JPS60227260A - Setup method - Google Patents

Abstract

PURPOSE:To adhere a color original to a color scanner drum at the angle corresponding to a format by adhering the color original to a color scanner drum in accordance with the positional information of a color original holding plate. CONSTITUTION:The format is projected from below to the surface of a digitizer table 11 along a specified reference line 12a and the color original is placed on the surface of the table 11. The magnification and angle of the color original image are matched with the format image. The positional information on the necessary separating setup point in the color original and the positional information on the color original holding plate 23 for transferring the color original from the table 11 to the color scanner drum 20 are read. The operator transfers the color original onto the circumferential surface of the drum 20, adheres the color original to the prescribed position on the drum 20 according to the positional information on the plate 23 and moves the scanning head and color scanner drum 20 in accordance with the positional information on the separating setup point thereby setting the adequate setup value.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a set-up method performed prior to disassembly work using a color scanner), and in particular to a method for setting up a color document at an angle according to its appearance, and at the same time Disassembly setup point (
This invention relates to a method for easily and accurately determining the highlight, middle, and shadow areas.

Conventionally, color scanners have been known that have a so-called editing function, that is, a multipage collection function, which performs color separation and layout at the time of final finishing. In order to load a document into a scanner that processes color separation and full-wave stacking at the same time, the document must be placed in a predetermined position relative to the baseline of the scanner's document drum according to the final layout. It needs to have an angle.

The reason for this is that when the document 2 is mounted on the document drum 1 straight with respect to the base line 3 of the document drum as shown in FIG. 1, after being scanned, the IV! An image 6 exposed onto a film 5 placed on the optical drum 4 also becomes an image straight with respect to the base line 7 of the exposure drum 4.

Therefore, in order to fully utilize the functions of this scanner for simultaneously processing color separation and layout, an image 8 oblique to the base line 7 of the exposure drum 4 is required, as shown in FIG. When the original 2 is placed on the original drum 1,
It is desirable to attach the document drum 1 obliquely to the base line 3 of the document drum 1. This is because when such a scanner body scans a document and then exposes the film on the exposure drum 4, the scanner itself has a function that rotates the scanned image at an arbitrary angle relative to the document before exposing it. Even if the angle rotation is performed by the computer that processes the information for the page collection, problems such as an increase in the capacity of the computer itself and an increase in processing time will occur, so it is not possible in terms of cost and time. This is because it is also disadvantageous.

In addition, setup work is performed prior to color separation work, but conventionally, the conditions for the separation set-up points (highlights, middle areas, and shadow areas) are set after the color original is set on the color scanner drum. Because the light source is manually applied to the desired point each time, the operator cannot leave the machine, which is not good in terms of work efficiency. It is difficult to set accurately, and as a result, there is a problem that the print loss rate upon disassembly usually reaches 15 to 20 inches.

This invention was made in view of my own selfish concerns,
At the same time as measuring the magnification of a color document, it is possible to mount the color document on the color scanner drum at the correct angle, and it is also possible to easily and accurately determine and locate any separation set-up point in the color document. The purpose is to provide a setup method for

That is, in this method, the format is projected from below onto the digitizer table surface along a certain reference line, and then a color document is placed on the table surface, and the magnification and angle of the color document image are determined by the formatting device. a color IM>m holding plate that transfers the position information of the necessary separation set-up point in the color document and the color document from the denotizer table to the color scanner drum using a position indicating means in this matched state; The position was set as the coordinates based on the coordinate reference point on the digitizer table, and then the angle was maintained using the color IM document holding plate. The color document is transferred onto the peripheral surface of the color scanner drum whose rotation axis is parallel to the reference line, and the color document is transferred to The color original is pasted at a predetermined coordinate position on the circumferential surface of the scanner drum, and then, based on the positional information of the disassembly set-up point, a light beam is irradiated from the light source in the color scanner drum to the predetermined set-up point. The present invention provides a setup method characterized by moving a scanning head and a color scanner drum, detecting a signal level at a valley setup point, and setting an appropriate setup point.

The present invention will be described below with reference to illustrated embodiments. In Fig. 3, No. 1 is a denotizer table with a reflective surface such as white and a grid-like wiring on the back side for electrically reading coordinate points, and the position is indicated on the table 11. This can be done by placing and sliding a cursor 9, for example, to read and memorize the desired coordinate position. Note that on the surface of this digitizer table 11, there is a reference line 12a along one side thereof.

