JP3218866B2 - 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 scanner disassembly preparatory apparatus for measuring the angle, magnification, trimming range, etc., of an original image with respect to an underlay board as a preparatory work for separating a color original by a scanner in printing and plate making. <br/>

[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.

[0005] Here, a color plate layout (position to be used) and other various information are specified in a plate making instruction called a format assignment / layout instruction, that is, an underlaying sheet.

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 determine in advance the ratio between the size of the color document and the final finished size, that is, the magnification of the color document.

[0005] In addition, an angle at which a picture is taken in is specified on the underlaying board.

Further, when a part of a color original is used for the underlaying board, a range for taking in the color original, that is, a trimming range is specified.

The measurement of the magnification, the angle, and the trimming range is performed by an angle setting device shown in FIG. This angle setting machine is provided with a tablet 1
01 is provided, and a slide column 102 is provided upright. In addition, on the tablet 101, an underprint is placed.

The projection column 102 is provided with a projection optical system 103 slidably in the column direction. The projection optical system 103 includes a white light source therein, and a positioner 104 and a projection lens system 105 are disposed below the white light source. A cassette for holding a color document is inserted into the positioner 104.

With such a configuration, the underlaying mount is placed on the tablet 101 and a cassette holding color originals is set on the positioner 104.

In this state, when the white light source is turned on, the image of the color original is projected onto the underlaying paper placed on the tablet 101.

Here, in order to match the projected image of the color original with the pattern on the underlaying board, the projection optical system 103 is moved up and down with respect to the slide column 102 to enlarge and reduce the projected image. Is rotated to make the direction of the projected image coincide with the direction of the pattern on the underlaying board.

When the projected image of the color document and the pattern on the underlaying board match in this way, the magnification is measured from the elevation position of the projection optical system 103 at this time, and further the angle and the trimming range are measured.

[0013]

By the way, when measuring the angle and trimming range of the color original with respect to the pattern of the copyboard, a cursor indexer, for example, a mouse is used on the image projected on the copyboard. Each point for measuring the angle and the trimming range is input as a point.

However, for example, when an image of a color original is reduced and projected on an underlaying paper, or when the size of the color original is small, for example, 35 mm, the image of the color original is not enlarged and remains almost the same size. When the image is projected on the lower mount, even if a point is designated by the cursor indicator, the position is shifted, and it is very difficult to accurately designate a point at a desired position.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a scanner pre-disassembly preparation apparatus which can accurately specify a point on a projected image of a document.

[0016]

According to the first aspect of the present invention, as a preparatory operation for color separation of a color original by a color scanner in printing and plate making, at least an angle and a magnification of the color original image with respect to a pattern of an underlaying board, in scanner decomposing before preparation device for measuring the trimming range, before
The color original is attached, and the image of this color original is
And the angle out machine to scale on the block copy mount, out of this angle
A pattern of the underlaying board of the color original image in a printing machine
When measuring the angle, magnification, and trimming range for
While specifying points on the color original image,
Brightness instruction for color original image, highlight adjustment,
To set assist information for sharpness adjustment and color correction
And metrics which performs a point specified in order, and the scaling
The point specified by the indicator on the image is
A scaling converter for converting to coordinates on the manuscript ,
The color based on the point designation in the angle measurement
An angle calculator for calculating the angle of the original, and the indicator
Enlarge / reduce based on the point designation in the magnification measurement
Magnification to calculate the magnification for the color original when
Calculation section, and the trimming range measurement by the indicator
Based on the point designation of
A trimming setting unit for setting a trimming range, and the indicator
The brightness is indicated and the highlight
Assist information for color adjustment, sharpness adjustment, and color correction
An assist information setting section for holding the color original
When the cassette is mounted on the angle setting machine,
An identification sensor that reads the identification code of the set and this identification
From the identification code read by the sensor, the color
Judge the number of documents held, and for each color document,
Positioner that aligns color originals with the optical axis of the projection optical system
Control unit, the angle, the magnification, and the trimming range
Measurement, and the brightness instruction, the highlight adjustment,
The sharpness adjustment and the color correction
When the setting is completed, the projection optical system in the angle setting device
A lifting control unit for returning the scanner to an initial position,
First, store the color original according to the flow of preparations before separation.
When the cassette to be held is mounted on the angle setting machine
The identification code of the cassette by the identification sensor.
From the read identification code.
The number of held color originals is determined by the stateer control unit.
This color original is projected for each of the color originals.
Align with the optical axis of the shadow optics, then the angle, the magnification,
The trimming range is designated by the point, and then the
Brightness instruction, highlight adjustment, sharpness adjustment
Point, the point of the assist information of the color correction,
After this, each data obtained by specifying these points
As data for color separation in the color scanner.
Measurement of these angles, magnification, trimming range, and
Rusa instruction, highlight adjustment, sharpness adjustment, color correction
When the setting of the assist information is completed, the angle setting machine
The projection optical system in the initial position by the elevation control unit.
The device is a preparatory apparatus for disassembling a scanner.

