JP2000332965A - Image input-output device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image input-output device capable of high density reading without increase in costs. SOLUTION: In this image input-output device which inputs and outputs an original image such as a sentence by a CCD line sensor 27 through a lens 30, a parallel flat glass 38 is arranged between the lens 30 and the sensor 27, and an image is read by utilizing the refraction action of the glass 38. The parallel flat glass is turnable against a shaft that is parallel with the CCD light receiving face of the CCD line sensor and is also perpendicular to a line (horizontal scanning) direction and is optically large enough to cover the CCD light receiving pixels. The parallel flat glass is desirably turned by an electromagnetic driving means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image input / output device for inputting / outputting an image using an optical system such as a lens and an electric reading means such as a CCD line sensor.

[0002]

2. Description of the Related Art In a conventional image input / output device of this type, the reading density of a document in the main scanning direction is determined by the performance of the sensor itself such as the number of pixels of a CCD line sensor. Without it, the reading density did not increase and the reading width was narrow.

[0003]

However, in the above-described CCD line sensor having an increased number of pixels in the conventional example, if the external dimensions are substantially the same, the reading sensitivity is reduced because the pixels themselves are reduced, and the reading sensitivity is reduced. There is a problem in that an adverse effect such as the necessity of increasing the amount of light to compensate for the decrease is caused, and the cost of the entire image input / output device is increased because the sensor itself becomes expensive.

[0004] The present invention has been made in view of the above-mentioned problems of the above-described conventional technology, and an object of the present invention is to provide an image input device capable of high-density reading without increasing costs. An output device is provided.

[0005]

According to a first aspect of the present invention, there is provided an image input / output apparatus for inputting / outputting an image using an optical system and an electric reading unit. A refracting means for refracting an optical axis is disposed between an optical system and the electric reading means, and an image is read by utilizing the refracting action of the refracting means.

[0006] In order to achieve the above object, a second aspect is provided.
The image input / output device according to claim 1, wherein the optical system is a lens.

[0007] In order to achieve the above object, a third aspect is provided.
The image input device according to claim 1, wherein the electric reading means is a CCD line sensor.

[0008] In order to achieve the above object, a fourth aspect of the present invention is provided.
The image input / output device according to claim 1, wherein the refraction means is a parallel plate glass.

According to another aspect of the present invention, there is provided a semiconductor device comprising:
The image input / output device according to claim 1, wherein the optical system is a lens, the electric reading unit is a CCD line sensor, and the refraction unit is a parallel plate glass. Features.

[0010] Further, in order to achieve the above object, claim 6
6. The image input / output device according to claim 5, wherein the parallel plate glass is parallel to an axis parallel to a CCD light receiving surface of the CCD line sensor and perpendicular to a line (main scanning) direction. It is rotatable and optically covers the CCD light receiving pixels.

[0011] In order to achieve the above object, the present invention provides a seventh aspect.
The image input / output device according to the fifth aspect is characterized in that, in the image input / output device according to the fifth aspect, the parallel flat glass is rotated by electromagnetic driving means.

[0012] In order to achieve the above object, the present invention provides an eighth aspect.
8. The image input / output apparatus according to claim 7, wherein the electromagnetic driving means includes a rotating member supporting the parallel flat glass and a magnetic body to be attracted (armature), and the armature. A coil for suctioning, an iron core having a suction surface penetrating the coil and facing the suctioned surface of the armature, and a biasing member for biasing and holding the flat plate glass in a fixed position. It is characterized by.

[0013] In order to achieve the above object, the present invention provides a ninth aspect.
The image input / output device according to claim 8, wherein in the support member that supports the lens and the CCD line sensor, the rotation axis of the parallel flat glass and the parallel flat glass are fixed at a position. A stopper for positioning, a stopper for determining a desired amount of rotation of the parallel flat glass, a supporting portion of the urging member, a supporting portion of the coil, and a supporting portion of the iron core are integrally formed. And

According to another aspect of the present invention, there is provided a computer system comprising:
The image input / output device according to claim 0, wherein the parallel flat glass has two positions: a fixed position by the urging member, and a desired rotational suction position when the coil is energized. The CCD line sensor can obtain different information in the main scanning direction due to the refraction of the parallel plate glass by enabling the position to be held and reading the same line of the document at the two positions.