Furthermore, an origin 12b of the projection plane, an X-axis '12c that determines the X-coordinate based on this origin 12b, and a Y-axis 12d that similarly determines the Y-coordinate are provided.

Note that the origin 12b, the X-axis 12c, and the Y-axis 12d may be moved as necessary. Furthermore, a plurality of reference lines 12a may be provided in a predetermined direction. Note that, instead of providing this reference line 12a on the table 11, a corresponding line may be provided on the appearance fixing plate 15, which will be described later. This table 11 is fixed to a frame 13, and a projection lens 14 is also attached to the frame 13 below through a bellows 10. Below this projection lens 14 is the table 11.
An appearance fixing plate 15 is provided parallel to the plane. A base line 16 parallel to the reference line 12d on the table 11 is provided on the top surface of the appearance fixing plate 15, and is parallel to the front and rear and left and right directions (that is, the XY plane) along a pair of jars 7'r17.1B that are orthogonal to each other. It is designed to be movable.

Further, a color scanner drum support device 19 held on the side surface of the frame body 13 is provided on one side of the table 11, and the color scanner drum 20 is supported so that its axis (or reference line 28) is aligned with the reference on the table 11. It is rotatably and detachably supported so as to be parallel to the line 12h. Note that the support device 19 is not limited to the illustrated example, and can be attached to the frame 13 at any other arbitrary position. Further, in front of the table 11, a shaft 21 is provided, one end of which is fixed to a part of the frame 13, and which extends up to 20% of the color scanner drum in parallel with the reference line 12m of the table 11. A base end portion of a rotary arm 22 that is freely movable in the axial direction is pivotally supported on this via an encoder 31. Furthermore, a document holding plate 23 is fixed to the tip of the rotary arm 22 for holding a color document using tape or a suction tube. The encoder 31 is used to determine the coordinate position of the reference point 32 (the center of the cross mark) on the upper surface of the document holding plate 23. These rotating arms 22. Color scanner drum support device 19. The projection lens 14 and the table J1 are integrated into the appearance fixing plate 1.
By moving vertically up and down in five directions, or by moving the appearance fixing plate 15 up and down in the same direction as the lens 14, or by moving both up and down, the distance between them is set four times, It is possible to specify the magnification for the format layout of a color document. A pair of light sources 24 are provided diagonally above the form fixing plate 15 to illuminate the form fixed on the form fixing plate 15.

Next, a description will be given of the document positioning field for the color scanner drum, the φ°C extraction of desired trimming information from a color document using this denotizer device, and the setup method.

First, the format 25 is positioned on the format fixing plate 15 so that the pair of registration marks 26 between them are parallel to the reference line 16 or the reference line 12a, and fixed with tape or the like. The appearance 25 fixed in this way is illuminated by the light source 24,
The image is projected onto the digitizer table 1 through the lens 14 (see Figure 4). Next, the color original 27 is placed on the digitizer table 1, the format fixing plate 15 or the frame 13 supporting the lens 14 is moved up and down, and the format fixing plate 15 is moved in an X direction.

The color original 27 is moved in the Y direction to adjust the magnification and focus of the color original 27 and the predetermined insertion section 25' in the projected image 25 while bringing it closer to the center of the lens 14, and the color original 27 is placed at an angle on the table 11.

Match the one elephant with the principal amount (see Figure 5)
.

In this state, move the digitizer cursor 9 onto the color original 27, read the coordinates of the desired trimming range in the original 27, and store this trimming information in a storage device (not shown). let

Disassembly set Araff India (highlight part, middle part,
Regarding the shadow portion), the coordinates of the moromi India selected in advance in the color original 27 are read using the cursor 9,
This information is stored in a storage device (not shown).

Next, the rotary arm 22 is moved along the shaft 21, and then the color document holding plate 23 is rotated onto the table 11, and the color document 27, which has been positioned as described above, is attached to the tape or suction signal in that state. It is held by a holding plate 23.

In this state (see FIG. 6), the origin 12b of the projection surface on the digitizer table 11 and the reference point 32 of the original holding plate
The distance between the two points in the X and Y directions is determined by the encoder 31 and displayed on the XY coordinate display device 33. That is, when the rotating arm 22 passes the origin setting microswitch 34 (set on the extension of the Y-axis 12d) shown in FIG. 6, the X direction is automatically set to zero, and the Y coordinate is automatically set to zero. Extending the rotating arm 22,
Since the reference point 32 is automatically set to zero when it coincides with the X axis 12c, these XI
The moving distance in the Y direction can be accurately read by the encoder 3 provided at the intersection of the shaft 21 and the rotary arm 22.

