JP6248675B2 - Reading apparatus and image forming apparatus - Google Patents

Description

  The present invention relates to a reading apparatus and an image forming apparatus.

Conventionally, various reading devices capable of reading a document have been used. Among such reading devices, reading devices capable of reading a document in a plurality of areas are used.
For example, in Patent Document 1 and Patent Document 2, a reading device having a configuration in which a reading unit (reading unit) can move between a position facing a contact glass and a position facing a platen glass (between a plurality of regions). (Image forming apparatus) is disclosed.
Among these, the reading device disclosed in Patent Document 2 has a guide portion (moving auxiliary portion) that pushes (inclines) against the lower surface of the contact glass, and is configured so that the movement of the reading unit is smooth. Yes. In a configuration in which there is no movement assisting unit that pushes the reading unit against the lower surface as in the reading device disclosed in Patent Document 1, when the reading unit moves between a plurality of regions, the boundary between the regions This is because there is a case where the reading unit is caught at a boundary portion between each part or each region and a constituent member between each region. In the configuration in which there is a movement assist unit that pushes the reading unit against the lower surface, the reading unit is pushed down once when the reading unit moves between a plurality of regions. This is because the reading unit is restrained from being caught at the boundary between the regions and the constituent members.
Further, in the reading apparatus as described above, the user is required to be more compact than ever.

JP 2012-129649 A JP 2012-151570 A

However, since the reading device disclosed in Patent Document 1 does not have a movement assisting unit that pushes the reading unit like the reading device disclosed in Patent Document 2 against the lower surface, a gap between the plurality of regions is not provided. The movement failure of the moving reading unit could not be sufficiently suppressed.
Further, in order to reduce the size of the reading device disclosed in Patent Document 2, if the reading position when reading a document is arranged on the guide portion side at a position facing the contact glass, the reading portion and the inclined surface of the guide portion are separated. Touching and tilting the reading unit.
For this reason, in a conventional reading apparatus that can read an original in a plurality of areas, the reading apparatus cannot be made compact.

  Accordingly, an object of the present invention is to make the reading device compact in a reading device capable of reading a document in a plurality of areas.

  A reading apparatus according to a first aspect of the present invention for solving the above-described problems includes a plurality of transparent members, a reading unit that reads a document through the transparent members, and a first transparent member among the plurality of transparent members. A moving unit that moves the reading unit between a first region facing the second region and a second region facing the second transparent member of the plurality of transparent members, and movement of the reading unit between the regions A flat portion that forms at least a part of the path and is flush with a surface of the first transparent member that is provided on a side of the first transparent member that can face the reading portion; and the second transparent in the moving direction of the reading portion. A moving auxiliary part provided on the member side adjacent to the flat part and having an extruding part that pushes the reading part in a direction intersecting the surface when the reading part is moved, and the reading part Is said surface and front of said first region In the first reading position opposed to the both of the flat portion, characterized in that it is a capable of reading the document.

Here, “the first reading position that faces both the surface and the flat portion of the first region” means that a part of the reading portion faces the surface and the reading portion Means a position where a part other than the part faces the flat part.
According to this aspect, the movement assisting unit has the push-out unit provided adjacent to the flat part on the second transparent member side in the moving direction of the reading unit. Accordingly, since the movement of the reading unit becomes smooth, it is possible to suppress a movement failure of the reading unit when moving between the regions.
According to this aspect, the reading unit is capable of reading the document at a first reading position facing both the surface and the flat portion of the first region. For this reason, since the first transparent member and the second transparent member can be configured close to each other, the reading apparatus can be made compact. The flat portion enables the reading portion to be positioned at the first reading position without being inclined.

  A reading apparatus according to a second aspect of the present invention includes the automatic document feeder in the first aspect, and the reading unit can read the original fed from the automatic document feeder at the first reading position. It is characterized by being.

Here, the “automatic document feeder” is a device for automatically feeding a document to a reading position, and means a so-called “Auto Document Feeder (ADF)”.
According to this aspect, the reading unit can read the document sent from the automatic document feeder at the first reading position. Therefore, in the reading apparatus including the automatic document feeder, the reading apparatus can be made compact, the movement of the reading unit moving between the regions is suppressed, and the reading unit is not tilted. It is possible to position the first reading position.

