JPH02247635A - Image forming device - Google Patents

Abstract

PURPOSE:To realize excellent image formation even with a folded original and a thin original which cannot be automatically fed by providing a supporting means which supports the original by allowing an original holding body to shift to a position which covers an original feeding body and covering the whole original. CONSTITUTION:The left edge part of the platen sheet 12 is a thin part 12d, and on the left edge side of the thin part 12d, a platen sheet sliding mechanism 49 as the original holding body supporting means and a platen sheet contact/ separation mechanism 50 as an original holding body contact/separation means are provided. The platen sheet sliding mechanism 49 is composed of a linking means 51, which supports the platen sheet 12 under the condition that the platen sheet 12 can be shifted along a platen cover 10, and an operation lever 52. When the operation lever 52 is turned in an arrowed direction C, the platen sheet 12 shifts in an arrowed direction (d) and the left edge thin part 12d of the platen sheet 12 is inserted to the bottom plane position of a feeding roll 13. Therefore, the whole original D is covered by the platen sheet 12, and the image formation is surely performed.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Field of Application) The present invention relates to an image forming apparatus such as an electronic copying machine, and more specifically, the present invention relates to an image forming apparatus such as an electronic copying machine, and more specifically, the present invention relates to an image forming apparatus such as an electronic copying machine. The present invention relates to an image forming apparatus equipped with a document feeding device that automatically takes in a printed document, sets it on a document table, and discharges the document after image formation.

(Prior Art) Conventionally, in an image forming apparatus equipped with a document feeder (ADF, 5DF), the document feeder has a wide endless conveyor belt and a wide endless conveyor belt on a part of the cover that overlaps the document table. It has a built-in belt drive mechanism that rotates the
By running the conveyor belt, a document that has been manually fed to a predetermined position is fed onto and set on the document placement table, and the document on the document placement table is ejected.

However, the conveyor belt-type document feeder has the following problems because the cover portion includes a wide conveyor belt and a belt drive mechanism for driving the conveyor belt. That is, the cost of a portion of the cover is high, and this portion occupies more than half of the total cost of the automatic document feeder.

In addition, a portion of the cover is heavy, making it difficult to open and close it. In addition, since the wide conveyor belt rotates in contact with substantially the entire surface of the document table, there is a problem in that it not only requires a large amount of power and power, but also causes noise.

Therefore, recently, as a document feeder that can solve this problem,
This is the so-called document feed type, in which the original is fed to a predetermined position by a document feeder that can move toward and away from the document placement table, and is fed between the document holding body of the document holding cover and the document placement table, and then ejected after image formation. Document feeding devices have been developed and are being put into practical use.

This device eliminates the need for a wide conveyor belt, a belt drive mechanism, etc., which were conventionally required, making it possible to simplify the configuration, reduce weight, and reduce cost.

Furthermore, since the original document presser cover is lightweight, it not only can be opened and closed in the same way as a normal document presser, but also has improved operability when handling thick originals such as books. Also,
Since the original is set between the original sending body and the original placing table, there is an advantage that the reliability when sending out the original can be improved.

However, in the conventional feed-in type document feeder, the document feeder portion cannot be covered by the document presser.

Therefore, when you close the document holding cover to hold down a document that has a tendency to fold so that it cannot be automatically fed, the document will rise up and securely adhere to the document loading table because there is no document holding body near the document feeder. It is not possible to obtain a good copy. Further, when the document is thin, there is a problem in that the shadows of the edge of the document presser and the document feeder appear on the copy.

(Problems to be Solved by the Invention) As described above, in the conventional feed-type document feeder, the entire document cannot be held by the document presser, and when the document is folded or thin and cannot be automatically fed. Another problem was that poor image formation occurred.

The present invention has been made based on the above circumstances, and an object thereof is to provide an image forming apparatus capable of forming good images even on folded or thin originals that cannot be automatically fed. It is.

[Structure of the Invention] (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention, as a first means, automatically captures a document fed to a predetermined position and places it on a document tray. An image forming apparatus is provided with a document feeding device configured to set the document on the document tray and eject the document after forming an image, the document presser being superimposed on the document set on the document tray, and a document holding device that is placed on the document tray and with respect to the document tray. A document feeder is provided so as to be movable toward and away from the document feeder, and inserts the document fed to a predetermined position between the document presser and the document placement table and ejects the document after forming an image. The document feeder includes a document presser contact means for displacing the document presser to form a gap with the placing table, and a support means for movably supporting the document feeder. It is something.

