JPH084293B2 - Image processing device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an image processing apparatus such as a copying machine, a facsimile, and a word processor having an operation unit.

[Prior Art] Conventionally, in an image information processing apparatus such as a copying machine, each key or switch has been used as a means for displaying functional information necessary for performing image processing such as magnification and paper size input by key input. I turn on the corresponding LED,
Depending on the setting position state of each key or switch, the setting state of the function corresponding to each key is displayed. However, according to the diversification of image processing functions, as described above, the use of the operation unit in which the keys correspond to the functions one-to-one causes a drawback that the operation unit becomes complicated and the device becomes large. there were. Therefore, in the case of downsizing, it is considered that there is still room for improvement, for example, it takes too much time and effort to perform one image process. On the other hand, while the functions of the image processing apparatus are diversified, as the image processing apparatus becomes popular,
Even if not an expert, there are increasing opportunities to perform the above-mentioned advanced image processing, and there is a possibility that it is difficult to use the image processing apparatus.

[Purpose] In view of the above drawbacks, the present invention derives a scaling factor based on document size information and paper size information when an automatic setting mode for automatically setting a scaling factor is designated, and after the derivation, It is an object of the present invention to provide an image processing device capable of controlling the display so as to display the derived scaling ratio in the display unit displaying the scaling mode.

〔Example〕

 FIG. 1 shows the appearance of a copying apparatus according to the present invention.

This device is basically composed of two units.
A reader A and a printer B. The reader and printer are mechanically and functionally separated so that they can be used independently. The connection is made only by electric cable. The operation unit A-1 is attached to the reader B. Details will be described later.

FIG. 2 shows a structural sectional view of the reader A and the printer B.
The original is placed on the original glass 3 face down, and the placement reference is on the left back side when viewed from the front. The original is the original cover 4
It is pressed down on the original glass. The original is illuminated by the fluorescent lamp 2, and an optical path is formed so that the reflected light is condensed on the surface of the CCD ₁ via the mirrors 5 and 7 and the lens 6. The mirror 7 and the mirror 5 move at a relative speed of 2: 1. This optical unit moves from left to right at a constant speed while applying a PLL with a DC servo motor. This moving speed is 180 mm / sec at the same magnification in the forward path irradiating the original, and 630 mm / s always in the return path.
ec. The resolution in the sub-scanning direction is 16 lines / mm. The document size that can be processed is A5 to A3.

Next, with respect to the main scanning direction, the main scanning width becomes a maximum A4 lateral width of 297 mm depending on the document placing direction. Then, in order to resolve this at 16 Pel / mm, the CCD bit number is 4
Since 752 (= 297 × 16) bits are required, 26
Two 88-bit CCD array sensors were used and they were driven in parallel. Therefore, from the conditions of 16lines / min, 180mm / sec, the main scanning period (= CCD accumulation time) is Becomes CCD transfer speed Becomes

Next, referring to FIG. 2, an overview of the printer placed under the reader will be described. The bit-serial image signal processed by the reader unit is input to the laser scanning optical system unit 25 of the printer. This unit is composed of a semiconductor laser, a collimator lens, a rotating polyhedral mirror, an Fθ lens, and a tilt correction optical system. The image signal from the reader is applied to a semiconductor laser and converted into electric light, and the diverging laser light is converted into parallel light by a collimator lens, which is irradiated on a polygon mirror that rotates at high speed, and the laser light is scanned by the laser light on the photoconductor 8. To do. The rotation speed of this polyhedral mirror is rotated at 2,600 rpm. And the scanning width is about
At 400 mm, the effective image width is 297 mm, which is the A4 horizontal dimension. Therefore, the signal frequency applied to the semiconductor laser at this time is approximately 20 MHz.
z (NRz). The laser light from this unit is a mirror
It is incident on the photoconductor 8 via 24.

The photoconductor 8 is composed of, for example, three layers of a conductive layer, a photosensitive layer and an insulating layer. Therefore, the process components are arranged which allow it to be imaged. 9 is a precharger, 10 is a precharger, 11 is a primary charger, 12 is a secondary charger, 13 is a front exposure lamp, 14 is a developing device, 15 is a paper cassette, 16 is a paper feed roller, 17 is a Paper feed guide, 18 for resist
A roller, 19 is a transfer charger, 20 is a separation roller, 21 is a conveyance guide, 22 is a fixing device, and 23 is a tray. The speed of the photoconductor 8 and the transport system is 180 mm / sec.

