JPS61167937A - Copying machine equipped with automatic original conveying device - Google Patents

Abstract

PURPOSE:To reduce the possibility of miscopying as much as possible by providing a control means which resets an ADF and a copying machine to their initial modes when an original is set automatically on the ADF and initializing magnification right after special copying low in occurrence frequency is ended. CONSTITUTION:An initial F is set to '0' every time a DF unit 202 is opened and closed to initialize the mode of the copying machine side, but when variable power copying of an original such as a book is executed, the magnification is reset to '1' every time the copying is executed. Therefore, when the DF unit 202 is open and an original is set on the paper feed tray 203 of the ADF200, it is decided that manual copying operation is completed and preparations for a next original group are made, thereby initializing the copying mode only in this case. Thus, the copying mode including copy magnification is initialized right after a special copying mode low in frequency of use is carried out, so miscopying operation is reduced securely.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a copying machine, and particularly relates to a copying machine that operates in conjunction with an automatic document feeder (hereinafter referred to as ADF) having a function of automatically detecting the document size. .

The copy mode of this type of copying machine is the manual mode, which copies according to the magnification set on the copying machine by the user and the copy paper size, as well as the manual mode, which copies based on the original size and the set copy magnification. Automatic copy paper selection mode that automatically selects the optimal size copy paper V! (hereinafter referred to as APS mode) and an automatic magnification selection mode (hereinafter referred to as AMS mode) in which a copying magnification is automatically selected based on the original size and the set copy paper size. In small and medium-sized copying machines that are optionally equipped with an ADF, these copy mode selection means are provided in the ADF. Although one of a plurality of copying modes can be arbitrarily selected by operating the selection means, a priority mode is set in advance in consideration of the original purpose of the ADF and the frequency of use.

That is, when the power is turned on or when no copying operation is performed for a certain period of time or more, the copy mode is automatically switched to a certain mode, and this certain mode is the priority mode. This priority mode (also the initial mode) is normally set to APS mode.

Incidentally, in such a case, when the previous operator selected the AMS mode and performed copying, the AMS mode is maintained for a certain period of time (for example, one minute) after the previous operator has selected the AMS mode. Here, the next operator may execute the copy without noticing this, which often results in erroneous copies, and moreover, a large number of erroneous copies. Also,
Even if the previous operator did not use the automatic selection function and made a variable size copy in manual mode, a similar copying error may occur if the next operator uses the ADF without noticing this. Ta.

The reason for this is that there are very few cases in which copies are made at a special copy magnification due to the frequency of use, and it is rarely confirmed by the display, and in most cases it is used after auto-clearing. The user is accustomed to copying without checking the mode selection display, and that the data is copied exactly as desired.
For example, the size of the copy paper is generally not displayed in the S mode.

The present invention is a copying machine that is linked to an ADF and is capable of executing multiple copy modes, and after a less frequently used copy mode is executed, it can be continued without checking the display or performing any key operations. The purpose of this invention is to reduce as much as possible the chances of miscopying even when copying is performed.

SUMMARY OF THE INVENTION Therefore, the present invention provides at least APS mode and AMS mode.
mode, and APS mode is selected as the initial mode, when a copy mode other than APS mode is selected, immediately after the ADF runs out of originals and the copying operation is completed, or APS mode is selected as the initial mode.
After executing a copy mode that does not use an automatic selection mode such as AMS or AMS, a control means is provided to return both the ADF and the copier to the initial mode when it is detected that a document has been set in the ADF. The basic feature is that the magnification etc. are automatically initialized immediately after completion.

X Superintendent Akane Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view schematically showing the configuration of a copying machine system equipped with a control device of the present invention, and the configuration and operation of the copying machine will first be explained with reference to this diagram.

A photosensitive drum (
1) is rotatably supported in the counterclockwise direction in the figure, and around it are an eraser lamp (2) and a charger (
3), image edge and inter-image eraser (4), developing device (6),
A transfer charger (7), a separate charger (8), a cleaning device (9), etc. are arranged in this order. The photoreceptor drum (1) is provided with a photoreceptor layer on its surface, and this photoreceptor is the same as the eraser lamp (2).
F/2) The sheet is electrically charged and receives image exposure from the scanning optical system (10) through the slit section (5) to form an electrostatic latent image on its surface. The image edge and inter-image eraser (4) has a plurality of light emitting diodes (LEDs) arranged in the image width direction, and removes unnecessary charges from the surface of the photoreceptor drum (1) during image formation.

