JP2001326786A - Guide roll for image reading apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a guide roll for an image reading apparatus which reads an image while securing the detection precision of the movement distance of an image reading means without damaging a subject regardless of disuse of a protection sheet. SOLUTION: A groove part 32 is formed along the outer peripheral face of a roll member 21 made of a non-deforming material, and a rubber member 31 is buried along this groove part 32 so that its outer peripheral part may project from the outer peripheral face of the roll member 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide roller in an image input device, and more particularly, to a roller capable of rolling on a subject without damaging the subject and accurately detecting a moving distance of image reading means. The present invention relates to a guide roller in an image input device suitable for an image input device by manual scanning.

[0002]

2. Description of the Related Art Conventionally, as an image input apparatus by manual scanning, one disk-shaped or cylindrical guide roller made of a metal material is provided, and the image input apparatus is moved by rolling the guide roller on a subject. In the meantime, there is known an image input device which reads an image from a subject by a line image sensor as image reading means and grasps a moving distance of the line image sensor by the guide roller. In this image input device, the guide roller is manually rolled on the subject to move the image input device in one direction, whereby the line image sensor performs one scan in one direction to read an image from the subject, During this time, the rotation number of the guide roller is measured by a rotation number measuring means such as an encoder, and the read image data and the measured rotation number of the guide roller are connected to a computing unit or image input device provided in the image input device by a cable or the like. The data is input to the connected external arithmetic device, and thereafter, the rotation speed of the guide roller is converted into position data corresponding to the moving distance of the line image sensor by the arithmetic unit or the arithmetic device, and the line is firstly determined based on the position data. It realizes image input by performing image synthesis processing to restore the image data input from the image sensor to the original image. That.

On the other hand, there is also known an image input device by manual scanning that can freely move not only in one direction but also in an arbitrary direction on a subject. Unlike an image input apparatus having a single guide roller in the shape of a circle, the image input apparatus includes two independently rotatable guide rollers. Hereinafter, this image input device will be described with reference to FIGS. 8, 9, and 10. FIG.

As shown in FIG. 8, an image input device 1 includes a line image sensor 10 as image reading means for optically reading an image from a subject, and on both sides thereof, the image input device 1 rolls over the subject. Two guide rollers 11 for moving the apparatus and for grasping the moving distance of the line image sensor 10 are independently rotatably mounted on a rotating shaft 25. The guide roller 11 includes a roller member 21 made of a metal material and a saw-toothed roller 22 attached thereto.
As shown in FIG. 10, the rotating shaft 25 is connected to the gear portion 23 by a connecting pin 26 provided on the gear portion 23 together with the saw-tooth roller 22, and the bearing portion 24 interposed between the saw-tooth roller 22 and the gear portion 23. Is mounted, whereby the roller member 21, the saw-toothed roller 22, and the gear portion 23 are rotated by a common shaft. The saw-toothed roller 22 has a configuration in which the roller member 21 is a line image sensor 10.
When rolling on the subject 2 to grasp the moving distance of
This is provided to prevent the roller member 21 from slipping on the subject 2 and to be displaced from the direction in which the roller member 21 is to be moved. Are formed such that at least one or more of them contact the subject 2 during one rotation of the roller member 21.

A gear portion 23 connected to the roller member 21 by a rotating shaft 25 meshes with the gear train 13, and transmits the rotation of the roller member 21 to a magnetic ring (not shown) via the gear train 13 to transmit the magnetic ring. Is rotated, and the number of rotations of the magnetic ring is detected by a number-of-rotations measuring means such as a magnetic encoder 15, thereby measuring the number of rotations of the roller member 21. When an optical encoder is used as the encoder 15, the rotation of the roller member 21 is transmitted to the disk with slits via the gear train 13 to rotate the disk with slits. measure.

The line image sensor 10 and the encoder 15 are connected to a computing unit provided in the image input device 1 or a computing device 18 such as an external personal computer connected to the image input device 1 by a cable 17 or the like.

In the above configuration, when an image is input from the subject 2 to the computing unit or the computing device 18, the subject 2
The image input device 1 is mounted thereon, and the two roller members 21 are respectively brought into contact with the subject 2 together with the saw-toothed roller 22. Into the subject 2 and move the image input device 1 in an arbitrary direction in which an image is to be read.
0 is read in an arbitrary direction in which the image is to be read, and the image is read from the subject 2. The rotation of the roller member 21 during that time is transmitted to the magnetic ring via the gear portion 23 and the gear train 13 to rotate the magnetic ring. Then, the rotation speed of the magnetic ring is detected by the magnetic encoder 15, and the rotation speed of the roller member 21 is thereby measured. Next, the read image data and the measured number of rotations of the roller member 21 are input to a computing unit provided in the image input device 1 or an external computing device 18 connected to the image input device 1 by a cable 17 or the like. Thereafter, the rotation speed of the roller member 21 is converted into position data corresponding to the moving distance of the line image sensor 10 by an arithmetic unit or an arithmetic unit 18, and the position data and the image data previously input from the line image sensor 10 are converted. Is subjected to an image synthesizing process by an image synthesizing means, and the original image is restored on a storage device or a display screen provided in the arithmetic unit 18, whereby the image input is completed.

The image input apparatus 1 is to move the image input apparatus 1 by rolling with the two independently rotatable guide rollers 11 securely contacting the subject 2.
While the line image sensor 10 can scan in any direction, there is a possibility that a rotation error occurs due to rattling or slippage of the guide roller 11 or a deviation occurs in a direction perpendicular to the moving direction of the guide roller 11, As a result, the position data may not be detected with high accuracy, and there is a possibility that accurate image synthesis processing may not be performed. However, since the serrated roller 22 is provided alongside the guide roller 11 as described above, the above-mentioned concern due to the use of two independently rotatable guide rollers 11 is resolved, and the image formed by the guide roller 11 is eliminated. Accuracy of detecting the moving distance of the reading means can be secured.

As described above, according to the image input apparatus 1 including the two independently rotatable guide rollers 11 provided with the saw-toothed rollers 22, the two guide rollers 11 contact the subject 2 respectively. As long as the line image sensor 10 scans in one direction, the scanning can be freely performed in any direction by wiping the window glass by wiping the window while ensuring the detection accuracy of the moving distance of the image reading unit. be able to.

