JPH11227974A - Automatic copy carrier device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply carry out correction work of a skew in a short period of time by furnishing an adjusting mechanism to position a main body at an optional position of a picture image formation device by oscillating it in the longitudinal direction of the picture image formation device around one side of an opening and closing mechanism as its fulcrum and arranging an operation part of the adjusting mechanism in the rear of the other side of the opening and closing mechanism. SOLUTION: A main body 8a is oscillated in the longitudinal direction of a copying machine around a caulking shaft 64c as its fulcrum. A fitting part 68 is projected on an end part of a hinge bracket 61, that is, on the rear side of the copying machine, and an operation part (adjusting screw) 69 is screwed on the fitting part 68. A head end part of the adjusting screw 69 makes contact with a projection 57a formed on a third bracket 57, and the adjusting screw 69 is adjusted from the rear of the copying machine. Consequently, it is possible to move the hinge bracket 61 to the front side of the copying machine on which energizing force of a spring 66 works or to the rear side of the copying machine against energizing force of the spring 66 with the main body 8a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic document feeder provided in an image forming apparatus such as a copying machine, a facsimile machine, and the like. An automatic document feeder that has a main body connected to be openable and closable by a pair of open / close mechanisms, and conveys the placed document to a reading position provided on an upper surface of the image forming apparatus when the main body is in a closed state. Related to the device.

[0002]

2. Description of the Related Art An automatic document feeder (hereinafter simply referred to as an ADF) mounted on an image forming apparatus such as a copying machine or a facsimile machine.
) Is connected to the upper surface of the image forming apparatus by a pair of hinge mechanisms disposed at the rear of the reading apparatus so as to be openable and closable. The document placed on the document placing table is automatically transported to a slit glass or the like by a document transporting means such as.

An original conveyed to the slit glass is read by the image forming apparatus. If the original is inclined with respect to the conveying direction, that is, if skew occurs, the original is read by the image forming apparatus. When the information is recorded on the recording paper, the information is recorded in a state inclined with respect to the recording paper. In order to solve such a problem, in the conventional ADF, the ADF is maintained in an open state,
In this state, there is provided an adjustment mechanism that swings the hinge mechanism on the other side in the front-rear direction of the image forming apparatus with one side of the pair of hinge mechanisms as a fulcrum and positions the hinge mechanism at an arbitrary position on the image forming apparatus, and on the front side of the hinge mechanism. There is one that adjusts the position of an adjustment mechanism by operating an arranged operation unit (for example, see Japanese Patent Application Laid-Open No. 7-219288).

In this apparatus, the skew of the original is corrected by adjusting the position of the ADF, and the original is transported straight to the slit glass, whereby the read information can be normally recorded on the recording paper. .

[0005]

However, in such a conventional ADF, since the ADF is opened to operate the operation unit disposed on the front side of the hinge mechanism, the position of the ADF is reduced. The ADF had to be opened every time the adjustment was made, and the adjustment work of the ADF required much time.

That is, since the ADF is adjusted while the ADF is open, the original cannot be actually conveyed and the original can be read by the slit glass. Therefore, when the skew is corrected, the ADF is opened. After the ADF is adjusted to be in the closed state, the original is conveyed to the slit glass, the original is read and recorded on the recording paper, and the skew is corrected after determining the skew from the state of the image recorded on the recording paper. If not, it is necessary to open the ADF again, adjust the ADF, and perform the above-described checking work. Therefore, it takes a lot of time to adjust the ADF, and the workability of the skew correction work is increased. There was a problem that was troublesome.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an automatic document feeder that can easily perform a skew correction operation in a short time while the main body is closed.

[0008]

According to the first aspect of the present invention,
In order to solve the above-described problem, the image forming apparatus has a main body that is openably and closably connected to a top surface of the image forming apparatus by a pair of opening and closing mechanisms provided at a rear portion of the image forming apparatus, and the main body is in a closed state. In an automatic document feeder for transferring a loaded document to a reading position provided on an upper surface of the image forming apparatus, when the main body is in a closed state, the main body is formed with one side of the opening / closing mechanism as a fulcrum. An adjusting mechanism for swinging the apparatus in the front-rear direction and positioning the image forming apparatus at an arbitrary position, wherein an operation unit of the adjusting mechanism is disposed behind the other side of the opening / closing mechanism; .