[0017]

[0018]

[0019]

According to the first aspect, in printing and plate making, color printing is performed.
Preparatory work for color separation of originals with a color scanner
At least correspond to the pattern on the underlaying board of the color original image.
To measure the angle, magnification, and trimming range
Has a cassette that holds color documents attached to the angle setting machine
When the identification code of the cassette is
Read the positioner from this read identification code
The control unit determines the number of color documents held, and
For each color original, align this color original with the optical axis of the projection optical system.
Point, then point the angle, magnification, and trimming range.
And then adjust the brightness, highlight, sharpen
Point for assist information for color adjustment and color correction.
Later, each data obtained by specifying these points is
Data for color separation by color scanner
Measurement of angle, magnification, trimming range, and brightness finger
For highlighting, highlight adjustment, sharpness adjustment, and color correction
After setting the strike information, project
The optical system is returned to the initial position by the elevation control unit.

[0020]

[0021]

[0022]

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 preparatory device for a scanner is applied.

The angle setting device 1 has a CRT display 2
Is connected.

The angle setting device 1 and the preparatory data processing device 3 control the angle, magnification, and
And a function of measuring a trimming range, and a function of setting a brightness instruction and a color correction for a color original.

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.

A floppy disk 6 is interposed between the preparatory data processing device 3 and the color scanner 5. The color scanner 5 has a monitor C
An RT display 7 is provided.

Therefore, the color scanner 5 exchanges data with the preparatory data processing device 3 via the storage device 4 or the floppy disk 6.

Next, specific configurations of the angle setting device 1 and the preparation data processing device 3 will be described with reference to FIG.

In the angle setting machine 1, a tablet 11 is provided on a gantry 10 and a slide column 12 is provided upright. 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 are, for example, shown in FIG.
As shown in (a), holding one color original, same figure
As shown in (b), holding two color originals, same figure
Various types are prepared, such as one holding four color originals as shown in FIG.

Each of the cassettes 17 to 19 has an individual identification code Q formed thereon.

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.

A rack is formed on each Y-axis rail 24 provided on the lower surface of the Y table 22b, and each pinion 28 is screwed as shown in FIG. 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).

The 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 33 is provided on the Y table 22b on the cassette insertion port 20 side. As shown in FIG. 7, when the cassette 18 is inserted, the holding pin 33 rises in the direction of the arrow (a) to mount the cassette 18 on the Y table 22b. In addition, the movement of the cassette 18 is pressed and fixed.

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.

The tablet 11 has a coordinate reading function. That is, the tablet 11 includes the cursor index device 36, and has a function of generating a coordinate signal of the specified point when an arbitrary point on the tablet 11 is specified by the cursor index device 36.

On the right side of the tablet 11, a measurement item selection column 37 shown in FIG. 9 is formed.

The measurement item selection column 37 includes an angle (angle skip, angle OK, angle clear), a magnification (magnification OK,
Columns for selecting magnification clear) and a trimming range (full trimming, trimming OK, trimming clear) are formed.

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.

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 blank paper 38 may be slightly covered with a blue dye, and may be the same blank paper as the blank paper to be printed.

As a 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, and a cursor indicator 36 via an input unit 52.
And a keyboard 53, and a memory 54.

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 elevating 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 elevating instruction input from the keyboard 53 by a key.

In particular, the elevation control unit 55 measures the angle, magnification, and trimming range by a preparatory operation for color separation, and sends a signal from the main control unit 50 to end the setting of assist information such as a brightness instruction for a color original. Upon receipt, the projection optical system 13 has a function of returning it to an initial position, for example, a position 130 cm from the floor on which the angle setting device 1 is installed.