The optical system (10) is installed below the original glass (16) so that the original image can be scanned, and includes a light source (17), movable mirrors (11), (12), (13), and a lens (14). and a mirror (15). The light source (1
7) and the movable mirror (11), the circumferential velocity (V) of the photoreceptor drum (1) (constant regardless of magnification or variable magnification) (v)
The movable mirrors (12) and (13) move integrally to the left at a speed of (v/2m) (where m: copying magnification).
is driven to move integrally to the left at a speed of In addition, when changing the copy magnification, use a step motor (M4
), the lens (14) moves on the optical axis and the mirror (15) moves and swings to correct the optical path, but such a magnification changing mechanism is already known in principle. The details are omitted.

Also, regarding the control of the speed (v/a+) of the scanning optical system (10), for the same reason, D
Control is performed to change the rotational speed of the C motor (M3), but a detailed explanation of the control method and the like will be omitted.

Copy paper is fed either by the automatic paper feed mechanism (20), which has two cassette loading sections (upper and lower), located on the left side of the main body of the copy fi (100) in the figure, or by the manual paper feed mechanism (3) installed above the automatic paper feed mechanism (20).
0) into the machine, and the timing roller (21
), the toner is sent to the transfer section in synchronization with the image formed on the photoreceptor drum (1), the toner image is transferred by the transfer charger (7), and the toner image is transferred by the separation charger (8). It is separated from the surface of the photosensitive drum (1) and sent to a fixing device (23) by a conveyor belt (22), where the image is fixed thereon and then ejected to a paper ejection tray (24).

After the transfer, the photoreceptor drum (1) is cleaned by a cleaning device (9).
), an eraser (2), etc. to remove toner and charges remaining on the surface, and prepare for the next copying process.

Either the automatic paper feed mechanism (20) or the manual paper feed mechanism (30) is selectively used.

In the case of automatic paper feeding, the image forming system including the photoreceptor drum (1) is started by pressing the print key (71) that starts the copying operation of the copying machine (100), and the image forming system including the photoreceptor drum (1) is started.
When the preliminary drive process for 1) is completed, the paper feed roller (25) or (26) is driven, and the scanning optical system (
10) is started and the copy paper is fed in synchronization with the image forming operation. For copy paper, 3 sheets of 2° are placed on the paper feed roller (2
5) and (26), and only the topmost one is conveyed by the next-stage sorting mechanism (27), (27').

The handling mechanisms (27), (27') include an upper roller (27a).
) = (27'a) is the lower roller (27b) in the paper feeding direction.
) and (27'b) are rotated in the paper pushing back direction as shown in the figure, and the second and subsequent sheets of paper that are pushed out together with the topmost paper by the paper feed roller are pushed out by the lower roller (27'b).
7b), (27''b), and only the topmost paper is sent out towards the next stage intermediate rollers (28), (28'). Intermediate rollers (28), (28')
As will be described later, the timing roller (21) is associated with the next stage timing roller (21) and its drive is controlled.

On the other hand, in the case of manual paper feed, when the copy paper is inserted from the manual feed slot (32) and the sensor (34) detects this, the manual paper feed roller (33) rotates and feeds the copy paper into the machine. At the same time or a little later, the photosensitive drum (1
) starts. The manually fed copy paper is temporarily stopped and on standby at the paper leading edge detection switch (35), and when the preliminary drive process including the rotation of the photosensitive drum (1) is completed, the paper feed roller (33) rotates again, which sends it into the aircraft.

In addition, each cassette mounting section of the automatic paper feed mechanism (20) has
Size detection switch (SWII) ~ (SW14) and (
SW21) to (SW24) are provided, and the operating state of the switch is changed by the arrangement of protrusions or magnets (not shown) provided on the loaded cassette, and the size of the loaded copy paper can be changed to 4 bits. It is determined by the hexadecimal code. As described above, many mechanisms are already known for determining the size of copy paper using a cassette containing copy paper, and a detailed explanation thereof will be omitted.

The copying machine (100) is equipped with an ADF (200) on the top thereof, and can perform a copying operation in conjunction with each other. A
The switch (O8) indicates that the DF (200) is electrically connected to the main body of the copying machine <100
W), the controls of the A D F (200) and the copier (100) are associated with each other and the copy f
The operation mode of f1 (100) is switched to ADF mode. ADF mode means that when the copy start key (SSW) provided on the ADF (200) is operated,
Copy W1 (100) remains in standby state and A D F
(200) starts its operation, feeds the original placed on the original tray (203) along the top surface of the original placing glass of the copy 191 (100), stops at a predetermined position, and A D F (200) A start signal is output from Copy@(100) to start the above-mentioned copying operation, and when the final scanning movement for the original is completed, Copy 8! An operation signal is output from (ioo) to the ADF (200), and the ADF (200) discharges the original onto the paper discharge tray (204). At this time, a large original is also transported to a predetermined position. 1m document tray (203)
The presence of the document on the top is detected by the document empty sensor (ES). While the presence of a document is detected by the document empty sensor (ES), the ADF mode is continuously performed.