[0015] Further, in order to achieve the above object, a first aspect is provided.
An image input / output device according to claim 1 is the image input / output device according to claim 8, 9 or 10, wherein the biasing member is a spring.

Further, in order to achieve the above object, a first aspect is provided.
2. The image input / output device described in 2 is an image input / output device for inputting / outputting an original image such as a sentence with a CCD line sensor via a lens, wherein a parallel flat glass is disposed between the lens and the CCD line sensor. An image is read by utilizing the refraction of the parallel plate glass.

Further, in order to achieve the above object, a first aspect is provided.
The image input / output device according to claim 3, wherein the parallel plate glass is parallel to an axis parallel to a CCD light receiving surface of the CCD line sensor and perpendicular to a line (main scanning) direction. And is large enough to optically cover the CCD light receiving pixels.

Further, in order to achieve the above object, a first aspect is provided.
An image input / output device according to a fourth aspect is the image input / output device according to the twelfth or thirteenth aspect, wherein the parallel flat glass is rotated by an electromagnetic driving means.

Further, in order to achieve the above object, a first aspect is provided.
15. The image input / output device according to claim 5, wherein the electromagnetic driving means includes a rotating member supporting the parallel flat glass and a magnetic body to be attracted (armature); and the armature. Coil, a core having a suction surface penetrating the coil and facing the suction surface of the armature, and a biasing member for biasing and holding the parallel flat glass at a fixed position. It is characterized by the following.

[0020] In order to achieve the above object, a first aspect is provided.
The image input / output device according to claim 6, wherein the rotation axis of the parallel flat glass and the parallel flat glass are fixed to a support member that supports the lens and the CCD line sensor. And a stopper for determining a desired amount of rotation of the parallel flat glass, a support portion of the urging member, a support portion of the coil, and a support portion of the iron core. Features.

According to another aspect of the present invention, there is provided a computer system comprising:
7. The image input / output device according to claim 7, wherein the parallel plate glass has two positions: a fixed position by the urging member; and a desired rotational suction position when the coil is energized. The position can be held, and the same line reading of the original is performed at the two positions, so that the CCD
The line sensor can obtain different information in the main scanning direction by the refraction of the parallel plate glass.

[0022] In order to achieve the above object, a first aspect is provided.
8. The image input / output device according to claim 8, wherein
7. The image input / output device according to claim 7, wherein the biasing member is a spring.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view showing a configuration of an image input / output apparatus according to an embodiment of the present invention, in which a part of a housing is cut away, and FIG. 2 is a front view showing the same configuration of the image input / output apparatus. ,
FIG. 3 is a left side view showing the configuration of the image input / output device.

In each of the figures, reference numeral 1 denotes a housing including a platen glass, 2 denotes a rear portion of a pressing plate, and 3 denotes a document holder (front portion of the pressing plate). Reference numeral 4 denotes a reading start switch, and reference numeral 5 denotes an optical system unit in which an optical system for reading is accommodated. The moving direction of the optical system unit 5 is set by fitting the optical system unit 5 to a guide shaft (not shown). Reference numeral 6 denotes a motor with a pinion gear, 7 denotes a reduction gear, and 8 denotes a belt, which is connected to the optical system unit 5 and moves the optical system unit 5. 9 is a base attached to the housing 1,
It connects the motor 6 with a pinion gear and a driven pulley plate 11 described later. 10 is a compression spring for applying tension, 11 is a driven pulley plate, and 12 is a connection cable for exchanging signals between the optical system unit 5 and an electric board (not shown).

