JP3162674B2 - Image forming device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus such as a copying machine.
In particular, vertical magnification and horizontal magnification are independent
Image forming apparatus having an independent zoom mode that can be set
I do. [0002] 2. Description of the Related Art In an image forming apparatus such as a copying machine, one type of device is known.
In general, variable-magnification copying can be performed on original images.
Features are provided. [0003] SUMMARY OF THE INVENTION However, the conventional
In a copying machine, what kind of data
It's hard to tell if input is required for
However, the operation is complicated and the user may be confused.
As a result, there is a problem that operability is reduced. [0004] The present invention has been made in view of the above.
To provide an image forming apparatus with improved operability
With the goal. [0005] To achieve the above object, the present invention provides
Such an image forming apparatus includes:Vertical and horizontal respectively
Different magnificationImage type with configurable independent scaling mode
In the independent variable magnification mode,VerticallyDirection magnification
Display means for simultaneously displaying the two
Increase or decrease rate at predetermined intervalsZoom key
And in the independent magnification mode,Zoom keyIs operated
Clears independent zoom modeDisplayed on the display means.
Delete the vertical and horizontal magnificationsThe German
The vertical magnification set in the vertical zoom mode or
Is the horizontal magnificationEitherUp or down based on
LetWith only one magnification on the display means
DisplayAnd control means. According to a second aspect of the present invention, there is provided an image forming apparatus comprising:
In addition, whether to use vertical magnification or horizontal magnification
Is provided. According to a third aspect of the present invention, there is provided an image forming apparatus comprising:
Different magnifications in the vertical and horizontal directionsConfigurable
An image forming apparatus having an independent magnification mode,
In the variable magnification modeVerticallyDirection magnification and lateral magnification
Display means for simultaneous display and increase the magnification at predetermined intervals
Or downZoom keyAnd the above independent zoom mode
AboveZoom keyIs operatedAnd verticalDirection magnification and sideways
Direction magnification at the same timeWith the same step widthUp or down
Control means for causing [0008] DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an image forming apparatus according to the present invention will be described.
Embodiments will be described in detail with reference to the accompanying drawings.
You. FIG. 1 shows a copying machine main body according to the present invention.
(I), ADF (II), sorter (III), double-sided inversion
Unit (IV), consisting of four units
An embodiment of the digital copier shown below.
Each part will be described. (Scanner section) First, the scanner section
explain. The lighting device includes lighting devices 1 and 3 and a first mirror 2.
The first scanner moves at a constant speed, and the second scanner moves at half the speed.
A second scanner having mirrors 4 and 5 that move following one scanner
The original on the contact glass 9 is scanned by the canner, and
Is reflected on the lens 7 and formed on the one-dimensional solid-state imaging device 8.
Image. The illumination device of the first scanner is a lamp 3, a reflector 1
Consists of As the lamp 3, a fluorescent lamp, a halogen lamp or the like is used.
Used, but the reason is that the wavelength is stable and the life is long.
For this reason, fluorescent lamps are generally used. Embodiment
Has a reflector on one lamp, but two or more lamps
In some cases, a pump is used. Lighting of fluorescent lamp is solid-state image sensor
Since child 8 has a fixed sampling clock,
If it is not lit at a higher frequency than this, the image will be adversely affected.
You. A CCD is used for the solid-state imaging device 8.
General. The image signal read by the solid-state imaging device 8 is
Since it is a analog value, it is A / D converted and the image processing substrate 1
Various image processing (binarization, gradation processing, scaling processing,
Editing etc.), and the digital signal as a set of spots
Can be turned into an issue. In this embodiment, in order to obtain color image information,
Is required in the optical path from the document to the solid-state image sensor 8
Take out and put in the filter 6 that transmits only color information,
The document is scanned accordingly, and the
Making various copies by using functions such as double transfer and double-sided
To achieve. (Write Unit) Next, the write unit will be described.
Will be explained. The image information after image processing is sent to the optical writing unit.
In the form of a set of light spots in a raster scan of laser light.
