JP3146857B2 - 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 having a function of setting a color correction on an original image as a preparatory work for separating a color original by a scanner in printing and plate making.

[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.

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 print the color of the picture of the color document as a color print as it is, but for example, requests that the brightness of the picture be brighter than that of the color document or that the picture be sharpened. There is.

[0009] In order to respond to the request of such a print requester, for example, a color scanner corrects the brightness of a picture of a color original and the sharpness intensity of the picture, for example.

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 and set on the color scanner, and thereafter, the brightness of the pattern of the color original is adjusted by the color scanner. And so on.

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.

For this reason, in addition to the measurement of the magnification, the angle, and the trimming range, color correction such as brightness adjustment is performed by looking at the projected image of the color original.

[0013]

However, when performing a color correction operation while looking at a projected image of a color original, it is impossible to perform appropriate color correction unless the colors of the projected image are accurately captured.

In order to perform the appropriate color correction, a gray balance composed of a ratio of yellow, magenta, and cyan is important, and human vision is sensitive to the gray balance. For example, Japanese tend to prefer blue-gray slightly biased toward blue, and it is necessary to correct the color in consideration of this.

However, under the current state of color correction, such color correction in consideration of human vision is not performed, and it cannot be said that appropriate color correction has been performed.

Accordingly, an object of the present invention is to provide a scanner pre-disassembly preparation apparatus capable of performing appropriate color correction.

[0017]

According to a first aspect of the present invention, there is provided a scanner pre-disassembly preparatory apparatus for projecting an image of a document on a projection surface and setting at least color correction assist information for the document. This is a scanner disassembly preparatory apparatus that attempts to achieve the above object by arranging a white material on the surface.

According to a second aspect of the present invention, in a scanner pre-disassembly preparation apparatus for projecting an image of a document on a projection surface and setting at least color correction assist information for the document, the document image is projected on the projection surface. And a white light source disposed on the projection surface of the document image.

According to the third aspect, when at least the gray balance of the image of the document is adjusted, white light emitted from a white light source is irradiated on the document image and projected onto a white material.

According to the fourth aspect, when adjusting at least the ratio of yellow to magenta to the image of the original,
The white light emitted from the white light source is irradiated on the original image and projected on a white material.

According to the fifth aspect, the white material is blue gray slightly biased toward blue.

According to the sixth aspect, the white material is a metal plate or a plastic plate coated with a white dye.

According to the seventh aspect, the white material is the same white paper as the white paper on which the picture of the document is printed.

[0024]

According to the first aspect, the image of the document is projected onto a white material on the projection surface, and at least the color correction assist information for the document is set in this state. Since the color is corrected by looking at the projected image on the white material as described above, appropriate color correction can be performed.

According to the second aspect, the original is irradiated with white light emitted from the white light source, and the image of the original is projected on a white material. If at least the color correction assist information for the document is set in this state, appropriate color correction can be performed.

According to the third aspect, the original image is projected onto a white material, and at least the gray balance of the original image is adjusted.

According to the fourth aspect, the original image is projected onto a white material, and at least the ratio of yellow and magenta to the original image is adjusted.

According to the fifth aspect, by using blue-gray slightly biased toward blue as a white material, it is possible to perform appropriate color correction suitable for the visual sense especially in Japanese.

According to the sixth aspect, by using a metal plate or a plastic plate coated with a white dye as a white material, appropriate color correction can be performed.

According to the seventh aspect, by using the same white paper as the white paper for printing the picture of the original as the white material,
Appropriate color correction can be performed.

[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 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.

Accordingly, 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 is formed with an individual identification code Q.

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.

This 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 side of the cassette insertion opening 20. 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.

The cassette 1 is attached to the cassette mounting mechanism 21.
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 the tablet 1
When an arbitrary point on 1 is designated, it has a function of generating a coordinate signal of the designated point.

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

The measurement item selection field 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 white paper 38 may be a paper slightly coated with a blue dye, and the same white paper as the white paper to be printed may be used.

