JP2849380B2 - Copier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying apparatus having a copying function and a facsimile function and having a function switching means for switching between the copying function and the facsimile function.

[0002]

2. Description of the Related Art Conventionally, various types of composite apparatuses in which a facsimile apparatus and a copying apparatus are combined have been proposed.

[0003]

In a conventional multifunction device,
Fax originals sent to the remaining copy originals collided, damaging both originals, or the copy originals were erroneously transmitted.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks, and an object of the present invention is to provide a copying apparatus capable of preventing damage to a document or erroneous fax transmission of a copied document.

[0005]

According to a first aspect of the present invention, there is provided a function switching means having a copying function and a facsimile function, for switching between the copying function and the facsimile function, and a document reading position. A document placing table on which the document is placed, document detecting means for detecting the document placed on the document placing table, automatic document feeding means for automatically sending the document, and the automatic document feeding means. Determining means for determining whether or not a document is placed on the document, and when the function switching means switches from the copy function to the fax function or from the fax function to the copy function, the document is detected by the document detection means. The automatic document feeder is configured to automatically discharge the document when the automatic document feeder determines that the document is placed by the automatic document feeder. And it is characterized in that is.

In order to achieve the above-mentioned object, a second aspect of the present invention comprises a copying function and a facsimile function, a function switching means for switching between the copying function and the facsimile function, and a start function for starting copying or facsimile transmission. A switch, a document table on which a document is placed at a document reading position, document pressing means for pressing a document placed on the document table, and open / close detecting means for detecting opening and closing of the document pressing means; Document detecting means for detecting a document placed on the document placing table, and the document placing table when the open / close detecting means detects that the document pressing means is not opened after the start switch is pressed. And the function switching means is switched from the copy function to the fax function or from the fax function to the copy function. When changed, the by the document detecting means original is detected, and when the document remaining is determined by the original residual determining means is characterized in further comprising an alarm means for warning.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of the entire multifunction peripheral. As shown in the figure, the multifunction device includes a scanner unit A,
It mainly comprises an operation unit B, a plotter unit C, and a fax unit D.

The scanner unit A includes a scanner control unit, C
A CD, an automatic document feeder (ADF), and the like are provided.
The operation unit B includes an operation panel described later. The plotter unit C includes a main control plate for controlling the entire operation, a sequence control plate for controlling the operation from the supply of the transfer paper to the discharge, and a sorter. The fax unit D includes a fax interface, a communication circuit, and the like.

Next, a specific configuration of a digital copying machine as a copying apparatus will be described. FIG. 2 is a configuration diagram of the entire digital copying machine, and FIG. 3 is a plan view of a writing unit in the digital copying machine.

First, a schematic configuration of a digital copying machine will be described with reference to FIG. As shown in FIG. 1, the digital copying machine includes a copying machine main body, an automatic document feeder, a sorter, and a duplex reversing unit.

The main body of the copying machine includes a scanner section, a writing section, a photosensitive section, a developing section, a paper feeding section, and the like. Next, the configuration and operation of each unit will be described.
[Scanner unit] A first scanner equipped with a reflecting mirror 1, a light source 3, and a first mirror 2 and moved at a constant speed, and a first scanner 1 equipped with a second mirror 4 and a third mirror 5 The second moving at the speed of / 2 following the first scanner
And a scanner. An original (not shown) on the contact glass 9 is optically scanned by the first scanner and the second scanner, and the reflected image is guided to the lens 7 via the color filter 6 and is placed on the one-dimensional solid-state imaging device 8. It is imaged.

A fluorescent lamp, a halogen lamp, or the like is used as the light source 3, and a fluorescent lamp is generally used because its wavelength is stable and its life is long. In this embodiment, the reflecting mirror 1 is attached to one light source 3.
Two or more light sources 3 may be used. Since the solid-state imaging device 8 has a constant sampling clock, the fluorescent lamp has an adverse effect on the image unless it is turned on at a higher frequency.

The solid-state imaging device 8 is generally a CC
D is used. Since the image signal read by the solid-state imaging device 8 is an analog value, the analog / digital (A /
D) The image data is converted and subjected to various image processings (binarization, gradation processing, scaling processing, editing, etc.) on the image processing board 10, and converted into a digital signal as a set of spots.

In this embodiment, in order to obtain color image information, a color filter 6 that transmits only necessary color information is disposed in the middle of the optical path guided from the original to the solid-state image pickup device 8 so as to be able to enter and exit. Color filter 6 according to the scanning of the original
In and out, the functions such as multiple transfer and double-sided copy are activated each time, and a variety of copies can be created.

[Write Unit] The image information after the image processing is
The light is written on the photoreceptor drum 40 in the form of a set of light points by raster scanning of laser light in an optical writing unit.

As a laser light source, a He-Ne laser has been used. The wavelength of this He-Ne laser is 633.
nm, which has been used because it matches well with the sensitivity of conventional photocopier photoreceptors. However, there are problems such as the fact that the laser light source itself is very expensive and that the device cannot be directly modulated, which complicates the device. doing.

In recent years, semiconductor lasers which are inexpensive and can be directly modulated have been used due to the increase in sensitivity in the long wavelength region of photoconductors. This semiconductor laser is also used in this embodiment.

FIG. 2 is a plan view showing the writing section. The laser light emitted from the semiconductor laser 20 is converted into a parallel light beam by the collie-met lens 21, and
2, the light beam is shaped into a light beam having a certain shape. The shaped laser light enters the polygon mirror 24 in a form compressed in the sub-scanning direction by the first cylinder lens 22.

The polygon mirror 24 has an accurate polygon and is rotated at a constant speed in a fixed direction by a polygon motor 25 (see FIG. 2). The rotation speed is determined by the rotation speed of the photosensitive drum 40, the writing density, and the number of surfaces of the polygon mirror 24.

The reflected laser light incident on the polygon mirror 24 is deflected by the rotation of the mirror 24. The polarized laser light is applied to the fθ lenses 26a, 26b,
26c sequentially. fθ lenses 26a, 26b, 2
6c converts the scanning light having a constant angular velocity so as to scan at a constant speed on the photosensitive drum 40, forms an image on the photosensitive drum 40 so as to have a minimum light spot, and further has a surface tilt correction mechanism. I have.

The laser light that has passed through the fθ lenses 26a, 26b, 26c is guided to a synchronization detection sensor 30 by a synchronization detection mirror 29 outside the image area, and a predetermined time after a synchronization signal for generating a cue signal in the main scanning direction is output. Later the image data is 1
One line is output, and thereafter, this is repeated to form one image.

[Photosensitive part] A photosensitive layer is formed on the peripheral surface of the photosensitive drum 40. Semiconductor laser (wavelength 780n
m) as an organic photoreceptor (OP
C), α-Si, Se—Te, and the like are known. In this embodiment, the organic photoconductor (OPC) is used.

