JPS62174782A - Image forming device - Google Patents

Abstract

PURPOSE:To easily take a normal copy and also copy an image on a screen by providing a main body with an automatic original feeding device and a screen part equipped with an original support member. CONSTITUTION:A window 64 is formed in the front surface of the screen part 61 on the automatic original feeding device 180 and the screen 65 is provided movably in it. Further, communication window parts 51 and 67 are provided to the top surface part of a paper feeding part 181 and the top surface part of the main body 1 positioned nearby an aligning roller 203, and light supplied from the screen part 61 through the window parts corresponding to the image on the screen 65 is guided into the main body 1. This incident light is reflected by a mirror 55 and passed nearby a mirror 9 to form an image on a photosensitive drum 10.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an image forming apparatus applied to, for example, an electronic copying machine.

[Technical Background of the Invention and Problems Therewith] Recently, the applicant of the present invention has developed an image forming apparatus in which a screen portion including a screen serving as a blackboard is provided on the main body of a copying machine. This image forming apparatus is capable of not only normal copying of a document placed on a document table, but also copying of an image formed on the screen using the copying machine main body.

However, since the screen section is provided on the main body of the copying machine, when performing normal copying, the screen section must be removed from the main body of the copying machine or moved to the rear of the main body. Furthermore, when making copies using the screen section, the screen section must be mounted on the main body of the copying machine or moved onto the main body. Therefore, switching the copying operation is time consuming.

[Object of the invention] This invention was made based on the above circumstances,
The objective is to provide an image forming apparatus that can easily perform normal copying and copying of images formed on a screen.

[Summary of the Invention] The present invention provides, for example, an automatic document feeder in the main body of a copying machine, and a screen portion equipped with a second document support member that allows writing of a document image directly on the copying machine itself, such as a blackboard. The screen unit is provided in the main body of the copying machine, and allows copying of the original image and copying of the image formed on the second original support member without moving the screen portion with respect to the main body of the copying machine.

[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIGS. 3 and 4 schematically show an image forming apparatus according to the present invention. In other words, 1 is the main body of the copying machine, and on the top surface of this main body 1 is a document table (transparent glass) that supports the document.
2 is fixed. The document table 2 is provided with a fixed scale 21 that serves as a reference for setting the document.
is equipped with a well-known automatic document feeder @180.

This automatic document feeder 180 has a paper feed section 1 that feeds documents.
81, and a conveyance section 182 that conveys the fed document toward the fixed scale 21 of the document table 2. The paper feed section 181 is provided with a work table 183 on which a document is placed. Further, the main body 1 is provided with a document receiving section 185 in which documents sent out from the document table 2 by the conveyance section 182 are accumulated.

Furthermore, the paper feed section 181 of the automatic document feeder 180 includes a document sensor 200 that detects the document placed on the work table 183, and a shutter 2 that temporarily holds the document.
01 is provided. When a document is detected by the document sensor 200, the shutter 201, a paper feed roller 184 that feeds the document according to the vertical movement of the shutter 201, and a pair of paper feed rollers that separate and feed the supplied document one by one. A separating roller 202 and an aligning roller 20 that aligns the separated documents and supplies them to the transport section 182.
3 is driven. Further, the conveying section 182 includes a conveying belt 204 that conveys the document fed from the paper feeding section 181.
is provided, and this conveyor belt 204 is connected to a drive pulley 205.
, and the driven pulley 206. Furthermore, this conveyor belt 204 is pressed against the document table 2 by a plurality of pressing rollers 207 . Then, the paper feeding section 181
The conveyor belt 204 is driven in synchronization with the operation, and the original supplied from the paper feed section 181 is set along the fixed scale 21. At this time, a sensor 209 detects whether or not the original has been set correctly. If the original is set correctly, the original is copied. That is, an optical system consisting of an exposure lamp 4 and mirrors 5, 6, and 7 moves back and forth along the lower surface of the document table 2 in the direction of arrow a, so that fog light is scanned during the reciprocation. In this case, mirror 6.7 is 1/2 of mirror 5 to maintain the optical path length.
move at a speed of The light reflected from the original by the scanning of the optical system, that is, the light reflected from the original by the light irradiation of the exposure lamp 4, is reflected by the mirror 5.6.7, passes through the variable magnification lens block 8, and is further described later. The light is reflected by a rotatably provided mirror 9 and guided to a photoreceptor drum 10, so that an image of the document is formed on the surface of the photoreceptor drum 10.

