JPH0286542A - Paper exhausting device for copy machine - Google Patents

Abstract

PURPOSE:To prevent a paper exhaust tray from obstructing the way in the exchange of a paper feed cassette and the use of a manually inserting tray by providing a control means for selecting a first set position as the position of the paper exhaust tray when a copy machine is not in the copying motion state and regularly stopping the paper exhaust tray in the first set position when the copying motion is not conducted. CONSTITUTION:When a copy machine is not in the copy motion state, a paper exhaust tray 50 is situated in a first set position in which the projected area of a flat surface protruded from the copy machine body side is reduced, namely, a position nearly parallel to the copy machine body side face. When the copy machine is in the copy motion state, the position of the paper exhaust tray 50 is displaced to a second set position in which the projected area of the flat surface protruded from the copy machine body side is extended, namely the nearly horizontal position, by driving a motor, and a transfer sheet is received by this paper exhaust tray 50. After the completion of the copy motion, the paper exhaust tray 50 is returned to the normal first set position.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a paper discharge device for a copying machine, for example, a paper discharge device for a copying machine in which a paper discharge tray and a paper feed cassette are located on the same side. It is related to.

[Prior Art] As a conventional paper ejecting device for this type of copying machine,
The technology published in 100243@publication can be mentioned.

The paper ejection device of the copying machine of the above technology includes a copying machine main body equipped with a paper ejection port from which copied copies are ejected, and a copying machine provided at the paper ejection port of the copying machine main body to accumulate the copy sheets. In the copying machine equipped with a paper discharge tray, the paper discharge tray is pivotally supported on the main body of the copying machine via a toggle mechanism so that it can be rotated as required.

Therefore, due to the structure described above, if the paper ejection tray gets in the way when installing the paper cassette into the copying machine main body, the paper ejection tray can be removed using the toggle mechanism installed between the paper ejection tray and the copying machine main body. It can be rotated through the section and moved to a side position of the copying machine main body.

[Problems to be Solved by the Invention] Since the paper ejection device of a conventional copying machine is configured as described above, if the paper ejection tray becomes an obstacle when installing the paper feed cassette in the copying machine main body, In this case, it was necessary to manually move it to the side of the copying machine. In addition, especially when a manual feed tray is installed on the top of the paper cassette,
The paper ejection tray was in the way, and the manual feed tray on the top of the paper feed cassette located at the lower stage of the paper ejection tray was not convenient to use.

For this reason, when the paper feed cassette is disposed below the paper discharge tray, the manual feed tray cannot be formed on the upper surface of the paper feed cassette, and the degree of freedom in cutting is restricted accordingly.

SUMMARY OF THE INVENTION An object of the present invention is to provide a paper ejecting device for a copying machine that does not get in the way when replacing a paper feed cassette or using a manual feed tray.

[Means for Solving the Problems] A paper discharge device for a copying machine according to the present invention sets the paper discharge tray to a first setting position in which the projected area of a plane protruding from the copying machine body is reduced when the copying machine is not in a copying operation state. , only in the copying operation state, the copying is performed at the second set position in which the projected area of the plane protruding from the main body is increased.

According to a second aspect of the present invention, the position of the paper discharge tray is moved to the first setting position when the power is turned on.

Further, in a third aspect of the present invention, the stop position of the paper discharge tray is set to the first setting position as the home position.

[Function 1] In this invention, when the copying machine is not in the copying operation state, the paper ejection tray is set at the first setting position where the projected area of the plane protruding from the copying machine main body side is small, and when the copying machine is in the copying operation state, Only the paper output tray is set at a second setting position in which the projected area of the plane protruding from the copying machine main body side is increased;
When the copying operation of the copying machine is completed, the copying machine is returned to the first setting position in the normal state.

According to a second aspect of the present invention, the position of the paper discharge tray is moved to the first setting position when the power is turned on without any key input.

According to a third aspect of the present invention, the first set position is the home position for the stop position of the paper discharge tray, and the first set position is used as the stop position except in the copying operation state.

[Example code] The present invention will be explained in detail below.

FIG. 2 is an overall configuration diagram of a copying machine including a copying machine main body and its paper ejecting device according to an embodiment of the present invention.

In the figure, an original placed on an original glass 1 is exposed to a CCD line sensor 4 by an exposure lamp 2 and a lens array 3, and is colored in three primary colors: R (red), G (green), and B (blue). Read as a signal. This R,
The G and B color signals are converted by the image processing circuit into Y (yellow), M (magenta), C (cyan), or three or four types of signals including these plus BK (black). , is transmitted to the laser optical system 6 as an output signal. Note that the copying machine of this embodiment does not have an image memory for three colors, and the image reader unit 5 scans each time when forming an image for each color, and based on this, sequentially Y, MSC
Alternatively, Y, M, C, and BK signals are transmitted to the laser optical system 6.

