JP2015070479A - Image reading apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image reading apparatus capable of preventing a relatively thick medium such as a plastic card from being skewed.SOLUTION: A second reading part 36 is energized towards a first reading part 35 by a left end 63 and a right end 64 of a leaf spring 61. In a main scanning direction of the first reading part 35, a card slot 121 is shorter than a length of a reading range of the first reading part 35, and a center of the card slot 121 is positioned at a right side with respect to a reading center 65 that is a center of the first reading part 35. In the main scanning direction, an energization center 62 that is a center between a position of the left end 63 of the leaf spring 61 and a position of the right end 63 thereof is then positioned at a left side with respect to the reading center 65.

Description

  The present invention relates to an image reading apparatus.

  For example, Patent Document 1 discloses an image reading apparatus capable of reading an image of a sheet-like first medium and a second medium (such as a plastic card) that is narrower and thicker than the first medium.

  In this image reading apparatus, image reading units are provided above and below a conveyance path through which the first medium and the second medium are conveyed. The image reading unit extends in the main scanning direction orthogonal to the conveyance direction of the first medium and the second medium. When the first medium or the second medium conveyed on the conveyance path passes between the upper and lower image reading units, the image on the upper surface and / or the lower surface is read by the image reading unit.

JP 2013-75757 A

  Considering that the second medium thicker than the first medium passes between the upper and lower image reading units, the image reading unit is urged toward the conveyance path by the elastic member, and the image reading unit is configured to be vertically movable. ing. The urging position by the elastic member is set at both ends of the image reading unit in the longitudinal direction (main scanning direction). On the other hand, the second medium is conveyed at a position offset to one side in the longitudinal direction with respect to the center of the conveyance path. For this reason, when the second medium passes between the upper and lower image reading units, the image reading unit is inclined so that one side thereof is lifted. As a result, the second medium may be pressed by the image reading unit to one side in the longitudinal direction of the image reading unit and may be skewed with respect to the transport direction.

  An object of the present invention is to provide an image reading apparatus capable of suppressing the skew of a card.

  In order to achieve the above object, an image reading apparatus according to the present invention includes a pressing portion, a first reading portion that extends in the main scanning direction and reads an image, and the pressing portion at the first urging position. A first urging portion that urges toward the first reading portion; a second urging portion that urges the pressing portion toward the first reading portion at a second urging position different from the first urging position in the main scanning direction; A length in the main scanning direction is shorter than a length of the reading range of the first reading unit in the main scanning direction, and an insertion portion for inserting a card. The biasing center, which is located on one side with respect to the reading center that is the center of one reading unit and is the center of the first biasing position and the second biasing position in the main scanning direction, is more in the main scanning direction than the reading center. It is located on the other side.

  According to this configuration, the pressing unit is urged toward the first reading unit by the first urging unit and the second urging unit. In the main scanning direction of the first reading unit, the length of the insertion unit is shorter than the length of the reading range of the first reading unit, and the center of the insertion unit is one with respect to the reading center that is the center of the first reading unit. Located on the side. Therefore, when a card (a relatively narrow and thick medium such as a plastic card) is inserted from the insertion portion, the card is in the main scanning direction with respect to the reading center between the first reading portion and the pressing portion. Is transported on one side. In the main scanning direction, the urging center that is the center between the first urging position of the first urging unit and the second urging position of the second urging unit is located on the other side with respect to the reading center. ing. When the card is transported between the first reading unit and the pressing unit at a position on one side in the main scanning direction with respect to the reading center, the amount of displacement of the pressing unit increases toward one side. Since the biasing center is located on the other side with respect to the reading center, the biasing force is weaker than when the biasing center is located on the one side with respect to the reading center. As a result, the pressing force that the card receives from the pressing portion is weakened. Therefore, when the card passes between the first reading unit and the pressing unit, it can be suppressed that the card is pressed to one side in the main scanning direction by the pressing unit. As a result, the skew of the card can be suppressed.

