WO2018163249A1 - Dispositif de lecture d'image - Google Patents

Dispositif de lecture d'image Download PDF

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Publication number
WO2018163249A1
WO2018163249A1 PCT/JP2017/008790 JP2017008790W WO2018163249A1 WO 2018163249 A1 WO2018163249 A1 WO 2018163249A1 JP 2017008790 W JP2017008790 W JP 2017008790W WO 2018163249 A1 WO2018163249 A1 WO 2018163249A1
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WO
WIPO (PCT)
Prior art keywords
unit
reading
image
image reading
carrier
Prior art date
Application number
PCT/JP2017/008790
Other languages
English (en)
Japanese (ja)
Inventor
暁 岩山
翔吾 宮野
Original Assignee
株式会社Pfu
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社Pfu filed Critical 株式会社Pfu
Priority to JP2019503840A priority Critical patent/JP6684389B2/ja
Priority to PCT/JP2017/008790 priority patent/WO2018163249A1/fr
Publication of WO2018163249A1 publication Critical patent/WO2018163249A1/fr

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details
    • G03B27/62—Holders for the original
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T1/00—General purpose image data processing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/10—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/10—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces
    • H04N1/107—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces with manual scanning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment

Definitions

  • the technology of the present disclosure relates to an image reading apparatus.
  • An overhead type image reading apparatus that can read an image on a binding medium while turning the binding medium without separating the binding medium is known.
  • Examples of such an image reading apparatus include an apparatus (see Patent Documents 1 to 3) that obtains an image of an original by imaging the original with an image reading unit arranged in one place.
  • the positional relationship between the image reading unit and each area differs in each area on the reading surface of the document, and the manner in which each area appears in the image (brightness, focus) may vary.
  • the disclosed technique has been made in view of the above points, and an object thereof is to provide an image reading apparatus that secures a wide space for handling a document.
  • the image reading apparatus is parallel to a reading plane along which the reading surface of the document is arranged so as to be disposed at each of a plurality of positions and a mounting table on which a mounting surface on which the document is mounted is formed. And an image reading unit supported so as to be able to translate in a certain direction.
  • the image reading unit uses the light traveling along the reading optical axis plane when the image reading unit is disposed at one of the plurality of positions, and the image reading unit uses the light that travels along the reading optical axis plane. An image of one region corresponding to one position is taken.
  • the reading optical axis plane is inclined with respect to the normal line of the reading plane.
  • the disclosed image reading apparatus can secure a wide space for handling a document.
  • FIG. 1 is a side view illustrating the image reading apparatus according to the first embodiment.
  • FIG. 2 is a front view illustrating the image reading apparatus according to the first embodiment.
  • FIG. 3 is a perspective view illustrating the image reading apparatus according to the first embodiment.
  • FIG. 4 is a perspective view illustrating the image reading apparatus according to the first exemplary embodiment when the right placing table is disposed at the V-shaped document right holding position and the left placing table is disposed at the V-shaped document left retaining position.
  • FIG. 5 is a front view illustrating the image reading apparatus according to the first exemplary embodiment when the right placing table is disposed at the V-shaped document right holding position and the left placing table is disposed at the V-shaped document left retaining position.
  • FIG. 1 is a side view illustrating the image reading apparatus according to the first embodiment.
  • FIG. 2 is a front view illustrating the image reading apparatus according to the first embodiment.
  • FIG. 3 is a perspective view illustrating the image reading apparatus according to the first embodiment.
  • FIG. 4 is
  • FIG. 6 is a side view illustrating the image reading apparatus according to the first exemplary embodiment when the right placing table is disposed at the V-shaped document right holding position and the left placing table is disposed at the V-shaped document left holding position.
  • FIG. 7 is a cross-sectional view showing the reading unit.
  • FIG. 8 is a side view illustrating the image reading apparatus according to the first exemplary embodiment when the carrier is arranged at the reading start position.
  • FIG. 9 is a side view illustrating the image reading apparatus according to the first exemplary embodiment when the carrier is disposed at the reading end position.
  • FIG. 10 is a longitudinal sectional view showing a part of the reading unit when the carrier is arranged at the reading start position.
  • FIG. 11 is a cross-sectional view showing a part of the reading unit.
  • FIG. 12 is a longitudinal sectional view showing a part of the reading unit when the carrier is arranged at the reading end position.
  • FIG. 13 is a front view showing the reading unit.
  • FIG. 14 is a front view showing the reading unit when the right optical unit is arranged at the V-character original left reading position and the left optical unit is arranged at the V-character original right reading position.
  • FIG. 15 is a longitudinal sectional view showing the right optical unit.
  • FIG. 16 is a perspective view illustrating the reading optical axis plane of the image reading unit, the first illumination optical axis plane of the first illumination unit, and the second illumination optical axis plane of the second illumination unit.
  • FIG. 17 is a cross-sectional view showing the right optical unit.
  • FIG. 18 is a side view showing the positional relationship between the image reading unit of the right optical unit and the right mounting table.
  • FIG. 19 is a side view illustrating the image reading apparatus according to the first embodiment.
  • FIG. 20 is a side view showing the reading unit.
  • FIG. 21 is a perspective view showing a document in which a three-dimensional shape of a reading surface is detected by a three-dimensional detection sensor.
  • FIG. 22 is a front view showing the presser portion.
  • FIG. 23 is a side view showing the presser portion.
  • FIG. 24 is a front view showing a presser portion in which a V-shaped presser is attached to a presser carrier.
  • FIG. 25 is a side view showing the presser portion in which the V-shaped presser is attached to the presser carrier.
  • FIG. 26 is a perspective view showing an optical unit adjustment jig used when manufacturing the right optical unit.
  • FIG. 27 is a perspective view showing the optical unit fixing portion.
  • FIG. 28 is a perspective view showing a carrier adjustment jig used when manufacturing a carrier.
  • FIG. 29 is a rear view showing the carrier attached to the carrier adjusting jig.
  • FIG. 30 is a front view showing a carrier adjustment jig to which a carrier is attached.
  • FIG. 31 is a side view showing the carrier adjustment jig.
  • FIG. 32 is a block diagram illustrating the image reading apparatus according to the first embodiment.
  • FIG. 33 is a flowchart showing the operation of the image reading apparatus.
  • FIG. 34 is a side view showing the optical unit of the image reading apparatus of the comparative example.
  • FIG. 35 is a graph showing CTF characteristics indicating changes in CTF (Contrast Transfer Function) with respect to changes in the reading angle.
  • FIG. 36 is a graph showing the relationship between the illumination irradiation angle and the image gradation value in black glossy paper.
  • FIG. 37 is a graph showing the relationship between the illumination irradiation angle and the image gradation value in black fine paper.
  • FIG. 38 is a perspective view illustrating the image reading apparatus according to the second embodiment.
  • FIG. 39 is a perspective view illustrating the image reading apparatus according to the third embodiment.
  • FIG. 1 is a side view illustrating the image reading apparatus 1 according to the first embodiment.
  • the image reading apparatus 1 includes a document table 2, a reading unit 3, a reading unit holding unit 5, and a presser unit 6.
  • the document table 2 is placed on the installation surface 7 on which the image reading apparatus 1 is installed.
  • the reading unit 3 is disposed substantially above the document table 2.
  • FIG. 2 is a front view showing the image reading apparatus 1 according to the first embodiment.
  • the reading unit holding unit 5 includes a right side holding unit 11 and a left side holding unit 12.
  • the right holding part 11 is formed in a band shape and is formed in a hollow shape.
  • the right holding unit 11 has one end fixed to a part of the document table 2 and the other end fixed to a part of the reading unit 3.
  • the left holding part 12 is formed in a band shape and is formed in a hollow shape.
  • the left holding unit 12 has one end fixed to a part of the document table 2 and the other end fixed to a part of the reading unit 3.
  • the reading unit holding unit 5 holds the reading unit 3 via the right side holding unit 11 and the left side holding unit 12 so that the reading unit 3 is disposed substantially above the document table 2.
  • FIG. 3 is a perspective view showing the image reading apparatus 1 according to the first embodiment.
  • the document table 2 includes a document table body 14, a right table 15, and a left table 16.
  • the document table body 14 is formed in a box shape, and a storage space (not shown) is formed inside.
  • the document table main body 14 is placed on the installation surface 7.
  • the right mounting table 15 is formed in a plate shape, and a right mounting surface 17 is formed.
  • the right mounting surface 17 is formed flat.
  • the right table 15 is supported by the document table main body 14 so as to be rotatable about the right document table rotation shaft 18 so as to be disposed at the flat document right holding position or the V-shaped document right holding position.
  • the right-side table rotation shaft 18 is parallel to the right-side table 17 and is parallel to the installation surface 7 when the document table main body 14 is placed on the installation surface 7.
  • the right placement surface 17 is parallel to the installation surface 7 when the right placement table 15 is disposed at the flat document right holding position.
  • the left mounting table 16 is formed in a plate shape, and a left mounting surface 19 is formed.
  • the left mounting surface 19 is formed flat.
  • the left table 16 is supported by the document table main body 14 so as to be rotatable about the left document table rotation shaft 20 so as to be arranged at the flat document left holding position or the V-shaped document left holding position.
  • the left mounting table rotation shaft 20 is parallel to the left mounting table 19 and is parallel to the right mounting table rotation shaft 18.
  • the left placement surface 19 is parallel to the installation surface 7 when the left placement table 16 is disposed at the flat document left holding position.
  • the right placing surface 17 and the left placing surface 19 are parallel to the placing surface 7 when the right placing table 15 is disposed at the flat document right holding position and the left placing table 16 is disposed at the flat document left retaining position. Is generally along the same plane.
  • FIG. 4 is a perspective view showing the image reading apparatus 1 according to the first embodiment when the right table 15 is disposed at the V-shaped document right holding position and the left document table 16 is disposed at the V-document left retaining position.
  • the right placement surface 17 is along a plane that is inclined with respect to the installation surface 7 when the right placement table 15 is disposed at the V-shaped document right holding position.
  • the right mounting surface 17 has an end on the side farther from the left mounting table 16 in the right mounting surface 17 than the end closer to the left mounting table 16 in the right mounting surface 17. It inclines with respect to the installation surface 7 so that it may become far from.
  • the angle formed by the right placement surface 17 and the installation surface 7 is approximately 30 degrees.
  • the left placement surface 19 has an end on the side farther from the right placement table 15 of the left placement surface 19 of the left placement surface 19 when the left placement table 16 is arranged at the left-side holding position of the V-shaped document. It is inclined with respect to the installation surface 7 so as to be farther from the installation surface 7 than the end closer to the right mounting table 15.
  • the angle formed by the left placing surface 19 and the setting surface 7 is approximately 30 degrees.
  • FIG. 5 is a front view showing the image reading apparatus 1 according to the first embodiment when the right table 15 is disposed at the V-shaped document right holding position and the left document table 16 is disposed at the V-document left retaining position.
