JP3275637B2 - Preparation device for scanner disassembly - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a preparatory operation before color separation of a color original by a scanner in printing and plate making. It relates to a preparation device.

[0002]

2. Description of the Related Art Generally, in order to print and make a color original from a reflective original such as a reversal film, a positive film or a negative film, and an illustration, the color original is printed using a color scanner such as a drum type scanner or a flat head type scanner. Each color negative is created by color separation. Then, these mesh negatives are pasted in accordance with the position and angle specified in the prepress contents instruction, which is called a format assignment / layout instruction, to create a prepress negative.

[0003] Here, in a prepress instruction, which is called a format assignment / layout instruction, that is, an underlaying sheet, a layout of a printed pattern using a color original (a position to be used) and other various information are specified. I have. That is, from the layout of the print pattern designated as the underlaying board, the size of the print pattern, the inclination or angle of the color document, and the trimming range indicating which range of the color document is used as the print pattern can be known.

For example, the original size of a color original is rarely the same as the size of a pattern in a final printed matter.
In general, before color separation by a color scanner, it is necessary to obtain in advance a magnification, which is a ratio between the size of a color document and the size of a printed picture (final finished size). Similarly, the angle and the trimming range must be determined.

The magnification, angle, and trimming range are projected by irradiating a color original with light and projecting the image on an underlaying board, and enlarging the projected image so as to match the pattern on the underlaying board. It is measured by rotating.

On the other hand, a color scanner separates a color original according to the magnification, angle, and trimming range, and performs color correction and the like on the color original.
That is, the requester of the printing does not have to print the color of the picture of the color document as a color print as it is, but, for example, desires to make the brightness of the picture brighter or sharper the picture than the color document.

In order to respond to the request of such a print client, for example, a color scanner corrects the brightness of a picture of a color document and the sharpness intensity of the picture.

[0008]

However, in the preparatory work for printing and plate making, the magnification, angle, and trimming range of the original with respect to the underlaying board are measured in advance as preparations, and numerical values are input to a color scanner. The color correction such as the brightness setting of the color original is performed on the color scanner side.

For this reason, even if the preparatory work for measuring the magnification, the angle, and the trimming range is performed smoothly, there is a possibility that the burden on the color correction work in the color scanner may be increased.

That is, the color correcting operation in the color scanner is not limited to the adjustment of the brightness and the sharpness intensity of the picture, but may be, for example, yellow, magenta, cyan, etc., so that the color of the picture on the printed matter is printed as a desired color. The balance is also adjusted.

Therefore, it is necessary to measure the magnification, the angle, and the trimming range of the original with respect to the underlaying board as a preparatory preparation, and then perform a color correction operation with a color scanner.
It was not efficient work.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a scanner pre-disassembly preparatory apparatus capable of setting color correction information as a preparatory preparation for color separation as well as measuring magnification, angle, and trimming range.

[0013]

According to the first aspect of the present invention, there is provided a scanner for projecting an image of a document onto an underlaying board and calculating an angle, a magnification, and a trimming range of the projected image with respect to the pattern of the underlaying board. In the pre-disassembly preparation device, the angle,
Along with determining a magnification and a trimming range, a brightness instruction for selecting at least a desired tone curve when color-separating a document by a color scanner, highlight adjustment, sharpness adjustment for setting the degree of sharpness enhancement, and yellow An assist information setting unit for setting assist information including color correction for correcting the balance of magenta and cyan, a memory for storing assist information together with data of an angle, a magnification, and a trimming range, and a memory for storing the assist information. A scanner disassembly preparatory apparatus that includes a transfer unit that transfers each data of an angle, a magnification, a trimming range, and assist information to a color scanner.

According to the second aspect of the present invention, the color correction of the assist information setting section performs red color correction by adjusting at least the balance of yellow and magenta.

According to the third aspect of the present invention, the color correction of the assist information setting section is performed by adjusting at least the balance of magenta and cyan to correct the blue color.

According to the fourth aspect, in the color correction of the assist information setting section, green color is corrected by adjusting at least the balance between cyan and yellow. According to the fifth aspect, the color correction of the assist information setting unit makes the gray balance of the middle tone region in the tone curve of the halftone dot with respect to the density uniform.

According to the sixth aspect, in the color correction of the assist information setting section, the gray balance of the highlight area in the tone curve of the halftone dot with respect to the density is made uniform. According to the seventh aspect, the color correction of the assist information setting unit makes the gray balance of the shadow area in the tone curve of the halftone dot with respect to the density uniform.

[0018]

[0019]

[0020]

According to the first aspect, the image of the original is projected onto the underlaying board, and the angle of the projected image with respect to the pattern of the underlaying board is calculated.
A brightness instruction for selecting at least a desired tone curve at the time of performing color separation of a document by the assist information setting unit along with calculating a magnification and a trimming range,
Assist information including highlight adjustment, sharpness adjustment for setting the degree of sharpness enhancement, and color correction for correcting the balance between yellow, magenta, and cyan is set. Then, the assist information is stored in the memory together with the angle, the magnification, and the trimming range, and the data of the angle, the magnification, the trimming range, and the assist information stored in the memory are transferred to the color scanner by the transfer unit. This can save labor.