In this case, since the operating section of the adjusting mechanism is disposed behind the other side of the opening / closing mechanism, the main body of the automatic document feeder is closed and the main body is moved forward and backward with one side of the opening / closing mechanism as a fulcrum. It can be positioned at any position by swinging in the direction. Then, in this state, the original is fed, conveyed to the reading position, the image of the original is actually read, this image is recorded on a recording sheet to grasp the state of the image, and the image is normally recorded on the recording sheet. If not, the above adjustment operation is repeated until the image is normally recorded on the recording paper. As a result, the skew correction operation can be easily performed in a short time.

According to a second aspect of the present invention, in order to solve the above-mentioned problem, in the first aspect of the present invention, the adjusting mechanism is provided on an upper surface of a rear portion of the main body, and the opening and closing mechanism opens and closes about a rotation axis. A first connecting member for connecting one side of the mechanism to the main body; and a first connecting member provided on a rear upper surface of the main body, and connecting the other side of the opening / closing mechanism to be swingable in the front-rear direction of the main body with the rotation axis serving as a fulcrum. A second connecting member, and a biasing member for biasing the second connecting member together with the main body in one of a forward direction and a backward direction of the image forming apparatus; The second connecting member is provided with the urging force of the urging member together with the main body in a forward or rearward direction of the image forming apparatus or the urging force of the urging member. Any other direction of the front direction or the rear direction to oppose It is characterized by being configured from the adjustment screw to move the.

In this case, the adjusting screw is operated to move the second connecting member forward or backward of the image forming apparatus, and the main body is swung together with the second connecting member about the rotation axis of the first connecting member. By moving the main body, the main body can be easily adjusted from the rear side on the other side of the opening / closing mechanism.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 8 are views showing an embodiment of an automatic document feeder according to the present invention. The image forming apparatus can be applied to a copying machine, a facsimile machine, and the like. In the present embodiment, an example in which the image forming apparatus is applied to a copying machine will be described.

First, the configuration will be described. In FIG. 1, 1
Is a copying machine, and a slit glass 2 serving as a reading position is provided on an upper portion of a main body 1a of the copying machine 1, and the slit glass 2 has an area corresponding to an image of several lines of a document. Below the slit glass 2, reading means including an exposure lamp 3, a first mirror 4, a lens 5, and a second mirror 6 is provided.
When the original is read at the reading position, the surface of the original is illuminated by the exposure lamp 3, and the reflected light is applied to the photosensitive drum 7 via the first mirror 4, the lens 5, and the second mirror 6. Is formed.

The electrostatic latent image formed on the photosensitive drum 7 is made to adhere with toner or the like by a developing device (not shown). This toner image is transferred to a recording sheet by a transfer charger and then fixed. By fixing the toner image on the recording paper by the member, the image of the document is transferred onto the transfer paper. Note that the photosensitive drum, the developing device, the transfer charger, and the fixing member constitute an image forming unit.

An automatic document feeder (hereinafter, simply referred to as an ADF) 8 is mounted on the upper surface of the copying machine 1. The ADF 8 is controlled by a pair of opening / closing mechanisms (described later) provided at a rear portion of the main body 8a. It is connected to the copying machine 1 so that it can be opened and closed. The ADF 8 has a document table 9 on which a document bundle composed of a plurality of documents whose document surfaces face upward can be placed, and the document table 9 can swing about a fulcrum 9a. An abutment plate 10 is provided on the downstream side of the original table 9 in the original transport direction, and the bundle of originals placed on the original table 9 is abutted against the abutment plate 10 and set at the sheet feeding position. It has become.