Generally, in the case of laser writing, there are two types of processes: a negative / positive (N / P) process in which light is applied to an image portion and a positive / positive (P / P) process in which light is applied to a background portion. Adopts the former N / P process.

The charging charger 41 is of a scorotron type having a grid on the photoconductor side.
Is uniformly (-) charged, and the image forming portion is irradiated with laser light to lower the potential of that portion. Then, the background portion of the surface of the photosensitive drum 40 has a potential of about -750 V to -800 V and the image portion has a potential of about -500 V, and an electrostatic latent image is formed on the surface of the photosensitive drum 40. This is supplied to the developing devices 42a and 4
In step 2b, a bias voltage of -500 to -600 V is applied to the developing roller, and the electrostatic latent image is visualized by attaching the charged toner to (-).

[Developing Unit] The apparatus of the present embodiment includes a main developing unit 4
2a and a sub-developing device 42b. In the case of a single black color, the sub-developing device 42b and the toner replenishing device 43
b is to be removed. In this embodiment having two developing units, black toner is put into the toner supplying unit 43a paired with the main developing unit 42a, and color toner is put into the toner supplying unit 43b paired with the sub developing unit 42b. During the development of a color, the development is selectively performed by changing the position of the main pole of the developing device of another color.

This development is performed by reading color information by switching the color filter 6 of the scanner, multiplex transfer of the paper transport system,
Multifunctional color copying and color editing can be performed in combination with the double-sided copying function. For the development of three or more colors, there is a method of arranging three or more developing devices around the photosensitive drum 40, a revolver method of rotating three or more developing devices, and the like.

The images visualized by the developing units 42a and 42b are transferred to the paper surface synchronized with the photosensitive drum 40 by applying (+) charge from the back surface of the paper by the transfer charger 44. You. The transferred paper is subjected to AC static elimination by a separation charger 45 held integrally with the transfer charger 44, and is separated from the photosensitive drum 40.

The toner remaining on the photosensitive drum 40 without being transferred to the paper is scraped off from the photosensitive drum 40 by a cleaning blade 47 and collected in an attached tank 48. Further, the pattern of the potential remaining on the photosensitive drum 40 is erased by irradiating light with the charge removing lamp 49.

A photo sensor 50 is provided immediately after the development. The photo sensor 50 includes a pair of a light emitting element and a light receiving element, and detects the reflection density on the surface of the photosensitive drum 40. This means that a certain pattern (for example, black or halftone pattern)
Write to the position corresponding to the photo sensor reading position,
The density of the image is determined from the ratio of the reflectance of the pattern portion after development to the reflectance of the photosensitive drum 40 other than the pattern portion. If the ratio is low, a toner supply signal is output. In addition, the fact that the density does not increase even after replenishment can be used to detect the lack of the remaining amount of toner.

[Sheet Feeding Unit] In this embodiment, a plurality of cassettes 6
It has paper sheets 0a, 60a, and 60c, and paper that has been transferred once is passed through a refeeding loop 72 so that double-sided copying or refeeding is possible.

When a start button is pressed after one of the cassettes 60a, 60a, 60c is selected, the sheet feed rollers 61 (61a, 61b, 61c) near the selected cassette 60 are pressed. ) Is rotated and the paper is swiftly fed until the leading end of the paper hits the registration roller 62. Although the registration roller 62 is stopped at this time, the registration roller 62 starts rotating at a timing corresponding to the image position formed on the photosensitive drum 40 and feeds the paper to the peripheral surface of the photosensitive drum 40. Thereafter, the toner image is transferred at the transfer unit, and the paper is sucked and conveyed by the separation and conveyance unit 63, and the transferred toner image is transferred onto the paper surface by a fixing roller including a pair of a heat roller 64 and a pressure roller 65. Establish.

The paper transferred in this manner is guided to the sorter-side paper discharge port by the switching claw 67 during normal copying. On the other hand, at the time of multiple copying, the sheet passes through the lower sheet re-feeding loop 72 without being changed in direction by the switching claws 68 and 69 and is guided to the registration roller 62 again.

In the case of double-sided copying, there are two cases, one in which the copying machine is used alone and the other in which a double-sided reversing unit is used. Here, the former case will be described. Switching claw 67
The paper guided further downward is further guided downward by the switching claw 68, and guided to the tray 70 further below the sheet re-feeding loop 72 by the next switching claw 69. Then, the sheet is fed again in the reverse direction by the reversal of the roller 71, guided to the sheet re-feeding loop 72 by the switching of the switching claw 69, and fed to the registration roller 62.

[Automatic Document Feeder (ADF)]
F automatically guides the documents one by one onto the contact glass 9 and discharges them after copying.

The document stack placed on the document feeder table 100 is aligned in the width direction of the document by the side guide 101. The placed originals are separated and fed one by one by a feed roller 104, and are transported to a predetermined position on the contact glass 9 by the rotation of the transport belt 102 and positioned.

When a predetermined number of copies have been completed, the original is discharged onto the discharge tray 103 by rotation of the transport belt 102 again. The document size can be detected by counting the position of the side guide 101 and the document feeding time.

[Sorter] This is a device for selectively feeding copy sheets discharged from the copying machine body, for example, in page order, page by page, or to bins 111a to 111x set in advance. Copy paper fed by a plurality of rollers rotated by the motor 110 is guided to the selected bin 111 by switching the pawls near the entrance of each bin 111.

[Duplex Reversing Unit] As described above, the copying machine main body can perform only two-sided copying for each sheet. However, by installing the two-sided reversing unit, two-sided copying can be performed collectively.

When making a double-sided copy of a plurality of sheets, the sheet guided downward by the sheet discharge roller 66 is sent to the double-sided reversing unit by the next switching claw 67. The paper entering the double-sided reversing unit is accumulated on the tray 123 by the paper ejection roller 120. At this time, the length and width of the copy paper are aligned by the feed roller 121 and the side alignment guide 122. The copy sheets stacked on the tray 123 are re-supplied by the re-feed roller 124 during backside copying. At this time, the sheet is guided directly to the re-feeding loop 72 by the switching claw 69.

1 and 2, reference numeral 23 denotes a soundproof glass, 27 denotes a mirror, 28 denotes a dustproof glass, 31 denotes a lens holding unit, 46 denotes a separation claw, 80 denotes a main motor, and 81 denotes a fan motor.

[Electrical Control Unit] FIGS. 4 and 5 are block diagrams of the entire copying machine. Both figures are obtained by dividing one block diagram, and are partially overlapped with the central processing unit CPU (a). If these figures are connected at that part, it becomes a whole block diagram.

The control unit of the copying machine has two CPUs. The CPU (a) controls sequence
U (b) controls operations. The CPU (a) and the CPU (b) are connected by a serial interface (RS232C).

First, the sequence control will be described.
The sequence controls the timing of paper conveyance, paper size sensors, paper conveyance sensors such as paper ejection detection and registration detection, double-sided units, high-voltage power supply units, drivers such as relays, solenoids, motors, sorter units, and laser units. , A scanner unit, and the like.