The photosensitive drum 10 rotates in the direction of arrow C in the figure, and the surface is first charged by the charging device 11, and then the image is exposed to slit light, thereby forming an electrostatic latent image on the surface. This electrostatic latent image is made visible by applying toner by the developing device 12.

On the other hand, the paper (material to be transferred) P is taken out one by one from the selected upper paper feed cassette 13 or lower paper feed cassette 14 by the delivery roller 15 or 16, passes through the paper guide path 17 or 18, and then passes through the registration roller pair. 19, and is sent to the transfer section by this pair of registration rollers 19. Here, the paper feed cassette 1
3.14 is removably provided at the lower right end of the copying machine main body 1, and either one can be selected on the operation panel described later. The cassette size of each of the paper feed cassettes 13 and 14 is detected by a cassette size detection switch 601 and 602, respectively. This cassette size detection switch 601.6
02 is turned on depending on the insertion of a cassette of a different size.
It consists of multiple microswitches that are turned off.

The paper P sent to the transfer section comes into close contact with the surface of the photoreceptor drum 10 at the transfer charger 20, so that the toner image on the photoreceptor drum 10 is transferred by the action of the band IN device 20. Ru. The transferred paper P is electrostatically peeled off from the photoreceptor drum 1o by the action of a peeling charger 21 and conveyed by a conveyor belt 22, and a pair of fixing rollers as a constant W device are provided at the end of the conveyor belt 22. 23, and the transferred image is fixed by passing there. The fixed IP is discharged to a tray 25 outside the copying machine main body 1 by a pair of paper discharge rollers 24. After the photosensitive drum 10 has been transferred, the charge is removed by the charger 26, residual toner on the surface is removed by the cleaner 27, and the residual image is erased by the charge removal lamp 28, so that the drum 10 returns to its initial state. It looks like this. Roughly speaking, when this copying operation is completed, the paper ejection roller pair 208 is operated, the conveyance belt 204 is driven again, and the original set on the original platen 2 is ejected to the original document receiving section 185. Note that 29 is a cooling fan for preventing a rise in temperature within the main body 1 of the copying machine, and 210 and 211 are sensors that detect jamming of a document.

On the other hand, a screen section 61 is provided on the automatic document feeder 180. A screen window 64 is formed on the front surface of the screen portion 61, and a screen 65, which is a second document support member, is provided inside the screen window 64 so as to be movable as shown by arrows bl and b2 in the figure.

Further, windows 51 and 67 are provided in communication with the upper surface of the paper feed section 181 and the upper surface of the main body 1 located near the aligning roller 203.
Light corresponding to the image formed on the screen 65 is supplied from the screen section 61 via the mirror 1.67 and guided into the interior of the copying machine main body 1. This window part 5
1.67, glasses 51a and 67a are provided, for example, so as to be orthogonal to the optical axis of the incident light.
a167a prevents dust etc. from entering the inside of the main body 1. The light guided into the main body 1 through these windows 51 and 67 is reflected by the mirror 55, passes near the rotated mirror 9 as shown by the dotted line, and is imaged on the photoreceptor drum 10. It has become.

FIG. 5 shows an operation panel 30 provided on the main body 1 of the copying machine. 301 is a copy key for commanding the start of copying; 302 is a numeric keypad for setting the number of copies, etc.; 303 is a display unit for displaying the operating status of each part, paper jam, etc.;
04 is a cassette selection key that selects the upper and lower paper feed cassettes 13 and 14, 30s is a cassette display section that displays the selected cassette, 30s is a magnification setting key that sets the copy enlargement and reduction magnification in a predetermined relationship, Reference numeral 307 denotes a zoom key for steplessly setting the enlargement/reduction magnification, 308 a display section for displaying the set magnification, and 30a a density setting section for setting the copy density.

A switch key 90 is provided at the left end of the operation panel 3o to switch between normal copying using the document table 2 and copying using the screen unit 61.
A display 902 for displaying the operating state of this switching key 901 is provided near the switch key 901 . Furthermore, 903 is a right movement key that moves the screen 65 to the right by an arbitrary length, and 904 is a left movement key that moves the screen 65 to the left by an arbitrary length.