  The pressing unit may be a second reading unit that reads an image.

  In this case, when the medium passes between the first reading unit and the second reading unit, the images on both sides of the medium can be read by the first reading unit and the second reading unit. Further, since the second reading unit also serves as the pressing unit, it is possible to suppress the skew of the card while reducing the number of parts of the reading device.

  The second urging unit is preferably located on one side of the reading center.

  According to this configuration, the first urging position of the first urging unit and the second urging position of the second urging unit are located separately on both sides in the main scanning direction with respect to the reading center. Therefore, when a medium such as A4 size or letter size cardboard (hereinafter referred to as “thick paper”) passes between the first reading unit and the pressing unit, the pressing force from the pressing unit is mainly applied to the cardboard. It is given with good balance in the scanning direction. As a result, it is possible to suppress the skew of the card while suppressing the skew of the cardboard.

  The distance between the biasing center and the reading center is preferably shorter than the distance between the reading center end of the insertion portion and the reading center.

  Thereby, the 1st energizing position of the 1st energizing part or the 2nd energizing position of the 2nd energizing part can be brought close to the position where the card inserted from an insertion part passes. As a result, when the card passes between the first reading unit and the pressing unit, the direction of the pressing force that the card receives from the pressing unit can be directed to the thickness direction of the card. Since the pressing portion comes into contact with the card in a state where one side in the main scanning direction is raised, the component of the pressing force in the main scanning direction is reduced when the pressing force is directed in the thickness direction of the medium. Therefore, the skew of the card can be further suppressed.

  It is preferable that the urging force of the first urging unit and the urging force of the second urging unit have the same magnitude.

  In this case, when the thick paper passes between the first reading unit and the pressing unit, the pressing force from the pressing unit can be applied to the thick paper in a more balanced manner in the main scanning direction. As a result, it is possible to satisfactorily suppress the skew of the cardboard. Furthermore, when the first urging unit and the second urging unit are assembled to the reading device, the first urging unit is assembled to the second urging position, or the second urging unit is assembled to the first urging position. This eliminates the need to consider errors that occur, thus reducing the time and effort of assembly.

  The first urging portion is preferably one end of the leaf spring, and the second urging portion is preferably the other end of the leaf spring.

  The leaf spring does not require a large arrangement space in the biasing direction. Therefore, by adopting a leaf spring, even if the space on the opposite side to the first reading portion side with respect to the pressing portion is small, the leaf spring can be easily arranged in that space.

  According to the present invention, skew of a relatively thick medium such as a plastic card can be suppressed.

1 is a perspective view of an image reading apparatus according to an embodiment of the present invention, and shows a state when the image reading apparatus is not used. FIG. 2 is a perspective view of the image reading device and shows a state when the image reading device is used. It is a rear view of an image reading apparatus. 1 is a schematic sectional view of an image reading apparatus. It is a perspective view which shows a left frame, a right frame, and a lower frame. It is a front view which shows a 1st reading part, a 2nd reading part, and a leaf | plate spring.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

<Overall configuration>

  As shown in FIGS. 1 and 2, the image reading apparatus 1 includes a housing 2 and a tray 3. The housing 2 includes a left frame 4, a right frame 5, an upper frame 6, a lower frame 7, an operation panel frame 8, and an operation unit 9.

  In the following description, the side on which the tray 3 located in the open position with respect to the housing 2 is located is the rear side, the upper frame 6 side with respect to the lower frame 7 is the upper side, and the vertical, horizontal, and front-back directions are Stipulate. And in each figure after FIG. 1, a direction is displayed with an arrow.

  The left frame 4 and the right frame 5 are arranged with an interval in the left-right direction. The upper frame 6 and the lower frame 7 are disposed between the left frame 4 and the right frame 5. As shown in FIG. 2, the upper frame 6 overlaps the lower frame 7 from above.