The configuration of this ADF (200) is as follows: A document feeding section (A unit) that stores documents and sends them out one sheet at a time.
) (201) and the upper surface of the document tray, the document is conveyed and stopped at a predetermined position on the glass surface, and the document on the glass surface is transferred to the output tray (201). 2
04)) (20)
2). The DF unit (202) can be used alone as a manual document feeding device, and
As shown in FIG.
o) It can be opened and closed on the main body and can be used in the same way as a normal document cover. Copy ll11 (100) has
A magnet) (31) is installed, and when the DF unit (202) is closed, the switch (OSW), which is a reed switch, is turned on, and when it is opened, the switch (OSW) is turned on.
iOFF and the ADF (200) becomes a non-ADF mode.

The ADF (200) can automatically detect the size of the document. A document fed from the A-Unit (7) (201) is sent to the Document Size Sensor (SSE), which is made up of multiple units and is installed in the document receiving section of the DF Unit (202).
) to detect the document width, and this sensor (S
Its length is detected by monitoring the transit time at SE). Various methods are already known for detecting the document size, and the above-mentioned example will only be mentioned, and a description of the specific configuration and operation will be omitted.

FIG. 3 shows the production panel of Copy II (100). The operation panel (70) includes a print key (1) for starting the copy operation, an interrupt key (72) for temporarily interrupting the multi-copy operation, and a key for stopping the copy operation or canceling the set number. clear/stop key (
73), numeric keypad for setting the number of copies per multi-copy (
74), a display section (75) for displaying the number of copies and the status of the copying machine, an up/down key (76) for setting the copy density, and a paper selection key (77) for selecting the copy paper size. , a paper size display section (78) for displaying the selected copy paper size, a magnification selection key (79) for selecting the copy magnification, and a magnification display section (80) for displaying the selected magnification. ) etc. are provided. Note that paper selection is based on A4. Two sets of B5 are provided in advance.

FIGS. 4(a) and 4(b) show the operation/display section of the A D F (200). (SSW) is a start switch for starting continuous copying using the ADF, that is, ADF mode, and the display section (232) shows A D F (
200) indicates whether reception is possible, and when it is lit, operating the switch (SSW) starts the ADF mode. Figure 4 (b) is DF Units)
(202) shows the mode selection section formed at the top of (202);
MSW) is a mode selection switch for selecting a copy mode, and the display section (233-1), (233-2)
, (233-3), one of the selected copy modes is displayed by lighting.

In this example, the copy mode includes an automatic copy paper selection mode (Aut.

Paper 5election mode ie A
PS mode) and automatic magnification selection mode (Auto Magnification 5ele) that automatically determines the copy magnification based on the detected original size and selected copy paper.
(AMS mode) and a manual mode (Manual mode) in which copy magnification and copy paper size can be arbitrarily set.

FIG. 5 is a circuit diagram showing the main parts that control the copying machine (100) and the ADF (200). copy fi
(100) is @ICP consisting of a microcomputer
U (300), A D F (200) is the same (second CPU (4
00) performs its main control.

In the th ICPU (300), P ao - P ay
are the print key (71), interrupt key (72), clear/stop key (73), numeric keypad (74), density up/down key (76), paper selection key (77), and magnification selection key (79). It is an input boat. pb is an output port to a 7-segment type display unit (75) consisting of a liquid crystal, LED, or fluorescent display tube, and this display unit (75) is output from multiple boats via a decoder (303).
) will display the number of multi-copies, etc. Pc is an output port to the paper size display section (78) and magnification display 1!5 (79), and is an output port for the decoder (304) from multiple boats.
), the selected copy paper size and/or selected copy magnification are displayed on an LED or the like.

Pd is an input/output board including an interrupt terminal for communicating with the second CPU (400);
(200) and the signal of the original size detected by A.D.F.
It receives a print start signal from the start switch (SSW) of the Zoo, transmits a predetermined signal from here, and exchanges signals with each other. Further, Pe is an input/output port for data communication with the RAM (305) which is operated by a battery, and is activated when copy data is on hold at the time of interruption due to the operation of the key (72).