According to the second aspect, the color correction of the assist information setting section is performed by adjusting at least the balance of yellow and magenta to correct the red system.

According to the third aspect of the present invention, the color correction of the assist information setting section performs blue color correction by adjusting at least the balance of magenta and cyan.

According to the fourth aspect, the color correction of the assist information setting section performs green color correction by adjusting at least the balance between cyan and yellow.

According to the fifth aspect, in the color correction of the assist information setting unit, the gray balance of the middle tone region in the tone curve of the halftone dot with respect to the density is made uniform.

According to the sixth aspect, in the color correction of the assist information setting section, the gray balance of the highlight area in the tone curve of the halftone dot with respect to the density is made uniform.

According to the seventh aspect, in the color correction of the assist information setting section, the gray balance of the shadow area in the tone curve of the halftone dot with respect to the density is made uniform.

[0027]

[0028]

[0029]

[0030]

[0031]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall configuration diagram of an image reading system to which a scanner pre-disassembly preparation device is applied.

The angle setting device 1 has a CRT display 2
Is connected. The angle setting device 1 and the preparation data processing device 3 have a function of measuring the angle, magnification, and trimming range of the color document with respect to the underlaying board, and a function of setting a brightness instruction and a color correction for the color document. Have. Here, the function of setting the brightness instruction and the color correction for the original is to perform the brightness instruction and the color correction parameter setting of the color scanner.

A storage device 4 such as a magnetic disk is connected to the preparation data processing device 3, and a color scanner 5 is connected to the storage device 4. Further, a floppy disk 6 is interposed between the preparatory data processing device 3 and the color scanner 5. The color scanner 5 includes a CRT display 7 for monitoring.

Accordingly, the color scanner 5 exchanges data with the preparation data processing device 3 via the storage device 4 or the floppy disk 6.
As will be described later, the cassette 17 on which the color original is set is used for color separation by the color scanner 5 as it is after measurement by the angle setting device 1.

Next, specific configurations of the angle setting device 1 and the preparation data processing device 3 will be described with reference to FIG.
The angle setting machine 1 has a tablet 11 provided on a gantry 10 and a slide column 12 erected. In addition, on the tablet 11, an underprint is placed.

The slide column 12 is provided with a projection optical system 13 slidably in the column direction. The projection optical system 13 has a white light source provided therein, and a positioner 14 and a projection lens system 15 are arranged below the white light source.

The positioner 14 includes cassettes 17 to 19 for holding a color original 16 as shown in FIG.
Is a mechanism for positioning and holding. These cassettes 17 to 19 hold, for example, one color original as shown in FIG. 3A, two color originals as shown in FIG. 3B, and FIG. As shown, various types are prepared, such as one holding four color originals. As shown, the external dimensions of the cassette are the same.

Each of the cassettes 17 to 19 has an individual identification code Q (Q1 to Q4).
Further, instead of the identification code Q or the identification code Q
At the same time, a barcode B1 may be used as shown in FIG. The identification code Q and the bar code B1 are unique to each of the cassettes 17 to 19, and the identification code Q
Cassettes 17 to 19, even from barcode B1
Can be identified.

The positioner 14 has a cassette insertion port 2
0 is formed therein, and a mechanism for pulling in / drawing out the cassette 18 and a cassette mounting mechanism 21 shown in FIG. 4 are provided therein. In the figure, a cassette 18 for holding two color originals is held.

The cassette mounting mechanism 21 is composed of an XY table 22 and has an X-axis
The table 22a is placed, and the Y table 22b is
It is placed on the table 22a. Each Y-axis rail 24 is provided on the lower surface of the Y table 22b and is mounted on the X table 22a.

The X table 22a is provided with a screw receiver 25, which is screwed with a pawl screw 27 connected to a rotating shaft of an X-axis motor 26. Also, the Y table 22b
A rack is formed on each of the Y-axis rails 24 provided on the lower surface of each pinion, and as shown in FIG.
Is screwed. The rotation shaft of each Y-axis motor 29 is connected to these pinions 28.

On the Y table 22b, there are provided reference bars 30 for defining the mounting position of the cassette 18, and press bars 31 and 32 on both sides of the cassette 18, respectively.
Are slidable toward the cassette 18 by the urging force of each spring (not shown).

These holding bars 31 and 32 serve as a mechanism for pressing the cassette 18 toward the reference bar 30 as shown in FIG. A holding pin 3 is provided on the cassette insertion port 20 side of the Y table 22b.
3 are provided. As shown in FIG. 7, the holding pin 33 has a tapered tip, and when the cassette 18 is inserted, it rises in the direction of the arrow (A) and
Is mounted on the surface of the Y table 22b, and the cassette 18
It is designed to hold down the movement and fix it.

