JP4941493B2 - Image reading device - Google Patents

Description

  The present invention relates to a configuration of an image reading apparatus having a reading unit capable of reading an image of a conveyed document at a reading position and capable of reading a fixed document image.

  In general, an image reading apparatus capable of reading not only a stationary original but also an image recording surface of a moving original to be conveyed is known. In such an image reading apparatus, when reading the image recording surface of a stationary document, a so-called flat bed (FB) scanner is used. When reading the image recording surface of a moving document, a so-called automatic document conveying device is used. (ADF: Auto Document Feeder) is used. The FB scanner includes a document pressing cover that can be opened and closed with respect to the apparatus main body, and a transparent glass plate (fixed reading unit) having a large area. Then, an image scanner (image reading means) such as a CIS (Contact Image Sensor) moves along the lower surface of the transparent glass plate while reading the image recording surface of a stationary document placed on the transparent glass plate. On the other hand, the ADF is provided on one side of the upper surface of the document pressing cover body, and conveys a plurality of documents deposited on the sheet feeding tray while separating them one by one. The document transported on the transported document transparent glass plate (transport reading unit) adjacent to the one end of the stationary document transparent glass plate is stationary under the transparent glass plate. After the image recording surface is read by the above, it is discharged to a paper discharge tray section (see Patent Documents 1, 2, and 3).

  In that case, as shown in Patent Document 2, a substantially U-turn-shaped document extending from the document feeding unit disposed on one side of the document pressing cover body to the sheet discharge unit through the document reading position of the transport reading unit. An ADF motor for driving a pickup roller, a separation roller, and a conveyance roller provided in a paper feed unit, a document conveyance path, and a paper discharge unit is disposed in an ADF having a conveyance path.

  On the other hand, as shown in Patent Documents 1, 3 and 4, in order to move an image scanner such as CIS along the lower surface of the transparent glass plate, a belt connected to the image scanner and wound around a pulley is rotated. The FB motor is disposed below the transparent glass plate within the case that supports the transparent glass plate.

JP 2004-133151 A (see FIGS. 1 and 5) JP 2008-184332 A (see FIGS. 1 to 12) JP 2008-187473 A (refer to FIGS. 1 to 3) Japanese Patent Laid-Open No. 60-30259 (see FIGS. 2 and 10)

  According to the configuration of Patent Document 2, the ADF motor is disposed on one side of the document presser cover so that the drive shaft is horizontal. On the other hand, according to the configurations of Patent Documents 1 and 3, the FB motor is disposed so that the drive shaft is vertical, and according to the configuration of Patent Document 4, the drive shaft is disposed horizontally.

  When the FB motor is arranged so that the drive shaft is horizontal in the case that supports the transparent glass plate, the height of the internal space of the case must be increased in proportion to the thickness of the FB motor itself. Don't be. Similarly, when the FB motor is arranged so that the drive shaft is vertical, the height of the internal space of the case must be increased in proportion to the diameter of the FB motor itself. In order to reduce the size of the drive motor, a special magnet material must be used, which is expensive and has problems of heat generation and noise, which is technically difficult. In particular, there are many problems when using a stepping motor.

  An object of the present invention is to solve such problems and to provide a document reading apparatus with an automatic document feeder having a low height without downsizing a drive motor or using an expensive material. Is.

In order to achieve the above object, in the document reading device according to the first aspect of the present invention, the document placed on a part of the first transmission member provided in the main body case is placed from above the document pressing cover body. A fixed reading unit that reads an image of the stationary document that is fixed by an automatic document conveying device that automatically conveys the document to be read in a predetermined conveyance direction, and reading by a second transmission member adjacent to the fixed reading unit. a feeding and reading unit for reading an image of a document is the conveyance at the position, an image reading apparatus provided with a scanning along the lower surface of the first transmissive member in the fixed reading unit, and in the conveying and reading unit a document reading means is stopped below the second transmitting member, a first drive source for reciprocating the document reading means to said scanning direction, provided to the main body casing surrounding the fixed reading unit and the conveying and reading unit It is, the first drive source, wherein the feeding and reading portion and the fixed reading unit sandwiching a side opposite to the side edges of the second transmission member as viewed from a direction perpendicular to the plane of the first transmission member positioned outward from, the upper end of the first drive source, the reverse transport path body in the outer and the document pressing cover member of the reverse conveying path of the document conveyed out of the automatic document feeder It is arrange | positioned so that it may be located in the clearance gap with the one side edge of the cover cover body to cover .

