JPS5837070Y2 - Copier wet developing device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a wet developing device for a copying machine.

In this type of wet developing device, if the developer deteriorates,
For example, in an electronic copying machine, toner particles adhere to each other and become coarse, turning into so-called sludge, which not only does not contribute to the development action, but also strongly adheres to tank walls and the like.

Therefore, in order to maintain good copy quality, it is necessary to replace the developer every certain number of copies or every certain period of time, and to remove the toner lumps that have turned into sludge and adhered to the toner.

In reality, such adhered toner lumps cannot be easily removed even by using a solvent, and are scraped off with a screwdriver, etc., but this takes a long time and is difficult to remove on hands, clothes, indoors, etc. This results in staining with the developer.

A cleaning device that uses ultrasonic waves is also used to remove the toner lumps mentioned above, but this device is extremely large and expensive, and cannot be carried around. You will need to take the tank home with you to clean it.

The present invention aims to eliminate the above-mentioned drawbacks in conventional wet developing devices.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, the developing device according to the present invention is equipped with a double tank structure including an outer tank 1 and an inner tank 2.

The outer tank 1 is made of a material with sufficient thickness and material for practical use.
For example, the inner tank 2 is made of nylon with a wall thickness of 2.5 mm, and the inner tank 2 is made of a thin material that can be manufactured at low cost, such as a wall thickness Q of 3 mm.
Made of polypropylene.

The inner tank 2 has a shape that almost matches the inner shape of the outer tank 1, and when it is placed inside the outer tank 1, as shown in Fig. 2, the outer tank 1 is supported by the entire inner surface. The state will be as follows.

The inner tank 2 is thin enough to be foldable and portable, but thick enough to maintain its shape by itself, so it has the necessary strength when in use and is easy to store in the outer tank 1. It has excellent operability.

3 is a drain port of the outer tank 1.

As shown in FIG. 3, the inner tank 2 has a flange portion 2a that rests on the shoulder portion 1a of the outer tank 1, and the flange portion 2a is further provided with cutouts 4 at appropriate intervals. The inner tank 2 has this cutout 4 compared to the outer tank 1.
It can be fixed with the button.

When cleaning the developing tank, it is sufficient to unscrew the notch 4, take out the inner tank 2 from the outer tank 1, discard it, and install a new inner tank 2.

By doing so, cleaning can be done in a short time and hands will not get dirty, and good maintainability can be obtained.

As shown in FIG. 4, the inner tank 2 is provided with a protrusion 5 that indicates the drain port position corresponding to the drain port 3 of the outer tank 1, and the protrusion 5 is inserted with a screwdriver or the like or with scissors. Drainage can be made easier by cutting the tube.

Alternatively, as shown in FIG. 5, the drain port 3 of the outer tank 1
It is also possible to provide the drain port 6 from the beginning at the position of the inner tank 2 corresponding to the position of the inner tank 2.

In this case, after draining the residual developer in the inner tank 2,
Remove the inner tank from the outer tank.

In the embodiment shown in FIG. 6, a drain tube 7 is integrally formed in the inner tank 2, and is led out from the drain port 3 of the outer tank 1.

In this case, the liquid can be drained by cutting the tip of the drain tube 7, so either remove the inner tank when draining the liquid, or make a hole while it is still in the outer tank, and drain the outer tank. You can prevent the inconvenience of getting it wet.

In the embodiment shown in FIG. 7, ribs 8 are provided on the bottom surface of the outer tank 1.
This prevents toner from adhering to the bottom surface of the inner tank 2.

For the same purpose, the inner tank 2 as shown in FIG.
Ribs 9 can be provided on the bottom surface of the.

As described above, the wet type developing device according to the present invention has a developing tank that is easy to clean, does not stain hands, etc., and has good maintainability.

[Brief explanation of drawings]

FIG. 1 is an exploded view of the developing tank according to the present invention, FIG. 2 is an assembled sectional view thereof, FIG. 3 is a plan view of the inner tank, FIG. 4 is a front view showing another embodiment of the inner tank, and FIG. The figure is a sectional view showing yet another embodiment, FIG. 6 is a sectional view showing yet another embodiment of the inner tank, and FIG. 7 is still another embodiment of the present invention in which ribs are formed on the bottom surface of the outer tank. 8th cross-sectional view showing
The figure is a sectional view showing yet another embodiment in which ribs are formed on the bottom surface of the inner tank. 1...Outer tank, 2...Inner tank, 3...Outer tank drain port, 8, 9...
··rib.

Claims (3)

[Scope of utility model registration request] (1) A wet-type developing device for a copying machine, wherein the developing tank includes an outer tank having sufficient rigidity and a thin inner tank having approximately the same shape as the inner side of the outer tank. (2) The wet type developing device according to claim 1, wherein the inner tank position corresponding to the drain port of the outer tank is easily opened for draining the liquid. (3) Utility model registration claim 1, characterized in that ribs are formed on the bottom surface of the outer tank or the bottom surface of the inner tank.
The wet developing device according to item 1 or 2.