It is written on the optical drum 40. The laser light source is He-
A Ne laser is used. He-Ne laser has a wavelength of 6
33mm, which matches well with the sensitivity of conventional photocopier photoconductors
The laser itself is very expensive,
However, there is a drawback that the device becomes complicated because direct modulation is not possible.
Was. In recent years, the sensitivity of photoconductors in the long wavelength region has been increased.
Inexpensive and directly modulated semiconductor lasers will be used
Became. In this embodiment, a semiconductor laser is used.
are doing. FIG. 2 shows a plan view of the writing unit. The laser light emitted from the semiconductor laser 20 is
It is changed into a parallel light beam by the collimating lens 21 and the aperture
The light is shaped into a light beam of a certain shape by the cha 32. Shaped
Beam in the sub-scanning direction by the first cylinder lens 22
Is incident on the polygon mirror 24 in a compressed form. The polygon mirror 24 has an accurate polygonal shape.
At a constant speed in a certain direction by the polygon motor 25
It is spinning. The rotation speed is the speed of the photoconductor and the writing density
And the number of faces. The laser light incident on the polygon mirror 24 is
The reflected light is deflected by the rotation of the mirror. Deflected
The laser light enters the fθ lenses 26a, 26b and 26c. f
The θ lenses 26a, 26b and 26c are scanning light beams having a constant angular velocity
On the photoreceptor,
It forms an image and has a tilt correction function. The light after passing through the fθ lenses 26a, 26b, 26c is
Synchronous detection sensor 3 by synchronous detection mirror 29 outside image area
0, and a synchronization signal for generating a cue signal in the main scanning direction is
After a certain period of time, the image data is output for one line.
The following is repeated to form one image.
Will be. (Photoconductor) Next, the photoconductor will be described.
I will tell. The photoreceptor 40 has a drum shape and is exposed on the surface.
Layer has been applied. 780mm of semiconductor laser
Organic photoconductor (OPC) as a photoconductor sensitive to wavelength,
Although α-Si, Se-Te, etc. are known, the present embodiment
Uses an organic photoreceptor. Generally, in the case of laser writing, light is applied to the image area.
N / P process to apply light and P / P to apply light to the background
There is an N / P process in this embodiment.
You. The charging charger 41 has a grid on the photoconductor side.
The surface of photoreceptor 40 by scorotron method with
(-) Charges, illuminates the image area with laser light and drops the potential
To Then, the background portion of the photoconductor 40 becomes −750 to −8.
An electrostatic latent image of about 00 V and an image portion of about -50 V is formed. this
To the developing roller by the developing device 42a or 42b.
A bias voltage of -600 V is applied, and the
And visualize it. The apparatus of the present embodiment has two developing units.
ing. In the case of a single black color, the auxiliary developing unit 42b and toner supply
What is necessary is just to assume what removed the container 43b. Two developing units
In this embodiment, the toner for the main developing device 42a is
Black toner is supplied to the replenishing device 43a, and toner is supplied to the sub developing device 42b.
-By putting the color toner into the replenisher 43b, 1
During development of a color, change the position of the main pole of the developer of another color, etc.
Selectively develop. This development is switched by the filter 6 of the scanner.
Color information reading, multiple transfer of paper transport system, both sides
A wide variety of color copies and color
-Editing is possible. Development of three or more colors around the photoreceptor
How to arrange three or more developing units
There is a revolver method of switching and switching. Images visualized by the developing units 42a and 42b
Is the back of the paper on the paper surface synchronized with the photoconductor 40?
Charge (+) by the transfer charger 44
It is transcribed. The transferred paper is transferred to the transfer charger 44
AC static electricity is removed by the physically held separation charger 45
And is separated from the photoconductor. The toner remaining on the photoreceptor without being transferred to paper is
Scraped off the photoreceptor by the cleaning blade 47
And collected in the attached tank 48. Further remains on the photoconductor
The pattern of the applied potential is illuminated by the static elimination lamp 49.