  • the document table 2 further includes a right-side table stopper 21 and a left-side table stopper 22.
  • the right table stopper 21 prevents the right table 15 from rotating about the right table rotation axis 18 when the right table 15 is disposed at the flat document right holding position or the V-shaped document right holding position.
  • the right table 15 is fixed to the document table main body 14.
  • the right-side table stopper 21 further cancels the fixing of the right-side table 15 to the document table body 14 so that the right-side table 15 rotates about the right-side table rotation axis 18 by a user operation.
  • the left-side table stopper 22 prevents the left-side table 16 from rotating about the left-side table rotation axis 20 when the left-side table 16 is disposed at the flat document left side holding position or the V-shaped document left side holding position.
  • the left table 16 is fixed to the document table main body 14.
  • the left-side table stopper 22 further cancels that the left-side table 16 is fixed to the document table body 14 so that the left-side table 16 rotates about the left-side table rotation axis 20 by a user operation. To do.
  • FIG. 6 is a side view showing the image reading apparatus 1 according to the first embodiment when the right table 15 is disposed at the V-shaped document right holding position and the left document table 16 is disposed at the V-document left holding position.
  • the reading unit holding unit 5 includes the right mounting table 15 so that the right mounting table 15 and the left mounting table 16 are not disposed between the right holding unit 11 and the left holding unit 12.
  • the left mounting table 16 are disposed on one side. That is, the right holding unit 11 is disposed on the back side (right side in FIG. 6) from the right mounting surface 17 of the right mounting table 15. One end of the right holding unit 11 is fixed to a portion on the back side of the right table 15 in the document table body 14.
  • the left holding unit 12 is disposed on the back side of the left mounting surface 19 of the left mounting table 16 in the same manner as the right holding unit 11, and one end is located on the back side of the left mounting table 16 in the document table main body 14. It is fixed to the part. That is, the region where the right placement surface 17 and the left placement surface 19 are arranged can be separated by one plane 23 from the region where the reading unit holding unit 5 is arranged.
  • FIG. 7 is a cross-sectional view showing the reading unit 3.
  • the reading unit 3 includes a right carrier cover 31, a right carrier shaft 32, a left carrier cover 33, a left carrier shaft 34, a carrier 35, and a top plate 36.
  • the right carrier cover 31 forms a part of the outer shell of the reading unit 3 on the right holding unit 11 side.
  • the right carrier cover 31 is fixed to the other end of the right holding portion 11 opposite to one end fixed to the document table main body portion 14.
  • the right carrier shaft 32 is formed as a cylindrical bar.
  • the right carrier shaft 32 is arranged inside the right carrier cover 31 so as to follow a straight line parallel to the right mounting table rotation shaft 18.
  • the left carrier cover 33 forms a part of the outer shell of the reading unit 3 on the left holding unit 12 side.
  • the left carrier cover 33 is fixed to the other end of the left holding portion 12 opposite to one end fixed to the document table body 14.
  • the left carrier shaft 34 is formed as a cylindrical bar.
  • the left carrier shaft 34 is disposed inside the left carrier cover 33 so as to be along another straight line parallel to the straight line along which the right carrier shaft 32 is along.
  • the carrier 35 includes a carrier housing 37, a right slider 38, and a left slider 39.
  • the carrier housing 37 is formed in a box shape and is disposed between the right carrier shaft 32 and the left carrier shaft 34.
  • the right slider 38 is fixed to one end of the carrier housing 37 on the right carrier shaft 32 side.
  • the right slider 38 surrounds a part of the right carrier shaft 32 and is translated along the right carrier shaft 32 by being guided by the right carrier shaft 32.
  • the left slider 39 is fixed to one end of the carrier casing 37 on the left carrier shaft 34 side, that is, fixed to the other end of the carrier casing 37 opposite to one end to which the right slider 38 is fixed. Has been.
  • the left slider 39 is placed on the left carrier shaft 34 and guided along the left carrier shaft 34, thereby translating along the left carrier shaft 34.
  • the carrier housing 37 moves in parallel with the right carrier cover 31 and the left carrier cover 33 by the right slider 38 being guided by the right carrier shaft 32 and the left slider 39 being guided by the left carrier shaft 34. That is, the carrier 35 is movably supported on the document table 2 so as to be arranged at the reading start position or the reading end position. At this time, the direction in which the carrier 35 moves in parallel is parallel to the reading plane along the reading surface facing the reading unit 3 among the documents placed on the right table 15 and is placed on the left table 16. Is parallel to a reading plane along a reading surface facing the reading unit 3.
  • the top plate 36 is made of a material that transmits visible light, and has a generally plate shape.
  • the top plate 36 is disposed between the right carrier cover 31 and the left carrier cover 33 so as to cover the upper part of the region in which the carrier 35 moves, and forms a part of the outer shell of the reading unit 3.
  • the top plate 36 is supported by the right carrier cover 31 and the left carrier cover 33.
  • FIG. 8 is a side view showing the image reading apparatus 1 according to the first embodiment when the carrier 35 is arranged at the reading start position.
  • the carrier 35 is arranged at the reading start position as shown in FIG. 8 by moving in parallel to the back side.
  • FIG. 9 is a side view showing the image reading apparatus 1 according to the first embodiment when the carrier 35 is disposed at the reading end position.
  • the carrier 35 is arranged at the reading end position as shown in FIG. 9 by moving in parallel to the front side.
  • FIG. 10 is a longitudinal sectional view showing a part of the reading unit 3 when the carrier 35 is arranged at the reading start position.
  • the reading unit 3 further includes a left carrier shaft adjusting unit 41, a front pulley 42, a rear pulley 43, a belt 44, a carrier driving unit 45, and a flexible cable portion 46.
  • the left carrier axis adjustment unit 41 is disposed on the front side of the left carrier cover 33. One end of the front side of the left carrier shaft 34 is fixed to the left carrier shaft adjustment portion 41. One end on the back side of the left carrier shaft 34 is fixed to the left carrier cover 33. For this reason, the direction of the left carrier shaft 34 is changed when the left carrier shaft adjusting portion 41 moves relative to the left carrier cover 33.
  • the left carrier shaft adjusting portion 41 is fixed to the left carrier cover 33 via a fastening member (not shown).
  • the fastening member include a bolt and a nut. That is, one end on the front side of the left carrier shaft 34 is indirectly fixed to the left carrier cover 33 via the left carrier shaft adjustment portion 41.
  • the front pulley 42 is disposed in the vicinity of the front end of the left carrier shaft 34 in the left carrier cover 33.
  • the back pulley 43 is disposed in the vicinity of the end on the back side of the left carrier shaft 34 in the left carrier cover 33.
  • the belt 44 is formed from a loop-shaped band. The belt 44 is disposed inside the left carrier cover 33 and is bridged between the front pulley 42 and the rear pulley 43. Further, a part of the belt 44 is joined to the left slider 39.
  • the carrier driving unit 45 is formed of, for example, a motor.
  • the carrier drive unit 45 moves the belt 44 so that the front pulley 42 and the back pulley 43 rotate. Since the left slider 39 is joined to the belt 44, the carrier 35 moves in parallel with the document table 2 when the belt 44 moves. That is, the carrier driving unit 45 moves the belt 44 in parallel along the right carrier shaft 32 and the left carrier shaft 34 by moving the belt 44.
  • the carrier driving unit 45 further detects a position where the carrier 35 is disposed.
  • the flexible cable portion 46 is formed in a thin strip shape and is bendable.
  • the flexible cable portion 46 has one end fixed to the carrier 35 and the other end fixed to the left carrier cover 33.
  • FIG. 11 is a cross-sectional view showing a part of the reading unit 3. As shown in FIG. 11, the flexible cable portion 46 is disposed below the left carrier shaft 34 and the belt 44 in the left carrier cover 33. That is, the left carrier cover 33 covers the left carrier shaft 34, the front pulley 42, the rear pulley 43, the belt 44, and the flexible cable portion 46.
  • the flexible cable portion 46 is used to connect information devices so that information can be transmitted.
  • FIG. 12 is a longitudinal sectional view showing a part of the reading unit 3 when the carrier 35 is arranged at the reading end position.
  • the flexible cable portion 46 is formed in another shape different from the shape when the carrier 35 is arranged at the reading start position when the carrier 35 is arranged at the reading end position. ing. That is, the flexible cable portion 46 is deformed when the carrier 35 moves with respect to the document table 2.
  • the reading unit 3 further includes a right carrier axis adjusting unit (not shown).
  • the right carrier shaft adjustment unit is attached to the right carrier cover 31 in the same manner as the left carrier shaft adjustment unit 41.
  • the right carrier shaft adjusting portion is disposed on the front side of the right carrier cover 31.
  • One end on the front side of the right carrier shaft 32 is fixed to the right carrier shaft adjusting portion.
  • One end on the far side of the right carrier shaft 32 is fixed to the right carrier cover 31.
  • the right carrier shaft adjusting portion is fixed to the right carrier cover 31 via a fastening member (not shown). Examples of the fastening member include a bolt and a nut. That is, one end on the near side of the right carrier shaft 32 is indirectly fixed to the right carrier cover 31 via the right carrier shaft adjustment portion.
  • FIG. 13 is a front view showing the reading unit 3.
  • the carrier 35 includes a right optical unit 51, a left optical unit 52, and an optical unit driving unit 53.
  • the right optical unit 51 is disposed in a region on the right holding unit 11 side in the carrier housing 37.
  • the right optical unit 51 is supported by the carrier housing 37 so as to be rotatable about the right optical unit rotation shaft 54 so as to be disposed at the flat document right reading position or the V-shaped document left reading position.
  • the right optical unit rotation shaft 54 is parallel to the left mounting table rotation shaft 20.
  • the right optical unit 51 faces the right mounting table 15.
  • the direction 56 in which the right optical unit 51 faces is when the right optical unit 51 is arranged at the flat document right reading position and when the right table 15 is arranged at the flat document right holding position. 15 is perpendicular to the right mounting surface 17.
  • the left optical unit 52 is disposed in a region on the left holding unit 12 side in the carrier housing 37.
  • the left optical unit 52 is supported by the carrier housing 37 so as to be rotatable about the left optical unit rotation shaft 55 so as to be arranged at the flat document left reading position or the V-shaped document right reading position.
  • the left optical unit rotation shaft 55 is parallel to the right mounting table rotation shaft 18.
  • the left optical unit 52 faces the left placing table 16 when it is disposed at the flat document left reading position.
  • the direction 57 in which the left optical unit 52 faces is when the left optical unit 52 is disposed at the flat document left reading position and when the left document mounting 16 is disposed at the flat document left holding position. 16 is perpendicular to the left side mounting surface 19.
  • the optical unit driving unit 53 is formed of, for example, a motor.
  • the optical unit driving unit 53 is disposed approximately at the center of the inside of the carrier housing 37 and is disposed between the right optical unit 51 and the left optical unit 52.