  In the reading device according to a third aspect of the present invention, in the first or second aspect, the second transparent member can place the original, and the reading unit is placed on the second transparent member. The placed document can be read in the second area.

  According to this aspect, the second transparent member can place the original, and the reading unit can read the original placed on the second transparent member in the second area. For this reason, in the reading apparatus including the second transparent member on which the document can be placed, the reading apparatus can be made compact, the movement of the reading unit moving between the areas can be suppressed, and the reading can be performed. It is possible to position the first reading position without tilting the portion.

  In the reading device according to a fourth aspect of the present invention, in any one of the first to third aspects, the reading unit includes a reading line for reading the document along a direction intersecting the moving direction. The reading line when the reading unit is at the first reading position faces the surface.

  According to this aspect, the reading line when the reading unit is in the first reading position faces the surface. That is, the reading line only needs to be at a position facing the surface, and a portion of the reading unit other than the reading line can be configured at a position facing the flat portion. For this reason, since the first transparent member and the second transparent member can be configured close to each other, the reading apparatus can be effectively made compact.

  The reading device according to a fifth aspect of the present invention is characterized in that, in any one of the first to fourth aspects, the reading unit has a protrusion that can contact the first transparent member.

  According to this aspect, the reading unit has a protrusion that can contact the first transparent member. For this reason, it becomes possible to reduce the frictional force accompanying the contact between the reading unit and the first transparent member by the projection, and it is possible to effectively suppress the movement failure of the reading unit that moves between the regions.

  The reading device according to a sixth aspect of the present invention is the reading device according to the fifth aspect, wherein the reading unit is positioned before the protrusion when the reading unit moves from the second region side to the first region side. A protrusion that contacts the first transparent member and prevents the protrusion from contacting the second region side end of the first transparent member.

  According to this aspect, when the reading unit moves from the second region side to the first region side, the reading unit contacts the first transparent member before the projecting portion, and the projecting portion Has a protrusion that prevents contact with the second region side end of the first transparent member. For this reason, for example, when the reading unit moves from the second region side to the first region side, the protruding portion is provided at a position that does not contact the second region side end of the first transparent member. Thereby, it can comprise so that the said projection part may not contact the said 2nd area | region side edge part of a said 1st transparent member. In this way, it is possible to suppress the protrusion from being caught by the first transparent member, and to effectively suppress the movement failure of the reading unit that moves between the regions.

  The reading device according to a seventh aspect of the present invention is the reading device according to the fifth or sixth aspect, wherein the push-out portion moves the protrusion when the reading portion moves from the second region side to the first region side. The first region side end of the reading unit is in contact with the first transparent member earlier than the projection unit and the second region side end of the first transparent member is not in contact with the first transparent member. It is characterized by.

  According to this aspect, when the reading unit moves from the second region side to the first region side, the push-out unit has an end portion on the first region side of the reading unit prior to the protrusion. Is in contact with the first transparent member, and the protrusion is not in contact with the second region side end of the first transparent member. For this reason, for example, when the reading unit moves from the second region side to the first region side, the protruding portion does not come into contact with the second region side end portion of the first transparent member. By comprising in this way, it can comprise so that the said projection part may not contact the said 2nd area | region side edge part of a said 1st transparent member. In this way, it is possible to suppress the protrusion from being caught by the first transparent member, and to effectively suppress the movement failure of the reading unit that moves between the regions.

  The reading device according to an eighth aspect of the present invention is the reading device according to any one of the fifth to seventh aspects, wherein the reading unit is the protrusion from the second region side in the moving direction. It has a front projection part on the front side and a rear projection part on the rear side in the direction toward the one region side.

  According to this aspect, the reading unit has, as the protrusion, a front protrusion on the front side and a rear protrusion on the rear side in the direction from the second region side to the first region side in the moving direction. And have. Therefore, since the plurality of protrusions are provided in the movement direction, the protrusions can effectively reduce the frictional force associated with the contact between the reading unit and the first transparent member, and move between the regions. The movement failure of the reading unit can be more effectively suppressed.