[0010]

However, in the above-described image input apparatus having two independently rotatable guide rollers, since the serrated roller is used in combination, the minute projection formed on the serrated roller is used. However, the bite marks are left on the subject as scratches, and when reading a valuable subject or the like, the reading must be performed using a protective sheet or the like.

Accordingly, the present invention is to solve the above-mentioned problem. First, the present invention ensures the detection accuracy of the moving distance of the image reading means without damaging a subject without using a protective sheet. Second, it is an object of the present invention to provide a guide roller in an image input device capable of reading an image by noting that the subject is not damaged according to the type of the subject and that the moving distance of the image reading means is accurately determined. It is an object of the present invention to provide a guide roller in an image input device capable of reading an image by selecting any one of detection.

[0012]

According to one aspect of the present invention, there is provided a guide roller comprising a roller member which rolls on a subject, and a guide roller which rolls on the roller member. An image reading means for reading an image from a subject by moving the image reading means, and a guide roller in an image input apparatus including a rotation number measuring means for measuring the rotation number of the roller member to detect a moving distance of the image reading means, The roller member is formed from a non-deformable material, a groove is formed along the outer peripheral surface, and a rubber member is embedded along the groove so that the outer peripheral portion protrudes from the outer peripheral surface of the roller member. And

According to the first aspect of the present invention, since the rubber member is embedded in the outer peripheral surface of the roller member so as to project therefrom, the outer peripheral portion of the rubber member protruding from the outer peripheral surface of the roller member is provided. Will roll on contact with the subject, so that the roller member does not slip or shift from the direction in which it should be moved, unlike a conventional roller member made of a metal material, and does not damage the subject. Absent. In addition, since the outer peripheral portion of the rubber member protruding from the roller member comes into contact with the subject, by selecting the cross-sectional shape of the outer peripheral portion of the rubber member, the number of revolutions of the roller member can be reduced as compared with the case where a saw-tooth roller is additionally provided. It is possible to measure with comparable accuracy, and thus to accurately detect the moving distance of the image reading means, thereby ensuring the accuracy of the position data corresponding to the moving distance required for image synthesis. Can be.

According to a second aspect of the present invention, in the first aspect of the present invention, a saw-toothed roller which rotates coaxially with a side of a roller member in which a rubber member is embedded is provided. And

According to the second aspect of the present invention, since a saw-toothed roller rotating coaxially with the side of the roller member in which the rubber member is embedded is provided along with the side surface, the outer peripheral surface of the roller member is brought into contact with a subject and an image is formed. By changing the degree to which the input device is pressed against the subject, the teeth of the saw-toothed roller can bite into the subject to generate a high grip force. Conversely, the teeth of the saw-toothed roller can bite into the subject. The rubber member of the roller member in which the rubber member is embedded can be brought into contact with the subject without causing the rubber member to be buried. Therefore, according to the type of the subject, the image can be read by giving priority to either not damaging the subject or accurately detecting the moving distance of the image reading unit.

According to a third aspect of the present invention, in the second aspect, the outer diameter of the saw-toothed roller is smaller than the outer diameter of the rubber member embedded in the roller member, and It is characterized in that it is larger than the outer diameter of.

According to the third aspect of the present invention, the outer diameter of the serrated roller is smaller than the outer diameter of the rubber member embedded in the roller member and larger than the outer diameter of the roller member. Is strongly pressed against the object, the rubber member is deformed, the outer peripheral surface of the roller member comes into contact with the object, and the teeth of the saw-toothed roller bite into the object, so that a high gripping force can be generated. on the other hand,
When the load applied to the image input device is reduced, the amount of deformation of the rubber member embedded in the roller member is small, the rubber member comes into contact with the subject, and the teeth of the saw-toothed roller do not directly contact the subject, so that the surface of the subject is not affected. Does not hurt.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the rubber member embedded in the roller member is provided on both sides or one side of the rubber member along the outer peripheral surface of the roller member. A concave portion is formed.

According to the fourth aspect of the present invention, since the concave portion is formed along the outer peripheral surface of the roller member on both sides or one side of the rubber member embedded in the roller member, the operator presses the image input device against the subject. Then, when the outer peripheral portion of the rubber member protruding from the outer peripheral surface of the roller member is deformed by the load, the deformed portion is accommodated in the concave portion. Therefore, even if the outer peripheral portion of the rubber member protruding from the outer peripheral surface of the roller member is deformed and the diameter of the rubber member changes, the outer peripheral portion of the rubber member is housed in the recess, and the outer peripheral portion of the roller member is replaced with the rubber member. Since the surface itself contacts the subject, the number of rotations of the roller is measured based on the diameter of the roller member, and it is possible to prevent a detection error of the moving distance of the image reading means due to a change in diameter caused by deformation of the rubber member.

According to a fifth aspect of the present invention, in the fourth aspect of the invention, the concave portion is formed by leaving a flat portion on the outer peripheral surface of the roller member. According to the invention described in claim 5, since the concave portion is formed leaving a flat portion on the outer peripheral surface of the roller member, the roller member can always be brought into contact with the subject even if the rubber member is deformed,
Accuracy of detecting the moving distance of the image reading means can be ensured.

According to the invention described in claim 6, in the invention described in claim 4 or 5, the volume of the concave portion protrudes from the outer peripheral surface of the roller member of the rubber member embedded in the roller member. It is characterized by being larger than the volume of the part.

According to the invention described in claim 6, the volume of the concave portion is made larger than the volume of the portion of the rubber member embedded in the roller member which protrudes from the outer peripheral surface of the roller member. The roller member can always be brought into contact with the object by accommodating the projecting portion, and the accuracy of detecting the moving distance of the image reading means can be ensured.

According to a seventh aspect of the present invention, there is provided a guide roller comprising a roller member rolling on a subject, image reading means for reading an image from the subject by moving along with the rolling of the roller member, A guide roller in an image input device including a rotation speed measurement unit that measures the rotation speed of the roller member to detect a moving distance of the image reading unit,
The roller member is formed from a non-deformable material, and an auxiliary roller formed on the side surface of the non-deformable material and rotating coaxially with the roller member in contact with the roller member is provided. A notch is formed along the outer peripheral portion on the side surface in contact with the member, and the outer peripheral portion of the rubber member projects along the notch portion from the outer peripheral surface of the roller member, and one side surface of the rubber member contacts the roller member. It is characterized by having been provided as follows.

