JPH0658524B2 - Document angle / magnification calculator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is applicable to plate making from an original such as a photographic film.
The present invention relates to a device for calculating the angle, magnification, etc. of this document.

2. Description of the Related Art Conventionally, there is known a device for automatically making a plate for color printing, that is, a color scanner, from a photo film or other original document. The color scanner optically scans a document attached on a drum, color-separates the reflected light, detects the reflected light, and electronically processes it to automatically perform plate-making for each color.

When performing plate making with such a color scanner, the tilt angle, magnification, trimming, etc. of the document are calculated in advance, and the document is attached to the drum at an angle corresponding to the above tilt angle, and the magnification, It is necessary to input trimming etc. to this color scanner.

In addition, it is possible to store and process the image signal obtained by scanning the above-mentioned document, electronically perform all the rotation, magnification conversion, trimming, etc., and electronically collect one page of printed matter. There is also a layout scan. However, in such a layout scanner, electronically performing rotation, magnification conversion, etc. of the original image requires a long time for the processing and causes a problem such as deterioration of image quality. Even when using, the tilt angle, magnification, etc. of the document can be calculated in advance, and the document can be pasted onto the drum at a specified angle, as in the case of the color scanner, and the magnification, trimming, etc. can be input in advance. desirable.

Conventionally, in order to calculate the angle and magnification of the original document in this manner, the image of the original document is projected by a projection device onto the designated layout sheet, and the magnification of the projected image is adjusted, and the designated layout sheet is rotated. And the layout frame of the layout-designated paper are made to correspond to each other, and the angle and the magnification at the time of plate making of this original document are indexed from the rotation angle of the layout-designated paper and the magnification of the projection device in this state. However, such work is inefficient because it depends on availability, and there is a problem that the accuracy is low. Further, when the image of the original is projected on the layout-designated sheet, the shadow of the operator's hand is projected on the layout-designated sheet, which causes a problem of troublesome work.

[Problems to be Solved by the Invention] The present invention has been made based on the above circumstances, and the angle of a document that can automatically calculate the angle, magnification, etc. of the document and can efficiently perform the work. -The purpose is to provide a magnification calculation device.

[Means for Solving Problems and Actions Thereof] According to the present invention, a transparent digitizer is provided on the upper surface of the workbench main body, and an original photographing mechanism is provided on the side of the transparent digitizer. The projected original image is projected on the lower surface of the transmissive digitizer by a projection mechanism at an arbitrary magnification, and the transmissive allocation designation paper placed on the transmissive digitizer is rotated to generate the allocation frame and the projected image. In this state, the layout designation paper and the reference points of the projected image are designated by the cursor of the digitizer, and the original of this original when making a plate from this original by the signal processing circuit from the position coordinates of these points and the magnification of the projected image. The angle of
The magnification, trimming, etc. are automatically calculated.

Therefore, these angles and magnifications can be calculated automatically,
Further, since the image of this document is projected from the lower surface of the transmission digitizer, the shadow of the operator's hand is not reflected, and the work is efficient and accurate. Further, since the original photographing mechanism is arranged on the side of the transmission type digitizer, many originals can be exchanged quickly, which is extremely efficient in performing such work.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show a first embodiment of the present invention. 1 in the figure
Is a workbench main body, and the workbench main body 1 has a desk shape, and the height and the like are set to a dimension such that an operator can sit and work efficiently in front of it. A transparent digitizer 2 is provided on the upper surface of the workbench body 1. Then, a transparent layout designation paper 40 is placed on the transmission type digitizer 2, and an image of the original document projected from the lower surface of the transmission type digitizer 2 and a layout frame 42 of the layout designation sheet 40 are placed as will be described later. Are configured so that they can correspond to each other.

Further, a document photographing mechanism 3 is provided on the side of the transmission type digitizer 2, for example, on the left side. The document photographing mechanism 3 is provided with a transparent document placing surface 4, and the document 30 is placed at a predetermined position on the transparent document placing surface 4. A lid 5 is provided on the document photographing mechanism 3 so as to be openable and closable. Illumination lamps 6 and 7 are provided inside the lid 5 and below the document placing surface 4, respectively. If the original 30 is a transmissive type such as a photographic negative film, the original 30 is illuminated by the illumination lamp in the lid 5, and the original 30 becomes a positive film or opaque paper. When the drawn illustration is of a reflection type, the original 30 is illuminated by the illumination lamp 7. Further, below the document placing surface 4, a lens 8 for taking an image of the document 30 is provided.

