JP3044649U - Feed roller - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a feed roller hardly causing a feed error. SOLUTION: An outer peripheral portion 4 of a feed portion 3 of a feed roller 1 is made of stainless steel, and the outer peripheral portion 4 is used as a base metal.
The artificial diamond particles 5, 5,... Having a particle size in the range of No. 200 to No. 230 are electrodeposited by nickel plating on the outer peripheral surface.
The surface of the feed portion 3 was formed rough so that a part of the projection protruded to the outside.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a feed roller, particularly for business or home use, such as a monochrome or color copier, a fax machine, a printer for monochrome or color computers, a word processor, a photographic image printing machine, a photo developing / enlarging machine, Used for monochrome or color printing machines, automatic ticket vending machines, automatic ticket gates, mail sorting machines, etc., and cut sheets or roll sheets of plain paper, thermal paper, thermal transfer paper, label paper, negative paper, film sheets, etc. The present invention relates to a feed roller suitable for feeding film sheets, banknotes, traffic tickets, commuter passes, postcards, sealed letters and the like.

[0002]

[Prior art]

 For example, printers for business or home use, such as printers for monochrome or color computers, word processors, photographic images, etc., take out cut sheets such as plain paper from the storage case and cut sheets taken out from the storage case. Numerous feed rollers are used to feed the printing mechanism and discharge the cut sheet after printing. The conventional feed roller is formed, for example, by fitting a cylindrical feed portion to a shaft, and the feed portion is formed of a member such as rubber, plastic, or ceramics, or the outer peripheral surface is painted. It is rough. When the feed section rotates while being pressed against the cut sheet, a frictional force acts between the feed section and the cut sheet to feed the cut sheet.

[0003]

[Problems to be solved by the invention]

 However, in the conventional feed roller, the frictional force acting between the outer peripheral surface and the cut sheet is originally not so strong due to the material of the feed portion, and the frictional force is quickly reduced due to abrasion with time. . For this reason, the feed roller slipped on the cut sheet and could not feed the cut sheet correctly, resulting in a printing failure or the cut sheet being jammed in the printer. In particular, when printing on a film sheet in a printer for printing photographic images, since the film surface is smooth, the feed roller tends to slip, and the printed image tends to be unclear. The present invention has been made in view of the above-described problems of the related art, and has as its object to provide a feed roller that is less likely to cause a feed error.

[0004]

[Means for Solving the Problems]

 The feed roller of the present invention uses the feed portion of the feed roller as a base metal and uniformly deposits diamond particles on the outer peripheral surface of the feed portion by plating, with a portion of each diamond particle protruding outside from the plated surface. In this way, a rough surface is formed on the surface of the feeding section. As a result, a large number of diamond particles protruding from the surface of the feed portion dig into the surface of the object to be fed, so that a large frictional force is generated between the diamond and the object to be fed, and the feed roller slips against the object to be fed. No feeding error occurs. In addition, the diamond particles do not wear out even after a lapse of time, and a stable feeding operation can always be performed.

[0005]

[Embodiment of the invention]

 The feed roller of the present invention uses the feed portion as a base metal, and uniformly deposits diamond particles on the outer peripheral surface of the feed portion by plating, with a portion of each diamond particle protruding from the plated surface to the outside. A rough surface was formed on the surface of the feeding portion. The feed roller can be composed of, for example, a roller shaft and a cylindrical body that is detachably or irremovably fitted to the roller shaft and whose outer peripheral surface is pressed against the object to be fed. Further, as another example, the roller shaft and a cylindrical body that is integrated with the roller shaft and whose outer peripheral surface is pressed against an object to be fed may be used. In the former case, the cylindrical body is the feed section, and in the latter case, the cylindrical body is the feed section. The roller shaft and the cylindrical body or columnar shape may be formed of the same material or different materials. Of these configurations, the cylindrical body or the cylindrical body itself excluding the roller shaft may be used as the feed roller. In this case, the feed roller and the feed unit are the same.

