JP2001062380A - Method for applying highly viscous coating solution to surface of cylindrical body, fixing roller produced by the method, and manufacture of the fixing roller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry out a uniform and thin coating application by moving a liquid pressing plate in the cylinder axial direction, while supplying a highly viscous coating solution at a constant discharge speed so as to keep the highly viscous coating solution in a gap part of the liquid pressing plate. SOLUTION: When a gap to a roller of a cylindrical body to be moved horizontally on a substrate is seen parallely with a core axis, in the core axial direction, there are installed are a liquid pressing plate-holding part 3b finely adjustable, keeping a parallel state to the tangent line of the circumference of the core and a liquid pressing plate 31a having a coating solution discharge part. The liquid pressing plate 31a is brought close to the surface of the roller core 1 to form a gap part, and while supplying a highly viscous coating solution 6 at a constant discharge rate, keeping the highly viscous coating solution 6 in the gap part, the liquid pressing plate 31a is moved in the cylinder axial direction. Consequently, a fixing roller with excellent characteristics can be manufactured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a cylindrical roller used for fixing, pressing, charging, transferring, developing and the like used in OA equipment such as a copying machine and a facsimile. The present invention relates to a method for applying a high-viscosity coating solution directly and uniformly on the surface of a thin film, and a fixing roller produced by the method.

[0002]

2. Description of the Related Art Conventionally, as a coating method for applying a coating solution on the surface of a cylindrical body, for example, a spray coating method, a dip coating method, a roll coating method, a blade coating method, and a quantitative coating method using a dispenser (Japanese Patent Application Laid-Open No. No. 089867) are being studied.

[0003] In an electrophotographic apparatus such as a copying machine or a facsimile / LBP, a cylindrical roller is used in various processes such as fixing, pressing, charging, transferring and developing. Thus, a film having a desired function is formed on the surface of the cylindrical body. In particular, in recent years, a thin and uniform coating film is required, and a coating liquid itself to be coated has been diversified in order to express a desired function. As a result, some coating liquids also have high viscosity, and as a result, there have been some substances which cannot be coated with a uniform coating by the conventional method as shown in the following examples.

As an example, the spray coating method can be used only for a coating solution having a low viscosity, and the viscosity of the coating solution is 10 Pa ·
If it is more than s, atomization may be difficult. The liquid viscosity is measured at room temperature with a B-type viscometer. Further, the blade coating method and the roll coating method, for example, a blade or a roll is arranged in the axial direction of the cylindrical body, coating is performed while rotating the cylindrical body, after one or several rotations of the cylindrical substrate, the blade or the roll Is retracted to finish the application. When the blade or roll is retracted at the end of the application, the viscosity of the coating solution causes a portion of the coating film to have a thicker portion than other portions. At the time of leveling, it may become unrecoverable and a uniform coating film may not be obtained. Further, in the dip coating method, the problem of coating uniformity in spray coating method, blade coating method, roll coating method and the like is improved, but control of the film thickness of the coating film is performed by controlling the physical properties of the coating solution, for example, coating. Liquid viscosity, surface tension and density,
In addition, since it is governed by temperature and the like, it is difficult to adjust the physical properties of the coating solution, and when the coating solution has a high viscosity, it is difficult to perform thin coating. In addition, in the case of a constant amount coating method using a dispenser, when the coating liquid discharged from the nozzle has a high viscosity, the shape at the time of discharging is maintained because the liquid is to be maintained in the shape at the time of discharge. May become large.

[0005]

For this reason, conventionally, such a high-viscosity coating solution is diluted with a solvent and applied in a state where the viscosity is reduced to a level necessary for coating, and the solvent used for dilution in a subsequent step is used. Is formed by removing, for example, by evaporation. However, in such a method using a solvent, it takes a long time to remove the solvent, and a dedicated recovery device is required, so that the apparatus becomes large-scale, resulting in an increase in cost. In addition, there is a concern that a problem such as stringing or agglomeration may occur in matching of the coating liquid and the solvent, so that the type of the coating liquid and the solvent may be limited.