  • the optical unit driving unit 53 rotates the right optical unit 51 around the right optical unit rotation shaft 54 and rotates the left optical unit 52 around the left optical unit rotation shaft 55.
  • the optical unit driving unit 53 further detects a position where the right optical unit 51 is disposed, and detects a position where the left optical unit 52 is disposed.
  • FIG. 14 is a front view showing the reading unit 3 when the right optical unit 51 is arranged at the left reading position of the V-shaped original and the left optical unit 52 is arranged at the right reading position of the V-shaped original.
  • the right optical unit 51 faces the left placing table 16 when it is disposed at the left reading position of the V-shaped document.
  • the direction 58 in which the right optical unit 51 faces is when the right optical unit 51 is disposed at the V-shaped document left side reading position, and when the left placement table 16 is disposed at the V-shaped document left side holding position. It is perpendicular to the left mounting surface 19 of the mounting table 16.
  • the left optical unit 52 faces the right table 15 when it is disposed at the right reading position of the V-shaped document.
  • the direction 59 in which the left optical unit 52 faces is when the left optical unit 52 is placed at the V-shaped original right reading position and when the right placement table 15 is placed at the V-shaped original right holding position, It is perpendicular to the right mounting surface 17 of the mounting table 15.
  • FIG. 15 is a longitudinal sectional view showing the right optical unit 51.
  • the right optical unit 51 includes an optical unit housing 61, an image reading unit 62, a lens 63, a focus adjustment unit 64, a first illumination unit 65, and a second illumination unit 66. Yes.
  • the optical unit housing 61 is generally formed in a rectangular parallelepiped shape, and a storage space is formed therein.
  • the image reading unit 62 is formed of a CCD (Charge Coupled Device).
  • the image reading unit 62 is disposed inside the optical unit casing 61 and is fixed to the optical unit casing 61 by a fastening member (not shown).
  • the lens 63 is disposed inside the optical unit casing 61 and is disposed in a region where the image reading unit 62 is directed.
  • the lens 63 is movably supported by the optical unit housing 61 so that the lens 63 can approach the image reading unit 62 or move away from the image reading unit 62.
  • the image reading unit 62 uses the light that passes through the lens 63 to capture an image of a subject that is placed in a region to which the image reading unit 62 is directed.
  • the focus adjustment unit 64 is disposed inside the optical unit housing 61 and moves the lens 63 closer to the image reading unit 62 or moves the lens 63 away from the image reading unit 62. The focus when the image reading unit 62 captures an image of the subject is adjusted by moving the lens 63 by the focus adjustment unit 64.
  • the first illumination unit 65 is disposed inside the optical unit casing 61 and is fixed to the optical unit casing 61 by a fastening member (not shown).
  • the first illumination unit 65 is fixed to the image reading unit 62 via the optical unit casing 61 by being fixed to the optical unit casing 61.
  • the second illumination unit 66 is disposed inside the optical unit housing 61, and is disposed such that the image reading unit 62 is disposed between the first illumination unit 65 and the second illumination unit 66.
  • the 2nd illumination part 66 is being fixed to the optical unit housing
  • the second illumination unit 66 is fixed to the image reading unit 62 via the optical unit casing 61 by being fixed to the optical unit casing 61.
  • FIG. 16 is a perspective view showing a reading optical axis plane 67 of the image reading unit 62, a first illumination optical axis plane 68 of the first illumination unit 65, and a second illumination optical axis plane 69 of the second illumination unit 66.
  • the image reading unit 62 is arranged so as to capture an image of a subject using light traveling along a reading optical axis plane 67, that is, reading the surface of the subject.
  • An image of the reading line region 70 intersecting the optical axis plane 67 is taken.
  • the first illumination unit 65 illuminates the reading line region 70 imaged by the image reading unit 62 by emitting light that travels along the first illumination optical axis plane 68.
  • the second illumination unit 66 illuminates the reading line region 70 imaged by the image reading unit 62 by emitting light that travels along the second illumination optical axis plane 69.
  • the reading optical axis plane 67, the first illumination optical axis plane 68, and the second illumination optical axis plane 69 overlap each other. That is, the first illumination unit 65 illuminates the reading line area 70 imaged by the image reading unit 62 by emitting light that travels along the reading optical axis plane 67.
  • the second illumination unit 66 illuminates the reading line region 70 imaged by the image reading unit 62 by emitting light that travels along the reading optical axis plane 67.
  • FIG. 17 is a cross-sectional view showing the right optical unit 51.
  • the optical unit housing 61 is formed with a front projection 71 and a back projection 72.
  • the near side protrusion 71 protrudes from the near side member of the optical unit housing 61 toward the near side.
  • the near side protrusion 71 is rotatably supported by the carrier housing 37.
  • the back side protrusion 72 protrudes from the back side member of the optical unit housing 61 to the back side.
  • the back projection 72 is rotatably supported by the carrier housing 37.
  • the optical unit housing 61 is supported by the carrier housing 37 so as to be rotatable about the right optical unit rotation shaft 54 by the front projection 71 and the back projection 72 being rotatably supported by the carrier housing 37. Has been.
  • the image reading unit 62 is arranged such that the reading optical axis plane 67 is not perpendicular to the right optical unit rotation axis 54, and the reading optical axis plane 67 is arranged at a predetermined position with respect to the optical unit housing 61.
  • the optical unit housing 61 is fixed.
  • FIG. 18 is a side view showing the positional relationship between the image reading unit 62 of the right optical unit 51 and the right mounting table 15. Since the reading optical axis plane 67 is not perpendicular to the right optical unit rotation axis 54, the reading optical axis plane 67 of the right optical unit 51 has the right mounting surface 17 as shown in FIG. The normal line 73 is inclined. That is, the image reading unit 62 of the right optical unit 51 is arranged so that the reading angle 74 formed by the normal 73 and the reading optical axis plane 67 does not become 0 degrees, and is fixed to the optical unit housing 61.
  • the right optical unit 51 has a reading angle 74 when the right table 15 is disposed at the flat document right holding position and the right optical unit 51 is disposed at the flat document right reading position. It is formed to be 20 degrees.
  • the right optical unit 51 further has a reading angle 74 when the left stage 16 is disposed at the V-shaped document left holding position and when the right optical unit 51 is disposed at the V-shaped document left reading position. It is formed to be 20 degrees.
  • the left optical unit 52 is formed in the same manner as the right optical unit 51. That is, the left optical unit 52 includes an optical unit housing 61, an image reading unit 62, a lens 63, a focus adjustment unit 64, a first illumination unit 65, and a second illumination unit 66.
  • the left optical unit 52 has a reading angle 74 of 20 degrees when the left table 16 is disposed at the flat document left holding position and the left optical unit 52 is disposed at the flat document left reading position. So that it is formed.
  • the left optical unit 52 further has a reading angle 74 when the right table 15 is arranged at the V-shaped original right holding position and when the left optical unit 52 is arranged at the V-character right reading position. It is formed to be 20 degrees.
  • FIG. 19 is a side view showing the image reading apparatus 1 according to the first embodiment.
  • the reading optical axis plane 67 of the right optical unit 51 or the left optical unit 52 is, as shown in FIG. 19, when the carrier 35 is placed at the reading start position. Cross the back end of our house.
  • the reading optical axis plane 67 of the right optical unit 51 or the left optical unit 52 intersects the front end of the right mounting table 15 or the left mounting table 16 when the carrier 35 is disposed at the reading end position.
  • the carrier 35 When the carrier 35 is arranged at the reading end position because the reading optical axis plane 67 is inclined to the normal line of the right mounting surface 17 and the normal line of the left mounting table 16, It is not arranged at the upper part of the front side end of the document table 2 but is arranged at the back side from the upper part of the front side end of the document table 2. That is, the carrier 35 is not disposed on the upper end of the near side of the document table 2 when moving between the reading start position and the reading end position.
  • the outer shell of the reading unit 3, the right carrier shaft 32, and the left carrier shaft 34 are arranged so that the carrier 35 is not disposed above the front end of the document table 2, so that the front end of the document table 2 is located. There is no need to be placed on top of. Since the reading unit 3 is not disposed above the near side area of the document table 2, the user can work in handling the object in the space between the document table 2 and the reading unit 3. For example, an object can be easily handled in the space between the document table 2 and the reading unit 3.
  • the carrier 35 can be arranged at a plurality of reading positions between the reading start position and the reading end position by moving in parallel with the document table 2.
  • the plurality of reading positions are arranged at equal intervals between the reading start position and the reading end position.
  • the reading surface of the document placed on the document table 2 that faces the reading unit 3 has a plurality of right reading line regions corresponding to a plurality of reading positions and a plurality of left reading line regions corresponding to a plurality of reading positions. And filled with.
  • One right reading line area corresponding to a certain reading position among the plurality of right reading line areas is an area captured by the image reading unit 62 of the right optical unit 51 when the carrier 35 is disposed at the reading position. Is shown.
  • One left reading line area corresponding to a certain reading position among the plurality of left reading line areas is an area captured by the image reading unit 62 of the left optical unit 52 when the carrier 35 is disposed at the reading position. Is shown.
  • FIG. 20 is a side view showing the reading unit 3.
  • the reading unit 3 further includes a three-dimensional detection sensor 75.
  • the three-dimensional detection sensor 75 includes a laser oscillator 76 and a camera 77.
  • the laser oscillator 76 is disposed at the front end of the reading unit 3 and is supported by the outer shell of the reading unit 3.
  • the laser oscillator 76 emits a line laser traveling along a plurality of laser planes.
  • the plurality of laser planes are such that a plurality of intersecting lines intersecting the plurality of laser planes and the right mounting surface 17 are arranged at a predetermined interval, and a plurality of laser planes intersecting the left mounting surface 19 Are arranged so that the intersecting lines are arranged at predetermined intervals.
  • a line laser that travels along one laser plane 78 of the plurality of laser planes is emitted by a line laser that travels along a plurality of other laser planes different from the laser plane 78 of the plurality of laser planes. Radiated at another timing different from the timing.
  • the camera 77 is disposed at the back end of the reading unit 3, faces the document table 2, and is fixed to the outer shell of the reading unit 3. The camera 77 captures an image of a document placed on the document table 2.
  • FIG. 21 is a perspective view showing a document 79 from which the three-dimensional shape of the reading surface is detected by the three-dimensional detection sensor 75.
  • the laser oscillator 76 emits a line laser that travels along the laser plane 78 when the document 79 is placed on the document table 2, so that the line laser is applied to the document 79. Irradiate.
  • a portion 80 of the document 79 irradiated with the line laser diffuses the line laser.
  • the camera 77 captures an image of the document 79 when the document 79 is placed on the document table 2 and the document 79 is irradiated with a line laser.
  • the image of the portion 80 is projected so that the portion 80 can be distinguished from other portions because the portion 80 diffusely reflects the line laser.
