JPH08300170A - Method for working and refurbishing toner feeding pipe in copying machine and the like - Google Patents

Abstract

PURPOSE: To simply, efficiently and hygienically work a toner feeding pipe used in a copying machine and the like. CONSTITUTION: A laser beam irradiator 10 is arranged through a travelling body 11 movable along a rail 8, against the main pipe 1 of a toner feeding pipe; and, with the surface of the main pipe 1 irradiated by the laser beam as the pipe 1 is rotated, a fine rugged matte surface is formed. The matte surface is coated with a black paint so that a toner feeding pipe is manufactured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface processing method and a recycling processing method for a toner feeding pipe used in a copying machine or the like.

[0002]

2. Description of the Related Art In copying machines, printers and the like, the toner filled in a toner box is supplied to a printing portion by a toner feeding roller. The toner feeding roller is formed by coating a black paint on the outer surface of an aluminum thin-walled tube.

In order to manufacture the above-mentioned toner feed roller, conventionally, an aluminum blank tube formed by drawing is used as a gloss tube whose outer surface is cut and finished by cutting and the like, and the outer surface is subjected to shot blasting to obtain a satin finish (embossing). )
After the surface is washed, it is painted black.

Further, the toner feeding roller needs to be replaced with a new one for each predetermined usage amount, but since this roller is a gloss tube made by cutting and finishing an aluminum element tube, it is considerably expensive. The used toner feeding roller is regenerated and used.
In the method of recycling, first, the black coating is peeled off with a blade and washed, and then shot blasting and cleaning are performed again, and the black coating is applied again.

[0005]

As described above, in the conventional manufacture of the toner feeding pipe, the pear-skin surface to which the black coating is applied is formed by the shot blasting process, so that the processing environment is poor and the quality is low. Not only has a poor yield, but also requires a cleaning process to remove sand, glass, etc. adhering by shot blasting, and the generated dust and cleaning effluent must be treated as industrial waste. Have problems such as.

In the toner feed pipe recycling process, the black paint is scraped off by a blade,
Not only does this work require skill and a lot of labor, but since the pipe becomes thin each time it is scraped off, it can be regenerated only a few times, and scraped paint and its cleaning drainage are also industrial. There are problems such as the need to treat it as waste.

According to the present invention, the black coating is peeled off by the satin finish by the above shot blasting or the cutting tool.
This was done to solve the problem of processing the toner feeding pipe.The laser irradiation method is used to form the satin finish of the toner feeding pipe and to remove the black paint, and the processing is easy and highly efficient and accurate. The present invention intends to provide a novel processing method which can greatly reduce the cost and does not generate dust in the satin processing and does not require drainage processing.

[0008]

The structure of the present invention for achieving the above object will be described with reference to the drawings corresponding to the embodiments. A laser beam irradiator 10 is disposed so as to face the aluminum main body tube 1 to be used, and the laser beam irradiator 10 is moved from one end side to the other end side of the main body tube 1 while rotating the main body tube. The surface of the main body tube 1 is irradiated with laser light to form a matte surface 2, and the matte surface 2 is coated with a black coating 3.

Further, in the processing method of claim 2, a laser beam irradiator 10 is arranged so as to face the toner feeding pipe 4 having a black coating 3 on its surface, and the pipe 4 is rotated. Meanwhile, the laser beam irradiator is moved in the length direction of the pipe 4 to irradiate the surface of the pipe 4 with laser light to peel off the black coating 3 and
The satin-finished surface 2 is formed on the surface of and the black paint 3 is applied to the satin-finished surface 2 again.

[0010]

The present invention is configured as described above, and when forming the matte surface 2 on the main body tube 1, the main body tube 1 is rotated by the drive of the rotary shaft 2 and the laser beam irradiator is used.
As the traveling body 11 advances, the laser beam is emitted to the surface of the main body tube 1 while moving the main body tube 1 from one end side to the other end side. As a result, the satin-finished surface 2 in which the minute conical recesses are densely formed in a continuous state is exposed on the surface of the main body tube 1.

When the toner feeding pipe 4 coated with black is reclaimed, the black coated surface 3 is
By irradiating the laser beam in the same manner as described above, the black coating 3 is peeled off, and a new uneven surface is formed on the surface of the main body tube 1 after peeling. At this time, the outer diameter of the main body tube does not change due to the non-contact processing.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram of a processing sequence of a toner feeding pipe according to the present invention, FIG. 2 is an explanatory diagram of a recycling processing sequence of a toner feeding pipe according to the present invention, and FIG. FIG. 4 shows the other embodiment.

