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AssigneeSharp Kabushiki Kaisha
InventorsShigeki Hayashi, Takafumi Nagai
Estimating the term…
A developing device includes a developer tank and a developing roller. An internal space of the developer tank is divided into an upper conveying path, a lower conveying path, a communication path, a main pumping conveying path section, and a developer supply path, by a partition wall. A developer pumping conveying section conveys a developer inside the main pumping conveying path section in a conveyance direction Z, and includes an inner spiral blade, a rotational tube, a first outer spiral blade, a second outer spiral blade, a pumping rotation shaft member, and a pumping gear. An attracting magnet is located in a position horizontally spaced from the rotational tube.
A developing device for storing a developer containing a ferromagnetic substance and supplying the developer to an image bearing member to develop an electrostatic latent image formed on the image bearing member, comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Arrangements for preparing, mixing, supplying or dispensing developer: arrangements for conveying and conditioning developer in the developing…
Electrography
About 5 years 6 months of term left · ends 9 May 2032 (estimated)
This application claims priority to Japanese Patent Application No. 2010-294280, which was filed on Dec. 28, 2010, the contents of which are incorporated herein by reference in its entirety.
1. Field of the Technology
The present technology relates to a developing device, an image forming apparatus, and a developer agitating and conveying method.
Other and further objects, features, and advantages of the technology will be more explicit from the following detailed description taken with reference to the drawings wherein:
FIG. 1 is a schematic view showing a configuration of an image forming apparatus;
FIG. 2 is a schematic view showing a configuration of a toner cartridge;
Now referring to the drawings, preferred embodiments are described below.
First, an image forming apparatus 100 having a developing device 200 according to a first embodiment will be described. FIG. 1 is a schematic view showing a configuration of the image forming apparatus 100. The image forming apparatus 100 is a multi-functional peripheral which has a copier function, a printer function, and a facsimile function. A full-color or monochrome image is formed on a recording medium in accordance with the image information transmitted to the image forming apparatus 100.
The image forming apparatus 100 includes a toner image forming section 20, a transfer section 30, a fixing section 40, a recording medium feeding section 50, a discharging section 60, and a control unit section (not shown). The toner image forming section 20 includes photoreceptor drums 21b, 21c, 21m, and 21y, charging sections 22b, 22c, 22m, and 22y, an exposure unit 23, developing devices 200b, 200c, 200m, and 200y, cleaning units 25b, 25c, 25m, and 25y, and toner cartridges 300b, 300c, 300m, and 300y, and the toner supply pipes 250b, 250c, 250m, and 250y. The transfer section 30 includes an intermediate transfer belt 31, a driving roller 32, a driven roller 33, intermediate transfer rollers 34b, 34c, 34m, and 34y, a transfer belt cleaning unit 35, and a transfer roller 36.