According to the seventh aspect of the present invention, the roller member is provided with an auxiliary roller and a notch is formed in the auxiliary roller so that the outer peripheral portion of the rubber member projects from the outer peripheral surface of the roller member. Since the outer peripheral portion of the rubber member protruding from the outer peripheral surface of the roller member comes into contact with the subject and rolls, the roller member slides or moves like a conventional roller member made of a metal material. There is no deviation from the intended direction and no damage to the subject. Moreover, since the rubber member is provided on the auxiliary roller such that the side surface thereof is in contact with the roller member, the rubber member is sandwiched between the roller member and the auxiliary roller, and the deformation of the rubber member in the axial direction is suppressed. Therefore, the rotation speed of the roller member can be measured with an accuracy comparable to the case where the saw-toothed roller is also provided, and the moving distance of the image reading means can be accurately detected. The accuracy of the position data corresponding to the moving distance required for the above can be secured.

According to an eighth aspect of the present invention, in the invention of the seventh aspect, a rubber member is provided by injection-molding a rubber-like material into a notch formed in the auxiliary roller. Features.

According to the invention as set forth in claim 8, since the rubber member is provided by injection-molding a rubber-like material in the notch formed in the auxiliary roller, the rubber member provided in the notch and the auxiliary roller are provided. As a result, the guide roller can be formed simply by connecting the auxiliary roller to the roller member.

According to a ninth aspect of the present invention, in the invention of the seventh aspect, an annular locking groove concentric with the auxiliary roller is formed in a cutout formed in the auxiliary roller. A locking portion protruding from the rubber member on the side opposite to the roller member is formed on the rubber member so as to be locked in the annular locking groove, and the locking portion is locked in the annular locking groove.

According to the ninth aspect of the present invention, an annular locking groove is formed in the notch formed in the auxiliary roller, and a locking portion is formed in the rubber member to be locked in the annular locking groove. Since the locking portion is locked in the annular locking groove, the contact area between the auxiliary roller and the rubber member is increased, and the adhesion between the auxiliary roller and the rubber member is increased. The rubber member is fixed to the auxiliary roller by being locked in the stop groove, thereby preventing the rubber member from falling off from the auxiliary roller even when an external force is applied to the rubber member.

According to a tenth aspect of the present invention, in the ninth aspect of the present invention, a rubber member is formed by injection-molding a rubber-like material into the annular locking groove formed in the notch. It is characterized by the following.

According to the tenth aspect of the present invention, since the rubber member is formed by injection-molding a rubber-like material into the annular locking groove formed in the notch, the locking portion is easily formed in the rubber member. Therefore, the adhesion between the rubber member and the auxiliary roller can be further ensured.

According to an eleventh aspect of the present invention, in the invention described in the ninth aspect, the protrusion is formed integrally with the engaging portion and protrudes toward the roller member. An annular recess concentric with the roller member is formed on a side surface of the roller member that comes into contact with the auxiliary roller, and the protrusion is fitted into the annular recess.

According to the eleventh aspect of the present invention, the engaging portion is formed with a projecting portion which is integral with the engaging member and protrudes toward the roller member, and a roller is provided on a side surface of the roller member which comes into contact with the auxiliary roller. Since the annular recess is formed concentrically with the member and the projection is fitted into the annular recess, the adhesion between the auxiliary roller and the roller member can be improved, and
Since the annular concave portion is formed in an annular shape, i.e., a circumferential shape, when the auxiliary roller and the roller member are connected and assembled, there is no need to align the annular concave portion and the protruding portion in the circumferential direction. can do.

According to a twelfth aspect of the present invention, in the eleventh aspect, the protrusion is formed integrally with a rubber member by injection molding a rubber-like material.

According to the twelfth aspect of the present invention, since the protrusion is formed integrally with the rubber member by injection-molding a rubber-like material, the protrusion can be easily formed, and even if an external force is applied. There is no possibility that the protruding portion is separated from the rubber member.

According to a thirteenth aspect of the present invention, in the first aspect of the present invention, the outer diameter of the roller member is smaller than the outer diameter of the rubber member, and the outer peripheral surface is smaller. It is characterized by being flat.

According to the thirteenth aspect of the present invention, even if a load is applied in the radial direction of the auxiliary roller to deform the rubber member, the object comes into contact with the outer peripheral surface of the roller member so that the amount of deformation of the rubber member is constant. , The accuracy of detecting the moving distance of the image reading means can be ensured.

According to a fourteenth aspect of the present invention, in any one of the above aspects, the outer peripheral portion of the rubber member has a convex sectional shape. According to the invention described in claim 14, since the cross-sectional shape of the outer peripheral portion of the rubber member is made convex, when the roller member rolls on the subject, the outer peripheral portion of the rubber member comes into point contact with the subject, and Accordingly, the number of rotations of the roller member can be accurately measured.

The invention described in claim 15 is characterized in that, in the invention described in claim 14, the convex shape is a semicircular shape. According to the invention described in claim 15, since the cross-sectional shape of the outer peripheral portion of the rubber member is made semicircular, when the roller member rolls on the subject, the outer peripheral portion of the rubber member comes into point contact with the subject, Thereby, the number of rotations of the roller member can be accurately measured.

The invention according to claim 16 is characterized in that, in the invention described in any one of the above-mentioned claims, the rubber-like material constituting the rubber member has a rubber hardness of 60 ° to 80 °. And

According to the invention described in claim 16, the rubber hardness of the rubber-like material constituting the rubber member is 60 ° to 80 °.
°, moderate rubber elasticity is exhibited, and the detection accuracy of the moving distance of the image reading means can be secured.

According to a seventeenth aspect of the present invention, in any one of the above-mentioned inventions, a gear portion for transmitting the rotation of the roller member to another rotating body is connected to the roller member. It is characterized by having done.

