JPS60100154A - Control device of copying machine - Google Patents

Abstract

PURPOSE:To prevent misoperation at the start of copying made by an unpractised operator by permitting an automatic original document feeder (ADF) to start its action even when he pushes a printing key on the side of a main body, if prescribed conditions are fulfilled, in using the ADF. CONSTITUTION:When it is detected with a switch SW1 that ADF200 is electrically connected with the main body 100, the action mode of the copying machine 100 is changed over to an ADF mode. When it is detected with a sensor SE3 that an original document is set on a tray 203, and a copy start key SSW attached to ADF200 is depressed, copying action is started. At that time, even if an operator pushes a printing key PSW attached to the side of the main body 100 by mistake, copying made with ADF200 is started so long as it is judged that the document is set on the tray 203 and a document conveyance unit 202 is not started.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention provides a control device i6i in a copying machine capable of being equipped with a 19J machine, more specifically, an automatic document feeder,
This invention relates to a control device i# in a copying machine that is controlled in a predetermined relationship with an automatic document feeder so as to start operating when a document is transported to a predetermined position.

PRIOR ART In general, originals are placed on a transparent original table.
In a type of copying machine that forms an image by projecting and exposing the image onto a photoreceptor, f7i) To simplify copying work,
It is possible to install an automatic document feeder (hereinafter abbreviated as ADF) that automatically transports a sheet-like document to a predetermined position on the transparent document stand. There are devices that are controlled in a predetermined relationship with the ADF so that a copying operation is started in response to a signal that is conveyed and stopped.

When using the ADF on this type of copying machine,
By operating the start key provided on the D F 1ill, the ADF's document feeding operation is started, and the copier is set to automatically start operation after the document is stopped at a predetermined position. However, users who are accustomed to making copies without using the ADF sometimes find that the ADF causes the copy machine to make two copies, starting the copying operation before the original is set in the correct position. There are some inconveniences such as having to put it away.

Purpose The present invention has been made in view of these points, and is
When using F, if certain conditions are met, the ADF will start operating even when the print key on the copying machine is pressed, and the copying machine will continue operating until the original is not set on the platen glass. The purpose of this invention is to provide a control device that prevents the following.

Example 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 using a control device according to the present invention. (10
An 11-volume nine-body drum (1) is rotatably supported in the medium heat section of the main body of the main body (1), and around it are an eraser lamp (2) and an electrostatic charger (2). 3), fine-edge and inter-image eraser (4), and current η-device (6).

A transfer charger (7), two separate chargers (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 uniformly charged by passing through an eraser lamp (2) and a charging charger (3), and is charged with a scanning optical system. It receives double-image exposure from the system (10) through the slit section (5), and an electrostatic latent image is formed on its surface.

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 (
]7) and the movable mirror (11) are the photosensitive drum (1).
For the circumferential velocity (V) (constant regardless of magnification or variable magnification), (
The movable mirrors 9- (12) and (18) move integrally to the left at a speed of (v/m) (where m: copy magnification), and
m) to move integrally to the left.

Copy paper is fed through an automatic paper feed mechanism (100), which has two upper and lower feeder mounting sections, located on the left side of the main body of the copying machine (100) in the figure.
20) or the manual paper feed mechanism (30
) is fed into the machine by the timing roller (21).
After the toner image is stopped, the toner image is sent to the transfer section in synchronization with the image formed on the photoreceptor drum (1), and the toner image is transferred to the transfer charger (7). The image is separated from the surface of the photoreceptor drum (1) by a conveyor belt (22) and sent to a fixing device (23) where it is twisted, the image is fixed thereon, and the image is discharged onto a tray (24).

After the transfer, the photosensitive drum (1) is cleaned by a cleaning device i7.
.