FIG. 6 shows an example of the configuration of a drive source for each drive section of the copying machine main body 1 configured as described above, and is composed of the following motors. That is, 31 is a lens motor, which is a motor for moving the position of the lens block 8 for performing magnification change in the direction indicated by the arrow in the figure. 32 is a mirror motor for changing the magnification of the mirror 5.
This is a motor for changing the distance (optical path length) between the mirror 6.7 and the mirror 6.7. A scanning motor 33 is a motor for moving the exposure lamp 4, the mirror 5, and the mirror 6.7 for scanning the original. A shutter motor 34 is a motor for moving a shutter (not shown) for adjusting the charging width of the photosensitive drum 10 by the charging device 11 during zooming. A developing motor 35 is a motor for driving the developing roller of the developing device 12 and the like. A drum motor 36 is a motor for driving the photosensitive drum 10.

A fixing motor 37 is a motor for driving the paper transport path 22, the pair of fixing rollers 23, and the pair of paper discharge rollers 24. 38 is a paper feed motor, which is connected to the above-mentioned delivery row 515.
．． This is a motor for driving 16. A paper feeding motor 39 is a motor for driving the registration roller pair 19.

A fan motor 40 is a motor for driving the cooling fan 29.

FIG. 7 shows a drive mechanism for reciprocating the optical system. That is, the mirror 5 and the exposure lamp 4 are supported by a first carriage 411, and the mirror 6.7 is supported by a second carriage 412, and these carriages 411, 412 are guided by guide rails 421, 422 in the direction of arrow a. It can be moved in parallel. That is, the four-phase pulse motor 33 for scanning drives the pulley 43. An endless belt 45 is stretched between the pulley 43 and the idle pulley 44, and one end of the first carriage 41 plate that supports the mirror 5 is fixed to a midway portion of the belt 45. On the other hand, the guide portion 46 of the second carriage 412 that supports the mirror 6.7 has an axial direction of the rail 422! Two pulleys 47.47 are rotatably provided with a distance between them, and a wire 48 is stretched between these pulleys 47.47. One end of this wire 48 is fixed to a fixed part 49, and the other end is fixed to the fixed part 49 via a coil spring 50. In addition, the wire 4
One end of a first carriage 411 is fixed to the middle part of 8. Therefore, as the pulse motor 33 rotates, the belt 45 rotates, the first carriage 411 moves, and the second carriage 412 also moves accordingly. At this time, since the pulleys 47 and 47 serve as movable pulleys, the second carriage 41
2 move in the same direction at 1/2 the speed. Furthermore, first,
The direction of movement of the second carriages 411 and 412 is controlled by switching the direction of rotation of the pulse motor 33.

Further, the first carriage 411 is moved to a predetermined position (home position according to the magnification) by driving the motor 33 according to the paper size and magnification. Then, when the copy key 301 is pressed, the first carriage 411 first transfers to the second carriage 412.
After that, the lamp 4 is turned on and the second carriage 412 is moved away from the second carriage 412 . When scanning of the original is completed, the lamp 4 is turned off and the first carriage 4
1+ is returned to the home position.

Further, a rotating wheel of, for example, a rotary solenoid 68 is attached to the base end of the mirror 9, and the mirror 9 is rotated by the rotary solenoid 68.

FIG. 8 shows the overall control circuit, which is mainly composed of a main processor group 71 and first and second sub-processor groups 72 and 73. The main processor group 71 is
A high-voltage transformer 76 that detects inputs from the operation panel 30 and input devices 75 such as various switches and sensors, such as the cassette size detection switches 60r and 602, and drives the various chargers, the static elimination lamp 28, and the cleaner 27. The blade solenoid 27a, the heater 23a1 of the pair of fixing rollers 23, the exposure lamp 4, each of the motors 31 to 40, etc. are controlled to perform the above-described copying operation.

Among the above motors 31 to 40, motor 35.37.40
and a toner motor 7 that supplies toner to the developing device 12.
7 is connected to the main processor group 7 via a motor driver 78.
1, the motors 31 to 34 are controlled by a first sub-processor group 72 via a pulse motor driver 79,
The motors 36, 38, and 3 are controlled by a second sub-processor 73 via a pulse motor driver 80.

Further, the exposure lamp 4 is controlled by the main processor group 71 via the lamp regulator 81, and the heater 23a is controlled by the main processor group 71 via the P911111 section 82.
controlled by Then, commands to drive and stop each motor are sent from the main processor group 71 to the first and second sub-processor groups 72 and 73.
2.73 sends a status signal to the main processor group 71 indicating the drive/stop state of each motor. Also,
The first sub-processor group 72 receives position information from a position sensor 83 that detects the initial positions of the motors 31 to 34.