A bottom plate 11 is provided above the abutment plate 10. The bottom plate 11 is driven by a bottom plate solenoid (not shown), and is driven between a position indicated by a solid line and a position indicated by a broken line. ing. When a copy start signal is input from the copying machine 1, the document is raised to the position shown by the broken line and the original is pressed against the call roller 12.

The calling roller 12 feeds an upper document from the document stack P. The uppermost document is separated by a separating means including a separation belt 13 and a separating roller 14. The separated original document is nipped by a pull-out drive roller 15 and a pull-out driven roller 16 to form a first transport path 17.
Along the slit glass 2.

A registration sensor 18 is provided near the pull-out drive roller 15, and detects the leading edge of the document and outputs a signal to a controller (not shown). The controller uses this sensor
Reading of the document is started based on the signal from 18, and if the leading edge of the document is not detected even after a lapse of a fixed time after the input of the feed start signal, it is determined that a document jam has occurred.

The document that has passed through the slit glass 2 is transported to a second transport path 20 while being sandwiched between a transport drive roller 21 and a transport driven roller 22. The sheet is nipped by a lower driven roller 24 and is discharged onto a sheet discharge section 25 provided below the document table 9. A paper ejection sensor 26 is provided near the paper ejection drive roller 23.
Is configured to detect the leading edge of the document and output a signal to the controller. The controller may control whether the paper ejection sensor 26 does not detect the leading edge of the document after a certain period of time has elapsed since the document reading was started, or if the paper ejection sensor 26 does not If the trailing edge of the document is not detected, it is determined that the document is jammed.

A switching claw 27 is provided on the downstream side of the paper discharge drive roller 23 in the document conveying direction. The switching claw 27 is switched between a position shown by a solid line and a position shown by a broken line by a switching solenoid (not shown). It is driven to swing. Switching claw
Reference numeral 27 denotes a double-sided original which is switched to the position shown by a solid line when a single-sided original is conveyed, thereby discharging the original to the paper output unit 25, and is also switched to a position shown by a broken line when a double-sided original is conveyed, and one-sided reading is completed. Alternatively, the double-sided document whose both sides have been read is transported to a third transport path 29 formed between the document table 9 and an intermediate tray 28 provided below the document table 9.

When the switching claw 27 is switched, when the leading edge of the double-sided document for which one-side reading has been completed or the leading end of the double-sided document for which both-side reading has been completed is detected by the paper discharge sensor 26, the controller performs the processing based on this detection information. By driving the switching solenoid, the switching claw 27 is switched to the position shown by the broken line. In addition, the intermediate tray 28 is provided with a reversing drive roller 30 that can be rotated forward and backward, and the document table 9 is provided with a reversing driven roller 31 that slides on the reversing drive roller 30. When the trailing edge of the document conveyed to the sensor is detected by the paper ejection sensor 26, the controller drives the switching solenoid after a lapse of a predetermined time from the input of the detection information of the sensor 26, and the switching claw 27 is indicated by a solid line. Is switched to.

At the same time, the reverse driving roller 23 is driven to rotate in the reverse direction from the clockwise direction, which is the normal rotation direction, in the counterclockwise direction, and the document is switched back to the fourth transport path 32. This original is driven by the paper discharge drive roller 23 and the paper discharge driven
The first transport path 17 is sandwiched between the first transport path 17 and the fourth transport path 32.
To be transported. Also, reversing drive roller
An inversion sensor 34 is provided in the vicinity of 30. The inversion sensor 34 detects the leading edge of the document and outputs a signal to the controller. The controller determines that a document jam has occurred if the reversing sensor 34 does not detect the leading edge of the document even after a certain period of time has elapsed after the reading of the document has been completed.

Further, the trailing end of the original is detected by the paper ejection sensor 26, and the paper ejection drive roller 23 is stopped until a predetermined time elapses after the detection information of the sensor 26 is inputted by the controller. The leading edge of the document to be switched back from the third transport path 29 (the trailing edge before the switchback is the trailing edge) is a discharge drive roller 23 and a discharge upper driven roller.
After the skew of the document is corrected when entering the nip portion 33, the document is conveyed to the fourth conveyance path 32 by driving the paper ejection drive roller 23.