Further, as a second means, the image forming apparatus is provided with a document feeding device that automatically takes in the document fed to a predetermined position, sets it on the document table, and discharges the document after image formation. , a document holding cover provided with a document holding body that overlaps the document set on the document placing table; and a document holding cover provided so as to be able to move toward and away from the document placing table, and holding the document fed to a predetermined position by the document holding body; a document presser that is inserted between the document tray and the document tray and discharges the document after image formation; and a document presser that displaces the document presser to form a gap between the document tray and the document tray when the document tray is used to take out and take out the document. body contact/separation means; link means for supporting the document holding body in a state in which it can move along the document holding cover; and a linking means provided on the outside of the document holding cover; This configuration includes a document feeder having an operation lever for moving the document presser to a covering position.

(Function) That is, according to the first means, although it is a document feeding type document feeding device which has various features compared to a conveyor belt type, it is possible to move the document holding body to a position covering the document sending body. This allows you to press the entire document. This ensures that even if the document cannot be automatically fed with folds or thin documents, image formation defects such as the document lifting up or the shadows of the edge of the document presser and the document feeder appearing on the copy will not occur. It becomes possible to form an image.

According to the second means, in addition to the action of the first means, the document presser can be moved to a position covering the document feeder by operating an operating lever provided on the outside of the document presser cover. , it becomes possible to improve operability.

(Example) Hereinafter, one example of the present invention will be described with reference to FIGS. 1 to 17.

2 and 3 show the structure of the upper part of the image forming apparatus. 1 in the figure is charging, ix light, development, and transfer.

This is an apparatus main body that incorporates image forming process constituent means (not shown) such as cleaning and fixing, and on the top surface of this apparatus main body 1, there is a platen glass 3 that serves as a document placement table for receiving a document fed from a document tray 2. A document feeder (SDF) 4 is provided that automatically takes in and sets the document on the platen glass 3 and discharges the document on the platen glass 3. moreover,
On the front edge of the top surface of the main body 1 of the device, there is a numeric keypad 5. Information display section 6. An operation panel 8 on which a copy key 7 and the like are arranged is arranged.

Further, a paper feed cassette (not shown) containing paper such as plain paper to be supplied to the image forming process configuration means is installed on the right side of the apparatus main body 1, and a paper feed cassette (not shown) is installed on the left side of the apparatus main body 1. is equipped with a paper discharge tray 16 (see FIG. 17) that collects sheets P in the fixing flow.

Moreover, on the platen glass 3, there is a maximum of A3 size (
The left scale 9 is located on the exposure start side of the exposure means, which will be described later.
can be set based on.

As shown in FIG. 1, the document feeder (SDF) 4 is roughly divided into a document holding cover (hereinafter referred to as a platen cover) 10 that is superimposed on the platen glass 3, and a document that is manually fed from the document tray 2. A taking-in means 11 automatically takes in the document, and a document taken in by this taking-in means 11 is sent between a platen sheet 12 and a platen glass 3, which will be described later, on a platen cover 10, and the left scale 9 is used as a reference. A feed roller 13 as a document sending body that sets the set document as a document and discharges the set document from between the platen sheet 12 of the platen cover 10 and the platen glass 3 after the copying operation is completed, and the document document discharged by the feed roller 13. Original ejecting means 1 that receives and ejects the original to the original ejecting section 14 formed on the upper surface of the platen cover 10.
It consists of 5.

The platen cover 10 has a hinge member 20 on its rear end side.
20 (see Fig. 3), and is attached to the main body 1 of the apparatus via It is designed so that it can be left open. Note that each of the hinge members 20 and 20 has a support shaft (not shown), and these support shafts are installed by inserting them into holes (not shown) formed on the top surface of the device main body 1. There is. It can be pulled upwards from the main body 1 of the apparatus, so that even when copying thick items such as books, the platen sheet 12, which serves as a document presser for the platen cover 10, can be kept parallel to the platen glass 3 so that it can be evenly copied. It's meant to be pushed.

Further, as shown in FIG. 4, the taking-in means 11 includes a guide plate 21a, a guide plate 21b, a movable guide 22...
・A document take-in path 23 is formed by mutually opposing surfaces, and a drive roller 2 is provided at the starting end of the document take-in path 23.
4a and pinch roller 24b
4 is placed.