Will be erased. Immediately after the development is performed, the photo sensor 50
Is provided. Photo sensor is light receiving element and light emitting element
And the reflection density of the photoreceptor surface
You. This is a constant pattern (black or net)
Dot pattern) corresponding to the photo sensor reading position
Reflection of the pattern part after writing at the position and developing it
From the ratio of the reflectance of the photoreceptor other than the pattern area
Judgment of lightness is made, and if it is light, a toner supply signal is issued. Also,
Taking advantage of the fact that the density does not increase even after replenishment,
A foot can also be detected. (Sheet Feeding Unit) Next, the sheet feeding unit will be described.
You. In this embodiment, a plurality of cassettes 60a, 60b, 6
0c, and transfer the paper once transferred through the paper feeding loop 72.
Then, both sides or refeeding is possible. Cassette
When the start button is pressed when the selected cassette is
The paper feed rollers 61a, 61b, 61c that were in
It is swiftly sent until it hits the registration roller 62. Regis
The roller 62 is stopped at this time.
The rotation is started by taking a picture, and the paper is fed to the photoconductor. Exposure
The image is transferred by the body part, suction-conveyed by the separation conveyance section 63, and
Fixing roller composed of a pair of heat roller 64 and pressure roller 65
Then, the toner on the surface is fixed by the heating unit. During normal copying, the switching claw 67 sorts the sorter.
(IV) The sheet is guided to the side discharge port. When multiple copies are made,
It is guided downward by the replacement claw 67, and is switched by the switching claws 68 and 69.
Around the lower loop 72 without changing direction,
Is guided to the registration roller 62. In the case of two-sided copying, the case where the copying is performed only by the machine
Duplex unit may be used, here only the former
State. The paper guided downward by the switching claw 67 is
It is guided downward, and the next switching claw 69 causes the
Is led to the tray 70 and again in the opposite direction by the reversal of the roller 71
Is sent to the loop 72 by switching the switching claw 69.
To the registration roller 62. (ADF) Next, ADF (automatic document feed
The device will be described. The ADF controls documents one by one.
Automatically scans to copy and discharge on tact glass
It is what you do. Document placed on document feeder 100
The document is aligned in the width direction by the side guide 101.
The placed documents are separated one by one by the feed roller 104 and fed.
A predetermined position on the contact glass 9 by the transfer belt 102
Transported and positioned. The specified number of copies have been completed.
Then, the discharge tray 10 is rotated again by the rotation of the transport belt 102.
3 is discharged. The position of the side guide 101 and the feed
Document size detection by counting the
It can be carried out. (Sorter) Next, the sorter is explained.
I will tell. Copy the copy paper output from the copier
Bin order, page by page, or preset bins
This is a device for selectively feeding paper to 111a to 111x.
Is sent by a plurality of rollers
When the copy paper is switched by the pawl near the entrance of each bin
To the selected bin. (Double-sided unit)
explain about. The machine body can only do both sides of each piece
However, by attaching a duplex unit,
It is possible to make copies. Multiple double-sided copies
When taking, the paper guided downward by the discharge roller 66 is further
At 67, it is led to the duplex unit (IV). Duplex unit
The paper entering (IV) is output to the tray 123 by the discharge roller 120.
Integrated on top. At that time, feed roller 121, side alignment
The guides 122 can be aligned vertically and horizontally. Collection on tray
Stacked copy paper is back-side copied by refeed roller 124
Sometimes it is re-fed. At this time, a direct loop 72 is formed by the claws 69.
And sent to the registration roller 62. (Electrical Control Unit) Next, the electrical control unit will be described.
Will be explained. 3 and 4 show schematic diagrams of the electric circuit of the printer unit.
Is shown. Figures 3 and 4 show one block diagram divided.
In some cases, there is an overlapping part in the CPU (a) part.
Connect both sides at the part. The control unit of the printer is
(A) shows a sequence-related relationship.
(B) controls the operation,
And a serial interface between the two CPUs.
(RS232C). First, the sequence control will be described.
The sequence controls the timing of paper transport.
Paper size sensor, paper ejection detection, registration detection, etc.
Sensors for paper transport, duplex unit, high-voltage power supply unit
Drivers, sorters for relays, solenoids, motors, etc.
