JP2587405B2 - Copier - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying machine, and more particularly to a control system for a copying mode.

BACKGROUND OF THE INVENTION In recent years, various devices and functions have been added to copying machines in order to increase the efficiency of copying operations. For example, if the original is 1
An automatic document feeder (see JP-A-59-198239, etc.) that automatically feeds and positions each sheet on the platen glass, and discharges after the end of exposure scanning. A divided copying function (see Japanese Patent Publication No. 59-21029, etc.) for forming an image on a copy sheet by dividing the paper is known.

By the way, if the automatic document feeder and the divisional copying function are provided in parallel in order to make the copying function more efficient, the following problem occurs. In other words, if the automatic document feed function is specified and the copy is executed in a state where the split copy function is specified, the sheet document fed by the automatic document feeder which does not need to be split is copied. And the second copy paper is ejected as a blank sheet.

Therefore, a copying machine according to the present invention has an automatic document transport function for automatically transporting a document onto a platen glass, and forms an image of a document in two parts on different copy papers. A first designating means for designating copying using the automatic document feeder function, a second designating means for designating copying using the split copying function, and a second designating means. When the copying using the automatic document feeding function is specified by the first specifying means when the copying by the divisional copying function is specified by the means, the above-mentioned specification by the second specifying means is released and the normal copying is performed. Control means for setting the state.

An embodiment of a copying machine according to the present invention will be described below with reference to the accompanying drawings.

First, the overall configuration of the copying machine will be described with reference to FIG.

A photoconductor drum (1) is supported at substantially the center of the main body of the copying machine (100) so as to be rotatable counterclockwise in the figure.
Around it, an eraser lamp (2), a charging charger (3), an image end and inter-image eraser (4), a developing device (6), a copying charger (7), a separation charger (8).
And a cleaning device (9) and the like are sequentially arranged.
The photoconductor drum (1) has a photoconductor layer on its surface,
The photoreceptor layer is uniformly charged by passing through the eraser lamp (2) and the charging charger (3), receives image exposure from the scanning optical system (10) through the slit (5), and rests on the surface thereof. An electrostatic latent image is formed.

The optical system (10) is installed so that the original image can be scanned below the original glass (16), and includes a light source (17), movable mirrors (11), (12), (13), and a lens (14). And a mirror (15). The light source (17) and the movable mirror (11) are (v / m) with respect to the peripheral speed (v) of the photoreceptor drum (1) (constant irrespective of the same magnification / variable magnification) (where m:
The movable mirrors (12) and (13) are driven to move integrally to the left at a speed of (v / 2m) at a speed of (copy magnification).

The copy paper is fed to an automatic paper feed mechanism (2
0) or is fed into the apparatus by a manual paper feed mechanism (30) provided thereon, and synchronized with an image formed on the photosensitive drum (1) after being temporarily stopped by the timing roller pair (21). The toner image is then transferred to a transfer unit, where the toner image is transferred by a transfer charger (7), separated from the surface of the photosensitive drum (1) by a separation charger (8), and fixed to a fixing device (23) by a conveyor belt (22). )
The image is fixed and discharged to a tray (24).

The toner and the charge remaining on the surface of the photoconductor drum (1) after the transfer are removed by a cleaning device (9), an eraser lamp (2), and the like, and are prepared for the next copying process.

In the case of automatic sheet feeding, an image forming system including the photosensitive drum (1) is started by operating a print key (61) (see FIG. 2) for starting a copying operation of the copying machine (100), and the photosensitive drum ( When the pre-driving process for 1) is completed, the paper feed roller (25) or (26) is driven, and the driving of the scanning optical system (10) is started by the scan start signal output with the conveyance of the copy sheet. The copy paper is fed in synchronization with the image forming operation. A few sheets of copy paper are extruded by the rotation of the paper feed rollers (25) and (26), and only the top one is an intermediate roller (28) by the next-stage separation mechanism (27) and (27 '). , (28 '). The intermediate rollers (28) and (28 ') are the timing roller pair (2
The drive is controlled in association with 1).