Further, the movable guides 22 are lowered by gravity or light force around the shaft 25, and the lower ends thereof are recesses 26 formed on the upper surface of the left scale 9.
・It is stuck inside.

Then, when the document enters the document intake path 23,
It is designed so that it can be easily lifted and the document can be guided to the feed roller 13 side. In addition, the document discharged by the feed roller 13 does not return to the document take-in path 23, and can be reliably guided into the document discharge path 27, which will be described later.

Further, the document ejecting means 15 has a drive roller of the pair of take-in rollers 24 at the end of a document ejecting path 27 formed between the mutually opposing surfaces of the guide plate 21b, the movable guides 22, . . . and the guide plate 21c. The configuration includes a pair of discharge rollers 28 consisting of a pinch roller 24a and a pinch roller 28a.

Further, as shown in FIG. 5, the feeding roller 13 serving as the feeding means is supported by the free ends of a pair of rotating arms 30.degree. The pair of rotating arms 30.30 are attached to a pickup shaft 31, and a link 33 is attached to one end of the pickup shaft 31 to rotate against the biasing force of a spring 32 to rotate the feed roller 1.
A solenoid 35 is connected to the feed roller shaft 34 to which the roller 3 is attached.

Also, a pulley 36 attached to the feed roller shaft 34
A timing belt 38 is stretched between the pulley 37 attached to the pickup shaft 31, and a pulley 39 integrated with the pulley 37 attached to the pickup shaft 31 and a drive shaft 4o.
A timing belt 42 is stretched between the pulley 41 and the pulley 41 attached to the timing belt 42 . The drive shaft 4.degree. is selectively rotated in the forward or reverse direction by a drive motor (not shown), thereby causing the feed roller 12 to rotate in the forward or reverse direction.

Further, the common rollers 24a of the intake roller pair 24 and the discharge roller pair 28 are driven by a motor whose rotation axis is not shown.

As shown in FIG. 4, the platen cover 10 includes a platen sheet 12, which serves as a document holder and is formed to have approximately the same size as the platen glass 3, and a rear end thereof via the hinge member 20, 20. The cover body 45 is attached to the apparatus body 1 and covers the platen sheet 12 except for the lower surface thereof. In addition, the platen sheet 12 is shown in FIGS. 4 and 6.
As shown in the figure and FIG. 7, an elastic member 12a made of urethane or the like, a white sheet 12b with a low coefficient of friction attached to the lower surface of the elastic member 12a, and a movable frame rotatably attached to the cover body 45. 12c.

Support shafts 47, 47 that serve as rotational fulcrums are protruded from both the front and rear end surfaces of the right end side of the movable frame 12, and a guide hole 48a consisting of a long hole of a guide member 48°48 is attached to the cover body 45 side. , 43a. It is slidable in the direction of the arrow a in FIG. 6 and rotatable in the direction of the arrow.

The left end of the platen sheet 12 is a thin wall portion 12d, and as shown in FIG. A platen sheet contact/separation mechanism 50 is provided.

Then, by the platen sheet sliding mechanism 49, the eighth
As shown in the figure, the left end thin section 12 of the platen sheet 12
d is moved to the lower surface position of the feed roller 13 (the state shown by the solid line). In addition, as shown in FIG. 9, the platen sheet contact/separation mechanism 50
The platen sheet 12 can be placed in a state shown in two-dot chain line in which the entire platen sheet 12 is brought into close contact with the platen glass 3, and in a solid line state in which a gap G having an angle e is formed on the lower surface of the platen sheet 12.

As shown in FIG. 1B, the platen sheet sliding mechanism 49 is roughly divided into link means 5 that supports the platen sheet 12 so that it can move along the platen cover 10.
1, and an operation lever 52 for operating the link means 51 from outside the platen cover 10. The link means 51 has a structure in which link mechanisms 54 and 54 attached to a shaft 53 that rotates together with the rotation of the operating lever 52 are connected to the left end portion of the platen sheet 12. Then, as shown in FIG. 1B, when the operating lever 52 is rotated in the direction of arrow C, the platen sheet 12
slides in the direction of arrow d, and as shown in FIG.