In the case of automatic paper feeding, the image forming system including the photoreceptor drum (1) is started by operating the print key (PSW) (see Figure 4) that starts the copying operation of the copying machine (100), and the image forming system including the photoreceptor drum (1) is started. When the pre-driving process for 1) is completed, the paper feed roller (25) and blade (26) are driven,
Drive of the scanning optical system (1o) is started by a scan start signal outputted as the copy paper is transported, and the copy paper is fed in synchronization with the image forming operation. Two or three sheets of copy paper are pushed out by the rotation of paper feed rollers (25) and (26), and sent to the next stage sorting mechanism (27) and (27').
) by which only the best one is the intermediate roller (28),
(28'). Intermediate roller (28
), (28') is the next stage timing roller (21)
Its drive is controlled by the related power χJ.

The copying machine (100) is further equipped with an automatic document feeder (hereinafter referred to as ADF) (200), and
111 to perform a copying operation. A D F
(The switch (20(1) is electrically connected to the main body of the copying machine (100) and installed at the predetermined position if &
When detected by SW'+), A D F (200
) and the control of the copier (1,00) are associated with each other,
The operation mode of the copying machine (100) is switched to ADF mode. ADF mode means that when the sensor (SE3) detects that a document is set on the tray (203) and the copy start key (SSW) provided on the ADF (200) is operated. , copying machine (
100) kept the state of (1 aircraft) A D F (2
00) starts its operation, feeds the original placed on the original tray (203) along the top surface of the original placing glass of the copying machine (100), stops at a predetermined position, and A D
Start toy No. 8 comes out from F (200) to the copying machine (100) to start the above-mentioned copying operation, and when the final scanning movement for the original is completed, the copying machine (100)
An operation signal is output from A D F (200) from 00),
A D F (200) sends the original to the output tray (204)
Paper is ejected to l. At this time, the next document is placed in the document tray (20
8) When pushed up, the next document is transported to a predetermined position at the same time as the sheet is ejected.

A D F (200) is basically a document feeding unit (A unit) that stores documents and sends them out one sheet at a time (20+
) and the original document placed on the 11-degree glass screen, and then transported, stopped at a predetermined position on the glass surface, and placed the second draft on the glass surface. No.1
It consists of a document transport unit (pF unit) (202) that sends out documents to a paper tray (204), and a DF unit (202).
) can also be used alone as a manual document conveyance device. The shredded DF unit (202) is attached to the copying machine (10
0) It can be opened and closed with respect to the main body of the copying machine (100) so as to expose the original document placing glass when it is stored on two sides of J, and can be used in the same way as a normal original cover.

This opening/closing is detected by a detection switch (SW).

The ADF (200) further includes an operating section and a sensor as shown in FIG. Figure 2 shows A D F (2
00), the operating section (250) is provided on the top surface of the DF unit (202), and the mode setting key (25
]) and mode display lamps (252), (258),
(254).

Mode display lamp (252), (253), (25
4) is lit up sequentially each time the mode setting key (251) is operated, and the control mode is set to "automatic paper selection" accordingly.

The automatic magnification selection 41 <J, r manual” can be selected.

Near the document insertion slot of the DF Unino (202), there is a length sensor (1.8'l) positioned at 11.7 so that it can detect the document regardless of the size and orientation of the inserted document. SE+) and an original width sensor (SEs) that takes two states of detection and non-detection depending on the width of the original are provided, and the size and orientation of the original are identified based on signals from these two sensors.

In the copying mechanism described above, the copying machine (100) is equipped with the PU operation and control mechanism described below, and performs control according to the states of various sensors and input switches.

FIG. 3 shows the arrangement of operation keys +3'd on the operation panel of the copying machine. The operation panel (50) includes a print key (PSW) for starting the copying operation.

A numerical display device (52) capable of displaying 4-digit numerical values, numeric keys (61) to (70) corresponding to the numerical values "1", "2", "9", "0", and interrupt copying specified. interrupt key (80), clear/stop key (81),
A heper selection key (82) for specifying copy paper loaded in multiple stages by size, anog and down key (&ll) for changing and specifying the copy image size in steps, (84), and Gears JIY (85) to (93) related to the copy magnification setting device are arranged. Note that each key corresponds to a normally open open/close switch in circuit terms, and in the circuit diagrams to be described later, the switches are indicated by marks or symbols attached to each key.