 Next, the operation unit A-1 will be described with reference to FIG.

FIG. 6 is an explanatory view of the operation unit. 201 is a normal copy start key, 202 is a warning display group, 203 is a cassette size display group, 204 is a cassette selection stage display, 210 is a cassette stage selection key, 205 is a number display section, and 206 is a magnification display which will be described in detail later. Numeral 209 is a mode key for selecting a magnification change mode, numeral 207 is a group of ten keys, and numeral 208 is a clear and stop key.

Next, a method for enlarging / reducing the original image will be described with reference to FIG. The basic idea of scaling is that the sub-scanning direction is
This is to make the speed of the DC servo motor 37d variable. CPU
Calculates the speed based on the magnification input by the key, calculates the PLL frequency corresponding to the calculated speed, and presets it in the I / O latch (1) 58 before scanning. On the return trip, a fixed value is set, which returns the optical system at high speed. This is CPU
The value stored in the ROM of is set by presetting this I / O latch (1). Therefore, when magnifying twice, move at 1/2 speed compared to the speed (180 mm / sec) at the same magnification,
When reducing to 2, it will move at twice the speed. Main scanning is a method of sampling a CCD serial signal (after A / D conversion) output at a constant frequency at a clock rate according to the magnification. For example, when expanding twice, CC
If sampling is done at twice the D clock rate, 1 bit of source information will be obtained for 1 bit of data, and if it is reduced by 1/2, it will be 1/2 of the CCD clock rate.
If sampling is performed at the clock rate, data obtained by thinning out one bit for two bits of source information can be obtained.
The CPU calculates this clock rate based on the input magnification,
The I / O latch (2) 50 is set before starting the sub-scan. As described above, the CCD has a 2688-bit configuration, but there are 36 dummy bits in it, and the effective bits are
That's 2592 bits. And the driving frequency is
At 7.7419 MHz, the signal line is the φ ₁ clock line 55. The clock for zooming forms a variable frequency by making the frequency oscillated by the VCO 49 synchronized with the PLL 48 based on the same source oscillation as φ ₁ and the value of the I / O latch (2) 50, and φ ₂ .

 Next, document position recognition will be described.

FIG. 4 shows a state in which a document 300 is placed on the platen glass 3 of the reader A. Basically, the mounting position is fixed in this type of device, but there is no problem even if it is placed diagonally as shown in the figure. In this case, the coordinates of four points, where X is the main scanning direction and Y is the sub scanning direction from the reference coordinates SP on the platen.
P ₁ (X ₁ , Y ₁ ), P ₂ (X ₂ , Y ₂ ), P ₃ (X ₃ , Y ₃ ), P ₄ (X ₄ , Y ₄ ) Prescan the system to detect.
Thus, the size and position of the document can be determined. As a result, it is possible to determine the skiyanski stroke during multi-copy and select a desired cassette. Make sure that the image data outside the area where the original is placed will always be black data.
The document cover 4 (FIG. 2) is mirror-finished. In the pre-scan, main scanning and sub-scanning are performed so that the entire glass surface is scanned, and then scanning for printing is subsequently performed. This sub-scanning speed is faster than during printing.

The circuit diagram of FIG. 5 shows the logic for detecting the coordinates. The image data VIDEO binarized by the pre-scan is input to the shift register 301 in units of 8 bits. When 8-bit input is completed, the gate circuit 302 checks whether all 8-bit data are white images, and if Yes, outputs 1 to the signal line. The F / F 304 is set when the first 8-bit white appears after scanning the original. This F / F is VSYNC
It has been reset in advance by (image leading edge signal). After that, the set is released until the next VSYNC comes. F / F304
When is set, the latch F / F 305 is loaded with the value of the main scanning counter 351 (main scanning counter 51 in FIG. 3 or dedicated counter) at that time. This becomes the X coordinate value. Further, the latch 306 is loaded with the value of the sub-scanning counter 352 (the sub-scanning counter 52 in FIG. 3 or a dedicated counter) at that time. This is the Y ₁ coordinate value. Therefore, P ₁ (X ₁ , Y ₁ ) is obtained.