First, an embodiment of processing a toner feeding pipe will be described. In this processing method, as shown in FIG. 1, an aluminum pipe (blank pipe) to be processed is used as a main body tube 1, and a surface other than both ends thereof is irradiated with a laser beam to form a satin-finished surface 2, and then, A black coating 3 is applied on the matte surface 2 to form a toner feeding pipe 4. The main body tube 1 is formed of a thin drawn tube made of aluminum and has a predetermined diameter and length, and is generally called a raw tube.
A satin finish is applied to the main body tube 1.

In the satin finish processing, as shown in FIG. 3, the main body tube 1 is attached to a rotating device which holds and rotates the main body tube 1. The rotating device is provided with a pair of rotary shafts 5 and 6 facing each other on the axis, one rotary shaft 5 being a drive shaft, the other rotary shaft 6 being a receiving shaft, as shown by arrows. It is movable in the axial direction. A chuck device 7 that is inserted into an end portion of the main body tube 1 and holds the main body tube 1 is provided on the rotary shafts 5 and 6. Then, as shown in the figure, the main body tube 1 is gripped by the chuck devices 7, 7 having both ends thereof inserted, and is rotated by driving the rotary shaft 5.

A rail 8 is installed above the main body tube 1 attached to the rotating shafts 5 and 6. The rail 8 is connected to a laser oscillator (not shown) by an optical fiber 9 or an irradiation lens. Laser beam irradiator 10
Is mounted so as to face the main body tube 1 via the traveling body 11, and is reciprocally moved as shown by an arrow by a power unit (not shown).

For the satin finish of the main body tube 1, the main body tube 1 is
While rotating at a rate of 300 to 4,000 rpm, move the laser beam irradiator 10 at a speed of 2 to 4 mm per second,
It is performed by laser processing in which the main body tube 1 is irradiated with laser light over the entire length of the main tube 1 excluding both ends. In this case, the output of the laser light needs to be such that minute irregularities are formed on the surface of the main body tube 1. This laser light irradiation may be performed only in the forward movement, or may be performed in both the forward movement and the backward movement. The uneven surface area of the matte surface as a result of laser light irradiation is suitably in the range of φ0.3 to φ1.0 mm. By this laser processing, the surface of the main body tube 1 becomes a satin-finished surface 2 in which fine irregularities are uniformly formed in a continuous state over the entire surface.

After the finish of the satin finish, the main body tube 1 is removed from the rotating device, and a black coating 3 is applied onto the satin finish 2 by a conventionally known method to form a toner feeding pipe 4.

Next, an embodiment of reprocessing of the toner feeding pipe will be described. The toner feeding pipe is reprocessed due to deterioration of the black coating portion due to use. As shown in FIG. 2, this remanufacturing process uses a toner feeding pipe 4 that needs to be refurbished, and a black coating portion 3 applied to the remanufacturing pipe 4 is peeled off by irradiating with a laser beam. To form. Then, a black coating 3 is newly applied to this matte surface to form a regenerated toner feeding pipe 4.

The peeling of the black coating 3 and the formation of the new satin surface 2 are carried out by irradiating laser light in the same manner as in the previous embodiment. In this case, the black coating 3 is peeled off by directly moving the laser beam irradiator 10 once to irradiate the laser beam (primary irradiation). Then, the peeled surface portion is further irradiated with laser light (secondary irradiation), whereby a satin surface 2 is newly formed.

Since the formation of the satin finish by the irradiation of the laser beam causes the surface of the main body tube 1 to be deformed into irregularities, in the above-mentioned secondary irradiation, the irregular surface of the satin finish previously formed is different from the irregularities. Is newly formed. Therefore, satin finish can be formed without reducing the diameter of the main body tube 1. By re-applying a black coating 3 on the newly formed matte surface 2 by a conventionally known method, a regenerated toner feeding pipe 4 can be obtained.

Although the above embodiment is performed by using a single laser beam irradiator 10, in the present invention, laser processing can be performed by using a plurality of laser beam irradiators. FIG. 4 shows an example in which the traveling body 11 is provided with two laser beam irradiators 10a and 10b. The number of laser beam irradiators to be used and their arrangement can be appropriately changed in addition to the above.

