JPS61171912A - Elastic rotor and manufacture thereof - Google Patents

Abstract

PURPOSE:To obtain an elastic rotor excellent in durability and elasticity by applying a resin liquid containing unburned resin material to the outer peripheral surface of the elastic body, and burning the resin liquid of the outer peripheral surface with the elastic body cooled from the interior thereof. CONSTITUTION:A resin liquid 13 containing unburned resin material is applied to the surface of an elastic roller 1 formed by rubber or the like, and the roller is disposed in such a condition in a burning device 102. A magnetron 105 and a waveguide 106 are connected to the burning device 102. In this arrangement, though generated high frequency reaches the whole of the roller 1, only the resin layer is heated due to a difference in specific dielectric constant between a rubber layer 12 and a resin layer 13 of the roller, so that only the resin layer is burned. As cooling air is supplied to the interior of the roller by a fan 100, there is no denatured deterioration of the rubber layer of the roller.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field to which the present invention pertains] The present invention relates to a general rotating body (belt, roller, etc.) having a resin layer on an elastic layer, and a method for manufacturing the same.

Also, the present invention is applicable to rollers and belts that transport paper in printing machines, printers, etc., and word processors (word processors). The present invention relates to conveyance rotating bodies such as rollers and belts used in office machines in general, such as platen rollers of : or conveyance system rollers used in double-sided recording devices.

[Prior art related to the present invention]

Conventionally, in this field, rollers and belts provided with a rubber surface layer or a resin surface layer have been used to convey sheets and articles.

These conveying rotating bodies are used to convey goods.

In some cases, the surface became abraded and the desired conveyance could no longer be carried out.

For example, rubber rollers tend to decrease in diameter or change in surface hardness after long-term use, resulting in poor conveyance or image transfer (platen rollers, etc.), and resin rollers have excellent wear resistance. However, since it does not show any elastic changes, if it becomes slightly worn after long-term use, it will cause transportation failure.

In any case, there is no conventional conveyance rotating body such as a paper feed roller that satisfies the desired purpose and has a durability of more than 200,000 sheets. It has been desired to create a material that has a non-adhesive property, has an appropriate surface hardness, and can stably make elastic contact with articles.

[Object of the present invention]

An object of the present invention is to provide a rotating body that achieves excellent durability not previously available due to elasticity, non-adhesive surface, and surface hardness, and is capable of stable conveyance.

[Summary of the invention]

In order to achieve the above object, the present invention focuses on a rotating body having a resin layer on an elastic layer.

A resin liquid made by mixing an unfired resin material is applied onto the elastic body, and the elastic body layer is heated to a temperature higher than that of the resin liquid while being maintained at a temperature higher than that of the resin liquid. The present invention relates to a method for manufacturing an elastic rotating body, and the elastic rotating body, characterized in that a resin layer is firmly adhered to the elastic layer by firing on the elastic body.

Due to this feature, the present invention exhibits excellent stability, and its durability is 300,000 to 500,000 sheets or more during normal conveyance (
It has a long life of 1 million sheets or more in some cases) and offers various advantages in m-feeding.

Further features of the present invention will become clearer from the description of the embodiments below.

[Example of the present invention]

Rubber layer vulcanized and molded on the core metal (thermal conductivity!, 4XIO
-' to 1.5 x 1O-3) to make a rubber roller of a desired shape. A preferred shape is an inverted crown type in which the center portion is slightly smaller in diameter than the opposite ends.

Spray an unfired resin, such as dispersion (resin powder dispersed in water with a surfactant), enamel, or powdered resin, over the entire length of the rubber roller onto the surface of the rubber roller, and then apply it to the surface of the rubber roller. *The oak coated to a uniform thickness by coating, powder coating, etc. must be heated above the crystalline melting point of the resin. However, rubber itself has rubber properties such as rebound modulus and compression set, but when heated to high temperatures, it causes smoke and depolymerization, which not only prevents the formation of a high-quality resin layer but also damages the rubber itself. Therefore, overheating of the rubber layer renders the roller without the function of the rubber layer and without the characteristics of the resin layer.

For these reasons, in the embodiments of the present invention, a firing method is adopted in which the rubber roller itself is heated at a low temperature that does not cause smoke or depolymerization, while the resin coating layer is heated to a high temperature above its crystal melting point. did.

Specifically, there is a method in which the rubber layer is rapidly cooled from inside the core metal, while the unfired resin on the surface is heated to a temperature of 100°C, or the dielectric loss tangent of the liquid resin (dispersion, enamel) itself is the same as the dielectric loss tangent of the rubber layer. Dielectric heating method that takes advantage of the larger size (
(See Figure 1) In addition, if it conforms to this purpose,
It is suitable for the present invention.