The laser optical system 6 includes a scanning polygon mirror 7, a θ lens 8, a reflection mirror 9, etc., and emits image-forming laser beams for each color based on the Y1M, C or Y, M, C, BK signals. Exposure is performed by irradiating the light toward the photosensitive drum 10.

The photosensitive drum 10 is rotationally driven in the direction of the arrow shown. The surface portion of the photosensitive drum 10 is provided with an organic photoreceptor laminated on a conductive substrate, and in particular, an organic photoreceptor is used that exhibits high sensitivity at a laser emission wavelength of around 780 nm.

A drum cleaner 12, a toner collection roll 13, a billet 9 lamp 14, and a charger 11 are arranged around the photosensitive drum 10. In this embodiment, the organic photoreceptor is negatively charged by the charger 11. There is. Furthermore, four types of developing devices are arranged around the photosensitive drum 10.
The first developer 15 supplies yellow toner, the second developer 16 supplies magenta toner, the third developer 17 supplies cyan toner 1 to toner, and the fourth developer 18 supplies black toner. 1
- toner, and these toners are negatively charged. In addition, in the 1-toner replenishment, the toner of each color stocked in the toner hopper 19 is transferred to each of the first developing device 15, second developing device 16, third developing device 17, and fourth developing device based on the replenishment signal. This is done by transferring the image to the developing unit 18 of the image forming apparatus via a pipe (not shown).

For transfer sheets 1~ of plain paper or OHP film, etc., use the lower paper feed force Cera! -20a and upper paper feed force cellars 1 to 20b
The paper feed rollers 21a on the lower stage are stored in a stacked state.
Alternatively, the conveyance roller 2 is
2 and a guide plate 23, the sheets are fed one by one toward the transfer drum 30. Note that the upper paper feed cassette 2
Reference numeral 0b designates a so-called universal paper feed tray on which a manual feed guide 20G constituting a manual feed tray is disposed.

Then, when the leading edge of the transfer sheet comes into contact with the registration roller 24, the transfer sheet is temporarily stopped and the subsequent timing is determined, and skew correction is performed at the same time.

The paper sensor 25 is used for this purpose.

The transfer drum 30 is driven to rotate in the direction of the arrow, and, as is well known, is composed of an aluminum drum frame and a dielectric screen stretched in a cylindrical shape and supported by the drum frame.

A plurality of tip chucking claws 31 are provided around the transfer drum 30. This tip chucking claw '31 is for chucking the tip of the transfer sheet that is timed and fed by the registration roller 24. That is, the tip chucking claw 31 opens when it rides on a not-illustrated guide rail disposed inside the transfer drum 30. The leading end of the transfer sheet fed from the registration roller 24 and guided by the transfer sheet guide 26 is placed between the leading end chucking claw 31 in the open state and the separation pressing claw (not shown) in the closed state. inserted. Then, as the transfer drum 300 rotates, when the leading edge chucking claw 31 passes the guide rail, the leading edge chucking claw 31 closes and chucks the leading edge of the transfer sheet.

On the other hand, when separating the transfer sheet from the transfer drum 30, the leading end of the transfer sheet is pushed up in conjunction with the opening movement of the leading end chucking claw 31.

As a result, the leading end of the transfer sheet is unchucked by the opening action of the leading end chucking claw 31, and then is actively separated from the surface of the transfer drum 30 by the pushing up action of the separation pressing claw.

As shown in the figure, a frame 32 supporting the transfer drum 30 is rotatably supported by the main body around a rotating shaft 33.
It is biased clockwise by a spring 34. As a result, the transfer drum 30 is brought into pressure contact with the positioning roller 35 disposed on the photosensitive drum 10 side, and the distance between the photosensitive drum 10 and the transfer drum 30 is kept constant.

On the inner peripheral side of the transfer drum 30, as shown in the figure, an adsorption charger 36, a transfer charger 37, and a first static elimination charger 38 are arranged. Further, a ground electrode 4 is provided on the outer peripheral side of the transfer drum 30, facing the adsorption charger 36.
1, a second static elimination charger 42 is disposed opposite to the first static elimination charger 38, respectively. A separation claw 44 is provided in the transfer sheet transfer direction of the second static elimination charger 42 . Further, the position detection sensor 39 is connected to the transfer drum 3.
This is to detect the rotational position of 0.

The adsorption charger 36 performs a negatively charged corona discharge to negatively charge the dielectric screen of the transfer drum 30,
The tip is attached to the transfer drum 3 by the tip chucking claw 31.
The transfer sheet, which is sent while being chucked at zero, is electrostatically attracted to the dielectric screen. At this time, the ground electrode 41 ensures electrostatic attraction of the transfer sheet onto the transfer drum 30.

The transfer charger 37 is disposed at a transfer portion where the photosensitive drum 10 and the transfer drum 30 are closest to each other, and electrostatically transfers the toner image on the photosensitive drum 10 to a transfer sheet on the transfer drum 30 by positively charged corona discharge. It is something.

