Developing device

Abstract

A developing device includes a developer carrier which carries a developer, a developing unit housing which rotatably supports the developer carrier, a side seal member which comes into slidable contact with both ends of the developer carrier, a sheet-like elongated seal member which extends in the axial direction of the developer carrier so as to come into slidable contact with the developer carrier, a side seal attachment surface which is formed in the developing unit housing and to which the side seal member is attached, and a support portion which is formed in the developing unit housing and protrudes toward the developer carrier from the side seal attachment surface to support the elongated seal member. The elongated seal member is attached onto the support portion in a state where both ends thereof overlap the side seal member and are opposite the side seal attachment surface. A filler is filled in a gap surrounded by the elongated seal member, the side seal member, the support portion, and the side seal attachment surface. A protrusion for suppressing the spread of the filler is formed at the side seal attachment surface at a predetermined interval from the support portion.

Description

[0001] The present invention is based on Japanese patent application No. 2008-264154 filed on October 10, 2008, Japanese patent application No. 2008-264162 filed on October 10, 2008, Japanese patent application filed on October 10, 2008 Application No. 2008-264165, Japanese patent application filed on October 10, 2008 Application No. 2008-264169, Japanese patent application filed on October 10, 2008 Application No. 2008-264176, October 10, 2008 application Japanese Patent Application Application No. 2008-264532, the contents of which are incorporated herein by reference. technical field [0002] The present invention relates to a developing device having a side seal member for sealing between both ends of a developing roller (developer carrier) and a developer frame. Background technique [0003] Conventionally, there is known a developing device comprising: a rotatable developing roller carrying toner, side seal members slidably in contact with both ends of the developing r...

AI Technical Summary

Problems solved by technology

[0030] The sealing member has an elastic layer made of sponge, etc., and an adhesive base material for sticking to a case, etc., but if one end of the frame seal is sunk into the backside of the blade to seal the gap between the sealing members, it may Gaps are created as the blade back seal is dented by the adhesive substrate, which is harder than the frame seal's elastic layer, against the blade back seal

[0031] It is also possible to suppress toner leakage by filling the gap with grease or the like, but there is a problem that a process of filling the grease or the like is required, which complicates the manufacturing method.

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