By this method, a thermal gradient is essentially formed in the rubber in its thickness direction, but the temperature lower than the durable part of the rubber (e.g. 200°C or less) is applied to the unsintered resin, but the temperature is higher than its crystal melting point (e.g. A firing temperature of 250° C. or higher is applied for about 5 minutes to 10 minutes. After this firing, the roller is rapidly cooled. This rapid cooling creates a surface layer of the baked resin on the rubber roller that exhibits sufficient resin properties with a low degree of crystallinity.
It is strongly adhered to the rubber roller and is formed to the desired thickness.

Therefore, in the elastic roller l, the lower layer rubber itself exhibits the desired rubber properties almost in the same way as before the formation of the resin layer, the surface resin layer exhibits completely baked resin properties, and the adhesiveness of these layers is It is strong.

Next, the elongation rate and tensile strength of the resin were determined by taking out only the resin film from the mouthpiece after manufacturing as a glue/sample-shaped sample with a diameter of 15 mm and a length of 100 m1, and using a 20 m layer between chucks and a tensile speed of 250 mm. It was measured by performing a tensile test at a rate of 10 minutes per minute. As a result, the properties of the resin were obtained exactly as they were.

The peel strength of the resin was determined by making cuts with a cutter knife at intervals of 1 Oam in the circumferential direction of the roll, and measuring the peel strength of the resin with a part of 2I! # According to this example, the fluororesin layer is pulled with a tensile meter and the maximum value is taken as the peel strength.According to this example, 20 g/fo■
More than width was obtained.

FIG. 1 shows a method of manufacturing a roller of the present invention.

The device shown in FIG. 1 is a specific example of a heating method that uses both a dielectric heating device and infrared external heating.
A waveguide 106 that propagates waves (~2450MHz), and a metallic high-frequency reflection plate 10 on the inner surface of which the waveguide is connected.
3, an openable and closable resin container 102, two upper and lower infrared lamps 111 for infrared external heating, and a reflective shade.

Inside the resin container 102, a fan 100 that generates an air flow inside the hollow of the elastic roller 1 and a fan 101 that generates an air flow inside the container 102 are rotatable by driving from a driving means outside the container. It is provided. This container can be opened and closed at the top and bottom about a fulcrum 108, and has a handle 109 at the top and an arm 107 at the bottom for positioning the flange IA of the elastic roller 1, respectively.

Reference numeral 110 denotes a control means of the apparatus, which operates the driving means 104, the magnetron 105, and the infrared lamp 11 for a predetermined time using a variable timer (not shown) depending on the closed state of the container and the input of a predetermined start signal.

Since the elastic roller 1 has a rubber layer on the lower layer and a resin dispersion on the surface, a large amount of high frequency waves are absorbed in the dispersion, which has a higher dielectric constant than the rubber layer. Therefore, the resin dispersion is heated to a very high temperature by high frequency, infrared rays, and a constant temperature bath, and is heated to a temperature higher than the firing temperature. At this time, since the rubber layer has a low high frequency absorption rate, the dispersion is not heated to a high temperature and is heated to a considerably low temperature. This makes it possible to obtain the roller characteristics described above.

The rubber layer thickness and the resin thickness in the above example were set to 0.1 m.
The present invention includes as preferred embodiments a predetermined thickness in the range of m to 1 mm, the latter in a predetermined thickness in the range of ig to 50 mm. The above thickness is represented by the average thickness of each layer, and is preferably the minimum thickness.

In the above embodiments, no adhesive layer is provided between the resin layer and the rubber layer, but the present invention also includes those provided with an adhesive layer.

The resin/calendar used in the above embodiments preferably contains water having a high dielectric constant, and resins such as silicone, polyimide, polyamide, polyamideimide, etc. are used.

The rubber layer in the above embodiments may be made of any rubber material whose durable temperature is below the melting point of the material of the resin layer, such as ethylene propylene rubber or a mixture of this rubber and other rubber. Ru.

ζ No. 2 that explains specific examples of notifications? A double-sided recording device will be described as a device in which the invention is particularly effective and the effects of its application are more stable.

The apparatus shown in FIG. 2 has an image forming section that forms an image on paper by electrophotographic copying. This image forming process is well known and its explanation will be omitted.

Further, in this example, normal recording paper is used as the transfer material.

In FIG. 2, this embodiment is comprised of a copying machine 17, a duplex unit 18, an automatic document circulation feeder (RDF) 19, and a paper stapler 20. Copy machine 1
7, the summer radiation is projected 1 onto the photoreceptor 24 to silently form a latent image, and the latent image is visualized as a toner image by the developing device 25. The paper onto which the toner image is transferred is sent out from the paper feed table 27 by a paper feed roller 28, and is aligned with the toner image on the photoreceptor 24 by a registration roller 29. Thereafter, the toner image is transferred to the surface of the sheet of paper by means of a transfer belt device 30.