The first static elimination charger 38 and the second static elimination charger 4
2 both use AC power to remove static electricity; these 1
The set constitutes a static elimination charger.

The first static elimination charger 3B mainly eliminates static electricity from the dielectric screen and reduces the electrostatic attraction force of the transfer sheet. The second static elimination charger 42 mainly eliminates static electricity from the surface of the transfer sheet during separation, and also prevents discharge accompanying separation, thereby preventing the drawn toner image from scattering.

The transfer sheet separated from the transfer drum 30 by the separation claw 44 is sent to the fixing device 46 by sheet delivery means such as a conveyor 45, where it is thermally fixed and then ejected to the paper ejection tray 50 side.

Next, a mechanism on the paper ejection tray side, which is a part of the main part of the embodiment of the present invention, will be explained.

FIG. 1 is a perspective view showing the mechanical structure of a part of a paper discharge device of a copying machine according to an embodiment of the present invention. 3 is an explanatory diagram of the first setting position for explaining the operation of the mechanical structure of the paper ejecting device of the copying machine of the embodiment shown in FIG. 1, and FIG. 4 is an explanatory diagram of the second setting position. It is an explanatory diagram.

In the figure, the paper ejection tray 50 is fixed to a rotating shaft 51, and a driven gear 52 is disposed at the end of the rotating shaft 51.
The first setting position has a smaller projected area of the plane protruding from the copying machine main body side, and the second setting position has a larger projected area of the plane protruding from the copying machine main body side. It will be done. That is, the first setting position in which the projected area of the plane protruding from the copying machine main body side is reduced is a position where the paper discharge tray 50 is rotated about the rotation shaft 51 and is substantially parallel to the side surface of the copying machine main body. and manual feed tray 20G
This is so that it does not get in the way when feeding the transfer sheet. In addition, the second setting position in which the projected area of the plane protruding from the copying machine body side is increased is the paper output tray 5.
0 to the position where the transfer sheet is ejected by rotating the rotation shaft 51.

A driven gear 52 that rotates the rotation shaft 51 receives rotational force from a drive gear 53 attached to the output shaft of a tray setting motor 55. Note that the driven gear 52 and the driving gear 5
3 constitutes a reduction gear 54. Therefore, the paper discharge tray 50 can be stopped at the first setting position or the second setting position via the reduction gear 54 by the rotation of the tray setting motor 55.

The rotation of the paper discharge tray 50 to the first set position or the second set position is detected by a retracted position sensor 56 and a fixed position sensor 57 provided on the tray holding plate 58. The retraction position sensor 56 is composed of a microswitch, and only when it is in the first set position, the microswitch is pressed at the end of the paper discharge tray 50 to generate an on signal. Further, the fixed position sensor 57 is also composed of a microswitch, and only when it is in the second set position, the microswitch is pressed at the end of the paper discharge 1 to the tray 50 to generate an on signal.

The tray setting motor 55, the reduction gear 54, and the rotating shaft 51 constitute driving means for displacing the paper discharge tray 50 to the first setting position and the second setting position.

A fulcrum shaft 60 is disposed above the paper discharge tray 50 in parallel to the rotation shaft 51 . A holding member 61 bent into an oval shape is disposed approximately at the center of the fulcrum shaft 60. A contact sensor 62 is disposed at the bent portion of the holding member 61. Further, a driven gear 63 is disposed at the end of the fulcrum shaft 60, and the driven gear 63 is rotated by a drive gear 64 disposed on the output shaft of a paper holding motor 66. Note that the driven gear 63 and the driving gear 64
constitutes a reduction gear 65. That is, the holding member 61 disposed approximately at the center of the fulcrum shaft 60 presses the transfer sheet ejected onto the sheet discharge sheet 50 with the contact sensor 62 at the bent portion of the holding member 61, and the sheet is discharged. The transfer sheet is held between the contact sensor 62 at the bent portion of the tray 50 and the holding member 61, and while the transfer sheet is placed on the paper ejection tray 50, the paper ejection tray 5 is
This is to retract from the second setting position to the first setting position without slipping from the zero position.

At this time, the paper holding motor 66, the reduction gear 65, the fulcrum shaft 60, the holding member 61 disposed approximately in the center thereof, and the contact sensor 62 serve as holding means in this embodiment for holding the transfer sheet on the paper discharge tray 50. constitutes a holding mechanism.