A switch corresponding to each of these input keys and one double hook (
As shown in FIGS. 4 and 5, each sensor installed in the ADF (200) and ADF (200) is connected to a control mechanism (400) including a microcomputer system
I get kicked.

4 and 5 show microprocessors (hereinafter simply referred to as CPU) (40+) to (40+) in the control mechanism (400).
408) and its input/output relationship. (40+)
is the main body CPU that plays a central role in control, and its normal out terminal (Sout) is connected to the serial in terminal (Sln) of each slave side CPU (402), (403), and the main body CPU (401) 7 real in terminal (Sin) is slave CPU (402)
, (408) serial out terminal (Sout) and interrupt request terminal (INTreq) are connected to each slave CPU.
interrupt terminal (INT) and clock output terminal (CLK
out) is the clock input terminal (CL
Kin) are connected to each other. Main unit CPU
The terminal (INTreq) of (401) goes high at a predetermined period.
From that serial out terminal (Sout), each slave CPU (402) is synchronized with the cycle.
, (403), sequentially sends data blocks containing transfer data to the path line by a clock signal,
Each slave CPU (402), (408) uses the "7" assigned to it at the timing of H11.
The data is received from the real in terminal (Sin) and the data is output from the serial out terminal in response to a clock signal. Main unit CPU (401) terminal (INT
request) is L'', each slave CPU (40
2) , (408) takes in the read data, performs calculations, writes new data to a register etc. as necessary, and sends it to the terminal (INTreq) of the main CPU (40+).
) is configured to wait for the signal to become H.

The main body CPU (401) is installed in the main body of the copying machine (+00), and mainly communicates with the key group and display device (52) on the operation panel (50) inside the copying machine (100) via the decoder (451). The controller is connected to the controller to control the manual input of 141 keys and the display output of numerical values, light emitting diodes, etc., as well as output information related to the control of the copying operation.

(452) is a RAM backed up by a battery (453), which stores variable data that should be retained even after the power is turned off, such as setting magnification data.

CPU (402) is a CPU for controlling the optical system (10)
It receives magnification data from the main body CPU (401), and accordingly, a DC motor (M,) for scanning drive is activated.
speed control circuit (456) and drive control circuit (457) for the step motor (M4) for controlling the position of the lens and mirror.
It outputs a control signal to and determines the output of the exposure start switch (SW, , O) and timing switch (SW, □), which are activated as the scanning system moves.

FIG. 5 shows the ADF control CPU (408) and its input/output relationship. ADF control cPU (4oa)
are provided in the AD F (200), including a mode setting key (251), a start key (SSW), a DF unit open/close detection switch (SWI), and a document set detection sensor (SE
, ) and document sensors (SE, ), (sEs), etc., and sends the input information to the main CPU (401), as well as display lamps (252), (253), (
254) and outputs a signal for controlling the document feeding and paper ejection.

FIG. 6 is a flowchart generally showing the control contents and processing procedures in the main body cpU (401).

In FIG. 6, step (#1) shows the initial setting process executed when the power is turned on. Initial settings mean reading out standard data for variable setting items of the operation mode from the ROM and setting them in a predetermined area of the RAM, such as the number of copies - 1, the copy magnification - 1x, and the exposure level - standard.
It means the process of resetting other RAM, registers, flags, etc. in p u (401).

In step (42), input processing of switches related to various operations and detection is executed.

Step (#3) is a subroutine for starting the operation of the copying machine (100), the details of which are shown in FIG.

Step (#4) is a subroutine that shows the process of controlling the operation of the copying machine (100), and its details are shown in FIG. 8(a).
, shown in (b).

Step (#5) is a determination step indicating the end control of this main routine, and the process returns to step (#2) every time the Ql-defined time period ends, thereby repeating the series of processes.