According to the seventeenth aspect of the present invention, since the gear portion for transmitting the rotation of the roller member to another rotating body is connected to the roller member, the rotation of the roller member is controlled by the gear portion. The gears are transmitted to a rotating body such as a gear train in which the gears are engaged, whereby the number of rotations of the roller member is measured by the number-of-rotations measuring means, and the moving distance of the image reading means required for image synthesis can be detected.

The guide roller of the present invention can be preferably used in a manual scanning image input apparatus having two independently rotatable guide rollers. In the present invention, as the rubber-like material constituting the rubber member, for example, a synthetic rubber such as nitrile rubber, silicon rubber, fluorine rubber, ethylene propylene rubber, or a thermoplastic elastomer is used. When the rubber member is provided on the auxiliary roller by injection molding a rubber-like material, an injection-moldable thermoplastic elastomer is used.

The rubber hardness of these rubber-like materials is 60 °
Those having a relatively hard rubber hardness of about 80 ° are preferred. If the rubber hardness is less than 60 °, the rubber elasticity tends to be too large and tends to be excessively deformed, while if it exceeds 80 °, the rubber elasticity is too small and sufficient rubber elasticity may not be obtained.

Here, the rubber hardness is JIS-K-62.
It is measured with a type A durometer hardness tester according to the 53 test method. Examples of the non-deformable material constituting the roller member or the auxiliary roller include iron, aluminum, metal materials such as alloys of various metals, and synthetic resins such as polyester, polyamide, polyethylene, and polypropylene. It is also possible to use a rubber-like material having a hardness higher than the above-mentioned rubber hardness.

In the present invention, when the rubber member is provided on the auxiliary roller, the shape of the notch formed in the auxiliary roller may be any shape as long as it can hold the rubber member. , A step having an inclined surface, and an arc-shaped step. In addition, a groove such as an annular locking groove concentric with the auxiliary roller can be formed in the notch, and a protruding portion such as a locking portion for fitting and locking in these grooves can be formed in the rubber member. It can also be formed.

[0047]

Embodiments of the present invention will be described below with reference to the drawings. Elements having substantially the same functions, including FIGS. 8, 9, and 10 showing the above-described conventional techniques, are denoted by the same reference numerals.

(Embodiment 1) First, a guide roller of the present invention in which a rubber member is embedded on the outer peripheral surface of a roller member will be described with reference to FIG.

FIG. 1 is a sectional view showing an example of a guide roller of the present invention in which a rubber member is embedded on the outer peripheral surface of a roller member. The guide roller 20 is used for die-casting of a metal material such as aluminum or for molding a synthetic resin. The roller member 21 and the rubber member 31 are formed. The outer peripheral surface of the roller member 21 is flat, and a groove 32 is formed along the outer peripheral surface at the center in the thickness direction. On the other hand, the rubber member 31 has a ring-shaped external shape, the cross-sectional shape of the outer peripheral portion is a semicircular shape, and the outer peripheral portion is formed on the roller member 21 so as to protrude from the outer peripheral surface of the roller member 21. It is buried in the groove 32.

The guide roller 20 is connected to the gear portion 23 by a connecting pin 26 projecting from the gear portion 23 so as to transmit the rotation of the roller member 21 to the gear portion 23, and the rotating shaft mounted on the bearing portion 24. The gear 25 rotates around the center together with the gear 23.

The roller member 21 connected to the gear portion 23 is replaced with a roller member 21 having a conventional saw-toothed roller 22 as shown in FIG. It is attached to the image input device 1 shown in FIGS. That is, the guide rollers 20 of the present invention are independently rotatably mounted on both sides of the line image sensor 10 together with the gears 23, and the gears 23 are engaged with the gear train 13 shown in FIG. 13, the rotation of the roller member 21 is transmitted to a magnetic ring (not shown) to rotate the magnetic ring, and the rotation speed of the magnetic ring is detected by the magnetic encoder 15, whereby the rotation speed of the roller member 21 is determined. The line image sensor 10 and the encoder 15 are respectively connected to a computing unit provided in the image input device 1 or a computing device 18 such as an external personal computer connected to the image input device 1 by a cable 17 or the like. It is connected.

In the above configuration, when an image is input from the subject 2 to the arithmetic unit or the arithmetic unit 18,
The image input device 1 is mounted thereon, and the outer peripheral portions of the rubber members 31 embedded in the roller member 21 are respectively brought into contact with the subject 2. The input device 1 is moved in an arbitrary direction in which an image is to be read, whereby the line image sensor 10 is scanned in an arbitrary direction in which an image is to be read, and an image is read from the subject 2. The rotation is transmitted to the magnetic ring through the gear portion 23 and the gear train 13 to rotate the magnetic ring, and the rotation speed of the roller member 21 is measured by detecting the rotation speed of the magnetic ring by the magnetic encoder 15. Next, the read image data and the measured roller member 21
Is input to an arithmetic unit provided in the image input device 1 or an external arithmetic device 18 connected to the image input device 1 by a cable 17 or the like. Thereafter, the rotation speed of the roller member 21 is converted into position data corresponding to the moving distance of the line image sensor 10 by an arithmetic unit or an arithmetic unit 18, and the position data and the image data previously input from the line image sensor 10 are converted. Is subjected to an image synthesizing process by an image synthesizing means, and the original image is restored on a storage device or a display screen provided in the arithmetic unit 18, whereby the image input is completed.

According to the present embodiment, since the semicircular outer peripheral portion of the rubber member 31 embedded in the roller member 21 is brought into point contact with the surface of the subject 2 and rolls, the roller having the object 2 and the rubber member embedded therein is rolled. The contact point with the member 21 becomes clear, and the number of rotations can be accurately measured based on the diameter of the outer peripheral portion of the rubber member 31. As a result, the position data corresponding to the moving distance of the run image sensor 10 is accurately detected. can do. Therefore, the conventional serrated roller 22
The position data can be detected with high accuracy without additionally providing the object 2, and the subject 2 is not damaged.

In this embodiment, the rubber member 31 is embedded with one ring-shaped rubber material, but two or more rubber members may be embedded and arranged in parallel. (Embodiment 2) Next, a guide roller according to the present invention will be described with reference to FIG.