The paper holding mechanism detector 67 uses a contact sensor 62 on the bent portion of the holding member 61 to determine whether a mechanism is provided to press and hold the transfer sheet discharged onto the paper discharge tray 50. Tray retainer plate 58 at a location near axis 60
A paper holding mechanism detector 67 consisting of a reed switch and a pair of permanent magnets is disposed at the fulcrum shaft 60, and when the magnetic path is short-circuited by the fulcrum shaft 60, the reed switch is turned on and the transfer sheet is suppressed and held in the copying machine body. This is a device that determines whether the

Further, the paper ejection detection sensor 68 detects the presence or absence of a transfer sheet ejected to the paper ejection tray 50, and is composed of a pair of a light emitting element and a light receiving element, and the light generated from the light emitting element is reflected by the transfer sheet. The presence of the transfer sheet is determined by the presence of the transfer sheet.

The mechanical operation of the paper ejecting device of the copying machine of this embodiment configured as described above is as follows.

The position of the paper discharge tray 50 shown in FIG. 3 shows the stopped state at the first setting position.

In the normal initial setting state, that is, the home position, the paper output tray 50 is rotated by the tray setting motor 55.
It is stopped at the first setting position via the reduction gear 54.

At this time, the paper ejection tray 50 is arranged approximately parallel to the side surface of the copying machine main body, and the manual feed guide 20c arranged on the upper surface of the upper paper feed cassette 20b has the paper ejection 1 tray 50 positioned on its upper surface. It is possible to use it freely without any restrictions on its use.

In this state, the evacuation position sensor +j56 has been generating an on signal since the paper discharge tray 50 was rotated to the first setting position. Further, the holding member 61 disposed approximately at the center of the fulcrum shaft 60 is at a home position rotated to the left.

Then, the tray setting motor 55 rotates, and the rotation shaft 5
1 rotates and is attached to a rotating shaft 51.
When the position sensor 57 reaches the second set position, the fixed position sensor 57 generates an on signal. The position of the paper discharge tray 50 shown in FIG. 4 shows the stopped state at the second setting position at this time.

At this time, the paper ejection tray 50 is in a position to place the transfer sheet that has been thermally fixed by the fixing device 46 and is ejected. Therefore, a normal copied transfer sheet is discharged to the paper discharge tray 50 after being fixed.

In addition, when the sheets are ejected onto the ejection trays 1 to 50 and the transfer sheets 1 to 1 are still placed on the ejection tray 50, the ejection tray
To return to the home position, first, the paper holding motor 66 is rotated, the fulcrum shaft 60 is rotated via the reduction gear 63, and the holding member 61 is rotated to the right. When the contact sensor 62 suppresses the transfer sheet discharged onto the paper discharge tray 50 and detects that the transfer sheet is pressed with a predetermined pressure, the paper holding motor 66 is activated in this state.
stop. Then, while pressing the transfer sheet with this predetermined pressure, the tray setting motor 55 is rotated in the opposite direction to the direction in which it is moved to the second setting position, the rotation shaft 51 is rotated, and the paper discharge tray 50 is rotated. to the first setting position. When the paper discharge tray 50 reaches the first set position, the evacuation position sensor +156 generates an on signal. Then, the paper discharge tray 50 is at the stop position shown in FIG.

Then, while the contact sensor 62 presses the transfer sheet discharged onto the paper discharge tray 50, it can be moved to the second setting position again.

FIG. 5 is an enlarged plan view of the operation panel on the top surface of the copying machine main body shown in FIG. 2.

The print start key 70 is used to start copying.
The numeric keys 71 to 80 are necessary for setting the number of copies and the magnification, and the interrupt key 81 is used to interrupt copying of another number of copies while a predetermined number of copies is being copied. The clear/stop key 82 is used to clear the data displayed on the glyph display section 83, that is, the data input by operating the numeric keys 71-80.

In addition, the paper select 1 key 85 can be operated to select the lower paper feed force cell I 208 or the upper paper feed cassette 20.
Select the paper type b. A3→A4 reduction magnification selection key 86, A3→B4 reduction magnification selection key 87
, A4→A3 magnification display 88, B4→A3 magnification select 1 to keys 89, and equal magnification select 1 to keys 90 are for setting variable magnification.

The all clear key 91 is used to cancel the currently set data to the initial setting state, and the manual tray movement key 92 is used to move the position of the paper discharge tray 50 to the second set position.

Next, FIG. 6 shows a circuit diagram of a control means used in a paper discharge device of a copying machine according to an embodiment of the present invention.

In the figure, a microcomputer 100 having a RAM 110 which is an extended memory performs various controls for copying in the main body of the copying machine, and also controls paper discharges 1 to 50 in this embodiment.
This serves as a control means for controlling the position of the A tray setting motor 55 is connected to the output of the microcomputer 100 via a driver 121 and an overcurrent detection circuit 122.
is connected. Further, the overcurrent detection circuit 122 is configured such that when the overcurrent detection circuit 122 detects an abnormal current, the signal is inputted to the microcomputer 100.
The detection output of No. 2 is connected to the input of the microcomputer 100. Further, the micro combi coater 100
A transfer sheet holding motor 66 is connected to the output of the transfer sheet holding motor 66 via a driver (not shown). Note that the transfer sheet holding motor 66 is also similar to the tray setting motor 5.
It is also possible to use the same circuit configuration as 5.