FIG. 4 is a sectional view of the right side of the optical system unit 5, and FIG. 5 is an exploded rear perspective view of the optical system unit 5. In both figures, reference numeral 12 denotes a connection cable, and 13 denotes a lamp such as a fluorescent lamp for illuminating a document. A reflector 14 amplifies the illumination light of the lamp 13. 15 is a mounting screw, 16
Is a lamp holder that supports the lamp 13 and the reflector 14, has a function of preventing disturbance light, and is attached to a carriage 24, which will be described later, with an attachment screw 15. 17, 18, 19, 20, 21 are total reflection mirrors,
The reading optical path is guided to a CCD line sensor 27 described later. 22 is a fixture, each total reflection mirror 1
7 to 21 are fixed. Reference numeral 23 denotes a roller that rolls on a rail (not shown) to maintain the distance of the optical system unit 5 from the document and to allow smooth movement.

Reference numeral 24 denotes a carriage serving as a base of the optical system, in which members constituting the present invention are incorporated. 24f is a bearing fitted to the guide shaft, and is provided at both ends on the same axis. Reference numeral 25 denotes a fixing member for fixing a CCD line sensor (electric reading means) 27 to be described later, and is attached to the carriage 24 by an attachment screw 26. Reference numeral 27 denotes a CCD line sensor (electrical reading means) for electrically reading an image. 28 is a mounting board for the CCD line sensor 27, 29 is a mounting board 28
A fixing plate for fixing the CCD line sensor 27
After the positioning, is also used as the connection with the fixing member 25 and the cover of the mounting board 28. Reference numeral 30 denotes an imaging lens (optical system), and reference numeral 31 denotes a lens pressing plate that holds the imaging lens 30. Reference numeral 32 denotes a mounting screw for attaching the imaging lens 30 to the carriage 24 via the lens pressing plate 31.
Reference numeral 33 denotes an inverter circuit board for driving the lamp 13, and a lead wire 33 a with a connector extending therefrom is connected to the mounting board 28. Reference numeral 34 denotes a mounting screw for attaching the inverter circuit board 33 to the carriage 24.

Numeral 35 is a coil for electromagnetic drive, and the coil 3
The lead wire 35 a with connector extending from the terminal No. 5 is connected to the mounting board 28. Reference numeral 36 denotes a spring (biasing means) for holding a parallel flat glass (refracting means) 38 described below at a fixed position, and 37 denotes an iron core, which generates an electromagnetic attraction force when the coil 35 is energized. Iron core 37 is coil 3
5, and has a suction surface facing the suction surface of the armature 39 described later. Numeral 38 denotes a parallel plate glass (refractive means) for refracting a reading light beam, which is rotated by an electromagnetic driving means (rotating mechanism). Parallel flat glass 38
Is disposed between the lens 30 and the CCD line sensor 27. The parallel flat glass 38 is parallel to the CCD light receiving surface of the CCD line sensor 27 and is a line (main scanning).
It is rotatable about an axis perpendicular to the direction and is set to a size that optically covers the CCD light receiving pixels of the CCD line sensor 27. An armature 39 is a magnetic attraction member, and a rotating member 40 supports the parallel plate glass 38 and the armature 39. Reference numeral 41 denotes a fixing cover for fixing the electromagnetic driving means, which is attached to the carriage 24 by mounting screws 42. The fixed cover 4
Reference numeral 1 denotes a support shaft 24 to be described later, as shown in FIGS.
A stopper surface equivalent to b is formed. A back cover 43 of the carriage 24 is attached to the carriage 24 by mounting screws 44.

The electromagnetic driving means comprises a coil 35, a spring 36, an iron core 37, and a rotating member 40.

The parallel flat glass 38 has two positions: a fixed position by the spring 36 and a desired rotational suction position when the coil 35 is energized.
By holding the two positions and reading the same line of the original at the two positions, the CCD line sensor 27 can obtain different information in the main scanning direction due to the refraction of the parallel plate glass 38.