The rotating arm 22 holding the color original 27 is then moved along the shaft 21 onto the color scanner drum 20. Y on the surface of this color scanner drum 20
A coordinate reference line 35 and an X coordinate reference line 36 are provided,
The point of intersection of these is the origin 37. Further, another origin setting microswitch 38 is provided near the shaft 21 on the extension of the Y coordinate reference line, and the rotating arm 2
2 passes through this point, the value of the X coordinate is automatically set to zero. For Yfl of this drum 20, the rotary arm 22 is expanded and contracted according to the size of the scanner drum 20, and the reference point 3 of the document holding plate is
2 coincides with the X coordinate reference line 36, it is automatically set to zero. The rotation angle of the color scanner drum is also set to zero when the reference point 32 of the document holding plate coincides with the X-way marker reference line 36.
This is read by a rotational angle reading encoder 39 provided on one side of the scanner drum 20, the distance in the Y direction is read by this rotational angle reading encoder 39, and this is automatically converted into curved surface coordinates. is preferred. Note that even if the color scanner drum 20 is replaced with one of a different size, the relationship with the rotation angle can be automatically converted.

In this way, the coordinate position of the reference point 32 of the document holding plate on the color scanner drum 20 can be automatically read and displayed on the XY coordinate display device 40.

Therefore, the coordinates when the reference point 32 of the original holding plate coincides with the origin 12b on the projection image, and the coordinates when this reference point 32 coincides with the origin 37 on the color scanner drum 20 (generally (0) , 0)) are the same, the color original 23 can be placed on the curved surface coordinate position on the color scanner drum 20 with the same coordinate position as the color original 23 on the projection surface on the digitizer table 11. Can be pasted. Therefore, in this state, trimming and set-up can be automatically performed based on the trimming information and disassembly set-up point information read in advance as described above.

Next, this setup operation will be explained using a specific example.

First, as shown on the left side of FIG. 6, it is assumed that the color original 27 matches the appearance image projected onto the projection surface of the notizer table 11 at the angle shown. In this state, the original 27
The disassembly set-up point set during (i.e.
The coordinates of the highlight portion, middle portion, and shadow portion (all not shown) on the projection plane are taken as 12bt-origin by the cursor 9 and displayed on the XY coordinate display device 41. These coordinates are then pointed to with the cursor 9 and input into a storage device (not shown).@ Next, the rotating arm 22 is moved to transfer the color original 27 to the original holding plate 23. The coordinates of the reference point 32 of the document holding plate 230 at this time are displayed on the XY coordinate display device 33, and similarly, these are input into a storage device @ (not shown). The rotary arm 22 is then moved along the shaft 21 into the scanner drum 20. At this time, the rotating arm 22
When the coordinates in the X direction pass through the origin setting microswitch 38, the coordinates in the X direction are automatically converted to the X coordinates on the color scanner drum 20.

Therefore, the X displayed on the XY coordinate display device 33 first
The rotating arm 22 can be moved to the same X coordinate position as the coordinate value.

The Y coordinate on the scanner drum 2o is determined by extending and contracting the rotary arm 22 so that the reference point 32 of the document holding plate 23 coincides with the reference line 36 of the drum 20, and setting the coincident angle as the zero angle. The rotation angle is read by the encoder 39, and the XY coordinate display device 4 displays the curved surface coordinates.
The Y coordinate value displayed at 0 is operated so as to match the Y coordinate value previously displayed on the XY coordinate display device 33.

After aligning the X and Y coordinates in this manner, the color original 27 is transferred onto the color scanner drum 20 at that position and fixed with tape or the like.

This color scanner drum is then attached to a color scanner and used for color separation.

Next, the scanning head and color scanner drum are moved so that a predetermined set-up point can be irradiated with a beam of light from the light source in the scanner drum 20 based on the coordinate information of the set-up point input in advance into the storage device. It is possible to detect the signal level at each set-up point and set an appropriate set-up value.

An example of a method for setting this setup value will be explained with reference to FIG. Note that although the following explanation uses the setting of highlight points as an example, it is of course possible to set 7 Yado points and middle points in the same manner.

In FIG. 7, 51 is a light sensor, 20 is a color scanner drum, 27 is a color document, 54 is a scanning head, 55 is a photoelectric conversion element, 56 is a log circuit, 57 is an average value circuit, 58 is a color computer, 59 160 is a lead screen motor, 6 is a cylinder rotation motor, 62 is an exposure cylinder, 63 is a motor control unit, 64 is a display meter, and 65 is a mirror.