FIG. 2 is a cross-sectional view showing an example of a guide roller in which a saw-tooth roller is provided in addition to a guide roller in which a rubber member is embedded on the outer peripheral surface of a roller member.
Similarly, the rubber member 31 is embedded in a groove 32 formed in the roller member 21 so that the outer peripheral portion thereof protrudes from the outer peripheral surface of the roller member 21. A rotating saw-tooth roller 22 is also provided. The serrated roller 22 is, for example, a SUS30
1-H, formed of a hard metal material such as stainless steel such as SUS304-H. The outer diameter of the serrated roller 22 is smaller than the outer diameter of the rubber member 31 embedded in the roller member 21 and larger than the outer diameter of the roller member 21. That is, the rubber member 31 is embedded in the roller member 21 so as to be larger than the outer diameter of the saw-toothed roller 22, so that the teeth of the saw-toothed roller 22 are deformed when the rubber member 31 is deformed only by its own weight of the image input device 1. The object 2 is prevented from contacting, and the outer diameter of the serrated roller 22 is made larger than the outer diameter of the roller member 21, so that when the rubber member 31 is greatly deformed, the serrated roller 22 Bite,
The outer peripheral surface of the roller member 21 contacts the subject 2.

The roller member 21 and the saw-toothed roller 22 are connected to a gear 23 in the same manner as in FIG.
It is attached to the image input device 1 in the same manner as in FIGS.

In the above configuration, when the image input device 1 is strongly pressed against the subject 2 during image input, the outer peripheral portion of the rubber member 31 is greatly deformed so as to be flush with the outer peripheral surface of the roller member 21. As a result, the roller member 21
The outer peripheral surface of the roller rolls on the subject 2 and the teeth of the saw-tooth roller member 22 bite into the subject 2 to generate a high gripping force. The movement direction of the roller member 21 is regulated by the saw-toothed roller 22, and the line image sensor The image is read by 10 and the number of rotations of the roller member 21 is measured. On the other hand, when the image input device 2 is lightly pressed to reduce the load applied thereto, the amount of deformation of the rubber member 31 is small, the outer peripheral portion of the rubber member 31 rolls on the subject 2, and the teeth of the saw-toothed roller 22 The image is read by the line image sensor 10 without directly touching the subject 2, and the rotation speed of the roller member 21 is measured.

Thus, when the operator inputs an image according to the type of the subject so as not to damage the subject 2, the load applied to the image input device 1 is reduced, and the tooth of the saw-toothed roller 22 is reduced. Can be scanned so as not to come into direct contact with the subject 2, while acquiring position data with higher precision than preventing the subject 2 from being damaged, and realizing highly accurate image synthesis input. If you give priority to
The image input device 1 is strongly pressed against the subject 2 to cause the serrated roller 22 to bite into the subject 2 and
Scanning can be performed while restricting the moving direction of the camera.

According to the present embodiment, it is possible to select and use both a case where priority is given to protection of the subject 2 and a case where priority is given to obtaining position data with higher accuracy. (Embodiment 3) Next, a guide roller of the present invention in which concave portions are formed on both sides of a rubber member embedded in the roller member along the outer peripheral surface of the roller member will be described with reference to FIG.

FIG. 3 is a sectional view of an essential part showing an example of a guide roller having concave portions formed on both sides of a rubber member embedded in the roller member along the outer peripheral surface of the roller member. The rubber member 3 is inserted into the groove 32 formed on the outer peripheral surface.
Roller member 21 in the guide roller 20 in which
A concave portion 34 is formed on both sides of the rubber member 31 embedded in the roller member 21 along the outer peripheral surface of the roller member 21, and a concave portion 34 is formed on both sides of the outer peripheral surface of the roller member 21, and a concave portion 34 is formed. The volume of the rubber member 31 embedded in the roller member 21 is formed so as to be larger than the volume of a portion protruding from the outer peripheral surface of the roller member 21. Then, similarly to the guide roller 20 shown in FIG. 1, the image forming apparatus is attached to the image input device 1 and is used for image reading.

According to the guide roller 20, when the operator presses the image input device 1 against the subject 2 to roll and move the roller member 21, the outer peripheral portion of the rubber member 31 protruding from the outer peripheral surface of the roller member 21 is moved. Is deformed by the load, the deformed portion is accommodated in the concave portion 34. Accordingly, the outer peripheral surface of the roller member 21 comes into contact with the subject 2 and rolls, and the rotation speed can be measured as a reference of the rotation speed at which the diameter of the roller member 21 is to be measured. Data can be detected, and furthermore, the distance between the optical line image sensor 10 and the subject 2 due to deformation of the rubber member 31 can be kept constant,
Thereby, the fluctuation of the focal length of the line image sensor 10 can also be suppressed.

In this embodiment, the roller member 21
Although the example in which the concave portions 34 are formed on both sides of the rubber member 31 embedded in the rubber member 31 is shown, the concave portions 34 may be formed on one side of the rubber member 31. (Embodiment 4) FIG. 4 is a sectional view of a main part showing another example of a guide roller in which a concave portion is formed along the outer peripheral surface of a roller member on both sides of a rubber member embedded in the roller member. As shown in FIG. 3, in a guide roller 20 having a side surface of a roller member having a rubber member embedded therein and a saw-toothed roller rotating coaxially with the roller member, roller members 21 are provided on both sides of a rubber member 31 embedded in the roller member 21 in the same manner as in FIG. Recess 3 along the outer peripheral surface of
4 is formed, and a concave portion 34 is formed on both sides of the outer peripheral surface of the roller member 21 while leaving a flat portion 33.
Is formed so as to be larger than the volume of a portion of the rubber member 31 embedded in the roller member 21 protruding from the outer peripheral surface of the roller member 21. Then, similarly to the guide roller 11 shown in FIG. 2, it is attached to the image input device 1 and is used for image reading.

According to the guide roller 20, when the operator presses the image input device 1 against the subject 2 to roll the roller member 21 and moves the saw-toothed roller 22 to bite the subject 2, the roller member 21 When the outer peripheral portion of the rubber member 31 protruding from the outer peripheral surface is deformed by the load, the deformed portion is accommodated in the concave portion. Therefore, similarly to FIG. 3, the outer peripheral surface of the roller member 21 comes into contact with the subject 2 and rolls.
The rotation speed can be measured as a reference for the rotation speed at which the diameter of the object should be measured, more accurate position data can be detected, and the distance between the optical line image sensor 10 and the subject 2 is kept constant. , So that the fluctuation of the focal length of the line image sensor 10 can be suppressed. (Embodiment 5) Next, an example of a guide roller of the present invention in which a rubber member is provided on an auxiliary roller provided alongside a roller member is shown in FIG.
It will be described based on.