Whenever 1 is output to the signal 303, the latch 307 is loaded with the value from the main scan. This value is immediately stored in latch 308 until the next eight bits enter shift register 301.
When the value from the main scan when the first 8 bits of white appears is loaded into the latch 308, the data of the latch 310 (which is set to "0" at the time of VSYNC) is compared with the comparator 309. It If the data of the latch 308 is larger, the data of the latch 308, that is, the data of the latch 307 is loaded into the latch 310. At this time, the value of the sub-scanning counter is loaded in the latch 311. This operation is processed until the next 8 bits enter the shift register 301. If the data of the latches 308 and 310 is thus obtained for the entire image area, the maximum value in the X direction of the original area remains in the latch 310, and the coordinates in the Y direction at this time remain in the latch 311. This is the P ₂ (X ₂ , Y ₂ ) coordinate.

The F / F 312 is a F / F which is set at the time when the first 8-bit white appears for each main scanning line, is reset by the horizontal synchronizing signal HSYNC, is set at the first 8-bit white, and is held until the next HSYNC. At the time when this F / F312 is set, the value of the main scanning counter is set in the latch 313, and the latch is set until the next HSYNC.
Load it on 314. And latch 315 and comparator 316
Compared in size. The maximum value in the X direction is preset in the latch 315 when VSYNC occurs. If the data in latch 315 is greater than the data in latch 314, signal 317
Becomes active and the latch 314, that is, the data of the latch 313, is loaded into the latch 315. This operation is HSYNC-HSYN
Between C. If the above comparison operation is performed for the entire image area, the minimum value of the document coordinates in the X direction remains in the latch 315. This is X ₃ . Also, the signal line 317
Value is loaded into latch 318 from the subscan. This becomes Y ₃ .

The latches 319 and 320 are loaded with the main-scan counter value and the sub-scan counter value at each time when 8-bit white appears in the entire image area. Therefore, when the pre-scanning of the original is completed, the counter value at the time when the last 8-bit white appears appears in the counter. This is (X ₄ , Y ₄ ).

The above eight latches (306,311,320,318,305,310,315,
319) data line connected to the bus line BUS of CPU, C
The PU will read this data at the end of the previous scan.
And among these data, as shown in FIG.
The areas of X ₃ , X ₂ , Y ₁ , and Y ₄ are determined as the original area.

Next, the above-mentioned scaling mode will be described in detail. The variable magnification mode is a mode in which the operator specifies the same magnification in the main scanning and sub-scanning directions, a mode in which the operator specifies two different magnifications in the main scanning and sub-scanning directions, and the main scanning based on the read document area and paper size. , There is a mode that automatically calculates the same magnification in the sub-scanning direction, and a mode that automatically calculates two different magnifications in the main scanning and sub-scanning directions. In order from the front, we call them U mode, UHP mode, A mode, and AHP mode. To do. (Where U is user selection and A is Auto Selectio
n and H are Horizontal and P is an abbreviation for Perpendicular. ) Further, the magnification in the main scanning direction and M _H, a sub-scanning direction scaling ratio is referred to as a M _P, when M _H and M _P are equal to that represented by M.

The A mode and AHP mode will be described. Both modes are modes in which the area obtained by the above-described automatic recognition shown in FIG. 4 and its description is automatically scaled to a size suitable for the sheet of the cassette. That is, in the A mode, as shown in the flow chart of FIG.
Direction, the ratio of the size of the original in the X and Y directions to the cassette sheet in the X direction in step 2 MP = Py / Δy, MH = Px /
Δx is calculated, and in step 3, the smaller ratio is X,
A common magnification M for Y is set, the RAM is set, and the above-described scaling treatment is performed. Therefore, an auto-variable copy based on one direction of the sheet can be obtained. AHP mode is 7-2
As shown in the drawing, the respective ratios of the document in the X and Y directions with respect to the X and Y directions of the sheet are obtained, and the magnification MH in the X direction and the magnification MP in the Y direction are set independently. Therefore, the original image can be copied to the full sheet.