Then, it is separated from the surface of the photoreceptor by the separation charger 14 and conveyed by the bell 35 toward the fixing device.

In addition, various known 76" means such as a reach 32 are arranged around the photoreceptor, as they are necessary for image formation other than those described above. The paper on which the toner image has been fixed after passing through the fixing device receptacle 4 is When copying only one side, the switching guide 38 is located at the dotted line position in the figure.
are guided and discharged to the sorter 20. However,
In the case of double-sided copying, when the single-sided copying is completed, the switching guide 38 is at the solid line position in the figure, so that the paper is guided to the duplexing device section 18 below by this guide 38.

The duplex device section 18 receives the paper on which the first side has been copied by the copying machine 17, and sends out the paper again when the next second side is to be copied.

In addition, this embodiment has a preliminary paper feed table 27I, and it is also possible to transport the paper to the transfer section of the paper feed main body in 17 copying machines. The sheet guided to the duplexer section 18 by the aforementioned switching guide 38 and roller pair 40 is discharged by roller pairs 44, 45 and 46 onto a tray 47 tilted upward to the right in the figure.

At this time, the horizontal direction of the paper (perpendicular to the transport direction)
The lateral positions of the sheets are aligned by guide side walls 48 that determine the positions of the sheets. Next, the trailing end of the paper is pressed downward by a rotating body 49 having elastic protrusions on the outer periphery, and the opening 0. - The paper sheets successively stored in the tray 47 are sent out in a shifted state by the rollers 51 and 52. The sent paper is brought into contact with the roller 53 and the outer circumferential surface of the roller 53, and is turned in a U-turn by the belt 58 and K stretched over the rollers 54, 55, 56, and 57, and is then conveyed with its front and back sides reversed. A guide 59 is disposed above the belt 58, and a presser roller 6° is disposed to sandwich the belt 58 and face the roller 56, so that paper conveyance on the belt 58 is ensured by these rollers K. Also, these guides 5
9 and the roller 60 can be opened and closed integrally, making it easy to remove jammed paper from the belt 58 when a jam occurs.

A roller 61 for refeeding paper is disposed opposite the roller 57 on which a belt 58 is stretched, and a sensor 6 for detecting paper passage is provided.
2 and a pair of conveying rollers 63, the sheets conveyed by a bell) 58 are sent out one sheet at a time from the beginning toward the right in the figure, and then conveyed to a pair of rollers 64 and 43. are sequentially conveyed to the registration rollers 29 by tq. The paper is sent to the transfer section in synchronization with the image on the second side formed on the surface of the photoreceptor by the registration roller 29, and the image is transferred onto the second side. After the paper has been transferred, it is separated from the surface of the photoreceptor, the image is fixed by the fixing device 15, and the paper is conveyed to the switching guide 38. At this point, the guide 38 is at the dotted line position in the figure, so it is ejected out of the machine. The duplex device section 18 enables double-sided copying by repeating such operations.

and 67, the lowermost sheets are separated and pulled out one by one. Thereafter, the original O is turned in a U-turn so that the original surface is facing downward, and is then conveyed to a predetermined position over the original glass 9 by a belt 16 stretched over its entire length. After this, the image surface of the transported original O is
Optical: Scanned with 17% lO and copied to paper as described above. The scanned document is conveyed through the rollers 69 and 7o by the reverse rotation of the belt 16, and then discharged by the roller pair 75 onto the top of the documents stacked on the stacking table 65.

By repeating this operation, the originals stacked on the stacking table 65 can be copied in the correct order. Note that even in the case of double-sided originals, the belt 16, rollers 72, 73
, 74, 76.77° 78 and 79, it is possible to copy by inverting the front and back of the original and scanning the original image. Since such reversing operation is not directly related to the present invention, its explanation will be omitted.

The automatic stitching device (stapler) 20 stitches the copied sheets discharged from the copying machine 17. This stapler 20 is provided with a tray 81 for stacking sheets, and a connecting path 82 to another sheet processing device, such as a sorter. If binding is specified, the paper conveyance path will be
3, and the paper is stacked on the tray 84. When a predetermined number of sheets are stacked on this tray 84, the stapling device 85 is activated and a binding operation is performed. The bound paper bundle is placed on a loading table 86. After this, the next sheet to be bound can be received.

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t2t') fF 9 [&asl ip・ Typewriters and other devices are widely used today. These printing devices usually include a paper holder between the ink ribbon and the printing paper. This paper holder not only prevents the ink ribbon from contacting the printing paper and contaminating it when not printing, but also guides the printing paper so that it is wrapped around the platen five times.
Furthermore, it has functions such as reducing printing noise by preventing the printing paper from floating off the platen.
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λl;:crlR 硅concave culm is a ribbon provided by Ribbon Cassette Sen.
In the figure, it is lower than the position where it should be printed. This state is necessary for the operator to read printed characters etc. through the paper holder, and the ribbon is lowered than the printing position, and when printing, the ribbon is placed 6 mm above the paper holder.
Shift the printing line 5 o 7P is the printing paper,〃
is a carriage that slides parallel to the platen, and the digitized type wheel of 〃, the hammer of ν, the paper holder of 7J, the ribbon cassette of Tachi, etc. are each mounted on the carriage.