In terms of sensors, a paper size sensor that detects the size and orientation of the paper loaded in the paper feed cassette and outputs an electric signal according to the detection result, and a sensor related to paper conveyance such as registration detection and discharge detection Signals from a sensor for detecting the presence or absence of a supply such as an oil end or a toner end, and a sensor for detecting a machine abnormality such as a door open or a fuse blown are input.

In the double-sided unit, a motor for aligning the paper width, a paper feed clutch, a solenoid for changing the transport path, a paper presence / absence sensor, a home position sensor of a side fence for aligning the paper width, and a sensor for paper transport are provided. and so on.

The high-voltage power supply unit applies a predetermined high-voltage power to each of the charger, the transfer charger, the separation charger, and the developing bias electrode.

The driver includes a paper feed clutch, a registration clutch, a counter, a motor, a toner supply solenoid, a power relay, a fixing heater, and the like.

[0048] The sorter unit is connected by a serial interface.
The paper is conveyed at a predetermined timing and discharged to each bin. Analog input includes fixing temperature, photo sensor input,
The monitor input of the laser diode and the reference voltage of the laser diode are input. The fixing temperature is controlled on and off by an input from a thermistor in the fixing unit so that the temperature of the fixing unit is constant. The photosensor input controls the toner density by turning on and off the toner supply clutch by detecting the density of the pattern by inputting a photosensor pattern formed at a predetermined timing by a phototransistor. .

As a mechanism for adjusting the power of the laser diode to be constant, an A / D converter and an analog input of a CPU are used. This is controlled so that the monitor voltage when the laser diode is turned on coincides with a preset reference voltage (this voltage is set so that the laser diode becomes 3 mW).

The image control circuit generates timing signals such as masking, trimming, erasing, and photosensor patterns, and sends out video signals to the laser diode.

The gate array synchronizes an image signal continuously transmitted in 2-bit parallel from the scanner with a synchronizing signal PMSYNC from the laser beam scanner unit, and further converts the image signal into a 1-bit serial signal synchronized with the image writing signal RGATE. The image data is converted and output to the image control circuit.

Next, the operation-related control will be described. The main CPU controls a plurality of serial ports and a calendar IC. An operation unit, a scanner, a facsimile, an interface unit, and the like are connected to the plurality of serial ports in addition to the sequence control CPU.

The operation unit has a display for displaying the key input of the operator and the status of the copying machine. The key input information is transmitted serially to the main CPU, and the display is turned on by serial reception from the main CPU. The scanner serially transmits information relating to image processing and image reading, and exchanges preset information contents with the fax and interface unit. The calendar IC stores the date and time, and the machine can be turned on and off based on this information.

FIG. 6 is a block diagram of the image scanner unit. An analog image signal output from the CCD image sensor 407 is amplified by a signal processing circuit 451, and A / A
The signal is converted into a digital multilevel signal by the D converter 452. This signal is subjected to correction processing by the shading correction circuit 453, and is applied to the signal separation circuit 454.

The image information input to the signal separation circuit 454 is processed and separated into a binary image component signal such as a character and a halftone image component signal. The binary image component signal is applied to a binarization processing circuit 456, and the halftone image component signal is applied to a dither processing circuit 455. The binarization processing circuit 456 converts the input multi-valued data into binary data using a preset fixed threshold value. The dither processing circuit 455 determines input data based on a threshold value set in advance for each scanning position, and outputs binary data including halftone information.

The signal synthesizing circuit 157 synthesizes the binary signal output from the binarization processing circuit 456 and the binary signal output from the dither processing circuit 455 to generate a signal DATA1.
And a signal DATA2.

The scanner control circuit 460 controls the lamp control circuit 458, the timing control circuit 459, the electric scaling circuit 461, and the scanner drive motor 465 according to an instruction from the printer control unit. Lamp control circuit 458
Performs on / off and light amount control of the exposure lamp 402 according to an instruction from the scanner control circuit 460.

A rotary encoder 466 is connected to the drive shaft of the scanner drive motor 465, and the position sensor 462 detects the reference position of the sub-scanning drive mechanism.

The electrical scaling circuit 461 performs electrical scaling processing on dithered image data and binarized image data in accordance with main-scanning-side magnification data set by the scanner control circuit 460.

The timing control circuit 459 outputs each signal according to the instruction from the scanner control circuit 460. That is, when reading is started, the CCD image sensor 40
7 is supplied with a transfer signal for transferring one line of data to the shift register and a shift clock pulse for outputting the data of the shift register one bit at a time. For the image reproduction system control unit, the pixel synchronization clock pulse C
LK, a main scanning synchronization pulse LSYNC, and a main scanning effective period signal LGATE.

The pixel synchronization clock pulse CLK is C
This signal is almost the same as the shift clock pulse given to the CD image sensor 407. Also, the main scanning synchronization pulse L
SYNC is almost the same as the main scanning synchronization signal PMSYNC output from the beam sensor of the image writing unit, but the output is prohibited when no image is read. The main scanning valid period signal LGATE is the output data DA
It goes high at the timing when TA1 and DATA2 are considered valid data.

In this example, the CCD image sensor 4
07 outputs 4800 bits of valid data per line. The output data DATA1 is data of each odd-numbered pixel, and the output data DATA2 is data of each even-numbered pixel. Upon receiving a reading start instruction from the printer control unit, the scanner control circuit 460 turns on the exposure lamp 402, starts driving the scanner drive motor 465, controls the timing control circuit 459, and starts reading the CCD image sensor. Further, the sub-scanning effective period signal FGATE is set to a high level H. After the signal FGATE is set to the high level H, when the time required to scan the maximum reading length (in this example, the size in the A size longitudinal direction) in the sub-scanning direction elapses, the signal FGATE becomes the low level L.
Becomes

FIG. 7 is a block diagram of the fax unit. As shown in the figure, the fax section consists of a main board,
SAF unit, FCU unit, network control unit (NC
U), a communication circuit, a telephone, and the like.

This system is based on memory transmission and reception. Therefore, at the time of transmission, the document information is
Store after sending to memory. Also, at the time of reception, the data is stored in the SAF memory and then output when the printer is idle. The switching between the copy mode and the fax mode will be described later in detail.

FIG. 8 is a block diagram of the power supply unit. AC100V from the power cord 80 is connected to the main switch (S
The power is supplied to the main power supply unit and the scanner power supply unit through W2) or the sub switch (SW1). The main power supply unit supplies DC power to a main control board, a sorter control board, a fax control board, and the like. On the other hand, the scanner power supply unit supplies DC power to a scanner control unit, an ADF control unit, an operation unit, and the like.