Figure 7-2 shows the AHP mode flow chart. A
Similar to the mode, in Steps 1 and 2, the ratios MP and MH of the X-direction: Y-direction size of the document to the cassette sheet in the X- and Y-directions, respectively, are obtained, and the process returns to change the magnification accordingly.

Next, the magnification setting procedure will be described with reference to the flow charts of FIGS. 8 and 9.

Variable mode is U mode and magnification is M due to initialization when power is turned on.
Is 100%, and the "U" indicating the mode and the magnification "100" are alternately and repeatedly displayed on the magnification display portion as shown in FIG. Here, the respective display times do not necessarily have to be equal. This repeated display corresponds to step 101 in FIG. 8 and continues until the mode key is input.

This is repeated until the mode key is input at step 101 in FIG. If there is a mode key input (step 102), three cursors (___) are displayed instead of "100" indicating the magnification M and blinking. By blinking, the operator is requested to enter a key for determining the magnification mode (step 103). Since the variable magnification mode is not determined while it is blinking, the copy start key is not received and the copy operation cannot be entered. Further, since the 10 key 207 is used for determining the scaling factor, it cannot be used for setting the number of sheets. Accordance connexion the number display unit displays the "SCL" As FIG. 9 to inform the operator (S C A L iNG).

If there is no mode key input or ten key input, the state of step 103 is continued, and if there is any ten key input (step 105), the display "U" and the blinking display of the input value are repeated (step 106). Next, if there is a clear key input, clear any blinking input value (step
107), and returns to step 103 again to blink the cursor. While blinking as before, "SCL" is displayed on the magnification display,
I cannot accept the start key input and cannot set the number of copies. If the input value in the blinking display is acceptable, the blinking is stopped by the mode key input, the magnification M is determined (step 108), and the flow returns to. Example 9 of step 101 when M = 58%
FIG. 9 shows an example in the case of M = 192%.

When the input magnification is determined, "SCL" in the number display section in FIGS. 8 and 9 disappears and the number is displayed as shown in FIG. 9, for example. Let us know.

When the U mode is not selected in step 104 of FIG. 8, the UHP mode is set by pressing the mode key again.
At this time, the "UH" display and the blinking display of the cursor are repeatedly displayed on the magnification display section in order to set the magnification MH in the main scanning direction in the UHP mode as in step 111 in FIG. 8 (step 111). At this time as well, the number display section is as shown in FIG.
When setting the UHP mode, enter the desired magnification, for example "200", using the numeric keypad from the state of step 111 (step 113), and the blinking display of the input value 200 and "UH" display will be repeated as in step 114. To do. When the correction is desired, the clear key is input, but when this is all right, the mode key is input (steps 115 and 116), and then the sub-scanning direction magnification MP in the UHP mode is set. The display is a repeated display of the "UP" display and the blinking display of the cursor (step 117). In the same manner as above, if, for example, "50" is input as the magnification MP from the numeric keypad (step 119), the display is "UP" and the input value is 50, for example.
The blinking display of is repeated (step 120). When it is desired to make a correction, a clear key input (step 121) returns to step 117, but if good, a mode key input (step 122) completes the setting of the UHP mode, and step 109 is entered. For example, when inputting 200% as MH and 50% as MP, the display of step 109 is as shown in FIG. 9, and it can be seen that the MH magnification in UHP mode is “200” and the MP magnification is 50. Further, at the step 109, the display of the number of sheets is changed from that of FIG. 9 to show that the number of sheets can be set and the copy can be started.

Now, in step 112 or step 118 in FIG.
If there is no need to set the mode or if you want to cancel, enter the mode key and proceed to step 123.

At step 123, only "A" is displayed on the magnification display section as shown in FIG. 9 to indicate that the mode is the A mode. Since the ten-key input by the operator is not required in the A mode, at the time of step 123, the number display section can set the number of transferred images and start copying as shown in FIG.