According to a second aspect of the present invention, in the document reading device according to the first aspect, the automatic document feeder and a second drive source for driving the automatic document feeder are disposed on the document pressing cover body. The second drive source is arranged so that the lower end side of the second drive source fits into a recess formed on the upper surface of the main body case.

According to a third aspect of the present invention, in the document reading device according to the second aspect, one side portion of the main body case and one side portion of the document pressing cover body are connected via a hinge means, and the document pressing unit is provided. The cover body is configured to be openable and closable with respect to the main body case, and the reverse conveyance path body of the document conveyed in the automatic document conveyance device intersects with the one side portion where the hinge means is disposed. It is arrange | positioned in the vicinity of a part and the said recessed part is arrange | positioned at the one side part by which the said hinge means in the said main body case is arrange | positioned .

According to a fourth aspect of the present invention, in the document reading apparatus according to any one of the first to third aspects, the first drive unit has a drive shaft positioned on a lower surface side of the first transmission member , and It is arrange | positioned so that it may extend in parallel with the said lower surface.

According to a fifth aspect of the present invention, in the document reading device according to the second or third aspect, the second driving unit has a driving shaft positioned on the upper surface side of the first transmitting member, and the upper surface of the second driving unit. It is arrange | positioned so that it may extend in parallel.

According to the first aspect of the present invention, the first driving source is on the opposite side of the fixed reading unit with the transport reading unit interposed therebetween, and is viewed from a direction orthogonal to the plane of the first transmission member. The reversing conveyance path in the automatic document conveying device is located outside the side edge of the second transmitting member and the upper end of the first driving means is located above one end of the main body case in the document reading device. since by upward projecting toward the clearance space between the end edge of the lid cover member in the body and the document pressing cover, the upward projecting by the height, from the position where the lower end of the first drive means is increased, The required height of the main body case can be reduced. As a result, the image reading apparatus with the automatic document feeder can be made low and compact. In particular, when a stepping motor is used as the first driving means, a general-purpose stepping motor is used without using a special magnet material, so that the image reading apparatus can be made compact even if a normal diameter motor is used. There is an effect that it can be formed.

According to a second aspect of the present invention, the automatic document feeder and a second drive source for driving the automatic document feeder are disposed on the document pressing cover body, and the second drive source is The lower end side of the main body case is disposed so as to fit into a recess .

  Therefore, the second driving means is arranged so that the lower end side thereof enters below the plane including the upper surface of the main body case, so that the height dimension from the lower surface of the main body case to the upper end of the automatic document feeder is set. Thus, the overall height of the image reading apparatus with the automatic document feeder can be formed compactly.

According to a third aspect of the present invention, one side portion of the main body case and one side portion of the document pressing cover body are connected via hinge means, and the document pressing cover body is connected to the main body case. is configured to be opened and closed Te, the reverse conveying path of the document conveyed in the automatic document feeder is disposed in the vicinity of the other side crossing the one side of said hinge means is arranged, the The recess is disposed on one side of the main body case where the hinge means is disposed .

  Therefore, when the upper end portion of the first driving means protrudes upward toward the gap space between the reverse conveyance path body located above one end portion of the main body case and the other side edge of the document pressing cover body, Since the lower end of the first driving means is raised by the upward projecting height, the required height of the main body case can be reduced. As a result, the image reading apparatus with an automatic document feeder can be made low and compact. In addition, by arranging the second driving means having a large weight on one side portion having the hinge means, even when the automatic document feeder is opened and rotated with respect to the main body case, the rotational moment generated by the second driving means. The automatic document feeder does not rotate in the direction to close carelessly.

According to invention of Claim 4 and 5, a 1st drive means is arrange | positioned so that the drive shaft may be located in the lower surface side of the said 1st permeation | transmission member , and may extend in parallel with the said lower surface, 2nd Since the drive means is arranged so that the drive shaft is located on the upper surface side of the first transmission member and extends in parallel with the upper surface, the diameter of the drive shaft of each motor is the center. Even when the dimensions are large, the image reading apparatus with the automatic document feeder can be lowered and formed compactly.

