JPH0328449Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a developer discharging device in a cleaner device for cleaning in a dry type copying machine.

In a dry copying machine, as shown in FIG. 1, an electrostatic latent image is formed on the surface of an image bearing surface 1 such as a photoconductive photoreceptor or a dielectric material by an electrostatic latent image forming device F. Then, a visible image made of toner is formed by a developing device D using a powder developer (hereinafter referred to as toner), and is transferred to a transfer paper fed from a paper feeder _T1 by a transfer electrode _T2 . Subsequently, the transfer paper is peeled off from the image carrier 1 by a peeling electrode _T3 and conveyed to a conveying device _T4 , where the visible toner image is fixed in a fixing section and a recording sheet is obtained.

On the other hand, toner remains on the surface of the image carrier surface 1 from which the transfer paper has been peeled off by the peeling electrode _T3 .
The remaining toner is removed by a cleaner device C, and the surface of the image carrier 1 is renewed without staining and is again used for forming an electrostatic latent image.

In a conventional cleaner device using the blade cleaning method of the cleaner device C described above, the configuration shown in FIG. 2 is generally used for discharging and storing the toner removed from the image bearing member 1.

Various proposals have been made regarding the form and function of the blade for removing residual toner. FIG. 2 shows a cleaner device using an example thereof.

In the illustrated blade, the blade 2 is fixed to a base body 21 of the blade by a fixing member 22, and one end of the base body 21 is rotatably fixed to a blade support shaft 23 fixed to the casing _C1 . has been
A weight 24 is fixed to the other end to generate a pressing force of the blade 2 against the image carrier 1, which is effective in scraping off the adhered toner.

The toner scraped off by the blade 2 is guided by a guide member 3, discharged by a discharge member 4, and stored in a storage container 5.

That is, the toner scraped off by the blade 2 is generally removed by using a flexible synthetic resin thin plate or the like.
It is scooped up by the toner guide member 31 which is fixed with its tip close to or in weak contact with the surface of the image carrier 1, and further slides down, and is smoothly adhered to the toner guide member 31 and fixed in a downward slope toward the storage container 5. Moving on to the second toner guide member 32 , some of the toner continues to slide down and fall into the storage container 5 , and some of the toner is deposited on the guide surface of the second toner guide member 32 . The accumulated toner is pushed down into the storage container 5 by the rotation of a toner discharge plate 42 which is fixed to a rotating shaft 41 of the discharge member 4 and can be bent to some extent. Further, the toner adhering to the toner discharge plate 42 is removed by the end side of the toner scraping plate 43, which is made of an elastic thin plate with one end fixed, coming into contact with the rotating toner discharge plate 42 and sliding on the surface while being slightly bent. The toner discharge plate 42 is kept quiet and clean.

The toner T stored in the storage container 5 in the above-described process is stored in the storage container 5 at each storage limit of the storage container 5.
is pulled out from the storage container receiver C2 and discarded or recovered from the storage container 5, and the storage container 5 is returned to the storage container receiver C2.
inserted into.

With the conventional shapes of the guide member, discharge member, and storage container of the cleaner device as described above, toner, which is light, easily flows, and easily scatters, accumulates as discharge residue on the downwardly sloping guide surface of the guide member. Ori,
A certain amount of toner accumulates in the storage container, and each time it is taken out, the toner flows down and scatters inside the copier, staining the inside of the copier and further staining the operator's hands and clothes, which should be clean.
This has become a place for operators to avoid in offices where cleanliness is a priority. Further, the downward slope of the guide surface of the guide member reduces the toner storage limit of the storage container, which has a limited bottom position, and increases the chances of natural removal of the storage container, which inevitably increases the frequency of staining.

This idea was created in view of the above-mentioned situation.
SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a blade cleaning type cleaner device that does not generate residual toner on the guide surface of a guide member, does not cause residual toner to flow down and scatter, and reduces the number of toner disposal (or collection) operations. be.

The purpose of the present invention is to remove the powder developer remaining on the image carrier surface by a cleaning device after a visible image formed by a powder developer formed on the image carrier surface is transferred to transfer paper. In a cleaning device equipped with a device for discharging the removed powder developer into a storage container, a guide formed to protrude upward into the storage container guides the removed powder developer to the storage container. a discharge member that rubs a part of the guide surface of the guide member to discharge the powder developer from the tip of the guide member into the storage container;
It is characterized by having a scraping member for scraping off powder developer adhering to the discharge member at the discharging tip portion, and also having a storage container holder that is pivotally supported below the guide member and tilts and rotates outward. This is accomplished by a cleaning device with a powder developer guide surface in a copying machine.

Next, the present invention will be specifically explained using examples.

