JPS61141448A - Method and device for applying original image in scanner - Google Patents

Abstract

PURPOSE:To apply an original image in a desired angle by adjusting a projection magnification and the position and angle of an original image fixing arm so as to locate the desired dupliction region of the projected image of the original image just in the trimming frame of a layout sheet, and moving it as it is onto an input drum. CONSTITUTION:The original image 19 is projected on the layout sheet 26 with a desired angle and a desired magnification at the time of applying one or more original images 19 onto the input drum 11 in accordance with a rectangular region corresponding to the trimming frame depicted in advance on the layout sheet 26, and the position of the original image fixing arm is adjusted so as to accord the desired duplication region 28 of the original image with the trimming frame, and said arm is moved onto the input drum while the angle is kept in this state, and the original image is applid to the input drum with the desired angle without adding a standard point or standard value on the original image, thus permitting the scanning region of the original image to be designated with high accuracy and good efficiency from the position control data of the image fixing arm, and the data of the rectangular region corresponding to the trimming frame.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a method and apparatus for pasting one or more original images onto an original image pasting sheet to be attached to a plate-making drum or an input drum; More particularly, the present invention relates to a method and apparatus for determining the position of a cropping frame that is a desired scanner scan area within an original image.

(Prior Art) Conventionally, in a scanner for plate making, when determining a trimming frame for an original image pasted on an input drum or when pasting an original image onto an input drum in accordance with the output angle of the original image, C is used.
Display the trimming frame on the layout sheet using the R7 screen, photoelectrically scan the original image with a scanner input section, TV camera, etc., and input the image signal of the original image to display the original image on the CR7 screen. The positional relationship between the trimming frame on the layout sheet and the original image is determined by moving it on the screen.

In this method, a reference point or reference line is provided on the original image in order to relatively match the origin of the original image with a corresponding point on the layout sheet, and a reference point or reference line is provided on the original image in order to paste the original image onto the input drum at the required angle. It is necessary to set a line, but for example, when setting a reference point or reference line in the original drawing by one person, there is a problem that it is difficult to ensure the accuracy of the position, and there is also a problem that it is difficult to maintain the accuracy of the position. Also, the work of pasting the original image onto the input drum based on the reference point or reference line was troublesome. moreover,
There is a device that projects the original image onto a layout sheet and confirms the angle and magnification at which it should be reproduced. There is a problem where the trimming frame for the original picture cannot be determined.

OBJECTS OF THE INVENTION The present invention provides a method for maintaining a desired angle when pasting one or more original images to the input drum of a scanner without providing a reference point or reference line on the original image.
Another object of the present invention is to provide an original image pasting method and device that automatically determines trimming of an original image.

(Means for Solving the Problem) In a scanner, one or more original images are pasted at a desired angle on the input drum or an original image pasting sheet attached to the input drum, and each original image is scanned in the desired scanner scanning area. In order to determine the trimming frame, the original image mount, which can be rotated to any angle and moved in the X-axis and Y-axis directions, holds the original image on an arm.

Parallelograms parallel to the Using the known data at the time of creating the layout sheet, the original image is automatically or manually positioned at an appropriate location within the imaging possible area of the optical system that projects the image onto the layout sheet, and then the layout sheet is created. To mount the original image while holding the original image in the trimming-compatible rectangular area of After confirming that the original image is located exactly at From the position, the amount of movement of the original image is measured by a sensor, and the position of the trimming frame of the image is calculated from the amount of movement, the coordinates of a known trimming-compatible rectangular area on the layout sheet, and the reproduction magnification.

(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.

In FIG. 1, a transparent glass stand (3) is fixed to an original image attachment part (2) located at the upper right corner of a main body (original image pasting device) (1).

An optical system (5) for projection imaging having an optical axis (R) that intersects with the glass table (3) at a proper point includes a light source (6) and a condenser lens (7) arranged above the glass table (3). It consists of a zoom lens (8), etc. arranged below the glass stand (3).

The input drum (11) of the scanner, which has been removed from the scanner body, is rotatably installed in the recess (9) formed on the left side of the original image attachment section (2).
A rotary encoder (13) that measures the amount of rotation of the input drum (11) from a reference point is disposed on the bearing (12) of (1). This input drum (11).

When pasting of the original image (19) is completed, it is removed from this device and used by being attached to the scanner body.

When installing the input drum (11) in the scanner body, the rotational position of the input drum (11) completely matches the position where it is fixed in the bearings (12) and (12') of the original image pasting device (1). Can be installed in any way. 1. For example, a positioning groove is provided on the axis of the input drum (11), while the bearings (12) (12') of the original image pasting device (1) and the input drum of the scanner body are attached completely to this groove. What is necessary is to provide a linear convex portion that matches the .

