JPH0675496A - Oil applying cleaning roller - Google Patents

Abstract

PURPOSE:To make an oil applying amount uniform and stable even in the case of leaving a roller as it is for a long time, to shorten impregnating time, to facilitate production, to make cost low and to make weight light by fitting an oil impregnated material in the spiral groove of a core material and providing an oil control layer on the outer periphery thereof. CONSTITUTION:The oil impregnated material is fitted in the spirial groove 4 of the core material 1 having shaft parts 3 projected to both ends of a roller part 2 where the spiral groove 4 is peripherally provided, the oil control layer 8 is provided on the outer periphery of the material 1, and a facing layer 9 is provided on the outer periphery of the layer 8. This roller is set to peripherally contact with the heating roller and the fixing roller of the fixing device of a facsimile printer. With the rotation of the roller, a very small amount of oil from the layer 9 is applied to be in a thin film state on the heating roller or the fixing roller through the layer 8 from the oil impregnated material fitted in the spiral groove 4, so that an oil reflux mechanism is formed and performs a series of oil supply. Therefore, the residue of toner on the heating roller adheres to felt by the wet of the layer 9 and the outer peripheral surface of the fixing roller is kept clear.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil coating cleaning roller in a fixing device of a facsimile printer.

[0002]

2. Description of the Related Art Conventionally, in a facsimile printer, a copying paper carrying toner as shown in FIG.
11 is sandwiched between the heating roller 12 and the fixing roller 13,
A fixing device A for melting and fixing the toner is provided. Then, it makes circumferential contact with either one of the rollers 12 and 13 to improve the releasability of the rollers 12 and 13, and
An oil coating cleaning roller 14 for removing dirt adhering to the surface of the roller is provided.

As shown in FIG. 5, a conventional oil-applied cleaning roller has a felt on the outer circumference of a core metal 15.
A roll of 16 was used and the felt 16 was impregnated with an appropriate amount of silicone oil.However, if the finished product was left in inventory for a long time, keep the oil application amount constant during roller assembly. However, because of difficulty in storage, the rollers disclosed in, for example, Japanese Utility Model Laid-Open No. 59-73762 and Japanese Patent Laid-Open No. 63-37369 are currently used.

As shown in FIG. 6, the roller of Japanese Utility Model Laid-Open No. 59-73762 contains silicone oil 19 in a hollow roller 17 having a large number of small holes 18 in its peripheral wall, and a pulp material is provided on the outer periphery of the hollow roller 17. An oil impregnated layer 20 and a skin layer 21 are provided. The roller disclosed in Japanese Patent Laid-Open No. 63-37369 is provided with an oil holding layer 22 in which oil such as pulp is impregnated on the surface of a core metal 15 and a felt skin layer 21.

[0005]

However, in the former roller, it takes time to inject an appropriate amount of oil into the hollow roller 17 by hand, and it is not possible to handle a large amount of orders, and when it is left for a long time. In particular, since the amount of oil applied increases at the initial stage and copy paper becomes oily,
There are drawbacks such as poor storage stability, almost all of the oil in the hollow roller 17 is not consumed, and the waste of the residual oil is incorporated into the cost, resulting in a high cost.

Also, in the latter roller, it is necessary to impregnate the oil retaining layer 22 with a large amount of oil and evenly impregnate the oil before assembling into a product, which requires 5 to 10 days. Since the oil retaining layer 22 has to be wound around the entire circumference of the cored bar 15, it is troublesome in manufacturing and the cost is high. When a large amount of oil is applied, the copy paper 11 has a drawback that it becomes soiled with oil.

The present invention has been made in order to solve the above-mentioned conventional problems. Even when left for a long time, the amount of oil applied is uniform and stable, and the impregnation time of oil is short. Is simple, low cost and light weight,
It is intended to provide an oil application cleaning roller.

[0008]

The structure of the present invention for achieving the above object will be described with reference to the drawings corresponding to the embodiments. In the present invention, the roller portion 2 around which a spiral groove 4 is provided is provided. An oil impregnating material 7 is fitted into the spiral groove 4 of the core material 1 in which the shaft portions 3 and 3 are provided at both ends of the oil-impregnated material 7, and an oil control layer 8 is provided on the outer circumference thereof, and a skin layer 9 is further provided on the outer circumference thereof. Is provided.

