JP2003155581A - Method of manufacturing magnet roll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a stable recessed pattern in manufacturing a magnet roll. SOLUTION: The disciplined recessed pattern 1c is provided on the outer surface of a sleeve 1 by treating the whole of the cylindrical sleeve at a high temperature, depositing ink into the prescribed pattern on the outer surface of the sleeve 1 to form a mask pattern 2 and etching.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a magnet roll used in copying machines, printers, facsimiles and the like.

[0002]

2. Description of the Related Art A magnet roll has a sleeve provided rotatably and a magnet provided in the sleeve. Then, innumerable irregularities are formed on the outer surface of the sleeve, and the toner is conveyed by utilizing the innumerable irregularities.

[0003]

In recent years, the unevenness provided on the outer surface of the sleeve is required to be more precise.

That is, since the resolution is high in the copying machine, the unevenness provided on the outer surface of the sleeve also increases the surface area of the outer surface by making finer unevenness, thereby increasing the mass. The device is designed so that the above toner can be transported. However, the problem that has occurred here is that even if such unevenness is made minute, it is impossible to perform minute printing as a conclusion.

This is due to the following reasons. That is, in the above-mentioned conventional example, the unevenness is formed by sandblasting.However, in the case of forming fine unevenness on the outer surface of the sleeve by this sandblasting, the sandblasting time is lengthened, or the sandblasting process is performed. Ingenuity is made to increase the injection pressure.

However, when the sandblasting time is increased or the injection pressure is increased as described above, the sleeve itself is curved, and even if the outer surface of the sleeve has fine irregularities, the sleeve itself does not. When it was curved, it was sometimes impossible to make fine irregularities.

Therefore, it is conceivable to deposit the ink in a predetermined pattern on the outer surface of the sleeve and then form a regular concave pattern on the outer surface of the sleeve by etching.

In the case where the concave pattern is formed on the outer surface of the sleeve by etching as described above, the amount of the concave portions per body area is stable, so that precise printing can be performed.

However, also in this case, there are the following points to be improved.

That is, in order to form this regular concave pattern, ink must be adhered to the outer surface of the sleeve in a predetermined pattern. The resist adhered to the outer surface of the sleeve in a predetermined pattern and the outer surface of the sleeve. If the adhered portion of the surface is not firmly adhered, the etching solution will penetrate from that portion, and as a result, the regular concave pattern as originally planned cannot be formed.

If this happens, the amount of recesses per body area becomes unstable and it becomes impossible to perform precise printing.

Therefore, the present invention has an object to enable precise printing.

[0013]

In order to achieve the above object, the present invention has the following constitution.

According to a first aspect of the present invention, the entire cylindrical sleeve is subjected to a high temperature treatment, and then ink is adhered to the outer surface of the sleeve in a predetermined pattern, and then the outer surface of the sleeve is etched to form a regular pattern. A method of manufacturing a magnet roll for forming a certain concave pattern, wherein by subjecting the entire sleeve to a high temperature treatment, volatile components in the ink are removed, and the adhesion between the ink and the outer surface of the sleeve is increased. The assumed penetration of the etching solution is eliminated, and as a result, a regular concave pattern can be formed, which enables fine printing.

The invention according to claim 2 of the present invention is the method for producing a magnet roll according to claim 1, wherein the outer surface of the sleeve is sandblasted before the high temperature treatment of the entire cylindrical sleeve. By applying sand blasting, it becomes easier for ink to adhere to the outer surface of the sleeve, and by further heat treating the entire sleeve,
Volatile components in the ink are removed, the adhesion between the ink and the outer surface of the sleeve is enhanced, and the intrusion of the etching solution assumed as described above is eliminated, and as a result, a regular concave pattern can be formed. , This enables precise printing.

The invention according to claim 3 of the present invention is the method for manufacturing a magnet roll according to claim 1, wherein the entire sleeve is subjected to high temperature treatment by heating the cylindrical sleeve in a high temperature tank. By heating the temperature of the entire sleeve to a certain temperature in a high temperature tank and heating it, the volatile components in the ink are removed, and the adhesion between the ink and the outer surface of the sleeve is increased. The invasion of the etching solution is eliminated, and as a result, it is possible to form a regular concave pattern, which enables precise printing.

According to a fourth aspect of the present invention, the ink is adhered in a predetermined pattern on the outer surface of the cylindrical sleeve,
Next, a method of manufacturing a magnet roll, which comprises subjecting the entire sleeve to a high temperature treatment, and then forming a regular concave pattern on the outer surface of the sleeve by etching,
By subjecting the entire sleeve to high temperature treatment, the volatile components in the ink are removed, the adhesion between the ink and the outer surface of the sleeve is increased, and the intrusion of the etching solution assumed as described above is eliminated. Certain concave patterns can be formed, which allows for fine printing.