Then, the image of the original document 30 photographed by the lens 8 is projected by the projection mechanism 15 into the transmission digitizer 2 described above.
Is configured to be projected on the lower surface of the. The projection mechanism 15 includes two reflecting mirrors 9 and 10 and a projection lens 11, and an image of an original image photographed by the original document photographing mechanism 3 is reflected by these reflecting mirrors 9 and 10, and these original documents are reflected. It is configured to pass through the optical path below the photographing mechanism 3 and the transmission type digitizer 2 and to be projected on the lower surface of the transmission type digitizer 2 by the lens 11. The lens 11 is moved up and down by a magnification changing mechanism 12 so that the magnification of the original image projected on the transmission digitizer 2 can be arbitrarily changed. In addition, a linear encoder or the like is built in the magnification changing mechanism 12 so that a signal corresponding to the position of the lens 11, that is, the magnification of the projected image is output. A box-shaped horizontal optical path cover 13 is provided on the bottom of the workbench main body 1, and the horizontal optical path cover 13 and the transmission digitizer 2 are provided.
Vertical optical path cover 1 that forms an inverted pyramid between the lower surface and
4 are provided. An optical path for transmitting the image of the original 30 is formed in these covers, and the reflecting mirrors 9 and 10, the lens 11, the magnification conversion mechanism 12 and the like are also accommodated in these covers. In addition, these covers 1
Reference numerals 3 and 14 are set to have a shape and dimensions that do not interfere with the feet of an operator (not shown) sitting in front of the workbench body 1.

A cursor 20 is connected to the transmissive digitizer 2 described above, and when the cursor 20 is used to specify the layout designation paper 40 placed on the transmissive digitizer 2 and the reference point of the projected original image. The position coordinates of these designated points are detected.
In addition, the keyboard 2 is installed at the corner of the transparent digitizer 2.
1 is provided so that data such as a document number can be input.

The position coordinates of a point designated on the transmission digitizer 2, the signal from the keyboard 21, the magnification signal from the magnification conversion mechanism 12, and the like are input to a signal processing circuit 22. . This signal processing circuit 2
2, the magnification angle, trimming, etc. at the time of plate making of the original 30 are calculated based on these input signals, and the calculation result is displayed on the CRT 23. Further, the result of this arithmetic processing is the drawing device 24 such as an XY plotter.
It is configured to display these data in the form of numbers, reference lines, etc. on the label 33 attached to the original document 30 and attached to the above. Further, the operation processing result in the signal processing circuit 22 is sent to a floppy disk device 25 and recorded on a floppy disk (not shown).

Next, the operation of this device will be described with reference to FIGS. First, FIG. 3 shows an example of the original 30.
In the case of this example, this original is a 35 mm film 31, and 32 is its screen. In this case, the picture on the screen 32 is inclined with respect to the horizontal direction of the screen 32. A label 33 is attached to the lower edge of the 35 mm film 31. Further, the layout designation paper 40 is semi-transparent, and a reference mark 41 called a register mark is displayed, and a layout frame 42 indicating a position where the picture of the original is to be printed is also displayed.

Then, first, the document 30 is placed at a predetermined position on the document placing surface 4 of the document photographing unit 3, and the lid 5 is opened. At the same time, the layout-designating paper 40 is placed on the transparent digitizer 2. Since the original 30 in this case is of a transmissive type, it is illuminated by the illumination lamp path in the lid 5. The image of the original 30 is the lens 8
The captured image is reflected by the reflecting mirrors 9 and 10, and is projected onto the transmission digitizer 2 from below by the lens 11.

Then, the operator associates the captured image with the allocation frame 42 of the allocation designation paper 40, operates the magnification changing mechanism 12 to change the size of the projected image, and adjusts the size corresponding to the allocation frame 42. Adjust to. In addition, this allocation designated paper 40
Is rotated so that the allocation frame 42 and the angle of the picture of the projected image 31 'of the original are matched as shown in FIG.

