BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic cross-sectional configuration view illustrating an embodiment of an image forming apparatus according to the present invention.
FIG. 2 is a schematic cross-sectional configuration view illustrating an embodiment of a developing device to which the present invention is applicable.
FIG. 3 is a schematic cross-sectional configuration view illustrating an embodiment of a process cartridge to which the present invention is applicable.
FIG. 4 is a block diagram illustrating a developer remaining amount detecting circuit.
FIG. 5 is a graph illustrating a relationship between a remaining amount of toner and a detected value.
FIG. 6 is a block diagram of a main body controller.
FIG. 7 is a graph illustrating a relationship between a remaining amount of toner and a deviation of detected value.
FIG. 8A, FIG. 8B, FIG. 8C and FIG. 8D are schematic cross-sectional views illustrating a movement of toner and agitation within a developing device.
FIG. 9 is a graph illustrating a relationship between a remaining amount of toner and an average output value.
FIG. 10 is a graph illustrating a relationship between a remaining amount of toner and a band of fluctuation in detected value.
FIG. 11 is a graph illustrating a relationship between a remaining amount of toner, and an average output value and an output fluctuation value in a first embodiment of the present invention.
FIG. 12 is a graph illustrating a relationship between a remaining amount of toner, and an average output value, an output fluctuation value and an ideal value in the first embodiment of the present invention.
FIG. 13 is a graph illustrating a relationship between a remaining amount of toner, and an average output value, an output fluctuation value, and an ideal value in the first embodiment of the present invention.
FIG. 14 is a flow chart illustrating a toner remaining amount detecting control in the first embodiment of the present invention.
FIG. 15 is a graph illustrating a relationship between a remaining amount of toner, and an average output value, an output fluctuation value and an ideal value in the second embodiment of the present invention.
FIG. 16 is a flow chart illustrating a toner remaining amount detecting control in the second embodiment of the present invention.
FIG. 17 is a graph illustrating a relationship between a remaining amount of toner, and an average output value, an output fluctuation value and an ideal value in the third embodiment of the present invention.
FIG. 18 is a graph illustrating another example of a relationship between a remaining amount of toner and an ideal value in the third embodiment of the present invention.
FIG. 19 is a flow chart illustrating a toner remaining amount detecting control in the third embodiment of the present invention.
FIG. 20 is a graph illustrating a relationship between a remaining amount of toner, and an average output value, an output fluctuation value and a reference value in the fourth embodiment of the present invention.
FIG. 21 is a flow chart illustrating a toner remaining amount detecting control in the fourth embodiment of the present invention.
FIG. 22 is a schematic cross-sectional configuration view illustrating another embodiment of an image forming apparatus according to the present invention.
FIG. 23A and FIG. 23B are schematic cross-sectional configuration views illustrating another embodiment of a developing device to which the present invention is applicable.
FIG. 24 is a block diagram illustrating another embodiment of a developer remaining amount detecting circuit.
FIG. 25A is a graph illustrating a relationship between a remaining amount of toner and a capacitance value in a developer remaining amount detecting unit. FIG. 25B is a graph illustrating a relationship between a radius of a cross-section of developing sleeve and a difference A in capacitance.
FIG. 26A and FIG. 26B are graphs illustrating a relationship between a remaining amount of toner and a deviation of detected value.
FIG. 27A, FIG. 27B, FIG. 27C and FIG. 27D are schematic cross-sectional diagrams illustrating a movement of toner and agitation within a developing device.
FIG. 28 is a block diagram of a main body controller.