  • the three-dimensional position where the portion 80 is arranged is calculated based on the position where the laser plane 78 is arranged and the position where the portion irradiated with the line laser in the document 79 is projected on the image by the triangulation method. Is done.
  • the three-dimensional shape of the reading surface of the document 79 facing the reading unit 3 includes the positions of a plurality of laser planes along which the line laser is aligned and a plurality of positions corresponding to the plurality of laser planes in the image captured by the camera 77. Based on the above. A position corresponding to a laser plane among the plurality of positions indicates a position where a portion of the document 79 irradiated with a line laser traveling along the laser plane is projected on the image.
  • FIG. 22 is a front view showing the presser unit 6.
  • FIG. 23 is a side view showing the presser unit 6.
  • the presser unit 6 includes a right presser guide 81, a left presser guide 82, a presser carrier 83, a flat presser 84, and a flat presser mounting portion 85.
  • the right presser guide 81 is formed in a rod shape, and is arranged along a straight line parallel to the presser moving direction 86 as shown in FIG.
  • the left presser guide 82 is formed in a rod shape and is arranged along a straight line parallel to the presser moving direction 86.
  • the presser moving direction 86 is parallel to the reading optical axis plane 67 when the right optical unit 51 is disposed at the flat document right reading position and the left optical unit 52 is disposed at the flat document left reading position.
  • the presser moving direction 86 is further perpendicular to the direction in which the right optical unit 51 and the left optical unit 52 are arranged.
  • the presser carrier 83 is supported by the right presser guide 81 and the left presser guide 82 so as to be movable in parallel with the presser moving direction 86 so as to be disposed at the retracted position or the close contact position.
  • the presser carrier 83 When the presser carrier 83 is disposed at the retracted position, the presser carrier 83 moves to the contact position by approaching the document table 2, and when disposed at the contact position, the presser carrier 83 moves to the retracted position by approaching the reading unit 3. .
  • the flat presser 84 is formed of a material that transmits visible light, and is formed in a flat plate shape.
  • the flat presser mounting portion 85 is joined to the flat presser 84 and fixed to the flat presser 84.
  • the flat presser attachment portion 85 attaches the flat presser 84 to the presser carrier 83 or removes the flat presser 84 from the presser carrier 83.
  • the flat presser attachment portion 85 fixes the flat presser 84 to the presser carrier 83 when the flat presser 84 is attached to the presser carrier 83.
  • the flat presser 84 is arranged along a plane parallel to the installation surface 7.
  • the presser unit 6 further includes a lock pin (not shown).
  • the lock pin is fixed to the right presser guide 81 and the left presser guide 82 so that the presser carrier 83 does not move when the presser carrier 83 is disposed at the retracted position or the close contact position.
  • the lock pin releases the presser carrier 83 from being fixed to the right presser guide 81 and the left presser guide 82 so that the presser carrier 83 is moved by a user operation.
  • the presser unit 6 further includes a right presser guide cover 87 and a left presser guide cover 88 as shown in FIG.
  • the right presser guide cover 87 covers an area where the right presser guide 81 is disposed, and separates an area where the right presser guide 81 is disposed from the outside of the image reading apparatus 1.
  • the left presser guide cover 88 covers an area where the left presser guide 82 is disposed, and separates an area where the left presser guide 82 is disposed from the outside of the image reading apparatus 1.
  • the presser unit 6 further includes a weight 91, a pulley 93, a wire 92, and a weight cover 94.
  • the weight 91 is formed so that the weight of the weight 91 is approximately equal to the sum of the weight of the flat presser 84, the weight of the flat presser mounting portion 85, and the weight of the presser carrier 83.
  • the pulley 93 is supported by the right side holding part 11 and the left side holding part 12. One end of the wire 92 is joined to the weight 91, the other end is joined to the presser carrier 83, and is hung on the pulley 93. For this reason, the weight 91 moves up and down when the presser carrier 83 moves between the retracted position and the contact position.
  • the weight cover 94 is made of a material that transmits visible light.
  • the weight cover 94 covers an area where the weight 91 moves, separates the area where the weight 91 moves from the document table 2, and separates the area where the weight 91 moves from the outside of the image reading apparatus 1.
  • FIG. 24 is a front view showing the presser unit 6 in which the V-shaped presser 95 is attached to the presser carrier 83.
  • FIG. 25 is a side view showing the presser portion 6 in which the V-shaped presser 95 is attached to the presser carrier 83.
  • the presser portion 6 further includes a V-shaped presser 95 and a V-shaped presser mounting portion 96 as shown in FIG.
  • the V-shaped presser 95 includes a right presser 97 and a left presser 98.
  • the right presser 97 is made of a material that transmits visible light, and is formed in a flat plate shape.
  • the left presser 98 is made of a material that transmits visible light, and is formed in a flat plate shape.
  • the left presser 98 is joined to the right presser 97 so that a plane along which the left presser 98 and a plane along the right presser 97 intersect at a predetermined angle.
  • the V-shaped presser mounting portion 96 is joined to the right-side presser 97 and the left-side presser 98, that is, fixed to the V-shaped presser 95.
  • the V-shaped presser attaching portion 96 attaches the V-shaped presser 95 to the presser carrier 83 or removes the V-shaped presser 95 from the presser carrier 83.
  • the V-shaped presser mounting portion 96 fixes the V-shaped presser 95 to the presser carrier 83 when the V-shaped presser 95 is mounted on the presser carrier 83.
  • the V-shaped presser 95 is attached to the presser carrier 83 via the V-shaped presser mounting portion 96, and the right presser 97 is placed on the right side when the right side placing table 15 is arranged at the V-shaped original right side holding position. It is formed so as to be parallel to the surface 17.
  • the V-shaped presser 95 is attached to the presser carrier 83 via the V-shaped presser mounting portion 96, and the left-side presser 98 is placed on the left-hand side when the left-side placing table 16 is placed at the left-side holding position of the V-shaped document. It is formed so as to be parallel to the surface 19.
  • FIG. 26 is a perspective view showing an optical unit adjustment jig 101 used when the right optical unit 51 is manufactured.
  • the optical unit adjustment jig 101 includes a base unit 102, an optical unit fixing unit 103, and a virtual subject unit 104, as shown in FIG.
  • the base portion 102 is formed in a rod shape.
  • the optical unit fixing part 103 is fixed to a part of the base part 102.
  • the virtual subject part 104 is fixed to a part of the base part 102.
  • FIG. 27 is a perspective view showing the optical unit fixing portion 103.
  • the optical unit fixing portion 103 includes a front side protrusion fixing portion 105 and a back side protrusion fixing portion 106.
  • the near-side protrusion fixing portion 105 fixes the near-side protrusion 71 of the right optical unit 51 to the base portion 102.
  • the back-side protrusion fixing portion 106 fixes the back-side protrusion 72 of the right optical unit 51 to the base portion 102.
  • the right optical unit 51 is fixed to the base 102 by fixing the front protrusion 71 by the front protrusion fixing part 105 and fixing the back protrusion 72 by the back protrusion fixing part 106.
  • the optical unit adjustment jig 101 is formed so that the image reading unit 62 appropriately captures the image of the virtual subject unit 104 when the appropriately manufactured right optical unit 51 is fixed to the optical unit fixing unit 103. Has been.
  • the user arranges the image reading unit 62 so that the image reading unit 62 appropriately captures the image of the virtual subject unit 104 when the right optical unit 51 is fixed to the optical unit fixing unit 103, and the fastening member
  • the image reading unit 62 is fixed to the optical unit housing 61 via
  • the user further arranges the first illumination unit 65 so that the first illumination unit 65 appropriately illuminates the virtual subject unit 104,
  • the first illumination unit 65 is fixed to the optical unit casing 61 via the fastening member.
  • the user further arranges the second illumination unit 66 so that the second illumination unit 66 appropriately illuminates the virtual subject unit 104
  • the 2nd illumination part 66 is fixed to the optical unit housing
  • the image reading unit 62, the first illumination unit 65, and the second illumination unit 66 are fixed to the optical unit housing 61 in this manner, so that the image reading unit 62, the first illumination unit 65, The 2nd illumination part 66 is arrange
  • the right optical unit 51 includes an image reading unit 62, a first illumination unit 65, and a second illumination unit 66, so that the document placed on the document table 2 when mounted on the carrier 35. Is appropriately illuminated, and an image of the original can be appropriately captured.
  • the left optical unit 52 is manufactured in the same manner as the right optical unit 51. That is, in the left optical unit 52, the image reading unit 62, the first illumination unit 65, and the second illumination unit 66 are fixed to the optical unit housing 61 using the optical unit adjustment jig 101.
  • the left optical unit 52 uses the optical unit adjustment jig 101 to fix the image reading unit 62, the first illumination unit 65, and the second illumination unit 66 to the optical unit housing 61.
  • the 1 illumination part 65 and the 2nd illumination part 66 are arrange
  • the left optical unit 52 includes an image reading unit 62, a first illumination unit 65, and a second illumination unit 66, so that the document placed on the document table 2 when mounted on the carrier 35. Is appropriately illuminated, and an image of the original can be appropriately captured.
  • FIG. 28 is a perspective view showing the carrier adjustment jig 111 used when the carrier 35 is manufactured.
  • the carrier adjustment jig 111 includes a gantry 112, a carrier fixing portion 113, and a virtual subject portion 114.
  • the carrier fixing portion 113 includes a right slider fixing portion 115 and a left slider fixing portion 116.
  • the right slider fixing portion 115 is formed in the same shape as a part of the right carrier shaft 32.
  • the right slider fixing portion 115 is fixed to the gantry 112.
  • the right slider fixing portion 115 fixes the right slider 38 of the carrier 35.
  • the left slider fixing portion 116 is formed in the same shape as a part of the left carrier shaft 34.
  • the left slider fixing portion 116 is fixed to the gantry 112.
  • the left slider fixing portion 116 fixes the left slider 39 of the carrier 35.
  • the virtual subject portion 114 is disposed below the gantry 112 and is fixed to the gantry 112.
  • FIG. 29 is a rear view showing the carrier 35 attached to the carrier adjustment jig 111.
  • the carrier 35 further includes a right optical unit back side protrusion fixing portion 117 and a left optical unit back side protrusion fixing portion 118.
  • the right optical unit back side protrusion fixing portion 117 is disposed on the back side of the carrier housing 37 and is fixed to the carrier housing 37.
  • the right side optical unit back side protrusion fixing portion 117 rotatably supports the back side protrusion 72 of the right optical unit 51.
  • the left optical unit back projection fixing portion 118 is disposed on the back side of the carrier housing 37 and is fixed to the carrier housing 37.
  • the left-side optical unit back-side protrusion fixing portion 118 rotatably supports the back-side protrusion 72 of the left-side optical unit 52.
  • FIG. 30 is a front view showing the carrier adjustment jig 111 to which the carrier 35 is attached.
  • the carrier 35 further includes a right optical unit rotation axis adjustment unit 121, a right fastening member 122, a left optical unit rotation axis adjustment unit 123, and a left fastening member 124.