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 drives the pressing bars 31, 32 of the cassette mounting mechanism 21 against the cassette 18, drives the pressing pins 33 upward and drives the keyboard. 53
Each presser bar 31 receives a cassette take-out signal from
32 is driven out of the cassette 18 and the presser pin 33 is driven down to move the cassette 18 into the cassette insertion port 20.
It has the function of discharging toward.

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.

The angle calculating unit 57 calculates the point of the image of the color document 16 projected on the underlaying board and each point indicating the inclination of the reference side by the cursor indicator 36 from the coordinate signal of the color document 16. It has a function of calculating an angle.

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 indicator 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.

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, when “beautiful flesh color” is designated in the measurement item selection field 37, it has a function of adjusting at least the balance of yellow and magenta and correcting the red system.

When "beautiful sky" is designated, a function is provided to adjust at least the balance of magenta and cyan to correct the blue system.

When "beautiful green" is designated, a function is provided to adjust 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, it has a function to equalize the gray balance of the highlight area in the tone curve of the halftone dot with respect to the density.

When “beautiful shadow” is designated,
It has a function of adjusting the gray balance of the shadow area in the tone curve of the halftone dot with respect to the density.

When the image of the color document 16 is scaled up or down, the scale conversion unit 61 converts the point designated by the cursor indicator 36 on the scaled image into coordinates on the color document 16. Has a function.

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

This memory 54 is stored according to a 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 unit 62 and a transfer unit 63 are connected to the main control unit 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 the assist information such as the angle data, the magnification data, the trimming range data, and the “brightness instruction” stored in the floppy disk 6 or the storage device 4 and based on these data. The color document 16 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. For example, a photograph 71 of the color original 16 is designated as the underprint 70.

The color original 16 on which the photograph 71 is shown
, For example, a cassette 18 is prepared.

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 moved to 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 22 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 control unit 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.

The positioner controller 56 controls the driving of the X-axis motor 26 and each Y-axis motor 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 direction and the size of the projected image of the color document 16 are matched with the pattern of the photograph 71 specified on the underlaying board 70.

To match the image of the color document 16 with the pattern of the photograph 71, the projection optical system 7 is
5, the projected image of the color original 16 is enlarged by rotating the XY table 22, and the directions are made to coincide with each other by rotating the XY table 22.

When the image of the color document 16 matches the picture of the photograph 71 in this way, the cursor indexing device 36 indicates "magnification OK" in the measurement item selection field 37 on the tablet 11.

When a coordinate signal of "magnification OK" is generated by the instruction of the cursor indicator 36, the main controller 50 issues an operation command to the magnification calculator 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 this distance.

Next, when "OK" in the measurement item selection field 37 is designated by the cursor indicator 36, the angle
An operation command is issued to the calculation unit 57 .

Subsequently, as shown in FIG. 19, the range ABCD of the projected image of the color original 16 and the reference sides E and F of the underlaying board 70 are designated by the cursor indicator 36 as shown in FIG.
When the two points are designated, the angle calculation unit 57 proceeds to step #
8, the range ABC of the projected image of the color original 16
The angle α of the underlaying board 70 with respect to −D is obtained from each coordinate signal of the two reference sides E and F of the underlaying board 70.

Next, when "trimming OK" in the measurement item selection field 37 is designated by the cursor indicator 36,
An operation command is issued from the main control unit 50 to the trimming setting unit 59.

Subsequently, when the two points G and I of the trimming range are designated by the cursor index 13, the trimming setting section 59 sets the coordinate signals of the two points G and I of the trimming range at step # 9. , And the range A- of the projected image
A trimming range GHIJ of the image of the color document 16 is obtained based on the coordinates of BCD.

Here, the color original 1 on the tablet 11
The image of No. 6 is enlarged as shown in FIG.
The scaling converter 61 converts the coordinates of the point pointed by the cursor index 13 into coordinates on the color document 16.

For example, if the image of the color document 16 is enlarged three times, the designated coordinates X,
Y is converted into coordinates (X / 3, Y / 3) on the color document 16.

Next, assist information such as "brightness instruction" of the color document 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.

After that, the assist information setting section 60 sets the assist information in step # 10. 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, and the brightness of the 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 designated by the cursor indicator 36, an operation command is issued from the main control unit 50 to the highlight adjustment unit 60b.

This highlight adjustment can be set in, for example, seven steps.
The numerical values "1" to "7" in are set to seven levels, and the numerical values "1" to "7" are designated by the cursor indicator 36.