FIGS. 9 and 10 are a component arrangement view as viewed from the front and a component arrangement view as viewed from the back of the multifunction peripheral. In FIG. 9, reference numeral 82 denotes an operation unit, 83 denotes a power relay, 84 denotes an SSR of a heater, a transport fan, a motor, and the like;
85 is a relay unit, 86 is a safety switch, 8
7 is a door switch, 88 is a total counter, 89 is a fax reception counter, 90 is a communication circuit board, 91 is a receiver, and SW2 is a main switch. As shown in the figure, the main switch SW2 is provided on the front side of the apparatus as in a normal copying machine.

In FIG. 10, reference numeral 92 denotes a main control board;
3 is a noise filter, 94 is a circuit breaker, 95
Is a cleaning power pack, 96 is a bias roller power pack, 97 is a blade solenoid, 98 is a charging / bias power pack, 99 is a toner supply solenoid, 105 is a registration detector, 106 is a color detector,
107 is a manual feed detector, 108 is a network control unit, 109 is a first paper feed micro clutch, 1
12 is a paper end detector, 113 is a second paper feed micro clutch, 114 is a third relay micro clutch, 115
Is a resist micro clutch, 116 is a feed control plate, 1
17 is a modem, 118 is a fax interface board, and SW1 is a sub-switch. As shown in the figure,
The sub switch SW1 is connected to the main switch SW2.
In a different location, ie, at the rear of the multifunction device.

FIG. 11 is a power supply circuit diagram, and FIG. 12 is a power supply circuit diagram for DC. As shown in FIG. 11, if any one of the sub-switch SW1 and the main switch SW2 is turned on, AC power is supplied to the main body. The main switch SW2 includes the switch SW
2 to detect if 2 is on or off,
1, AC2 are provided. AC1 and AC2 are D
A circuit as shown in FIG. 12 is incorporated in the C power supply circuit.

Therefore, when the main switch SW2 is off, AC is supplied, the photocoupler is turned on, and C
The input of the PU goes low "L". On the other hand, when the main switch SW2 is on, the photocoupler is off, and C
The input of the PU goes high "H".

Next, how to use the main switch SW2 and the sub-switch SW1 will be described.

(A). Do not use the fax function,
When used as a single copier In this case, the sub-switch SW1 is turned off and the main switch SW2 supplies 100V power to use as a normal copier.

(B). When used as a combined fax and copier a. Sub switch SW1 is on, main switch SW2
Is in the off state. A soft reset signal is sent to each system, and each CPU that has received it performs RAM clear, port off, etc., and is in the same state as the power-on reset. Not done). At this time, the main relay connected to the sequence CPU is also turned off, and all the AC systems in the apparatus are turned off.

However, as is clear from FIG. 8, the main power supply unit and the scanner power supply unit have A
C100V is supplied to each CPU.
C power is supplied. This state is a state in which the main switch SW2 is turned off and the facsimile is in the night reception mode because it is not used as a copying machine at night.

At this time, when the sub-switch SW1 is turned off, AC 100 V is not supplied to the apparatus main body at the time when the main switch SW2 is turned off, and all the power supply units are also turned off, so that the fax cannot be received at night. Therefore, if there is no sub switch SW1 and only the main switch SW2, the main switch SW2 is not always turned on even at night (naturally, in this state, the power relay is also turned on, and the AC fan, the preheating heater, etc. are also turned on. Power consumption is increased), and night reception cannot be performed.

In this respect, as in the present invention, the main switch S
By providing the W2 and the sub-switch SW1 separately, the sub-switch SW1 is turned on and the main switch SW2 is turned off at night when the copier is not used, so that each output port of the scanner, the sequence, the operation unit and the power All relays can be turned off, which saves considerable power. In addition, since the fax control unit is supplied with DC power (5 V, ± 12 V), the fax is in the reception mode.

B. When the sub switch SW1 is on and the main switch SW2 is on By turning the main switch SW2 from off to on, a program start signal is sent to each CPU and each C
The PU starts operating.

When a copy error occurs (for example, an error such as a paper jam or a serviceman call) while using a copying machine, the main switch SW2 is normally turned off to on to reset it. In the case of a composite device with a facsimile machine, the same switch is switched. At this time, if there is no sub switch SW1, all the fax data being received or being transmitted will be cleared. However, at this time, if the sub-switch SW1 is turned on, turning the main switch SW2 from off to on does not affect the transmission and reception of the fax.

FIG. 13 is a flowchart for selecting a facsimile and copy mode using a key. One key is provided for selecting the fax mode and the copy mode. When this key is pressed, a buzzer sounds, and if already in the fax mode, the fax mode is turned off, the user select flag is turned off, and the copy state before entering the fax mode is returned.

When the key is pressed, in the case of the copy mode, the fax mode is turned on, the user select mode is turned on, and if the ADF return display is displayed, the mode is turned off. Feed out, save the copy mode at that time and move to fax mode. At this time, a copy / fax display panel switching pad (which will be described later), in which the copy input face and the fax input face can be slidably changed, is checked. For example, a warning message such as "FAX NO PANEL" is displayed.

FIG. 14 is a flowchart for selecting a fax and copy mode using a pad. When the pad is changed from the fax mode to the copy mode, if the pad is already in the copy mode, return is performed as it is. If the pad is in the fax mode, the fax mode is turned off, the user select flag is turned off, the copy mode is set, and the copy mode is returned.

When the pad is changed from the copy mode to the fax mode, if the mode is already the fax mode, the warning display is turned off and the user select is turned on. In the copy mode, the fax mode is turned on, the user select is turned on, the ADF process is performed, the copy mode is saved, and the mode is shifted to the fax mode.

FIG. 15 is a flowchart for resetting the copy and fax modes. The default of copying and faxing can be switched by a dip switch or the like according to the user's request. At the time of auto reset, the mode is determined by the dip switch. If the apparatus is not operated for a certain period of time (for example, one minute), an automatic reset is performed.

When the copy mode is set at the initial time, the copy mode is set. When the fax mode is set at the initial time, the copy mode is set. When the user selects the fax mode, the copy mode is set. When the user is not selected, the copy mode is returned to the initial state.

The switching by the fax / copy changeover switch or the pad can be performed without a key counter (for example, a key card). This is a key counter is just a copy counter,
This is because sending a fax has nothing to do with it.

FIG. 16 is a flowchart of the key counter display. When the key counter is turned on, or when the mode is shifted to the fax mode even when the key counter is turned off, the key counter display is turned off.

FIG. 17 is a flowchart of the counter control. The copier is provided with a counter for counting specific sheets other than the total counter. When the fax is online, when the copy feed signal comes, the counter is incremented in the fax mode and not counted in the copy mode.

When the fax is not online, it is used as a copy counter (in this case, A
3 counter), and count up when paper of A3 paper size is fed. In this case, the A3 counter is used as an example, but the counter may be used as a jam counter or the like.

Thus, the total number of sheets passed is counted by the total counter, and the number of sheets passed by facsimile can be known by the fax counter, which is very effective in service to the user.