[0009]

The oil application cleaning roller of the present invention is a heating roller 12 for a fixing device A of a facsimile / printer.
Alternatively, it is installed around the fixing roller 13. Along with the rotation, a small amount of oil is applied in a thin film form from the skin layer 9 to the heating roller 12 or the fixing roller 13 from the oil impregnating material 7 fitted in the spiral groove 4 through the oil control layer 8 to impregnate the oil. An oil recirculation mechanism is formed between the material 7 and the skin layer 9, and a series of oil is supplied. As a result, due to the wetness of the skin layer 9, the toner residue adhered to the surface of the heating roller 12 after the copy paper is conveyed due to the rotation is felt 16.
Therefore, cleaning is performed to keep the outer peripheral surface of the fixing roller 13 always clear.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall view showing a part of the oil coating cleaning roller of the present invention by cutting away, FIG. 2 is a perspective explanatory view of the essential part, and FIG. 3 is a longitudinal sectional view thereof. The roller of this embodiment shown in these figures is composed of a core material 1, an oil impregnated material 4, an oil control material 5 and a skin material 6.

The core material 1 is made of a material such as iron, aluminum or plastic and is formed into a cola shape as a whole, and a shaft is provided at both ends of a roller portion 2 around which a spiral groove 4 having a required width and depth is provided. The structure is such that the parts 3 and 3 are provided in a protruding manner.
The core material 1 can be formed by cutting the spiral groove 4 and the shaft portions 3 and 3 from a single shaft-shaped material, and can be formed by molding when plastic is used as the material. Further, as shown by the dotted line in FIG. 1, the core material 1 can be formed by winding the spiral coil 6 around the shaft body 5 having the same diameter extending between the shaft portions 3 and 3.

An oil impregnating material 7 having a felt impregnated with a cleaning oil such as silicon is fitted into the spiral groove 4 of the core material 1. The oil-impregnated material 7 can be easily fitted by using a string-shaped member having a cross section corresponding to the spiral groove 4 and winding-fitting. In this way, the oil control layer 8 made of pulp material or the like is provided on the outer periphery of the roller portion 2 of the core material 1 in which the oil impregnated material 7 is fitted in the spiral groove 4, and the outer periphery thereof is made of felt or the like. A skin layer 9 is provided. In addition, end collars 10 for preventing oil leakage are provided at both ends of the roller portion 2,
Ten are provided.

Next, an example of an experiment conducted using the oil coating cleaning roller of the above embodiment will be shown.

(1) Experimental apparatus ○ Specifications of the roller portion of the roller of the present invention: outer diameter: 20 mm, length: 310 mm, spiral groove cross section: width 6 mm
× Depth 5 mm, Spiral groove pitch: 11 mm, Oil used: Dimethyl silicone oil 60,00 Cs Oil impregnation amount: 29 g 〇 Heating roller: 50 ^mm φ, PFA coating, fixing temperature
200 ° C. 〇 fixing roller: 50 ^mm phi, PFA coating,

(2) Content of test The oil coating cleaning roller 14 of the present invention is circumferentially contacted with the fixing roller 13 at A3, A4 and A4 at a fixing temperature of 200 ° C.
Continuous copy of B4 and B5 copy paper 3,500 sheets / day 72,000
I went one.

(3) Test Results: Staining due to toner adhesion on the fixing roller (when used) When copying 72,000 sheets, no stain on the fixing roller At the end of 72,000 sheets, the oil consumption of the cleaning roller was 17 g. 〇 Oil stains on the paper feed (control material) A small amount occurs at the beginning of 0 to 1,000 sheets. None thereafter. 〇 Oil stains on the fixing roller and outer peripheral surface (when stopped) No oil leaks after 2 hours, 4 hours, and 6 hours of continuous heating and heating at 200 ° C. 〇 Oil stains on the outer surface of the fixing roller (for a long time, 48 hours) Only a trace of oil can be seen. 〇Amount of oil applied: 0.09g at the start (0 to 1 hour elapsed), then gradually decreased (about 0.00025g)