The microcomputer 100 includes a retreat position sensor 56, a fixed position sensor 57, a contact sensor 62, a paper holding mechanism detector 67, and a paper holding mechanism detector 67 set in the key human power matrix circuit 102.
Contact points such as a power switch 93 are inputted via a diode, and the output of the paper discharge detection sensor 68 is connected to an analog input port of the microcomputer 100.

Further, the microcomputer 100 is connected to a key manual matrix circuit 102 controlled via a decoder 101, a display on a glyph display section 83, and an LED display group 103 for displaying various setting modes and the like. The input/output of the microcomputer 100 includes, via a driver (not shown), various motors that function as a known copying machine, a timing roller clutch, an upper paper feed roller 21b clutch, a lower paper feed roller 21a clutch, and charging. The image forming system of the charger 11 and the eraser lamp 14, the transfer system of the adsorption charger 36, the transfer charge v37, the first static elimination charger 38, and the second static elimination charger 42, and the illustrations necessary for the control of these systems. The outputs of various sensors that do not work are input.

Prior to explaining the paper ejecting device of the copying machine of this embodiment configured as described above, the general operation of full-color copying using four-color development of the copying machine will be explained. Hey, this behavior will be explained later.
This corresponds to "copy routine".

When the print start key 70 is turned on, the image reader unit 5 scans, starts the image forming operation for the first color, and transfers the transfer sheet from the lower paper feed cassette 20a or the upper paper feed cassette 20b to the transfer drum 30. supply will begin.

Scanning of the image reader unit 5 and exposure of the laser optical system 6 based on this exposure form a latent image on the photosensitive drum 10. Next, yellow toner is supplied from the first developing device 15 to form a latent image on the photosensitive drum 10. A yellow toner image is formed thereon (this is necessary for a negative-positive image forming system). This toner image is electrostatically transferred to a transfer sheet on a transfer drum 30.

Subsequently, a second color image forming operation is performed, and a magenta toner image is formed by the operation of the second developing device 16. Similarly, third and fourth color image forming operations are performed, and a cyan toner image and a black toner image are sequentially formed by the operation of the third developing device 17 and the fourth developing device 18. and are sequentially transferred to a transfer sheet.

Meanwhile, in parallel with the above image forming operation, the adsorption charger 36
Electrostatic attraction of the transfer sheet by the transfer sheet, electrostatic transfer by the transfer charger 37, etc. are performed. That is, when the print start key 70 is turned on, the transfer sheet 1- is transferred to the transfer drum 30.
The tip is fed towards the tip chucking claw 3.
Chucked by 1. Next, the dielectric screen is negatively charged by the discharge of the adsorption charger 36, and this electrostatic adsorption force causes the transfer sheet to be attached to the transfer drum 30.
is absorbed on top. At this time, the effect of attracting the transfer sheet to the transfer drum 30 is enhanced by the contact of the ground electrode 41.

As the transfer drum 30 rotates, a first color toner image is transferred onto the transfer sheet fed to the transfer section by discharging a positive charge from a transfer charger 37. As a result, the yellow toner image on the photosensitive drum 10 is electrostatically transferred onto the transfer sheet I~. At this time, the dielectric screen will be positively charged, and the transfer sheet will be electrostatically attracted by the electrostatic attraction force due to this polarity.

The transfer of the second color toner image, the third color toner image, and the fourth color toner image are performed in the same manner. As a result, the yellow toner image, magenta toner image, cyan toner image, and black 1 to toner images are transferred onto the transfer sheet in an overlapping manner, and the full-color toner images are transferred onto the transfer sheet in an overlapping manner to form a full-color toner image. be done.

When such a transfer process is completed, the process moves to a sheet separation process.

In this separation step, the transfer sheet becomes separable from the transfer drum 30 due to the opening movement of the tip chucking claw 31 and the static elimination action of the static elimination charger 38 and the static elimination charger 42, and then due to the pushing up action of the lifting wind for separation. , the transfer sheet is separated from the transfer drum 30 by the separation action of the separation claws 44 and guided to the conveyor 45.

Next, the operation of the paper ejecting device of a copying machine according to an embodiment of the present invention will be explained as follows.
This will be explained using a flowchart.

7 to 18 are flowcharts of a program for controlling a paper ejecting device of a copying machine according to an embodiment of the present invention.

FIG. 7 is a flowchart of a main program that controls the microcomputer 100 of a copying machine according to an embodiment of the present invention.