β is a ribbon guide provided on both sides of the type wheel to prevent the ribbon from coming into contact with the type wheel.

When printing on regular printing paper, use the paper holder
is in the position shown by the solid line, and the ribbon 74a runs in the longitudinal direction through the gap between the paper holder 73 and the ribbon guide 25, and is also shifted in the transverse direction.

If the paper paper is bent and comes into contact with the ribbon, the operator must use a separate holder reinforcement member 7.
It is designed so that it can be detachably attached to the Nmarta Z. In FIG. 6, the mounting location is the hammer t2, but this may also be the motor of the printer guide z5 or the type wheel (not shown in the figure). In this case, a claw is formed on the paper holder to prevent the reinforcing member 7 from coming off due to the movement of the paper.
Since it is only necessary to hold down the upper end, which has a large displacement, and eliminate the risk of the paper coming into contact with the ribbon, it does not require much precision in parts, mounting precision, etc.

Furthermore, since it is often necessary to read characters printed through the reinforcing member 27, it is preferable to make it from a transparent material.

FIG. 84 shows the cross section of FIG. 3, and the reinforcing member 27 can be easily attached to the nozzle 7Z from the entry direction by an operator.

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, / The above-mentioned infrared lamp for external infrared heating is preferably provided as necessary, but it can be used in combination as it can heat the resin liquid body and increase high frequency absorption.'
is good.

[Effects of the present invention]

The common effects of the present invention are excellent wear resistance, surface releasability, and sufficient surface and elastic properties of the resin layer.
It has excellent wear resistance and an extremely long life.

