JPH0164655U

JPH0164655U -

Info

Publication number: JPH0164655U
Application number: JP1987159260U
Authority: JP
Priority date: 1987-10-20
Filing date: 1987-10-20
Publication date: 1989-04-25

Description

[Brief explanation of the drawing]

第１図〜第６図は本考案の実施例を示しており
、第１図はこの実施例に係るトナー供給装置が組
込まれた現像器の断面図、第２図はそのトナー供
給装置の一部切欠斜視図、第３図は第２図の部分
横断面図、第４図及び第５図は第１図の部分拡大
図、第６図は現像器の概略平面図、第７図は実施
例におけるフオトセンサとトナー搬送オーガの駆
動タイミングチヤートを示しており、また、第８
図〜第１３図は従来例を示しており、第８図は従
来のトナー供給装置が組込まれた現像器の断面図
、第９図は複数の現像器が配設された従来の現像
器の側面図、第１０図は現像器の背面側に組込ま
れた従来のトナー供給装置の断面図、第１１図は
そのトナー供給装置の一部切欠斜視図、第１２図
は現像器の背面側に組込まれてトナーボツクス内
にトナー搬送手段を備える従来のトナー供給装置
の断面図、第１３図はそのトナー供給装置の一部
切欠斜視図をそれぞれ示している。符号説明、１……現像器、２……仕切り壁、３
……トナーボツクス、４……トナー搬送オーガ、
５……コイル状オーガ、６……開口部、７……可
動片、８……フオトセンサ。 1 to 6 show an embodiment of the present invention, FIG. 1 is a sectional view of a developing device incorporating a toner supply device according to this embodiment, and FIG. 2 is a diagram showing an example of the toner supply device. 3 is a partial cross-sectional view of FIG. 2, FIGS. 4 and 5 are enlarged partial views of FIG. 1, FIG. 6 is a schematic plan view of the developing device, and FIG. 7 is a partial cross-sectional view of FIG. It shows the drive timing chart of the photo sensor and toner transport auger in the example, and also shows the
13 show conventional examples, FIG. 8 is a sectional view of a developing device incorporating a conventional toner supply device, and FIG. 9 is a sectional view of a conventional developing device equipped with a plurality of developing devices. A side view, FIG. 10 is a sectional view of a conventional toner supply device built into the back side of a developing device, FIG. 11 is a partially cutaway perspective view of the toner feeding device, and FIG. FIG. 13 is a cross-sectional view of a conventional toner supply device that is incorporated and includes a toner conveying means in a toner box, and FIG. 13 is a partially cutaway perspective view of the toner supply device. Code explanation, 1...Developer, 2...Partition wall, 3
...Toner box, 4...Toner transport auger,
5... Coiled auger, 6... Opening, 7... Movable piece, 8... Photo sensor.

Claims

[Scope of utility model registration request]

A toner supply system in which a toner box is connected to the rear side of the developing device via a partition wall, and toner is supplied into the developing device from an opening in the partition wall using a toner conveying means provided in the toner box. In the apparatus, a movable piece that is displaced by the toner transport flow force is disposed in the opening, and a detection means is provided for detecting the displacement of the movable piece to detect the presence or absence of toner in the toner box. A toner supply device featuring: