Preheating method for developing unit and imaging device using same
A developing unit and image technology, applied to the equipment of the electric recording process using the charge pattern, the electric recording process using the charge pattern, the instrument, etc., can solve the problems of false detection, insufficient developer amount, poor developer fluidity, etc. , to achieve the effect of ensuring normal use and reducing the probability of false detection
Inactive Publication Date: 2011-09-21
RICOH KK
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Problems solved by technology
[0004] When the developing unit is used for the first time, during the storage and transportation of the developing unit, due to the poor fluidity of the developer, a large amount of developer accumulates in a certain place in the hopper of the developing unit, which makes the stirring of the developer uneven, thus Insufficient amount of developer supplied to the developer detection area
Therefore, an area with a small amount of developer temporarily appears in the developer detection area, so that false detection without developer occurs, such as image 3 shown
[0005] However, the usual developer preheating method does not distinguish whether the developing unit is used for the first time. As a result, for the developer used for the first time, it may be judged that it has no developer when there is still a lot of developer in it. A working developer unit is not working
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[0020] The present invention will be further described in conjunction with the accompanying drawings and embodiments.
[0021] In an image forming device, a photosensitive drum, a developing roller, and toner are integrated into one body, which is called a developing unit. A photoelectric sensor for detecting the presence or absence of developer and an ID chip for recording the state of the unit are installed in the developing unit. There is a storage area for a new product mark indicating whether it is in an unused state or a used state in the ID chip. The new mark is set when the developing unit is shipped from the factory to indicate that it is used for the first time. There are many structures for realizing the ID chip, as long as it is a chip that can record the state of the developing unit.
[0022] Figure 4 is a flow chart of the warm-up method of the developing unit of the present invention. Such as Figure 4 As shown, when the power is turned from OFF to ON with ...
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The invention provides a preheating method for a developing unit. The developing unit is arranged in an imaging device. The method comprises the following steps: 1) judging if the developing unit is a new product, when an off-state power supply is switched on in the state of closed cover of the imaging device or when the opening cover of the imaging device is closed in the on-state of the power supply; 2) if the developing unit is a new product, preheating the developing unit according to a new product mode and performing the step 3), and if the developing unit is not a new product, preheating the developing unit according to the common product mode; and 3) in the preheating process according to the new product mode, detecting if a developing agent exists, and if so, setting the developing unit as the common product, and if not, prompting a user to uniformly shake the developing unit.
Description
technical field [0001] The invention relates to a method for preheating a developing unit and an image forming device using the method. Background technique [0002] In the existing detection method of developer, it is to detect whether there is developer by mechanical means, such as figure 1 , figure 2 shown. A detection part is provided in the image forming device, and the detection part is in contact with the developing unit, and the movement of the arm drives the detection part to rotate, and is detected by detecting the movement of the detection part by a light reflective sensor provided in the image forming device. Check to see if there is any developer in the developer unit. [0003] The developer is loaded into the hopper of the developer unit. While the agitator is rotating, the developer is replenished to the replenishment roller located in front of the developer detection area for printing images. The detection part is located in the center of the developer ...
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IPC IPC(8): G03G15/08G03G21/14
Inventor 费雪蔡俊林
Owner RICOH KK