One surface of the rotating body of the present invention is considerably smooth, reducing the need for polishing.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of an embodiment of the method for manufacturing a rotating body of the present invention, and FIG.
The figure is an explanatory diagram of an embodiment in which the present invention is applied to a paper feed rotating body of an office machine, FIG. 3 is an explanatory diagram of an embodiment in which the present invention is applied to a platen of an IJ printer, and FIG. It is a cross-sectional explanatory view. 1 is an elastic roller 1. 12 is a rubber elastic body layer, and 13 is a resin layer. Procedural amendment (voluntary) February 25, 1985 Patent U filed on January 24, 1986 (2) 2. Name of invention Method for manufacturing an elastic rotating body and its elastic rotating body 3. Case of the person making the amendment Relationship with Patent applicant address 3-30-2 Shimomaruko, Ota-ku, Tokyo Name (100
)Representative of Canon Co., Ltd.Kakufuji MibeKukuru)4.Residence of agent: 3-30-25 Shimomaruko, Ota-ku, Tokyo 148, Specification subject to amendment Submit an engraving with no changes in content. . ) Description 10 Name of the invention Method for manufacturing an elastic rotating body and its elastic rotating body 2, Claims (1) When manufacturing a rotating body having a resin layer on an elastic layer, ``a method for producing an elastic body of rotation, #J is a resin body made by mixing fired resin materials.
11! L. The elastic layer should be baked on the elastic body while being maintained at a lower temperature than the resin body and heated to a high temperature at which the resin material can be fired, so that the resin layer is firmly adhered to the elastic body layer. A method for manufacturing an elastic rotating body characterized by: (2) A rotating body having a resin layer on an elastic layer, in which a resin body made by mixing an unfired resin material is applied on the elastic body, and then the first elastic body layer has a temperature lower than that of the resin body. What is claimed is: 1. An elastic rotating body characterized by being fired on an elastic body while being held at the bottom and heated to a high temperature at which a resin material can be fired, thereby forming a resin layer in close contact with the elastic body layer. 3. Detailed Description of the Invention (Field to which the Invention Pertains) The present invention relates to a general rotating body (belt, roller, etc.) having a resin layer on an elastic layer, and a method for manufacturing the same. NU1 This invention is applicable to rollers and belts that transport paper in printers, printers, and word processors.
Platenrote such as or double-sided #Lvc! The present invention relates to conveyance rotating bodies such as rollers and belts used in general business machines, such as rollers in conveyance systems used in [Uninvented Prior Art] Conventionally, in this field, nine rollers or belts equipped with a rubber surface layer or a resin surface layer have been used for conveying sheets and articles. These conveying rotating bodies are used to convey goods. In some cases, the surface became abraded and the desired conveyance could no longer be carried out. For example, rubber rollers may decrease in diameter by 1 or change in surface hardness after long-term use, resulting in poor conveyance or image transfer (platen rollers, etc.), and resin rollers have excellent wear resistance. However, since it does not show any elastic changes, if it becomes slightly worn after long-term use, it will cause transportation failure. In any case, there is no conventional conveyance rotating body such as a paper feed roller that satisfies the desired purpose and has a durability of more than 200,000 sheets2. It has been desired to create a material that has a non-adhesive property, has an appropriate surface hardness, and can stably make elastic contact with articles. CObject of the present invention] An object of the present invention is to provide a rotating body that achieves excellent durability not previously available through elasticity, surface non-adhesion, and surface hardness, and is capable of stable conveyance. It is in. C Summary of the Present Invention] In order to achieve the above object, the present invention focuses on a rotating body having a resin layer on an elastic layer. A resin body made by mixing an unfired resin material is applied onto the elastic body, and the second elastic body layer is coated with the elastic body while being maintained at a lower temperature than the resin body and heated to a high temperature at which the resin material can be fired. The present invention relates to a method for manufacturing an elastic rotating body and the elastic rotating body, characterized in that the resin layer is firmly adhered to the elastic layer by firing the resin layer on the elastic layer. Due to this feature, the present invention has excellent stability, and its durability is 300,000 to 500,000 sheets or more (with normal conveyance).
Further characteristics of the water 111IjI, which has a long service life of 1,000,000 sheets or more in some cases) and provides various advantages in transportation, will become clearer from the description of the examples. C Example of the present invention] A rubber roller having a desired shape is made by forming a vulcanized rubber layer on a core metal. Apply an unfired resin such as a dispersion (resin powder dispersed in water with a surfactant), enamel, or powdered resin to the surface of this rubber roller.
Apply to a uniform thickness over the entire length of the rubber roller using methods such as spray pJ1, electrostatic coating, powder coating, etc. Generally, a rubber roller coated with unfired resin needs to be dissipated to a temperature higher than the crystalline melting point of the resin. However, although rubber itself has rubber properties such as rebound and elasticity, when heated to high temperatures, it causes smoke and depolymerization.
Not only does it prevent the formation of a high-quality resin layer, but it also causes the rubber itself to lose its rubber properties. Therefore, overheating of the rubber layer causes the roller to lack the function of the rubber layer and the properties of the resin layer. . For these reasons, in the embodiments of the present invention, a firing method is adopted in which the entire length of the rubber roller is heated at a low temperature that does not cause smoke or depolymerization, while the resin coating layer is heated to a high temperature above its crystal melting point. did. Specifically, a method of rapidly heating the unfired resin on the surface while rapidly cooling the rubber layer from inside the core metal, or a method of rapidly heating the unfired resin on the surface, or