  The operation panel frame 8 overlaps the upper frame 6 from above. The operation unit 9 is located in the operation panel frame 8 at substantially the center in the lower front-rear direction and the left-right direction. The operation unit 9 includes an operation panel 10 with a touch panel. As shown in FIG. 2, the operation panel 10 is disposed so as to be exposed upward from an opening 11 provided in the operation panel frame 8.

  As shown in FIG. 2, the tray 3 includes a first tray 12, a second tray 13, and a third tray 14.

  One end of the first tray 12 in the direction orthogonal to the left-right direction is connected to one end of the second tray 13 in the direction orthogonal to the left-right direction so as to be rotatable about an axis extending in the left-right direction. On the other hand, the other end of the first tray 12 is supported at a substantially vertical center of the left frame 4 and the right frame 5 of the housing 2 so as to be rotatable around a tray shaft portion (not shown). The other end of the second tray 13 is connected to one end of the third tray 14 in a direction orthogonal to the left-right direction so as to be rotatable about an axis extending in the left-right direction.

  Accordingly, as shown in FIG. 1, the tray 3 has the first tray 12 overlapping the upper frame 6 from the rear side, the second tray 13 overlapping the operation panel frame 8 from the upper side, and the third tray 14 being the upper frame. 6, the upper frame 6 and the operation panel frame 8 are covered. Further, as shown in FIG. 2, the tray 3 extends from the rear upper end portion of the lower frame 7 to the rear upper side from the closed position that covers the upper frame 6 and the operation panel frame 8, and the second tray. 13 extends in parallel with the first tray 12, and the third tray 14 is configured to be displaceable to an open position extending upward from the second tray 13. In the state where the tray 3 is located at the open position, a sheet S made of A4 size and letter size thin paper or thick paper can be placed on the tray 3.

  In the second tray 13, an opening 15 having a size substantially the same as the outer shape of the operation panel 10 is formed at a position overlapping the operation panel 10 in the vertical direction when the tray 3 is located at the closed position. Thereby, the operation panel 10 can be visually recognized in both the state where the tray 3 is located at the open position and the state where the tray 3 is located at the closed position.

  As shown in FIG. 4, the upper frame 6 is disposed with an interval in the vertical direction with respect to the lower frame 7. An insertion port 17 formed between the rear end edge of the upper frame 6 and the rear end edge of the lower frame 7 is open to the rear upper side. Further, a discharge port 18 formed between the front end edge of the upper frame 6 and the front end edge of the lower frame 7 is open to the front side. Between the upper frame 6 and the lower frame 7, as shown in FIG. 4, there is a conveyance path 16 through which the sheet S is conveyed. The conveyance path 16 is formed by connecting the insertion port 17 and the discharge port 18. The sheet S is introduced into the conveyance path 16 from the insertion port 17 and is conveyed toward the discharge port 18 through the conveyance path 16.

  The image reading apparatus 1 includes a supply roller 31, a separation piece 32, a conveyance driving roller 33, a conveyance driven roller 34, a first reading unit 35, a second reading unit 36, a discharge driving roller 37 and a discharge driven roller 38.

  The supply roller 31 is disposed on the front side of the insertion port 17. The supply roller 31 is held by the lower frame 7 so as to be rotatable about a rotation axis extending in the left-right direction at the rear end portion of the lower frame 7. A part of the peripheral surface of the supply roller 31 protrudes forward from the upper surface of the lower frame 7.

  The separation piece 32 is made of rubber, for example. The separation piece 32 is attached to the upper frame 6. The separation piece 32 is in elastic contact with the peripheral surface of the supply roller 31 from the front upper side.

  The conveyance drive roller 33 is disposed on the front side of the supply roller 31. The transport driving roller 33 is held by the lower frame 7 so as to be rotatable around a rotation axis extending in the left-right direction. A part of the peripheral surface of the transport driving roller 33 protrudes upward from the upper surface of the lower frame 7.