The main processor group 71 also includes a pulse motor driver 69 that controls the pulse motor 85 that moves the screen 65, a lamp regulator 70 that controls the exposure lamp 66 that irradiates the screen 65, and the mirror 9. Rotary solenoid 68 to drive
is connected. These pulse motor driver 69, lamp regulator 70, and rotary solenoid 68 are controlled by the main processor 71 in response to signal detection from the switching key 901 and movement keys 903 and 904. .

Further, a sub-processor group 52 is connected to the main processor group 71, and this sub-processor group 52 has the following functions:
Each row 5184.202 of the automatic document feeder 180
．． 203.208, a pulse motor 58 that drives the Oyohi shutter 201 and moves the conveyor belt 204;
A pulse motor driver 53 is connected to control the motors 1 to 58n. And this pulse motor driver 53
is controlled by the main processor 71 in response to signal detection from the sensor g\54 such as the document sensor 200.

FIG. 9 shows an example of the configuration of the main processor group 71. That is, 91 is a one-chip microcomputer (hereinafter simply referred to as microcomputer), which detects human power on the keys on the operation panel 30 and controls various displays via an input/output board 92. In addition, the microcomputer 91
It is expanded by input/output ports 93-96. A high voltage transformer 76, a motor driver 78, a lamp regulator 81, and other outputs are connected to the input/output boat 93. A size switch for detecting paper size and other human power are connected to the input/output boat 94. 95 has copy line 1'! -gQ constant switch and other human power etc. are connected. For example, the switching key 901 and movement keys 903 and 904 provided on the operation panel 30 via the input/output boat 96 detect human power, and the motor 85, rotary solenoid 68, display 902, etc. corresponding to the human power of the key are detected. control is now in place.

FIG. 10 shows an example of the configuration of the first sub-processor group 72. That is, 101 is a microcomputer, which is connected to the main processor group 71. 102 is a programmable interval timer for controlling the phase switching interval time of the pulse motor, and by setting a setting value from the microcomputer 101, it counts based on the setting value,
When the count is out, a termination pulse is output to the interrupt line of the microcomputer 101. A reference clock pulse is input to the timer 102. Also, microcomputer 101
, to which position information from a position sensor 83 is input, and input/output boats 103 and 104 are connected.

The input/output boat 104 is connected to the motors 31 to 34 via the pulse motor driver 79. The input/output board 103 is used, for example, to output status signals of each pulse motor to the main processor group 71.

FIG. 11 shows the configuration of the second sub-processor group 73. That is, 111 is a microcomputer, which is connected to the main processor group 71. Numeral 112 is a programmable interval timer for controlling the phase switching interval time of the pulse motor, and when a set value is set by the microcomputer 111, it counts based on the set value, and outputs an end pulse when the count is out. This termination pulse is latched by the latch circuit 113, and its output is supplied to the interrupt line and input/output board input line of the microcomputer 111. In addition, the microcomputer 111 also has an input/output board 1.
14 is connected to this input/output boat 114, and motors 36 and 38 are connected to it via the pulse motor driver 80.
．． 39 are connected.

Figure 12 shows the control circuit of the pulse motor, and shows the input/output boat 121 (input/output boat 1 in Figures 10 and 11).
04.114) has a pulse motor driver 122
A pulse motor 123 (corresponding to the pulse motor drivers 79, 80 in FIG.
．． 39) are connected to each other.

Figure 13 shows the speed control method of a pulse motor.
Figure (a) is the speed curve of the pulse motor, and the figure <b
> indicates the phase switching interval. As is clear from this figure, the phase switching interval is initially long, gradually shortens, eventually becomes equal, becomes gradually longer again, and then stops. That is, this indicates the through-up and through-down of the pulse motor, which initially rises from the self-starting vJ region, is used in the high speed region, and then falls. In addition, tl, t
2...tx indicates the time of the phase switching interval.

Next, the screen portion 61 will be further explained.