First, the scanning head and the color scanner drum are moved so that a predetermined highlight point in the color document 27 is irradiated with the light beam from the light source 1. The light beam irradiated onto this highlight point is reflected by the mirror 65 and reaches the photoelectric conversion element 55. The photoelectric conversion element 55 generates a signal according to the amount of light received, and after being subjected to predetermined processing in the log circuit 56 and color computer 58, the halftone dot (' or density) at the virtual highlight point is displayed on the display meter 64. . Note that the light flux for scanning is extremely small at 20 μm to 100 μm, so the light flux is spread 201t vertically and horizontally around the coordinate value of the highlight point in proportion to the spot diameter.
It is preferable to move rn~10011 m to obtain a highly accurate signal. The plurality of signals thus extracted from the scanning spot via the scanning head are subjected to processing such as counting, storage, and averaging in an average value circuit 57, and the average value is calculated. After this average value is processed by the color computer 58, the halftone dots (or density) corresponding to the average value are displayed on the display meter 64.

Next, it is sufficient to determine the highlight set-up based on this display value and proceed with the normal set-up work.

As described in detail above, according to the present invention, it is possible to measure the magnification of a color document and at the same time affix the color document to the color scanner drum at the angle of the appearance.
Furthermore, any separation set-up point in a color document can be determined easily and accurately.

[Brief explanation of the drawing]

Figures 1 and 2 are perspective views illustrating the relationship between the angle and output when attaching a color original to the original drum, and Figure 3 is a perspective view of the attachment of a color original to the original drum, and Figure 3 shows the attachment of the original to the color scanner drum used in the method of the present invention. 4 and 6 are plan views showing a part of the device shown in FIG. 3 for explaining the present invention in detail. FIG. FIG. 2 is a block diagram showing an example of an upload method. 1... Original drum, 2... Original, 3... Base line, 4
...Line drum, 5...Film, 6...1 artist, 7...Base line, 8...Image R elephant, 9...Carnol,
11... Projection plate, 12a... Reference line, 12b...
Origin, 12c...X axis, 12d...Y axis, 13...
・Frame body, 14... Projection lens, 15... Fixed foot version, 16... Base line, 17. 18... Shaft, 19.
...Color scanner drum support device, 20...Color scanner drum, 21.Pashaft, 22.Rotating arm, 23.Document holding plate, 24.Light source, 2
5... Format, 26... Registration marks, 27...-Color original, 28... Reference line, 3... Encoder, 32...
・・Document holding plate reference point, 33, 40° 41 ・XY coordinate display device, 34 ・Micro switch, 35 ・・
Y coordinate reference edge, 36... X coordinate reference line, 37... Origin, 38... Micro switch, 51... Light source, 5
4... Scanning head, 55... Photoelectric conversion element, 56... Log circuit, 57... Average value circuit, 58
...Color computer, 59...IJ-1'
Screw, 60... Scanning head movement motor, 62... Exposure cylinder, 63... Motor control unit, 64... Display meter, 65...
mirror. Patent attorney Suzue Takehiko Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 213526 No. 2, Invention name set assozo method 3, Relationship with the Nagisa case for amendment Patent applicant (319) Toppan Printing Co., Ltd. 4, Agent April 30, 1985 7, Details of amendment page 19 In the 6th line, "Fig. 4 and Fig. 6" should be corrected to "Fig. 4, Fig. 5, and Fig. 6".

Claims (1)

[Claims] Project the format from below onto a digitizer table along a certain reference line, then place a color original on the table surface, match the magnification and angle of this format image with the color original image, and in this matched state , the position information of the necessary separation set-up point in the color document and the position information of the color document holding plate for moving the color document from the desotizer table to the color scanner drum are determined by the coordinates on the digitizer table using a position indicating means. tffe is taken as a coordinate based on the reference point, and then the color original is transferred onto the circumferential surface of a color scanner drum whose rotation axis is parallel to the reference line while maintaining the above angle using the color original holding plate. At the same time, based on the positional information of the color document holding plate read on the digitizer table, the color document is pasted at a predetermined coordinate position on the circumferential surface of the color scanner drum, and then,
Based on the location information of the disassembly setup point above,
Moving the scanning head and color scanner drum so that a light beam from the light source inside the color scanner drum irradiates a predetermined set-up point, detecting the signal level at each set-up point, and setting an appropriate set-up value. A set-up method featuring: