JPH05241723A - Graphic reader and graphic positioning pin plate - Google Patents

Abstract

(57) [Abstract] [Purpose] It is intended to improve the operability and efficiency of setting the origin of the reading coordinates when reading a figure such as an original in a figure data input apparatus such as a figure reading apparatus. [Structure] Reflective illumination type or transmission illumination type drawing board, X-
A figure reading device provided with a figure reading index portion integrally attached to a movable bracket that can be moved and scanned in the Y direction, and a light or magnetic detection section that is integrally attached to or detachable from the movable bracket or figure reading index portion, and a positioning pin 10 or a plate 9 for providing a graphic positioning pin plate having a light emitting portion 11, a light transmitting portion, or a magnetism generating portion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a figure reading device for plate making, drafting, mask cutting and the like.

[0002]

2. Description of the Related Art Generally, when a manuscript is placed on a processing table such as a block drawing machine or a mask cutting machine used in the printing industry to perform a process such as drawing or mask cutting, it is necessary to input a numerical value. Figure / coordinate data, rough layout manuscripts for editorial designers, handwriting, pen drawing by a drafting machine, positive printing by electronic typesetting machine or film printing, negative printing, (~
Among them, there is a document or film copy taken by a camera or scanned by a scanner to make a film, except for the film output of an electronic typesetting machine. In the case of the manuscript excluding the above, in the plate making process, the manuscript is read and input by some reading means, and 1) a clear copy (preprint) and 2) a plate making mask,
3) Either of the layout data to be passed to the total scanner is created. As the reading means, a coordinate reading device generally called a digitizer or a tablet of an electromagnetic induction type, a rail encoder type, etc. is used.

[0003]

DISCLOSURE OF THE INVENTION The present invention aims to improve the operability and efficiency of setting the reading coordinate origin when reading a figure such as an original with a figure reading apparatus as these figure data input apparatuses. It is in.

[0004]

The first invention of the present invention is as follows:
A reflection illumination type or transmission illumination type drawing board 1, a figure reading index portion 4 integrally attached to a movable bracket 3 which can be moved and scanned in the XY directions, and an integral or attachment to the movable bracket 3 or figure reading index portion 4. It is a figure reading device characterized in that it is provided with a removable light or magnetic detection unit.

A second aspect of the present invention is a figure positioning pin plate characterized in that a positioning pin or plate is provided with a light emitting portion.

A third aspect of the present invention is a graphic positioning pin plate, characterized in that the positioning pin or the pin plate is provided with a light transmitting portion through which light passes in a vertical direction.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The first invention of the present invention will be described in detail with reference to the embodiment of FIG.
Is provided with a rectangular drawing board 1 on which the drawn drawing is placed flat, and a movable arm 2 which linearly moves in parallel to the horizontal direction (X direction) on the upper surface of the drawing board 1, and along the moving arm 2. Movable bracket 3 that linearly moves in the vertical direction (Y direction), a reading index portion 4 integrally supported by the movable bracket 3, and a translucent trace index plate 5 attached to the reading index portion 4.
(A transparent plate such as glass or plastic provided with a cross-shaped index mark).

A slide bracket 3a is attached to one end of the movable arm 2, and the slide bracket 3a is attached.
Is supported by an X-direction guide shaft 7 provided along the upper end of the rectangular drawing board 1 and supported by supporting portions 7a, 7a at both ends thereof, and is slidably movable along the guide shaft 7. ..

A slide bracket 3b is provided at the other end of the movable arm 2, and the slide bracket 3b is
Along the lower end of the drawing board 1, support portions 8a, 8a at both ends thereof are provided.
It is supported by an X-direction guide shaft 8 which is supported and provided, and is slidably movable along the guide shaft 8.

Further, a linear type or rotary type position detector (for example, a linear encoder (see FIG. 2) which detects a moving position on the X axis of the movable arm 2 which is movable in the X direction along the guide shaft 7 or the guide shaft 8. (Not shown)) is the guide shaft 7 in the X direction,
Or the movable arm 2 which is attached to 8 and is movable.
The position (coordinates) on the X axis can be detected.

Next, the movable bracket 3 is attached to the movable arm 2
Is movably supported by a Y-direction guide shaft (not shown) mounted parallel to the longitudinal direction (Y-direction orthogonal to the X-direction), and is movable in the Y-direction along the movable arm 2. ..