The copier (100) further includes an automatic document feeder (hereinafter A
Recorded as DF. ) (200) can be attached and the copying operation can be performed in conjunction with each other. When the switch (SW) detects that the ADF (200) is electrically connected to the main body of the copier (100) and that the ADF (200) is set at a predetermined position, the control of the ADF (200) and the copier (100) is performed. Are associated with each other to enable the operation of the ADF mode. In the ADF mode, when the print key (61) is operated with the sensor (SE) detecting that a document is set on the tray (203), the copier (100) enters a standby state. ADF (20
0) starts operation, and feeds the original placed on the original tray (203) along the upper surface of the original glass (16) of the copier (100), stops at a predetermined position, and sends the original from the ADF (200). A start signal is output to the copying machine (100) to start the above-described copying operation. When the final scanning movement for the original is completed, an operation signal is output from the copying machine (100) to the ADF (200), and the ADF (200) ejects the document to the output tray (20
4) Discharge on top. At this time, the next original is
3) If it is on the upper side, the next document is conveyed to a predetermined position together with the paper discharge.

The ADF (200) is generally a document feeder (201) that stocks a document and sends it to one sheet, and holds the sent document between the transport belt (211) and the upper surface of the document glass (16). The document is transported and stopped at a predetermined position on the glass (16) surface, and the original on the glass (16) surface is
4) The document transport unit (202) for sending out the document to the document transport unit (202). The document transport unit (202) can be used alone as a manual document transport device by manual feeding. Also, the original transport unit (202) is attached to the upper surface of the copier (100) and the original glass (1
It can be opened and closed with respect to the body of the copier (100) to expose 6), and can be used in the same way as a normal document cover. This opening and closing is detected by the detection switch (SW).

Next, the arrangement relationship of each operation key on the operation panel (60) of the copying machine (100) will be described with reference to FIG.

On the operation panel (60), a print key (61) for starting a copying operation, a numerical display device (62) capable of displaying a four-digit numerical value, "1" and "2", respectively.
Numeric keys (71) to (8) corresponding to numerical values of "9" and "0"
0), an interrupt key (63) for specifying interrupt copying, a clear stop key (64), a split copying specifying key (65), and a paper specifying key (66 for specifying copying paper loaded in multiple stages by size) ), Up and down keys (67) for changing / designating the copy image density in steps
(68), and key group (81) to copy magnification setting device
(84) and the like are arranged.

Switches and copiers (10
As shown in FIG. 3, various sensors provided in the ADF (0) and the ADF (200) are associated with a control mechanism including a microcomputer system.

Here, the control mechanism will be described with reference to FIG. The control is mainly performed by a microprocessor (hereinafter simply referred to as a CPU), mainly through various sensors in the copying machine (100), a key group on an operation panel (60), a display device (62), etc., and a decoder (90). And controls display output of numerical values, light emitting diodes, and the like, and outputs a signal related to control of a copying operation.

The control mechanism also has a RAM backed up by a battery to store variable data, and a CP for controlling the optical system.
U and ADF control CPU and the like (both not shown) are provided.

With this control mechanism, the copying operation of this copier, ADF (2
00) is controlled.

The document feeding operation is as described above. Whether the ADF (200) can be used is determined by the switch (SW) that detects the open / close of the ADF (200). (203) The determination is made by the sensor (SE) that detects the presence or absence of the upper sheet document.

Divided copying can be executed by turning on the designation key (65). That is, the divisional copying is not designated at the time of initial setting of the control mechanism, and is designated when the key (65) is pressed once, and the display lamp (65a) composed of a light emitting diode is provided.
Lights up. When the key (65) is pressed during the designation, the display is switched to undesignated, and the display lamp (65a) is also turned off. As a specific operation, first open the ADF (200), place the book on the original glass (16) with the left and right pages aligned in the scanning direction, and set the copy paper size for each page with the key (66). ). Here, when the print key (61) is turned on,
The optical system (10) scans and exposes only the first page and performs copying, and then the optical system (10) scans and exposes only the second page and performs copying.

Then, the ADF (200) becomes usable while the divided copy is designated (switch (SW) is turned on), and when the ADF mode is designated [sensor (SE) is turned on], the designation of the divided copy is canceled.

Next, the outline of the control contents of the CPU and the processing procedure of the copy mode set will be described with reference to FIG. 4 and FIG.