A rear end portion of a first slide member (15) extending in the front-rear direction is attached to a left-right guide rail (14) fixed to the upper rear portion of the main body (1) so as to be slidable in the left-right direction.

The first slide member (15) has a second slide member extending in the left-right direction.
The right end of the slide member (16) is attached so that it can slide freely in the front and back direction, and the arm (17) for attaching the original picture is attached to the left side of the second slide member (16), and
It is rotatably mounted around the first part (S).

The original image is attached to the rear edge of the arm (17), and the original image (19) is attached with adhesive tape or the like and held by a member (21).

The amount of movement of the first slide member (15) in the left-right direction is.

The second slide member (16) is measured by a rotary encoder (22) installed near the guide rail (14).
) in the front-rear direction is the amount of movement of the first slide member (15).
It is measured by a rotary encoder (23) disposed at.

A layout sheet stand (25) is supported by a rail (not shown) on the bottom cutout (24) at the bottom of the main body (M-image pasting device) (1) and is movable in the left-right direction and front-back direction. has been done. A layout sheet (26) shown in FIG. 2 is mounted on the layout sheet stand (25), and this layout sheet (26) has one or more original drawings (19) as shown in FIG. A trimming frame (28) that defines the desired size and magnification to be replicated), the position and orientation (angle) of the shape, and a parallelogram (referred to as a trimming compatible rectangular area) circumscribing this and parallel to the X-axis or the y-axis. )
(27) The center point and origin of the rectangular area corresponding to trimming are drawn in advance using an automatic drawing machine or the like. Therefore, the coordinates of the four corners and the center of the rectangular region (27) for trimming are known in advance. The reason for drawing the trimming compatible rectangular area (27) that circumscribes the trimming frame (28) of the layout sheet (26) is that a scanner normally scans a rectangular area, so the original image in Figure 3 (
This is to obtain the desired scanning area (trimming frame) (29) (19).

Next, the operating procedure of the original image pasting device configured as described above and the coordinate relationship between the positions of the original image, the layout sheet, the input drum, etc. will be explained.

Returning to Figure 1, first attach the original picture (19), and attach adhesive tape to the appropriate place on the arm (17) to attach the original picture to the member (21).
) to paste. If the original picture (19) is of the transmission type, the film surface should face downward and the upper part (top) of the picture should, in principle, be located on the far side of the original picture pasting device (in the negative direction of the Y axis) as shown in Figure 1. Paste it like this. At this time, the layout sheet (26
It is preferable that the image of the original picture (19) projected onto ) is an erect normal image.For this reason, the projection imaging optical system (5) uses a zoom lens (8) to capture the image of the original picture (19) once. The imaged object is then re-imaged using another lens (not shown). If the original image (19) is a reflective type, the operating procedure will be different and will be explained later. First, a commonly used transmission type original image will be explained. Layout sheet (26
) is designed to keep the positional relationship between the layout (26) and the layout sheet stand (25) constant even if the layout sheet stand (25) moves.
) during operation by vacuum suction, etc.
The center points (Q, ~Q4) (hereinafter referred to as Q) of one or more trimming compatible rectangular areas (27) of the layout sheet (26) are sequentially aligned with the optical axis (R) of the main body (1). do. If the positioning is to be performed automatically, first align the origin of the layout sheet (26) mounted on the layout sheet stand (25) with the origin of the main body (1), and then use an automatic drafting machine etc. to position the layout sheet (26). The position of the optical axis (R) is determined by the driving means using the positioning value of the center point (Q) of the trimming compatible rectangular area (27) at the time of creation. Since it is at a fixed position relative to the object, it can be done by projecting a pinhole or using a pointer as a reference.

In this way, among the one or more trimming-compatible rectangular areas (27) of the layout sheet (26), first the first trimming-compatible rectangular area (27) (the original image attached to the arm (17) is 19)) is aligned with the optical axis (R). In this state (as shown in Figure 3), move the arm (17) to attach the original image, and place the layout sheet (26) at the desired magnification to reproduce the original image (19).
When projected upward, the original image (19) projected within the trimming compatible rectangular area (27) of the layout sheet (26)
The part marked with is the desired original image scanning area (trimming frame) of the scanner.0 With this device, if the magnification at which you want to reproduce the original image (19) is determined in advance, use that magnification; if that magnification has not been determined, use the projection magnification. Original drawing while adjusting (19)
Adjust the position and angle of the arm (l) to attach the original image so that the desired duplication area (29) of the layout sheet is exactly within the trimming frame (28) of the layout sheet (26). A desired scanning area (original image trimming frame) of the scanner can be determined from the rectangular area (27). To attach the original image at this position, read the X and Y coordinate values of the arm (17) from the rotary encoders (22) and (23), and manually or automatically transfer the X and Y coordinate values to the main body (
1) Temporarily stored in the storage device (memory, floppy disk, etc.) inside the calculation bag [(30)]. This is data for determining the desired scanning area (28) of the original image (19) on the input drum (11) of the scanner or on the original image pasting sheet attached to the input drum (11) of the scanner.