[0006]

According to the present invention, a high-viscosity coating solution having a viscosity of 10 Pa · s or more is applied to the surface of a cylindrical body rotating around a horizontal cylindrical axis. A method of applying, wherein a liquid pressing plate is brought close to the surface to form a gap portion, and the high-viscosity coating solution is supplied at a constant discharge speed so that the high-viscosity coating solution is held in the gap portion. A method of applying the high-viscosity coating liquid to the surface of the cylindrical body, the method including a coating step of moving the liquid pressing plate in the axial direction of the cylinder. Here, the liquid pressing plate means that the high-viscosity coating liquid is pressed against the surface of the cylindrical body by discharging a constant amount of the high-viscosity coating liquid per unit time into a gap formed between the surface of the cylindrical body and the liquid pressing plate. Refers to a member that can be made to have a thickness of, for example, a shape as shown in FIG. 1B. The length of the liquid pressing plate forming the gap is shorter than the coating length obtained by projecting the coating region on the surface of the cylindrical body onto the cylindrical axis. The liquid viscosity is measured at room temperature with a B-type viscometer.

In the present invention, the liquid discharge port and the liquid pressing plate may be integrated or may be separate members. The liquid pressing plate is not limited to the position above the cylindrical body but may be at any position as long as liquid dripping does not occur due to the relationship between the coating liquid viscosity and the coating thickness. By applying a shear to the high-viscosity coating liquid at the gap between the surface of the cylindrical body and the liquid pressing plate in this manner, the effect of reducing the apparent liquid viscosity can be obtained. In addition, the method of relatively moving the liquid pressing plate in the cylindrical body axis direction in parallel with the cylindrical body axis is performed by applying the liquid pressing plate from the liquid pressing plate without leaving a distance between the liquid pressing plate and the cylindrical body as in blade coating. Liquid peeling occurs. For this reason, it is possible to suppress the spiral coating film thickness increase portion which is a trace of coating liquid peeling immediately after coating. Even if a spiral coating thickness increase occurs, it can be recovered during subsequent leveling, and a thin and uniform coating film can be obtained. Therefore, according to the method for applying a high-viscosity coating solution to the surface of a cylindrical body disclosed in the present invention, a high-viscosity coating solution can be directly applied to the surface of the cylindrical body directly, in a thin layer, and easily and inexpensively. For example, a fixing roller excellent in fixing property and paper transporting property and free from paper wrinkles can be manufactured with high yield.

[0008]

In the present invention, the width of the gap is constant, and the concave portion is pressed so that the holding amount of the high-viscosity coating liquid gradually decreases in the direction opposite to the moving direction of the liquid pressing plate. By forming the high-viscosity coating solution from the liquid pressing plate, it is preferable that the high-viscosity coating liquid be peeled off from the liquid pressing plate in the gap excluding the rear end of the liquid pressing plate. As an example of such a liquid pressing plate, a shape as shown in FIG. 2B can be given.

By providing the concave portion as described above in the liquid pressing plate, it is possible to prevent the coating liquid from flowing to the opposite side in the traveling direction during coating, and to prevent the coating liquid from peeling off when the coating liquid is peeled off due to the edge effect. The coating liquid can be peeled off from the liquid pressing plate in the range of the concave portion by avoiding the rear end of the pressing plate so that the coating can easily become relatively thick. Since the minimum gap distance between the liquid pressing plate and the surface of the cylindrical body is constant, it is possible to suppress as much as possible the portion where the thickness of the spiral coating film, which is the trace of coating liquid peeling immediately after coating, has increased. As a result, the time for subsequent leveling can also be shortened, and a coating film with even more excellent thinness and uniformity can be obtained.Thus, it is preferable to provide the liquid pressing plate with the above-described concave portion. It is not limited to this.

Further, in the present invention, it is preferable that, when the leveling of the high-viscosity coating liquid is performed after the coating step, the rotational speed of the cylindrical body is lower than that in the coating step.
When a high-viscosity coating solution is applied, the coating liquid may be slightly peeled off immediately after the application, and a spiral coating film thickness-increased portion resulting from the coating liquid peeling may remain. Furthermore, if the cylinder is kept rotating at some high speed in order to apply shear to the coating liquid during coating, centrifugal force may cause the coating liquid to concentrate on the thick part, and thicker unevenness may be emphasized. is there. For this reason, by lowering the rotation speed of the cylindrical body after coating to the extent that the coating liquid does not sag, a greater leveling effect can be obtained, and a coating film having better thinness and uniformity can be obtained. Therefore, it is preferable to reduce the number of rotations, but the present invention is not limited to this.