1 is a perspective view of a multi-function device including an automatic document feeder and an image reading device according to the present invention. It is the II-II sectional view taken on the line of FIG. (A) is a plan view of an automatic document feeder and an image reading device, and (B) is a plan view showing a main body case portion of the image reading device with the automatic document feeder omitted. FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. FIG. 2 shows a state in which the automatic document feeder and the image reading device are separated, in which (A) is a sectional view of only the automatic document feeder, and (B) is a sectional view of only a main body case portion of the image reading device.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  The embodiment of the present invention is applied to an image reading apparatus 2 in a multi-function apparatus 1 having a facsimile function, a scanner function, a copying function, and a printer function.

[Basic structure of multi-function device 1]
As shown in FIGS. 1 and 2, on the upper surface of the housing 4 of the multi-function device 1, a numeric keypad for performing a facsimile function, a scanner function, and a copying function and various operations are instructed on the front side thereof. A panel cover 5 is disposed to cover an operation panel unit including a button key, a liquid crystal panel for displaying command contents, error display, and the like.

  As shown in FIG. 1, an opening 4a is opened on the front side (front side in FIG. 1) of the housing 4 in the multi-function device 1, and a sheet as a sheet (hereinafter referred to as a sheet) is formed in the opening 4a. The sheet feeding cassette 7 having an open top surface is stored so as to be insertable / removable along the X-axis direction. A paper discharge tray 7 a is mounted on the upper surface of the paper feed cassette 7. Then, the paper fed from the paper feed cassette 7 is sent to an ink jet type image recording unit provided in the housing 4 to record an image, and then the paper is discharged to a paper discharge tray 7a.

  Arranged behind the panel cover 5 are an image reading device 2 for executing a scanner function and an automatic document feeder 3 mounted thereon. As shown in FIG. 2, FIG. 3A and FIG. 3B, on the main body case 2a in the image reading apparatus 2, the first transmission is used as a transparent plate member for placing a stationary document and a transported document. A member 6 is arranged. Below the first transmission member 6, line-type reading means 8 (for example, a contact image sensor (CIS)) for reading the image recording surface of the document is provided. The linear reading means 8 mounted on a linear guide member (not shown) extending along the Y-axis direction in FIGS. 1 and 3B and reciprocally movable is linear in the X-axis direction in FIG. Long.

  The main body case 2a in the image reading apparatus 2 is vertically moved around a pivot (not shown) horizontally provided on the housing 4 at one end (in the embodiment, one side rearward from the panel cover 5). It is mounted so that it can rotate.

  An automatic document feeder 3 (ADF (Auto Document Feeder)) that conveys a document to the image reading device 2 is formed on an upper cover body 10 that covers substantially the entire upper portion of the main body case 2 a and an upper surface of the upper cover body 10. And a paper discharge tray section 14 disposed above the paper feed tray section 13 and having a shorter length in the Y-axis direction than the paper feed tray section 13. A pressing plate (not shown) is attached to the lower surface of the upper cover body 10, and presses a stationary document placed with the image recording surface abutting on the first transmission member 6 with this pressing plate. is there.

  The upper cover body 10 made of synthetic resin (the document pressing cover body described in the claims) has a pair of hinge means 11a and 11b (see FIGS. 3A and 3B) at its rear end (opposite the panel cover 5). ) To the main body case 2a so as to be movable in the vertical direction and to be capable of opening / closing and turning. The reason why the pair of hinge means 11a and 11b is configured to be movable in the vertical direction is that a thick original such as a book placed on the first transmission member 6 is placed on the first transmission member 6 by the upper cover body 10. This is to enable pressing in a substantially parallel state with respect to the surface.

  As shown in FIGS. 2, 3 (A) and 3 (B), the left end portion of the first transmission member 6 is sandwiched between the scooping guide body 12 bonded to the upper surface of the first transmission member 6. Is formed so as to be a second transmitting member 6a as a transported document reading portion. That is, in the embodiment, the first transmission member 6 and the second transmission member 6a are integrally formed. However, the first transmission member 6 and the second transmission member 6a may be formed separately with the scooping guide body 12 interposed therebetween. Further, the scooping guide body 12 has a rectangular shape that is long in the X-axis direction, and is almost the same as the length of the first transmission member 6 in the short direction.