[0006] The entire or outer peripheral portion of the feed portion may be made of a rigid and conductive metal material such as stainless steel, carbon steel, and free-cutting steel. The diamond particles may be either natural diamonds or artificial diamonds, and have a particle size in the range of No. 30 to No. 3000 (the range of passing through No. 30 and not passing through No. 3000) to an appropriate size. You just have to select For example, particles having a size that passes through the number 200 and does not pass through the number 230 or particles that pass through the number 400 and do not pass through the number 500 are used. The feeding portion may be plated with diamond particles by either electroplating or chemical plating (electroless plating). In addition to the electrodeposition using nickel plating, the electrodeposition may be performed using zinc plating, or may be performed using another plating metal. Prior to electrodeposition, if the surface of the diamond particles is subjected to nickel plating or zinc plating by electroplating or chemical plating, electrodeposition can be performed smoothly.

[0007] When the electrodeposited diamond particles are formed so that about 2/3 to 1/5 of the diamond particles protrude from the plating surface to the outside, high adhesion of the diamond particles to the surface of the feed portion is ensured. However, a high frictional force can be exerted when pressed against the object to be fed. Although the size of the feeding portion is not particularly limited, for example, if the diameter is about 1 mm to 200 mm and the length is about 5 mm to 3000 mm, the electrodeposition can be easily performed.

[0008]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a feed roller used in a printer for printing photographic images for business use or home use. The object to be fed is a film sheet as negative paper. The feed roller 1 includes a shaft 2 and a cylindrical feed portion 3 detachably fitted to the shaft 2. At least the outer peripheral portion 4 of the feed portion 3 is made of stainless steel. The feed portion 3 is made of nickel as the outer peripheral portion 4 as a base metal and nickel-plated or zinc-coated with artificial diamond particles 5, 5,... Electroplated by plating.

As shown in FIG. 2, approximately 2/3 to 1/5 of each of the diamond particles 5, 5,... is there. According to the feed roller 1 configured as described above, when the feed portion 3 is pressed against a film sheet (not shown) while the artificial diamond particles 5, 5,. High friction force can be exerted. Therefore, even if the surface of the film sheet is smooth, the feeding section 3 can perform the feeding operation without slipping with respect to the film sheet, and the printed image becomes unclear or the sheet is jammed. There is no. Moreover, the artificial diamond particles 5, 5,... Do not wear out even after long-term use, so that a stable feeding operation can be performed forever.

In the above-described embodiment, a feed roller used in a printer for printing photographic images has been described as an example. However, the present invention is not limited to this, and it is suitable for business use or home use. It can be used for color copiers, fax machines, printers for monochrome or color computers, word processors, photo development / enlargement machines, monochrome or color printing machines, automatic ticket vending machines, automatic ticket gates, mail sorting machines, etc. It is possible to send objects such as cut sheets or roll sheets such as plain paper, thermal paper, thermal transfer paper, label paper, negative paper, and film sheets, film sheets, banknotes, traffic tickets, commuter passes, postcards, and postcards. Are applicable.

[0011]

[Effect of the invention]

 According to the present invention, since a large number of diamond particles protruding from the surface of the feed portion dig into the surface of the object to be fed, when the feed portion is pressed against the object to be fed, there is a large gap between the feed portion and the object to be fed. When the object to be fed is paper, as well as a smooth surface such as a film sheet, the feeding roller does not slip on the object to be fed, and a feeding error occurs. Absent. In addition, the diamond particles do not wear out even after a lapse of time, and a stable feeding operation can always be performed.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a feed roller according to an embodiment of the present invention, with a part thereof omitted.

FIG. 2 is an enlarged cross-sectional view of FIG. 1 with a part omitted;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Feed roller 2 Shaft 3 Feed part 4 Outer periphery 5 Artificial diamond particle 6 Plating surface

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[Procedure amendment]

[Submission date] July 16, 1997

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 2

Claims (4)

[Utility model registration claims] 1. A feeding part of a feed roller is used as a base metal, and diamond particles are uniformly electrodeposited on an outer peripheral surface of the feeding part by plating. A feed roller having a roughened surface formed on the surface of the feed section. 2. The feed roller according to claim 1, wherein the plating metal is nickel or zinc. 3. The particle size of the diamond particles is 30 to 30.
3. The feed roller according to claim 1, wherein the feed roller is appropriately selected from the range of No. 00. 4. The feed roller according to claim 1, wherein the diamond particles have a portion corresponding to about 2/3 to 1/5 of the diamond particles protruding from the plating surface to the outside. .