Further, in the present invention, a liquid storage portion is attached to the liquid pressing plate, and the liquid pressing portion is filled with a predetermined amount of the high-viscosity coating liquid for a predetermined time before the coating step. It is preferable to stop the movement of. By stopping the movement of the liquid pressing plate for a certain period of time at the start of coating, filling the liquid storage part with a certain amount of coating liquid to temporarily apply the coating during coating due to slight variations in the gap due to deflection of the cylinder. This is because it is possible to prevent the occurrence of uncoated stripes due to insufficient liquid supply. Therefore, it is preferable to stop the movement of the liquid pressing plate for a predetermined period of time in order to obtain a coating film having better thinness and uniformity, but the present invention is not limited to this.

A fixing roller used in an electrophotographic apparatus such as a copying machine or a facsimile / LBP is a roller that forms a nip with a pressure roller and permanently fixes a toner image on a recording medium. An elastic layer formed by coating a thin silicone rubber or a fluororesin tube coated or coated thereon is used. Further, an adhesive layer and a release layer are formed as necessary. Since the fixing roller has problems of paper transportability and paper wrinkling, it is preferable that the outer diameter is an inverted crown. When applying silicone rubber raw material directly and thinly on the metal core of the inverted crown using this coating method in a state of high viscosity, the liquid pressing plate should be shaped like an inverted crown and maintain a constant gap. You can move it. However, in the case of a generally used inverted crown shape of 500 μm or less, the coating liquid follows the inverted crown shape of the cored bar by simply moving the metal in a fixed state in parallel with the axis of the metal cored bar. . For this reason, the application of the inverted crown shape can be performed by a simple one-axis moving device. Therefore, the present invention is suitable for the application method of the fixing roller having the inverted crown shape. That is, in the present invention, there is provided a method for manufacturing a fixing roller including a cored bar and an elastic layer mainly composed of silicone rubber formed on the outer periphery of the cored bar. A method of manufacturing a fixing roller, wherein the elastic layer is formed by a method of applying a viscosity coating solution is provided. Further, a fixing roller manufactured by the manufacturing method is provided.

Although the present invention is suitably used for manufacturing the fixing roller as described above, the present invention is not limited thereto.
Fixing used in OA equipment such as copiers and facsimile machines,
It can be applied to cylindrical rollers and tubes used for pressurization, charging, copying, developing, etc. In addition, a high-viscosity coating liquid is applied directly and uniformly to the surface of the cylindrical body. Can be used in case.

Examples of the silicone rubber in the present invention include methyl silicone rubber, dimethyl silicone rubber,
Examples include fluorosilicone rubber, vinyl methyl silicone rubber, and phenyl silicone rubber, but the present invention is not limited to these. The addition-type methylphenylpolysiloxane is a polysiloxane obtained from a siloxane compound having an addition-type reactive group such as a vinyl group in addition to a methyl group and a phenyl group, and is added by crosslinking such a polyorganosiloxane. A mold silicone rubber is obtained. The vulcanizing agent is not particularly limited as long as it can crosslink the polyorganosiloxane, and any vulcanizing agent can be used. When the silicone rubber is a millable silicone rubber, an organic peroxide is used. Examples of such organic peroxides include benzoyl peroxide, bis 2,4-dichlorobenzoyl peroxide, di-t-butyl peroxide, dicumyl peroxide, and the like. The above-mentioned vulcanizing agents can be generally used as the vulcanizing agent.
0.01 to 5 parts by weight, preferably 0.1 part by weight per 0 parts by weight
It is used in an amount of about 3 parts by weight.

The silicone rubber used in the present invention may be a filler generally added to silicone rubber. For example, fumed silica, precipitated silica, hydrophobized silica, carbon black, titanium dioxide, ferric oxide, aluminum oxide, magnesium oxide, zinc oxide, quartz powder, diatomaceous earth, calcium silicate, talc, bentonite, Asbestos, glass fiber,
Organic fibers and the like, and one or more of these are blended. Among them, preferred as the inorganic filler from the viewpoint of heat resistance, mechanical strength, and the like, bengara, black bengara,
Cerium oxide, silica, and the like can be given. The amount of these fillers is 0 to 90 parts by weight, preferably 0 to 80 parts by weight, based on 100 parts by weight of the silicone rubber. Within this range, the characteristics of the obtained fixing roller will be more excellent.