  • the right optical unit rotation axis adjustment unit 121 is disposed on the front side of the carrier housing 37.
  • the right optical unit rotation axis adjustment unit 121 rotatably supports the front protrusion 71 of the right optical unit 51. That is, the right optical unit rotation shaft adjusting unit 121 moves relative to the carrier housing 37 to change the direction of the right optical unit rotation shaft 54.
  • the right side fastening member 122 is formed of a bolt and a nut, and is fastened to fix the right side optical unit rotation axis adjusting unit 121 to the carrier housing 37.
  • the left optical unit rotation axis adjustment unit 123 is disposed on the front side of the carrier housing 37.
  • the left optical unit rotation axis adjustment unit 123 rotatably supports the front protrusion 71 of the left optical unit 52. That is, the left optical unit rotation shaft adjusting unit 123 moves relative to the carrier housing 37 to change the direction of the left optical unit rotation shaft 55.
  • the left fastening member 124 is formed of a bolt and a nut and fastened to fix the left optical unit rotation axis adjusting unit 123 to the carrier housing 37.
  • FIG. 31 is a side view showing the carrier adjustment jig 111.
  • the virtual subject portion 114 has a virtual reading line region 125 formed therein.
  • the reading optical axis plane 67 of the right optical unit 51 and the reading optical axis plane 67 of the left optical unit 52 are virtual. It is formed so as to cross the reading line region 125.
  • the carrier adjustment jig 111 appropriately displays the image of the virtual reading line region 125 of the virtual subject unit 114 when the right carrier unit 51 and the left side optical unit 52 are fixed to the carrier fixing unit 113. It is formed to take an image.
  • the user captures an image of the virtual subject unit 114 using the image reading unit 62 of the right optical unit 51 when the carrier 35 is fixed to the carrier fixing unit 113.
  • the user moves the right optical unit rotation axis adjustment unit 121 when the virtual reading line region 125 is not properly projected on the image captured using the image reading unit 62 of the right optical unit 51.
  • the user captures the image of the virtual subject unit 114 again using the image reading unit 62 of the right optical unit 51 after the right optical unit rotation axis adjusting unit 121 is fixed at another position of the carrier housing 37.
  • the user moves the right optical unit rotation axis adjustment unit 121 and moves the image of the right optical unit 51 until the virtual reading line region 125 is appropriately projected on the image captured using the image reading unit 62 of the right optical unit 51.
  • the imaging using the reading unit 62 is repeatedly executed.
  • the right optical unit rotation axis adjusting unit 121 is fixed to the carrier housing 37 using the carrier adjusting jig 111, so that the right optical unit 51 is appropriately disposed with respect to the carrier housing 37.
  • the user captures an image of the virtual subject unit 114 using the image reading unit 62 of the left optical unit 52 when the carrier 35 is fixed to the carrier fixing unit 113.
  • the user moves the left optical unit rotation axis adjustment unit 123 when the virtual reading line region 125 is not properly projected on the image captured using the image reading unit 62 of the left optical unit 52.
  • the user takes an image of the virtual subject unit 114 again using the image reading unit 62 of the left optical unit 52.
  • the user moves the left optical unit rotation axis adjustment unit 123 and moves the image of the left optical unit 52 until the virtual read line area 125 is appropriately projected on the image captured using the image reading unit 62 of the left optical unit 52.
  • the imaging using the reading unit 62 is repeatedly executed.
  • the left optical unit rotation axis adjusting unit 123 is fixed to the carrier housing 37 using the carrier adjusting jig 111, so that the left optical unit 52 is appropriately disposed with respect to the carrier housing 37.
  • Adjustment method of right carrier shaft 32 and left carrier shaft 34 When the user adjusts the direction of the left carrier shaft 34, first, the user loosens the fastening member that fixes the left carrier shaft adjustment portion 41 to the left carrier cover 33. The user changes the direction of the left carrier shaft 34 to a predetermined direction by moving the left carrier shaft adjustment unit 41 after the fastening member is loosened. The user fastens the fastening member in a state where the left carrier shaft 34 is oriented in a predetermined direction, and fixes the left carrier shaft adjustment portion 41 to the left carrier cover 33.
  • the user can adjust the orientation of the right carrier shaft 32 in the same manner as the left carrier shaft 34. That is, the user first loosens the fastening member that fixes the right carrier shaft adjustment portion to the right carrier cover 31. After the fastening member is loosened, the user changes the direction of the right carrier shaft 32 to a predetermined direction by moving the right carrier shaft adjustment unit. The user fastens the fastening member with the right carrier shaft 32 facing the predetermined direction, and fixes the right carrier shaft adjustment portion to the right carrier cover 31.
  • the image reading apparatus 1 can appropriately arrange the right carrier axis 32 and the left carrier axis 34 by providing the left carrier axis adjustment unit 41 and the right carrier axis adjustment unit.
  • the image reading apparatus 1 can appropriately move the carrier 35 even when a manufacturing error occurs in the dimensions of the components by appropriately arranging the right carrier shaft 32 and the left carrier shaft 34.
  • FIG. 32 is a block diagram illustrating the image reading apparatus 1 according to the first embodiment.
  • the image reading apparatus 1 further includes an apparatus control unit 131.
  • the apparatus control unit 131 is disposed in a storage space formed inside the document table body 14.
  • the device control unit 131 is connected to the carrier 35 via a carrier cable so that information can be transmitted.
  • the carrier cable includes a flexible cable portion 46 and includes a fixed cable portion not shown.
  • the fixed cable portion is disposed along the left holding portion 12 and is disposed inside the hollow portion of the left holding portion 12.
  • the device control unit 131 is further connected to the carrier driving unit 45 and the three-dimensional detection sensor 75 via another cable so as to be able to transmit information.
  • the apparatus control unit 131 is a computer, and includes a CPU (Central Processing Unit) 132, a storage unit 133, a communication unit 134, a reading start switch 135, and a display unit 136.
  • the CPU 132 executes information processing by executing a computer program installed in the apparatus control unit 131 and controls the storage unit 133, the communication unit 134, the reading start switch 135, and the display unit 136.
  • the CPU 132 further controls the carrier driving unit 45, the three-dimensional detection sensor 75, the right optical unit 51, the left optical unit 52, and the optical unit driving unit 53 by executing the computer program.
  • the storage unit 133 records the computer program and records information used by the CPU 132.
  • a memory such as a RAM / ROM, a fixed disk device such as a hard disk, an SSD (Solid State Drive), an optical disk, or the like can be used.
  • the communication unit 134 outputs information received from the external device to the CPU 132 by communicating with the device control unit 131 and a separate external device via wireless communication, and transmits the information created by the CPU 132 to the external device.
  • Examples of the wireless communication include a mobile phone network, Bluetooth (registered trademark), NFC (Near Field Communication), infrared communication, and the like.
  • the reading start switch 135 is exposed to the outside of the document table body 14. When the reading start switch 135 is pressed by the user, the reading start switch 135 outputs a signal indicating that the reading start switch 135 has been pressed to the CPU 132.
  • the display unit 136 includes a display surface exposed to the outside of the platen main body unit 14 and displays an image created by the CPU 132 on the display surface.
  • the CPU 132 may be composed of another control circuit that controls the device control unit 131 in an integrated manner.
  • the control circuit includes a GPU (Graphics Processing Unit), a DSP (Digital Signal Processor), an LSI (Large Scale Integration), an ASIC (Application Specific IntegratedFlag), and an ASIC (Application Specific Integrated Circuit). Is done.
  • the computer program installed in the device control unit 131 is formed of a plurality of computer programs for causing the device control unit 131 to realize a plurality of functions.
  • the plurality of functions include a carrier drive control unit 141, an optical unit rotation control unit 142, an illumination control unit 143, an image reading control unit 144, a three-dimensional detection unit 145, and an image processing unit 146.
  • the carrier drive control unit 141 controls the carrier drive unit 45 so that the carrier 35 is arranged at the reading start position.
  • the carrier drive control unit 141 further controls the carrier drive unit 45 so that the carrier 35 moves from the reading start position to the reading end position at a predetermined speed.
  • the optical unit rotation control unit 142 controls the optical unit driving unit 53 so that the position where the right optical unit 51 is disposed is detected and the position where the left optical unit 52 is disposed is detected. .
  • the optical unit rotation control unit 142 controls the optical unit driving unit 53 so that the right optical unit 51 is disposed at the flat document right reading position and the left optical unit 52 is disposed at the flat document left reading position.
  • the optical unit rotation control unit 142 includes an optical unit driving unit so that the right optical unit 51 is disposed at the V-shaped document left side reading position and the left optical unit 52 is disposed at the V-shaped document right side reading position. 53 is controlled.
  • the illumination control unit 143 controls the right optical so that the area to which the image reading unit 62 of the right optical unit 51 is directed is illuminated when the carrier 35 moves from the reading start position to the reading end position at a predetermined speed.
  • the first illumination unit 65 and the second illumination unit 66 of the unit 51 are controlled.
  • the illumination control unit 143 illuminates the region to which the image reading unit 62 of the left optical unit 52 is directed.
  • the first illumination unit 65 and the second illumination unit 66 of the unit 52 are controlled.
  • the image reading control unit 144 further controls the focus adjustment unit 64 of the right optical unit 51 so that the focus of the image reading unit 62 of the right optical unit 51 is adjusted.
  • the image reading control unit 144 captures an image on which a part of the reading surface of the document placed on the table on which the right optical unit 51 is directed is captured.
  • the image reading control unit 144 further controls the focus adjustment unit 64 of the left optical unit 52 so that the focus of the image reading unit 62 of the left optical unit 52 is adjusted.
  • the image reading control unit 144 captures an image in which a part of the reading surface of the document placed on the table on which the left optical unit 52 is directed is imaged. To control.
  • the three-dimensional detection unit 145 controls the three-dimensional detection sensor 75 so that a rough three-dimensional shape of the document placed on the document table 2 is detected. Specifically, the three-dimensional detection unit 145 controls the laser oscillator 76 so that the line laser is irradiated to the center of the document placed on the document table 2. The three-dimensional detection unit 145 further controls the camera 77 so that an image of the document is captured when the line laser is irradiated on the center of the document placed on the document table 2. Further, the three-dimensional detection unit 145 calculates a rough three-dimensional shape of the document by performing image processing on the image of the document captured by the camera 77.
  • the three-dimensional detection unit 145 controls the three-dimensional detection sensor 75 so that the detailed three-dimensional shape of the reading surface facing the reading unit 3 among the documents placed on the document table 2 is detected. Specifically, the three-dimensional detection unit 145 controls the laser oscillator 76 so that a plurality of line lasers corresponding to a plurality of laser planes are emitted to the reading surface of the document placed on the document table 2. The three-dimensional detection unit 145 is further configured to capture a plurality of images corresponding to the plurality of line lasers when the line laser is irradiated on the center of the document placed on the document table 2. To control.