Unit and laser beam scanner unit are connected
Have been. In the case of the sensor, it is attached to the sheet cassette.
Detects the size and orientation of the recording sheet and responds to the detection result.
Paper size sensor that outputs the same electrical signal
Sensor for paper conveyance, such as
Sensors that detect the presence of supplies such as
Detects machine errors such as power supply, door open, fuse blown
And the like are input. In the duplex unit, a mode for adjusting the width of the paper is set.
Solenoid for changing the feeder, paper feed clutch, and transport path
Solenoi that raises and lowers the roller to move the paper to the tip
Sensor, paper presence / absence sensor, side fence for paper width alignment
Home position sensor, paper transport sensor, etc.
There is. The high-voltage power supply unit is a charger, a transfer
Charger, separation charger, developing bias electrode
A predetermined high voltage is applied. Driver feed
Clutch, resist clutch, counter, motor, toner
-Supply solenoid, power relay, fixing heater, etc.
You. The sorter unit is a serial interface
Are connected by signals from the sequence.
The paper is conveyed at a predetermined timing and discharged to each bin.
ing. Analog input includes fixing temperature and photo sensor input.
Power, laser diode monitor input, laser diode
Reference voltage is input. The fixing temperature is determined from the thermistor in the fixing section.
On and off so that the temperature of the fixing
Off. Photo sensor input is made at a predetermined timing
Photo sensor pattern
Force to detect the density of the pattern,
Turns on / off the supply clutch to control toner concentration.
You. Adjust to keep laser diode power constant
AD converter and CPU analog input
Is used. This is a preset reference
Pressure (this voltage is set so that the laser diode becomes 3 mW).
Set. ) Shows the monitor when the laser diode is turned on.
Are controlled so that the power supply voltages match. In the image control circuit, the masking and trimming
Timing signals such as
Signal and send video signal to laser diode
ing. The gate array receives a 2-bit data from the scanner.
The image signal that is continuously transmitted by the
Synchronize with the synchronization signal PMSYNC from the unit,
1 bit synchronized with the image writing position signal RGATE
The signal is converted into a serial signal and output to the image control circuit. Next, the control of the operation relation will be described.
Will be explained. The main CPU has multiple serial ports and
Control the render IC. For multiple serial ports,
Sequence control CPU, operation unit, scanner,
, An interface unit, etc. are connected. In the operation section, key input by an operator and a copying machine
Display that displays the status of the
Serial transmission to the CPU and serial transmission from the main CPU
The display is turned on upon reception. What is a scanner?
Serially transmits and receives information about
Fax and interface unit.
Exchanges the information content specified. Calendar IC is day
Date and time.
Can be turned on and off. Next, the configuration of the image scanner unit is shown in FIG.
Show. The electric power output from the CCD image sensor 407
The air signal, that is, the analog signal is amplified by the signal processing circuit 451.
Is converted to a digital multi-level signal by the A / D converter 452.
Is converted. This signal is output to the shading correction circuit 453.
The signal is corrected by the
It is. The signal separation circuit 454 processes input image information
Into a binary image component such as a character and a halftone image component.
Let go. The binary image component is marked on the binarization processing circuit 456.
And the halftone image component is applied to the dither processing circuit 455.
Is done. In the binarization processing circuit 456, the input multi-valued data
Data into binary data according to a fixed threshold value
Replace. In the dither processing circuit 455, the
Judgment of input data by various predetermined thresholds
Then, binary data including halftone information is output. Signal synthesis
In the circuit 457, the binary signal output from the binarization circuit 456 is
The binary signal output from the dither processing circuit 455 is combined.
It outputs signals DATA1 and DATA2. The scanner control circuit 460 is a printer control unit.
From the lamp control circuit 458,
Control circuit 459, electric scaling circuit 461, and scanner
The drive motor 465 is controlled. The lamp control circuit 458
Exposure lamp according to instruction from scanner control circuit 460
On / off of 402 and light amount control are performed. The drive shaft of the scanner drive motor 465 is
And a position encoder
462 detects the reference position of the sub-scanning drive mechanism. The electric zooming circuit 461 is the scanner control circuit 4
60 in accordance with the main scan side magnification data set by
The dithered image data and the binarized image data.