  The transport driven roller 34 is disposed above the transport drive roller 33. The transport driven roller 34 is held by the upper frame 6 so as to be rotatable around a rotation axis extending in the left-right direction. The peripheral surface of the transport driven roller 34 protrudes downward from the lower surface of the upper frame 6 and is in contact with the peripheral surface of the transport drive roller 33.

  The first reading unit 35 is disposed on the front side of the transport driving roller 33. The first reading unit 35 is housed in a first housing portion 41 that is recessed from the upper surface of the lower frame 7 to the lower side. The first reading unit 35 has a longitudinal direction in the main scanning direction and extends in the left-right direction within the first storage unit 41. The first reading unit 35 is accommodated in the first accommodation unit 41 with its reading surface facing upward.

  The second reading unit 36 is disposed on the front side of the conveyance driven roller 34. The second reading unit 36 is housed in a second housing portion 42 that is recessed from the lower surface of the upper frame 6 to the upper side. The second reading unit 36 has a longitudinal direction in the main scanning direction, and extends in the left-right direction in the second storage unit 42. The second reading unit 36 is accommodated in the second accommodating unit 42 with its reading surface facing downward. The second reading unit 36 is configured to be displaceable in the vertical direction within the second storage unit 42.

  The discharge drive roller 37 is disposed on the front side of the first reading unit 35. The discharge driving roller 37 is held by the lower frame 7 so as to be rotatable around a rotation axis extending in the left-right direction at the front end portion of the lower frame 7. A part of the peripheral surface of the discharge drive roller 37 protrudes upward from the upper surface of the lower frame 7.

  The discharge driven roller 38 is disposed on the front side of the second reading unit 36. The discharge driven roller 38 is held by the upper frame 6 so as to be rotatable around a rotation axis extending in the left-right direction at the front end portion of the upper frame 6. The peripheral surface of the discharge driven roller 38 protrudes downward from the lower surface of the upper frame 6 and is in contact with the peripheral surface of the discharge drive roller 37.

<Card slot>

  The image reading apparatus 1 can read an image drawn on the card C. The card C is a medium that is relatively narrower and thicker than the sheet S placed on the tray 3. Examples of the card C include a business card, a cash card, a credit card, a membership card or a license.

  In order to read an image on the card C, the image reading apparatus 1 has a card insertion slot 121 as an example of an insertion slot as shown in FIGS. As shown in FIG. 4, the card insertion slot 121 is formed at the same height as the contact position between the transport driving roller 33 and the transport driven roller 34 at the right end of the rear surface of the lower frame 7. The card insertion slot 121 has a substantially rectangular shape extending in the left-right direction. The lateral width of the card insertion slot 121 is slightly larger than the short side length (53.98 mm) of the international standard ID-1 card size by the International Organization for Standardization (ISO) / International Electrotechnical Commission (IEC). It is smaller than the long side length (85.60 mm) of the card size. Further, the width of the card insertion slot 121 in the left-right direction is shorter than the length of the reading range in the left-right direction of the first reading unit 35.

<Scanning sheet image>

  When reading the image of the sheet S, the tray 3 is placed in the open position as shown in FIG. Then, the sheet S is placed on the tray 3.

  The sheet S placed on the tray 3 is inserted into the insertion port 17 until the leading end thereof contacts the supply roller 31 and the separation piece 32. At this time, the supply roller 31, the conveyance drive roller 33, and the discharge drive roller 37 are rotated counterclockwise as viewed from the right side. Further, the transport driven roller 34 and the discharge driven roller 38 are rotated clockwise as viewed from the right side, following the rotation of the transport drive roller 33 and the discharge drive roller 37, respectively.

  When the sheet S comes into contact with the peripheral surface of the supply roller 31, a conveying force is applied from the supply roller 31 to the sheet S, and the sheet S is drawn between the supply roller 31 and the separation piece 32. The sheets S are separated one by one by the function of the separation piece 32, and one sheet S passes between the supply roller 31 and the separation piece 32.