Then, the cursor 20 of the transmission type digitizer 2 is used to designate a reference point of the image 31 'of the original document, for example, two lower corners P0 and P1 of the screen 32'. At the same time, the reference points of the allocation frame 42 of the allocation designation paper 40, for example, the three points P2, P3 and P4 at the corners thereof are designated. Further, a reference point of a picture of the image 31 'of the original, for example, a point P5 at the edge of the picture when the picture is a ship.
Is specified. Then, the position coordinates of each of these designated points are sent to the signal processing circuit 22. Also,
The magnification signal from the magnification changing mechanism 12 is also sent to the signal processing circuit 22. Further, the keyboard 21 is operated so that the number of the original 30 and the like can be displayed in the signal processing circuit 22.
To enter.

Then, in the signal processing circuit 22, based on these input signals, the angle formed by the original image and the layout designation paper 40, that is, the angle when the original 30 is attached to the drum such as a color scanner, and the original of the original. Magnification, further, whether or not trimming of this original document and the trimming range are calculated. Then, the calculation result is once stored, then displayed on the CRT 23, sent to the floppy disk device 25, and recorded on the floppy disk.

Next, the above-mentioned document 30 is removed from the document photographing mechanism 3 and mounted on the drawing machine 24 at a predetermined position. The calculation result is sent to the plotter 24, and the angle of the original is drawn on the label 33 as a reference line 34 inclined corresponding to this angle as shown in FIG. Number 3
Numbers such as 6 are also drawn. Then, the original 30 is removed and attached to the drum of the color scanner. In this case, since the angle of the original document 30 is drawn as the reference line 34, if the reference line 34 is attached so as to match the reference line of the drum, the original document will be inclined at a predetermined angle on the drum. It can be pasted. Along with this, the floppy disk is taken out from the floppy disk device 24, and information such as magnification and trimming recorded on the floppy disk is input to the color scanner. Therefore, when scanning the original document 30 with the color scanner, scanning is performed at a predetermined magnification, and only a necessary range within the trimming range is scanned, so that the operating efficiency of the color scanner is improved.

In the above case, the layout frame of the layout-designating paper is rectangular, but the above-described work can be performed even when the layout frame is another polygon, a circle, an ellipse, or the like. For example, as shown in FIG. 5, when the layout frame 43 is a pentagon, the reference points P2 and P3 such as the register marks 41 of the layout designation paper 40 are designated, and the two points at the lower corner of the screen 32 'are designated. P0, P1 and each vertex P of this allocation frame
By designating points 4, P5, P6, P7, and P8, the angle, magnification, trimming, etc. of the document can be calculated in the same manner as above.

In the first embodiment, as described above, the angle, magnification, trimming, etc. of the original can be calculated simply by designating the original image on the transmission digitizer 2 and the reference point of the layout-designating paper with the cursor, and the work is efficient. is there. In addition, since the transparent digitizer 2 is provided on the upper surface of the workbench main body 1 on which an operator can sit and work, and the document projection unit 3 is provided on the side of this, the work is efficient. Further, since the image of the original is projected on the lower surface of the transmission type digitizer by the projection mechanism, the operator's hand does not become a shadow, and the work is extremely efficient and accurate.

The present invention is not limited to this first embodiment. For example, FIGS. 6 and 7 show a second embodiment of the present invention. In this device, the lens 8a of the document photographing mechanism, the reflecting mirrors 9a and 10a of the projection mechanism, and the lens 11a are tilted so that the optical path is tilted in the direction away from the worker, that is, the other side when viewed from the worker. Since this optical path is inclined, the optical path cover 50 is inclined almost horizontally and the space 51 for accommodating a worker's foot is widened, so that the posture of the worker is eased. In addition, this is a lens 8a
Although the image of the document 30 photographed in step 1 is shortened vertically, it is extended vertically when this image is photographed, so that the image projected on the transmission digitizer 2 is not distorted.

Further, FIG. 8 shows a third embodiment of the present invention. This is an optical fiber 6 capable of transmitting an image to a projection mechanism.
The image picked up by the lens 8b of the original photographing mechanism is transmitted by the optical fiber bundle 60 and is projected on the lower surface of the transmission type digitizer 2 by the lens 11b. With this, the optical fiber bundle 60 can be bent into an arbitrary shape, and the space occupied by the path for image transmission can be reduced.