FIG. 5 is a sectional view showing an example of a guide roller of the present invention in which a rubber member is provided on an auxiliary roller provided alongside the roller member. The guide roller 20 is formed by die-casting a metal material such as aluminum or by molding a synthetic resin. The outer peripheral surface is formed of the same material as the roller member 21 and the auxiliary roller 36 having a flat outer peripheral surface and a diameter smaller than the diameter of the roller member 21 and a rubber member 31. The roller member 21 is provided with a connecting pin 26 protruding from one side thereof, and the auxiliary roller 36 is cut out stepwise along the outer peripheral surface on one side surface in the thickness direction as a notch. A step 38 is formed. on the other hand,
The rubber member 31 has a diameter larger than the diameter of the roller member 21 and has a ring-like external shape. The cross-sectional shape of the outer peripheral portion is a semicircular shape, and the inner peripheral surface is flat. I have.

The rubber member 31 is provided by filling the step 38 so that the outer peripheral portion of the rubber member 31 protrudes from the outer peripheral surface of the roller member 21 and one side surface of the rubber member 31 contacts the side surface of the roller member 21. Rubber member 31 and auxiliary roller 36
Are integrally formed.

In order to integrate the auxiliary roller 36 and the rubber member 31, for example, the auxiliary roller 36 in which the step portion 38 has been formed is mounted on a mold and a cavity for forming the rubber member 31 in the mold is formed. In addition, for example, an injection-moldable thermoplastic elastomer is injected from at least one runner portion, and thereby the step 38 of the auxiliary roller 36 is formed.
Is provided with a rubber member 31 to integrate them.

The roller member 21 and the rubber member 3
The auxiliary roller 36 provided with the first roller 1 is in contact with the side of the roller member 21 from which the connection pin 26 is projected and the side of the auxiliary roller 36 where the rubber member 31 is provided, and is connected by the connection pin 26. The outer peripheral portion of the rubber member 31 protrudes from the outer peripheral surface of the roller member 21, and the roller member 21 side of the rubber member 31 is in close contact with the side surface of the roller member 21. As a result, the rubber member 31 is sandwiched between the auxiliary roller 36 and the roller member 21 from both side surfaces in the thickness direction, and deformation and distortion of the rubber member 31 in the thickness direction are suppressed.

Further, the roller member 21 and the auxiliary roller 36
The rotation of the roller member 21 is provided on the opposite side of the roller member 21 on the side where the auxiliary roller 36 is provided. Shared with the gear unit 23 for transmission to the gear unit 23.

The guide roller 20 in which a rubber member is provided on the auxiliary roller provided alongside the roller member is attached to the image input device 1 shown in FIGS. 8 and 9 in the same manner as the guide roller shown in FIG. . That is, the guide rollers 20 of the present invention are attached to both sides of the line image sensor 10 so as to be independently rotatable, and the gear portion 23 is meshed with the gear train 13 shown in FIG. The rotation of the roller member 21 is transmitted to a magnetic ring (not shown) to rotate the magnetic ring, and the rotation speed of the magnetic ring is detected by the magnetic encoder 15, thereby measuring the rotation speed of the roller member 21. The line image sensor 10 and the encoder 15 are respectively connected to a computing unit provided in the image input device 1 or a computing device 18 such as an external personal computer connected to the image input device 1 by a cable 17 or the like. .

In the above-described configuration, similarly to the guide roller shown in FIG.
When the image is input to the subject 2, the image input apparatus 1 is placed on the subject 2 and the auxiliary roller 36
The outer peripheral portions of the rubber members 31 provided on the object 2 are respectively brought into contact with the object 2, and the roller member 21 is manually moved to the object 2.
Rolling up, the image input device 1 is moved in an arbitrary direction in which an image is to be read, whereby the line image sensor 10 is scanned in an arbitrary direction in which an image is to be read, and an image is read from the subject 2. The rotation of the roller member 21 during that time is transmitted to the magnetic ring via the gear portion 23 and the gear train 13 to rotate the magnetic ring, and the rotation number of the magnetic ring is detected by the magnetic encoder 15 so that the roller member is rotated. The rotation speed of 21 is measured.
Next, the read image data and the measured roller member 2
The number of rotations of 1 is input to an arithmetic unit provided in the image input apparatus 1 or an external arithmetic unit 18 connected to the image input apparatus 1 by a cable 17 or the like. Thereafter, the rotation speed of the roller member 21 is converted into position data corresponding to the moving distance of the line image sensor 10 by an arithmetic unit or an arithmetic unit 18, and the position data and the line image sensor 10.
The image data input from is subjected to image synthesis processing by the image synthesis means, and the original image is restored on a storage device or a display screen provided in the arithmetic unit 18, thereby completing the image input.

According to the present embodiment, the semicircular outer peripheral portion of the rubber member 31 provided on the auxiliary roller 36 provided along with the roller member 21 is brought into point contact with the surface of the subject 2 and rolls. The contact point with the rubber member 31 becomes clear, and the number of revolutions can be accurately measured based on the diameter of the outer peripheral portion of the rubber member 31.
Position data corresponding to a movement distance of 0 can be detected with high accuracy. In addition, since the deformation of the rubber member 31 is suppressed by the contact of the roller member 21 with the subject 2, the change in the focal length between the optical line image sensor 10 and the subject 2 can also be suppressed. Therefore, the position data can be accurately detected without additionally providing the conventional saw-toothed roller 22 and the subject 2 is not damaged.

In this embodiment, a rubber-like material is injection-molded on the step 38 formed on the auxiliary roller 36 to form the auxiliary roller 3.
6 shows an example in which the rubber member 31 is provided and the auxiliary roller 36 and the rubber member 31 are integrated.
Is formed in advance by molding or the like in accordance with the shape of the step 38, and this is formed on the step 38 formed on the auxiliary roller 36.
It may be provided so as to be fitted in a. (Embodiment 6) Next, another example of the guide roller of the present invention in which a rubber member is provided on an auxiliary roller provided alongside the roller member will be described with reference to FIGS.