FIG. 6 is an enlarged view of a portion A in FIG. 5. In FIG. 6, reference numeral 24b denotes a support shaft, in which a fitting hole provided at one end of the support member 40 is fitted, and the support member 40 is turned. Held movably. Reference numeral 24c denotes a stopper for performing fixed positioning of the parallel flat glass 38, 24d denotes a stopper for performing desired rotation positioning of the parallel flat glass 38, and 24e denotes a holding portion of the spring 36. These support shaft 24b, stopper 24c,
24d and the holding portion 24e are formed integrally with the carriage 24.

The spring 36 is applied to an end of the support member 40 different from the end of the rotation fulcrum so that a force (urging force) pressing the stopper 24c is applied.
When the power is supplied to 5, the support member 40 is held by the stopper 24c.

FIG. 7 is a plan view showing a fixed position state of the parallel flat glass 38 when the coil 35 is energized, and FIG.
It is a top view which shows the electromagnetic attraction position state at the time of non-energization of the coil 35, and the arrow X shows the turning direction of the parallel flat glass 38 by electromagnetic attraction in the same figure.

FIG. 9 is a left side view of FIG. 7, and FIG. 10 is a left side view of FIG.

As shown in FIGS. 8 and 9, when the parallel flat glass 38 is at a fixed position and an electromagnetic attraction position, the parallel flat glass 38 faces the light receiving surface of the CCD line sensor 27 at a different angle. That is, the reading light speed is guided to the CCD line sensor 27 as different information due to the refraction of the parallel plate glass 38. Accordingly, high-density reading of pixels of the CCD line sensor 27 or more can be performed, and high-density reading can be performed without increasing the cost.

[0036]

As described above in detail, according to the image input / output device of the present invention, by reading using the refraction function of the refraction means, it becomes possible to perform high-density reading more than the pixels of the electric reading means. Since a complicated mechanism is not required, there is an effect that space can be saved and cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view showing a configuration of an image input / output device according to an embodiment of the present invention, in which a part of a housing is cut away.

FIG. 2 is a front view showing a configuration of an image input / output device according to one embodiment of the present invention.

FIG. 3 is a left side view showing the configuration of the image input / output device according to the embodiment of the present invention.

FIG. 4 is a right side sectional view of an optical system unit in the image input / output device according to one embodiment of the present invention.

FIG. 5 is an exploded rear perspective view of an optical system unit in the image input / output device according to one embodiment of the present invention.

FIG. 6 is an enlarged view of a portion A in FIG. 5;

FIG. 7 is a plan view showing a fixed position state of the parallel flat glass when energizing the coil in the image input / output device according to the embodiment of the present invention.

FIG. 8 is a plan view showing an electromagnetic attraction position state when the coil is not energized in the image input / output device according to the embodiment of the present invention.

FIG. 9 is a left side view of FIG. 7;

FIG. 10 is a left side view of FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 housing 2 rear part of pressure plate 3 document holder (front part of pressure plate) 4 reading start switch 5 optical system unit 6 motor with pinion gear 7 reduction gear 8 belt 9 base 10 compression spring 11 driven pulley plate 12 connection cable 13 lamp 14 reflector 15 Mounting screw 16 Lamp holder 17 Total reflection mirror 18 Total reflection mirror 19 Total reflection mirror 20 Total reflection mirror 21 Total reflection mirror 22 Fixing bracket 23 Roller 24 Carriage 24b Support shaft 24c Stopper 24d Stopper 24e Holder 24f Bearing 25 Fixing member 26 Mounting screw 27 CCD line sensor (electric reading means) 28 Mounting substrate 29 Fixing plate 30 Imaging lens (optical system) 31 Lens holding plate 32 Mounting screw 33 Inverter circuit board 33a Connector Lead wire 34 Mounting screw 35 Coil 35a Lead wire with connector 36 Spring (biasing means) 37 Iron core 38 Parallel flat glass (bending means) 39 Suction magnetic body (armature) 40 Rotating member 41 Fixed cover 42 Mounting screw 43 Back cover 44 Mounting screw