On the reference bar 30, a cassette sensor 34 is provided.
Is provided. The cassette sensor 34 detects the insertion of the cassette 18 when the cassette 18 is inserted, and outputs a detection signal.

It should be noted that the cassette 1
As shown in FIG. 8, each origin pin 35 is used for positioning when 8 is mounted. Tablet 11
It has a coordinate reading function. That is, tablet 1
1 has a cursor index device 36, and has a function of generating a coordinate signal of the designated point when an arbitrary point on the tablet 11 is designated by the cursor index device 3.

On the right side of the tablet 11, a measurement item selection column 37 shown in FIG. 9 is formed. In the measurement item selection column 37, columns for selecting an angle (angle skip, angle OK, angle clear), magnification (magnification OK, magnification clear), and a trimming range (full trimming, trimming OK, trimming clear) are formed. Have been.

In the measurement item selection column 37, "brightness instruction", "highlight", "sharpness intensity instruction" as assist information serving as conditions for color separation by the color scanner 5, and furthermore, color "Beautiful skin" for correction
Columns such as "Align gray,""beautifulhighlight,""beautifulshadow,""beautifulsky," and "beautiful green" are formed.

Therefore, if a desired field, for example, “magnification OK” is indicated by the cursor indicator 36, the “magnification O”
A coordinate signal corresponding to the "K" column is generated. or,
A barcode reader (not shown) may be provided at an arbitrary position on the tablet 11 in advance to read the barcode B1 used for the cassette 19.

When setting the assist information such as "brightness instruction" by projecting the image of the color document 16 on the tablet 11, as shown in FIG.
White paper 38, which is a white material, is placed on the surface.

The placement of the blank paper 38 is sensitive to the gray balance created in a predetermined ratio (for example, 1: 1: 1) of yellow, magenta, and cyan when humans see colors. If the base is not white, accurate colors cannot be recognized.

In particular, Japanese tend to prefer blue-gray slightly biased blue. Therefore, the white paper 38 may be slightly coated with a blue dye, and the same white paper as the white paper to be printed may be used.

As the white material, a metal plate or a plastic plate coated with a white dye is most suitable. The white light source 39 is provided inside the projection optical system 13.

On the other hand, the configuration of the preparation data processing device 3 is as follows.
It is as follows. The CRT display 2 is connected to a main control unit 50 composed of a CPU via a display drive unit 51, a cursor indicator 36 and a keyboard 53 are connected via an input unit 52, and a memory 54.
Is connected.

The elevation control unit 55, the positioner control unit 56, the angle calculation unit 57, the magnification calculation unit 58, the trimming setting unit 59, the assist information setting unit 60, and the enlargement / reduction conversion unit are controlled by commands issued from the main control unit 50. 61 operates.

The elevation control unit 55 has a function of moving the projection optical system 13 up and down with respect to the slide column 12 in accordance with an elevation instruction input from the keyboard 53 by a key.
In particular, when the elevation control unit 55 measures the angle, magnification, and trimming range by preparatory work for color separation, and receives from the main control unit 50 an end signal for setting assist information such as a brightness instruction for a color document, The projection optical system 13 is moved 130 degrees from the initial position, for example, from the floor on which the angle setting device 1 is installed.
cm function.

The positioner control section 56 has a function of controlling the driving of the X-axis motor 26 and each Y-axis motor 29 in the cassette mounting mechanism 21 shown in FIG. The positioner control unit 56 detects the insertion of the cassette 18 and
The pressing bars 31, 32 of the cassette mounting mechanism 21 are pressed against the cassette 18, the pressing pins 33 are driven up, and the pressing bars 31, 32 are received by receiving a cassette removal signal from the keyboard 53. The cassette 18 has a function of being driven to separate from the cassette 18 and driven downward of the presser pin 33 to eject the cassette 18 toward the cassette insertion slot 20.

Further, the positioner control section 56 controls the identification code Q of the cassette 18 mounted on the cassette mounting mechanism 21.
An identification sensor for reading the color document 16 is determined from the identification code Q read by the identification sensor, and the X-axis motor 26 and the X-axis motor 26 of the cassette mounting mechanism 21 are provided for each color document 16 as shown in FIG. Each Y-axis motor 29 has a function of driving and controlling the center position of each color document 16 and the center position of the tablet 11 with the optical axis of the projection optical system 13.

When the image of the color document 16 projected on the underlaying board coincides with the corresponding pattern on the underlaying board, the angle calculating section 57 outputs a reference side (for example, a left-right direction) on the underlaying board. It has a function of calculating the angle of the color document 16 from each coordinate signal when two points on the (horizontal line) are designated by the cursor indicator 36.

The magnification calculator 58 reads the distance between the white light source of the projection optical system 13 and the tablet 11, and calculates the magnification for the color document 16 when the image of the color document 16 is enlarged and projected on the tablet 11 from this distance. It has the function to do.