  • One image corresponding to a line laser among a plurality of images indicates an image captured while the line laser is irradiated on the document, and a portion of the document irradiated with the line laser is illustrated. It is projected.
  • the three-dimensional detection unit 145 further calculates a detailed three-dimensional shape of the reading surface of the document by performing image processing on the image of the document captured by the camera 77.
  • the image processing unit 146 creates a right side read image by performing image processing on a plurality of right side read line images captured by the image reading unit 62 of the right side optical unit 51.
  • the image processing unit 146 creates a left-side read image by performing image processing on a plurality of left-side reading line images captured by the image reading unit 62 of the left-side optical unit 52.
  • the image processing unit 146 creates a composite image by performing image processing on the right side read image and the left side read image.
  • a composite image after distortion correction is created by performing image processing on the composite image based on the detailed three-dimensional shape detected by the three-dimensional detection unit 145.
  • FIG. 33 is a flowchart showing the operation of the image reading apparatus 1.
  • the device control unit 131 controls the carrier driving unit 45 to place the carrier 35 at the reading start position.
  • Ambient light of the environment where the image reading apparatus 1 is installed passes through the top plate 36 and illuminates the document table 2 because the carrier 35 is disposed at the reading start position.
  • the user can easily confirm what is placed on the top of the document table 2 by illuminating the document table 2 with ambient light, and easily what is placed on the top of the document table 2 Can be handled.
  • the user places a document to be read on the document table 2 using the image reading device 1 after the carrier 35 is placed at the reading start position. Specifically, the user attaches the V-shaped presser 95 to the presser carrier 83 and retracts the presser carrier 83 when the document to be read using the image reading device 1 is a binding document that cannot be flatly opened. Place in position. After the presser carrier 83 is placed at the retracted position, the user places the right placing table 15 at the V-shaped document right holding position and the left placing table 16 at the V-shaped document left holding position.
  • the user opens the document left and right so that a predetermined page of the document is exposed, places the right portion of the document on the right placement surface 17 of the right placement table 15, and places the left side of the document on the left side.
  • the portion is mounted on the left mounting surface 19 of the left mounting table 16.
  • the user moves the presser carrier 83 to the close contact position after placing the document on the right placement table 15 and the left placement table 16.
  • the V-shaped presser 95 when the presser carrier 83 is arranged at the close contact position, the right presser 97 comes into close contact with the reading surface facing the reading unit 3 in the right part of the document, and the left part of the document
  • the left presser 98 is in close contact with the reading surface facing the reading unit 3.
  • the user attaches the flat presser 84 to the presser carrier 83 and arranges the presser carrier 83 at the retracted position when the document to be read using the image reading device 1 can be spread flat.
  • the presser carrier 83 After the presser carrier 83 is placed at the retracted position, the user places the right placing table 15 at the flat document right holding position and the left placing table 16 at the flat document left holding position.
  • the user places the right portion of the document on the right placement surface 17 of the right placement table 15 and places the left portion of the document on the left placement surface 19 of the left placement table 16.
  • the user places the presser carrier 83 at the close contact position after placing the document on the right placing table 15 and the left placing table 16.
  • the flat presser 84 is in close contact with the reading surface of the original facing the reading unit 3 when the presser carrier 83 is disposed at the close contact position.
  • the apparatus control unit 131 controls the three-dimensional detection sensor 75 to perform three-dimensional detection (pre) (step S1).
  • the apparatus control unit 131 controls the laser oscillator 76 of the three-dimensional detection sensor 75 to irradiate the center of the document placed on the document table 2 with the line laser.
  • the device control unit 131 controls the camera 77 of the three-dimensional detection sensor 75 so as to capture an image of the document irradiated with the line laser.
  • the apparatus control unit 131 calculates a rough three-dimensional shape of the document placed on the document table 2 by performing image processing on the captured image.
  • the device control unit 131 executes a pre-reading check (step S2). That is, the apparatus control unit 131 determines whether the image of the document placed on the document table 2 can be read using the reading unit 3 based on the rough three-dimensional shape calculated in step S1. To do. When it is determined that the image of the document placed on the document table 2 cannot be read, the apparatus control unit 131 controls the display unit 136 to indicate that the image of the document cannot be read. The image is displayed on the display unit 136. When the error image is displayed on the display unit 136, the user presses the reading start switch 135 again after placing the document on the document table 2 again. When the reading start switch 135 is pressed, the apparatus control unit 131 executes the processes after step S1 again.
  • the apparatus controller 131 When it is determined that the apparatus controller 131 can read the image of the document placed on the document table 2, the right table 15 is arranged based on the rough three-dimensional shape calculated in step S1. The position where the left mounting table 16 is arranged is calculated. The device control unit 131 further controls the optical unit driving unit 53 to detect the position where the right optical unit 51 is disposed and detects the position where the left optical unit 52 is disposed. Next, the apparatus control unit 131 determines whether the right optical unit 51 and the left optical unit 52 are disposed at appropriate positions corresponding to the positions where the right mounting table 15 and the left mounting table 16 are disposed. (Step S3).
  • the apparatus control unit 131 determines that the right optical unit 51 is appropriate. It is determined that it is placed at the correct position.
  • the apparatus control unit 131 determines that the right optical unit 51 is appropriate. It determines with not being arrange
  • the apparatus control unit 131 appropriately selects the right optical unit 51.
  • the apparatus control unit 131 appropriately selects the right optical unit 51. It determines with not being arrange
  • the apparatus control unit 131 determines that the left optical unit 52 is in an appropriate position. It is determined that it is arranged in.
  • the apparatus control unit 131 determines that the left optical unit 52 is appropriate. It determines with not being arrange
  • the apparatus control unit 131 appropriately selects the left optical unit 52.
  • the apparatus control unit 131 determines that the left optical unit 52 is appropriate. It determines with not being arrange
  • the apparatus control unit 131 arranges the right optical unit 51 and the left optical unit 52 in appropriate positions when it is determined that both the right optical unit 51 and the left optical unit 52 are arranged in appropriate positions. It is determined that When it is determined that either the right optical unit 51 or the left optical unit 52 is not placed at an appropriate position, the device control unit 131 places the right optical unit 51 and the left optical unit 52 at appropriate positions. Judge that it is not.
  • the device control unit 131 controls the optical unit driving unit 53 to control the right optical unit 51 and the left optical unit 52.
  • the optical unit 51 and the left optical unit 52 are arranged at appropriate positions (step S4). That is, the apparatus control unit 131 controls the optical unit driving unit 53 to arrange the right optical unit 51 at the flat document right reading position when the right table 15 is arranged at the flat document right holding position. .
  • the apparatus control unit 131 controls the optical unit driving unit 53 to place the left optical unit 52 at the V-shaped original right reading position when the right placing table 15 is arranged at the V-character original right holding position. .
  • the apparatus control unit 131 controls the optical unit driving unit 53 to place the left optical unit 52 in the flat document left reading position when the left placing table 16 is placed in the flat document left holding position.
  • the apparatus control unit 131 controls the optical unit driving unit 53 to place the right optical unit 51 in the V-shaped document left side reading position when the left table 16 is disposed in the V-shaped document left side holding position. .
  • step S5 the apparatus control unit 131 controls the laser oscillator 76 of the three-dimensional detection sensor 75 to emit a line laser that travels along a plurality of laser planes toward the document table 2.
  • the apparatus control unit 131 controls the camera 77 of the three-dimensional detection sensor 75 while the line laser is emitted from the laser oscillator 76, thereby obtaining a plurality of three-dimensional detection images corresponding to a plurality of laser planes. Take an image.
  • Each of the plurality of three-dimensional detection images projects a document placed on the document table 2.
  • One 3D detection image corresponding to a certain laser plane among the plurality of 3D detection images is an image captured by the camera 77 when a line laser traveling along the laser plane is emitted. Show.
  • the apparatus control unit 131 calculates the detailed three-dimensional shape of the reading surface of the document placed on the document table 2 by performing image processing on the plurality of captured three-dimensional detection images.
  • the apparatus control unit 131 reads the original after the detailed three-dimensional shape of the reading surface is calculated (step S6). In other words, the apparatus control unit 131 adjusts the focus of the image reading unit 62 of the right optical unit 51 by controlling the focus adjustment unit 64 of the right optical unit 51. The apparatus control unit 131 adjusts the focus of the image reading unit 62 of the left optical unit 52 by controlling the focus adjustment unit 64 of the left optical unit 52. The apparatus control unit 131 controls the carrier driving unit 45 to move the carrier 35 from the reading start position to the reading end position at a predetermined speed. The apparatus control unit 131 moves the first illumination unit 65 and the second illumination unit 66 of the right optical unit 51 and the first illumination unit 65 and the second illumination unit 66 of the left optical unit 52 while the carrier 35 is moving. Are controlled so that the reading surface of the document placed on the document table 2 is illuminated.
  • the apparatus control unit 131 controls the image reading unit 62 of the right optical unit 51 while the carrier 35 is moving, thereby capturing a plurality of right reading line area images corresponding to a plurality of reading positions. To do. One right reading line area image corresponding to a certain reading position among the plurality of right reading line area images is picked up by the image reading unit 62 of the right optical unit 51 when the carrier 35 is arranged at the reading position. The image is shown. One right reading line area image projects one right reading line area corresponding to the reading position among the plurality of right reading line areas filled on the reading surface of the document.
  • the apparatus control unit 131 controls the image reading unit 62 of the left optical unit 52 while the carrier 35 is moving, thereby capturing a plurality of left reading line area images corresponding to a plurality of reading positions. To do. One left reading line area image corresponding to a certain reading position among the plurality of left reading line area images is picked up by the image reading unit 62 of the left optical unit 52 when the carrier 35 is arranged at the reading position. Is shown. One left reading line area image projects one left reading line area corresponding to the reading position among the plurality of left reading line areas filled on the reading surface of the document.
  • the apparatus control unit 131 captures the first illumination unit 65, the second illumination unit 66, and the left optical unit 52 of the right optical unit 51 after the plurality of right reading line region images and the plurality of left reading line region images are captured.
  • the first illumination unit 65 and the second illumination unit 66 are turned off.
  • the apparatus control unit 131 moves the carrier 35 to the reading start position by further controlling the carrier driving unit 45 after the plurality of right reading line region images and the plurality of left reading line region images are captured.
  • the apparatus control unit 131 performs image processing on the plurality of right side reading line area images and the plurality of left side reading line area images captured in step S ⁇ b> 6, thereby obtaining an image on the reading surface of the document placed on the document table 2.
  • Create (step S7) Specifically, the apparatus control unit 131 creates a right-side read image by performing image processing on a plurality of right-side read line area images captured by the image reading unit 62 of the right optical unit 51.
  • the right-side read image projects the reading surface of the document placed on the table on which the right optical unit 51 is directed. That is, the right-side read image indicates an image that projects the reading surface of the document placed on the right table 15 when the right optical unit 51 is disposed at the flat document right-side reading position.