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 section 50 composed of a CPU via a display drive section 51, and a cursor indicator 36 via an input section 52.
And a keyboard 53, and a memory 54.

In accordance with a command issued from the main control unit 50, 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 scaling conversion unit 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 with a key.

In particular, the elevation control unit 55 measures the angle, magnification, and trimming range by preparatory work 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 section 56 detects the insertion of the cassette 18, and presses the pressing bars 31, 32 of the cassette mounting mechanism 21 against the cassette 18, raises the pressing pins 33, and presses 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 calculator 57 calculates the point of the color document 16 projected on the underlaying board and each point indicating the inclination of the reference side from each coordinate signal when the cursor indexer 36 indicates the point. 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.

A 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.

As shown in FIG. 13, 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.
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, a function is provided for adjusting at least the balance of magenta and cyan to correct the blue system.

When "beautiful green" is designated, a function is provided for 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, 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 a point designated by the cursor indicator 36 on the scaled image into coordinates on the color document 16. have.

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

The main control unit 50 is connected to an output unit 62 and a transfer unit 63. 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, magnification data, trimming range data, and “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 configured 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 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 control section 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 control section 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 projected image of the color document 16 has the same direction and size as the picture of the photograph 71 specified on the underlaying board 70.

In order 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 according to 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, an operation command is issued to the magnification calculator 58.

Subsequently, as shown in FIG. 19, the range ABCD of the projected image of the color document 16 and the reference sides E and F of the underlaying board 70 are designated by the cursor indicator 36 as shown in FIG.
Are designated, the magnification calculator 58 determines in 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 in 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 conversion unit 61 converts the coordinates of the point designated by the cursor index 13 into coordinates on the color document 16.

For example, if the image of the color document 16 is magnified 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" for 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.

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

Accordingly, the brightness instructing section 60a reads the numerical value indicated by the cursor indicator 36, and selects a 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, for example, in seven stages, and a desired highlight can be set in the measurement item selection field 37.
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 designated 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 original 16 is projected on the 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 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 to perform the correction of the "beautiful flesh color", the color correcting unit 60d outputs Yellow component and maze
Each concentration with the counter component is indicated by the cursor indicator 36.
From the color document 16 based on the coordinates
The average of the numerical ratio between yellow and magenta is calculated, 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. to correct.

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, 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. Magenta at these 10 points
And the respective densities of the cyan component and the cyan component to the cursor indexer 36.
Read from color document 16 based on coordinates specified by
The average of these numerical ratios of magenta and cyan
Because, determine the coefficient by comparing the reference ratio of the mean and "beautiful sky (blue system)," the actual magenta This coefficient, to correct the ratio between the cyan (balance).

In this case as well, 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 indicated by the cursor indicator 36.
Then, in the image projected on the blank paper 8 placed on the tablet 11 and designated by the cursor indexer 36 up to 10 points where the correction of "beautiful green" is performed, the color correction unit 60d Death in these 10 points
The cursor indicators 36 indicate the respective concentrations of the Ann component and the Yellow component.
From the color original 16 based on the coordinates designated by
And calculate the average of these numerical ratios of cyan and yellow.
Therefore , this average is compared with a reference ratio of “beautiful green (green system)” to obtain a coefficient, and the coefficient is used to calculate the actual cyan,
Corrects the ratio (balance) with yellow.

If the correction of “beautiful green” is performed 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 is adjusted for each of red (R), green (G), and blue (B) for color separation.

Next, when "beautiful highlights" is designated by the cursor indicator 36, the color correction 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 correcting section 60d converts the gray balance of the shadow area in the tone curve shown in FIG. Green (G) and blue (B) are arranged separately.

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

Thus, 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 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 controller 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 controller 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 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, the cassette 18 can be easily taken, for example, in a comfortable posture. The initial position of the projection optical system 13 can be set arbitrarily.

Next, the main controller 50 converts the coordinates of each point designated on the tablet 11 into coordinates on the color original 16 by the scaling converter 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 carried out every time according to instructions by.