An electric scaling process is performed on the image data. The timing control circuit 459 controls the scanner.
Various signals are generated according to an instruction from the circuit 460.
You. That is, when reading is started, the CCD image sensor
Shift register for one line of data for -407
Transfer signal and data of the shift register
Give shift clock pulse to output one bit at a time,
Pixel synchronization clock pulse for playback control unit
CLK, main scanning synchronization pulse LSYNC and main scanning enabled
The period signal LGATE is output. This pixel synchronization clock pulse CLK is CC
Shift clock pulse given to D image sensor 407
The signal is almost the same as the signal. Also, the main scanning synchronization pulse LS
YNC is the main output from the beam sensor of the image writing unit.
The signal is substantially the same as the scan synchronization signal PMSYNC,
Output is prohibited when image reading is not being performed. Main run
The inspection valid period signal LGATE is output data DATA1 and output data DATA1.
And where data2 is considered valid data
It becomes high level H by ming. In this example, the CCD
Image sensor 407 has 4800 bits per line
Output valid data. Also, the output data DATA1
Is the data of each odd-numbered pixel, and DATA2 is the even number
This is the data of each pixel. The scanner control circuit 460 is a printer control unit.
, The exposure lamp 402 is turned on
Then, the scanner drive motor 465 starts to be driven,
The CCD image sensor by controlling the
Start reading 407. Also, the sub-scanning valid period signal
Set FGATE to high level H. This signal FGA
TE is the maximum reading length in the sub-scanning direction after being set to H
Operate the size (in this example, A3 size in the longitudinal direction)
Becomes L when the time required for the time elapses. Hereinafter, control in the copying machine mode will be described.
explain. FIG. 6 is a flowchart for setting the automatic density.
You. When the automatic density setting switch is pressed, the edit mode
Mode (outline and marker designation)
If not, accept the key and turn on the buzzer.
Manual display is on when the automatic concentration mode is already set.
, Just turn off the automatic density LED display
However, if the manual display is turned off, the manual
To the notch 4 (median value of density)
To When automatic density mode is off, manual L
Turn off the ED display and turn on the automatic density. FIG. 7 is a flowchart for setting the manual density.
It is. In the edit mode, the manual density setting
No fixed switch is accepted. "Light" switch is pressed
When the density display is already on,
Above or above as shown, the lighter the concentration
Move the display one by one, and if the density display is off (above
Left) lights the notch 4 (center). Koi Sui
The same applies when the switch is pressed.
When the display is shifted to the merge direction and the density display is off
Turns on the notch 4 (center). [0055] [Table 1] As shown here, even in the automatic density mode,
The notch can be changed manually and the desired copy
Can be obtained. FIGS. 8 to 13 show the setting of the edit mode.
It is a flowchart. When the switch is pressed, the buzzer
Sounds. If you are already in that mode,
Turn off mode and save when entering edit mode
Set the concentration data. If you are not in mode
Turn on mode and enter edit mode for the first time
Saves the density data before entering the
Reset the optimal density with the code (notch with automatic density)
3). This is the case where the marker is specified,
In order not to appear in the copy. Then enter
If the set mode is the whole mode,
It turns off when it is in front, and the entered mode is specified by the marker
In the case of, it turns off if the whole mode has been entered before. This
If you want to invert it with a marker,
It is not necessary to perform the reverse operation,
In the case of a
That's why. FIG. 14 is a flow chart of the same magnification mode.
You. When the same-size switch is turned on, it is displayed with independent size scaling.
The MAX and MIN displays are turned off. AM at the same time
In the S mode, the AMS mode is turned off and the APS
If the message confirmation display is on, it is turned off. Already 1x mode
If it is, the buzzer will not be turned on. Independent, dimensional zoom mode
Is cleared and the dimensional magnification data (original length and width, copy
Vertical and horizontal dimensions) are erased. LCD first line
"100%" is displayed in the in. FIG. 15 is a flowchart of the enlargement mode.