In addition to the electrically-proof heating method that utilizes the fact that the dielectric loss tangent of the dispersion (dispersion, enamel) itself is larger than the dielectric loss tangent of the rubber layer (see Figure 1), any method that meets this purpose is suitable for the present invention. It is something. By this method, a thermal gradient is essentially formed in the rubber in its thickness direction, but the temperature lower than the durable temperature of the rubber (e.g. 200°C or less) is applied to the unsintered resin, but the temperature is higher than its crystal melting point (e.g. A firing temperature of 250° C. or higher is applied for about 5 to 10 minutes. After this firing, the roller is rapidly cooled. This rapid cooling creates a baked resin surface layer on the rubber roller that exhibits sufficient resin properties with a low degree of crystallinity. It is formed in strong contact with the rubber roller and has the desired thickness. Therefore, in the elastic roller l, the lower layer rubber itself has the desired rubber properties almost the same as before the formation of the resin layer, the resin layer on the surface shows completely baked resin properties, and the adhesiveness of these layers is It is strong. Next, the elongation rate and tensile strength of the resin are determined by measuring the width of only the resin film from the roller after manufacturing. Take out a tanzak-shaped sample of 5-Otori x 100 layers in length, and hold it with a chuck distance of 20 mm,
It was measured by performing a tensile test at a tensile speed of 250 m for 1 minute. As a result, the properties of the resin were obtained as they were. The peel strength of the resin is determined by making cuts with a cutter knife at intervals of 10 dust in the circumferential direction of the roll, pulling the partially peeled resin layer with a tension meter, and taking the value of ll and large as the peel strength. For example, if fluororesin is used, the peel strength is 20
g/10 mm width or more was obtained. W41@ indicates a method for manufacturing a roller of the present invention. The device shown in FIG. 1 is a specific example of a heating method that uses both a dielectric heating device and infrared external heating.
High frequency (950MHz) generated from magnetron 105
~2450M)Iz) and a metal high-frequency reflection plate 103 connected to the waveguide.
It has a resin container 102 which can be opened and closed, two infrared lamps (upper and lower) for infrared external heating, and one reflective shade. Inside the resin $11102, there are a fan 1GO that generates an air flow inside the hollow of one elastic roller l, and a fan 101 that generates an air flow inside the container 102, which can be rotated by driving from a driving means outside the container. It is provided. This container can be opened and closed at the top and bottom about a fulcrum 10B, and has a handle 109 on the top and an arm 107 fixed on the bottom for positioning the flange IA of the elastic roller I, respectively. Reference numeral 110 denotes a control means for the device, which includes a driving means 104, a magnetron 105, and an infrared lamp 11! is operated for a predetermined time by a variable timer (not shown) depending on the closed state of the container and the input of a predetermined start signal. Since the elastic roller 1 has a rubber layer on the lower layer and a resin dispersion on the surface, a large amount of high frequency waves are absorbed in the dispersion, which has a higher dielectric constant than the rubber layer. Therefore, the resin dispersion is rapidly heated to a temperature higher than its firing temperature by heating with high frequency waves, infrared rays, and a constant temperature bath. At this time, since the rubber layer has a low high-frequency absorption rate, the temperature of the dispersion is not increased, and the heat is radiated to a considerably lower temperature. As a result, the rubber layer thickness and resin thickness of the above embodiment can be adjusted to 0.1 m.
■ to 10-■llllll11 to the specified thickness, the latter is 1μ
The present invention includes preferred embodiments having a predetermined thickness within the range of 50 IL to 50 IL. The above thickness is represented by the average thickness of each layer, and is preferably the minimum thickness. In the above embodiments, no adhesive layer is provided between the resin layer and the rubber layer, but the present invention also includes those provided with an adhesive layer. The resin layer in the above embodiments preferably contains water having a high dielectric constant, and resins such as silicone, polyimide, polyamide, and polyamideimide are used. The rubber layer in the above embodiments may be made of any rubber material whose durable temperature is below the melting point of the material of the s1 fat layer, such as ethylene propylene rubber or a mixture of this rubber with another rubber. be done. A specific application example will be explained. Figure 2 shows that the present invention is particularly effective.
A double-sided recording device will be described as a device whose application results in more stable effects. The apparatus shown in FIG. 2 has an image forming section that forms an image on paper using an electrophotographic copying method. This image forming process is well known and its explanation will be omitted. Also. On the large side, normal recording paper is used as the transfer material. In FIG. 2, one embodiment shows a copying machine 171 double-sided R11.
18, an automatic document circulation feeder (RDF) 19, and a paper stitching device (stapler) 20. The image forming process in the copying machine 17 is known as described above. A The document on the stacking table glass 9 is scanned by the moving optical system 10, and the reflected light is projected onto the photoreceptor 24 to form an electrostatic latent image, and the latent image can be converted into a toner image by the developing device 25. Visualize. The paper to which this toner image is transferred is
The paper is sent out from the paper feed tray 27 by the paper feed roller 28, and is aligned with the toner image on the photoreceptor z4 by the registration rollers 29. After this. The paper is transfer-charged! A toner image is transferred to the surface of the photoreceptor by I30.Then, the toner image is transferred to the photoreceptor surface by a belt 35 toward the constant rI device 15 at a distance of 2 from the surface of the photoreceptor which is transferred to the separation charger 14. In addition,! ! There are other areas around the light body other than those listed above! Known means such as a reach 32 necessary for ffi formation are provided. In the case of one-sided copying, the paper on which the toner image has been fixed after passing through the fixing device 15 is guided by this guide 38 and discharged to the sorter 20 since the switching guide 3B is located at the dotted line position in the figure. . However, Fq