FIG. 3 shows a blade cleaner device equipped with an embodiment of the present invention. Although the description of the reference numerals already mentioned in this figure will be omitted, the toner guide member 31a that guides the toner is the same as the toner guide member 31 described above. The second toner guide member 32a, which is adhered to the toner guide member 31a so that the surface thereof is smooth, is aligned with the rotational circumference of the tip of the toner discharge plate 42a, with a slight flat part following the toner guide member 31a. Since the guide surface 32b, which is formed as a cylindrical surface and has an arcuate surface, protrudes into the toner storage container 5, the tip 321a necessarily faces upward. Therefore, the toner scraped off by the blade 2 is transferred to the toner guide member 32 having the arcuate surface.
The accumulated toner is deposited on the bottom of the second toner guide member 32 when the discharge plate 42a
By sliding and rotating b, the toner that is pushed down into the container 5 from the edge 321a of the guide surface 32b that protrudes into the storage container 5 and adhered to the discharge plate 42a is removed completely. Toner scraping plate 43
Therefore, there is very little residual toner near the edge 321a of the guide surface 32b, and since the edge 321a of the guide surface 32b is oriented upward, the toner will not fall off due to vibrations, shocks, etc. There's nothing wrong with that.

Further, the edge 321a can be projected higher by Δh than in the case of the fixed toner guide member 32 with a downward slope, and the storage container receiver C2 can be rotated and tilted outward on the rotation axis 51a. The toner can be gathered to the outside of the storage container 5, and the amount of toner stored in the storage container 5 can be increased. Moreover, since the edge 321a faces upward, there is no problem when providing a means for rotating and tilting the storage container 5 about the rotation shaft 51a and pulling out the container 5 from the storage container C2.

Next, FIG. 4 shows a cleaner device equipped with another embodiment of the present invention.

In the illustrated embodiment, the edge 321b of the toner guide 32b of the guide member 3b is replaced by the edge 3 of the previously described embodiment.
21a, the amount of toner stored in the storage container 5 is increased by protruding deeper and higher into the storage container 5, and the frequency of handling the storage container 5 for toner disposal or recovery is reduced. The ejection member 4b is in the form of an endless belt in order to match the form of the guide member 3b described above.

The guide surface of the second toner guide member 322, which starts from a slightly flat surface and is smoothly adhered to the toner guide member 31b fixed to the image carrier 1 with its tip slightly separated or weakly pressed, is formed by the guide surface of the roller 44b of the discharge member 4b. Continuing to a cylindrical surface aligned with the rotational circumference, the cylindrical surface becomes flat again from the vicinity of the storage container 5,
The edge 321b is located approximately at the center of the storage container 5.

The discharge member 4b includes a roller 44b driven by a rotating shaft 41b, a rod 411b rotatably fitted to the rotating shaft 41b, a driven roller 45b provided at the tip of the rod 411b, and a roller 44b and a roller 45b. The ejection claw 461b stretched between the belts 46b attached at regular intervals, and the ejection claw 461
b and a toner scraping plate 43b of a belt 46b, the discharge member 4b is lightly biased by a biasing spring 47b provided between the rod 411b and the second toner guide member 322, and the belt 46b is a toner scraping plate 43b of a belt 46b. It is lightly pressed against the guide surface of 322. Further, the functions and effects of the toner scraping plate 43b and the storage container receiver C2 are the same as described above.

Since the embodiment illustrated in FIG. 4 has the above-mentioned configuration, there is no chance of toner accumulating and scattering, and since there is a large amount of toner stored in the storage container 5, there is no chance of soiling the inside of the machine or the operator's hands or clothes. It will decrease significantly.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the operation of a copying machine, Fig. 2 is a conventional blade cleaning type cleaner device, and Fig. 3 is an explanatory diagram of the operation of a copying machine.
4 and 4 are side views of a cleaner device equipped with an embodiment of the present invention. C...Cleaner device, 2...Blade, 31
a, 31b, 32, 32a and 322...toner guide member, 4, 4a and 4b...discharge member, 4
1, 41a and 41b...Rotating shaft, 42, 42a
...Discharge plate, 46b...Discharge belt, 43, 43
a and 43b... Toner scraping plate, 5... Storage container.

Claims (1)

[Scope of utility model registration request] After the visible image formed by the powder developer formed on the surface of the image carrier is transferred to transfer paper, the powder developer remaining on the surface of the image carrier is removed from the surface of the image carrier by a cleaning device. The cleaning device includes a device for discharging the removed powder developer into a storage container, and a guide member protruding upward into the storage container for guiding the removed powder developer to the storage container; A discharge member that rubs a part of the guide surface to discharge the powder developer from the tip of the guide member into the storage container, and a scraping member that scrapes off the powder developer adhering to the discharge member with the discharge tip portion. 1. A cleaner device having a guide surface for powder developer in a copying machine, further comprising a storage container receiver that is pivotally supported below the guide portion and tilts and rotates outward.