You. If the shrink switch is turned on at the same time,
Not performed. Perform AMS and APS processing in the same way as
Turn on the buzzer. Magnification is 1x, reduced, vertical, horizontal
If the zoom is 400%, set 115%, and
The other is a magnification one level higher than the displayed fixed magnification.
Independent and dimensional scaling modes are cleared and dimensional scaling data is cleared.
Is erased. Double the magnification on the first line of LCD
The rate (for example, “115%”) is displayed. FIG. 16 is a flowchart of the reduction mode.
You. In this case, the magnification is the same magnification, vertical and horizontal independent, zoom
If the value is 25%, set 93%.
The magnification is one below the fixed magnification shown. (Other
Is the same as enlargement) FIGS. 17 and 18 show the flow in the zoom mode.
It is a chart. The zoom keys are for enlargement, reduction,
If it is pressed, it will not be accepted. Also, for the first time switch
When it is turned on, it performs AMS and APS processing and changes the size
Clear the mode and clear the scaling data. 5
Turn on the 00msec flag and buzzer if the magnification is 25%
Does not ring. When not in the independent magnification mode, change the magnification to-
1%, and if there is a fixed magnification corresponding to that magnification,
Turn on the fixed magnification display according to. Liquid crystal display
With the magnification (eg "91%") on the first line
You. In this case, there are the following three display methods. [0063] (Equation 1) Is not in the independent zoom mode.
This is how to zoom down. Is independent magnification
When the zoom key is pressed during zooming, the zoom is
Down, reset (clear) independent zoom mode,
This is usually a method of zooming. Is zoom based on horizontal magnification
This is a method of downing (independent zoom mode is cleared). Although not shown in this flow, an independent variable
In the 2x mode, zoom down simultaneously
There is a method. (Equation 2) In this method, independent magnification and dimensional magnification are used.
I want to change the magnification slightly after setting the ratio and copying
Very effective in cases. This independent zooming method
,,,,,,,,
And stored in a memory backup or the like. In the independent magnification setting mode, the independent magnification is set.
Down the data. This is set below 25%
(Independent zoom setting can be changed with the numeric keypad and zoom key.)
Magnification data can be set), set 25%,
If it is 00% or more, set 400%. (Equation 3) When the zoom key is kept pressed, the first time
Turns on the buzzer and the first zoom down is 500ms
ec, the buzzer is turned off for the second and subsequent times, and 200 ms
ec to zoom down. FIGS. 19 and 20 show the flow of the zoom + mode.
It is a chart. This is basically the same idea as zoom
It is. FIG. 21 is a flowchart of independent and dimensional scaling.
It is. This is either an independent or dimensional scaling switch.
Routine to check when pressed, at the same time
Do not accept when double, enlarge, reduce, or zoom is pressed.
No. FIG. 22 is a flowchart of the independent horizontal mode.
is there. This is because the dimension changes when the independent horizontal switch is pressed.
Clear the magnification mode and dimensional magnification data. Already independent
In the magnification setting mode, check the magnification and change the magnification independently.
Set 400% when data is larger than 400%
And turn on the MAX display (warning display)
At the time, set 25% and display MIN (warning display)
Is turned on, the independent magnification is set to the horizontal magnification, and the LCD
Vertical and horizontal display on the first line, and the second LCD
Display the work area on the line. (Equation 4)When the mode is not the independent horizontal scaling mode, the mode
When the mode is set and the mode was previously set to the independent vertical scaling
Sets the independent magnification to the vertical magnification and then sets the independent horizontal scaling
Enter mode. (Equation 5) Is changed from the normal magnification to the independent horizontal magnification setting mode.
When entering (normally only one magnification is displayed during zooming,
At the time of zooming, the vertical magnification and the horizontal magnification are displayed simultaneously)
When entering the independent horizontal scaling mode from the scaling, the
When entering the independent horizontal scaling setting mode from the scaling setting mode
It is an example. As described above, in the independent magnification setting mode, the current
Set a work area to set a magnification other than the current aspect ratio.