Continued on the front page F-term (reference) 5C072 AA01 BA04 BA16 DA01 DA02 DA21 DA23 EA05

Claims (18)

[Claims] 1. An image input / output device for inputting / outputting an image using an optical system and an electric reading means, wherein a refracting means for refracting an optical axis is disposed between the optical system and the electric reading means. An image input / output device for reading an image by utilizing a refraction effect of the refraction means. 2. The image input / output apparatus according to claim 1, wherein said optical system is a lens. 3. An image input / output apparatus according to claim 1, wherein said electric reading means is a CCD line sensor. 4. An image input / output apparatus according to claim 1, wherein said refraction means is a parallel plate glass. 5. The image input / output apparatus according to claim 1, wherein said optical system is a lens, said electric reading means is a CCD line sensor, and said refracting means is a parallel plate glass. 6. The parallel flat glass is parallel to the CCD light receiving surface of the CCD line sensor and has a line (main scanning).
6. The image input / output device according to claim 5, wherein the image input / output device is rotatable about an axis perpendicular to the direction, and has a size to optically cover the CCD light receiving pixels. 7. An image input / output apparatus according to claim 5, wherein said parallel flat glass is rotated by an electromagnetic driving means. 8. The electromagnetic driving means includes: a rotating member supporting the parallel plate glass and the magnetic body to be attracted (armature); a coil for attracting the armature; 8. The image input / output device according to claim 7, comprising: an iron core having a suction surface facing the suction surface of the armature; and an urging member for urging and holding the parallel flat glass at a fixed position. 9. A support member for supporting the lens and the CCD line sensor, a stopper for positioning the parallel flat glass in a fixed position and a desired rotation amount of the parallel flat glass. 9. The image input / output apparatus according to claim 8, wherein a stopper for determining the position, a supporting portion of the urging member, a supporting portion of the coil, and a supporting portion of the iron core are integrally formed. 10. The parallel flat glass is capable of holding two positions, a fixed position by the urging member and a desired rotational suction position when the coil is energized, so that the same line reading of the document can be performed by the two lines. By performing at the position, the CCD
9. The image input / output device according to claim 8, wherein the line sensor can obtain different information in the main scanning direction by the refraction of the parallel flat glass. 11. The image input / output device according to claim 8, wherein the urging member is a spring. 12. An image input / output device for inputting / outputting a document image such as a sentence using a CCD line sensor via a lens, wherein a parallel plate glass is disposed between said lens and said CCD line sensor. An image input / output device for reading an image by utilizing the refraction of glass. 13. The parallel plate glass is rotatable about an axis parallel to a CCD light receiving surface of the CCD line sensor and perpendicular to a line (main scanning) direction, and optically controls the CCD light receiving pixels. The image input / output device according to claim 12, wherein the image input / output device has a size to cover. 14. An image input / output device according to claim 12, wherein said parallel flat glass is rotated by an electromagnetic driving means. 15. The electromagnetic driving means includes: a rotating member supporting the parallel plate glass and a magnetic body to be attracted (armature); a coil for attracting the armature; 15. The image input / output device according to claim 14, comprising an iron core having a suction surface facing the suction surface of the armature, and a biasing member for biasing and holding the parallel flat glass at a fixed position. 16. A stopper for positioning the parallel flat glass in a fixed position and a desired rotation amount of the parallel flat glass on a support member supporting the lens and the CCD line sensor. 13. The image input / output apparatus according to claim 12, wherein a stopper for determining the force, a supporting portion of the urging member, a supporting portion of the coil, and a supporting portion of the iron core are integrally formed. 17. The parallel flat glass is capable of holding two positions, a fixed position by the urging member and a desired rotational suction position when the coil is energized, so that the same line reading of a document can be performed by the two lines. By performing at the position, the CCD
13. The image input / output device according to claim 12, wherein the line sensor can obtain different information in the main scanning direction due to the refraction of the parallel flat glass. 18. The image input / output device according to claim 15, wherein the urging member is a spring.