Below, a method for determining the desired scanning area (image trimming frame) (29) of the original image (19) by the scanner will be described.

Assuming that the coordinates of the center point (Q) of the trimming-compatible rectangular area (27) on the layout sheet (26) are (Ihy)'x), two points ( pt=pi) are equal, so the X-direction component and the X-direction component of this distance are respectively expressed as Δ
If X and Δy, point P1. The coordinates of P are (see Figure 4) Pt(Xz-ΔX,'l□-Δy)
(1) Pg (Xt+Δx, y, +Δy)
(2) becomes.

On the other hand, the coordinates of the point where the optical axes (R) intersect on the original image are (X').

y'), the original image is attached to the arm (17) in order to determine the trimming frame (29) of the original image (19) as described above.
The coordinates of the two points (P'', pg') (hereinafter abbreviated as points pz'tpz') on the diagonal of the trimming frame (29) of the original image (19) when the position is determined and closed are p, #( xj once, y'~-AZ) m m (3) Ps'(X' + dan* '!''+AL)
(4) m m Here, m is the replication (projection) magnification, and ΔX and Δy are (1).

The value is the same as in equation (2). From this layout sheet (
From the trimming compatible rectangular area (27) of
19) The above trimming frame (29) can be calculated.

The above is a layout sheet (
26) The center point of the trimming compatible rectangular area (27) is
In this example, the image (9) and the trimming frame (28) of the layout sheet (26) match the image (9) and the trimming frame (28) of the layout sheet (26). The correspondence relationship is calculated, so it can be matched anywhere.
For example, one corner of the rectangular area for trimming of the layout sheet (26) may be aligned with the optical axis (R).

Next, the 71st stroke (19) is transferred to the input drum (11) of the scanner.
, and determine the position of the trimming frame (29) of the original image (19) on the input drum (11).

As mentioned above, the original image is attached by adjusting the angle and position of the arm (17) while projecting the original image (19) onto the layout sheet (26) at the desired magnification to reproduce the original image (19).
is pasted onto an appropriate position on the input drum (11) of the scanner, and the position of the trimming frame (29) of the original image (19) on the input drum (11) is determined. As mentioned above, the original picture (
19) onto the layout sheet (26) at the desired magnification, the original image is attached by adjusting the angle and position of the arm (17) until the desired reproduction area (trimming frame) of the original image (19) is on the layout sheet (26). ) trimming frame (28
), the original image mount locks the rotation of the arm (17) and reads the rotary encoder (22) (23) at that position (XO
, Y*) in a storage device within the computing device (30).

Next, as shown in Figure 5, move the original image (19) onto the input drum (11) of the scanner, and place it at an appropriate location on the input drum (an arbitrary area of the original image (19) that is not pasted). Paste the original picture (19) with adhesive tape, etc., and use the rotary encoder (22) (23) (13) at that position.
).

Generally, when moving the original image (19) onto the input drum (11), the optical axis (R) and the extension line of the axis of the input drum (11) should intersect or be close to each other. (With the apparatus shown in Figures 1 and 6, both the transmission type original image and the reflection type original image can be input to the input drum (1
1), the former position is preferable.)
Rotary encoder (22) (23) ノ(X'
, Y') as (A, B), and the desired amount of movement from the origin of the X-axis and Y-axis around the input drum (11) (rotate until the original image (19) is not pasted).
If (C) is the reading of the unit movement of the rotary encoders (22) and (23), the reading of the unit movement of the rotary encoder (13) regarding the rotational movement of the input drum (11) is the same. It is preferable that

The explanation will be given assuming that they are the same, but if they are different, you can convert them), and the trimming frame (19) of the original picture (19) shown in Figure 5.
The coordinates of the two points (Pi”, pg”) on the diagonal line of 29) (hereinafter abbreviated as points P□#, p, H) are (the extension line of the optical axis (R) and the axis of the input drum (11) If they intersect, the amount of movement (B) of the rotary encoder (23) is 0. Note that the fifth example shows an example in which the amount of movement (B) has a certain value.) ΔX p□''( x, ---A, Y, -Ax-+B+C)
(5) mm Pa'(X1+ --h, Y1+ A-x-+B+C
) ΔX m m (6), and the scanner's Kugata drum (11
) can determine the trimming frame (29) of the original picture (19) pasted. Therefore, as described above, the trimming-compatible rectangular area (27) of the layout sheet (26)
The coordinate values of the two points (pt, P, ), the readings of the rotary encoders (13), (22, and Calculate the trimming frame (29).