In addition, the magnification to be set is blinking. this is
Compare the current magnification with the magnification you will enter
And flash the input magnification data.
It is very easy to understand. Also, zoom
You can enter the rate in addition to directly using the numeric keypad.
Input can be made using the
It is easy to use. The independent magnification data of the work area is displayed vertically or
The timing for setting the horizontal magnification is   When the same key is pressed (data in independent horizontal scaling setting mode)
The horizontal zoom key (horizontal magnification set key) again.
-) Is pressed),   When another independent scaling key is pressed (independent vertical scaling setting mode)
Key to set the data, and use the independent horizontal scaling key (horizontal magnification setting).
Key), vertical data is set),   When you press the # (Enter) key,   When the print switch (start key) is pressed, It is. FIG. 23 is a flowchart of the independent vertical mode.
is there. This is the same idea as Independent Yoko. FIGS. 24 to 28 show the flow of the dimensional scaling mode.
It is a chart. When the Dimension Original landscape switch is pressed,
The vertical zoom mode is cleared. Already original landscape input mode
In the case of, the horizontal size of both copy and original
Check if it has been entered, and if entered, calculate the horizontal magnification.
The size of both the copy and the original are entered.
Check if it is entered, and if it is entered,
Is calculated and set. After that, LCD first line
Output the vertical and horizontal magnifications (both vertical and horizontal sizes are included).
Since the magnification cannot be calculated for those that do not exist,
Display magnification). Example in case of vertical and horizontal input Manuscript 98mm length 100mm width Copy length 50mm width 120mm At this time Vertical magnification 51% Horizontal magnification 120% Becomes When Both Sides Are Input
Example (assuming it was 100% before) Manuscript 98mm length 100mm width Copy length and width 120mm At this time Vertical magnification 100% Horizontal magnification 120% Becomes If the mode is not the dimension original landscape input mode, the mode
Set the size and if size data remains, size
Publish data, if not_---And flash.   Example when no size data has been entered (Equation 6) Here, we show the horizontal size of the original_---Is flashing
You. The previously input size data remains
Example (Equation 7) Here, 100 indicating the horizontal size of the document is blinking.
You. As shown in the flowchart of FIG.
The magnification calculated from the set size (dimensions)
When the maximum or minimum value of the magnification that can be changed is exceeded
Set the maximum or minimum value as the magnification.
MAX or MIN display, that is, a warning display
U. As described above, the document length, width, copy length, width,
Press one key to display all data.
Always easy to understand. Data has already been entered
If no data, if not entered_---The point
Where the user is now entering data to destroy
You can see at a glance. Also, this dimension
The timing to erase the size data is determined by the zoom keys other than
-When you press only
If you enter each dimension and copy it,
If you want to change the
It is very easy to understand. Timing for calculating the vertical and horizontal magnifications
Is   When you press the same key   When the # key is pressed   When the print switch is pressed It is. [0085] As described above, according to the first aspect,
Clear the independent zoom mode for
Zoom mode without the need for special keystrokes to
Can be switched to, reducing the number of key operations
Or the previously set vertical or horizontal magnification.
Since the zoom mode can be set based on the ratio,
Settings are not wasted, and independent scaling mode
In other cases, there is only one magnification display, so vertical and horizontal
Less annoying than when two magnifications are displayed
The effect is that Further, according to the image forming apparatus of the present invention,
Up / down the magnification based on the vertical magnification
You can select whether to increase the magnification based on the horizontal magnification
Has the effect of improving its operability.