  The reading device according to a ninth aspect of the present invention is the reading device according to the eighth aspect, wherein the distance between the rear projection and the end of the rear reading unit is the distance between the front projection and the front reading. It is characterized by being longer than the distance from the end of the part.

  According to this aspect, the distance between the rear protrusion and the end of the reading unit on the rear side is longer than the distance between the front protrusion and the end of the reading unit on the front side. In other words, since the rear protrusion is configured to be brought close to the front protrusion, the rear protrusion is the first transparent member immediately after the front protrusion comes into contact with the first transparent member. Makes it possible to contact with. For this reason, the movement defect of the reading unit that moves between the regions can be particularly effectively suppressed.

  The reading device according to a tenth aspect of the present invention is the reading device according to the eighth or ninth aspect, wherein the reading unit is more second than the rear protrusion when the reading unit is in the first reading position. At least a part of the region side is opposed to the extruded portion.

  According to this aspect, when the reading unit is at the first reading position, at least a part of the reading unit on the second region side is opposed to the pushing unit when the reading unit is in the first reading position. That is, for example, at least a part of the reading unit can be configured to face the extrusion unit so that the reading unit does not contact the extrusion unit. For this reason, the reading apparatus can be efficiently made compact.

  A reading device according to an eleventh aspect of the present invention includes a plurality of transparent members, a reading unit that reads a document via the transparent members, and a first region that faces the first transparent member among the plurality of transparent members. A moving unit that moves the reading unit between regions up to a second region facing the second transparent member among the plurality of transparent members, and at least a part of a moving path of the reading unit between the regions And an extruding unit that is provided on the second transparent member side in the moving direction of the reading unit and pushes the reading unit in a direction intersecting the surface when the reading unit is moved. An interpolation unit that fills a gap between an end of a surface provided on a side that can face the reading unit and the pushing unit, and prevents the reading unit from being caught on the end of the first transparent member. A movement auxiliary unit, and the reading unit is Serial in the surface and the first reading position opposed to the both of the interpolation portion of the first region, characterized in that it is a capable of reading the document.

According to this aspect, the movement assisting unit is provided on the second transparent member side in the moving direction of the reading unit, and pushes the reading unit in a direction intersecting the surface when the reading unit is moved. It has an extruding part. Accordingly, since the movement of the reading unit becomes smooth, it is possible to suppress a movement failure of the reading unit when moving between the regions.
Further, according to this aspect, the reading unit can read the document at a first reading position facing both the surface and the interpolation unit in the first region. For this reason, since the first transparent member and the second transparent member can be configured close to each other, the reading apparatus can be made compact. The interpolating unit can position the reading unit at the first reading position without tilting.

  An image forming apparatus according to a twelfth aspect of the present invention includes the reading apparatus according to any one of the first to eleventh aspects, and a recording apparatus capable of recording on a recording medium.

  According to this aspect, the image forming apparatus can be made compact, a movement failure of the reading unit that moves between the regions can be suppressed, and the reading unit can be positioned at the first reading position without being tilted. to enable.

1 is a schematic perspective view illustrating an image forming apparatus according to an embodiment of the present invention. 1 is a schematic side sectional view showing a reading device of an image forming apparatus according to an embodiment of the present invention. 1 is a schematic plan view illustrating a reading apparatus according to an embodiment of the present invention. FIG. 3 is a schematic plan view illustrating a document table (a document pressing cover is removed) of the reading apparatus according to the embodiment of the present invention. 1 is a schematic plan view illustrating an internal structure of a reading apparatus according to an embodiment of the present invention. FIG. 3 is a schematic bottom view showing the document table of the reading apparatus according to the embodiment of the present invention. 1 is a schematic side cross-sectional view illustrating a main part of a reading apparatus according to an embodiment of the present invention. 1 is a schematic side cross-sectional view illustrating a main part of a reading apparatus according to an embodiment of the present invention. FIG. 3 is an enlarged view showing a main part of a reading apparatus according to an embodiment of the present invention. FIG. 3 is an enlarged view showing a main part of a reading apparatus according to an embodiment of the present invention. 1 is a schematic perspective view illustrating a carriage of a CIS module of a reading apparatus according to an embodiment of the present invention. 1 is a schematic perspective view illustrating a main part of a reading apparatus according to an embodiment of the present invention. 1 is a schematic perspective view illustrating a main part of a reading apparatus according to an embodiment of the present invention. 1 is a schematic perspective view illustrating a main part of a reading apparatus according to an embodiment of the present invention. FIG. 3 is an enlarged view showing a main part of a reading apparatus according to an embodiment of the present invention. The enlarged view showing the principal part of the reader concerning a reference example.