  When the sheet S comes into contact with the peripheral surfaces of the conveyance driving roller 33 and the conveyance driven roller 34, conveyance force is applied to the sheet S from the conveyance driving roller 33 and the conveyance driven roller 34. With this conveyance force, the sheet S is conveyed to the front side and passes between the conveyance driving roller 33 and the conveyance driven roller 34.

  Thereafter, the sheet S passes between the first reading unit 35 and the second reading unit 36. At this time, light is irradiated from the first reading unit 35 and the second reading unit 36 onto the sheet S on the reading surface of the first reading unit 35 and on the reading surface of the second reading unit 36, respectively. Then, the reflected light on the sheet S is received by the first reading unit 35 and the second reading unit 36, whereby the images on both sides of the sheet S are read.

  When the sheet S comes into contact with the peripheral surfaces of the discharge drive roller 37 and the discharge driven roller 38, a conveying force is applied to the sheet S from the discharge drive roller 37 and the discharge driven roller 38. With this conveying force, the sheet S is conveyed to the front side and discharged through the discharge port 18.

<Scanning card image>

  When reading the image of the card C, as shown in FIG. 4, the short side of the card C is parallel to the horizontal direction of the card insertion slot 121, and the other end in the longitudinal direction of the card C is the card. It is inserted into the insertion port 121 from the rear side. At this time, the transport drive roller 33 and the discharge drive roller 37 are rotated counterclockwise as viewed from the right side. Further, the transport driven roller 34 and the discharge driven roller 38 are rotated clockwise as viewed from the right side, following the rotation of the transport drive roller 33 and the discharge drive roller 37, respectively.

  Thereafter, when the card C is further inserted to the front side and the card C comes into contact with the peripheral surfaces of the transport driving roller 33 and the transport driven roller 34, a transport force is applied to the card C from the transport driving roller 33. With this transport force, the card C is transported to the front side and passes between the transport drive roller 33 and the transport driven roller 34.

  Thereafter, the card C passes between the first reading unit 35 and the second reading unit 36. At this time, light is irradiated from the first reading unit 35 and the second reading unit 36 onto the card C on the reading surface of the first reading unit 35 and on the reading surface of the second reading unit 36, respectively. Then, the reflected light from the card C is received by the first reading unit 35 and the second reading unit 36, whereby the images on both sides of the card C are read.

  When the card C comes into contact with the peripheral surfaces of the discharge drive roller 37 and the discharge driven roller 38, a conveying force is applied to the sheet S from the discharge drive roller 37 and the discharge driven roller 38. With this conveying force, the card C is conveyed to the front side and discharged through the discharge port 18.

<Leaf spring>

  A leaf spring 61 is provided between the upper surface of the second reading unit 36 and the lower surface of the second storage unit 42 (see FIG. 4).

  As shown in FIGS. 5 and 6, the leaf spring 61 extends in the left-right direction. The leaf spring 61 has a central portion 611, a left portion 612, and a right portion 613 integrally, and is formed symmetrically. The central portion 611 extends in the left-right direction in parallel with the upper surface of the second reading unit 36. The left part 612 extends from the central part 611 to the lower left. The right part 613 extends from the center part 611 to the lower right.

  The central part 611 is in contact with the lower surface of the second housing part 42. Further, the left end 63 of the left portion 612 and the right end 64 of the right portion 613 are in contact with the upper surface of the second reading unit 36. The leaf spring 61 is interposed between the upper surface of the second reading unit 36 and the lower surface of the second storage unit 42 in a state of being compressed in the vertical direction and elastically deformed. As a result, the left end 63 and the right end 64 of the leaf spring 61 press the second reading unit 36 downward with the same urging force, and urge the second reading unit 36, respectively. Is configured.