Therefore, 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.

The sharpness adjusting section 60c is configured as shown in FIG.
(B) is synthesized with the image signal of the color original 16 shown in (b) to obtain an image signal in which the sharpness is enhanced as shown in (c). The degree of sharpness at this time is obtained. Are set in three steps by the numerical values “1” to “3” of the measurement item selection field 37 by the cursor indicator 36.

Next, the color correction for the color original 16 is performed.

At the time of this color correction, the image of the color document 16 is projected on an enlarged white paper 38. That is, when performing the color correction, the point at which the color correction is performed is indicated by the cursor indicator 36.
When the image of the color document 16 is enlarged and projected, the point indicated by the cursor indicator 36 is not erroneously determined.

In this state, “beautiful flesh 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 The average of the ratio between yellow and magenta is obtained, and this average is compared with the reference ratio of “beautiful skin color (red system)” to obtain a coefficient. The coefficient is used to calculate the actual ratio (balance) between yellow and magenta.
The color scanner 5 corrects the color separation .

Here, the coordinates of each point designated by the cursor index device 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 flesh color" in this way, it is possible to print a human flesh color, in particular, a beautiful flesh color suitable for Japanese people, for example.

Next, the "beautiful sky" is indicated by the cursor indicator 36.
Then, in the image projected on the blank paper 8 placed on the tablet 11, the cursor correcting device 36 designates up to 10 points at which the “beautiful sky” is to be corrected. The average of the ratios of magenta and cyan at these 10 points is obtained, and this average is compared with the reference ratio of “beautiful sky (blue system)” to obtain a coefficient.
The color scanner 5 corrects the actual ratio (balance) between magenta and cyan at the time of color separation using these coefficients.

Here, the coordinates of each point designated by the cursor indicator 36 are converted into coordinates on the color document 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 displayed on the cursor indicator 36.
Then, in the image projected on the blank paper 8 placed on the tablet 11, the cursor correcting device 36 designates up to 10 points to correct “beautiful green”, and the color correcting unit 60 d 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) is corrected by the color scanner 5 at the time of color separation .

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 correcting section 60d displays
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, color separation yellow
(Y), magenta (M), cyan (C), or red (R), green (G), and blue (B).

[0125] Next, the "beautiful highlight" is designated by the cursor indication 36, the color correction section 60d has a gray balance of the highlight regions in the tone curve shown in the figure, color separation yellow (Y ), Magenta
(M), cyan (C), or red (R), green (G), and blue (B).

By adjusting the gray balance of 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 section 60d performs yellow (Y) color separation of the gray balance of the shadow area in the tone curve shown in FIG. Magenta (M), shi
Anne (C) separately, or red (R), green (G), blue (B)
Align each separately.

By adjusting the gray balance in the shadow area in this manner, when the color original 16 is printed, for example, a night scene is printed beautifully.

With the above, the setting of the assist information is completed.
When “registered OK” in the measurement item selection field 37 is designated by the cursor indicator 36, the main control unit 50 issues a termination instruction to the assist information setting unit 60.

Next, in step # 11, the main control unit 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 drive 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 documents 16 is completed, the main control unit 50 proceeds to step # 14.
Sends an end signal to the elevation controller 55.

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, it drives the holding bars 31 and 32 to separate from the cassette 18 and also drives the holding pins 33 downward to move the cassette 18 toward the cassette insertion slot 20. Let it drain.

As described above, since the projection optical system 13 is returned to the initial position and the cassette 18 is ejected, 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 coordinate conversion on the color document 16 by the enlargement / reduction conversion unit 61 is actually performed by the cursor indexer 36.
It is performed as needed for each point indicated by.

On the other hand, the main controller 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 transmits 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 color scanner 5 reads assist information such as angle data, magnification data, trimming range data, and “brightness instruction” stored in the floppy disk 6 or the storage device 4, and based on these data. Color separation is performed to create net negative digital data for each of R, G, and B, or net negative film for each of YMCK.

At this time, the color scanner 5 corrects and sets 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 embodiment, when the image of the color document 16 is enlarged and projected, and a point is designated by the cursor indexer 36 on the enlarged projected image, the point designated by the point is set to the color document 16. Since the coordinates are converted into the upper coordinates, for example, when the image of the color original 16 is reduced and projected on the underlaying board, or when the size of the color original is small, for example, 35 mm, the image of the color original 16 is almost enlarged without being enlarged. If the same size is projected onto the underlaying board, the image of these color originals is enlarged regardless of the pattern of the underlaying board, so that accurate point designation can be performed, and the angle And the trimming range can be measured.