  Hereinafter, an image forming apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The image forming apparatus according to the present exemplary embodiment is an image forming apparatus including the reading apparatus according to an exemplary embodiment of the present invention and a recording apparatus capable of recording on a recording medium. However, the reading device of the present invention is not limited to one configured with a recording device.

[Example] (FIGS. 1 to 15)
First, an outline of an image forming apparatus according to an embodiment of the present invention will be described.
FIG. 1 is a schematic perspective view of an image forming apparatus 1 according to the present embodiment.
The image forming apparatus 1 includes a recording device 2 that performs recording on a recording medium P and a reading device 3 provided on the recording device 2.

  The recording apparatus 2 is detachably provided with a cassette 4 that can store a plurality of recording media, and the recording media are fed one by one from the cassette 4. Then, the recording medium on which recording is performed by a recording unit (not shown) provided inside the recording apparatus 2 is discharged to the discharge tray 5.

  The reading device 3 is provided with a set tray 6 on which a plurality of documents can be set, and feeds the documents one by one from the set tray 6. Then, a first region R1 (see FIG. 4) facing the small glass 11 (see FIG. 4) as the first transparent member provided on the document table 9 by the reading unit 10 (see FIG. 2) provided inside the reading device 3. The document read in (2) is discharged to the discharge tray 7.

  Further, the reading device 3 is configured to be able to open the document pressing cover 8 with respect to the document table 9 in the direction A, and a large glass 12 as a second transparent member provided on the document table 9 (FIG. 4). The original can be set on the upper surface of (see). Then, the original can be read in the second region R2 (see FIG. 2) facing the large glass 12.

Next, the reading device 3 of this embodiment will be described in detail.
FIG. 2 is a schematic side sectional view of the reading device 3 of the present embodiment. FIG. 3 is a schematic plan view of the reading device 3 of the present embodiment. FIG. 4 is a schematic plan view showing the document table 9 (with the document pressing cover 8 removed) of the reading device 3 of the present embodiment. FIG. 5 is a schematic plan view showing the internal structure of the reading device 3 of this embodiment. FIG. 6 is a schematic bottom view showing the document table 9 of the reading device 3 of this embodiment.

  The arrows in FIG. 2 represent the transport path of the document set on the set tray 6. The document set on the set tray 6 is conveyed to the discharge tray 7 by driving the feeding unit 13 and the roller pairs 14, 15, 16, and 17 that are movable in the direction B. Also, as shown in FIG. 2, a small glass 11 is provided between the roller pair 15 and the roller pair 16 in the transport path, and the reading unit 10 is positioned at a first reading position described later. Thus, the document is read by the reading unit 10 at a position facing the small glass 11.

  A document table 9 shown in FIGS. 4 and 6 is provided below the document pressing cover 8 shown in FIGS. 1 and 3. The document table 9 is provided with the small glass 11 and the large glass 12 as described above. Further, the movement when the reading unit 10 moves in the direction C between the small area 11 and the large area 12 between the first area R1 and the second area R2 shown in FIG. A movement assist unit 18 is provided to assist.

  As shown in FIGS. 2 and 5, a reading unit 10 that is movable in the direction C is provided inside the reading device 3. As shown in FIG. 5, the reading unit 10 is shown in FIG. 11 and a contact image sensor (CIS) module 20 that forms a reading line for reading a document along a direction D that intersects the direction C. A carriage 19 is provided. As shown in FIGS. 5 and 11, the carriage 19 has a bearing 22 for the guide shaft 21 and is fixed to the belt 23. The carriage 19 moves in the direction C by receiving the driving force from the motor 25 via the pulley 24 and the belt 23. That is, the guide shaft 21, the belt 23, the pulley 24, the motor 25, and the like constitute the moving unit 26 of the reading unit 10.