FIG. 7 shows the details of step (#3) in FIG. 6, and the conditions for starting the operation of the copying machine (100) are set. That is, in step (#301), it is determined based on the signal from the CPU (403) for controlling the ADF whether or not the Ig and documents are stacked seven times on the single stack tray (203), and in step (-#302) Then, check whether the open/close detection switch (SWI) of the DF unit (202) has been switched or not.
In step (101), N
If 'O' or YES in step (102), proceed to step (4304), and when the print key (P SW) is operated, set the copy start flag to '1', and if YES in step (4801) and step ( #302) NO
If so, proceed to step 1803') and press the print key (
PSW) is operated, the ADF start signal is set to IT1.
++ Execute the process to make it ++. This allows A.D.F.
(200) is installed, print key (P
If SW) is operated, the DF unit will be
) When the opening or closing of (202) is detected, the ministry assumes that the 1ljt manuscript has been manually set on the document tray (16) and immediately sets the copy start flag to I.
I 111 is a copying machine (
100), but w, the document is not in the tray (20).
3) Even though the DF unit (202) is not opened or closed, the print key (PSW) is
) is operated, the usage status is A D F (20
Assuming that you intended to operate the start switch (S SW) of 0) but accidentally operated the print key (P SW), first set the ADF start signal to I''.

The processing when the ADF start signal is +1111 is shown in FIGS. 10(a) and 10(b).

Step (#806) and (107) are steps (#806) and (107).
After setting the ADF start signal to 1p with 304),
This shows the process of waiting for the ADFCP U (403) to indicate that the copy has been issued and then setting the copy start flag by 11. The copy permission signal is A.D.
It is output from the CPU (403) when the document has been conveyed to the fixed position in F (200).

8(a) and 8(b) correspond to step (#4) in FIG. 6, and 71': l1 of the copy operation control routine.
11I. This will be briefly explained with reference to time chart 1- in FIG.

In [block 10], the copy start flag is “1”.
'', the main motor (M+), developing motor (M, ), electrostatic charger (3), and transfer 29' charger (7) are activated, and the copy start flag is set to ``0++'', and the copying operation is in progress. Set the copy flag "1", which means that Processing regarding the paper mechanism (30) will be omitted.

[Block 11. ], the end of this timer (TA) is determined and the paper feed clutch is turned off.

[Block 12] determines the end of the timer ("I'-B") and outputs a signal to the CPU (402) to turn on the scan motor (M8) and start the scan operation.

In [block 13], when a timing signal is output during the scan operation, the timing roller clutch (CL) is activated in response to the signal from the CPU (402).
I), and a process of setting a timer (T-C) is executed. By the timing roller (21), the photosensitive drum (
It is conveyed in synchronization with the image on 11.

In [block 14], it is determined that the timer (TC) has ended, and the charging, scan motor, and timing roller clutch are respectively turned off. In addition, the timer (T-
C) may be set variably depending on the size of the copy/sheet used.

In [Block 15], it is determined whether or not the set number of temporary copies have been made at the timing of the end of scanning during continuous copying tj, and if it is incomplete -r, a timer (T
-D).

In [block 16], the timer (1゛-D
), turns on the nail charger, sets timers (TA) and (T-B), and turns off the paper feed section on the selected side.

[Block 17] When the optical system returns to the home position with the final return operation and the switch is turned on at the home position, the developing motor and transfer charger (7) are turned off, and the copy flag is set to "0". At the same time, a process of setting a timer (TE) is executed.

In [block 18], the timer ('I' -E
3 is completed, and the main motor (M) is turned off.

Note that the timers (T-A) to (T-E), etc. explained in the above flowcharts and time charts are CPUs that are executed within the time specified by the internal timer.
This is a digital timer programmed to be automatically updated in one routine of the process (401), and the time-up time is stored as numerical data.

Figures 1θ (a) and (b) are A D F (200)
It is a flowchart showing an example of processing executed by the control CPU (403). In the figure, step (sl) indicates initial setting, and step (S2) indicates switch input processing.

Step (S3) is a step of determining whether or not a document is set on the document tray (208) based on the state of the sensor (SF3).
S4) sets the original signal to l″2, and if there is no original signal, step S5
) and set it to 0°, respectively, and set the main body CPU (4,01
).

In step (S6), the state of the opening/closing detection switch (SWI) of the DF unit (202) is determined.
7) and (88), the main body C
Sends a signal to P U (401). By switching this signal, the main body CPU (401) determines whether the D F (202) (7J) is open or closed.