  • the right-side read image indicates an image that projects the reading surface of the document placed on the left-side placing table 16 when the right optical unit 51 is disposed at the left-side reading position of the V-shaped document.
  • the apparatus control unit 131 creates a left-side read image by performing image processing on a plurality of left-side read line area images captured by the image reading unit 62 of the left-side optical unit 52.
  • the left-side read image projects the reading surface of the document placed on the table on which the left optical unit 52 is directed. That is, the left side read image projects the reading surface of the document placed on the left table 16 when the left optical unit 52 is disposed at the flat document left side reading position.
  • the left-side read image projects the reading surface of the document placed on the right table 15 when the left optical unit 52 is disposed at the V-document right side reading position.
  • the apparatus control unit 131 creates a composite image by performing image processing on the right side read image and the left side read image.
  • the composite image indicates an image that projects a composite reading surface in which the reading surface of the document placed on the right table 15 and the reading surface of the document placed on the left table 16 are joined together.
  • the apparatus control unit 131 creates a distortion-corrected composite image by performing image processing on the composite image based on the detailed three-dimensional shape calculated in step S5.
  • the composite image after distortion correction is in a state of being stretched flat so that the reading surface of the document placed on the right table 15 and the reading surface of the document placed on the left table 16 do not sag. An image showing the reading surface is shown.
  • the device control unit 131 controls the communication unit 134 to transmit the strain-corrected composite image to an external device that is separate from the device control unit 131.
  • FIG. 34 is a side view showing the optical unit 201 of the image reading apparatus of the comparative example.
  • the optical unit 201 includes an optical unit housing 61, an image reading unit 62, and a lens 63 in the same manner as the right optical unit 51 of the image reading apparatus 1 of the first embodiment described above.
  • a first illumination unit 65 and a second illumination unit 66 are provided.
  • the image reading unit 62 is disposed in the optical unit casing 61 so as to have an optical axis perpendicular to the reading surface of the document placed on the document table 2, and is fixed to the optical unit casing 61.
  • the carrier 35 needs to be disposed above the front end of the document table 2 when the image reading unit 62 captures an image of the front end of the document reading surface. .
  • the reading unit 3 needs to be arranged also in the upper part of the area on the near side of the document table 2.
  • the reading unit 3 is also arranged above the area on the near side of the document table 2 so that an object is handled in the space between the document table 2 and the reading unit 3. Therefore, the reading unit 3 may get in the way.
  • the image reading apparatus 1 since the reading unit 3 is not disposed on the upper side of the document table 2, the document table 2 and the reading unit 3 are compared with the image reading device of the comparative example. This makes it easier to handle objects in the space between them.
  • the reflected light that is regularly reflected from the reading surface of the document out of the light emitted from the first illumination unit 65 and the second illumination unit 66 may enter the image reading unit 62.
  • the scale may be reflected in the image captured by the image reading unit 62.
  • the image reading apparatus 1 according to the first embodiment is compared with the image reading apparatus according to the comparative example because the reading optical axis plane 67 is inclined with respect to the normal line of the reading surface of the document placed on the document table 2. Thus, it is possible to further reduce the appearance of the scale in the image captured by the image reading unit 62.
  • FIG. 35 is a graph showing CTF characteristics indicating changes in CTF (Contrast Transfer Function) with respect to changes in the reading angle 74.
  • the graph of FIG. 35 shows that in the image reading apparatus 1 of the first embodiment, the CTF decreases as the reading angle 74 increases regardless of whether the aperture F value of the image reading unit 62 is F11 or F6. This indicates that the resolving power decreases.
  • the graph of FIG. 35 shows that the resolving power is good when the reading angle 74 is smaller than 30 degrees.
  • FIG. 36 is a graph showing the relationship between the illumination irradiation angle and the image gradation value in black glossy paper.
  • the illumination irradiation angle indicates an angle formed by the first illumination optical axis plane 68 (second illumination optical axis plane 69) and the normal line of the reading plane.
  • the graph in FIG. 36 indicates that the image gradation value of the image captured by the image reading unit 62 increases as the illumination irradiation angle decreases in the right optical unit 51, and the extent of the image projected on the image increases. It shows that it will grow.
  • the graph of FIG. 36 indicates that the black glossy paper is less likely to be lit when the illumination irradiation angle is greater than 15 degrees. That is, the graph of FIG. 36 indicates that the image is hardly generated in the original image read by the image reading apparatus 1 of the first embodiment.
  • FIG. 37 is a graph showing the relationship between the illumination irradiation angle and the image gradation value in black fine paper.
  • the graph of FIG. 37 shows that the image gradation value of the image picked up by the image reading unit 62 increases as the illumination irradiation angle decreases in the right optical unit 51, and the extent of the image projected on the image is shown. It shows that it will grow.
  • the graph of FIG. 37 shows that when the illumination irradiation angle is larger than 15 degrees, it is difficult for the black high quality paper to be lit. That is, the graph of FIG. 37 shows that it is difficult for the image to be generated in the original image read by the image reading apparatus 1 of the first embodiment.
  • the image reading apparatus 1 includes a right mounting table 15 and an image reading unit 62 of the right optical unit 51.
  • the right placement table 15 has a right placement surface 17 on which a document is placed.
  • the image reading unit 62 of the right optical unit 51 can be translated in a direction parallel to the reading plane along which the reading surface of the document placed on the right table 15 is arranged so as to be arranged at each of a plurality of reading positions. It is supported.
  • the image reading unit 62 fills the reading surface with light that travels along the reading optical axis plane 67 when the image reading unit 62 is arranged at a reading position among a plurality of reading positions. An image of the right reading line area corresponding to the reading position in the right reading line area is taken.
  • the reading optical axis plane 67 is inclined with respect to the normal line of the reading plane.
  • the reading optical axis plane 67 is not perpendicular to the reading plane, so that when the plurality of right reading line areas are respectively imaged using the image reading unit 62, There is a region that does not need to be arranged in the image reading unit 62. For this reason, in the image reading apparatus 1, it is not necessary for the outer shell of the reading unit 3 that covers the area where the image reading unit 62 moves to cover the entire upper part of the right mounting table 15, and the reading unit 3 is the upper part of the right mounting table 15.
  • the reading unit 3 can be formed so as not to be disposed at a part of the reading unit 3. Since the image reading apparatus 1 is formed so that the reading unit 3 is not disposed on a part of the upper portion of the right mounting table 15, it is possible to secure a wide space for handling objects on the upper portion of the right mounting table 15.
  • the image reading apparatus 1 further includes a first illumination unit 65 and a second illumination unit 66 that are fixed to the image reading unit 62.
  • first illumination unit 65 and the second illumination unit 66 of the right optical unit 51 are arranged at a reading position where the image reading unit 62 of the right optical unit 51 is located, the reading of the plurality of right reading line regions is performed.
  • One right reading line area corresponding to the position is illuminated.
  • the first illumination unit 65 and the second illumination unit 66 are fixed to the image reading unit 62, so that the right reading line region imaged by the image reading unit 62 is the first illumination unit. 65 and the second illumination unit 66 appropriately illuminate.
  • the right reading line area can be appropriately imaged by the image reading unit 62 by appropriately illuminating the right reading line area.
  • first illumination unit 65 and the second illumination unit 66 of the image reading apparatus 1 travel along the reading optical axis plane 67 when the image reading unit 62 is disposed at a certain reading position. By emitting light, the right reading line area corresponding to the reading position is illuminated.
  • the reading surface is illuminated with light traveling along the reading optical axis plane 67, so that the light regularly reflected on the reading surface does not enter the image reading unit 62,
  • the reading unit 62 can appropriately capture an image of the document.
  • the reading angle 74 formed by the normal of the reading plane of the image reading apparatus 1 according to the first embodiment and the reading optical axis plane 67 is 15 degrees or more and 30 degrees or less.
  • Such an image reading apparatus 1 can prevent the light caused by the illumination light from the first illumination unit 65 and the second illumination unit 66 from appearing in the image, and can capture an image of the document with high resolution. can do.
  • the reading angle 74 of the image reading apparatus 1 according to the first embodiment is 20 degrees, but may be 15 degrees or less or 30 degrees or more when no problems such as resolving power and lighting occur. There may be.
  • the first illumination unit 65 and the second illumination unit 66 further illuminate the original by emitting light that travels along the reading optical axis plane 67.
  • the document may be illuminated with light that does not follow the reading optical axis plane 67.
  • the first illumination unit 65 and the second illumination unit 66 are further fixed to the image reading unit 62.
  • the unit 65 and the second illumination unit 66 may be supported by the outer shell of the reading unit 3. Even in such a case, the image reading apparatus 1 according to the first embodiment ensures a wide space for handling an object on the upper part of the document table 2 because the reading optical axis plane 67 is inclined with respect to the normal line of the reading plane. can do.
  • the image reading apparatus 1 further includes a reading unit holding unit 5 that supports the reading unit 3 with respect to the document table 2. At this time, the space where the right placement surface 17 is arranged and the space where the reading unit holding unit 5 is arranged can be separated by one plane 23.
  • the reading unit holding unit 5 is arranged on one side of the right mounting surface 17, so that the reading unit holding unit 5 is not arranged so as to surround the right mounting surface 17.
  • the image reading apparatus 1 can secure a wide space for handling a document because the reading unit holding unit 5 is not disposed so as to surround the right side mounting surface 17, and is large enough to protrude the right side mounting surface 17.
  • a document (for example, a scroll) can be placed on the right placement surface 17.
  • the image reading apparatus 1 further includes an apparatus control unit 131 and a carrier cable.
  • the apparatus control unit 131 is disposed inside the document table main body 14 of the document table 2 and performs image processing on an image captured by the image reading unit 62.
  • the carrier cable connects the image reading unit 62 and the device control unit 131 so that information can be transmitted.
  • the carrier cable includes a flexible cable portion 46 and a fixed cable portion. The flexible cable portion 46 is deformed when the image reading unit 62 moves. The fixed cable portion is arranged along the reading unit holding unit 5.
  • Such a carrier cable has a better appearance compared to other carrier cables arranged independently between the document table 2 and the reading unit 3, and further, when the carrier 35 is moved, the carrier cable is Problems that interfere with external objects can be prevented.
  • the image reading apparatus 1 further includes a left carrier cover 33 that covers the flexible cable portion 46.
  • a left carrier cover 33 that covers the flexible cable portion 46.
  • the flexible cable portion 46 of the image reading apparatus 1 according to the first embodiment is covered with the left carrier cover 33.
  • the image reading apparatus 1 according to the first embodiment is arranged so that the fixed cable portion of the carrier cable is along the reading unit holding unit 5.
  • the cable may not be along the reading unit holding unit 5.
  • the image reading apparatus 1 according to the first embodiment ensures a wide space for handling an object on the upper part of the document table 2 because the reading optical axis plane 67 is inclined with respect to the normal line of the reading plane. can do.