Examples of the high-viscosity coating solution in the present invention include the above-mentioned silicone rubber, the raw material of the silicone rubber and the liquid containing the raw material, and the above-mentioned silicone rubber, the raw material of the silicone rubber and the liquid containing the raw material. A mixture to which the above filler is added can be given, but the present invention is not limited thereto. When the raw material of the silicone rubber contains a filler, the weight of the cross-linking agent and the weight change accompanying the rubberization reaction can be neglected.
It can be interpreted that the added parts by weight of the filler relative to parts by weight are the added parts by weight of the filler relative to 100 parts by weight of the silicone rubber.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

Example 1 In order to verify the effect of the present invention, a high-viscosity coating solution was applied as follows. FIG. 1 shows a schematic diagram of the coating method of Example 1. There is a coating table 2 on a substrate, on which a cylindrical cored bar 1 can be rotated horizontally and about an axis to move horizontally in the axial direction. Further, the distance between the roller core 1 and the substrate can be finely adjusted without moving horizontally on the substrate while maintaining the state parallel to the core metal axis and parallel to the tangent line of the core metal circumference when viewed from the axis of the core metal. A liquid pressing plate holding portion 3b and a liquid pressing plate 31a provided with a coating liquid discharge port therein are attached. In the present embodiment, the liquid pressing plate 31a is located above the metal core 1, and the liquid pressing plate 31a is made of Delrin having a width of 40mm in the core metal axial direction, a depth of 30mm, and a thickness of 10mm (maximum portion). The liquid pressing plate 31a is provided on the liquid contacting surface side of the flat plate (FIG. 1a) as shown in the sectional view of the liquid pressing plate and the liquid pressing plate moving shaft passing through the core metal shaft. It has a shape on the liquid contact surface side (FIG. 1b, counter side indicated by an arrow) with a gentle inclined cut parallel to the axis. Further, the coating liquid 6 discharge port is provided in the direction opposite to the movement of the coating table from the center in the width direction at the inclined cut portion on the counter side of the moving shaft. The coating liquid 6 discharged in such a shape is applied to the surface of the core metal that has been sheared between the core metal and the liquid pressing plate while being held at the inclined cut portion. The discharge port is connected to a motor-driven cylinder pump 5 capable of discharging a fixed amount (per hour) through a tube 4 for transporting the coating liquid, from which the coating liquid 6 is supplied. The cylinder pump does not generate liquid pulsation, so stable discharge is possible.

Next, in this embodiment, the φ45 coating unit 300
liquid viscosity 100mm
The process when coating the LTV silicone rubber material with a thickness of 250 μm will be described. The liquid viscosity was measured at room temperature with a B-type viscometer. First, the metal core 1 is attached to the coating table 2. The distance between the liquid pressing plate and the core was set to 250 μm. Cylinder pump 5 with the core metal rotated at 40 rpm
The coating was performed by moving the coating table at a moving speed of 110 mm / min while constantly discharging the coating liquid at a discharge rate of 3909 mm ³ / min. At this time, peeling of the coating liquid from the liquid pressing plate 31a occurs at the rear end of the liquid pressing plate (FIG. 1c).
A part of the spiral coating film thickness increase, which is a trace of coating liquid peeling immediately after coating, occurred slightly, but after that, when leveling was performed with the rotation of the core metal kept at 40 rpm. The coating liquid was hardly peeled off after being left idle for about 20 minutes, and a thin and uniform coating film was obtained.

(Comparative Example 1) Under the same conditions as in Example 1, without applying a liquid pressing plate, the coating liquid was ejected from the nozzle when the coating was performed with the interval between the coating nozzle and the core metal set to 250 μm. Therefore, the coating did not spread, and immediately after coating, the thickness of the spirally large coating film became uneven, so that it was not leveled even when it was left idle.

Example 2 In order to verify the effect of the present invention, a high-viscosity coating solution was applied as follows. FIG. 2B shows the shape of the liquid pressing plate used in the second embodiment of the present invention on the liquid contact side. In order to have a concave portion in which the liquid storage amount of the liquid pressing plate 32a gradually decreases in the direction opposite to the liquid pressing plate relative traveling direction, the rear end in the relative movement direction on the liquid contact surface side of the flat plate, the counter side with respect to the rotation of the roller. An inclined cut portion is provided in both horizontal axes from the apex angle of the liquid pressing plate width to the center of the liquid pressing plate to reduce the plate thickness, and the remaining portion is rotated by a roller of the liquid pressing plate moving shaft passing through the core shaft. The counter side has a shape with a gentle slope cut parallel to the core shaft. Further, the application liquid discharge port is provided in a gentle inclined cut portion parallel to the cored bar axis in the relative movement direction in the width direction.