In step (S9), it is determined whether or not the ADF (200) Nosk 1 switch (SSW) has been pressed. This turns the start switch (SSW) on.
When the document is separated, in step (510), it is determined whether the document in the document tray (203) is not M or not by the output of the sensor (SF3), and if there is a document, step (S12
), At (513), rJf starts rotating the document feed roller (205) to start conveying the document, and sets a timer (A'). In addition, the start switch (
If SSW) is not pressed, proceed to step (Sll) and download the ADF from the main body CPU (401) as described in lfj.
Separate the start signal from P1, and if it is "i", 1 white, 2 d self, X f near 7' (S12), (8
Proceed to 18).

Step (S14) Termination of timer (A') J'Ka'I
'll determined, step (S15), (816)
Proceed to stop transporting IJif Xi:8, and
A copy rrr permission signal is transferred to U (401).

Step (517) includes other processing in the CPU (403), such as "double mode switching keys (251
) The processing associated with the operation of step (
318) is the end determination of one routine explained above,
When the l routine ends, the process returns to step (S2) and the above process is repeated.

Effects As explained above, the present invention allows the automatic document feeder to be installed, and when the automatic document feeder is installed, the start switch provided on the automatic document feeder side can be operated. transports the original to the specified position,
In a copying machine that is connected to an automatic document feeder so that a copying operation is started after a certain time, means for determining an input from an operating means provided in the copying machine for starting a copying operation; 2. Means for determining whether the automatic document feeder is opened or closed with respect to the document placement section of the copying machine main body; means for determining that a document is set in the automatic document feeder; When the above-mentioned automatic A control 641 that starts the operation of the document feeder and also starts the copying operation when the operation to start the copying operation is performed after it is determined that there has been a change in the open/closed state of the automatic document feeder.
Since it is a control device with f + iii functions, there is the inconvenience of pressing the print key with the intention of starting the operation of the ADF, resulting in unnecessary duplication. can be solved without complicating the configuration.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing the relationship between a copying machine equipped with the control device of the present invention and an automatic document feeder, FIG. 2 is a plan view of the automatic document feeder, and FIG. '1 A plan view of the panel section, Figure 4 is a circuit diagram showing the CI of the control device and its input/output relationship, and Figure 5 is the C for A D Fili control.
Figure 6 is a circuit diagram showing the PU and its input/output IAI, Figure 6 is a flowchart 1 which generally shows the control processing procedure executed by the main body CPU, Figure 7 is the details of the copy operation start routine therein. Bozu flowchart, Figure 8 (
a) and (b) are flow charts showing the details of the copying operation routine, FIG. 9 is a time chart for explaining the copying machine operation, and FIG. 10 (a) and (b) are as follows.
This is a flowchart 1 showing an example of a control processing procedure executed by the ADF control CPU. +00・Copy machine, 200・・Automatic document feeder. 201A unit, 202...DF unit. 203 - Document tray, 400 - Control device. 401...Main CPU, 403...ADF control CP
U. SSW・ADF start switch, psw Print key SWI・・DF unit open/close detection switch SEI・
Original presence/absence detection sensor Applicant: Minolta Camera Co., Ltd. 4θJ WIJ7 Figure 8 (b) Figure 1O (1)

Claims (1)

[Claims] 1. An automatic document feeder can be installed, and when the automatic document feeder is installed, the document can be read by operating a start switch provided on the automatic document feeder side. In a copying machine associated with an automatic document feeder so as to convey the document to a predetermined position and then start a copying operation, means for determining an input to an operating means provided in the copying machine to start a copying operation. 2. Means for distinguishing the opening/closing state of the automatic document feeder with respect to the document placement section of the copying machine main body; and
III. A means for determining that a document is set in the document feeder; When the above-mentioned copy operation start operation is performed without switching, the operation of the above-mentioned automatic document feeder is started, and the table determines that there has been a change in the open/closed state of the above-mentioned automatic document feeder 1a. 1. A control device comprising: control means for starting a copying operation when an operation for starting a copying operation is subsequently performed.