Toner supplying method, toner supplying device, developing device, and image forming apparatus with controlled toner supply
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United States of America Patent
Stats
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Feb 23, 2010
Grant Date -
Sep 20, 2007
app pub date -
Feb 1, 2007
filing date -
Mar 20, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A toner supplying device includes: a toner density sensor for detecting a density of toner contained in a developer tank; a toner hopper for supplying toner to the developer tank; a toner cartridge for supplying toner to the toner hopper; and a control section, when a request to supply toner to the developer tank is made in accordance with a signal detected by the toner density sensor, for controlling a hopper driving motor and a cartridge driving motor so that (i) the toner hopper supplies toner to the developer tank and (ii) the toner cartridge supplies toner to the toner hopper. Thus, in a structure having first and second toner supplying sections disposed on top of each other, toner can be stably supplied to a developer tank.
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