In addition, the assist information “brightness instruction”, “highlight”, “sharpness intensity instruction” for the image of the color original 16, as well as “beautiful skin”, “align gray”, “beautiful highlight”, “beautiful shadow”, “beautiful” When "sky" or "beautiful green" is set, the point designated by the point is converted into coordinates on the color document 16, so that the image of the color document 16 can be enlarged, and accurate point designation can be performed.

[0147]

As described above, according to the present invention, the printing
Color printing with color scanner
As a preparatory work for color separation, at least
Color original image when the image is enlarged or reduced on the underlaying board
Angle, magnification and trimming range for the pattern of the underlaying mount
When measuring the
Judge the number of color documents held in the
For each color document, this color document is
An underlay for color original images that can be aligned with the axis
Precise angle, magnification, and trimming range for paper patterns
Specify the point, then the brightness for the color original image
Instructions, highlight adjustment, sharpness adjustment, color correction
The cyst information can be set accurately, and the color
The data can be used for color separation.
Measurement of degree, magnification, trimming range, brightness indication,
Illight adjustment, sharpness adjustment, color correction assist information
When the information setting is completed, the projection optical system
Can be returned to the initial position, and the cassette can be
It is possible to provide a scanner disassembly preparatory apparatus which can be easily operated.

[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.

FIG. 23 is an external view of an angle setting machine.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Angle setting machine, 3 ... Preparation data processing device, 4 ... Storage device, 5 ... Color scanner, 6 ... Floppy disk, 11 ... Tablet, 12 ... Slide prop, 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-62-247373 (JP, A) JP-A-2-309354 (JP, A) JP-A-5-197036 (JP, A) (58) Fields studied (Int .Cl. ⁷ , DB name) H04N 1/38-1/393 G03F 1/00

Claims (1)

(57) [Claims] 1. A printing-plate making as preparation before color separation of the color original by a color scanner, angular and lateral relative to the pattern of the layout paper base sheet of at least the color original image, in a scanner decomposing before preparation device for measuring the trimming range The color original is mounted, and the image of this color original is
An angle setting machine for enlarging / reducing the size of the original under the printing plate;
Measures the angle, magnification, and trimming range for the picture on the mount
When point is specified on the color original image when
In both cases, the brightness instruction for the color original image
Assist information for light adjustment, sharpness adjustment, and color correction
An indexer for specifying points to set, and a point on the scaled image by the indexer
Scaling conversion for converting specified points to coordinates on the original
Based on the point designation in the angle measurement by the indicator
An angle calculation unit for calculating the angle of the color original , based on a point designation in the magnification measurement by the indicator.
Magnification for the color original when enlarged and reduced
And a point in the trimming range measurement by the indicator.
Trimming range for the color document based on designation
A trimming setting unit for setting the brightness finger in response to a point designation by the indicator.
For highlighting, highlight adjustment, sharpness adjustment, and color correction
The assist information setting unit for setting the text information and the cassette for holding the color original
Reads the identification code of the cassette when mounted
An identification sensor and the identification code read by the identification sensor.
Determine the number of color documents to hold and
To align the color original with the optical axis of the projection optical system.
A measurement control unit and the angle, the magnification, the measurement of the trimming range, and
The brightness instruction, the highlight adjustment, the sharpness
Setting of the assist information for color adjustment and color correction is completed.
Then, the projection optical system in the angle setting device is set to the initial position.
And a lift control unit for returning the scanner.
-The cassette holding the original is attached to the angle setting machine
The identification code of the cassette when the
Read by a sensor, the read identification code
From the position of the color original by the positioner control unit.
Judge the number of pages you have
Align the draft with the optical axis of the projection optics, then the angle,
The magnification and the trimming range are designated by the point,
Next, the brightness instruction, the highlight adjustment, and the
Point adjustment information and color correction information
After that, the points
The data for color separation by the color scanner.
Measurement of these angles, magnification, and trimming range.
Setting, brightness instruction, highlight adjustment, sharpness adjustment
After setting the assist information for adjustment and color correction,
The projection optical system in the indexing device is controlled by the elevation control unit.
Ri return to the initial position, the scanner decomposing before preparation device, characterized in that.