  Further, the leaf spring 61 is arranged at a position offset to the left side. Specifically, the leaf spring 61 has a center 62 in the left-right direction located on the left side of the center 65 in the left-right direction of the second reading unit 36, and the second biasing part 64 is on the right side of the center 65. It is arranged to be located. Since the leaf spring 61 is formed symmetrically, the center 62 of the leaf spring 61 is formed between the biasing position of the first biasing portion (left end) 63 and the biasing position of the second biasing portion (right end) 64. It coincides with the center of energization. Further, the center 65 of the second reading unit 36 coincides with the reading center that is the center in the left-right direction of the reading range by the second reading unit 36. Therefore, it can be said that the urging center 62 of the leaf spring 61 is located on the left side of the reading center 65 of the second reading unit 36. A distance L1 between the urging center 62 and the reading center 65 is shorter than a distance L2 between the right end portion 66 of the card insertion slot 121 and the reading center 65. The lower frame 7 includes a card insertion slot 121 in the main scanning direction of the first reading unit 35 and in a direction orthogonal to the urging directions of the first urging unit 63 and the second urging unit 64.

<Effect>

  As described above, the second reading unit 36 is biased toward the first reading unit 35 by the left end 63 and the right end 64 of the leaf spring 61. In the main scanning direction of the first reading unit 35, that is, in the left-right direction, the length of the card insertion slot 121 is shorter than the length of the reading range of the first reading unit 35. In other words, the housing 2 includes the main scanning direction of the first reading unit 35, the left end 63 of the leaf spring 61 that is an example of the first biasing portion, and the right end 64 of the leaf spring 61 that is an example of the second biasing portion. A card insertion slot 121 is provided in a direction orthogonal to both directions of the urging direction. The center of the card insertion slot 121 is located on the right side with respect to the reading center 65 that is the center of the first reading unit 35. Therefore, when the card C is inserted from the card insertion slot 121, the card C is conveyed at a position on the right side with respect to the reading center 65 between the first reading unit 35 and the second reading unit 36. The biasing center 62, which is the center between the position of the left end 63 and the position of the right end 64 of the leaf spring 61, is located on the left side with respect to the reading center 65. Thereby, when the card C passes between the first reading unit 35 and the second reading unit 36, it is possible to suppress the card C from being pressed to the right by the second reading unit 36. As a result, the skew of the card C can be suppressed.

  Since the image reading apparatus 1 includes the second reading unit 36, when the card C passes between the first reading unit 35 and the second reading unit 36, the first reading unit 35 and the second reading unit 36 are provided. Images on both sides of the card C can be read by the reading unit 36. Further, since the second reading unit 36 also serves as a pressing unit, the number of parts of the image reading apparatus 1 can be reduced.

  Since the second urging portion 64 is located on the right side of the reading center 65, the position of the left end 63 and the position of the right end 64 of the leaf spring 61 are separated on both sides in the left-right direction with respect to the reading center 65. To do. Therefore, when the sheet S is A4 size or letter size thick paper, when the sheet S passes between the first reading unit 35 and the second reading unit 36, the second reading unit 36 presses the sheet S. Pressure is applied in a balanced manner in the left-right direction. As a result, the skew of the sheet S can be suppressed.

  A distance L1 between the urging center 62 and the reading center 65 is shorter than a distance L2 between the right end 66 of the card insertion slot 121 and the reading center 65.

  Thereby, the position of the right end 64 of the leaf | plate spring 61 can be closely approached to the position where the card | curd C inserted from the card insertion port 121 passes. As a result, the direction of the pressing force received by the card C from the second reading unit 36 when the card C passes between the first reading unit 35 and the second reading unit 36 coincides with the thickness direction of the card C. Can be close to the vertical direction. Therefore, the skew of the card C can be further suppressed.

  The urging force of the first urging portion 63 of the leaf spring 61 and the urging force of the second urging portion 64 have the same magnitude.