In this case, the number of sheets passed at the time of facsimile is counted. However, when a fax is connected, only the number of sheets passed for copying is counted according to the same principle.

FIG. 18 is a flowchart of the sorter control. A sorter of a copying machine has a tray that is normally discharged and an interrupt tray that is discharged when a mode error or an interruption occurs. In the fax mode, the printed paper is discharged to an interrupt tray without being output to a tray normally used in a copying machine. This eliminates the inconvenience of copying the paper sent by fax.

When a sorter is not used, a 2-bin discharge tray is provided, one is a copy machine tray, and one is a fax tray. By using the two-bin tray, paper printed out by fax and paper printed out by copying can be separated.

FIG. 19 is a flowchart of the control of the fax reception in the copy mode. When the reception of the fax is completed in the copy mode, a print request signal is sent from the fax. The printer is in a ready state and for a certain period of time (for example, 30
If no operation has been performed for more than 2 seconds, a print OK signal is output and the mode automatically shifts to the fax mode. When the printer is not in the ready state, or when the fixed time has not elapsed even in the ready state, a print NG signal is output.

That is, when the printer is not ready,
For example, during the period when there is a possibility of continuing the copy operation such as door open, jam, serviceman call, etc.,
Do not shift to fax mode. As a result, the fax is printed out only during the time period when the apparatus is open, so that the downtime of the copying machine can be extremely reduced. If an operation is performed by the operator during this print output, the user select flag is turned on.

FIG. 20 is a flowchart showing the control of fax reception during the preheating mode. When the reception of the fax is completed during the preheating mode, a print request signal is sent from the fax. At this time, since the printer is in the ready state and is not being used as a copy, the printer is automatically switched to the fax mode immediately. At this time, a print okay is output and the preheating flag is turned on. If an operation is performed by the operator during this print output, the preheating flag is turned off and the user select flag is turned on.

FIG. 21 is a flowchart when the fax print is completed. When all the data received by the fax is output, the end of the fax print is sent when the last sheet is discharged. At this time, if the user select mode is on (the fax mode is turned on by the user's will), the fax mode is continued and the mode reset (FIG. 15) or the fax / copy switch or pad is operated. Do not move to copy mode until

When the user select mode is off, the fax mode is turned off. When the preheat flag is on, the mode returns to the preheat mode. When the preheat flag is off, the mode returns to the copy mode.

If there is a print request from a facsimile, it is possible to shift to the facsimile mode and print out even if there is no key counter. This is because the key counter is just a copy counter and has nothing to do with fax printing.

Even if the number of copies is managed by the key counter, there is no mistake because there are a total counter and a fax counter. When shifting to the fax mode, the key counter display turns off.

All of these systems are connected by a serial interface, and a signal is sent to each system in the order of initial set → program start, and each system (sequence, operation unit, scanner, fax) receives the program start. At this point, normal operation is performed. If only the initial set signal, each system is in the initial state (RAM clear, out port off, etc.)
Waiting at.

FIG. 22 is a flowchart showing the power supply control method. This flow is incorporated in one part of the main routine. First, the timer checks whether a predetermined time has elapsed. This is because each system takes time to finish the initial set at the time of reset.

Next, the main switch SW2 on flag is checked. When this flag is on, the main switch S
Check if W2 is on (ie check AC detection). Return when main switch SW2 is on, 1 when main switch SW2 is off
Check again after 00 msec. (This is done for a certain period of time to prevent malfunction due to noise.)
When it is on, it returns, and when it is off, it turns off the flag and sends out the initial set signal to each system.

When each system receives this signal, the RAM
And turns off all ports, creating a power-off state in a simulated manner. At this time, naturally, the sequence is also initialized and the relay is turned off, so that no AC is supplied into the apparatus. This state continues until the main switch SW2 is turned on.

If the main switch SW2 on flag is off, it is checked whether the main switch SW2 is on. If it is off, it returns, and if it is on, it checks again after 100 msec. If it is off, it returns; if it is on, it turns on the flag and sends out a program start signal to each system. Upon receiving this signal, each system starts operating.

When using the switches SW1 and SW2 as a single copier without using the fax function, the sub-switch SW1 is always turned off, and the main switch SW2 is turned on and off. On the other hand, when used as a copier-fax composite device, the sub-switch SW
1 is always on, and the main switch SW2 is used as a pseudo main switch. Usually, the time period during which the copying machine is operated is, for example, about 8:00 am to 8:00 pm. During this time, the main switch SW2 is turned on, and in other time zones, the main switch SW2 is turned off. However, faxes must be available 24 hours a day.

Therefore, the DC power supply always operates by always turning on the sub-switch SW1. Since this DC power is supplied to the fax, the fax operates even when the main switch SW2 is turned off, and can receive.

In this state, when reception of a fax is completed and a print request signal is received, the system is started up (a program start signal is issued) and printed out. In this case, the system has been launched,
Only the printer may be started.

After the printout is completed, an initial set signal is output again to turn off the system. When the initial set signal enters a facsimile, the facsimile only detects power-off and does not perform operations such as RAM clear and port off.

FIG. 23 is a flowchart of the fax print. FIG. 24 is a plan view of an operation panel when used as a single copier without using a fax function, and FIG.
5 is a plan view of an operation panel when used as a multifunction device having a fax function.

In FIG. 24, reference numeral 301 denotes a sorter key pressed when using a sorter, 302 denotes a double-sided key pressed when performing double-sided copying, and 303 denotes automatic copying of a two-page spread original one by one, or an automatic double-sided original. Page copy key to be pressed when copying one side at a time, 30
Reference numeral 4 denotes a liquid crystal display for displaying an explanation of an operation method and an operation state of the apparatus. Reference numeral 305 denotes a blanking key which is pressed when the entire copy is to be hollowed out. Reference numeral 306 denotes a case where the black portion and the white portion of the entire copy are reversed. Key 307 is a marker area non-erasing erase key that is pressed when erasing outside the range specified by the line marker, and 308 is a marker area internal erasing key that is pressed when erasing the area specified by the line marker. A key 309 is a marker area processing key which is pressed when the area specified by the line marker is hollowed out. A marker area processing key 310 is pressed when the white part and the black part in the range specified by the line marker are reversed. This is a black-and-white inversion key.

Reference numeral 311 denotes a double copy key which is pressed when two small originals such as A5 and B6 sizes are simultaneously copied onto double-size paper at the same time. Reference numeral 312 denotes a copy at a magnification suitable for the designated paper size and the original size. Paper specification scaling key to be pressed at the time of printing, 313 is an independent dimension scaling key pressed at the time of designating the vertical and horizontal dimensions of the document: original, 314 is an independent dimension scaling key pressed at the time of specifying the vertical and horizontal dimensions of the copy Double key: Copy, 315 is an independent scaling key pressed to specify the vertical and horizontal magnification of the copy, 316 is 1% of the copy magnification
This is a zoom variable key to be pressed when specifying in increments.