In the second CPU (400), ph, -ph,
is the start switch (SSW), DF unit (201
) is an input port for a switch matrix consisting of an oven switch (O8W) that detects the opening and closing of the oven switch (O8W) and a mode selection switch (MSW). Pi is an output port to a mode display section (233) consisting of an LED, etc., and displays the mode selected from a plurality of boats via a decoder (401). Pj is an output port for the ADF REA-DY display section (302) that displays whether or not the operation of the ADF (200) can be accepted, and Pk is the output port for the first C
It is an input/output board that includes an interrupt terminal for communicating with P U (300).

Next, the first CPU (30
0) and the second CPU (400) of ADF (200)
The operation mode in which the control operations are performed in relation to each other will be explained based on charts 70 in FIGS. 6 to 8.

70 in FIG. 6 showing the operation of the first CPU (300)
- In the chart, when the power is turned on, the birdware resen F is engaged and the program starts.

In step (S501), initial settings are performed, where at least the number of copies is set to "1" and the copy magnification is set to "1".

In step (S502), key manual processing is performed based on the user's input operation. Next step (S503)
Now, press the print key (71) on the copying machine or the ADF.
The state of the print signal that becomes "1" when the side start switch (SSW) is operated is determined. "1"
If so, set the copy flag (F) to "1" in step (S504>).If not, set the copy flag (F) to "1" immediately (S50
Proceed to step 5) of the copy operation.

In the copy operation routine of Step (S505), a series of copy operations are performed based on input conditions.

Note that this copy operation is actually performed when copy F is "1".

In step (S506), the second CP
Performs data communication with U (400). Next step (
In S507), when the copy operation is completed, the first CP
It is determined whether the copy end signal (temporarily becomes "1" at the end of copying) obtained at U (300) is "1". If it is "1", proceed to step (8508), otherwise proceed to step (S509). In step (8509), it is determined whether copy F is rOJ. If it is "1", copying is continued and the process returns to step (S502). If it is "0", the copying operation has already been completed, and the process advances to step (S510). In the step (8508), the copy end signal is "1".
Therefore, copy F is forcibly set to "0" regardless of rIJJOJ of copy F. Step (S510)
Then, 12CP is set to the second CPU (400).
It is determined whether the state of the initial flag (F) transmitted from U (400) is "0". If it is not "0", the process returns to step (S502), but if it is "1", the process proceeds to step (S501), that is, the initial setting step.

Therefore, the copy operation is not completed in step (S507).
)), (of,!-!i copy F is rOJQ and first [F is also r.

”Noto! (Step (S510)), Step (S50
In 1), the initial mode is set in which the number of copies is "1" and the copy magnification is "1".

70 in FIG. 7 showing the operation of the second CPU (400)
- In the chart, when the power is turned on, a hardware reset is applied and the program starts.

In step (A601), initial settings are performed, and the CPU
Processing such as clearing the internal RAM, registers, etc., and setting initial values to built-in timers are performed. Next, in step (ABO3), the initial flag provided in this CPU is set to "0", and in step (ABO3), the mode register is set to [0] indicating the initial mode, and then in step (A604). ) with mode = “
0'', processing for APS mode is performed.

In step (ABO3), it is determined whether the DF unit) ff close switch (OSW) is "0"("O" is the open state, [1] is the closed state), and if rOJ, the step Proceed to (ABO3) and set the initial F to "0"; otherwise, since the mode is to use the ADF, proceed to step (A607).

In step (A607), the mode selection switch (MS
Whether the signal W) has risen (whether it has been operated or not)
Determine. If it is not operated on, immediately step (
A620), but if it is operated, step (
A608), (A609), (A612), (A613
).

Proceed to either (A616). That is, the current mode is rO
If it is J, it will be “1”, if it is [1], it will be “2”, “2”
If so, switch the mode to "0".

When the mode becomes "1" (step (A609)), processing for the AMS mode is performed in the next step (A610). When this process is completed, step (A611)
``1'' is set to the initial F. When the mode is "2" (step (A613)), processing for manual mode is performed in step (A614), and after this processing is completed, initial F is set to "1" in step (A615). Further, processing for the APS mode is performed in step (A616) and step (A617) when the mode as the initial mode is "0".

After this process is completed, rOJ is set in the initial F (
step (A618)).