  As will be described later, the document is in sliding contact with the upper surface of the second transmission member 6a with the image recording surface of the document conveyed in the first conveyance direction (arrow A direction) facing down, and is stationary on the lower surface of the second transmission member 6a. The reading unit 8 reads the image of the document. Above the detection position of the reading means 8 is the reading position Re of the conveyed document (see FIG. 2).

  The area on the right side of the guide member 12 bonded to the upper surface of the first transmission member 6 is a reading area for a stationary document. The reading unit 8 serves as both a first reading unit for a fixed reading unit (a reading area of a stationary document) and a second reading unit for a conveyance reading unit. As will be described later, an FB motor 30 for moving the reading unit 8 along the lower surface of the first transmission member 6 and an ADF motor 31 for supplying power to the drive unit in the automatic document feeder 3 are provided. .

  The automatic document feeder 3 includes a first transport direction (in the direction of arrow A) for transporting a document to a reading position Re located on one side (one end in the Y direction) of the paper feed tray unit 13 and the reading position Re. A reversal conveyance path body 20 having a substantially U-turn shape including a second conveyance direction (arrow B direction) for conveying a document to the discharge tray unit 14 is provided (see FIG. 2).

  A pair of document guides 13 a is provided in the paper feed tray unit 13 on the upper surface side of the upper cover body 10. Then, when one document guide 13a is manually moved by a known interlocking mechanism, the other document guide 13a is simultaneously moved in the X direction so that the width can be adjusted according to the width dimension of the document in the X direction. Has been. A paper discharge tray section 14 is integrally provided on the upper surfaces of the pair of document guides 13a.

  The automatic document feeder 3 sucks a plurality of documents placed in a stacked state on the paper feed tray section 13 and separates one document from the suction section to separate the first document in the first transport direction (reading position Re). And a reversing conveyance path body 20 for reversing the conveyed document from the reading position Re to the second conveying direction and conveying it to the paper discharge tray unit 14. ing. As shown in FIG. 2, these components are arranged below a lid cover body 19 that covers the upper side of the left end portion of the automatic document feeder 3.

  The suction part is provided with a suction roller 15 and a suction nip piece 17, and a separation roller 16 and a separation pad 18 as a separation part are arranged on the downstream side of the conveyance. A feeding roller portion including a first driving roller 21 and a first pinch roller 22 is disposed downstream of the separation portion and upstream of the reading position Re (guide body 12). A pair of a second drive roller 23 and a second pinch roller 24 is disposed at the lower end of the reverse conveyance path body 20 on the downstream side from the reading position Re. Further, a discharge roller portion including the first drive roller 21 and the third pinch roller 25 is disposed downstream of the upper end of the reverse conveyance path body 20. The rotational driving force from one ADF motor 31 is transmitted to the suction roller 15, the separation roller 16, the first driving roller 21 and the second driving roller 23 through a gear mechanism (not shown).

  The ADF motor 31 is disposed in one side portion 10a surrounded by the upper cover body 10 and the lid cover body 19 in the automatic document feeder 3 (FIGS. 1, 3A, 3B, and 3A). (See FIG. 4). In that case, by arranging the heavy ADF motor 31 on the side having the hinge means 11a and 11b, the rotational moment by the ADF motor 31 is also obtained when the automatic document feeder 3 is opened and rotated with respect to the main body case 2a. The automatic document feeder 3 does not rotate in the direction to close carelessly. Further, in a state where the automatic document feeder 3 is closed so that the upper cover body 10 is parallel to the first transmission member 6, the drive shaft 31 a of the ADF motor 31 is parallel to the upper surface of the first transmission member 6. (Refer to FIG. 4). The ADF motor 31 is disposed so that the lower end side thereof enters below the plane including the upper surface of the main body case 2a, so that the ADF motor 31 extends from the lower surface of the main body case 2a to the lid cover body 19 of the automatic document feeder 3. The height dimension can be shortened, and the overall height of the image reading apparatus 2 with the automatic document feeder 3 can be compactly formed. Furthermore, in this case, as shown in FIG. 4, the lower end side of the ADF motor 31 is surrounded by the bottom plate of the upper cover body 10, and the downward projecting portion 10a connects the automatic document feeder 3 to the main body case 2a. When the upper cover body 10 is opened on the main body case 2a, the ADF motor is configured so as to be fitted in the recess 32 formed in the upper surface of the main body case 2a. The lower end side of 31 is not exposed.