Further, as shown in FIG. 10, the platen sheet contact/separation mechanism 50 includes an eccentric cam roller 55.55 that rolls into contact with the upper surface of the left end thin wall portion 12d of the platen sheet 12, and a drive mechanism 56 that drives the eccentric cam roller 55.55. It consists of. The drive mechanism 56 connects the motor 5 to a shaft 57 to which eccentric cam rollers 55, 55 are attached via a worm gear mechanism 58.
It is configured to transmit the driving force of 9. Further, when the platen sheet contact/separation mechanism 50 operates, the document is in a state in which automatic feeding is possible, that is, in a state in which the platen sheet 12 is separated from the moving path of the feed roller 13 as shown in FIG.

Further, the left end side of the platen sheet 12 is always pushed up by a biasing member (not shown), and the first
As shown in FIG. 2, the upper surface of the left end thin wall portion 12d is in contact with the eccentric cam roller 55.55. and,
As shown in FIG. 12(a), a gap G is formed between the platen sheet 12 and the platen glass 3 when the minimum eccentric portion of the eccentric cam roller 54 is in contact with the upper surface of the left end thin wall portion 12d of the platen sheet 12. It looks like this. Further, as shown in FIG. 12(b), the maximum eccentric portion of the eccentric cam roller 54 is located at the left end thin portion 1 of the platen sheet 12.
2d, the platen sheet 12 is pushed down to a horizontal state, and the platen sheet 1
2 comes into close contact with the platen glass 3.

Then, at the timing of supplying and discharging the original, the motor 59 is driven to rotate the eccentric cam roller 55, 55 by 180 degrees in response to a signal from a control section (not shown), and the platen sheet 12 is opened and closed.

Further, as shown in FIG. 13, when the maximum eccentric portion of the eccentric cam roller 54 is in contact with the upper surface of the left end thin wall portion 12d of the platen sheet 12, by tilting the operating lever 52 clockwise (in the direction of arrow C), Move to the left (direction of arrow d), and as shown in FIG. 1A, the left end thin section 12d
The feed roller 13 can be supported in a horizontal state by being inserted into the lower surface of the feed roller 13.

Further, as shown in FIG. 4, an exposure optical system 65 as an exposure means is disposed on the lower surface side of the platen glass 3, and scans an original set on the platen glass 3 to form an image (not shown). An image corresponding to the document is formed on the carrier.

The exposure optical system 65 includes an exposure lamp 67 whose back is surrounded by a reflector 66 and which irradiates light onto the original, and first to third mirrors 69, 70, 71 that receive reflected light from the original and guide it to a lens 68. and a fourth one that guides the light that has passed through the lens 68 to the image carrier. Fifth mirror (not shown)
It is equipped with the following. Further, the exposure lamp 67 and the first mirror 69 are mounted on a first carriage 72, and the third mirror 70 and fourth mirror 71 are mounted on a second carriage 73, respectively. In addition, these carriages 72
．． 73 is a carriage drive means (not shown) that moves the first carriage 72 at a speed of V and the second carriage 73 at a half speed of V/2 in the right direction (
It is configured to be able to move in the direction of arrow A), performs scanning exposure with a constant optical path length, and returns to the home position shown by the solid line in FIG. 4 after scanning exposure. Note that this exposure operation and the image forming operation after exposure are well known, so detailed explanations will be omitted.

Next, with reference to FIG. 14, the operation of supplying and discharging a document onto the platen glass 3 by the document feeder 4 will be described.

First, as shown in FIG. 14(a), a document manually fed through the document tray 2 is taken into the document take-in path 23 via a pair of take-in rollers 24. As shown in FIG.

At this time, the feed roller 13 and the platen sheet 12 are in a raised state. Further, the document feeder is fed by the pair of take-in rollers 24, and the leading edge of the document feeder advances while pushing up the movable guide 22, and enters under the feed roller 13. At this time, the left scale 9 is in a state of being moved upward.

Then, as shown in FIG. 14(b), the feed roller 13
rotates and descends to come into contact with the document tray, and as the document rotates, the document tray is conveyed to the right over the platen glass 3.

At this time, a gap G is formed between the platen glass 3 and the platen sheet 12, and since the platen glass 3 and the white sheet 12b of the platen sheet 12 are low-friction members, the document can be fed smoothly. It never bends.