The trimming setting section 59 sets a trimming range for the color original 16 from each coordinate signal when each point indicating a desired area in the color original 16 projected on the underlaying board is designated by the cursor indexer 36. It has the function to do.

The assist information setting section 60 controls the color original 1
This is for setting assist information including "brightness instruction" for color separation of the image No. 6, and as shown in FIG. 12, a brightness instruction section 60a, a highlight adjustment section 60b, a sharpness adjustment section 60c, and a color correction section. 60d. Here, the assist information setting unit 60 sets various parameters for an assist function such as a brightness instruction and a color correction of the color scanner.

The brightness instructing section 60a holds a plurality of tone curves of halftone dots with respect to density, for example, tone curves H1 and H2, as shown in FIG.
1. It has a function of selecting a desired tone curve from H2.

As shown in FIG. 14, the highlight adjusting section 60b has a function of changing the density position of “0” without halftone dots in the tone curve of halftone dots with respect to density in the direction of arrow (c) to perform highlight adjustment. Have.

The sharpness adjusting section 60c is configured as shown in FIG.
(B) is combined with the image signal of the color original 16 shown in FIG. 3 (b) to obtain an image signal in which sharpness is enhanced as shown in FIG.
It has a function of setting the degree of sharpness of the image of the color document 16 at this time.

The color correcting section 60d compares the balance of each color of yellow, magenta, and cyan when the image of the color original 16 is color-separated with the reference balance, and based on the comparison result, the balance of yellow, magenta, and cyan. And specifically has the following functions.

That is, in the measurement item selection field 37,
When a "beautiful skin color" is designated, it has a function of adjusting at least the balance of yellow and magenta to perform red color correction.

When a "beautiful sky" is designated, at least the function of adjusting the balance of magenta and cyan and correcting the blue system is provided. When "beautiful green" is designated, the image processing apparatus has a function of adjusting at least the balance of cyan and magenta to correct the green system.

When "align gray" is designated, a function is provided to align the gray balance of the middle tone area in the tone curve of the halftone dot with respect to the density as shown in FIG.

When "beautiful highlights" is designated, a function is provided to make the gray balance of the highlight area in the tone curve of the halftone dot with respect to the density uniform.
When "beautiful shadows" is designated, it has a function to make the gray balance of the shadow area in the tone curve of the halftone dot with respect to the density uniform.

When the projected image of the color document 16 is enlarged / reduced, the enlargement / reduction conversion section 61 uses the cursor indicator 36 to indicate the point on the enlarged / reduced projected image on the color document 16 in the cassette. Has the function of converting the coordinate values into

The main controller 50 has a function of temporarily storing in the memory 54 data measured and set by the angle calculator 57, the magnification calculator 58, the trimming setting unit 59, and the assist information setting unit 60. ing.

This memory 54 is stored according to the storage format shown in FIG. That is, the storage area is divided for each identification number (No) of each of the cassettes 17 to 19, and further divided for each color document 16 for each of these storage areas, and the angle data, the magnification data, the trimming range data, the "brightness instruction" And other assist information.

An output section 62 and a transfer section 63 are connected to the main control section 50. The output unit 62 writes each data stored in the memory 54 to the floppy disk 6 according to a command from the main control unit 50.

The transfer section 63 reads out each data stored in the memory 54 in accordance with a command from the main control section 50,
It has a function of transferring these data to the storage device 4. On the other hand, the color scanner 5 reads assist information such as the angle data, magnification data, trimming range data, and “brightness instruction” stored in the floppy disk 6 or the storage device 4, and based on the data, reads the color original 16. It has a function of performing color separation.

Next, the operation of the apparatus constructed as described above will be described with reference to the flow chart of the preparation before disassembly of the scanner shown in FIG. On the tablet 11 of the angling machine 1, an underlaying sheet 70 as shown in FIG. 19 is placed. On the underlaying mount 70, for example, a print pattern 71 using the color original 16 is shown. From the printed picture 71, the size (magnification and trimming range) and the inclination (angle) of the picture can be known.

A cassette holding the color original 16 corresponding to the print pattern 71, for example, a cassette 18, is prepared. Cassette 18 holding this color original 16
This is a series of operations using the same cassette without taking out the color document 16 from the cassette 18 until the subsequent measurement of magnification, angle, and trimming range, setting of assist information, and color separation by a color scanner.

On the other hand, when the cassette name of the cassette 18, the identification code Q, the number of color documents 16 held, and the like are input from the keyboard 53, the main controller 50 proceeds to step # 1.
In steps # 4 to # 4, the cassette name, identification code Q, the number of color documents 16 held, and the like are fetched and sent to the positioner control unit 56.

In this state, the cassette 18 is set in the angle setting machine 1.
When the cassette 18 is inserted into the cassette
Is drawn in by the pull-in / pull-out mechanism of the positioner 14, and subsequently mounted on the XY table 2 of the cassette mounting mechanism 21 shown in FIG.