Furthermore, FIG. 9 shows a fourth embodiment of the present invention. This is equipped with a television camera 70 as an image capturing mechanism, and a flat liquid crystal image display device in which an image of the original document 30 captured by the television camera 70 is arranged below the transmission digitizer 2 via an interface circuit 73. The image is sent to the image display device 74 and displayed on the image display device 74. Since this one converts an image into an electric signal and transmits it, the structure of this image transmission path is further miniaturized.

Further, the present invention is not limited to the above-mentioned embodiments, and for example, a zoom lens may be used as a lens of the projection mechanism, and in this case, it is not necessary to move this lens up and down.

[Effects of the Invention] As described above, according to the present invention, the angle, magnification, etc. of a document can be automatically calculated only by pointing the cursor to the projected image of the document and the reference point on the designated layout sheet. Further, since the image of the document is projected from the lower side of the transmission digitizer provided on the upper surface of the workbench main body, the shadow of the hand of the worker is not projected, and the work is efficient and accurate. Further, since the original document photographing mechanism is provided on the side of the transmission type digitizer, the worker can quickly exchange the original documents while sitting in front of the workbench device, which greatly improves the work efficiency. The effect is great.

[Brief description of drawings]

FIGS. 1 and 2 show a first embodiment of the present invention.
The figure is an overall perspective view, and FIG. 2 is a schematic configuration diagram. Also,
FIG. 3 is a plan view showing an example of a document, and FIGS. 4 and 5 are explanatory views of the operation. FIGS. 6 and 7 show a second embodiment of the present invention, FIG. 6 is a schematic configuration diagram, and FIG. 7 is a vertical sectional view of a transmission digitizer portion. Further, FIG. 8 is a schematic configuration diagram of the third embodiment, and FIG. 9 is a schematic configuration diagram of the fourth embodiment. DESCRIPTION OF SYMBOLS 1 ... Worktable main body, 2 ... Transmission digitizer, 3 ... Original image pick-up mechanism, 8 ... Lens, 9, 10 ... Reflecting mirror, 11 ... Lens,
15 ... Magnification changing mechanism, 20 ... Cursor, 22 ... Signal processing circuit, 24 ... Plotter, 30 ... Original, 40 ... Layout designation paper

Claims (6)

[Claims] 1. A workbench main body in front of which a worker can perform work, a transmissive digitizer provided on the upper surface of the workbench main body, and a side of the transmissive digitizer. The original image capturing mechanism that captures the image of the original document, and the image of the original document captured by the original document capturing mechanism can be projected onto the transparent digitizer from the lower side of the transparent digitizer at any magnification. And a signal processing circuit to which a magnification signal from the projection mechanism and a signal at a designated position coordinate on the transmission digitizer are input. The image of the original projected on the digital digitizer is made to correspond to the layout designated paper placed on this transmission digitizer, and in this state the reference points of these images and layout designated paper are set. Angle and scale factor calculation device of a document can be calculated the angle and the magnification at the time of plate-making from the original by a constant. 2. The projection mechanism comprises a lens and a reflecting mirror, and projects an image of the original document onto the transmission type digitizer through an optical path below the document photographing mechanism and the transmission type digitizer. The document angle / magnification calculation device according to claim 1. 3. The optical path stands vertically between a box-shaped horizontal optical path cover formed horizontally on the bottom of the workbench main body and from the horizontal optical path cover to the lower surface of the transmissive digitizer. The apparatus for calculating an angle / magnification of an original document according to claim 2, wherein the apparatus is formed inside a box-shaped vertical optical path cover provided. 4. An apparatus for calculating an angle / magnification of a document according to claim 2, wherein the optical path is formed so as to be inclined in a direction away from an operator. 5. The document angle / magnification calculation apparatus according to claim 1, wherein the projection mechanism includes an optical fiber bundle for transmitting an image of the document. 6. The original document projection mechanism includes a television camera for taking an image of the original document, and the projection mechanism is provided below the transmissive digitizer and displays an image of the original document taken by the television camera. An original document angle / magnification calculation device according to claim 1, further comprising a flat liquid crystal image display mechanism.