From the above results, it can be judged that the oil-applied cleaning roller (spiral groove type) of the present embodiment hardly causes oil stains on the conventional fixing roller and the paper passing portion, and the cleaning effect is maintained. You can get it. This means that the adoption of the spiral groove system ensures that oil control is guaranteed, and that the amount of oil applied is very small unless the conditions such as dirt on the fixing roller (toner residue) and releasability are inferior. Match. In this respect, it can be proved that the oil coating cleaning roller of the present experiment sufficiently satisfies the above purpose of use because the coating amount thereof is as very small as several microns.

[0018]

As described above, since the oil-applied cleaning roller of the present invention is provided with the oil-impregnated material fitted spirally, the oil control layer and the skin layer, the oil is unevenly distributed even when left for a long time. Therefore, stable oil supply can be achieved, and the amount of oil can be controlled according to the amount of oil applied and the amount of accumulated oil. Therefore, waste of oil can be eliminated.

Further, since the oil impregnated material for accumulating oil is wound and fitted in the spiral groove, the work can be automated, and the cost can be reduced together with the reduction of the oil accumulation amount.

[Brief description of drawings]

FIG. 1 is a partially cutaway overall view showing an embodiment of the present invention.

FIG. 2 is a perspective explanatory view of the same main part.

FIG. 3 is a vertical sectional view of the same.

FIG. 4 is a schematic view showing a fixing device.

FIG. 5 is a vertical sectional view showing a conventional oil application cleaning roller.

FIG. 6 is a vertical cross-sectional view showing another conventional example.

FIG. 7 is a vertical cross-sectional view showing still another conventional example.

[Explanation of symbols]

 A Fixing device 1 Core material 2 Roller part 3 Shaft part 4 Spiral groove 5 Shaft body 6 Spiral coil 7 Oil impregnation material 8 Oil control layer 9 Skin layer 10 End color 11 Copy paper 12 Overheating roller 13 Fixing roller 14 Oil applying cleaning roller

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[Procedure amendment]

[Submission date] August 25, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction content]

[0011] core 1, iron, aluminum, using a material such as plastic, is formed on the entire B over La-shaped, both ends of the roller portion 2 was provided around the spiral groove 4 having a predetermined width and depth It has a structure in which the shaft portions 3, 3 are provided in a protruding manner.
The core material 1 can be formed by cutting the spiral groove 4 and the shaft portions 3 and 3 from a single shaft-shaped material, and can be formed by molding when plastic is used as the material. Further, as shown by the dotted line in FIG. 1, the core material 1 can be formed by winding the spiral coil 6 around the shaft body 5 having the same diameter extending between the shaft portions 3 and 3.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction content]

(3) Test Results ○ Staining due to toner adhesion on the fixing roller (when used) No copying stain on the fixing roller during 72,000 school copying. At the end of 72,000 sheets, the oil consumption of the cleaning roller was 17 g. . ○ Oil stains on the paper passing section A small amount occurs at the beginning and when 0 to 1,000 sheets are finished. None thereafter. ○ Oil stains on the fixing roller and outer peripheral surface (when stopped) No oil leakage after 2 hours, 4 hours, and 6 hours of running at 200 ° C with heating and pressurization. ○ Oil stains on the outer surface of the fixing roller (for a long time, 48 hours) A slight oil trace can be seen. ○ when the coating amount of the start of the oil (0-1 hours later) 0.09g, and then gradually decrease (about 0.05 g)

(72) Inventor Hiroki Furuya 8-4 Manganji, Hino-shi, Tokyo (72) Inventor Hideo Nakagawa 21-6, Ajanta Chofu 211, 1 Kojima-cho, Chofu-shi, Tokyo

Claims (1)

[Claims] An oil-impregnated material is fitted in the spiral groove of the core material having shaft portions protruding from both ends of a roller portion having a spiral groove, and an oil control layer is provided on the outer periphery thereof, and a skin layer is further provided on the outer periphery thereof. An oil application cleaning roller, characterized by being provided with.