Next, an opening and closing mechanism for opening and closing the ADF 8 with respect to the copying machine 1 will be described with reference to FIGS. As shown in FIG. 2, a pair of hinge mechanisms 51 and 52 are provided at a rear portion of the main body 8a of the ADF 8, and the hinge mechanisms 51 and 52 connect the main body 8a and the copying machine 1. Since the hinge mechanisms 51 and 52 have the same configuration except for a part of the configuration, the same configuration is denoted by the same reference numeral.

In FIGS. 3 and 4, hinge mechanisms 51 and 52 have a first bracket 53 fixed to the copying machine 1 and a first bracket 53 having one end rotatably connected to the bracket 53 via a shaft member 54. A second bracket 55, and third brackets 56, 57 attached to the outer periphery of the second bracket 55 and having a substantially U-shaped cross section.
have. 3A is a side view of the hinge mechanism, FIG. 3B is a front view thereof, and FIG.
It is a rear top view of a.

The third brackets 56 and 57 have a pair of shaft members 5.
8 and 59 are attached, and the shaft member 59 is inserted into a slit 55 a formed at the other end of the second bracket 55. Further, the second bracket 55 and the third brackets 56 and 57
A spring (not shown) is interposed between the second bracket 55 and the third bracket 56, 57.
It is urged in the direction away from.

A hinge bracket 60, 61 as shown in FIGS. 5 and 6 is fixed to the rear upper surface of the main body 8a of the ADF 8 by welding or screwing, and the hinge bracket 60 has two slits 60a. , 60b and one opening hole 60c, and a hinge bracket 61
Are formed with three slits 61a to 61c. Fixing brackets 62 and 63 are slidably in contact with the hinge brackets 60 and 61. Openings 62a to 62c and 63a to 63c are formed in the fixing brackets 62 and 63, respectively.

The third brackets 56 and 57 are provided with a caulking shaft.
64a to 64c and 65a to 65c protrude, and screw grooves are formed inside the caulking shafts 64a to 64c and 65a to 65c. The caulking shafts 64a to 64c and 65a to 65
Are slits 60a, 60b, opening hole 60c and slit 61a.
61c, and extends to the opening holes 62a to 62c and 63a to 63c. By attaching screws (not shown) to the caulking shafts 64a to 64c and 65a to 65,
The fixed brackets 62, 63 are attached to the third brackets 56, 57 via hinge brackets 60, 61.

Therefore, the third brackets 57, 58 of the hinge mechanisms 51, 52 are directly attached to the fixed brackets 62, 63 and connected to the main body 8a via the hinge brackets 60, 61. The caulking shaft 64c is inserted into the opening hole 60c by a screw, and the caulking shaft 64a forms a rotation fulcrum. That is, when the main body 8a is swung in the front-rear direction of the copying machine 1 with the caulking shaft 64c as a fulcrum, the caulking shaft
Slits 60a, 60a along 64a, 64b and 65a-65c
Since the hinge brackets 60 and 61 move together with the main body 8a by the length in the extending direction of b and 61a to 61c, the main body 8a swings in the front-rear direction of the copying machine 1 with the hinge mechanism 51 side as a fulcrum.

A spring (biasing member) 66 is interposed between the fixed bracket 63 and the hinge bracket 61. One end of the spring 66 is formed at the bottom of the fixed bracket 63 as shown in FIG. The other end is attached to an engaging claw 67 formed on the hinge bracket 61, and the spring 66 urges the hinge bracket 61 together with the main body 8a toward the front of the copying machine 1. doing.

