However, in this case, if the blade is welded from the other end side to the one end side, the one end of the blade that thermally expands in the longitudinal direction due to welding and the The member that positions the end of the blade in the direction collides, causing the blade to deform
Method used
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[0028] Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
[0029] Such as figure 1 As shown, the developing device 1 mainly includes: a developing roller 2 as an example of a developer carrier; a supply roller 3; a blade unit 4; and a developing casing 5 holding these members.
[0030] The developing case 5 has a toner containing chamber 53 (refer to figure 2 ) container has an opening 51 on one side. The developing case 5 has a blade fixing surface 52 , which constitutes the edge of the opening 51 and is used for fixing the blade unit 4 .
[0031] Such as figure 2 As shown, the toner storage chamber 53 is provided with a transport member 7 for transporting the toner to the supply roller 3 . The transport member 7 has a shaft portion 71 rotatably supported by the developing housing 5 , and a film 72 that rotates around the shaft portion 71 when the shaft portion 71 rotates.
[0032] Such as figure 1 As...
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Abstract
There is provided a method for manufacturing a developing device including a developer carrier having a rotation axis extending in a first direction, a blade and including a first end portion and a second end portion, and a supporting member supporting the blade. The method includes the steps of positioning the blade, and welding the blade onto the supporting member by irradiating a laser beam onto the blade while moving at least one of the blade and the laser beam relative to the other of the blade and the laser beam. The positioning includes positioning the first end portion in the first direction and a second direction perpendicular to the first direction, and positioning the second end portion in the second direction without being positioned with respect to the first direction. The welding includes moving the laser beam from a first end portion side toward a second end portion side.
Description
technical field [0001] The present invention relates to a developing device having a blade unit formed by welding a blade to a supporting member and a method of manufacturing the developing device. Background technique [0002] Conventionally, there is an electrophotographic image forming apparatus including a developing device including a developing roller and a blade unit for regulating the thickness of a developer layer carried on the developing roller. Among the blade units, there is known a blade unit having a blade in contact with a developing roller, and a support member overlapping the blade for supporting the blade, the blade and the support member being fixed by welding. [0003] In the technique described above, for example, when positioning the blade with respect to the support member, one end of the blade is positioned in the long and short directions with respect to the support member, and the other end is positioned in the short direction. However, in this ca...
Claims
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IPC IPC(8): G03G15/08G03G21/16
CPCG03G15/0812B23K26/24B23K26/08G03G21/1676B23K26/0869B23K26/22B23K26/323B23K26/244B23K2101/34B23K2101/35B23K2103/04B23K2103/05B23K2103/08B23K2103/12B23K2103/18
Inventor 吉住光横井淳一
Owner BROTHER KOGYO KK