  The suction nip piece 17 and the separation pad 18 can be elastically contacted with the suction roller 15 and the separation roller 16, respectively. The suction nip piece 17 covers the upper part of the separation pad 18, passes through the middle part of the first drive roller 21, and extends so as to approach the upstream side of the document presser 27 on the upper side of the reading position Re. The lower surface side becomes a part of the feeding path, and the upper surface side becomes a part of the discharge path.

  Next, when the original in the second conveyance direction, that is, the document after reading is U-turned and discharged to the guide plate 28 as the discharge chute and the discharge tray 14 on the upper side of the reverse conveyance path body 20, each original The configuration for ensuring that the image recording surface of the first document is upward and the next document is reliably discharged below the previously discharged document (the order of stacking the discharged documents in the normal order) is described. To do.

  In one embodiment, the height position of the portion where the original from the downstream end of the reverse conveying path 20 is nipped and discharged by the upper end of the first drive roller 21 and the third pinch roller 25 is It is set to be at a position lower than the conveyance downstream end (see FIG. 2).

  With this configuration, the originals accumulated in the paper feed tray unit 13 and having the image recording surface facing downward are separated and conveyed between the separation roller 16 and the separation pad 18 in order from the first sheet on the bottom layer. . After passing through the nip portion between the first drive roller 21 and the first pinch roller 22, the second transmission member 6 a is conveyed by the document presser 27 while the image recording surface is in sliding contact with the surface of the second transmission member 6 a. After the image of the original is read by the reading means 8 stationary at the position below the reading position Re of the second transmitting member 6a, the original passes through the second drive roller 23, the second pinch roller 24, and the reverse conveying path body 20. Then, the sheet is discharged toward the guide plate 28 from the nip portion formed by the upper end of the first drive roller 21 and the third pinch roller 25. In that case, since the height position of the conveyance downstream end portion of the guide plate 28 is higher than the height position of the portion nipped between the upper end of the first drive roller 21 and the third pinch roller 25 and discharged, precedently. Since the leading edge of the succeeding document approaches the lower surface side of the document that has been discharged and deposited on the guide plate 28 and is drawn onto the guide plate 28, the stacking sequence of the documents that are subsequently discharged onto the sheet discharge tray unit 14. Is the same as the state of being placed on the paper feed tray unit 13, and it is not necessary for the operator to change the document stacking order later.

[Configuration of still image reading unit]
The reading means 8 that reciprocates in the Y axis direction along the lower surface of the first transmission member 6 is fixed to a carriage 33 that extends in the X axis direction (see FIGS. 2 and 3B). Then, both end portions of the carriage 33 can slide on guide members (not shown) extending in the Y-axis direction on the lower surface of the portion supporting the side end portions of the first transmission member 6 and the second transmission member 6a in the main body case 2a. It is supported by. A belt 34 such as a timing belt connected to the carriage 33 is wound around a driving pulley 35 and a driven pulley 36 disposed at both ends in the Y-axis direction in the main body case 2a (FIGS. 2 and 3). (See (B)).

  The FB motor 30 for transmitting power to the drive pulley 35 is disposed on the other side portion crossing the one side portion having the hinge means 11a and 11b in the main body case 2a. Further, the FB motor 30 has an upper end side outside the outer diameter side of the reverse conveyance path body 20 at the other side portion, and a lower end side and a lid cover body 19 (even part of the document pressing cover body 10). It arrange | positions so that it may be located in the clearance gap space 40 between the other side edges 19a (refer FIG. 2, FIG. 3 (A), FIG. 3 (B), and FIG. 4). In that case, the drive shaft 30 a of the FB motor 30 extends in parallel with the lower surface of the first transmission member 6. Further, a gear transmission mechanism 37 composed of a worm gear or the like is disposed between the drive shaft 30 a of the FB motor 30 and the drive pulley 35. In addition, the clearance space 40 between the said reverse conveyance path body 20 and the one end edge 19a of the lid cover body 19 located above the one end part of the main body case 2a in the Y-axis direction is originally a dead space. In order to effectively use the gap space 40, the upper end portion of the FB motor 30 protrudes upward toward the gap space 40. Since the cover portion 41 is formed to bulge on the upper surface of the main body case 2a so as to cover the upward projecting portion (see FIG. 2), the FB motor 30 even when the document pressing cover body 10 is opened upward. Is not exposed.