FIG. 6 is a sectional view of an essential part showing another example of the guide roller of the present invention in which a rubber member is provided on an auxiliary roller provided alongside the roller member, and FIG. 7 is a plan view showing constituent members in FIG. (A) is a plan view of an auxiliary roller, and (b) is a plan view of a roller member.

The guide roller 20 is a guide roller provided with an auxiliary roller 36 integrally formed with the rubber member 31 on the roller member 21 shown in FIG. In addition to forming an annular locking groove 41 communicating with the inside thereof,
A locking portion 42 is added to the rubber member 31 and locked in the annular locking groove 41. Further, a projection 45 protruding toward the roller member 21 integrated with the locking portion 42 is formed. An annular recess 44 is formed in the roller member 21 and a projection 45 is fitted in the annular recess 44.

That is, as shown in FIG. 6, the auxiliary roller 36 has a step portion 38 formed on the side surface in contact with the roller member 21 along the outer peripheral surface thereof. An annular locking groove 41 communicating with the step 38 and concentric with the auxiliary roller 36 is formed on the inner side in the radial direction, and the auxiliary roller 36 is formed on the roller member 21 as shown in FIGS. An annular concave portion 44 concentric with the roller member 21 is formed on the side surface in contact with the roller member 21.

On the other hand, similarly to FIG. 5, the rubber member 31 has a larger diameter than the roller member 21 and has a ring-like appearance, and its outer peripheral portion has a semicircular cross section. An engaging portion 42 is formed on the inner peripheral portion of the engaging member 42 so as to protrude in a direction opposite to the roller member 21, and an intermediate portion between the outer peripheral portion and the inner peripheral portion is formed in a shape matching the shape of the step portion 38. Have been. The locking portion 42 is formed in an annular shape. The locking portion 42 is integrally formed with a protrusion 45 protruding from the roller member 21 toward the roller member 21 along the circumferential direction of the locking portion 42. A plurality are formed at appropriate intervals.

The rubber member 21 is provided by filling the auxiliary roller 36 so that the outer peripheral portion of the rubber member 21 projects from the outer peripheral surface of the roller member 21 and one side surface of the rubber member 21 contacts the side surface of the roller member 21. The intermediate portion is provided on the step portion 38, and the locking portion 42 is locked in the annular locking groove 41, whereby the rubber member 21 and the auxiliary roller 36 are integrally formed.

In order to integrate the auxiliary roller 36 and the rubber member 31, for example, the step portion 38, the annular locking groove 41 (not shown in FIG. 7A), the connecting pin insertion hole 27, etc. The formed auxiliary roller 36 as shown in FIG. 7A is mounted on a mold, and a cavity in which the rubber member 31 is to be formed is formed in the mold, and a plurality of cavities are formed on a predetermined circumference of the auxiliary roller 36. Gate portions 39 are arranged at predetermined intervals, and a thermoplastic elastomer that can be injection-molded, for example, is injected into the cavity from the runner portion 39 to form the rubber member 31 on the step portion 38 of the auxiliary roller 36, and The rubber member 31 is formed in the locking groove 41 to form a locking portion 42, whereby the auxiliary roller 36 and the rubber member 31 are integrated. The remaining pieces of the elastomer remaining in the runner portion 39 are left as the projecting portions 45.

The auxiliary roller 36 provided with the rubber member 31 formed as described above is fitted with its protruding portion 45 into the annular concave portion 44 formed on the roller member 21 and connected to the connecting member formed on the roller member 21. Pin 26 to auxiliary roller 3
6 is connected to the roller member 21 by being inserted into the connection pin insertion hole 27 formed in the same.

According to this embodiment, the auxiliary roller 36 has a cutout as a cutout 38 and an annular locking groove 41 communicating therewith.
And the locking portion 42 is formed in the rubber member 31 and the locking portion 42 is locked in the annular locking groove 41, so that the contact area between the auxiliary roller 36 and the rubber member 31 increases, and the auxiliary roller 36 and the rubber Adhesion with the member 31 is enhanced, and
The locking portion 42 is locked in the annular locking groove 41 and the rubber member 31
Is fixed to the auxiliary roller 36, whereby the rubber member 31 can be prevented from falling off from the auxiliary roller 36.

Further, since the auxiliary roller 36 and the rubber member 31 are integrally formed to form the protrusion 45 and the annular recess 44 is formed in the roller member 21, the protrusion 45 is fitted into the annular recess 44. The auxiliary roller 36
And the roller member 21 can be connected, and since the annular concave portion 44 is formed in an annular shape, that is, a circumferential shape, when the auxiliary roller 36 and the roller member 21 are connected and assembled, the annular concave portion 44 is The portions 45 need not be aligned in the circumferential direction, and can be easily connected. In addition, the adhesion between the auxiliary roller 36 and the roller member 21 can be improved.

In this embodiment, the auxiliary roller 36 is formed with a stepped portion 38 as a notch and an annular locking groove 41 communicating with the stepped portion.
An example is shown in which a rubber member 31 is provided on a step portion 38 formed in the same manner as described above, and a locking portion 42 made of the rubber member 31 is formed in an annular locking groove 41, whereby the auxiliary roller 36 and the rubber member 31 are integrated in advance. However, the rubber member 31 is previously formed into a predetermined shape as described above by molding or the like.
This may be fitted into a notch formed in the auxiliary roller 36. Further, in the present embodiment, the example in which the locking portion 42 is formed in an annular shape is shown, but a plurality of locking portions 42 may be formed at appropriate intervals along the circumferential direction, or only one is formed. Alternatively, only one protrusion 45 may be formed.

In each of the above embodiments, the outer peripheral portion of the rubber member 31 has a semicircular shape, but the outer peripheral portion of the rubber member 31 has a convex shape having an acute angle such as a wedge. By doing so, the roller member 21 can be rolled in point contact with the surface of the subject 2. Further, an optical encoder other than the magnetic encoder 15 can be used as the rotation speed measuring means.

[0084]

According to the guide roller of the present invention in which the rubber member is embedded in the roller member, the image can be read while ensuring the detection accuracy of the moving distance of the image reading means without damaging the subject. Position data required for the composition can be acquired with high accuracy.