Now, in the A mode, since the length of the vertical lever of the reading area is required for calculating the magnification, it is normally displayed as shown in FIG. 9 until the document size information is obtained by the document feeder or the empty scan of the reader optical system. Then, after obtaining the original size, the magnification (eg 70) calculated as shown in Fig. 9 and "A"
Is displayed repeatedly. However, in the case where the reading area of the document is given in advance by another means, it is already displayed as shown in FIG. 9 in step 123 of FIG.

If it is desired to set another mode in the state of step 123, the mode key is input (step 124) to proceed to step 125. At step 125, it is displayed as shown in FIG. 9 to indicate that it is in AHP mode. At this time, the number display section also displays the number as shown in FIG. 9, and the number setting and copy start are possible.

Now, in AHP mode as well as in A mode, it is displayed as shown in FIG. 9 until the reading area size is obtained. After obtaining the reading area size, if the magnifications MH and MP can be calculated, for example, the MH magnification in AHP mode is as shown in FIG. 94% indicates that the MP magnification is 102%.

If the reading area size is also divided in advance, the process proceeds from step 124 in FIG.
The display will be as shown in the figure. If you want to enter another mode setting in step 126, press the mode key to enter step 10.
Proceed to step 3 and the display for setting the U mode appears.

Next, the display control of the number display unit will be described with reference to FIG. RAM with normal initialization at power-on reset
Store 1 in the above flag, QTY-BUF (step 131).
This is the number of sheets to be displayed at initialization (step 132).

As described above, when the scaling mode display and the cursor or blinking input value are repeatedly displayed on the scaling display, the scaling mode is in the process of setting, so the numeric keypad is used to set the scaling (step 133). , Store the number of sheets currently displayed on the number display section in the flag QTY-BUF on the RAM (step 13
4), "SCL" is displayed on the number display section (step 135 and FIG. 9). After that, the completion of the setting of the variable magnification mode is waited (step 136), the process returns to step 132, and the stored number is displayed again. If the scaling mode is confirmed in step 133, check the numeric keypad input (step 13
7), adopt and display it as the number of sheets (step 138,
Step 132).

The clear key is also used to clear the number of sheets (step 13
9. At this time, the start key input is accepted (step 140) and copy processing is performed.
During copying, the set number is displayed in a countdown (step
141), the set number of copies before copying is displayed after completion (step 132).

As described above, not only in the variable magnification mode but also in the edit mode such as trimming and masking, a display device for displaying the copy start prohibition may be provided, and the data may be switched and displayed. May be.

As described above in detail, it has a small number of display parts and key parts,
It has become possible to provide an image processing apparatus with excellent operability and a very high function.

As described above in detail, it is possible to switch and display each data in the main scanning direction and the sub scanning direction such as the magnification and the trimming range on one display.

[Effect] As described above in detail, according to the present invention, when the automatic setting mode for automatically setting the scaling factor is designated, the scaling factor is derived based on the document size information and the paper size information,
After the derivation, it is possible to provide an image processing apparatus capable of controlling the display so as to display the derived scaling ratio in the display unit displaying the scaling mode.

[Brief description of drawings]

 FIG. 1 is an external view of the copying machine of the present embodiment. FIG. 2 is a cross-sectional view of the copying machine. FIG. 3 is a block diagram of the variable magnification function. Block diagram Fig. 6 is an explanatory diagram of the operating section. Fig. 7-1 and Fig. 7-2 are flow charts for automatic scaling mode. Figs. 8 and 9 are flow charts for magnification display section. Fig. 10 is flow charts for number display section. A ... Reader A-1 ... Operation section 300 ... Original 207 ... Ten key 205,206 ... Number and magnification display section 201 ... Start key

Claims (1)

[Claims] 1. Designating means for designating any one of several sub-variable magnification changing modes including automatic setting with respect to the setting of a magnification change rate in the main scanning direction or the sub-scanning direction; Display means for displaying the variable magnification mode, by detecting the original size of any size,
Document size information generating means for generating information indicating the document size, paper size information generating means for generating information indicating the size of paper, information indicating the document size and the paper size information generated by the document size information generating means Derivation means for deriving the scaling ratio based on the paper size information generated by the generation means, and the display means displaying the scaling ratio for the scaling ratio to be used in the designated scaling mode. An image processing apparatus comprising: a display control unit that controls the display unit to perform switching display.