Reference numeral 317 denotes a copy / fax switching lever. When the lever 317 is switched to the copy side as shown in the figure, editing copy such as marker area processing and independent magnification can be performed. When the lever 317 is switched to the fax side as shown in FIG.
Key operation of each function of the facsimile as described later becomes possible.

Reference numeral 318 denotes a set number display portion, 319 denotes a copy number display portion, 320 denotes a reduction key, 321 denotes an enlargement key,
322 is an equal size key, 323 is a paper selection key, 324 is an automatic paper selection key, 325 is a document type key, 326 is a density adjustment key, 327 is an automatic density key, and 328 is a removable top cover (seal). When using only this, the upper lid 328 is attached.

Reference numeral 329 denotes an interrupt key, 330 denotes a program key to be pressed when storing or recalling a program, 331 denotes a preheating / mode clear key, 333 denotes data in the independent variable magnification mode, independent dimension variable mode, and liquid crystal display. The ♯ key which is pressed when answering the question of the section 304,
334 is a start key.

The copy / fax switching lever 31 described above.
When 7 is switched to the fax side, as shown in FIG. 25, a part of the operation panel is automatically changed in accordance with the switching operation. In the figure, reference numeral 335 denotes a multi-mode key which is pressed when registering a destination of one-touch dialing or the like, and 336 denotes a telephone: a telephone mode key which is pressed when setting to manual reception.
Is the mini-fax 1 key that is pressed when the destination is mini-fax 1, 338 is the plain key that is pressed when the size of the original is larger than normal, 340 is the lowercase key that is pressed when the size of the original is small, 340 is A transmission key 341 is pressed when starting transmission, and a one-touch dial key 341 is pressed when registering a telephone number with one touch or when making a call with one touch.

When used as a multifunction device, FIG.
The upper cover (seal) 328 shown in FIG. Then, as shown in FIG. 25, a shortening key 342, a pause key 343, and a NO. A key 344 and a copy / fax changeover switch 345 are arranged.

FIGS. 26 to 28 are diagrams for explaining a switching mechanism (pad) of the operation panel display when the copy / fax switching lever 317 is switched. As shown in these figures, on the inner bottom of the rectangular frame 346,
The copy display panel 347 is fixed. Above the copy display panel 347, a fax display panel 3
48 is slidably disposed.

As shown in FIG. 24, the copy display panel 347 has keys 305 and 306 for processing the entire surface, keys 307 to 310 for processing the marker area, a double copy key 311, a paper specification scaling key 312, and an independent dimension scaling function. Keys necessary for a copying machine, such as a double key 313, 314, an independent variable key 315, and a zoom variable key 316, are provided.

On the other hand, as shown in FIG. 25, the fax display panel 348 has a multi-mode key 335, a telephone mode key 336, a mini-fax 1 key 337, a normal character key 338, a small letter key 339, a transmission key 340, and a one-touch dial. Keys necessary for faxing such as the key 341 are installed.

At the rear end of the fax display panel 348, a filler 349 is provided integrally. A copy display panel 3 is provided at the front end of the fax display panel 348.
The switching lever 317 is connected to the opening 47 so as not to interfere with the switching lever 317, and the switching lever 317 is connected to the upper end of a rotation lever 351 supported by the support shaft 350. A transmissive photosensor 351 is provided at a position facing the filler 349, and is a panel cover 352 in the figure.

FIG. 25 shows a case where the frame is used as a copying machine.
6, a copy display panel 347 is exposed, and various keys provided on the copy display panel 347 can be operated. In this state, the fax display panel 348 is hidden below the cover 352. By moving the switching lever 317 to the fax side (to the left in the drawing), the fax display panel 348 is moved together with the cover 3.
FIG. 27 shows a state in which the fax display panel 348 is being pulled out.
FIG. 28 shows a state in which the fax display panel 348 is set in the frame 346. When the filler 349 is inserted into the photosensor 351, a set signal for detecting the setting state is output from the photosensor 351. You.

FIG. 29 is a control block diagram of the display panel unit. 351 in the figure is a photosensor shown in FIGS. 33 to 35, 353 is an operation section key matrix, 354 is an operation section LED matrix, 355 is a display section microprocessor, 356 is a latch, 357 is a decoder, 358 is a control program and fixed. RO that stores display data
M, 359 are RAMs for storing arbitrary display data, 36
0 is an LCD controller, 361 is a RAM for storing double-sided display data, and 362 is an LCD unit.

The operation unit is handled as one unit, and is connected to the copier controller via a serial interface to exchange data. The display unit microprocessor 355 controls the state of input keys, checks, and the display contents of LEDs and LCDs while performing data communication with the copier controller.

The LCD is composed of full dots and has a special L
The data stored in the RAM 361 is displayed by the CD controller 360. Fixed character data is stored in the ROM 358 as LCD display data.
It is stored in the RAM 361 corresponding to the cii code.
Also, depending on each system configuration, any necessary display data is stored in the RAM 359 and then displayed.

In the operation section key matrix 353,
The input of each key of the operation unit, the input of the dip switch, and the input from the digitizer connected to the switching lever 317 shown in FIG. 26 are included.

FIG. 31 is a flowchart showing the flow of a transmission image signal, and FIG. 32 is a flowchart showing the flow of a reception image signal. In these figures, 3 is the light source described above,
24 is a polygon mirror, and 40 is a photosensitive drum.

FIG. 33 is a block diagram showing a signal flow in the fax interface board. This fax interface board performs the following control and processing. As the CPU, 8085A × 2 is used, and has a frame memory 0.78 MB for image processing and a SAF memory 1 MB.

(1) System sequence control of facsimile function (2) Protocol sequence control (3) Processing of image information Image signal conversion of video signal from scanner unit (2-bit serial signal → 8-bit parallel signal) Data compression and reproduction ( MH, MR, EFC) Reduction (B4 size → A4 size) Input / output of data to / from SAF memory, and compression / playback at input / output (MH, raw data) (4) Multi mode, function selection by internal switch, and Selection of Code (5) Control of Network Control Unit Next, the flow of signals during data transmission / reception will be described with reference to FIG.

(1) When data is sent from the scanner unit to the line: A video signal (2-bit serial signal) from the scanner unit is converted into an 8-bit parallel signal and then converted to 256K.
In a frame memory composed of DRAMs.

In fax, the transmission density is 7.7 lines /
mm, 3.85 lines / mm, 50% with scanner
It shrinks, further converts the density and stores it in memory.

In the gate array for image processing, only conversion from A3 size to B4 size and B4 size to A4 size can be performed. When a fax is sent to the destination, the size may be reduced to A4 size. In the case of a document of a size, the video signal is scaled by 84.6% to a B4 size, and then stored in a frame memory.

After that, the data is sequentially taken out from the frame memory to the FCP 1 and the FPC is connected via the serial port.
Send the data to 2.