Further, according to the guide roller of the present invention, in which the roller member in which the rubber member is embedded and the saw-tooth roller are provided, according to the type of the subject, the subject is not damaged, and the moving distance of the image reading means can be accurately determined. The image can be read with priority given to any of the detections.

Further, according to the guide roller of the present invention, in which a concave portion is formed on both sides or one side of the rubber member along the outer peripheral surface of the roller member, the moving distance of the image reading means can be accurately detected.

Further, according to the guide roller in which the rubber member is provided on the auxiliary roller provided alongside the roller member of the present invention, it is possible to read the image while ensuring the detection accuracy of the moving distance of the image reading means without damaging the subject. Thus, position data required for image composition can be obtained with high accuracy.

Further, according to the guide roller in which the rubber member is provided on the auxiliary roller provided alongside the roller member of the present invention, the roller member and the auxiliary roller can be easily formed by the guide roller formed by integrating the auxiliary roller and the rubber member. It can be assembled by connecting to.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a guide roller of the present invention.

FIG. 2 is a cross-sectional view showing another embodiment of the guide roller of the present invention.

FIG. 3 is a sectional view of a main part showing another embodiment of the guide roller of the present invention.

FIG. 4 is a sectional view of a main part showing another embodiment of the guide roller of the present invention.

FIG. 5 is a cross-sectional view showing another embodiment of the guide roller of the present invention.

FIG. 6 is a sectional view of a main part showing another embodiment of the guide roller of the present invention.

7A and 7B are plan views showing constituent members in FIG. 6, wherein FIG. 7A is a plan view of an auxiliary roller, and FIG. 7B is a plan view of a roller member.

FIG. 8 is a front view schematically showing a conventional image input device.

FIG. 9 is a perspective view illustrating a use state of the image input apparatus.

FIG. 10 is a perspective view illustrating a configuration of a conventional guide roller.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Image input device 2 Subject 10 Line image sensor 11 Guide roller 13 Gear train 15 Encoder 17 Cable 18 Arithmetic device 20 Guide roller 21 Roller member 22 Serrated roller 23 Gear part 24 Bearing part 25 Rotation axis 26 Connection pin 27 Connection pin insertion hole 31 rubber member 32 groove portion 33 flat portion 34 concave portion 36 auxiliary roller 38 step portion 39 runner portion 41 annular locking groove 42 locking portion 44 annular concave portion 45 projecting portion

Claims (17)

[Claims] 1. A guide roller comprising a roller member rolling on a subject, image reading means for moving the roller member to read an image from the subject, and detecting a moving distance of the image reading means. A guide roller in an image input device provided with a rotation speed measuring means for measuring the rotation speed of the roller member, wherein the roller member is formed from a non-deformable material, and a groove is formed along an outer peripheral surface thereof. A guide roller in an image input device, wherein a rubber member is embedded along a groove so that an outer peripheral portion thereof protrudes from an outer peripheral surface of a roller member. 2. The guide roller according to claim 1, wherein a side surface of the roller member in which the rubber member is embedded is provided with a saw-tooth roller which rotates coaxially with the roller member. 3. The image input device according to claim 2, wherein an outer diameter of said saw-toothed roller is smaller than an outer diameter of a rubber member embedded in said roller member and larger than an outer diameter of said roller member. Guide rollers in the. 4. The image input device according to claim 1, wherein a concave portion is formed on both sides or one side of the rubber member embedded in the roller member along the outer peripheral surface of the roller member. Guide roller. 5. The guide roller according to claim 4, wherein the concave portion is formed on the outer peripheral surface of the roller member while leaving a flat portion. 6. The image input device according to claim 4, wherein a volume of the concave portion is larger than a volume of a portion of the rubber member embedded in the roller member protruding from an outer peripheral surface of the roller member. Guide rollers in the. 7. A guide roller comprising a roller member rolling on a subject, image reading means for reading an image from the subject by moving with the rolling of the roller member, and detecting a moving distance of the image reading means. A guide roller in an image input apparatus provided with a rotation speed measuring means for measuring the rotation speed of the roller member, wherein the roller member is formed of a non-deformable material, and the roller is formed of a non-deformable material on a side surface thereof. An auxiliary roller that contacts the member and its side surface and rotates coaxially with the member is provided, and a notch is formed along the outer peripheral portion on the side surface of the auxiliary roller that contacts the roller member. A rubber member provided so that an outer peripheral portion thereof protrudes from an outer peripheral surface of the roller member and one side surface thereof is in contact with the roller member. Inner roller. 8. The guide roller according to claim 7, wherein a rubber member is provided by injection-molding a rubber-like material in a notch formed in the auxiliary roller. 9. A notch formed in the auxiliary roller has an annular locking groove formed concentrically with the auxiliary roller, and a rubber member projects from the rubber member to the side opposite to the roller member so as to be locked in the annular locking groove. 8. A guide roller according to claim 7, wherein said locking portion is formed and said locking portion is locked in said annular locking groove. 10. The guide roller according to claim 9, wherein a rubber member is formed by injection-molding a rubber-like material into the annular locking groove formed in the notch. 11. A projection integrally formed with the engaging portion and projecting toward the roller member, and an annular recess concentric with the roller member is formed on a side of the roller member that contacts the auxiliary roller. 10. The guide roller according to claim 9, wherein the protrusion is fitted in the annular recess. 12. The projection according to claim 1, wherein said projection is formed integrally with a rubber member by injection molding a rubber-like material.
A guide roller in the image input device according to 1. 13. The guide according to claim 7, wherein the outer diameter of the roller member is smaller than the outer diameter of the rubber member, and the outer peripheral surface is flat. roller. 14. The guide roller according to claim 1, wherein the outer peripheral portion of the rubber member has a convex cross-sectional shape. 15. The guide roller according to claim 14, wherein the convex shape is a semicircular shape. 16. The rubber material constituting the rubber member has a rubber hardness of 60 ° to 80 °.
A guide roller in the image input device according to any one of claims 15 to 15. 17. A guide roller according to claim 1, wherein a gear portion for transmitting the rotation of said roller member to another rotating member is connected to said roller member. .