Next, the movement state of the reading unit 10 between the regions from the first region R1 to the second region R2 will be described.
7 and 8 are schematic side cross-sectional views showing the main part of the reading device 3 of this embodiment. Also,
9 and 10 are enlarged views showing the main part of the reading device 3 of the present embodiment. FIG. 11 is a schematic perspective view showing the carriage 19 of the CIS module 20 of the reading device 3 of this embodiment.
Specifically, FIG. 7 shows a state in which the reading unit 10 is in a home position that is a position included in the second region R2. 8 and 9 show a state in which the reading unit 10 is in a first reading position that is a position included in the first region R1. FIG. 10 illustrates a state in which the reading unit 10 is moving from the home position to the first reading position.
The reading unit 10 reads at the first reading position when reading a document set on the set tray 6, but from the home position when reading a document set on the upper surface of the large glass 12. Reading is performed while moving in the direction C2 (see FIG. 7).

When the reading unit 10 moves from the home position illustrated in FIG. 7 to the first reading position illustrated in FIG. 8, the reading unit 10 moves beyond the movement assisting unit 18.
Here, as shown in FIG. 9 and FIG. 10, the movement assisting portion 18 includes a flat portion 32 that is flush with the lower surface 33 of the small glass 11 and a flat portion 32 on the large glass 12 side in the direction C. And an extruding unit 31 that pushes the reading unit 10 in a direction intersecting the lower surface 33 when the reading unit 10 is moved.
Here, the term “equal” means that there is no step in at least the region facing the lower surface 33 of the small glass 11 in the movement assisting portion 18. The flat surface 32 that continues from the region facing the lower surface 33 of the small glass 11 of the movement assisting portion 18 contacts the rear end portion of the protective portion 27 in the direction C1 in the first region R1, and the CIS module 20 does not tilt. It may have a gently inclined surface or a curved surface. Since this flat surface fills the space between the extrusion unit 31 and the small glass 11 as an interpolation unit, the CISM 20 can move without being caught by the end surface of the small glass 11.
As shown in FIG. 9, the first reading position is a position facing both the lower surface 33 and the flat portion 32 of the small glass 11 in the first region R1.

Further, as illustrated in FIG. 9, the reading unit 10 includes protrusions 29 and 30 that can contact the small glass 11 on the protection unit 27 of the CIS module 20. Note that the protrusions 29 and 30 can contact the large glass 12 as well, and provide the effect of keeping the reading unit 10 parallel to the small glass 11 in the first region R1 and also the large glass 12 in the second region R2. The effect of keeping the reading unit 10 parallel is provided.
Here, the protrusions 29 and 30 can come into contact with the small glass 11 and the large glass 12 because the carriage 19 is provided with a spring 34 as an urging member as shown in FIGS. This is because 34 applies the urging force with the CIS module 20 facing upward.

  Further, as shown in FIGS. 9 and 10, the reading unit 10 has a protruding portion 28 at the leading end portion in the direction C <b> 1 in the protection unit 27 of the CIS module 20. Here, as shown in FIG. 10, the protruding portion 28 is formed with the small glass 11 before the protruding portions 29 and 30 when the reading unit 10 moves from the second region R2 side to the first region R1 side. It is configured to contact.

Next, the contact part with the movement assistance part 18 in the reading part 10 is demonstrated.
12, 13, and 14 are schematic perspective views illustrating an end portion in the direction D of the reading unit 10 that is a main part of the reading device 3 of the present embodiment.
As described above, the reading unit 10 of this embodiment includes the protection unit 27. As shown in FIGS. 12, 13, and 14, a flat surface 35 that is in contact with the pushing portion 31 of the movement assisting portion 18 is located above the protection portion 27 and outside the reading portion 10 in the direction D. Is configured. Since the protection unit 27 is configured in this way, the reading unit 10 can move smoothly when moving between the first region R1 and the second region R2 via the movement assisting unit 18. .