A movable arm 2 which is movable in the Y direction along a Y-direction guide shaft attached to the movable arm.
A position detector (for example, a linear encoder (not shown)) such as a linear type or rotary type encoder for detecting the movement position on the Y-axis of the vehicle is mounted on the Y-direction guide shaft, and the movable arm 2 is movable.
The position (coordinates) on the Y-axis can be detected.

The movable bracket 3 is integrally provided with a reading index portion 4, and the reading index portion 4 is movable with the operating bracket 3 on the figure of the drawing board 1 so as to be transparent. Equipped with.

By grasping the upper side of the movable bracket 3 by hand and freely moving it in the X direction to the Y direction, the trace index plate 5 can be freely moved on the drawing plate 1.

The drawing board 1 may be either a reflection illumination type or a transmission illumination type in which an illumination light source is incorporated.

In the first aspect of the present invention, in the figure reading device A, a photo sensor, which is integrally or detachably attached to the movable bracket 3 or the reading index portion 4 which is movable and scannable in the XY directions, A photodetector 6 such as a CCD sensor or a magnetic detector 6 such as a magnetic sensor is provided.

As an embodiment of the first invention, for example, the photodetector 6 includes a movable bracket 3 or a reading index portion 4.
It is installed integrally or detachably on the lower side facing the drawing board 1.

Alternatively, as another embodiment, a photodetector 6 or a magnetic detector 6 is provided around a trace index plate 5 attached to a portion corresponding to the read index portion 4 shown in FIG. It may be attached, or by removing the trace index plate 5 attached to the reading index portion 4,
The photodetector 6 and the magnetic detector 6 may be attached integrally or detachably to the position where the trace index plate 5 is attached. It should be noted that it is possible to preset the difference between the coordinate value read by the coordinate reading system by the detection unit 6 and the coordinate value read by the index mark (cursor) of the index plate 5.

The figure positioning pin plate B of the second invention of the present invention is, as shown in the side view of FIG. 2, an elongated plate 9 made of metal, synthetic resin, glass, porcelain or the like, Two or several figure positioning pins 10 are integrally provided on the surface of the plate 9, and a photo is generated in the whole or a part of the positioning pins 10 so as to emit light toward above the pins 10. Micro light emitter 11 such as diode, LED, optical fiber, or magnetic generator 11
It is equipped with (not shown), is placed on the drawing board 1 of the figure reading device A of FIG. 1, and is used by being adhered and fixed with an adhesive tape, an adhesive tape or the like.

The micro-emitter or magnetic generator 11 is
The positioning pin 10 is provided in a hole portion 10a of an appropriate size, which is formed in a vertical direction with respect to the plate 9, and is mounted and fixed at a height such that it does not protrude from the top end of the pin 10. is there.

In the case where the micro-light-emitting body 11 is, for example, a photodiode light-emitting body, the micro-light-emitting body 11 is connected by current-carrying portions 13 covered with an insulating material, and the plate 9 is used.
It is equipped with an internal light-emitting power supply unit 14 or an external light-emitting power supply unit built-in the switch, and a switch for turning on and off the light-emitting body 11 as necessary, and goes upward from the upper opening of the holed portion 10a. Emit light ray L.

The light emitting point on the pin plate B is at least 2
It is enough if there are points, but ideally, the pin plate B is the drawing plate 1
It is desirable that the light spots are located at both ends of the full width of the effective movement of the trace reading index plate 5 as long as the full width of the trace reading index plate 5.

If necessary, a small hole having an appropriate diameter (for example, about 1 mm) or an appropriate width (for example, 1 mm) may be provided above the light-emitting body 11 so as to close the upper opening of the hole portion 10a.
A light-transmitting plate having a linear slit of about (mm) can be installed, and the smaller the small hole diameter and the width of the slit within the detectable range, the more effective the detection accuracy.

As shown in the side view of FIG. 3, the figure positioning pin plate C of the third invention of the present invention has an elongated plate 9 and two or several figure positioning pins on the surface of the plate 9. 10 and the positioning pin 1
In the inside of all or a part of 0, a light transmitting hole portion 10b is provided so as to penetrate in a direction perpendicular to the plate 9.

If necessary, a transparent hole having a small hole with an appropriate diameter (for example, about 1 mm) or a linear slit with an appropriate width (for example, about 1 mm) is formed so as to close the upper opening of the hole portion 10b. A light board can be installed, or
The hole portion 10b may be a small hole having a small diameter or a slit having a narrow width.