First, in step M1, initial settings are performed by turning on the power. In this initial setting, the evacuation position movement permission flag, normal position movement permission flag, copy flag, etc. are set to "OIT.In step M2, an internal timer that defines the time required for one routine of the main routine is started. After that, In step M3, a "power-on routine", which will be described later, is called, in step M4, an "auto clear routine", in step M5, a "key manual routine", and in step M6, a "power-on routine" is called.
``Copy Operation Routine'', and in step M7 ``Manual 1-
In step M8, one routine is completed after waiting for the end of the internal timer.

Note that the length of time for one routine is determined by counting the various timers used in the various routines described above.

That is, the end of each of these timers is determined based on how many times this routine has been executed.

When the power is turned on, first, the "power-on routine" shown in FIG. 8 is called in step M3, and in step S1 it is determined whether or not the power switch 93 is turned on. That is, when the power switch 93 is pressed, the "retreat position" is checked in step S2 to inquire whether the paper ejection tray 50 can be moved to the first setting position where the projected area of the plane protruding from the copying machine main body side is reduced. ``Movement permission determination subroutine'' is called, and in step S3, ``evacuation position movement subroutine'' is called. In this embodiment, the power is turned on using the power switch 93.
This is done by a switch (not shown) separate from the above.

Further, when the "auto clear routine" shown in FIG. 9 is called in step M4, it is determined in step S4 whether the auto clear standby timer set in advance in step 846 (described later) has expired, and the auto clear routine has exceeded the auto clear time. If it is,
In step S5, "evacuation position movement permission determination subroutine"
is called, and the "evacuation position movement subroutine" is called in step S6. If the clear time has not been reached, perform this routine for 1 time.

When the "key manual routine" shown in FIG. 10 is called in step M5, the copy flag is set to "1" in step 311.
”, and in step S11 the copy flag is “
When the value is O'', it means that the print start key 70 has not been pressed yet, so the ``all clear routine'' is called in step 313, and the ``print start routine'' is called in step 814. When the copy flag is "1" in step S11, it means that print star 1 to key 70 have been pressed, so step S11
In step 2, an "other key manual routine" that performs key manual processing not directly related to the embodiment of the present invention is called.

When the "copy operation routine" shown in FIG. 13 is called in step M6, it is determined in step 341 whether the fixed position sensor 57 is on, and if the fixed position sensor 57 is on, the copy flag is set in step S42. If the copy flag is "1", the "copy routine" for performing the above-described copying operation is called in step 343 to execute copying. When the copying operation is finished, step S44
It is determined whether the remaining number of copies is "0" or not, and when it is rOJ, it is determined that the copying is completed, the copy flag is set to "O" in step 345, and the auto clear standby timer is set in step 346. Let it start.

Further, if the fixed position sensor 57 is off in step 341, if the copy flag is ``O'' in step S42, or if it is not determined that copying is complete in step 344, this routine is exited.

When the "manual tray movement routine" shown in FIG. 14 is called in step M7, it is determined in step 351 whether or not the manual tray movement key 92 is on edge, and if the manual tray movement key 92 is on edge, step S52 At step 353, the "home position movement permission determination subroutine" is called, and at step 353, the "home position movement subroutine" is called, and this routine is exited. Further, if it is determined in step 351 that the manual tray movement key 92 is not turned on, this routine is exited.

Then, when the "all clear routine" shown in FIG. 11 is called in step 313, it is determined in step 321 whether or not the all clear key 91 is on edge, and when the all clear key 91 is on edge, in step 322 “Evacuation position movement permission determination subroutine”
is called, and in step 323, the "evacuation position movement subroutine" is called. If the all clear key 91 is not turned on, the process returns directly.

Further, when the "print start routine" shown in FIG. 12 is called at step 314, first, step 33
In step 1, it is determined that the print 1 to start keys 70 are on-edge, and when the print start key 70 is rarely on-edge, the copy flag is set to "1" in step 832.
Then, in step S33, the "home position movement permission determination subroutine" is called, and in step 334, the "home position movement subroutine" is called. Further, if the print start key 70 is not pressed, the process returns directly.

Next, the subroutines called in each of the above routines will be explained.

When the "home position movement permission determination subroutine" shown in FIG. 15 is called, the operating state of the home position sensor 57 is checked in step 361, and the home position sensor 57 is off and the paper output tray 50 is not at the second set position. When this is confirmed, it is determined in step 362 whether the current of the tray setting motor 55 is normal, and when the current of the tray setting motor 55 is normal, the normal position movement permission flag is set to "1" in step 363. . Also, when the fixed position sensor 57 is on, or
When the current of the tray setting motor 55 is abnormal, this routine is exited without setting the normal position movement permission flag to "1".

Furthermore, when the "evacuation position movement permission determination rib routine" shown in FIG. When it is confirmed that the tray setting motor 55 has no current, it is determined in step 372 whether the current of the tray setting motor 55 is a normal value, and when the current of the tray setting motor 55 is a normal value, the paper discharge detection sensor 68 is turned off in step 373. , it is determined whether a transfer sheet is placed on the discharge sheets 1 to 50. When no transfer sheet is placed on the paper output tray 50, the evacuation position movement permission flag is set to "1" in step 378.
”.