That is, when the insertion of the cassette 18 is detected by the cassette sensor 34, the positioner controller 5
6, the pressing bars 31 and 32 are pressed against the cassette 18 as shown in FIG. 6, and the pressing pins 33 are raised as shown in FIG. 7 to fix the cassette 18 on the XY table 22. Place.

Next, the positioner controller 56 determines the identification code Q of the cassette 18 mounted on the cassette mounting mechanism 21.
Is read by the identification sensor, and the number of color documents 16 to be held is determined from the identification code Q. Here, when the barcode B1 is used instead of the identification code Q, the barcode may be read using a barcode reader prepared in advance.

The positioner controller 56 controls the driving of the X-axis motor 26 and the respective Y-axis motors 29 of the cassette mounting mechanism 21 as shown in FIG. 11, and moves the cassette 18 on the XY plane as shown in FIG. Then, the center position of one of the two color documents 16 and the center position of the tablet 11 are aligned with the optical axis of the projection optical system 13.

In this state, the white light source 3 of the projection optical system 13
9 lights up, the image of the color original 16 is copied
Projected above. Here, the projected image of the color document 16 is operated so that its direction and size match the picture 71 specified on the underlaying board 70.

The projected image of the color original 16 and the picture 71
In order to match the pattern of the color original 16 by controlling the elevation of the projection optical system 7 by the elevation control unit 55,
Is performed while enlarging or reducing the projected image and rotating the underlaying board 70.

When the projected image of the color document 16 matches the pattern 71 on the underlaying board 70 in this way, the cursor indicator 36 allows the measurement item selection field 3 on the tablet 11 to be selected.
"Magnification OK" in 7 is indicated.

When a coordinate signal of "magnification OK" is generated according to the instruction of the cursor indicator 36, the main control unit 50 issues an operation command to the magnification calculation unit 58 based on the coordinate signal.
In step # 7, the magnification calculator 58 reads the distance between the white light source of the projection optical system 13 and the tablet 11, and calculates the magnification for the color document 16 from the distance. After this calculation, an input for angle setting is awaited.

As shown in FIG. 19, when the projected image of the color document 16 and the pattern 71 on the underlaying board 70 match each other according to the instruction of the cursor indicator 36 as shown in FIG. The two points of the sides E and F are designated by the cursor indicator 36, and subsequently, the cursor indicator 36 indicates "OK" in the measurement item selection field 37.

When "OK" is instructed by the cursor indicator 36, the main controller 50 issues an operation command to the angle calculator 57. This angle calculation unit 57 performs step #
8, the range AB of the projected image of the color original 16
The angle α of the underlaying board 70 with respect to CD is determined by reference sides E and F.
Is calculated from each coordinate signal of the two points. Color manuscript 16
Are fixed in a state set in the cassette 18 and the cassette 18 is also fixed to the projection optical system 13.
The angle between D and the tablet 11 is always constant. Therefore,
The angle α can be calculated from two points of the reference sides E and F of the underlaying board 70 placed on the tablet 11.

After calculating the angle α, the system waits for an input for setting a trimming range. The trimming range is set by setting the trimming range GH from the pattern 71 of the underlaying board 70.
−IJ, the cursor indexer 36
2 points G, I (or H, J) on the diagonal line according to the instruction of
Is specified, and subsequently, "trimming OK" in the measurement item selection field 37 is designated by the cursor indicator 36.

When "trimming OK" is instructed by the cursor indicator 36, the main control unit 50 issues an operation command to the trimming setting unit 59. In step # 9, the trimming setting unit 59 sets the cursor index device 3
6, the trimming range G-H- of the pattern 71 with respect to the projection range ABCD of the color document 16 based on the coordinate signals of the two points G, I (or H, J) on the diagonal indicated by 6. Calculate IJ.

Here, the color original 1 on the tablet 11
Assuming that the projection image 6 is enlarged as shown in FIG. 20, the enlargement / reduction conversion unit 61 converts the coordinate value of the point designated by the cursor index 13 into the coordinate value on the color original 16 in the cassette 18. Convert.

For example, if the image of the color document 16 is enlarged three times, the designated coordinates X,
Y is converted into coordinate values (X / 3, Y / 3) on the color document 16. Based on the coordinate values (X / 3, Y / 3), the color document 16 is subjected to color separation by the color scanner.

Next, assist information such as "brightness instruction" of the color original 16 is set. When setting the assist information, the underlaying board 70 on the tablet 11 is removed, and as shown in FIG. A blank paper 38 is placed.

Accordingly, the color original 1 is placed on the 38 blank sheets.
6 is projected, and a state is obtained in which accurate color recognition of this image can be performed. Thereafter, the assist information setting unit 60
In step # 10, the assist information is set. The setting of the assist information is performed according to the assist information setting flowchart shown in FIG.