The figure positioning pin plate C is used in the figure reading device A as shown in FIG. 3, which is a light diffusing light-transmitting plate 15 (frosted glass, light diffusing synthetic resin plate), and a light source 16 for illumination. Fluorescent lamp), a pin for positioning, which is used by being mounted on a drawing board 1 of a transillumination type equipped with a transillumination 1a composed of a light reflecting plate 17 and being fixedly adhered by an adhesive tape or an adhesive tape. Hole portion 1 penetrating plate C
The light ray L from the transmitted illumination 1a is emitted from the lower opening of 0b toward the upper side of the upper opening.

Next, the figure reading device A of the first invention.
The figure reading operation when the coordinate origin is at a specific position on the drawing board 1 of the drawing reading apparatus A using the figure positioning pin plate B of the second invention will be described below with reference to FIG. To do. After the power of the figure reading device A is turned on, if there is a machine origin unique to the figure reading device A, first, the trace reading index plate 5 of the reading device A is returned to the machine origin position on the drawing board 1. The zero origin operation is performed by moving the trace reading index plate 5 to a desired point, and the counter is reset there to set the reading coordinate origin at the desired position on the drawing board 1.

If there is no machine origin peculiar to the graphic reading device A, the trace reading index plate 5 of the reading device A is moved to a desired point on the drawing plate 1 and the counter is reset to set the desired position. Set the coordinate origin for reading to.

Next, the figure positioning pin plate B is placed in a substantially horizontal posture (not necessarily in a horizontal position) at an appropriate position on the drawing board 1 and an adhesive material (adhesive tape or the like so that it can be peeled again) is used. Attach and fix with.

FIG. 4 is a plan view of the graphic positioning pin plate B adhered and fixed on the drawing board 1, and the positioning pin 10 has a light spot which emits a light beam L upward from the tip thereof. Let the respective light spots be P1, P2, P3, and P4.

Subsequently, the figure positioning pin plate B
The designated coordinate origin F (a coordinate origin for coordinate reading designated beforehand by the customer or the previous process) on the designated coordinate origin indication sheet S (polyester sheet, etc.),
Positioning pin holes are provided at positions matching the positioning pins 10 of the pin plate B, and are fitted and fixed. The designated coordinate origin instruction sheet S is, for example, created in advance by the figure specification instructor before the figure reading input, and is handed to the figure input operator together with the figure input instruction.

Next, the dimensions between the respective light spots are set to D12, D.
23 and D34, the movement of the trace reading index plate 5 in the vertical direction (Y direction) is fixed (fixed by a lock mechanism), and fixed at a height passing over the pin plate B.

Index mark on the trace reading index plate 5 (car
The photodetector 6 attached to each light spot
The coordinates when passing through P1, P2, P3, P4
The coordinates are read by the coordinate reading mechanism of the main unit, and the respective reading coordinates
Each value (x₁, y₂), (x ₂, y₂), (x₃, y₃), (x_Four,
y_Four), √ ((x₂-X₁)²＋ (y₂-Y₁)²) = D12 √ ((x₃-X₂)²＋ (y₃-Y₂)²) = D23 √ ((x_Four-X₃)²＋ (y_Four-Y₃)²) = D34 Pin plate inclination angle θ = tan^-1((Y_Four-Y₁)
/ (X_Four-X₁))

The inclination angle θ is an installation angle that is determined each time the positioning pin plate B is mounted and fixed on the drawing board 1, and is any value of θ = 0 ° to 360 °.

Read coordinate values (x _n y _n , (n
= 1, 2, 3 ...) stores the coordinate data at that point in time by the light spot passage signal.

The relative position of the designated coordinate origin F on the figure (on the original) from the positioning pin plate B is determined as follows. For example, as shown in FIG. 4, the center of each positioning pin 10 of the pin plate B (each light spot P1, P2, P3, P4)
When the straight line connecting the lines is the X axis, the light spot P on the pin plate B
If the relative position from the position coordinate (x ₃ , y ₃ ) of ₃ to the designated coordinate origin F is (x, y), the position coordinate (x _f, y _f ) of the designated coordinate origin F, (x _f, y _f = (X ₃ + x × cos θ−y × sin θ, y ₃ + y × cos θ + x × sin θ)

As described above, each position of the pin plate B is determined.
Specified coordinate origin F of female pin 10 (Set on drawing board 1
The light spot closest to the desired origin point), or
Set the position coordinates (x, y) of any light spot to the position coordinate of that light spot.
When the reading of the mark is completed, it is set in advance or after the fact or
If registered, the position coordinate of the designated coordinate origin F (x
_f,y _f) Is immediate, manual or computer
It is calculated and calculated in the process.