The coating was performed under the same conditions as in Example 1 except that the liquid pressing plate 32a was used. At this time, the liquid pressing plate 32a
Peeling of the coating liquid from the liquid pressing plate occurred within the range of the liquid pressing plate except for the rear end of the liquid pressing plate 32a (portion indicated by a circle in FIG. 2c).

Although a portion of the spiral coating having increased thickness, which is a trace of the coating liquid peeling immediately after coating, slightly occurred, the extent was better than that of Example 1, and thereafter the rotation of the core metal was kept at 40 rpm. When the belling was performed, the coating liquid was hardly peeled off after being left idle for about 15 min, and a thinner and more uniform film was obtained.

Example 3 In order to verify the effects of the present invention, a high-viscosity coating solution was applied as follows. After coating under the same conditions as in Example 2, the rotation of the core was reduced to 1/10 of 4 rpm and leveling was performed. As a result, the leveling property was improved, and the coating liquid was hardly peeled off after being left idle for about 10 minutes, and a thinner and more uniform coating film was obtained.

Example 4 In order to verify the effects of the present invention, a high-viscosity coating solution was applied as follows. During application of the high-viscosity coating solution according to Example 3, uncoated streaks were sometimes generated due to partial shortage of the coating solution due to runout of the metal core and variation in cylindricity. For this reason, about 5s at the start of coating
The movement of the ec liquid pressing plate 32a was stopped so that the fixed liquid storage portion was filled with a certain amount of the coating liquid. As a result, it was possible to prevent the occurrence of uncoated streaks due to the partial supply shortage of the coating liquid due to the fluctuation of the core metal and the variation in the cylindricity, and a more thin and uniform coating film was obtained more stably.

Example 5 In order to verify the effect of the present invention, a high-viscosity coating solution was applied as follows to prepare a fixing roller. Coating part 300m by the coating method described in Examples 1-4
m, and both ends are φ45 and the center is φ44.9. An LTV silicone rubber material DY35- manufactured by Toray Dow Corning Silicone Co., Ltd. having a liquid viscosity of 130 Pa · s and a liquid viscosity of 130 Pa · s is provided on a 100 μm inverted crown-shaped aluminum core bar 12 having a diameter of 44.9. 561 was applied with a thickness of 250 μm. The liquid viscosity was measured at room temperature with a B-type viscometer. In this embodiment, first, as shown in FIG. 1, the core bar 1 (12 in FIG. 3 showing this embodiment) is attached to the coating table 2, and the distance between the liquid pressing plate 32a and the core bar 12 is set at both ends of the core bar. Was set to be 250 μm. 4 rotation of core
Coating was performed by moving the coating table at a moving speed of 110 mm / min while constantly discharging the coating liquid at a discharge rate of 3909 mm ³ / min by the cylinder pump 5 while rotating at 0 rpm. At that time, peeling of the coating liquid from the liquid pressing plate 32a occurred within the range of the liquid pressing plate except for the rear end of the liquid pressing plate 32a. A slight increase in the thickness of the spiral coating film, which is a trace of coating liquid peeling immediately after coating, occurred, but after coating, the rotation of the cored bar was reduced to 1/10 of 4 rpm and leveling was performed for about 10 min. The coating liquid was hardly peeled off after standing for idle rotation, and a thin and uniform coating film was obtained.

The coated roller was placed horizontally in a hot air circulating drier at 200 ° C. and heated for about 10 minutes to effect crosslinking.
Since the viscosity of the coating liquid itself is high, liquid dripping does not occur even when the coating liquid is not rotated in a hot air circulation type dryer. Then 200
The secondary curing was carried out for 4 hours with a hot air circulating dryer at a temperature of ° C. When the outer diameter of the rubber roller manufactured as described above was measured, the end portion was φ45.49 and the central portion was φ4
An inverted crown shape of 80 .mu.m of 5.41 was obtained. The roller was covered with a PFA heat-shrinkable tube 7 having a thickness of 30 μm to obtain a fixing roller shown in FIG. When inserted as an LBP fixing roller, it was confirmed that sufficient fixing properties and paper transportability were obtained and that generation of paper wrinkles and the like was suppressed.