  Therefore, when the card C passes between the first reading unit 35 and the second reading unit 36 because the urging center 62 is located on the left side of the reading center 65, the card C is in the second reading unit 36. Therefore, it is possible to effectively suppress the pressing to the right side. As a result, the skew of the card C can be suppressed satisfactorily. Further, when the sheet S is A4 size or letter size thick paper, the sheet S is pushed from the second reading unit 36 to the sheet S when passing between the first reading unit 35 and the second reading unit 36. The pressure can be applied in a more balanced manner in the left-right direction. As a result, the skew of the sheet S can be satisfactorily suppressed. Furthermore, when the leaf spring 61 is assembled to the image reading apparatus 1, it is not necessary to consider the relative positions thereof, so that it is possible to reduce the labor of the assembly.

<Modification>

  As mentioned above, although one Embodiment of this invention was described, this invention can also be implemented with another form.

  In the above-described embodiment, the configuration in which the first reading unit 35 and the second reading unit 36 are provided, and the second reading unit 36 is an example of the pressing unit of the present invention is taken up. However, the second reading unit 36 may be omitted, and in this case, the first urging unit 63 and the second urging unit 64 are directed toward the first reading unit 35 instead of the second reading unit 36. A pressing part such as a roller to be urged may be provided.

  In the above-described embodiment, the second reading unit 36 is provided so as to be displaceable in the vertical direction, and the second reading unit 36 is urged toward the first reading unit 35 by the leaf spring 61. It was. However, the present invention may be applied to a configuration in which the first reading unit 35 is provided so as to be displaceable in the vertical direction and the first reading unit 35 is biased toward the second reading unit 36 by a leaf spring. Is possible.

  Further, instead of the leaf spring 61, an elastic member other than the leaf spring 61 may be employed. For example, instead of the leaf spring 61, two coil springs may be used as the first biasing portion 63 and the second biasing portion 64.

  However, the leaf spring 61 does not require a large arrangement space in the biasing direction as compared with the coil spring. Therefore, by adopting the leaf spring 61, even if the space on the opposite side of the first reading portion 35 side with respect to the second reading portion 36 is small, the leaf spring 61 can be easily arranged in that space.

  In the above-described embodiment, the second reading unit 36 is urged at two points: the urging position of the first urging unit 63 and the urging position of the second urging unit 64. The second reading unit 36 may be energized.

  Further, the urging force of the first urging unit 63 and the urging force of the second urging unit 64 may be different.

  In addition, various design changes can be made to the above-described configuration within the scope of the matters described in the claims.

1 Image Reading Device 35 First Reading Unit 36 Second Reading Unit (Pressing Unit)
61 leaf spring 63 first biasing portion 64 second biasing portion 121 card insertion slot (insertion portion)

Claims (6)

A pressing part;
A first reading unit that extends in the main scanning direction and reads an image;
A first urging portion that urges the pressing portion toward the first reading portion at a first urging position;
A second urging unit that urges the pressing unit toward the first reading unit at a second urging position different from the first urging position in the main scanning direction;
An insertion portion for inserting a card, wherein a length in the main scanning direction is shorter than a length of a reading range of the first reading portion in the main scanning direction;
With
In the main scanning direction, the center of the insertion portion is located on one side with respect to the reading center that is the center of the first reading portion,
An image reading apparatus, wherein an urging center that is a center between the first urging position and the second urging position in the main scanning direction is located on the other side in the main scanning direction from the reading center.   The image reading apparatus according to claim 1, wherein the pressing unit is a second reading unit that reads an image.   The image reading apparatus according to claim 1, wherein the second urging unit is located on the one side with respect to the reading center.   The image reading apparatus according to claim 3, wherein a distance between the biasing center and the reading center is shorter than a distance between an end of the insertion portion on the reading center side and the reading center.   The image reading apparatus according to claim 1, wherein the urging force of the first urging unit and the urging force of the second urging unit have the same magnitude.   The image reading apparatus according to claim 1, wherein the first urging portion is one end of a leaf spring, and the second urging portion is the other end of the leaf spring.

Images