  • the image reading apparatus 1 further includes a flat presser 84.
  • the flat presser 84 is supported by the document table 2 so as to be able to translate in a presser moving direction 86 parallel to the reading optical axis plane 67 so that the flat presser 84 is disposed at the contact position or the retracted position.
  • the flat presser 84 comes into contact with the reading surface of the original by being disposed at the close contact position, and is separated from the reading surface by being disposed at the retracted position.
  • the image reading unit 62 captures an image of a document using light transmitted through the flat presser 84 regardless of whether the flat presser 84 is disposed at the close contact position or the retracted position.
  • the image reading unit 62 it is not necessary for the image reading unit 62 to pick up an image of a document using light transmitted through the flat presser 84 and to attach / detach the flat presser 84. Since the image reading apparatus 1 does not need to attach or detach the flat presser 84, the image of the document can be easily read regardless of whether the flat presser 84 is brought into contact with the reading surface of the document or not. Further, in the image reading apparatus 1, the image reading unit 62 captures an image of a document using light transmitted through the flat presser 84 regardless of whether the flat presser 84 is brought into contact with the reading surface of the document or not. As a result, the change in the brightness of the image can be reduced.
  • the image reading apparatus 1 further includes a weight 91, a wire 92, and a pulley 93.
  • the wire 92 is connected to a weight 91 and a flat presser 84 at both ends.
  • the pulley 93 guides the wire 92 so that the tension by which the weight 91 pulls the wire 92 due to gravity is converted to a force that moves the flat presser 84 from the contact position to the retracted position.
  • Such an image reading apparatus 1 can reduce the force for moving the flat presser 84 from the contact position to the retracted position, and can easily move the flat presser 84.
  • the image reading apparatus 1 further includes a weight cover 94 that covers an area in which the weight 91 moves.
  • the weight cover 94 is made of a material that transmits light.
  • ambient light of the environment in which the image reading apparatus 1 is installed passes through the weight cover 94 and illuminates the document table 2.
  • the user can easily confirm what is placed on the top of the document table 2 by illuminating the document table 2 with ambient light, and easily what is placed on the top of the document table 2 Can be handled.
  • the weight cover 94 is formed from a transparent material. However, when light that passes through the weight cover 94 is not used, the weight cover 94 is generated from an opaque material. Also good. Further, the image reading apparatus 1 according to the first embodiment includes the weight 91, the wire 92, and the pulley 93. However, when the flat presser 84 does not need to be easily moved, the weight 91, the wire 92, and the pulley are used. 93 may be omitted. Further, the image reading apparatus 1 according to the first embodiment includes the flat presser 84. However, the flat presser 84 may be omitted when it is not necessary to press the reading surface of the document with the flat presser 84. Even in such a case, the image reading apparatus 1 according to the first embodiment ensures a wide space for handling an object on the upper part of the document table 2 because the reading optical axis plane 67 is inclined with respect to the normal line of the reading plane. can do.
  • FIG. 38 is a perspective view illustrating the image reading apparatus according to the second embodiment.
  • the reading unit holding unit 5 of the image reading apparatus 1 according to the first embodiment described above is replaced with another reading unit holding unit 301.
  • the reading unit holding unit 301 is formed in a band shape and is hollow.
  • the reading unit holding unit 301 has one end fixed to a part of the back side of the document table main body 14 of the document table 2 and the other end fixed to a part of the reading unit 3.
  • the reading unit holding unit 301 holds the reading unit 3 so that the reading unit 3 is disposed substantially above the document table 2.
  • a fixed cable portion of a carrier cable that connects the device control unit 131 and the carrier 35 so as to transmit information is arranged inside the reading unit holding unit 301.
  • the image reading apparatus according to the second embodiment is similar to the image reading apparatus 1 according to the first embodiment described above, by forming the reading section 3 so that the reading section 3 is not disposed on the upper side of the document table 2. Thus, a wide space for handling objects at the top of the document table 2 can be secured.
  • the image reading apparatus according to the second embodiment is further provided with the reading unit holding unit 301 on the back side of the portion of the document table 2 on which the document is placed, so that the image reading apparatus according to the first embodiment described above. As in the case of 1, the space for handling the document can be secured widely.
  • the reading unit holding unit 301 Since the reading unit holding unit 301 supports the reading unit 3 alone, the reading unit holding unit 301 needs to have higher strength than the right holding unit 11 or the left holding unit 12 of the image reading apparatus 1 according to the first embodiment. Yes, for example, it needs to be made thicker.
  • the image reading apparatus 1 according to the first embodiment can make the strength of the right holding unit 11 and the strength of the left holding unit 12 smaller than the strength of the reading unit holding unit 301, compared to the image reading apparatus of the second example. Can be more easily produced.
  • the reading unit holding unit 5 is disposed on the far side of the area on the document table 2 where the document is placed.
  • the reading unit holding unit 5 may be replaced with another reading unit holding unit that surrounds.
  • FIG. 39 is a perspective view illustrating the image reading apparatus according to the third embodiment.
  • the reading unit holding unit 5 of the image reading apparatus 1 according to the first embodiment described above is replaced with another reading unit holding unit 311.
  • the reading unit holding unit 311 includes four members formed by a front side right side holding unit 312, a front side left side holding unit 313, a back side right side holding unit 314, and a back side left side holding unit 315.
  • the front side right holding part 312 is formed in a rod shape and is hollow. One end of the front right side holding unit 312 is fixed to a part on the right side on the front side of the document table main body 14 of the document table 2, and the other end is fixed to a part of the reading unit 3.
  • the front left side holding portion 313 is formed in a rod shape and is hollow.
  • the front left side holding unit 313 has one end fixed to a part of the left side on the front side of the document table main body 14 of the document table 2 and the other end fixed to a part of the reading unit 3.
  • the back side right holding part 314 is formed in a rod shape and is hollow.
  • the back side right holding part 314 has one end fixed to a part of the right side on the back side of the document table body part 14 of the document table 2 and the other end fixed to a part of the reading unit 3.
  • the back side left side holding part 315 is formed in a rod shape and is hollow.
  • the reading unit holding unit 311 holds the reading unit 3 on the document table 2.
  • the fixed cable portion of the carrier cable that connects the device control unit 131 and the carrier 35 so as to be able to transmit information includes a front side right side holding unit 312, a front side left side holding unit 313, a back side right side holding unit 314, and a back side left side holding. It is arranged inside any one of the parts 315.
  • the image reading apparatus according to the third embodiment is similar to the image reading apparatus 1 according to the first embodiment described above, by forming the reading section 3 so that the reading section 3 is not disposed on the upper side of the document table 2. Thus, a wide space for handling objects at the top of the document table 2 can be secured.
  • each of the four members is compared with the right holding unit 11 or the left holding unit 12 of the image reading apparatus 1 according to the first embodiment.
  • the strength of can be reduced, for example, it can be made thinner.
  • the image reading apparatus according to the third embodiment is manufactured more easily than the image reading apparatus according to the second embodiment by manufacturing the four members of the reading unit holding unit 311 so that the strength of each of the four members is reduced. be able to.
  • the image reading apparatus In the image reading apparatus according to the third exemplary embodiment, four members of the reading unit holding unit 311 are arranged so as to surround the document table 2, and the reading unit is held on one side of the portion of the document table 2 on which the document is placed. The four members of the part 311 are not arranged.
  • the image reading apparatus 1 according to the first embodiment reads when placing a document on the document table 2 as compared with the image reading apparatus according to the third embodiment because the reading unit holding unit 5 is disposed on the back side.
  • the document holder 5 is less likely to get in the way, and the document can be placed on the document table 2 more easily.
  • the image reading unit 62 of the right optical unit 51 and the image reading unit 62 of the left optical unit 52 are provided on the carrier 35.
  • One image reading unit 62 may be provided in the carrier 35.
  • the image reading unit 62 is fixed to the carrier casing 37 so that the reading optical axis plane 67 is not perpendicular to the normal of the placement surface on which the document of the document table 2 is placed. Yes.
  • the image reading apparatus does not arrange the reading unit 3 above the area on the near side of the document table 2, thereby handling an object in the space between the document table 2 and the reading unit 3. Can be made easier.
  • the embodiment has been described above, but the embodiment is not limited by the above-described content.
  • the above-described constituent elements include those that can be easily assumed by those skilled in the art, those that are substantially the same, and those in a so-called equivalent range.
  • the above-described components can be appropriately combined.
  • at least one of various omissions, substitutions, and changes of the components can be made without departing from the scope of the embodiments.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Image Input (AREA)
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Abstract

Ce dispositif de lecture d'image (1) comporte : un socle de montage droit (15) et une unité de lecture d'image (62) d'une unité optique droite (51). Le socle de montage droit (15) a une surface de montage droite (17) sur laquelle est monté un manuscrit. L'unité de lecture d'image (62) de l'unité optique droite (51) est supportée de façon à pouvoir être translatée dans une direction parallèle à un plan de lecture le long duquel une surface de lecture du manuscrit monté sur le socle de montage droit (15) est positionnée afin d'être disposée au niveau de chacune d'une pluralité de positions de lecture. Lorsque l'unité de lecture d'image (62) est disposée à une position de lecture parmi la pluralité de positions de lecture, l'unité de lecture d'image (62) capture, en utilisant la lumière se déplaçant le long d'un plan d'axe optique de lecture (67), une image d'une région de ligne de lecture droite qui correspond à la position de lecture parmi une pluralité de régions de ligne de lecture droites qui remplissent la surface de lecture. Le plan d'axe optique de lecture (67) est incliné par rapport à une ligne normale du plan de lecture.
PCT/JP2017/008790 2017-03-06 2017-03-06 Dispositif de lecture d'image WO2018163249A1 (fr)

Priority Applications (2)

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JP2019503840A JP6684389B2 (ja) 2017-03-06 2017-03-06 画像読取装置
PCT/JP2017/008790 WO2018163249A1 (fr) 2017-03-06 2017-03-06 Dispositif de lecture d'image

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PCT/JP2017/008790 WO2018163249A1 (fr) 2017-03-06 2017-03-06 Dispositif de lecture d'image

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WO2018163249A1 true WO2018163249A1 (fr) 2018-09-13

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09294182A (ja) * 1996-02-26 1997-11-11 Ricoh Co Ltd スキャナー装置
JP2013005034A (ja) * 2011-06-13 2013-01-07 Pfu Ltd 画像読取装置
WO2016199259A1 (fr) * 2015-06-10 2016-12-15 株式会社Pfu Dispositif de lecture d'image

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09294182A (ja) * 1996-02-26 1997-11-11 Ricoh Co Ltd スキャナー装置
JP2013005034A (ja) * 2011-06-13 2013-01-07 Pfu Ltd 画像読取装置
WO2016199259A1 (fr) * 2015-06-10 2016-12-15 株式会社Pfu Dispositif de lecture d'image

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