  When the upper end portion of the FB motor 30 protrudes upward toward the gap space 40 between the reverse conveying path body 20 positioned above one end portion of the main body case 2a and the one end edge 19a of the lid cover body 19, the upward direction is increased. Since the lower end of the FB motor 30 is raised by the protruding height, the required height of the main body case 2a can be reduced. As a result, the height of the image reading device 2 with the automatic document feeder 3 can be reduced and compactly formed. In particular, when a stepping motor is used as the FB motor 30, a special stepping motor is used without using a special magnet material, so that even if a normal diameter motor is used, the automatic document feeder 3 is attached. There is an effect that the image reading apparatus 2 can be formed compactly.

  The motors 30, 31 are arranged so that the drive shaft 30 a of the FB motor 30 is parallel to the lower surface of the first transmission member 6 and the drive shaft 31 a of the ADF motor 30 is parallel to the upper surface of the first transmission member 6. In other words, the automatic document feeder 3 and the automatic document feeder 3 can be arranged even when a motor having a diameter dimension larger than the axial dimension of the motor is used. There is an effect that the height dimension of the image reading apparatus 2 can be formed compactly.

  The document reading sensor 8 described above corresponds to an example of the document reading means described in the claims, the upper cover body 10 corresponds to an example of the document pressing cover body described in the claims, and the FB motor 30 is the same as the first document reading unit. The ADF motor 31 corresponds to the driving means, and the ADF motor 31 corresponds to the second driving means.

DESCRIPTION OF SYMBOLS 1 Multifunctional device 2 Image reading apparatus 2a Main body case 3 Automatic document conveying apparatus 4 Housing 6 First transmission member 6a Second transmission member 8 Document reading sensor 10 as document reading means Upper cover body 19 as document pressing cover body Lid cover Body 20 Reverse conveyance path body 30 FB motor 30a as first drive means Drive shaft 31 ADF motor 31a as second drive means Drive shaft 32 Recess 33 Carriage 40 Clearance space 41 Cover portion

Claims (5)

A fixed reading unit that reads an image of the stationary document by fixing a document placed on a part of the first transmission member provided in the main body case by a document pressing cover from above ;
An automatic document conveyance device that automatically conveys a document to be read in a predetermined conveyance direction; and a conveyance reading unit that reads an image of the conveyed document at a reading position on a second transmission member adjacent to the fixed reading unit. An image reading apparatus comprising:
A document reading unit that scans along the lower surface of the first transmission member in the fixed reading unit and stops below the second transmission member in the conveyance reading unit, and a second unit that reciprocates the document reading unit in the scanning direction. 1 drive source is provided in the main body case surrounding the fixed reading unit and the conveyance reading unit ,
The first drive source is on the opposite side of the fixed reading unit across the transport reading unit, and is more than the side edge of the second transmitting member when viewed from a direction orthogonal to the plane of the first transmitting member. The upper end side of the first drive source located outside is a lid that covers the reverse conveying path of the original to be conveyed and the reverse conveying path of the original pressing cover in the automatic document feeder. An image reading apparatus, wherein the image reading apparatus is disposed so as to be positioned in a gap with one side edge of the cover body . The automatic document feeder and a second drive source for driving the automatic document feeder are disposed on the document pressing cover body,
2. The image reading apparatus according to claim 1, wherein the second driving source is disposed so that a lower end side of the second driving source fits into a recess formed in an upper surface of the main body case. One side part of the main body case and one side part of the document pressing cover body are connected via hinge means, and the document pressing cover body is configured to be openable and closable with respect to the main body case,
A reversing conveyance path body for a document conveyed in the automatic document conveyance device is disposed in the vicinity of the other side portion intersecting with one side portion where the hinge means is disposed,
The image reading apparatus according to claim 2, wherein the concave portion is disposed on one side portion of the main body case where the hinge unit is disposed . The first drive means is arranged such that a drive shaft thereof is positioned on a lower surface side of the first transmission member and extends in parallel with the lower surface . The image reading apparatus described in 1. The said 2nd drive means is arrange | positioned so that the drive shaft may be located in the upper surface side of the said 1st permeation | transmission member , and may extend in parallel with the said upper surface. Image reading device.

Images