According to a fifth aspect of the present invention, before the ink is adhered to the outer surface of the cylindrical sleeve in a predetermined pattern, sandblasting is applied to the outer surface of the sleeve. In the manufacturing method, the sandblasting process makes it easier for the ink to adhere to the outer surface of the sleeve, and the high temperature treatment of the entire sleeve removes the volatile components in the ink.
The adhesion between the ink and the outer surface of the sleeve is enhanced, and the invasion of the etching solution assumed as described above is eliminated. As a result, a regular concave pattern can be formed, which enables precise printing. Like

The invention according to claim 6 of the present invention is the method for producing a magnet roll according to claim 4, wherein the entire sleeve is subjected to high temperature treatment by heating the cylindrical sleeve in a high temperature tank. By heating the temperature of the entire sleeve to a certain temperature in a high temperature tank and heating it, the volatile components in the ink are removed, and the adhesion between the ink and the outer surface of the sleeve is increased. The invasion of the etching solution is eliminated, and as a result, it is possible to form a regular concave pattern, which enables precise printing.

According to a seventh aspect of the present invention, the heater is placed in a cylindrical sleeve to heat the entire sleeve at a high temperature, and the ink is adhered to the outer surface of the sleeve in a predetermined pattern. A method for manufacturing a magnet roll in which a sleeve is subjected to an etching treatment, wherein ink is allowed to adhere to the outer surface of the sleeve while keeping the temperature of the entire sleeve at a constant high temperature by passing a heater inside the sleeve. By heating with a heater, the volatile components in the ink are removed, the adhesion between the ink and the outer surface of the sleeve is increased, and the penetration of the etching solution assumed above is eliminated, resulting in a regular concave pattern. Can be formed, which enables precise printing.

According to an eighth aspect of the present invention, before the ink is adhered to the outer surface of the cylindrical sleeve in a predetermined pattern, the outer surface of the sleeve is sandblasted to form a magnet roll. In the manufacturing method, the sandblasting process makes it easier for the ink to adhere to the outer surface of the sleeve, and the high temperature treatment of the entire sleeve removes the volatile components in the ink.
The adhesion between the ink and the outer surface of the sleeve is enhanced, and the invasion of the etching solution assumed as described above is eliminated. As a result, a regular concave pattern can be formed, which enables precise printing. Like

According to a ninth aspect of the present invention, while the ink is adhered to the outer surface of the cylindrical sleeve in a predetermined pattern, the outer surface of the sleeve is simultaneously subjected to high temperature treatment by a heat irradiator, and then the sleeve is etched. With the magnet roll manufacturing method, it is possible to efficiently perform the process of attaching ink to the sleeve and the process of heating at the same time, and the volatile components in the ink are removed by heating, and the ink and the outer surface of the sleeve adhere to each other. As a result, the invasion of the etching solution assumed as described above is eliminated, and as a result, a regular concave pattern can be formed, which enables precise printing.

According to a tenth aspect of the present invention, before the ink is adhered to the outer surface of the cylindrical sleeve in a predetermined pattern, the outer surface of the sleeve is sandblasted so that the outer surface of the sleeve is sandblasted. By applying sand blasting in the manufacturing method, the ink is likely to adhere to the outer surface of the sleeve, and by subjecting the entire sleeve to high temperature treatment, the volatile components in the ink escape and the ink between the ink and the outer surface of the sleeve is removed. Adhesion is enhanced, the invasion of the etching solution assumed as described above is eliminated, and as a result, a regular concave pattern can be formed,
This enables precise printing.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION (Embodiment 1) In the following, Embodiment 1 will be used to explain the invention particularly described in claims 1 to 3.

1 and 2, the cylindrical sleeve 1
Is made of aluminum or stainless steel.

In the longitudinal direction of the outer surface of this sleeve 1,
As shown in FIG. 1, a mask pattern 2 is formed.

In the above structure, when the mask pattern 2 is formed, the sleeve 1 is first put in the high temperature tank 5 in FIG. 2 and heated until the temperature of the outer surface of the sleeve 1 reaches about 200.degree.

Next, the sleeve 1 is taken out from the high temperature tank 5, and the outer surface is kept in a high temperature state, as shown in FIG.
1 are held by the holders 3 and 4 and rotated, and at the same time, while the ink is ejected from the ink applicator toward the outer surface of the sleeve 1, the ink applicator is moved in the longitudinal direction of the sleeve 1 as shown in FIG. Mask pattern 2 is formed.

After that, the sleeve 1 of FIG. 1 is dipped in an etching solution, and a portion of the ink on which the mask pattern 2 is not adhered is etched by the etching solution. As a result, a concave pattern is formed next to the mask pattern 2. .