First, when "brightness instruction" in the measurement item selection field 37 is instructed by the cursor indicator 36, the main control unit 50 issues an operation command to the brightness instruction unit 60a of the assist information setting unit 60.

This brightness instruction can be set in, for example, six levels. The brightness of a desired level is set to six levels in numerical values “1” to “6” in the measurement item selection column 37, and these numerical values “1” to “6” are set. This is performed by designating “6” with the cursor indicator 36.

Accordingly, the brightness indicating section 60a reads the numerical value indicated by the cursor indicator 36 and selects the tone curve corresponding to the indicated numerical value, for example, the tone curve H2 from the plurality of tone curves shown in FIG. Set.

Next, when "highlight" is instructed by the cursor indicator 36, the main control unit 50 issues an operation command to the highlight adjustment unit 60b. This highlight adjustment can be set in, for example, seven levels. For the desired highlight, the numerical values “1” to “7” in the measurement item selection field 37 are set to seven levels, and these numerical values “1” to “7” are set with the cursor. This is performed by instructing with the indicator 36.

Accordingly, the highlight adjusting section 60b reads the numerical value indicated by the cursor indicator 36, and
As shown in (5), the density position of “0” without halftone dot in the tone curve of the halftone dot with respect to the density is changed in the direction of the arrow (C) according to the designated numerical value to set the highlight adjustment.

Next, when the "sharpness strength instruction" is instructed by the cursor indicator 36, an operation command is issued to the sharpness adjusting section 60c. Sharpness adjustment unit 6
0c is obtained by synthesizing the image signal of the color original 16 shown in FIG. 15 (a) with the signal for sharpness shown in FIG. 15 (b) to obtain an image signal in which the sharpness shown in FIG. 15 (c) is enhanced. However, the degree of sharpness at this time is determined by the numerical values “1” to “3” in the measurement item selection field 37 by the cursor indicator 36.
Is set in three stages.

Next, the color correction for the color original 16 is performed. At the time of this color correction, the image of the color original 16 is enlarged and projected on a white paper 38. That is, when performing the color correction, the point at which the color correction is to be performed is indicated by the cursor index device 36. However, if the image of the color document 16 is enlarged and projected, the point specified by the cursor index device 36 will not be mistaken.

In this state, “beautiful skin color” is designated by the cursor indicator 36 in the measurement item selection field 37,
Subsequently, in the image projected on the blank paper 8 placed on the tablet 11, when the cursor index device 36 designates up to 10 points for performing the correction of “beautiful flesh color”, the color correction unit 60d outputs Calculates the average of the ratio of yellow and magenta, compares this average with the reference ratio of "beautiful flesh color (red color)" to determine a coefficient, and corrects the actual ratio (balance) of yellow and magenta with this coefficient I do.

The coordinates of each point designated by the cursor indicator 36 are converted by the scaling converter 61 into the color original 1
The coordinates are converted into coordinates on the memory 6, and the coordinate values are stored in the memory 54.

By correcting the "beautiful flesh color" in this way, it is possible to print a human flesh color, in particular, a beautiful flesh color suitable for a Japanese sense, for example. Next, in the image in which “beautiful sky” is designated by the cursor indicator 36 and subsequently projected on the blank paper 8 placed on the tablet 11,
When up to 10 points to correct the "beautiful sky" are designated by the cursor indexer 36, the color correction unit 60d
Find the average of the ratios of magenta and cyan at zero point,
The average is compared with a reference ratio of “beautiful sky (blue system)” to obtain a coefficient, and the actual ratio (balance) between magenta and cyan is corrected using the coefficient.

Here, the coordinates of each point designated by the cursor indicator 36 are converted into coordinates on the color original 16 by the scaling converter 61, and the coordinate values are stored in the memory 54.

By correcting the “beautiful sky” in this way,
In particular, the color of the sky in a landscape can be color printed as a beautiful sky such as clear blue. Next, "Beautiful green"
Is specified by the cursor indexer 36, and then, when the cursor indexer 36 designates up to 10 points in the image projected on the blank paper 8 placed on the tablet 11 to perform "beautiful green" correction, the color The correction unit 60d
The average of the ratios of cyan and yellow at these 10 points is obtained, and the average is compared with the reference ratio of “beautiful green (green system)” to obtain a coefficient. Balance).

By performing the correction of “beautiful green” as described above,
In particular, the color of the fresh green of the scenery can be printed, for example, as vivid fresh green. Next, when “align gray” is designated by the cursor indicator 36, the color correction unit 60d
The gray balance of the middle tone area in the halftone tone curve for the density shown in FIG. In this case, the gray balance of the middle tone area is adjusted for each of red (R), green (G), and blue (B) for color separation.

Next, when "beautiful highlight" is designated by the cursor indicator 36, the color correcting section 60d converts the gray balance of the highlight area in the tone curve shown in FIG. ), Green (G), blue (B)
Align each separately.