As described above, when a plurality of laser beam irradiators 10a and 10b are used, the irradiation efficiency of the laser beam is several times higher, so that the moving speed of the laser beam irradiator can be increased by that much, and high efficiency can be achieved. It will be possible to process. Further, in this case, the irradiation of the laser light is sufficient only when moving to one side. The plurality of laser beam irradiators 10a and 10b may have the same performance, or the tip areas of the laser beams may be sequentially changed from large to small, and the rough machining to the finishing machining may be continued. It can also be made possible.

An example of an experiment conducted on the processing by the laser light irradiation will be shown below. In addition, Experimental Example 1 is processing only for forming a satin finish, and Experimental Example 2 is processing for peeling black coating and forming satin finish.

(Experimental Example 1) (Experimental Example 2) Body tube outer diameter 16 mm x length 220 mm Outer diameter 16 mm x length 220 mm Laser output (current) 32A 28A QswKHz 4KHz 5KHz Body tube rotation speed 3800rpm 4000rpm laser- Beam irradiation speed 3.5 / sec 4.0 / sec Processing time 62sec 55sec Focus setting Just focus Just focus Surface roughness RQ 3.0 μm RQ 2.8 μm

An inspection was carried out by applying a black coating to the matte surface 2 of the main body tube 1 processed according to the above-mentioned Experimental Example 1, and it was confirmed that the coating was uniform and the adhesion was good, and that it could be put to practical use. In Experimental Example 2, the black paint was first peeled off, and then the matte surface was formed. The black paint peeled off was also good, and the matte surface formation was good after that. The result of inspecting No. 2 by newly applying black coating was also good as in Experimental Example 1.

[0026]

As described above, according to the processing method of the toner feeding pipe of the present invention, the laser beam irradiator is moved while rotating the main body tube, and the surface of the main body tube is irradiated with the laser beam. Since it is made to go, it becomes possible to easily, accurately, and efficiently form the satin-finished surface 2 in which minute irregularities are densely arranged. Further, since the unevenness is formed by irradiating the laser beam, the generation of dust as in the conventional shot blasting and the treatment thereof and the treatment of the cleaning waste liquid do not adversely affect the environment, and the cost can be reduced.

Further, according to the toner feed pipe recycling processing method of the present invention, the black-painted portion is peeled off by the irradiation of the laser beam, and then a new satin surface is formed on the peeled surface. It is possible to eliminate many complicated and unsanitary processes such as conventional black paint removal with a blade, subsequent cleaning and satin formation by shot blasting, and subsequent cleaning waste liquid treatment, and it is possible to greatly reduce costs. become. Moreover, since the unevenness is formed by the irradiation of the laser beam, the diameter of the main body tube does not become thin no matter how many times the reproduction processing is performed, and thus the main body tube once manufactured can be reused (recycled) for a long time. Also in terms of cost, it is reduced.

[Brief description of drawings]

FIG. 1 is an explanatory view of a processing sequence according to an embodiment of the present invention.

FIG. 2 is a drawing explaining the processing sequence of the other embodiment.

FIG. 3 is a front view showing a mode of an embodiment of the laser light irradiation.

FIG. 4 is a front view showing an aspect of another embodiment.

[Explanation of symbols]

 1 main body tube 2 satin ground 3 black paint 4 toner feed pipe 5, 6 rotating shaft 7 chuck device 8 rail 9 optical fiber 10, 10a, 10b laser beam irradiator 11 running body

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[Procedure amendment]

[Submission date] June 6, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0024

[Correction method] Change

[Correction content]

[0024]

Claims (2)

[Claims] 1. A laser beam irradiator is disposed so as to face a main body tube made of aluminum used for a toner feeding pipe, and the main body tube is rotated while the laser beam irradiator is provided from one end side of the main body tube. A method for processing a toner feeding pipe in a copying machine or the like, characterized in that the surface of the main pipe is moved to the other end side to form a satin finish, and the satin finish is painted black. . 2. A laser beam irradiator is provided so as to face a toner feeding pipe whose surface is painted black.
While rotating the pipe, move the laser beam irradiator in the length direction of the pipe to irradiate the surface of the pipe with laser light to remove the black coating and form a satin surface on the surface of the pipe. Then, a method for remanufacturing a toner feeding pipe in a copying machine or the like is characterized in that the matte surface is painted black again.