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Developer capacity detecting unit for imaging device and imaging device

A capacity detection and imaging device technology, which is applied in the direction of electric recording process applying charge pattern, equipment for applying electric charge pattern, electric recording technique, etc. Use and other issues to achieve the effect of reducing waste and avoiding insufficient capacity

Active Publication Date: 2012-07-25
APEX MICROELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In summary, the printer actually sets a threshold for the size and fluctuation range of the coupling capacitance between the developing roller and the powder feeding roller. Only when the value of the coupling capacitance is greater than the threshold and the fluctuation range is smaller than the threshold, the printer considers The toner cartridge is normal and working normally, otherwise, it will consider that the toner cartridge is abnormal and stop working so that the toner cartridge cannot be used
However, in actual use, including when a new toner cartridge is installed in the printer or when the printer is printing normally, there is often enough toner in the toner cartridge, but due to various abnormal reasons, the coupling capacitance will be less than the threshold or its fluctuation If the range is greater than the threshold, the printer will report an error and the toner cartridge cannot be used, which causes waste of the toner cartridge

Method used

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  • Developer capacity detecting unit for imaging device and imaging device
  • Developer capacity detecting unit for imaging device and imaging device
  • Developer capacity detecting unit for imaging device and imaging device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Please refer to Figure 4 , the present embodiment provides a developer capacity detection unit for an image forming device, the image forming device includes: a developing container having an opening and accommodating developer, a developing member positioned at the opening of the developing container for carrying the developer, and a developing member positioned at the opening of the developing container A supplying part inside the developing container and used for supplying developer; the developer capacity detection unit includes: a developing part 1 for carrying developer, a detecting part 2 for supplying developer and / or detecting the amount of developer, and developing part 1 A connected detector 29 and an electrical signal source 30 connected to the detection unit 2, the electrical signal source 30 is used to apply a bias voltage to the detection unit 2, and the detector 29 is used to detect the electrical signal on the development unit 1, wherein the development...

Embodiment 2

[0028] Please refer to Figure 6 , In this embodiment, the developing component and the detecting component can be directly connected with the wire 40 to realize electrical connection. Specifically, the two ends of the detection point where the detection unit detects the coupling capacitance value between the developing roller and the powder feeding roller are connected with a wire 40, that is, the developing roller and the powder feeding roller are short-circuited. Optionally, a switch 5 may also be connected in series in the branch of the wire 40 .

[0029]Because the printer does not directly detect the coupling capacitance between the developing roller and the powder feeding roller, but judges the toner capacity by detecting the magnitude of the coupled AC signal. After the two ends of the detection unit are short-circuited, the AC signal is directly transmitted through the wire 40 at both ends of the detection point, with almost no loss, and the amplitude of the AC signa...

Embodiment 3

[0031] Please refer to Figure 7 , In this embodiment, the developing component and the detecting component can be electrically connected by connecting a capacitor 41 in parallel. Specifically, a capacitor 41 is connected in parallel at both ends of the detection point where the detection unit detects the coupling capacitance value between the developing roller and the powder feeding roller, and the capacitor 41 is connected in parallel with the coupling capacitance. The capacitance value of the capacitor 41 can be different according to different printers, for example, it can be 30PF-50PF, and the capacitance value only needs to be greater than the threshold requirement of the printer for the coupling capacitance between the developing roller and the powder feeding roller. Optionally, the electrical connection branch in this embodiment may also include a switch 5 connected in series with the capacitor 41 .

[0032] In this way, during use, since the capacitor 41 connected in...

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Abstract

The invention discloses a developer capacity detecting unit for an imaging device. The developer capacity detecting unit comprises a developing component, a detecting component, a detector and an electric signal source, wherein the electric signal source is used for applying bias voltage to the detecting component; the detector is used for detecting an electric signal on the developing component;and the detecting component is electrically connected with the developing component. By adopting the technical scheme of the invention, the detector can always detect a qualified alternating electricsignal, the phenomenon that the imaging device determines that the capacity of a developer such as a toner is insufficient when detecting a relatively small alternating electric signal is prevented, the imaging device can normally print and the waste of a toner cartridge is reduced.

Description

technical field [0001] The invention relates to the field of imaging technology, in particular to a developer capacity detection unit for an imaging device and an imaging device. Background technique [0002] The publication specification of the Chinese invention patent application with the application number "200810131782.7" discloses a developing device, such as figure 1 As shown, the developing device includes: a developing container 3 having an opening for storing developer, a developing member 1 located at the opening of the developing container for carrying developer, and a supply member 2 located in the developing container for supplying developer, And specifically discloses a detection unit for detecting the developer capacity. Such as figure 2 As shown, the detection unit includes the above-mentioned developing unit 1 and the supply unit 2. In the detection unit, the supply unit 2 is used as the detection unit 2 for detecting the developer capacity. The detection...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/08G03G15/00
CPCG03G15/556G03G15/0825G03G15/55G03G15/0831G03G15/0851G03G15/0856G03G15/086
Inventor 刘卫臣
Owner APEX MICROELECTRONICS CO LTD