On the other hand, a mounting portion 68 protrudes from an end of the hinge bracket 61, that is, a rear side of the copying machine 1.
An adjusting screw (operating section) 69 is screwed into the mounting section 68. The tip of the adjusting screw 69 is in contact with a projection 57a formed on the third bracket 57. By adjusting the adjusting screw 69 from the rear of the copying machine 1, the hinge bracket 61 and the main body 8a are moved together with the spring 66. The spring is moved to the front of the copying machine 1 on which the urging force acts or to the rear of the copying machine 1 against the urging force of the spring 66.

In this embodiment, the hinge bracket 60 and the fixed bracket 62 constitute a first connecting member, and the hinge bracket 61 and the fixed bracket 63 constitute the second connecting member.
A connecting member is formed. In addition to the first and second connecting members, the spring 66 and the adjusting screw 69 form an adjusting mechanism. Next, the operation will be described. <Single-sided original conveyance> After placing the original bundle on the original table with the original surface facing upward, the leading edge of the original bundle is abutted against the abutment plate 10, and then pressing the copy start switch, the solenoid 100 causes the bottom plate 11 to move. The document bundle is raised and the pressing roller 12 is pressed.

Next, after the upper original is fed from the original bundle P by the call roller 12, the uppermost original is separated by the separation belt 13 and the separation roller 14, and the separated original is pulled out. The first transport path 17 is sandwiched between the driving roller 15 and the pull-out driven roller 16 and
Along the slit glass 2. When the leading edge of the document is detected by the registration sensor 18, reading is started. At this time, the original conveyed to the slit glass 2 is irradiated with light by the exposure lamp 3, and the reflected light of the original is focused on the photosensitive drum via the first mirror 4, the lens 5 and the second mirror 6. Thus, an electrostatic latent image is formed on the photosensitive drum, and the electrostatic latent image is transferred to recording paper by the above-described image forming unit.

Next, the document passing through the slit glass 2 is nipped by the transport drive roller 21 and the transport driven roller 22 and transported to the second transport path 20. The switching claw 27 is moved to the position shown by the solid line by the solenoid 101. Therefore, the document sandwiched between the sheet discharge drive roller 23 and the sheet discharge lower driven roller 24 is discharged onto the sheet discharge unit 25 with the document surface facing down. <Conveying Double-sided Document> In this embodiment, a double-sided document whose front side (the document surface to be read first) faces upward is placed on the document table 9 and the document is fed as described above. Then
The document that has passed through the slit glass 2 is conveyed while being sandwiched between a discharge drive roller 23 and a discharge lower driven roller 24. At this time, when the leading edge of the document is detected by the paper discharge sensor 27, the switching claw 27 is switched to the position shown by the broken line, and the document is transported to the third transport path 29.

Next, the document conveyed to the third conveyance path 29 is nipped by the reversing drive roller 30 and the reversing driven roller 31 and conveyed on the third conveyance path 29, and the trailing end of the document is detected by the paper discharge sensor 26. When it is detected, the switching claw 27 is switched to the position shown by the solid line by the solenoid 101 after a certain time has elapsed. At this time, the reversing drive roller 23 is driven to rotate in the counterclockwise direction to switch the document back to the fourth transport path 32. After the skew is corrected by entering the nip portion between the paper discharge drive roller 23 and the paper discharge upper driven roller 33 in the document stopped state in which the switchback is performed, the paper discharge drive roller 23 is driven again to discharge the paper. The sheet is nipped between the driving roller 23 and the driven roller 33 above the paper discharge, is reversed through the fourth conveyance path 32 and the first conveyance path 17 so that the surface thereof is lower, and is conveyed to the slit glass 2, and the original surface is read as described above. Is performed.

The original having been read is sent to the paper output unit 25 as it is.
If the document is discharged to the second path, the pages of the document will be out of order. After being conveyed to the second conveyance path 20 and the third conveyance path 29 by the same procedure as described above,
The sheet is conveyed onto the slit glass 2 through the conveyance path 32 and the first conveyance path 17. At this time, since the switching claw 27 returns to the position indicated by the solid line, the sheet is discharged onto the sheet discharge table 25 through the second transport path 20 without performing reading.