In the next step (A620), it is determined whether the ADF start switch (SSW) signal has risen (or whether it has been operated). If operated, step (A62
Proceed to step 1) and make sure the DF unit open/close switch (OSW) is set to “
1”, and if it is “1”, proceed to the next step (
In A622), a predetermined operation, that is, an ADF operation is performed. A
Units) (201) feeds the original, and DF Units)
In this step, the document size is detected in the receiving section (202), the document is fed along the lath (16), stopped at a predetermined position, aligned, and the previous document is ejected at the same time.

Branching to the negative side in step (A620), or when step (A621) is "0", or step (
When the operation is completed in step (A622), step (A630)
You can proceed to In this step, the first CPU (300
), it is determined whether the transmitted copy end signal is "1". If it is not “1”, step (A 605)
Return to If “1”, next judgment step (A640)
Proceed to. Here, it is determined whether copy F in the first CPU (300) is "0". If it is not "0", it goes back one step (ABO3) like the previous step, but if it is rOJ, it returns to step (ABO3). That is, the initial flag is set to "0" again in step (A 602 ), and the next step (A 603 )
The mode register is set to “0” and the initial mode (
APS mode). That is, step (A622
) to end the ADF operation, or press the switch (OSW)
becomes "0", and then, when the copy end signal is "1" and the copy F is "0", the mode is set to APS mode in step (ABO3), and it is displayed on the display section (233-1) in step (ABO3). The state is such that it is displayed on the screen. Incidentally, the routine (A650) is for performing communication processing with the first CPU (300) by interrupt processing, regardless of this main routine.

FIG. 8 shows a partial flowchart according to another embodiment. The 70-chart in FIG. 7 refers to the step (A 60
5 ) and (ABO3), step (A 660
') is provided.

That is, in the example shown in Fig. 7, the initial Fl is set each time the DF Ninia (202) is opened and closed, and the mode on the copying machine side can be initialized. If you do so, the magnification will return to 11 every time you copy. Then, when the DF unit (202) is open,
If an original is set on the paper feed tray (203) of the D The copy mode can be initialized only when

Specifically, initial settings are performed in step (A601) in FIG. 7, and then steps (ABO3) to (ABO3) are performed.
), the DF unit open/close switch (O3
It is determined whether W) is "0", and if so, the process proceeds to step (A 660 ); otherwise, the process proceeds to step (ABO3) in FIG. In step (A660), the document empty sensor (ES) (see Figure 11)
0"("0" when there is a document), go to step (A 606), otherwise go to step (
A 607). Step (A 606)
Now that manual copying has been completed and the next group of originals has been set in the paper feed tray, rOJ is set in the first MP, and this is used in step (S510) in Figure 6 and initialized in the initial setting step (S501). The magnification is initialized to "1". Also, in step (A640) in Figure 7, the copy F
Since is "0", the process returns to step (ABO3), and the mode is initialized in step (ABO3), as described above.

As is clear from the above description, according to the present invention, the copy mode including the copy magnification is initialized immediately after executing a special copy mode that is rarely used, so that mistakes can be avoided. It has the effect of reliably reducing

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view of a copying machine system according to an embodiment of the present invention, FIG. 2 is a schematic perspective view showing the DF unit in an open state, and FIG. 3 is a schematic plan view of the operation panel of the copying machine. ,
4(a) and 4(b) are schematic plan views of the operation/display section of the ADF, FIG. 5 is a circuit diagram showing the main parts of the control circuit of the copying machine system of the embodiment, and FIG. 6 is the copying machine. Flowcharts showing an overview of the control operations performed by the CPU, FIGS. 7 and 8
Each figure is a 7T:J-chart showing an overview of control operations performed by the CPU of the ADF. 100... Copying machine, 200... ADF (automatic document feeder), 1... Photosensitive drum, 10... Scanning optical system, SSE... Document size detection sensor, ES...
Original empty sensor, 300,400...CPU
. Patent applicant Minolta Camera Co., Ltd. Agent
Person Patent Attorney Iku Osamu Maekawa Figure 6

Claims (1)

[Claims] (1) An automatic copy paper selection mode that works in conjunction with an automatic document feeder that can detect the original size and automatically selects the copy paper size based on at least the original size and the set copy magnification; In a copying machine that is capable of executing an automatic magnification selection mode that automatically selects a copy magnification based on a set copy paper size, and is configured to execute the automatic copy paper selection mode as an initial mode,
When a copying mode other than the above initial mode is executed, immediately after the copying operation in that mode ends, or after copying is executed in a mode that does not automatically feed the original, the original is placed in the automatic document feeder. A copying machine equipped with an automatic document feeder, characterized in that the copying machine includes a control means for detecting and returning both the automatic document feeder and the copying machine to an initial mode.