When it is determined in step 373 that the paper discharge detection sensor 68 is on and that the transfer sheet is placed on the paper discharge tray 50, a structure for holding the transfer sheet 1 on the paper discharge tray 50 is installed in step S74. Paper holding mechanism detector 67
If it is determined that a mechanism for holding the transfer sheet is installed on the paper discharge tray 50, the paper holding motor 66 is turned on in step 375, and the contact sensor 62 is turned on in step 376.
The paper holding motor 66 is rotated until it is turned on with a predetermined pressing force of 1q. In step 376, contact sensor 6
2 is turned on with a predetermined pressing force, the paper holding motor 66 is turned off in step S77, and
In step 378, the evacuation position movement permission flag is set to "1".

When it is determined in step 371 that the evacuation position sensor 56 is on, in step 372 the tray setting motor 5
When it is determined that the current in step 5 is not a normal value, step 37
When it is determined in step 4 that structure a for holding the transfer sheet is not installed on the paper discharge tray 50, this routine is exited.

When the "fixed position movement subroutine" shown in FIG. The output motor 55 is turned on to the forward rotation side, and the paper output tray 50 is moved to the second setting position.In step 883, it is determined that the fixed position sensor 57 is on, and this operation continues until the fixed position sensor 57 is turned on. The routine of steps S81, S82, and step 383 is continued, and when it is determined in step 383 that the fixed position sensor 57 is on, the tray setting motor 55 is turned on in step 884.
is turned off, the normal position movement permission flag is set to "0" in step S85, and this routine is exited.

Also, in step 881, the fixed position movement permission flag is set to “0”.
If it is determined, the tray 4Q regular motor 55 is turned off in step 884, the regular position movement permission flag is set to Opt in step 385, and this routine is exited.

Then, the "evacuation position movement subroutine" shown in FIG.
is called, it is determined in step S91 that the evacuation position movement permission flag is "1", and when the evacuation position movement permission flag is "1", the tray setting motor 55 is turned on to the reverse rotation side in step 892, Move the paper discharge tray 50 to the first setting position. When it is determined in step 393 that the evacuation position sensor 56 is on, the routine of steps S91, 392, and 393 is continued until the evacuation position sensor 56 is turned on, and when it is determined that the evacuation position sensor 56 is on in step S93, In step 394, the tray setting motor 55 is turned off, and in step 395, the evacuation position movement permission flag is set to "O'', and this routine is exited.

Also, in step 391, the evacuation position movement permission flag is set to “O”.
When It is determined, the tray setting motor 55 is turned off in step 394, and the evacuation position movement permission flag is set to "OIT" in step s95, and this routine is exited.

As described above, when the print start key 70 is turned on, the paper ejecting device of the copying machine of this embodiment sets the copy flag to "
1'', calls the "normal position movement permission determination subroutine" and the "normal position movement subroutine", and starts the copying machine from the first setting position where the projected area of the plane where the paper ejection tray 50 protrudes from the copying machine main body side is reduced. When the image is moved to the second setting position where the projected area of the plane protruding from the main body side is increased and the fixed position sensor 57 is turned on, the image is copied onto the transfer sheet.
Copy Routine”.

In addition, after processing the "copy routine" for copying onto the transfer sheet, the copy flag is set to "OH", and the "evacuation position movement permission determination rib routine" and "evacuation position movement subroutine" are executed as the time set in the auto clear timer elapses. to move the paper ejection tray 50 from the second setting position where the projected area of the plane protruding from the copying machine main body side is increased to the first setting position where the projected area of the plane protruding from the copying machine main body side is small. I'm returning it.

Then, at the same time as the power is turned on, the paper ejecting device of the copying machine of this embodiment executes the "evacuation position movement permission determination subroutine".
, calls the "evacuation position movement subroutine", and at this time, even if the paper ejection tray 50 is stopped midway due to a jam, or stopped between the second setting position and the first setting position. or even if it is stopped at the second setting position,
The paper discharge tray 50 can be moved to the first setting position where the projected area of the plane protruding from the copying machine main body side is reduced.

Furthermore, when a predetermined period of time has elapsed after finishing the copying operation, "
Auto clear routine", you can also use the all clear key 9.
By suppressing step 1, the "all clear routine" calls the "evacuation position movement permission determination subroutine" and the "evacuation position movement subroutine" to reduce the projected area of the plane where the paper ejection tray 50 protrudes from the copying machine main body side. The device can be moved to the first setting position by using the first setting position as the home position.

Therefore, when copying onto a transfer sheet, the paper ejection tray 50 is set at the second setting position where the projected area of the plane protruding from the copying machine body side from which the transfer sheet can be ejected is increased. In other cases, it returns to the first setting position where the projected area of the plane protruding from the copying machine main body side is reduced, so when using the manual feed guide 20c of the manual feed tray, the The paper output tray does not get in the way.