Next, a method for correcting skew will be described. The hinge mechanisms 51 and 52 of the present embodiment connect the main body 8a to the copying machine 1 so as to allow the opening and closing operation of the main body 8a of the ADF 8. Then, as the main body 8a moves to the closed state, the third brackets 56, 57 move with respect to the second bracket 55 so that the lengths of the second bracket 55 and the third brackets 56, 57 become shorter, and the springs The biasing force is increased so that the main body 8a does not fall into the slit glass 2 side, and as the main body 8a moves to the open state, the second
The third brackets 56 and 57 are attached to the second bracket 55 so that the lengths of the bracket 55 and the third brackets 56 and 57 become longer.
Moves to reduce the biasing force of the spring, and the body 8a
To be released smoothly.

Here, if the document conveyed in the main body 8a is inclined with respect to the conveyance direction, that is, if the skew occurs, the image is not normally read by the reading means, so that the image forming means forms the recording paper. The image recorded on the recording paper is inclined with respect to the recording paper. In the present embodiment, in order to prevent this skew, the main body 8a is adjusted in the front-rear direction of the copying machine 1 to correct the inclination of the document with respect to the transport direction.

In this correcting operation, when the adjusting screw 69 is rotated from the rear of the copying machine 1 to one side with the main body 8a closed (the state of FIG. 2), the adjusting screw 69 is rotated.
The hinge bracket 61 moves to the rear side of the copying machine 1 in FIG. 2 together with the main body 8a against the urging force of the spring 66 in order to move to the projection 57a side of the third bracket 56 fixed to the third bracket 56.

At this time, the slit 60 is formed along the swaging shafts 64a, 64b and 65a to 65c with the swaging shaft 64c as a fulcrum.
The hinge brackets 60 and 61 move together with the main body 8a by the length of the extension directions a, 60b and 61a to 61c, and the main body 8a swings rearward in the copying machine 1 with the hinge mechanism 51 side as a fulcrum. On the other hand, when the adjustment screw 69 is rotated from the rear of the copying machine 1 to the other side with the main body 8a closed, the adjustment screw 69 is rotated.
Move in the direction away from the projection 57a, the hinge bracket 61 is urged by the spring 66 and moves together with the main body 8a to the front side of the copying machine 1 in FIG.

At this time, the slit 60 is formed along the swaging shafts 64a, 64b and 65a to 65c with the swaging shaft 64c as a fulcrum.
The hinge brackets 60 and 61 move together with the main body 8a by the length in the extending direction of a, 60b and 61a to 61c, and the main body 8a swings forward of the copying machine 1 with the hinge mechanism 51 side as a fulcrum. In this manner, the main body 8a is positioned by swinging the copying machine 1 in the front-rear direction, and after positioning, the document is fed, conveyed to the slit glass 2, and the image of the document is actually read, and this image is recorded on the recording paper. Then, the state of the image is grasped, and when the image is not normally recorded on the recording paper, the above-described adjustment operation is repeated until the image is normally recorded on the recording paper to correct the skew.

As described above, in this embodiment, since the adjusting screw 69 is disposed behind the hinge mechanism 52, the main body 8a is swung in the front-rear direction of the copying machine 1 with the hinge mechanism 51 as a fulcrum with the main body 8a closed. It can be moved and positioned at any position. As a result, the skew correction operation can be easily performed in a short time. In addition, the adjustment mechanism is
a hinge bracket which is provided on the rear upper surface and connects one side of the opening / closing mechanism to the main body 8a about the caulking shaft 64a.
A hinge bracket provided on the rear upper surface of the main body 8a and the fixing bracket 62, and connecting the hinge mechanism 52 to the main body 8a so as to be movable in the front-rear direction with the caulking shaft 64a as a fulcrum.
A spring 66 for biasing the hinge bracket 61 together with the main body 8a in the forward direction of the copying machine 1 together with the fixing bracket 63 and the fixing bracket 63.
And an adjusting screw 69 provided to be located behind the hinge mechanism 51 and moving the hinge bracket 61 together with the main body 8a in a direction in which the urging force of the spring 66 acts or in a direction against the urging force of the spring 66. Therefore, by swinging the main body 8a together with the hinge bracket 61 with the swaging shaft 64a of the hinge bracket 60 as a fulcrum, the main body 8a can be easily adjusted from behind the hinge mechanism 52.