In the case of double-sided copying, when copying to one side is completed, the switching guide 38 is at the position shown by the solid line in the figure, so this guide 3B moves the paper to the lower double-sided IIItI! Part 18
be led to. The duplex device section 18 receives the paper on which the first side has been copied by the copying machine 41117, and sends out the paper again when the next second side is to be copied. In addition. In this embodiment, a preliminary paper feed table 271 is provided,
When this paper feed tray 271 is selected in the main body of the copy Ia 17, the preliminary paper feed tray 271 is moved by the paper feed roller 42.
It is also possible to send out the paper P inside and convey it to the transfer section of the main body. The paper guided to the duplex unit 18 by the switching guide 3B and roller pair 40 described above is
A pair of rollers 44, 45 and 46 discharge the paper onto a tray 47 that is inclined upward to the right in the figure. At this time, the guide side l! which determines the position of the paper in the lateral direction (perpendicular to the conveyance direction) 4B aligns the paper in the lateral direction.Next, the rear end of the paper is pressed downward and dragged diagonally downward (to the left in the figure) by a rotating body 49 having elastic protrusions on the outer periphery. At this time 1
By means of a stop member 50 that suppresses the leading edge of the paper and allows only one sheet to pass through, and rollers 51 and 52 that cooperate with this stop member 150, the sheets stored in the tray 47 are shifted in rapid succession. send out, send out paper,
A belt 58 that contacts the roller 53 and the outer peripheral surface of the roller 53 and is stretched around the rollers 54, 55, 56°57.
It is then conveyed by making a U-turn and inverting the front and back sides. A guide 59 is disposed above the belt 58, and a guide 59 is provided above the belt 58.
A presser roller 60 is disposed opposite to the roller 56, sandwiching the paper 8, thereby ensuring reliable conveyance of the paper on the belt 58. In addition, these guides 59 and rollers 60 can be opened and closed as a unit, making it easier to remove jammed paper from the belt 58 when a jam occurs. A roller 81 for refeeding paper is disposed at a position opposite to the roller 57 on which the belt 5B is stretched, and cooperates with a sensor 62 for detecting paper passage and a pair of transport rollers 63 to feed the belt 5B.
The sheets conveyed by the rollers 8 are sent out one by one from the beginning toward the right in the figure, and are then conveyed to the registration rollers 29 through the pair of rollers 64 and 43 in sequence. The paper is sent to the transfer section in synchronization with the image on the second side formed on the surface of the photoreceptor by this registration roller 29,
The image is then transferred to the second side. After the paper has been transferred, it is separated from the surface of the photoconductor, the image is fixed by the fixing device 15, and the paper is conveyed by the switching guide 313t. At this point, the guide 38 is at the position indicated by the dotted line in the figure, so the one-sided duplex unit 18 that is ejected out of the al is a patent that features double-sided copying by repeating such operations. The automatic document circulation feeder (RDF) 19 is connected to the document loading table 6.
The document 0 stacked on the document 5 is rotated by belts 68 and 67 that rotate in different directions. The original 0 is separated one by one from the bottom and pulled out. After this, the original 0 is turned in a U-turn so that the original surface is facing downward, and then the original 0 is stretched over its entire length on the original glass 9. It is conveyed to a predetermined position by the belt 16. In this way, the image surface of the transported document 0 is scanned by the optical system 10 and copied onto paper as described above. The scanned original is conveyed through the gap between rollers 69 and 70 by the reverse rotation of the bell 16, and then discharged by a pair of rollers 75 onto the top of the originals stacked on the stacking table 65. By repeating this operation, the originals stacked on the stacking table 65 can be copied in the correct order. This also applies to shoulder-side manuscripts. Belt 16. Lotea 2, 73, 74.7B. 77, 78 and 79, copies can be made by scanning the original image by reversing the front and back sides of the accumulation. Since such reversing operation is not directly related to the present invention, its explanation will be omitted. Self! A 2+ binding device (stapler) 20 is used to staple copies of sheets discharged from the copying machine 17. This stapler 20 includes a tray 81 for stacking sheets. A connection path 82 to another paper processing device 2, such as a sorter, is provided. When binding is specified, the paper conveyance path is switched to a path toward the roller pair 83, and the paper is stacked on the tray 84. When a predetermined number of sheets are stacked on this tray 84, the stapling device 85 is activated and a binding operation is performed. The bound paper bundle is placed on a loading table 86. After this, the next sheet to be bound can be received. In FIG. 2, the rotating bodies to which the present invention is applied can be roughly divided into a paper feeding system rotating body, a conveying system rotating body after image formation, and a document conveying system rotating body. These rotating bodies, excluding the registration roller 29 and the belt, are rollers or rollers that are shorter than the width of one sheet of paper, and are used at a plurality of intervals to feed one sheet of paper. In this way, with multiple rotating bodies that perform one function, if one rotating body becomes worn or dirty, it will cause skewed paper feeding or poor feeding, so it is important to have excellent abrasion resistance and elasticity. From this point of view, it is preferable to apply the configuration of the elastic roller of the present invention. In particular, the paper feeding system rotating body 28, 42, 87, 68 has a large surface abrasion due to the pressurized contact with each paper, but by applying the present invention, stable feeding can be maintained over a long period of time due to its abrasion resistance and elasticity. can. Moreover, the transport system rotating body 1, 40.44-46. after image formation.