FIGS. 14 and 15 schematically explain the configuration of the screen section 61. FIG. A screen window 64 is formed on the front surface of the screen portion 61, and an endless screen 65 is provided inside the screen window 64 so as to be movable as shown by an arrow b1b2. That is, the screen 65 is hooked up to rollers 86 and 87, respectively. A gear 871 is provided on the roller 87, and a gear 851 rotated by a motor 85 is meshed with the gear 871. Therefore, the screen 65 is
Copy key 301 and right movement key 90 on the operation panel 30
3 or left movement key 904, the motor 8
5 is driven by switching the rotational direction, the illustrated arrow b! , b2 direction.

Further, an exposure lamp 66 and a mirror 97 are provided near the roller 86, and a mirror 97 is provided near the roller 87.
8.99 and a lens 74 are provided. The exposure lamp 66 and mirror 97 are as shown in FIG.
It is provided along the width direction of the screen 65.

Light generated from the exposure lamp 66 is irradiated onto the surface of the screen 65 wound around the roller 86. The reflected light from the screen 65 is reflected by the mirror 97 and guided to the mirror 98. The reflected light guided by the mirror 98 is reflected by the mirror 99 and guided to the lens 74.

The reflected light guided to this lens 74 is reduced to a size corresponding to the transfer paper P, and the reflected light is reduced to a size corresponding to the transfer paper P.
The glass 5 provided in the window section 51.67 of the supply section 181 of
It is led into the interior of the copying machine main body 1 via 1a and 67a.

Next, a copying operation using the screen section will be explained with reference to FIGS. 1 and 2.

In this copying machine main body 1, in a state where NH is supplied,
Under the control of the main processor group 71, for example, normal copying operations are enabled.

In this state, when the switching key 901 of the operation panel 30 is operated, the main processor group 71 causes the display 9
02 is turned on, and the copying machine main body 1 is enabled to copy the image on the screen section 61. At this time, the mirror 9 is rotated by the rotary solenoid 68 out of the optical path of the light incident from the window 67 (indicated by a solid line in the figure), and various keys 301 on the operation panel 30 for setting the copying conditions, etc. ~30s is operated for copying the screen image. Therefore, for example, when the numeric keypad 302 is operated, the number of copies of the image on the screen section 61 is set.

In this state, the copy key 30 of the operation panel 30
1 is operated, under the control of the main processor group 71, the motors 31 to 34 and the lamp regulator 81 of the copying machine main body 1 are stopped, and the variable power lens block 8, the mirror 5, 6, 7, and the exposure The operation of the optical system such as the lamp 4 is stopped. At the same time, the photosensitive drum 10, the developing device 12, the charging device 11, etc. are operated. At the same time, the lamp regulator 70 causes the exposure lamp 66 of the screen section 61 to emit light, and the six pulse motor drivers drive the pulse motor 85 that moves the screen 65. At this time, the pulse motor 85 moves the screen 65 in the direction of the arrow b1 in synchronization with the rotation of the photosensitive drum 10.

Thereby, the image formed on the screen 65 is exposed and scanned by the exposure lamp 66 when the screen 65 is moved.

The reflected light from this screen 65 is shown in FIGS.
As shown in the figure, the light is reflected by mirrors 97, 98, and 99, passes through a lens 74, and is led into the interior of the copying machine main body 1 through a window 51, 67. The reflected light guided into the interior of the main body 1 is reflected by the mirror 55, and is reflected by the photoreceptor drum 1.
The image is formed on the surface of 0. As described above, the image formed on the photosensitive drum 10 is transferred to the paper P and placed on the tray 25.
is discharged. In this way, the image drawn on the screen 65 is formed on the paper P.

On the other hand, in the above state, when the switching key 901 is operated again, the display 902 is turned off under the control of the main processor group 71. Further, the various keys 301 to 309 on the operation panel 30 are switched to copy the original image, the mirror 9 is rotated by the rotary solenoid 68 to the position shown by the dotted line in the figure, and the copying machine main body 1 is operated to copy the original image. Images can be copied.

According to the above embodiment, the screen portion 61 is attached to the copy W main body 1.
Since the image on the screen section 61 can be copied using the copying machine main body 1, it is extremely convenient for use in meetings and the like.

Furthermore, since the screen section 61 is provided in the main body 1 with the automatic document feeder M180 interposed therebetween, the document image can be copied without moving the screen section 61. Therefore, it is possible to save the effort of moving or removing the screen section 61 in accordance with the copying operation, and since no space is required to store the moved screen section 61, the installation area can be reduced.

Furthermore, since the copying machine main body 1 is almost the same as a normal copying machine, manufacturing costs and copying costs are low, and the copied images are also good.