To summarize the contents described so far, as described above, the reading device 3 of the present embodiment includes a small glass 11 and a large glass 12 as a plurality of transparent members, and a reading unit 10 that reads a document through the transparent members. It has.
In addition, a moving unit 26 that moves the reading unit 10 is provided between the first region R1 facing the small glass 11 and the second region R2 facing the large glass 12.
Further, at least a part of the movement path of the reading unit 10 between the regions, and a flat portion 32 configured to be flush with the lower surface 33 provided on the side of the small glass 11 that can face the reading unit 10; The movement assisting part 18, which is provided adjacent to the flat part 32 on the large glass 12 side in the direction C and has an extruding part 31 that pushes the reading part 10 in a direction intersecting the lower surface 33 when the reading part 10 is moved. It has.
In other words, an extruding unit 31 that is provided on the large glass 12 side in the direction C and pushes the reading unit 10 in a direction intersecting the lower surface 33 when the reading unit 10 is moved, and an end portion of the lower surface 33. The movement assisting section 18 includes a movement assisting section 18 having a flat section 32 as an interpolating section that fills the space between the extrusion section 31 and the reading section 10 to prevent the small glass 11 from being caught on the end.
The reading unit 10 has a first reading position that faces both the lower surface 33 and the flat portion 32 in the first region R <b> 1 (a portion of the reading unit 10 faces the lower surface 33, The document can be read at a position where a part other than the part of the flat part 32 faces the flat part 32).

As described above, the movement assisting unit 18 includes the pushing unit 31 provided adjacent to the flat portion 32 on the large glass 12 side in the direction C which is the moving direction of the reading unit 10. Accordingly, since the movement of the reading unit 10 becomes smooth, a movement failure of the reading unit 10 when moving between the regions is suppressed.
The reading unit 10 can read the document at the first reading position facing both the lower surface 33 and the flat portion 32 in the first region R1. For this reason, the small glass 11 and the large glass 12 are arranged close to each other to make the reading device 3 compact, and the flat portion 32 causes the reading unit 10 to be positioned at the first reading position without being inclined.

Further, as described above, the reading device 3 of the present embodiment includes the set tray 6 that can set a plurality of documents, and can feed the documents one by one from the set tray 6. That is, an automatic document feeder, a so-called “Auto Document Feeder (ADF)” is provided.
The reading unit 10 can read the document sent from the ADF at the first reading position.
For this reason, in the reading device 3 including the ADF, the reading device 3 is made compact, the movement failure of the reading unit 10 that moves between the regions is suppressed, and the reading unit 10 is moved to the first reading position without being tilted. It is located.

In addition, as described above, the large glass 12 of the document table 9 of the present embodiment can place the document, and the reading unit 10 reads the document placed on the large glass 12 in the second region R2. Is possible.
For this reason, in the reading device 3 including the large glass 12 on which the document can be placed, the reading device 3 is made compact, the movement failure of the reading unit 10 moving between the regions is suppressed, and the reading unit 10 is tilted. It is positioned at the first reading position without being lost.

As described above, the reading unit 10 according to the present exemplary embodiment includes the CIS module 20 that reads the original along the direction D that intersects the direction C.
The reading line of the CIS module 20 when the reading unit 10 is in the first reading position faces the lower surface 33. That is, the reading line is configured at a position facing the lower surface 33, and a portion of the reading unit 10 other than the reading line is configured at a position facing the flat portion 32.
For this reason, the small glass 11 and the large glass 12 are made close to each other to effectively make the reading device 3 compact.

Further, as described above, the reading unit 10 according to the present embodiment has the protrusions 29 and 30 that can come into contact with the small glass 11.
Therefore, the protrusions 29 and 30 reduce the frictional force associated with the contact between the reading unit 10 and the small glass 11, and effectively suppress the movement failure of the reading unit 10 that moves between the regions.