49,51. S2.53.58~61°63.64,8
0.83 tends to cause stains from fixed images and paper dust, but
By applying the present invention, this can be prevented and stable paper feeding can be achieved. The document conveyance system rotating body j8, 69 to 79 is
Although it is often contaminated by dirt on the original, etc., and conveyance failures are also likely to occur, this can be prevented by applying the present invention. Further, the conveying rotary body 35 between the fixing device and the transfer section (powder image forming section) causes many inconveniences during conveyance due to toner powder scattering and many other stains, but by applying the present invention, these problems can be avoided. can be prevented. Registration roller 29 also causes timing failure due to poor feeding, but this can be prevented by applying the present invention. Stable conveyance is improved. The present invention can be applied to the entire paper conveyance rotating body of a sheet feeder, and examples of application include the above-mentioned devices 1g, 19.20, etc. As another application example, the printing apparatus shown in FIGS. 3 and 4 will be explained. Today, typewriters and other devices are widely used. These printing devices usually include a paper holder between the ink ribbon and the printing paper. This paper holder prevents the ink ribbon from contacting the printing paper and smudging it when not printing. Many of them have functions such as guiding the printing paper so that it is wound around the platen, and further reducing printing noise by preventing the printing paper from floating off the platen. The elastic rotating body of the present invention is a platen sailor 1. 94m is a ribbon supplied from a ribbon cassette 94, and in the figure it is in a state lower than the printing position. This state is necessary for the operator to read printed characters etc. through the paper holder, and the ribbon is lowered than the printing position.
P is a printing paper, 90 is a carriage that slides parallel to the platen, 91 is a daisy type type wheel, 92 is a hammer, 93 is a paper holder,
Each of the 94 ribbon cassettes and the like is mounted on a caliper. Reference numeral 95 denotes ribbon guides provided on both sides of the type wheel to prevent the ribbon from coming into contact with the type wheel. When printing on normal printing paper, the paper holder 93
is at the position indicated by the solid line, and the ribbon 94m in the gap between the paper holder 93 and the ribbon guide 95 runs in its longitudinal direction and shifts in its lateral direction. When the paper holder 94 is bent and comes into contact with the ribbon,
This allows the operator to detachably attach a holder reinforcing member 97, which is provided separately, to the hammer 92. 3rd rI! In J, the mounting location is set to Han-F-92, but this may be the ribbon guide 95 or the motor of the type wheel 91 (not shown in the figure).In this case, the reinforcing member 97 is attached to the paper holder due to vibration. The claws are formed to prevent it from coming off. When the paper holder is warped, this reinforcing member 97
All you have to do is hold down the top edge of the paper, which has a large displacement, to eliminate the risk of the paper coming into contact with the ribbon. Parts precision, installation precision, etc. are not required so much. In addition, since it is often necessary to read characters printed through the reinforcing member 97, Xl! It is preferable to use transparent materials. FIG. 4 shows a cross section of FIG. 3, and the reinforcing member 97 can be easily attached to the hammer 92 from direction A by an operator. This platen roller l receives pressure from the hammer 92 and also stops and feeds the printing paper P m. For this reason, it is necessary for the roller 1 to have both durability and elasticity on one surface, and the present invention satisfies these conditions.Moreover, the surface has resin properties and is not in a state where the elasticity of rubber has deteriorated. It has the advantage that the resin surface can be made thinner. The invention is particularly effective for general office equipment. It is also effective for general paper conveying rotors. It is preferable to provide the above-mentioned infrared lamp for external infrared heating, if necessary, but it is preferable to use it together because it can heat the resin liquid body and increase the high frequency absorption property. [Effects of the present invention] The common effects of the present invention are excellent wear resistance, surface release properties, and sufficient surface and elastic properties of the resin layer.
It has excellent wear resistance and an extremely long life. The rotating body of the present invention has a considerably smooth surface. The need for polishing can be reduced. 4. Brief explanation of the drawings Fig. 1 is an explanatory diagram of an embodiment of the manufacturing method of a rotating body of the present invention;
The figure is an explanatory diagram of an embodiment in which the present invention is applied to a paper feed rotating body of an office machine, Figure 3 is an explanatory diagram of an embodiment in which the present invention is applied to a printer platen, and Figure 4 is a cross-sectional diagram of Figure 3. It is a diagram. 1 is an elastic roller 1. 12 is a rubber elastic body layer, and 13 is a resin layer. Applicant Canon Inc. Yosha I Co., Ltd.
varnish, tee

Claims (2)

[Claims] (1) When manufacturing a rotating body having a resin layer on the elastic layer, a resin liquid made by mixing an unfired resin material is applied onto the elastic body, and the elastic layer is coated with a resin liquid mixed with an unfired resin material. A method for manufacturing an elastic rotating body, which comprises firing the elastic body while maintaining the resin material at a low temperature and heating it to a high temperature at which the resin material can be fired, thereby forming a resin layer in close contact with the elastic body layer. (2) A rotating body having a resin layer on an elastic layer, in which a resin liquid made by mixing an unfired resin material is coated on the elastic body, and then the elastic body layer has a temperature lower than that of the resin liquid. What is claimed is: 1. An elastic rotating body characterized by being fired on an elastic body while being held at the bottom and heated to a high temperature at which a resin material can be fired, thereby forming a resin layer in close contact with the elastic body layer.