By adjusting the gray balance in the highlight area in this way, when the color original 16 is printed, for example, a daytime landscape is printed beautifully. Next, when "beautiful shadow" is designated by the cursor indicator 36, the color correction unit 60d performs red (R) and green (G) color separation of the gray balance of the shadow area in the tone curve shown in FIG. ) And blue (B).

By making the gray balance of the shadow area uniform in this way, when the color original 16 is printed, for example, a night scene is printed beautifully. When the setting of the assist information has been completed and “OK” in the measurement item selection field 37 is designated by the cursor indicator 36, the main control unit 50 issues a termination command to the assist information setting unit 60. The above setting of the assist information means that each parameter setting performed by the color scanner has been performed in advance.

Next, in step # 11, the main controller 50 determines whether the setting of the magnification, the angle, the trimming range, and the assist information for the color document 16 has been completed and is "OK". If so, the number of color documents 16 held in the cassette 18 is checked. If there is another color document 16, the process proceeds to step # 13, and a command to align the position of the other color document 16 is issued to the posioner control unit 56. .

That is, the positioner control section 56 controls the driving of the X-axis motor 26 and each Y-axis motor 29 of the cassette mounting mechanism 21, moves the cassette 18 on the XY plane as shown in FIG. The center position of the document 16 and the center position of the tablet 11 are aligned with the optical axis of the projection optical system 13.

Thereafter, the main control unit 50 returns to step # 7, and sets the magnification, angle, trimming range, and assist information for the other color document 16. When the setting of the magnification, the angle, the trimming range, and the assist information for each of the two color originals 16 is completed, the main control unit 50 issues an end signal to the elevation control unit 55 in step # 14.

Upon receiving the end signal from the main control unit 50, the elevation control unit 55 sets the initial position, for example, the angle setting device 1 from the position when the projection optical system 13 was measured as shown in FIG. Return to the position 130cm from the installed floor.

Next, the main controller 50 issues a cassette removal signal to the positioner controller 56 in step # 15. In addition, generation of this cassette removal signal
It may be performed automatically, or a manual method by key input of the keyboard 53 may be used.

When the positioner control section 56 receives the cassette removal signal, the positioner control section 56 drives the holding bars 31 and 32 to separate from the cassette 18 and also drives the holding pins 33 to move the cassette 18 toward the cassette insertion slot 20. Let it drain.

Since the projection optical system 13 is returned to the initial position and the cassette 18 is ejected in this manner, for example, it becomes easy to take the cassette 18 in a comfortable posture. The initial position of the projection optical system 13 can be set arbitrarily.

Next, the main control unit 50 converts the coordinates of each point designated on the tablet 11 into the coordinates on the color original 16 by the enlargement / reduction conversion unit 61 in step # 15.
Note that the color original 1 by the enlargement / reduction conversion unit 61 is actually
The coordinate conversion to 6 is performed as needed for each instruction by the cursor indicator 36.

On the other hand, the main control unit 50 controls each color document 16
The measured magnification, angle, trimming range, and set assist information, each point indicated by color correction, etc.
The data is sequentially stored in the memory 54 at the time of the measurement.

At this time, in the memory 54, the storage area is divided according to the identification numbers (No) of the cassettes 17 to 19 according to the storage format shown in FIG. Thus, assist information such as angle data, magnification data, trimming range data, and “brightness instruction” is stored.

Next, in step # 17, the main control unit 50 outputs the assist information such as the angle data, the magnification data, the trimming range data, and the “brightness instruction” stored in the memory 54 to the floppy disk 6 via the output unit 62. To the storage device 4 via the transfer unit 53.

Thereafter, the cassette 1 is inserted into the color scanner 5.
8 is set to perform color separation. At this time, the color scanner 5 reads the identification code Q of the cassette 18.
Then, based on the read identification code Q, parameters relating to assist information such as angle data, magnification data, trimming range data, and “brightness instruction” corresponding to the cassette 18 stored in the floppy disk 6 or the storage device 4. Is read, and color separation is performed based on these data to create net negative digital data for each of R, G, and B, or a net negative film for each of YMCK.

At this time, the color scanner 5 needs to correct and set the assist information of “beautiful skin color”, “beautiful sky”, “beautiful green”, “gray is aligned”, “beautiful highlight”, and “beautiful shadow”. Almost no need.

As described above, in the above-described embodiment, the image of the color original 16 is projected onto the copyboard 70, and the angle, magnification, and trimming range of the projected image with respect to the pattern of the copyboard 70 are measured. At the same time, assist information for color separation of the color document 16, for example, “instruct brightness”
To set “Highlight” etc., use the color scanner 5
The setting work performed on the side can be set in advance in the angle setting device 1 and transferred to the color scanner 5, and it is almost unnecessary to set the assist information on the color scanner 5 side, so that labor can be saved.

In particular, the assist information includes “beautiful skin color”, “beautiful sky”, “beautiful green”, and “gray are aligned”.
Since "beautiful highlights" and "beautiful shadows" can be set in advance, most of the setting work performed on the color scanner 5 can be set, and as a result, the work on the color scanner 5 can be simplified, It can be reduced and labor can be reduced.