Further, as described above, the reading unit 10 according to the present embodiment contacts the small glass 11 before the protrusions 29 and 30 when the reading unit 10 moves from the second region R2 side to the first region R1 side. In addition, the protrusions 29 and 30 have a protrusion 28 that prevents the small glass 11 from coming into contact with the second region R2 side end.
Specifically, the protruding portion 28 of the present embodiment is provided at a position that does not come into contact with the second region R2 side end portion of the small glass 11 when the reading unit 10 moves from the second region R2 side to the first region R1 side. The projections 29 and 30 are configured not to contact the end of the small glass 11 on the second region R2 side. In this way, the protrusions 29 and 30 are prevented from being caught on the small glass 11, and the movement failure of the reading unit 10 that moves between the regions is effectively suppressed.
Further, as shown in FIG. 15 which is an enlarged view of a main part of the reading device 3 of the present embodiment, the protruding portion 28 of the present embodiment has a curved surface in contact with the small glass 11 when contacting the small glass 11. It has a shape. And the approach angle (theta) 1 with respect to the small glass 11 at the time of contacting the small glass 11 of the reading part 10 is comprised so that the protrusion parts 29 and 30 may not contact the edge part by the side of 2nd area | region R2 of the small glass 11. FIG.
With such a configuration, an impact when the reading unit 10 comes into contact with the small glass 11 is reduced, and a movement failure of the reading unit 10 that moves between the regions is effectively suppressed.
In addition, as shown in FIG. 16 which is an enlarged view of a main part of the reading device 3 of the reference example without the protruding portion 28, the reading device 3 without the protruding portion 28 is in contact with the small glass 11 of the reading portion 10. Depending on the approach angle Θ <b> 2 with respect to the small glass 11, the projections 29 and 30 may easily come into contact with the end of the small glass 11 on the side of the movement assisting portion 18.
However, the projecting portion 28 may be configured to be less likely to be caught on the small glass 11 than the projecting portion 29 by a configuration different from the present embodiment.

Further, when the reading unit 10 moves from the second region R2 side to the first region R1 side, the push-out unit 31 of the present embodiment is arranged on the first region R1 side of the reading unit 10 before the protrusions 29 and 30. The projecting portion 28 which is an end portion is configured to contact the small glass 11, and the projecting portions 29 and 30 are configured not to contact the second region R2 side end portion of the small glass 11.
In this way, the protrusions 29 and 30 are prevented from being caught on the small glass 11, and the movement failure of the reading unit 10 that moves between the regions is effectively suppressed.
In the present embodiment, the protruding portion 28 is provided at the end of the reading unit 10 on the first region R1 side, but the protruding portion 28 may be omitted.

Further, as shown in FIGS. 9 and 10, the reading unit 10 according to the present exemplary embodiment has a front-side protrusion 29 on the front side in the direction C1 from the second region R2 side to the first region R1 side in the direction C. And a rear projection 30 on the rear side.
As described above, since a plurality of protrusions are provided in the direction C, the protrusions 29 and 30 effectively reduce the frictional force associated with the contact between the reading unit 10 and the small glass 11, and the reading moves between the regions. The movement defect of the part 10 is effectively suppressed.

9, in the reading unit 10 of the present embodiment, the distance L2 between the rear projection 30 and the end of the rear reading unit 10 is equal to the front projection 29 and the front reading unit. It is comprised so that it may become longer than the distance L1 with 10 edge parts. That is, the rear protrusion 30 is configured to be brought close to the front protrusion 29 so that the rear protrusion 30 contacts the small glass 11 immediately after the front protrusion 29 contacts the small glass 11. It is configured.
For this reason, the movement defect of the reading unit 10 that moves between the regions is particularly effectively suppressed.

  Further, as shown in FIG. 9, the reading unit 10 of the present embodiment is such that when the reading unit 10 is in the first reading position, the protection unit 27 does not come into contact with the inclined surface portion 36 of the pushing unit 31. A part of the second region R2 side with respect to the rear protrusion 30 is configured to face the inclined surface portion 36 of the pushing portion 31. That is, at least a part of the reading unit 10 on the second region R2 side with respect to the rear projection 30 is configured to be opposed to the pushing unit 31. For this reason, the reader 3 is effectively made compact.