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 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, in the color scanner 5, the work of correcting and setting the assist information of “beautiful skin color”, “beautiful sky”, “beautiful green”, “gray is aligned”, “beautiful highlight”, and “beautiful shadow” is performed. Almost no need.

As described above, in the embodiment, the blank paper 38 is placed on the tablet 11, the image of the color original 16 is projected on the blank paper 38, and the setting of the assist information for the color original 16 in this state. Therefore, the color of the image on the color document 16 can be accurately captured, and appropriate color correction can be performed.

Human vision is sensitive to gray balance. Unless the gray balance is white, accurate colors cannot be recognized.

In particular, Japanese people tend to prefer blue-gray, which is slightly biased to blue. Therefore, by adopting a white paper 38 slightly covered with a blue dye, it is possible to obtain an accurate image that is suitable for Japanese people. Assist information can be set and colors can be corrected.

For example, by designating “beautiful flesh color”, the red color, in particular, human flesh color can be corrected to, for example, a beautiful flesh color suitable for Japanese sense. For example, corrections can be made to a healthy skin tone, a black burnt skin tone, or a dirty skin tone.

In addition, by specifying “beautiful sky”,
For example, it can be corrected to a beautiful sky like a clear deep blue,
Further, by designating "beautiful green", a green system, in particular, a fresh green color of a landscape can be corrected, for example, as a vivid fresh green.

Furthermore, the gray balance of the middle tone area in the tone curve of the halftone dot with respect to the density can be made uniform by designating “align gray”, and the gray balance of the highlight area can be made by designating “beautiful highlight”. By specifying “beautiful shadow”, the gray balance of the shadow area can be made uniform.

The same effect as described above can be obtained by using not only the blank paper 38 but also the same blank paper to be printed.

As the white material, a metal plate or a plastic plate coated with a white dye is optimally used, and accurate color correction can be performed.

[0162]

As described above in detail, according to the present invention, it is possible to provide a scanner disassembly preparatory apparatus capable of performing appropriate color correction.

[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, 11 ... Tablet, 13
... Projection optical system, 14 ... Positioner, 16 ... Color original, 17-19 ... Cassette, 36 ... Cursor indicator, 3
7: Measurement item selection column, 38: Blank paper, 39: White light source, 5
0: Main control unit, 54: Memory, 55: Elevation control unit, 56
... Positioner control unit, 57 ... Angle calculation unit, 58 ... Magnification calculation unit, 59 ... Trimming setting unit, 60 ... Assist information setting unit, 60a ... Brightness instruction unit, 60b ... Highlight adjustment unit, 60c ... Sharpness adjustment unit 60d: color correction unit, 61: enlargement / reduction conversion unit, 70: underlaying board.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04N 1/60 H04N 1/46

Claims (7)

(57) [Claims] 1. A pre-scanner disassembly preparatory apparatus for projecting an image of a document on a projection surface and setting at least color correction assist information for the document, wherein a white material is arranged on the projection surface of the document image. A scanner pre-disassembly preparation device. 2. A pre-scanner disassembly preparatory apparatus for projecting an image of a document on a projection surface and setting at least color correction assist information for the document, wherein a white color for projecting the document image on the projection surface is provided. A pre-scanning disassembly preparatory apparatus, comprising: a light source; and a white material disposed on a projection surface of the document image. 3. The method according to claim 1, wherein when adjusting at least the gray balance of the image of the document, white light radiated from a white light source is irradiated on the document image and projected on a white material. Preparation equipment for scanner disassembly. 4. The method according to claim 1, wherein when adjusting the ratio of at least yellow and magenta to the image of the document, white light radiated from a white light source is irradiated on the document image and projected onto a white material. The preparatory device for disassembling a scanner according to claim 1. 5. The apparatus according to claim 1, wherein the white material is blue-gray slightly biased toward blue. 6. The apparatus according to claim 1, wherein the white material is a metal plate or a plastic plate coated with a white dye. 7. The scanner pre-disassembly preparatory apparatus according to claim 1, wherein the white material is the same blank paper as the blank paper on which the picture of the document is printed.