In addition, when the copying machine is in standby mode, the paper output tray can be placed in the first setting position, which reduces the projected area of the plane protruding from the copying machine main body, which is necessary in the retracted position. Easy to use.

When the power is turned on, the control means for selecting the second set position of the paper ejection tray only when the copying operation is in progress is set to the position of the paper ejection tray.
The device that moves the position of the relay to the first set position includes:
For example, when the paper output tray 50 is stopped halfway due to a jam, when it is stopped between the second setting position and the first setting position, or when it is stopped at the second setting position, ,
Prior to use of the copying machine, the paper output tray 50 can be initially moved to a first set position.

Further, if the control means selects the second setting position of the paper output tray only when the copying operation is in progress, and the first setting position is the home position of the paper output tray, the copying operation cannot be performed. When the process is finished, it can be placed on standby at the first setting position.

By the way, the paper ejecting device of the copying machine of the above embodiment has two settings: a first setting position where the projected area of the plane protruding from the copying machine main body side is small, and a second setting position where the projected area of the plane protruding from the copying machine main body side is large. In the above embodiment, the paper ejection tray whose set stop position is a set position of The paper ejection tray is moved to the set position, but when carrying out the present invention, the paper ejection tray plane is moved from the front to It may also be configured to move the paper discharge l/sheet from a first setting position substantially parallel to the back surface to a second setting position having a predetermined opening angle or a plane perpendicular to the side surface of the copying machine main body.

Further, since the driving means for displacing the position of the paper ejection tray in the above embodiment to the first setting position and the second setting position is determined by the structure of the paper ejection tray, the present invention can be carried out. In this case, the structure is not limited to the above structure, and any means that can displace the paper discharge tray to the first setting position and the second setting position may be used.

Furthermore, although the control means for selecting the first setting position for the sheet discharge l to shirley positions in the above embodiment when the copying operation is not in progress is controlled by a microcomputer, when carrying out the present invention, each The drive may be controlled by an independent circuit using a sensor or each key manually.

[Effects of the Invention] As described above, the copying machine paper ejecting device of the present invention has a first setting position where the projected area of the plane protruding from the copying machine main body side is small and a first setting position of the plane protruding from the copying machine main body side. a paper ejection tray whose set stop position is a second setting position with a larger projected area; a driving means for displacing the position of the paper ejection tray between the first setting position and the second setting position; The paper tray is comprised of a control means that selects the second setting position only when the copying operation is in progress, and can always be stopped at the first setting position when the copying operation is not being performed. .

Therefore, even if the paper ejection tray is disposed above the paper feed cassette, it will not get in the way when replacing the paper feed cassette or using the manual feed tray.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a mechanical structure of a part of a paper ejection device of a copying machine according to an embodiment of the present invention, and FIG. 2 shows a main body of a copying machine and its paper ejection device according to an embodiment of the present invention. FIG. 3 is an explanatory diagram of the first setting position for explaining the operation of the mechanical structure of the paper ejecting device of the copying machine of the embodiment shown in FIG. 1 is an explanatory diagram of the second setting position to explain the operation of the mechanical structure of the paper ejecting device of the copying machine according to the embodiment, and FIG. 5 is an illustration of the operation panel on the top surface of the copying machine body shown in An enlarged plan view, FIG. 6 is a circuit diagram of a control means used in a paper discharge device of a copying machine according to an embodiment of the present invention, and FIGS. 7 to 18 are paper discharges of a copying machine according to an embodiment of the present invention. 3 is a flowchart of a program that controls the device. In the figure, 20a: Lower paper feed force cellars 1 to . 20b: Upper paper feed cassette, 20c: Manual feed guide, 50: Paper ejection tray, 55: Tray setting motor, 56: Evacuation position sensor, 57: Fixed position sensor, 66: Paper holding motor. In the drawings, the same reference numerals and the same symbols indicate the same or equivalent parts.

Claims (3)

[Claims] (1) A first setting position where the projected area of the plane protruding from the copying machine main body side is small and a second setting position where the projected area of the plane protruding from the copying machine main body side is large are the setting stop positions. a paper tray; a drive means for displacing the position of the paper output tray to the first set position and the second set position; and selecting the first set position when the position of the paper output tray is not in a copying operation state. A paper ejecting device for a copying machine, comprising: a control means for controlling. (2) The control means for selecting the first setting position of the paper output tray when the copying operation is not in progress moves the paper output tray to the first setting position when the power is turned on. The paper ejecting device for a copying machine according to claim 1. (3) The control means for selecting the first setting position for the paper output tray when the copying operation is not in progress is characterized in that the first setting position is set as the home position for the stop position of the paper output tray. The paper ejecting device for a copying machine according to claim 1.