FIG. 3 (A) compares the adhered state of the outer surface of the sleeve 1 and the mask pattern 2 of ink when the mask pattern 2 is formed by subjecting the sleeve 1 to high temperature treatment and when not subjected to high temperature treatment. FIG.

In FIG. 3, during etching, the etching liquid can be circulated in the direction of arrow a, for example.

When the high temperature treatment is not carried out as shown in (B), between the mask pattern 2 of the ink and the outer surface of the sleeve 1,
The etching solution enters from the a direction to form a side etching state in which a gap 1b is formed.

Further, the etching liquid that has entered the gap 1b pushes up the mask pattern 2 of the ink, and the peeling occurs.

In comparison with this, when the high temperature treatment as in (A) is performed, the volatile components in the ink evaporate when heated at a high temperature, and the ink is thermally cured, whereby the ink mask pattern 2 and the sleeve. The adhesiveness with the outer surface of No. 1 is enhanced, and the side etching assumed as described above is less likely to occur.

Therefore, the amount of the concave portion of the concave pattern 1c becomes stable, and it becomes possible to always carry an appropriate amount of toner.

The fact that side etching is less likely to occur also makes it possible to form deeper recesses.

(Second Embodiment) The second embodiment of the present invention will be described below.

FIG. 4 shows that the outer surface of the sleeve 1 is irradiated with sandblast.

In FIG. 4 (A), while the sleeve 1 is held by the holders 3 and 4, the holders 3 and 4 are rotated, and at the same time, abrasive grains are struck from the sandblast irradiator 6.
The sandblast irradiator 6 is moved in the longitudinal direction of the sleeve 1 while being ejected toward the outer surface of the sleeve 1.

As described above, the outer surface of the sleeve 1 is roughened as shown in FIG.

In this way, the sleeve 1 whose outer surface is roughened is subjected to a high temperature treatment as described with reference to FIG. 2, then an ink mask pattern 2 is attached in a predetermined pattern, and then etching is performed. The concave pattern 1c is formed.

As described above, by performing the sandblasting process before the high temperature treatment, the ink easily adheres to the outer surface of the sleeve 1.

(Embodiment 3) Hereinafter, the invention according to claims 4 to 6 of the present invention will be described with reference to a third embodiment.

FIG. 5 is an internal view of a high temperature tank 5 for treating the sleeve 1 at a high temperature in the third embodiment of the present invention.

Ink is applied to the outer surface of the sleeve 1 in a predetermined pattern by an ink applicator, and then about 100 to 1 is applied.
Approximately 3 pieces of the sleeve 1 is placed in the high temperature tank 5 kept at 50 ° C.
Mask pattern 2 by putting in 0 minutes and performing high temperature processing
Is formed, and then etching is performed to form a concave pattern.

Also by this, the same effect as the contents described in the first embodiment can be obtained.

Further, as compared with the case where the temperature of the sleeve 1 is raised in the high temperature tank 5 described in the first embodiment and ink is applied later, when the heat treatment is performed in the high temperature tank 5 of FIG. Since the temperature of the outer surface of the sleeve 1 gradually decreases when it is taken out of the tank 5, it is difficult to always perform heat treatment at a constant high temperature. However, as shown in FIG. In the case of processing, it becomes possible to reliably perform heat treatment at a constant high temperature.

Furthermore, when sandblasting is performed before the ink is adhered to the outer surface of the sleeve 1 in a predetermined pattern, the same effects as those described above can be obtained.

(Embodiment 4) Hereinafter, the invention according to claims 7 to 8 of the present invention will be described with reference to Embodiment 4.

FIG. 6 shows a fourth embodiment of the present invention, which is a heat treatment method in which a heater 7 is placed inside the sleeve 1.

In FIG. 6, a rod-shaped heater 7 is placed inside the cylindrical sleeve 1 so that the outer surface of the sleeve is about 20.
While heating until reaching 0 ° C. and holding the sleeve 1 with the holding bodies 3 and 4, the holding bodies 3 and 4 are rotated, and at the same time, ink is ejected from the ink applicator 8 toward the outer surface of the sleeve 1. , The ink applicator 8 is moved in the longitudinal direction of the sleeve 1.

In this way, on the outer surface of the sleeve 1,
Ink is applied in a predetermined pattern.

After that, the concave pattern 1c is formed as a result of etching the portion of the ink to which the mask pattern 2 is not adhered by the etching liquid.

In this case, it is possible to directly attach the ink while keeping the entire sleeve 1 at a constant high temperature state, and the same effect as the above high temperature treatment can be obtained.

Further, as in the case of the second embodiment, as shown in FIG. 4, when sandblasting is performed before the ink is adhered to the outer surface of the sleeve 1 in a predetermined pattern, the same effect as that described above can be obtained. can get.

