JPS6122380A - Cleaning device - Google Patents

Abstract

PURPOSE:To prevent the generation of a cleaning failure by executing both detection of a setting failure of a device for cleaning a visible image, and detection of fullness of a waste toner which has been brought to cleaning. CONSTITUTION:In a state that a cleaning device 2 has been set, light of a lamp 5 passes through a slit 7 and a waste toner collecting box 9 and it is irradiated on a CdS photodetector 8, therefore, a cleaner setting signal is inputted to a microprocessor 9, and when a copying signal is inputted, a copying start signal is outputted and copying becomes available. On the other hand, in a state that the cleaner 2 is not set, light of the lamp 5 on a lamp holder linked with the cleaner 2 cannot pass through the slit 7, and it is not irradiated on the CdS photodetector 8, therefore, the cleaner setting signal is not inputted to the microprocessor 9, and even if the copying signal is inputted, the copying start signal is not outputted, and copying cannot be executed.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention relates to the use of a photoreceptor in an image forming apparatus (for example, an electrophotographic copying device or a laser vinyl printer) having a photoreceptor for forming a visible image. The present invention relates to a cleaning device.

Hereinafter, a cleaning device for a copying machine will be explained as an example.

[Conventional technology and problems]

Conventionally, this type of device requires a cleaning member to be pressed against the photoreceptor for cleaning, so in order to attach the cleaning device to the copying machine, a state force (necessary) is required to move from the released state to the set state. If the transfer operation is not performed or is performed incompletely, there is a drawback that cleaning failure occurs and furthermore, the photoreceptor is damaged.

[Object and effect of the invention]

The present invention makes it possible to prevent cleaning failures by stopping the machine when a reach setting failure occurs as in the conventional example described above, by detecting that the case that collects waste toner from the cleaner is full. It is also now possible to display a warning if the cleaner is incorrectly set. Additionally, since signals are shared, it is also possible to reduce the number of microprocessor ports used.

〔Example〕

(I) FIG. 1 shows an embodiment of the present invention, where l is a photosensitive drum;
2 is a cleaning device (
3 is a cleaning member that directly cleans the photosensitive drum in the cleaner; 4 is a link connecting the cleaner and the lamp holder; 5 is a lamp that illuminates the CDS to confirm whether the cleaner is set; 6 is a lamp holder for fixing the lamp, 7 is a slit for exposing the light from the lamp to the CDS, 8 is C
dS light receiving element, 9 is a waste toner collection box, IO is C
This is a microprocessor that uses a cleaner set signal and a copy signal from a dS light receiving element as input signals, and uses a copy start signal as an output signal.

(If) When the cleaner 2 is set, the light from the lamp 5 on the lamp holder linked to the cleaner 2 passes through the slit 7 and the waste toner collection box 9, and the CdS
Since it hits the light receiving element 8, a cleaner set signal is inputted to the microprocessor 9, and when a copy signal is inputted, a copy start signal is outputted to enable copying.

On the other hand, when the cleaner 2 is not set, the light from the lamp 5 on the lamp holder linked to the cleaner 2 cannot pass through the slit 7 and does not hit the CdS light receiving element 8, so a cleaner set signal is input to the microprocessor 9. Therefore, even if a copy signal is input, a copy start signal is not output, making copying impossible.

If cleaner 2 is released in Figure 1, lamp 5
light does not hit the CdS light receiving element 8 and the cleaner set signal is not input to the microprocessor 10. At this time, the microprocessor IO stores the cleaner set signal OFF, the cleaner 2 is set, and the cleaner set signal is turned ON. When the copy signal is input, the photosensitive drum l is
Do not apply static electricity to the This is to prevent toner from getting around to the back side of the cleaning member 3 when the cleaner 2 is set and causing damage to the photosensitive drum 1 due to charging due to poor cleaning.

According to the embodiment described above, the following effects can be obtained.

■Since the copying operation cannot be started unless the cleaner is set, it is effective in preventing scattering due to poor cleaning.

■It has the effect of preventing damage to the photoreceptor.

Two types of detection can be performed with one sensor, and the number of input signals to the microprocessor can be reduced.

According to another embodiment, even if toner gets around to the back side of the cleaning member 2 and causes cleaning failure, there is an effect that no damage is caused to the photosensitive drum.

〔Effect of the invention〕

As described above, according to the present invention, not only can cleaning failures be prevented, but also damage to the photoreceptor can be prevented.

[Brief explanation of the drawing]

'FIG. 1 is a side view showing one embodiment of the present invention, and FIG. 2 is an input/output diagram of a microprocessor. In the figure, 1-111 photosensitive drum 2----cleaner 3--1-
Cleaning member 4-111 link 5---Detection lamp 6---Lamp holder 7---Slit 8---c d s9-111 microprocessor 10---Waste toner Collection box.

Claims (1)

[Claims] In a cleaning device for an image forming apparatus having a photoreceptor that forms an image, it is possible to detect a setting failure of the device for cleaning a visible image and to detect that the cleaned waste toner is full with one detection means. A cleaning device with special features.