Further, since the screen 65 is moved according to the operation of the photosensitive drum 10, the copying speed is fast.

In the above embodiment, the endless screen 65 is used, but the invention is not limited to this, and the winding may be performed using left and right openings 86 and 87, for example.

Further, in the above embodiment, a rotary solenoid is used to rotate the mirror 9, but the present invention is not limited to this, and a pulse motor or the like may be used, for example.

Furthermore, the mirror 9 may be rotated by a detection signal from the sensor 209. For example, when the sensor 209 detects that a document supplied to the paper feed section 181 of the automatic document feeder 180 has been conveyed by the conveyance section 182 and set on the document table 2, the mirror 9 It may also be rotated onto the optical path of the light being transmitted.

Further, the automatic document feeder 180 may be set to open and close when a document jam is detected.

It goes without saying that various other modifications can be made without departing from the gist of the invention.

[Effects of the Invention] As detailed above, according to the present invention, ordinary copying,
Furthermore, it is possible to provide an image forming apparatus that can easily copy an image formed on a screen.

[Brief explanation of drawings]

The drawings show an embodiment of the image forming apparatus according to the present invention, and FIG. 1 is a side cross-sectional view shown to explain the copying operation of the image forming apparatus, and FIG. 2 is a side view of FIG. 1. 3 is an external perspective view of the image forming apparatus, FIG. 4 is a side sectional view for explaining the copying operation of an original image, and FIG. 5 is a sectional view.
Figure 6 is a perspective view showing the configuration of the operation panel, Figure 6 is a perspective view showing the configuration of the drive section, Figure 7 is a perspective view schematically showing the drive mechanism of the optical system, and Figure 8 is the overall control circuit. The ninth factor is a block diagram showing the main processor group, FIG. 10 is a block diagram showing the first sub-processor group, and FIG. 11 is the second sub-processor group.
FIG. 12 is a schematic diagram showing the configuration of the sub-processor group, FIG. 12 is a schematic diagram showing the control circuit of the pulse motor, FIG. 13 is a diagram for explaining the speed control method of the pulse motor, and FIG. 14 is a schematic diagram of the configuration of the screen section. Fig. 15 is a perspective view shown in Fig. 1.
4 is a top view showing FIG. 4 from above, and FIG. 16 is an exploded perspective view of FIG. 14. DESCRIPTION OF SYMBOLS 1... Copying machine main body, 2... Document table, 9... Mirror, 10... Photosensitive drum, 51.67... Window part, 6
1...Screen section, 65...Screen, 66.
...Exposure lamp, 68...Rotary solenoid, 7
1... Main processor group, 74... Lens, 85
...Pulse motor, 86.87...Roller, 901
...Switching key, 55.97.98.99...Mirror, 180...Automatic document feeder, 181...Paper feed section, 182...Transportation section, P...Paper. Applicant's representative Patent attorney Takehiko Suzue Figure 2 Figure 11 Figure 12 Figure 14 61 Q Figure 15 Figure 16

Claims (5)

[Claims] (1) A first scanning device that optically scans an image of a document placed on a first document support member, and a light image reflected from the document scanned by the first scanning device, which is charged in advance It consists of a first optical means that guides the applied image to the image carrier, a developing means that develops the charge pattern formed on the image carrier, and a transfer means that transfers the developed image to the transfer material. In the image forming apparatus, an automatic document feeding means for feeding a document to the first document supporting member, and a second automatic document feeding means provided on the automatic document feeding means and capable of directly forming a document image on itself.
a second document support member, a second scanning means that moves relative to the second document support member and optically scans an image formed on the second document support member; 1. An image forming apparatus comprising: a screen section comprising a second optical means for guiding a reflected light image from a second document supporting member scanned by a scanning means to the image carrier; (2) The image forming apparatus according to claim 1, wherein the automatic document feeding means has a window portion that guides the reflected light image guided by the second optical means to the image carrier. . (3) The first optical means includes a rotatable mirror that switches between the reflected light image by the first scanning means and the reflected light image guided by the second optical means. An image forming apparatus according to claim 1. (4) The image forming apparatus according to claim 1, wherein the screen section includes a drive means for moving the second document support member in synchronization with rotation of the image carrier. (5) The image forming apparatus according to claim 1, wherein the screen portion is provided with a second document support member substantially perpendicular to the first document support member.