Although the above description has been made regarding the transmission type in which 1M images are commonly used, the present invention can also be applied to 9 reflection type original images by making the following partial changes. That is, in the apparatus shown in FIG. 1, two light sources (6') are provided on the left and right sides at appropriate positions approximately 45@ with respect to the optical axis (R) on the layout sheet (26) side. In addition, as shown in Figure 6, the input drum (11
) is fixed to the reflective original image bearing (12').

When the original image (19) is a reflection type original image, the input drum (11) is arranged so that the lower end of the drum is on the plane of movement of the arm (17) for attaching the original image, as shown in FIG.

This is used to attach a reflective original (19) upside down on a glass stand (3) (with the image surface facing downwards) on the arm (1).
7) and is projected onto the layout sheet (26) by illuminating it with a reflective light source (6'). After positioning, the input drum (11) is held at the same angle as the input drum (11).
This is to ensure that the image surface of the reflective original image (19) maintains an accurate position facing outward with respect to the input drum (11) when pasting it at an arbitrary position on the input drum (11). For this purpose, the input drum bearing (12) for the 1 reflection restoration image (19)
') is provided. Of course, the amount of rotation of the bearing (12') of the input drum for the reflection type original image (19) is the same as the amount of rotation of the bearing (12) of the input drum (11) for the transmission type original image (19). 13), the origins of the bearings (12) and (12') of both quad drums are made to coincide, and their rotation amounts are always made to be the same.

If the original picture (19) is a reflective type, the original picture (19) is
When attaching the original picture 19) to the arm (17), as a general rule, the top and bottom of the picture should be reversed. However, it is desirable that the image projected onto the layout sheet (26) be an erect image, and therefore only when pasting a single reflection type MWi is a doped prism in the optical system.
■), etc., and turn the image upside down (top and bottom).

After making such changes, in the same way as the transparent original image, the desired duplication area (cropping frame) (29) of the original image (19)
is within the trimming frame (2) of the layout sheet (26).
8), adjust the projection magnification equal to the reproduction magnification and the position and angle of the am attachment arm (17), and at that position, the original image attachment locks the arm (17) and For original image installation, after determining the X and Y coordinates of the arm (17), for original image installation holding the original image (19), the arm (17) moves to the empty area of the input drum (11) (original image (1
9) Move to any area where is not pasted) and paste it. At this time, the original reflection type painting (19).

Paste it so that its image surface faces outward from the input drum (11). This is because the image pickup of the scanner is performed from outside the input drum (11). Reflection type original image (19) on the subsequent input drum (11) surface
The position of the trimming frame (29) can be calculated in the same manner as in the case of a transparent original.

When pasting a reflective original (19), a transparent original (19)
) There is another point that must be taken into consideration. This is the input drum (1
1) To make sure that the top and bottom of the original image are the same as the top and bottom when pasting the transparent original image, when attaching the reflective original image (19) to the arm (17), the MWi installation should be done in the 6th position.
As shown in the figure, when pasting the original picture (19) on the original picture pasting sheet attached to the input drum (11), for example, in Figure 1, the glass stand (3) is used instead of the input drum (11). A flat base that can vacuum adsorb the original image pasting sheet and a register pin for positioning are provided on the same plane as the original image pasting sheet, and when the original image pasting sheet is attached to the input drum (11), the origin of the input drum (11) and the input The position of the register pin for 1 positioning may be set so as to coincide with the origin of the original image pasting sheet attached to the drum (11).

In addition, when calculating the position of the trimming frame (29) of the original image (19) in the Y-axis direction on the input drum (11), it is calculated from the readings of the two rotary encoders (13) (23), but it is not necessary to paste the original image. To find the position of the trimming frame (29) of the original picture (19) in the Y-axis direction on the printing sheet.

It can be calculated only from the reading of the rotary encoder (23).