Then, as shown in FIG. 14(C), the rear end of the manuscript (
When the left end (left end) is conveyed to the right by a distance δ from the end surface of the left scale 9, the feed roller 13 stops. Then, the feed roller 13 rotates in the opposite direction, and as shown in FIG. 14(d), the rear end of the document tray is brought into contact with the end surface of the left scale 9 to perform positioning and skew correction. Next, as shown in FIG. 14(e), the platen sheet 12 is lowered to bring the original into close contact with the platen glass 3, and in this state, the moving optical system of the exposure device (not shown) moves in the direction of the arrow to move the original into close contact with the platen glass 3. Exposure scanning is performed on the image.

Then, when this document scanning is completed, the platen sheet 12 is raised to form a gap G, and the left scale 9 is lowered, as shown in FIG. 14(f). Then, the feed roller 13 rotates in the opposite direction to transport the original to the left, and the original is transported to the movable guide 2.
2, the document is guided to the document discharge path 27, and the document is discharged by a pair of discharge rollers 28 to the document discharge portion 14 formed on the upper surface of the platen cover 10. Then, when the document is conveyed by the pair of discharge rollers 28, the feed roller 13 is raised as shown in <g> in FIG.

Then, as shown in FIG. 14(h), when the document is discharged to the document discharge section 14, the platen sheet 12 is in a lowered state.

After this, the same operation as described above will be performed again.

Note that FIG. 15 is an illustration diagram showing the document feeding state. FIG. 16 is an illustration showing the state of the original document ejecting operation.

Further, FIG. 17 shows the document feeding state, the document ejecting state, and the ejecting state of the copied paper P.
It is an illustration diagram showing a document tray 2 and a document ejection section
, and the paper discharge tray 16 are located on the left side of the main body 1 of the apparatus, and the operator can set the document tray, take out the discharge document tray, and take out the copy paper P without moving his/her body.

When copying a folded original or a thin original that cannot be automatically fed, operate the operating lever 52 to move the platen sheet 12 to a position that covers the feed roller 13 as shown in FIGS. 1A and 8. You can press the entire document by pressing it. This prevents image defects due to lifting when using folded originals, and prevents image formation defects such as shadows of the edges of the platen sheet 12 and the feed roller 13 appearing on copies when using thin originals. I will do it.

Note that the present invention is not limited to the above embodiment.

For example, as shown in FIGS. 18 to 23, a document ejecting section 14' is located between an extending portion 2a of the manual document feed guide 2 that extends substantially parallel to the upper surface of the platen cover 10 and the platen cover 10. , and the document ejection section 1
A light emitting element 17a and a light receiving element 1 detecting the original document in step 4.
The document feeding device 4' may be configured to include a document detecting means 17 consisting of a document detecting means 7b.

In the case where the document ejection portion 14' is formed between the extending portion 2a of the manual document feed guide 2 and the platen cover 10, the upper surface side of the document ejection portion 14' becomes a closed pocket. Even if the platen or the bar 1O is opened and closed quickly, the original document housed in the original discharge section 14' will not fall, and the opening and closing operations of the platen cover 10 can be performed conveniently. Further, by providing the document detecting means 17, it is possible to prevent the document feeder 4' from being used erroneously when a thick document such as a book is placed in the document discharge section 14'. This has the advantage that jams can be prevented. In the description of this other embodiment, the same parts as in the above-mentioned embodiment are given the same reference numerals, and detailed explanation will be omitted.

In addition, although we have explained the case where it is applied to a document feeder (SDF) that handles manually fed document sheets, it may also be applied to a document feeder (ADF) that handles document sheets that are automatically fed to a predetermined position by a paper feeding means. good.

In addition, it goes without saying that the present invention can be modified in various ways without departing from the gist.

[Effects of the Invention] Since the present invention is configured as described above, the following effects are achieved.

In the image forming apparatus according to claim 1, although the image forming apparatus is a document feeding type document feeding device which has various features compared to a conveyor belt type, the document holding body can be moved to a position covering the document sending body. , you can press the entire document. This ensures that even in the case of folded or thin documents that cannot be fed automatically, image formation defects such as the document lifting up or the shadows of the edge of the document presser and the document feeder appearing on the copy will not occur. can be imaged.

According to the image forming apparatus according to claim 2, in addition to the above effects, the document presser can be moved to a position covering the document feeder by operating an operating lever provided on the outside of the document presser cover. Improves operability.

[Brief explanation of drawings]

FIGS. 1A to 17 show an embodiment of the present invention, and FIG. 1A is a schematic longitudinal sectional front view showing essential parts of the present invention;
FIG. 1B is a schematic perspective view showing the platen sheet sliding mechanism, FIG. 2 is a schematic perspective view showing the appearance of the upper part of the image forming apparatus with the platen cover of the document feeder partially closed, and FIG. 3 is a schematic perspective view showing the platen sheet sliding mechanism. FIG. 4 is a schematic perspective view showing the appearance of the upper part of the image forming apparatus with the platen cover of the document feeding device partially open; FIG. FIG. 5 is a schematic perspective view schematically showing the configuration of the document feeding mechanism section of the document feeding device, FIG. 6 is a perspective view illustrating the movable state of the platen sheet, and FIG. 7 shows the supported state of the platen cover. Figure 8 is a schematic longitudinal sectional front view showing the state in which the platen cover is closed and the feed roller is covered with the edge of the platen sheet, and Figure 9 is a schematic longitudinal sectional front view showing the state in which the platen cover is closed and the feed roller is covered with the edge of the platen sheet. 10 is a schematic perspective view of the platen sheet contact/separation mechanism, FIG. 11 is a diagram showing the positional relationship between the feed roller and the platen sheet during automatic document feeding, and FIG. 12 is a diagram showing the positional relationship between the feed roller and the platen sheet during automatic document feeding. FIG. 13 is an explanatory diagram showing the movement of the platen sheet toward and away from the platen glass. FIG.
Fig. 4 is an explanatory diagram of the operation of the document feeder, Fig. 15 is an illustration showing the document feeding state, Fig. 16 is an illustration showing the document ejecting operation state, and Fig. 17 is the document feeding state and the document ejecting operation. 18 to 23 are illustrations showing the state and discharge operation state of the copied paper P, and show other embodiments of the present invention, and FIG. 18 shows the configuration of the main part of the document feeder and its vicinity. FIG. 19 is a schematic perspective view showing the appearance of the upper part of the image forming apparatus with the platen cover of the document feeding device partially closed, and FIG. 20 is a schematic longitudinal sectional front view showing the platen cover of the document feeding device. A schematic perspective view showing the appearance of the upper part of the image forming apparatus in an open state, FIG. 21 is an illustration showing the document feeding state and the document ejecting operation state, and FIG. 22 shows the document in the pocket which is the document ejecting section A schematic perspective view showing a housed state;
FIG. 23 is also a schematic longitudinal sectional view. 3... Original mounting table (platen glass), 4.4'.
...Document feeder, 10...Document holding cover (platen cover), 12...Document holding body (platen sheet)
13... Document sending body (feeding roller), 49... Document presser support means (platen sheet sliding mechanism), 50
・・・Document presser attachment/separation means (platen sheet attachment/separation mechanism)
, 51... Link means, 52... Operation lever G...
・Gap, D... Manuscript. Applicant's representative Patent attorney Takehiko Suzue Figure 1 A Figure 2 Figure 1 B Figure 3 (a) (b) Figure (e) Figure 1

Claims (2)

[Claims] (1) An image forming apparatus equipped with a document feeder that automatically takes in a document that has been fed to a predetermined position, sets it on a document tray, and discharges it after forming an image, the document tray A document holding body that overlaps the document set thereon, and a document holding body provided so as to be able to move toward and away from the document placing table, and inserting the document fed to a predetermined position between the document holding body and the document placing table. , a document holding body contacting/separating means for displacing the document holding body to form a gap between a document sending body that discharges the document after image formation and a document placing table when the document feeding body takes out and takes out the document; 1. An image forming apparatus comprising: a document feeder having a support means for movably supporting a document presser to a covering position. (2) An image forming apparatus equipped with a document feeder that automatically takes in a document that has been fed to a predetermined position, sets it on a document tray, and ejects it after image formation, the document tray. A document holding cover is provided with a document holding body that overlaps the document set thereon, and the document holding cover is provided so as to be able to move toward and away from the document mounting table, and the document that has been fed to a predetermined position is held between the document holding body and the document placing table. a document feeder that is inserted between the document feeder and the document feeder to eject the document after image formation; and a document presser contact/separator that displaces the document presser to form a gap between the document tray and the document placement table when the document feeder takes out and takes out the document. , a link means for supporting the document presser so that it can move along the document presser cover; and a link means provided on the outside of the document presser cover, and the document presser is moved to a position covering the document feeder by operating the link means. An image forming apparatus comprising a document feeder having an operation lever for moving the body.