[0125]

As described above in detail, according to the present invention, the magnification, the angle, the trimming range, the brightness instruction,
Assist information including highlight adjustment, sharpness adjustment, and color correction can also be set as preparatory preparations for color separation, and a scanner preparatory preparation apparatus capable of saving labor can be provided.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of an image reading system to which an embodiment of a scanner disassembly preparatory apparatus according to the present invention is applied.

FIG. 2 is a specific configuration diagram of an angle setting device and a preparation data processing device.

FIG. 3 is a diagram showing cassettes having different numbers of color documents held therein;

FIG. 4 is a configuration diagram of a cassette mounting mechanism.

FIG. 5 is a diagram showing a driving mechanism of a Y table.

FIG. 6 is a diagram illustrating a holding operation when a cassette is mounted.

FIG. 7 is a view showing the action of a holding pin on the cassette.

FIG. 8 is a view showing an origin pin for positioning the cassette.

FIG. 9 is a view showing a measurement item selection column formed on the tablet.

FIG. 10 is a diagram showing a white material placed on a tablet.

FIG. 11 is a diagram showing optical axis alignment between a color document and a tablet.

FIG. 12 is a block diagram showing specific functions of an assist information setting unit.

FIG. 13 is a diagram illustrating a setting operation of a brightness instruction unit.

FIG. 14 is a diagram showing a setting operation of a highlight adjustment unit.

FIG. 15 is a view showing a setting effect of sharpness enhancement.

FIG. 16 is a view showing settings for color correction.

FIG. 17 is a schematic diagram showing a data storage format in a memory.

FIG. 18 is a flowchart of preparation before scanner disassembly.

FIG. 19 is a schematic diagram when measuring an angle, a magnification, and a trimming range.

FIG. 20 is a diagram showing a coordinate conversion operation on a color original.

FIG. 21 is a flowchart of assist information setting.

FIG. 22 is a diagram illustrating an operation of returning the projection optical system to an initial position.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Angling machine, 3 ... Preparation data processing device, 4 ... Storage device, 5 ... Color scanner, 6 ... Floppy disk, 11 ... Tablet, 12 ... Slide support, 13 ... Projection optical system, 14 ... Positioner, 16 ... Color manuscript, 1
7 to 19: cassette, 22: XY table, 21: cassette mounting mechanism, 36: cursor indicator, 37: measurement item selection column, 38: blank paper, 39: white light source, 50: main control unit, 54: memory, 55 ... Elevation control unit, 56 ... Positioner control unit, 57 ... Angle calculation unit, 58 ... Magnification calculation unit, 5
9: trimming setting unit, 60: assist information setting unit, 6
0a: brightness instructing unit, 60b: highlight adjusting unit, 60
c: sharpness adjustment unit, 60d: color correction unit, 61: enlargement / reduction conversion unit, 70: underlaying board.

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-291655 (JP, A) JP-A-2-291558 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G03F 1/00 H04N 1/387

Claims (7)

(57) [Claims] 1. A pre-scanner disassembly preparatory apparatus for projecting an image of a document onto an underlaying board and calculating an angle, a magnification, and a trimming range of the projected image with respect to the pattern of the underlaying board, Magnification, and determination of the trimming range, a brightness instruction to select at least a desired tone curve when the document is separated by a color scanner, highlight adjustment, and sharpness adjustment to set the degree of sharpness enhancement. An assist information setting unit that sets assist information including color correction for correcting the balance of yellow, magenta, and cyan; and a memory that stores the assist information together with the data of the angle, the magnification, and the trimming range. Each data of the angle, the magnification, and the trimming range stored in the memory And a transfer unit for transferring the assist information to the color scanner. 2. The scanner pre-disassembly preparatory apparatus according to claim 1, wherein the color correction of the assist information setting section is performed by adjusting at least the balance of yellow and magenta to correct the red system. 3. The scanner disassembly preparatory apparatus according to claim 1, wherein the color correction of the assist information setting unit is performed by adjusting at least a balance of magenta and cyan to correct a blue color system. 4. The scanner pre-disassembly preparation apparatus according to claim 1, wherein the color correction of the assist information setting section is performed by adjusting at least the balance of cyan and yellow to correct the green system. 5. The method according to claim 1, wherein the color correction of the assist information setting unit makes a gray balance of a middle tone region in a tone curve of a halftone dot with respect to density uniform.
The scanner pre-disassembly preparation device described in the above. 6. The scanner pre-disassembly preparatory apparatus according to claim 1, wherein the color correction of the assist information setting unit makes the gray balance of a highlight area in a tone curve of a halftone dot with respect to density uniform. 7. The scanner disassembly pre-preparation apparatus according to claim 1, wherein the color correction of the assist information setting unit makes the gray balance of a shadow area in a tone curve of a halftone dot with respect to density uniform.