FIG. 4 shows the main routine.
In 1), resetting of each flag and initialization of data such as the number of copies and the copy magnification are performed. Next, in step (S2), various operation keys on the operation panel (60) are read. In step (S3), it is determined whether or not the copying machine (100) is operating. If YES, the copying operation is continued in step (S6), and NO
If so, in step (S4), a copy mode, which will be described in detail below, is set, and it is determined whether divided copying has been designated. In step (S5), other copy modes and various processes are set, and in step (S6), a copy operation based on the above settings is executed. Then, in step (S7), the process returns to step (S2) after waiting for the end of the internal timer. This internal timer controls the execution time of the main routine.

FIG. 5 shows the copy mode setting subroutine in the step (S4). First, it is determined in a step (S10) whether or not the divisional copy designation key (61) has been operated. If NO, the step (S18) And if YES, step (S1
In 1), it is determined whether or not the flag (61) is “0”. Flag (6
1) is a flag for enabling divisional copying when "1" and prohibiting when "0". At this time, since the flag (61) has been reset to "0" in the step (S1), YES is determined in this step (S11), and the step (S12)
(S14) is executed. That is, in step (S12), the copy mode is set to split copy, and in step (S13), the display lamp (65a) is turned on, and in step (S14), the flag (61) is set to "1", and the split copy is performed. Is possible.

Next, in step (S18), it is determined whether or not a switch (SW) for detecting whether or not the ADF (200) is usable is on. If NO is determined in this step (S18), that is, if the switch (SW) is off and the ADF (200) is usable, the process immediately returns to the main routine to execute divided copying. If YES is determined in step (S18), ie, the switch (SW)
Is on and ADF (200) is available, step (S1
In step 9), it is determined whether or not a sensor (SE) for detecting whether or not the ADF mode is designated is on. This step (S19)
If NO is determined, that is, if the sensor (SE) is off and the ADF mode is not specified, the process immediately returns to the main routine to execute the divided copying. But step (S19)
If the answer is YES, that is, the sensor (SE) is turned on and A
If the DF mode is designated, the copy mode is set to normal copy in step (S20), the display lamp (65a) is turned off in step (S21), and the flag (65) is set to "0" in step (S22). To reset the split copy.

On the other hand, steps (S15) to (S17) are steps for releasing the split copy by operating the key (65), and when the key (65) is operated again while the split copy is specified,
YES is determined in steps (S10) and (S11), the copying mode is set to normal copying in step (S15), the display lamp (65a) is turned off in step (S16), and the flag ( 65) to “0”.

Effects of the Invention As is apparent from the above description, according to the present invention, if the automatic document feed function is designated while the divided copy function is designated, the divided copy function is canceled and the normal copy state is set. Therefore, the automatic document feed function does not operate in the state where the split copy function is designated, and the problem that the sheet document is split and copied by the automatic document feeder can be reliably removed.

[Brief description of the drawings]

1 shows an embodiment of a copying machine according to the present invention, FIG. 1 is a front view showing an overall configuration, FIG. 2 is a plan view of an operation panel,
FIG. 3 is a circuit diagram of the control mechanism, and FIGS. 4 and 5 are flowcharts of the processing procedure. (1) Photosensitive drum, (10) Optical system, (20)
… Automatic paper feeder, (61) …… Print key, (65) ……
Division copy designation key, (100): Copy machine, (200): Automatic document feeder, (SW): Switch, (SE): Sensor.

Continuation of front page (56) References JP-A-60-98460 (JP, A) JP-A-59-180568 (JP, A) JP-A-59-198474 (JP, A) JP-A-60-158864 (JP) , A) JP-A-54-46562 (JP, A) JP-A-56-104727 (JP, U)

Claims (1)

(57) [Claims] 1. A copying machine having an automatic document transport function for automatically transporting a document onto a platen glass, and a divided copying function for dividing a document image into two and forming the images on different copy papers. A first designating means for designating copying using the automatic document feed function, a second designating means for designating copying using the split copying function, and copying by the split copying function designated by the second designating means. And control means for canceling the designation by the second designation means and setting a normal copy state when the copy using the automatic document feed function is designated by the first designation means. Copier.