You. Further, in the image forming apparatus according to the third aspect,
Because the vertical magnification and the horizontal magnification can be changed at the same time,
Key when you want to slightly change the magnification set in
There is an effect that the operation can be simplified.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram showing an overall configuration of a digital copying machine according to the present invention. FIG. 2 is a plan view illustrating a configuration of a writing unit. FIG. 3 is a partial block diagram showing a configuration obtained by dividing one block diagram of a circuit of a printer unit into two. FIG. 4 is a partial block diagram showing a configuration in which one block diagram of a circuit of a printer unit is divided into two. FIG. 5 is a block diagram illustrating a circuit configuration of an image scanner unit. FIG. 6 is a flowchart illustrating an operation of setting an automatic density. FIG. 7 is a flowchart illustrating an operation of setting a manual density. FIG. 8 is a flowchart showing an operation of setting an edit mode. FIG. 9 is a flowchart illustrating an operation of setting an edit mode. FIG. 10 is a flowchart showing an operation of setting an edit mode. FIG. 11 is a flowchart illustrating an operation of setting an edit mode. FIG. 12 is a flowchart illustrating an operation of setting an edit mode. FIG. 13 is a flowchart illustrating an operation of setting an edit mode. FIG. 14 is a flowchart showing an operation in the same magnification mode. FIG. 15 is a flowchart illustrating an operation in an enlargement mode. FIG. 16 is a flowchart showing an operation in a reduction mode. FIG. 17 is a flowchart showing an operation in a zoom mode. FIG. 18 is a flowchart illustrating an operation in a zoom mode. FIG. 19 is a flowchart showing an operation in a zoom + mode. FIG. 20 is a flowchart showing an operation in a zoom + mode. FIG. 21 is a flowchart showing independent and dimensional scaling operations. FIG. 22 is a flowchart showing the operation in the independent horizontal mode. FIG. 23 is a flowchart showing an operation in an independent vertical mode. FIG. 24 is a flowchart showing the operation of dimensional scaling. FIG. 25 is a flowchart showing the operation of scaling the size. FIG. 26 is a flowchart showing the operation of scaling the size. FIG. 27 is a flowchart showing the operation of changing the size. FIG. 28 is a flowchart showing the operation of scaling the size. DESCRIPTION OF SYMBOLS 1 Reflector 2 First mirror 3 Lamp 4 Second mirror 5 Third mirror 6 Color filter 7 Lens 8 One-dimensional fixed imaging device 9 Contact glass 10 Image processing board 20 Laser diode 21 Collimating lens 22 First cylinder Lens 23 Soundproof glass 24 Polygon mirror 25 Polygon motor 26a, 26b, 26c fθ lens 27 Mirror 28 Dustproof glass 29 Synchronous detection mirror 30 Synchronous detection sensor 31 Lens holding unit 32 Aperture 40 Photoconductor drum 41 Charger 42a, 42b Developing device 43a, 43b Toner replenisher 44 Transfer charger 45 Separation charger 46 Separation claw 47 Cleaning blade 48 Drain toner tank 49 Static elimination lamp 50 Photosensors 60a, b, c Cassettes 61a, b, c Paper feed rollers 63 Separation and conveyance bell G 64 Heat roller 65 Pressure roller 66 Discharge roller 67 First switching claw 68 Second switching claw 69 Third switching claw 70 Reversing tray 71 Re-feed roller 72 Re-feed guide plate 80 Main motor 81 Fan motor 100 Document tray 101 Document Side Guide Plate 102 Document Conveying Belt 103 Discharge Tray 104 Feed Roller 110 Sorter Motors 111a to 111x Bin 120 Discharge Roller 121 Tip Roller 122 Width Roller 123 Front Tray 124 Refeed Roller

Claims (1)

(57) [Claims] An image forming apparatus having an independent scaling mode in which different magnifications can be set in a vertical direction and a horizontal direction, a display unit for simultaneously displaying two magnifications in a vertical direction and a horizontal direction in the independent scaling mode; A zoom key for raising or lowering at a predetermined interval, and when the zoom key is operated in the independent scaling mode, the independent scaling mode is cleared and the vertical magnification and the horizontal magnification displayed on the display unit are erased, Control means for increasing or decreasing the magnification based on either the vertical magnification or the horizontal magnification set in the independent magnification mode, and displaying only one of the magnifications on the display means. Characteristic image forming apparatus. 2. The image forming apparatus according to claim 1, further comprising a selection unit that selects whether to use a vertical magnification or a horizontal magnification as a reference.