1 image forming device, 2 recording device, 3 reading device, 4 cassette, 5 discharge tray,
6 set tray, 7 discharge tray, 8 document holding cover, 9 document table,
10 reading unit, 11 small glass (first transparent member), 12 large glass (second transparent member),
13 Feeding units, 14 roller pairs, 15 roller pairs, 16 roller pairs,
17 Roller pair, 18 Movement assisting part, 19 Carriage,
20 CIS module (reading line), 21 guide shaft, 22 bearing,
23 belt, 24 pulley, 25 motor, 26 moving part, 27 protection part,
28 projections, 29 projections (front projections), 30 projections (rear projections),
31 Extrusion part, 32 Flat part, 33 Lower surface of small glass 11, 34 Spring,
35 flat surface, 36 slope,
L1 The distance between the front protrusion 29 and the end of the front reading unit 10,
L2 Distance between the rear protrusion 30 and the end of the reading unit 10 on the rear side, R1 first region,
R2 second region,
Θ1 An approach angle with respect to the small glass 11 when contacting the small glass 11 of the reading unit 10,
Θ2 Approach angle with respect to the small glass 11 when contacting the small glass 11 of the reading unit 10

Claims (12)

A plurality of transparent members;
A reading unit for reading a document through the transparent member;
A moving unit that moves the reading unit between a region from a first region facing the first transparent member to a second region facing the second transparent member;
Constituting a part of the moving path of the reading unit between the regions;
A flat portion configured to be flush with a surface provided on the side facing the reading unit in the first transparent member;
An extruding unit that is provided adjacent to the flat portion on the second transparent member side in the moving direction of the reading unit, and pushes the reading unit in a direction intersecting the surface when the reading unit is moved. A movement auxiliary part,
The reading unit reads the document at a first reading position facing both the surface and the flat part when reading the document in the first region. The reading device according to claim 1.
Equipped with an automatic document feeder,
The reading unit, wherein the reading unit reads the document sent from the automatic document feeder at the first reading position. The reader according to claim 1 or 2,
The second transparent member can place the original.
The reading device, wherein the reading unit reads the document placed on the second transparent member in the second area. The reading device according to any one of claims 1 to 3,
The reading unit has a reading line for reading the document along a direction intersecting the moving direction,
The reading apparatus, wherein the reading line when the reading unit is at the first reading position faces the surface. The reading device according to any one of claims 1 to 4,
The reading unit, wherein the reading unit includes a protrusion that contacts the first transparent member. The reading device according to claim 5, wherein
The reading unit contacts the first transparent member before the projection when the reading unit moves from the second region side to the first region side, and the projection unit is in contact with the first transparent member. A reading device having a protrusion that prevents contact with the end of the second region. The reading device according to claim 5 or 6,
When the reading unit moves from the second region side to the first region side, the pushing portion has an end portion on the first region side of the reading unit that is closer to the first transparent member than the protruding portion. The reading device is configured such that the protrusion is in contact with the second region side end of the first transparent member. The reading device according to any one of claims 5 to 7,
The reading unit includes, as the protrusion, a front protrusion on the front side and a rear protrusion on the rear side in the direction from the second region side to the first region side in the movement direction, A reading apparatus, wherein a front projection on the front side and a rear projection on the rear side are in contact with the first transparent member when in the first reading position. The reading device according to claim 8.
A reading apparatus, wherein a distance between the rear protrusion and an end of the reading unit on the rear side is longer than a distance between the front protrusion and an end of the reading unit on the front side. The reader according to claim 8 or 9,
The reading unit, wherein when the reading unit is in the first reading position, a part of the second region side is opposed to the push-out unit with respect to the rear protrusion. A plurality of transparent members;
A reading unit for reading a document through the transparent member;
A moving unit that moves the reading unit between a region from a first region facing the first transparent member to a second region facing the second transparent member;
Constituting a part of the moving path of the reading unit between the regions;
It is provided on the second transparent member side in the moving direction of the reading unit, and when the reading unit is moved , the reading unit intersects a surface provided on the side facing the reading unit in the first transparent member. An extrusion section that extrudes in a direction,
It fills between the extruding part and the end part of the surface, and a movement auxiliary unit having, an interpolation unit for the reading unit to prevent snagging to the ends of the first transparent member,
The reading unit, when reading the document in the first area, reads the document at a first reading position facing both the surface and the interpolation unit. A reading device according to any one of claims 1 to 11,
A recording device for recording on a recording medium;
An image forming apparatus comprising:

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