As described above, create one or more layout sheets (26
) is pasted onto the input drum (11) or original image pasting sheet at the angle specified by the trimming frame (28), the position of the trimming frame (29) of each original image is determined, and only the desired duplication area is photoelectrically scanned. , if the images are recorded in sequence at the designated positions on the layout sheet (26), there is no need to perform layout work again.

As explained above, according to the present invention, one or more original images are placed at a desired angle on the input drum of the scanner or on the original image pasting sheet attached to the input drum, without inserting a reference point or reference line in the 1M image. Not only can it be pasted, but also the trimming frame of the original picture can be calculated accurately in the pasted state.

(Effects of the Invention) According to the present invention, when pasting one or more original images onto an input drum or an original image pasting sheet attached to the input drum according to a trimming-ready rectangular area drawn in advance on a layout sheet, and at an appropriate location within the imageable region of the optical system for projection imaging.

The original image is projected onto the layout sheet at the desired angle and magnification, and the angle is maintained by adjusting the position of the arm so that the desired reproduction area of the original image matches the trimming frame on the layout sheet. In this state, the original image is attached by moving the arm onto the input drum or original image pasting sheet, and pasting it onto the input drum or original image pasting sheet at the desired angle without placing a reference point or reference line on the original image. In addition, the original image attachment has the effect of efficiently specifying the scanning area (trimming frame) of the original image from the position adjustment amount of the arm and the drawing data of the automatic drawing machine with high precision. In addition, if one or more original images are pasted along the layout sheet (erected image), you will need to record each original image in the position corresponding to each trimming frame on the layout sheet, and then perform the layout work again. disappears.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an original image pasting device in which the method of the present invention is carried out; FIG. 2 is an open country showing an example of a layout sheet; and FIG. 3 is a plan view of an arm for attaching original images. FIG. 4 is a plan view of a rectangular area for trimming on a layout sheet. FIG. 5 is a plan view showing the positional relationship between the original image mounting section and the input drum. FIG. 6 is a perspective view showing a state in which a reflective original image is pasted by the original image pasting device. (1) Main body (2) JJI image mounting section (5) Optical system for projection imaging (R) Optical axis (8) Zoom lens (11) Input drum (15) First slide section (16) Second slide Parts (1
)) The original image is attached to the arm (S) Rotating part (19) Original image (25) Layout sheet stand (
26) Layout sheet

Claims (2)

[Claims] (1) Paste one or more original images at desired angles onto the scanner's input drum or an original image pasting sheet to be attached to the scanner's input drum, and determine the position of each trimming frame, which is the desired scanning area. In the method of The rectangular areas corresponding to trimming are sequentially positioned at locations within the imaging possible area of the optical system for projection imaging, and the projected image is projected so that the desired reproduction area of the projected image of the original image is exactly located within the trimming frame of the layout sheet. After adjusting the magnification and the position and angle of the original image mounting arm and determining the X and Y coordinates of the original image mounting arm position, hold the original image at that angle and place it on the input drum of the scanner or place it on the original image. It is moved onto the sheet and pasted on the input drum or the original image pasting sheet, and the amount of movement from the projection position of the original image to the pasting position of the original image, the coordinates of the rectangular area corresponding to trimming on the layout sheet, and the reproduction magnification. A method for pasting an original image in a scanner, characterized by calculating the position of a trimming frame of the scanner on an input drum for the original image or on a sheet for pasting the original image. (2) Paste one or more original images at a desired angle onto the input drum of the scanner or an original image pasting sheet to be attached to the input drum of the scanner, and position the trimming frame, which is the desired scanning area, for each original image. In the device for determining the original image, an original image mounting arm that can hold an original image, rotate it at any angle, and move in the X- and Y-axis directions, an optical system that projects and images the original image onto a layout sheet, and a device that is specified on the layout sheet. a positioning means for sequentially aligning the trimming-ready rectangular area for reproduction of the original image with an appropriate position within the imageable area of the optical system for projection imaging; and a projection magnification equal to the reproduction magnification and an original image mounting arm. Adjust the position and angle so that the desired reproduction area of the projected image of the original is exactly located within the trimming frame of the layout sheet, then place the original on the input drum of the scanner or on the original pasting sheet while maintaining that angle. A sensor device that determines the amount of movement of the original image mounting arm to the point where it is moved and pasted on the input drum or the original image pasting sheet, the amount of movement of the original image mounting arm, the coordinates of the rectangular area corresponding to trimming on the layout sheet, and the replication magnification. An original image pasting device in a scanner, comprising: and a calculation device for calculating the position of a trimming frame of the scanner on an input drum for original images or on a sheet for stuffing original images.