At this time, if the original is B4 size and the destination fax paper is A4 size, the size is reduced by 84% by the FPC 2 and one frame data is stored in the work RAM.

Data compression for one frame is performed by FC
Between P2 and work RAM2, and the result is
2 to a modem (MODEM), and sends out the modulated data to the line via a network control unit (NCU).

(2) When transmitting after storing in a memory by broadcasting or the like, the video signal from the scanner unit is stored in a temporary frame memory, and then one frame of data is stored in the work RAM 1 via the FCP 1. And FCP1, Work R
The data is compressed between AM1 and the result is stored in the SAF memory.

When transmitting from the SAF memory, SA
The compressed data in the F memory is read out, the data is decompressed between the FCP 1 and the work RAM to restore the original data, sent to the FCP 2 serially, and sent out to the line by the same processing as in (2).

(3) When sending data from the line to the main control board A signal from the line is input to the modem (MODEM) via the network control unit (NCU), demodulated, and sent to the FCP2 via the IOP2.

In FCP2, the signal transmitted after being compressed is decompressed, returned to the original data, and transmitted to FCP1.

In the FCP1, the data is compressed again,
Store in AF memory. Since the compression method differs depending on the type of fax, etc.
When storing the data in the F memory, the data is restored and compressed again in order to adopt the most efficient method.

When a series of reception is completed, the compressed data in the SAF memory is decompressed by FCP1 and transferred to the frame memory.

After moving one page, a print command is sent to the main CPU to prepare for printout.

LSYNC, LGA of IMAZIO 320F
Data is sent out in synchronization with TE, FGATE, WCLK and the like.

At this time, the number of frame memories is 7.7 /
mm, it is doubled (16 lines / mm), and the parallel signal is converted to a serial signal (P → S
Conversion) and send it out.

When shifting from the copy mode to the fax mode, there are the following various cases.

(1) When the operator wants to transmit using a fax (a) Switching to the fax mode by the copy / fax switching lever 317

The case where the operator operates the copy / fax switching lever 317 to pull out the fax display panel and switch the mode.

(B) Copy / fax switch 3
Switch to fax mode by 45.

In this case, there are the following two cases.

[0148] Display panel is Fax Display Panel 3
If it is not 48, the setting required for transmission (for example, ordinary characters, lowercase letters, multi-mode, etc.) cannot be made in this case, so that “FAX No Panel” is displayed on the liquid crystal display 304.

[0149] Display panel is Fax Display Panel 3
If it is 48, there is no problem in this case.

At this time, if there is a document on the platen, the document is discharged when the automatic document feeder (ADF) is used, and if there is a document in the pressure plate mode, a warning is displayed. This includes: a. Prevention of erroneous faxing due to erroneous operation (If you think that you have inserted the original, enter the fax telephone number, and then start the scanner, the wrong original will be sent); b. Prevent forgetting of the manuscript, c. In most cases, the fax original is sent using the ADF. Therefore, if the original taken in the platen mode at the time of copying remains and the fax original is sent by the ADF, both originals are damaged.

In the present embodiment, the image formation of the presence or absence of the original is not performed by the input of the CCD. 1. When a print switch is pressed to perform a pre-scan for detecting a document size; 2. When the print switch is pressed to make a copy, When a start switch (print switch) is pressed to send a document during faxing, it is determined that there is a document under the pressure plate at a time, and it is determined that there is no document under the pressure plate by lifting the ADF.

(2) When the fax control board completes reception and prints out.

In this case, since the mode is shifted to the fax mode for printing out, when the printing of the fax is completed, the mode is immediately returned to the original mode.

(A) Standby mode (no operation for more than 30 seconds) → fax mode (printout) (b) Preheating mode or fax mode (printout) → preheating mode.

(C) Main switch off mode → fax mode (printout) → main switch off mode.

Normally, when used as a copy, the input mode and display from the operation unit are performed, image data read by the scanner is given as a signal to the LD through the main control board, and the copy is performed under the control of the main CPU. . At this time, the fax section has no influence on the copying operation. However, fax control (system control, protocol and image processing, etc.) can operate independently, so if data is sent from a telephone line,
The data can be received even during copying, and the received data is stored in the frame memory. The received data is output from the facsimile control board to the main control board when the copying operation has not been performed for a fixed time or more (for 30 seconds or more in this embodiment), and the received data is printed out.

FIG. 30 is a circuit diagram for changing the input of image data from the scanner to the fax interface board when printing out from the fax interface.

The FPRI signal is turned on when a print start signal is sent from the fax interface, and turned off when a print stop signal is received from the sequence control CPU.

When the operation section is switched to the facsimile mode by the copy / fax switching lever or the copy / fax switching switch, the facsimile section controls the sequence in the operation section, the scanner section and the plotter section. The main control CPU at this time: Setting of fax initial display (operation section) when switching from copy mode to fax mode,. Check the entire system for errors (serial error, serviceman call, etc.). When receiving a fax, the image data from the fax interface is put into the main control, and the image data input is switched to print out. All serial data from the operation unit, the scanner unit, and the sequence unit are supplied to the facsimile system control CPU through the main control CPU.

As described above, since the main control in the copy mode has nothing to do with the facsimile control, the copy / fax switching lever 317 and the copy / fax
The fax switch 345 is removed, and the fax control unit (communication circuit board 90, receiver 91, network control unit 108, modem 117, fax interface board 118, etc. shown in FIGS. 9 and 10)
By removing, it becomes a copy machine. If a copy machine is delivered to a user and the user subsequently requests that a fax function be added, simply adding a changeover lever 317, a changeover switch 345, and a fax control unit will enable copying and faxing. It can be a composite device.

Next, a fax-only counter will be described. When used as a composite device for copying and faxing, the fax receiving counter 8 is placed at the position shown in FIG.
9 are provided.

The copy output after receiving the fax is output irrespective of the necessity or unnecessary of the user who owns the device. Therefore, if only a copy counter is provided, when a user selects a system (performance charge system) that pays a certain fee for one copy, the number of received faxes is added to the normal number of copies. This causes inconvenience. In particular, when using a key counter (including a key card) to count the number of copies for each department, if the fax reception counter 89 is not provided, the count of only the printout of the fax will not match, thereby causing confusion.

For this reason, the total counter 8
If the fax reception counter 89 is provided separately from the counter 8, the above-mentioned inconvenience is solved.

As described above, the present invention has the following various features.

(1) In the copying machine / fax composite apparatus, when no operation is performed in the copy mode for a predetermined time, the fax is printed out when reception of the fax is completed. If no operation is performed during printout, the mode is shifted to the copy mode at the end of printing.

(2) When reception of a fax is completed during preheating, the fax mode is set and printing is performed. If no operation is performed during the printout, the mode is shifted to the preheating mode at the end of printing.

(3) Key counter (key card, etc.)
Even if is not set, the mode is shifted to the fax mode, and the printout can be performed. When shifting to the fax mode, the key counter display is turned off.

(4) In an apparatus using a sorter,
Paper printed in the fax mode is discharged to the interrupt tray. The used tray is used at the time of interruption in the copy mode.

If the sorter has two bins, one of the two bins is a copy-only tray and the other is a fax-only tray.

(5) A counter is provided in addition to the total counter. When this counter is combined with a facsimile, it operates only as a paper passing counter in the facsimile mode. If the counter is a copying machine alone, it operates as a copy-only counter.

(6) An input mechanism for switching the input pad surface using a sliding panel for displaying keys for fax and copy. A switch mechanism is built in the input mechanism, and either a fax / copy switch or one of the above-mentioned panels is provided. Enables switching between copy and fax modes.

When the switch is switched by the changeover switch, a warning is displayed if the slide panel does not become a facsimile. Further, the mode of the copy is saved when shifting from the copy mode to the fax mode, and the saved copy mode is displayed when shifting from the fax mode to the copy mode.

(7) When shifting from the copy mode to the facsimile mode, if there is a document on the platen when using the ADF, the document is discharged. When the ADF is not used, a warning is displayed.

The mode at the time of the initial can be selected as copy or fax. If the device is not operated for a certain period of time, the initial mode is set.

(8) Even when the key counter (key card) is not set, the mode can be shifted to the fax mode by a switch or a panel. Further, in the fax mode, the key counter display disappears and transmission becomes possible.

By appropriately setting the operation mode of the multifunction device as described above, the user can easily operate the complicated multifunction device.

[0177]

According to the first aspect of the present invention, as described above, function switching means for switching between the copying function and the fax function,
A document table on which a document is placed at a document reading position, document detection means for detecting a document placed on the document table, automatic document feed means for automatically feeding the document, and automatic document feed means for the document And a determination means for determining whether or not a document has been placed using the function switching means.When the function switching means switches from the copying function to the fax function or from the facsimile function to the copying function, the document detection means When a document is detected and the determination means determines that the document is placed by the automatic document feeder, the document is automatically discharged by the automatic document feeder.

As described above, according to the second aspect of the present invention, the function switching means for switching between the copying function and the facsimile function, the start switch for starting the copying or facsimile transmission, and the placing of the document at the document reading position. A document placing table to be pressed, document pressing means for pressing a document placed on the document placing table, open / close detecting means for detecting opening / closing of the document pressing means, and detecting a document placed on the document placing table A document detection means for determining whether or not a document remains on the document table when the open / close detection means detects that the document pressing means is not opened after the start switch is pressed; Means, when the function switching means is switched from the copying function to the fax function or from the fax function to the copying function, the document is detected by the document detecting means. Issued, and when the document remaining is determined by the original residual determining means is characterized in further comprising an alarm means for warning.

As described above, according to the present invention, if a document remains before it is used as a fax, the document is automatically ejected or an alarm is issued. This prevents both originals from being damaged or a copy original from being erroneously transmitted, thereby providing a highly reliable copying apparatus.

[Brief description of the drawings]

FIG. 1 is a block diagram of a copying machine according to an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of the copying machine.

FIG. 3 is a plan view of a writing unit of the copying machine.

FIG. 4 is a block diagram of a printer unit of the copying machine.

FIG. 5 is a block diagram of a printer unit of the copying machine.

FIG. 6 is a block diagram of an image scanner unit of the copying machine.

FIG. 7 is a block diagram of a fax unit of the copying machine.

FIG. 8 is a block diagram of a power supply unit of the copying machine.

FIG. 9 is a component layout view as viewed from the front of the copying machine.

FIG. 10 is a component layout view as viewed from the rear side of the copying machine.

FIG. 11 is a power supply circuit diagram of the copying machine.

FIG. 12 is a DC power supply circuit diagram of the copying machine.

FIG. 13 is a flowchart of selecting a facsimile and copy mode using a key.

FIG. 14 is a flowchart of selecting a fax and copy mode using a pad.

FIG. 15 is a flowchart of a copy and fax mode reset.

FIG. 16 is a flowchart of a key counter display.

FIG. 17 is a flowchart of counter control.

FIG. 18 is a flowchart of sorter control.

FIG. 19 is a flowchart of fax reception control in a copy mode.

FIG. 20 is a flowchart of the fax reception control during the preheating mode.

FIG. 21 is a flowchart after a fax print is completed.

FIG. 22 is a flowchart of a power control method.

FIG. 23 is a flowchart of fax printout.

FIG. 24 is a plan view of an operation panel when used as a copying machine.

FIG. 25 is a plan view of an operation panel when used as a multifunction device.

FIG. 26 is a cross-sectional view of the display panel switching mechanism showing a state where the switching lever is on the copy side.

FIG. 27 is a cross-sectional view of the display panel switching mechanism showing a state during switching.

FIG. 28 is a cross-sectional view of the display panel switching mechanism showing a state where the switching lever is on the fax side.

FIG. 29 is a control block diagram of a display panel unit.

FIG. 30 is a circuit diagram for changing input of image data from a scanner to a fax interface board.

FIG. 31 is a flowchart showing the flow of a transmission image signal.

FIG. 32 is a flowchart showing the flow of a received image signal.

FIG. 33 is a block diagram showing a signal flow in the fax interface board. 81 Power supply unit 82 Operation unit 87 Door switch 88 Total counter 89 Fax reception counter 90 Communication circuit board 91 Handset 92 Main control board 111 Bin 117 Modem 118 Fax interface board 317 Copy / Fax switching lever 345 Copy / Fax switching switch 347 Copy display panel 348 Fax display panel A Scanner section B Operation section C Plotter section D Fax section SW1 Sub-switch SW2 Main switch

Claims (2)

(57) [Claims] 1. A function switching means having a copying function and a facsimile function, for switching between the copying function and the facsimile function, a document table on which a document is placed at a document reading position, and a document table placed on the document table. Original detecting means for detecting the originals, automatic document feeding means for automatically feeding the originals, and determining means for determining whether or not the originals have been placed using the automatic document feeding means, A fax function from a copy function by the function switching means,
Alternatively, when switching from the fax function to the copy function, if the original is detected by the original detecting means and if the determining means determines that the original is placed by the automatic document feeding means, the automatic original A copying apparatus characterized in that a document is automatically discharged by a feeding means. 2. A function switching means having a copying function and a facsimile function, switching between the copying function and the facsimile function, a start switch for starting copying or facsimile transmission, and placing a document at a document reading position. A document placing table, document pressing means for pressing a document placed on the document placing table, open / close detecting means for detecting opening and closing of the document pressing means, and detecting a document placed on the document placing table Document detection means; Document remaining determination means for determining that a document remains on the document table when the opening / closing detection means detects that the document pressing means is not opened after the start switch is pressed. When the function switching means is switched from the copying function to the fax function or from the facsimile function to the copying function, Document is detected and copying apparatus when the document remaining is determined by the original residual determining means, characterized in that it comprises an alarm means for warning.