(Fifth Embodiment) The fifth embodiment of the present invention will be described below, particularly the inventions described in claims 9 to 10.

FIG. 7 shows a heat treatment method by the heat irradiator 9 in the fifth embodiment of the present invention.

In FIG. 7, the sleeve 1 is made up of the holders 3 and 4.
The holding bodies 3 and 4 are rotated while holding.

At the same time, ink is jetted from the ink applicator 8 toward the outer surface of the sleeve 1, and at the same time, hot air of 200 ° C. or higher is continuously jetted from the heat irradiator 9 toward the outer surface of the sleeve 1. The ink applicator 8 and the heat irradiator 9 are moved in the longitudinal direction of the sleeve 1.

After that, the concave pattern 1c is formed as a result of etching the portion of the ink on which the mask pattern 2 is not adhered by the etching liquid.

In this case as well, the same effect as in the case described above can be obtained by the high temperature treatment by the heat irradiator 9.

Further, as in the first embodiment, as shown in FIG. 4, after the sand blasting is applied, the heat irradiator 9 is used.
The effects obtained by sandblasting are the same when the heating and the ink adhesion are performed by.

Further, since the step of adhering the ink to the outer surface of the sleeve 1 and the step of high temperature treatment with hot air are simultaneously performed, the work efficiency is good and the treatment can be carried out in a short time.

[0064]

As described above, according to the present invention, when a regular concave pattern is provided on the outer surface of the sleeve, the ink and the outer surface of the sleeve are adhered to each other by heat treatment when applying the ink. As a result, it is possible to prevent side etching at the time of etching, stabilize the amount of concave portions, and appropriately convey toner, and as a result, it is possible to perform precise printing.

[Brief description of drawings]

FIG. 1 is a front view of a cylindrical sleeve according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the inside of a high temperature tank showing the manufacturing method according to the same embodiment.

3A and 3B are enlarged cross-sectional views of a sleeve and ink for comparing the effects of the present invention.

FIG. 4 is a front view showing a manufacturing method according to a second embodiment of the present invention.

FIG. 5 is a cross-sectional view showing the inside of a high temperature tank showing a manufacturing method according to a third embodiment of the present invention.

FIG. 6 is a front view showing a manufacturing method according to a fourth embodiment of the present invention.

FIG. 7 is a front view showing a manufacturing method according to a fifth embodiment of the present invention.

[Explanation of symbols]

1 sleeve 2 mask pattern 3 holder 4 holder 5 high temperature tank 6 Sandblast irradiator 7 heater 8 Ink applicator 9 Heat irradiator

Continued front page    (72) Inventor Takahisa Yamaguchi             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Yoshio Takayama             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F-term (reference) 2H031 AC10 AC11                 2H077 AC12 AD06 FA02 FA03                 4K057 WA05 WA11 WB02 WB05 WC01                       WC08 WN04 WN10

Claims (10)

[Claims] 1. A magnet roll comprising a cylindrical sleeve which is subjected to a high temperature treatment, an ink having a predetermined pattern deposited on the outer surface of the sleeve, and a regular concave pattern formed on the outer surface of the sleeve by etching. Production method. 2. The method of manufacturing a magnet roll according to claim 1, wherein the outer surface of the sleeve is sandblasted before the high temperature treatment. 3. The method of manufacturing a magnet roll according to claim 1, wherein the high temperature treatment of the entire sleeve is performed by placing a cylindrical sleeve in a high temperature tank. 4. A magnet in which ink is adhered in a predetermined pattern on the outer surface of a cylindrical sleeve, then the entire sleeve is subjected to high temperature treatment, and thereafter a regular concave pattern is formed on the outer surface of the sleeve by etching. Roll manufacturing method. 5. The method of manufacturing a magnet roll according to claim 4, wherein the outer surface of the sleeve is sandblasted before the ink is attached. 6. The method of manufacturing a magnet roll according to claim 4, wherein the high temperature treatment of the entire sleeve is performed by placing a cylindrical sleeve in a high temperature tank. 7. A heater is placed in a cylindrical sleeve to heat the sleeve, and ink is adhered to the outer surface of the sleeve in a predetermined pattern, and then a regular concave pattern is formed on the outer surface of the sleeve by etching. Magnet roll manufacturing method. 8. The method of manufacturing a magnet roll according to claim 7, wherein the outer surface of the sleeve is sandblasted before the ink is attached. 9. A magnet roll in which an ink is adhered in a predetermined pattern on a cylindrical sleeve outer surface while being heated by a heat irradiator, and then a regular concave pattern is formed on the outer surface of the sleeve by etching. Manufacturing method. 10. The method of manufacturing a magnet roll according to claim 9, wherein the outer surface of the sleeve is sandblasted before the ink is attached.