The designated coordinate origin F thus obtained
If the coordinate counter is reset by the figure reading device A so that the position coordinate (x _f, y _f ) of the coordinates becomes the position coordinate (0, 0), the position coordinate of the designated coordinate origin F can be read. It can be set as the origin coordinate (0, 0).

Graphic positioning pin plate C of the third invention
Is used by being fixedly mounted on the drawing board 1 of the figure reading device A provided with the drawing board 1 provided with the transmitted light 1a using an adhesive material or the like. Ray L from
Is detected by the light detection section 6 attached to the reading index section 4 of the graphic reading apparatus A, which passes through the light transmitting section 12 of the pin plate C and is irradiated above the pin plate C. It was done like this.

Using this figure positioning pin plate C, in the same manner as in the case of the figure positioning pin plate B of the second invention described in FIG. 4, the position coordinates (x _f, y _{f of the} designated coordinate origin F are shown. ) Is set, and the position counter (x _f, y _f ) is set to the origin (0, 0), the coordinate counter is reset by the figure reading device A. The coordinates can be set to the reading origin coordinates (0, 0).

The positioning pin plate B equipped with the light emitting body 11 of the second invention or the positioning pin plate C provided with the light transmitting portion 12 of the third invention is a reading index plate for visually tracing a graphic trace. It can also be used when the designated coordinate origin F is set by the figure reading device A using 5 (with an index mark (cursor)) in the reading index section 4.

[0042]

The figure reading device of the present invention comprises a reflection illumination type or transmission illumination type drawing board 1, a figure reading index portion 4 integrally attached to a movable bracket 3 which can be moved and scanned in the XY directions, and the movable bracket. 3 or the graphic reading index portion 4 is provided with an integrated or detachable light or magnetic detection portion 6, so that a light beam L generated from the positioning pin or a predetermined portion of the plate (for example, the positioning pin 10) on the drawing board 1. The position coordinates of the light spots P1, P2, P3, P4 at the location where the magnetic field lines are generated can be automatically detected, and the position of the predetermined designated coordinate origin F (coordinate origin for reading) when reading the figure The coordinates can be set easily.

[0043]

The graphic reading device and the graphic positioning pin plate of the present invention trace the input graphic on the drawing board of the graphic reading device and output the graphic data output device (for example, CRT graphic image output device, XY). It is possible to improve the operability and efficiency of setting the coordinate origin for reading when inputting as graphic data to a drawing device, an XY plotter device, an XY cutting device, etc.).

[Brief description of drawings]

FIG. 1 is an external perspective view illustrating a graphic reading device A according to a first invention of the present invention.

FIG. 2 is a side view of a graphic positioning pin plate according to a second invention of the present invention.

FIG. 3 is a side view of a figure positioning pin plate according to a third aspect of the present invention.

FIG. 4 is a plan view illustrating setting of a designated coordinate origin on the drawing board of the graphic reading apparatus A according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Drawing board 1a ... Transmitted illumination 2 ... Movable arm 3 ... Movable bracket 4 ... Reading index part 5 ... Reading index plate 6 ... Optical detection or magnetic detection part 7 ... Guide shaft 8 ... Guide shaft 9 ... Plate 10 ... Positioning pin 10a
... Perforated part 10b ... Perforated part 11 ... Light emitting body 12 ... Translucent part 13 ... Conducting part 14 ... Power source part 15 ... Light diffusing translucent plate 16 ... Light source part 17 ... Light reflecting plate A ... Graphic reading device B ... Positioning pin plate C… Positioning pin plate D12, D23, D34… Distance between light points F… Designated coordinate origin L
… Rays P1, P2, P3, P4… Light spot S… Specified coordinate origin instruction sheet

Claims (3)

[Claims] 1. A reflection illumination type or transmission illumination type drawing board 1.
And a graphic reading index portion 4 integrally attached to a movable bracket 3 which can be moved and scanned in the XY directions, and a light or magnetic detection portion which is integrated with or removable from the movable bracket 3 or the graphic reading index portion 4. A figure reading device characterized in that 2. A figure positioning pin plate, characterized in that the positioning pin or plate is provided with a light emitting portion or a magnetic field generating portion. 3. A figure positioning pin plate, characterized in that the positioning pin or pin plate is provided with a light transmitting portion through which light passes in a vertical direction.