[0043]

According to the first aspect of the present invention, since the operating portion of the adjusting mechanism is disposed behind the other side of the opening / closing mechanism, one side of the opening / closing mechanism is supported with the main body of the automatic document feeder closed. Thus, the main body can be swung in the front-rear direction of the image forming apparatus and positioned at an arbitrary position. As a result, the skew correction operation can be easily performed in a short time.

According to the second aspect of the present invention, the second connecting member is moved in the forward or backward direction of the image forming apparatus by operating the adjusting screw, and the second connecting member is moved about the rotation axis of the first connecting member as a fulcrum. By swinging the main body together with the two connecting members, the main body can be easily adjusted from the rear on the other side of the opening / closing mechanism.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an embodiment of an automatic document feeder according to the present invention.

FIG. 2 is a diagram of the copying machine according to the embodiment as viewed from above.

FIG. 3A is a side view of a hinge mechanism according to an embodiment;
FIG. 2B is a front view of the same seen from the direction A in FIG.

FIG. 4 is a top view of a rear part of a main body of the automatic document feeder according to the embodiment;

FIG. 5A is a front view of one hinge bracket of one embodiment, and FIG. 5B is a bottom view of the hinge bracket.

FIG. 6A is a front view of the other hinge bracket of one embodiment, and FIG. 6B is a bottom view of the hinge bracket.

FIG. 7A is a front view of the other fixing bracket of one embodiment, and FIG. 7B is a bottom view of the fixing bracket.

FIG. 8 is a rear view of the hinge mechanism and the adjustment mechanism on the other side of the embodiment.

[Explanation of symbols]

 2 Slit glass (reading position) 8 ADF (automatic document feeder) 8a Main body 51 Hinge mechanism (one open / close mechanism) 52 Hinge mechanism (the other open / close mechanism) 60 Hinge bracket (first connecting member, adjustment mechanism) 61 Hinge bracket (Second connecting member, adjusting mechanism) 62 Fixed bracket (first connecting member, adjusting mechanism) 63 Fixed bracket (second connecting member, adjusting mechanism) 64c Swaging shaft (rotating shaft) 66 Spring (biasing member, adjusting mechanism) ) 69 Adjustment screw (operation unit, adjustment mechanism)

Claims (2)

[Claims] An image forming apparatus has a main body which is openably and closably connected to a top surface of the image forming apparatus by a pair of opening and closing mechanisms provided at a rear portion of the image forming apparatus, and is mounted when the main body is in a closed state. An automatic document feeder that feeds a read original to a reading position provided on the upper surface of the image forming apparatus, wherein the main body is closed when the main body is in a closed state, and one side of the opening / closing mechanism is used as a fulcrum before and after the image forming apparatus. Automatic manuscript feeder having an adjusting mechanism that swings in a direction to position the image forming apparatus at an arbitrary position, and an operation unit of the adjusting mechanism is disposed behind the other side of the opening / closing mechanism. apparatus. A first connecting member provided on a rear upper surface of the main body, the first connecting member connecting one side of the opening and closing mechanism to the main body about a rotation axis; A second connecting member for pivotally connecting the other side of the opening and closing mechanism in the front-rear direction of the main body with the rotation axis as a fulcrum; and a front or rear of the image forming apparatus together with the second connecting member together with the main body. A biasing member for biasing in any one of directions, the operating portion is provided so as to be located behind the other side of the opening / closing mechanism, and the biasing member is provided with the second connecting member together with a main body. And an adjusting screw for moving in one of the front and rear directions of the image forming apparatus on which the urging force acts or in the other of the front and rear directions against the urging force of the urging member. 2. The automatic document feeder according to claim 1, wherein: apparatus.