[0028]

According to the method for coating a cylindrical body according to the present invention, the surface of a cylindrical body that rotates around a horizontal cylindrical axis is provided.
The liquid pressing plate is moved in parallel with the cylindrical axis while forming the gap portion by bringing the liquid pressing plate close to the gap portion and supplying the coating liquid at a constant discharge speed so that the coating liquid is held in the gap portion. For this reason, it becomes possible to apply the high-viscosity coating solution sufficiently thinly and uniformly on the surface of the cylindrical body, and it is possible to manufacture a fixing roller having excellent characteristics.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a coating method according to a first embodiment of the present invention; FIG. 1a is a sectional view of a cored bar and a liquid pressing plate at the time of coating; FIG. 1b is a shape diagram (liquid contact side) of a used liquid pressing plate. 1c Separation state of coating liquid from liquid pressing plate during coating

FIG. 2 is a schematic view showing a coating method after the second embodiment in the present invention. FIG. 2b is a schematic view of a used liquid pressing plate (the liquid contact side). FIG. 2c is a coating liquid from the liquid pressing plate during coating. Peeling state diagram

FIG. 3 is a cross-sectional view of a fixing roller manufactured according to a fifth embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Core metal 12 Aluminum inverted crown metal core 2 Coating stand 31a Liquid pressing plate (Example 1) 32a Liquid pressing plate (Example 2 and subsequent) 3b Liquid pressing plate holding part 4 Tube 5 Cylinder pump 6 Coating liquid (FIG. 3) Elastic layer made of LTV silicone rubber inside) 7 PFA heat shrinkable tube

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G03G 15/20 103 G03G 15/20 103 (72) Inventor Hideo Kawamoto 3-30 Shimomaruko, Ota-ku, Tokyo 2 Canon Inc. (72) Osamu May, the inventor 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Yuji Kitano 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon In-house F term (reference) 2H033 AA31 BB06 BB14 BB15 BB26 BB31 3J103 AA02 AA13 AA24 AA53 EA20 FA15 GA02 GA66 HA03 HA12 HA37 HA53 HA60 4D075 AC02 AC88 AC92 AC93 AE03 CA47 DA15 DA20 DB01 EA05 BA12 BA05 BA12 BA05

Claims (6)

[Claims] 1. A method of applying a high-viscosity coating liquid having a viscosity of 10 Pa · s or more to a surface of a cylindrical body rotating around a horizontal cylindrical axis, wherein a liquid pressing plate is brought close to the surface. A coating step of forming a gap portion and moving the liquid pressing plate in the cylindrical axis direction while supplying the high-viscosity coating solution at a constant discharge speed so that the high-viscosity coating solution is held in the gap portion. A method for applying a high-viscosity coating solution to the surface of a cylindrical body, characterized by comprising: 2. A recess is formed in the liquid pressing plate such that a width of the gap is constant and a holding amount of the high-viscosity coating liquid gradually decreases in a direction opposite to a moving direction of the liquid pressing plate. 2. The method for applying a high-viscosity coating solution to the surface of a cylindrical body according to claim 1, wherein the peeling of the high-viscosity coating solution from the liquid pressing plate occurs in the gap excluding a rear end of the liquid pressing plate. . 3. The cylinder according to claim 1, wherein when performing the leveling of the high-viscosity coating solution, the rotational speed of the cylindrical body is lower than that in the coating process. A method for applying a high-viscosity coating solution to the body surface. 4. A liquid storage section is attached to the liquid pressing plate, and the liquid storage section is filled with a predetermined amount of the high-viscosity coating liquid for a predetermined time before the coating step according to claim 1 or 2. 4. The method for applying a high-viscosity coating liquid to a surface of a cylindrical body according to claim 1, wherein the movement of the pressing plate is stopped. 5. A method for manufacturing a fixing roller comprising a cored bar and an elastic layer mainly composed of silicone rubber formed on the outer periphery of the cored bar, according to claim 1, wherein Forming the elastic layer by a method of applying a high-viscosity coating solution to the surface of the cylindrical body. 6. A fixing roller manufactured by the manufacturing method according to claim 5.