JPS63228166A - Plate inspection device - Google Patents

Abstract

PURPOSE:To permit exact and non-failing execution of plate inspection of even, for example, the small statement of virtues used in package boxes of medical goods by projecting a plate to be inspected at a specific magnification on a monitor TV. CONSTITUTION:The TV signals (analog signals) obtd. from two units of cameras 30, 31 are sent to a TV controller 27 and a comparator 50. The signals are further sent from the TV controller 27 to the monitor TV so that the two videos of the plates 10, 11 are superposedly displayed in another color on the monitor TV and are visually inspected. The device is so constituted that the plate to be inspected is projected at 15 times, more preferably 20 times magnification on the monitor TV. The exact and non-failing execution of such severe plate inspection to be used for printing of, for example, the statement of virtues to be inserted into the boxes of the medical goods is thereby permitted.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a plate inspection device for printing, and more particularly, to a device for displaying two plates (usually an old edition and a new edition) in different colors on a TV monitor. This invention relates to a plate inspection device that visually inspects plates to see if there are any different parts.

[Subject skill]

Conventionally, two plates are placed on a table, the two plates are photographed by two TV cameras, and the obtained signals are projected on a TV monitor in different colors, thereby displaying the two plates. A plate inspection device that facilitates comparison and visually inspects projected images on a TV monitor is disclosed, for example, in Japanese Unexamined Patent Application Publication No. 57-1981 filed by the same applicant.
This is known from, for example, Japanese Patent No. 108854.

In addition, Japanese Patent Application No. 60-213549 filed by the same applicant is
This is a further improved and simplified plate inspection device.

[Problem that the invention seeks to solve]

The invention further relates to improvements in this type of device,
For example, this plate inspection device can handle rigorous inspections such as those used to print efficacy labels inserted into pharmaceutical boxes.

In other words, when printing efficacy statements for pharmaceuticals, even the slightest mistake in the content cannot be tolerated, and if "ka" becomes "ga" due to dirt, etc., it will cause a big social problem. There is a risk.

In order to meet such plate inspection requirements, the present invention provides a printing plate inspection device that has been further improved.

Means for Solving Problem C] The present invention provides a plate inspection device using a TV monitor of this kind, in other words, when printing, the patterns of two plates are displayed in an overlapping manner, and different parts of the plates are displayed. This is a plate inspection device that compares and inspects two plates, and includes an For printing, it is equipped with a TV camera, a monitor TV that can overlay video signals from the TV camera and display them in different colors, a comparator that compares the signals from the two TV cameras, an operation panel that controls the device, etc. In the plate inspection device, the table is moved in a matrix, and the plate to be inspected is displayed on the monitor TV.
It is configured to be displayed at a magnification of 5 times or more, preferably 20 times, and with such a configuration, inspection of small efficacy statements used on the packaging of pharmaceuticals, etc., can be performed accurately and without error. This is a device that allows you to

〔Example〕

The present invention will be explained in detail below with reference to the drawings.

As shown in FIGS. 1 and 2, this plate inspection device detects two plates 10 and 11 to be inspected! ! It is equipped with an XY table 20 that is movable in the xSY direction. XY table 2
0 is such that two plates 10 and 11 are fixedly placed in the correct position with register pins. Then, one of the plates is slightly rotated relative to the table 20. This minute rotation is performed by turning the screw 21, and as a result, the two plates 10 and 11 are moved to the TV left camera 0. Even if the plate is in a twisted position with respect to 31, it can be corrected to the correct position.
2.23 and a light source for reflective illumination 24.2504
If the plate 10.11 is a transmissive type, the light source 22.23 is provided, and if the plate 10.11 is a reflective type, the light source 24.25 is provided.
lights up to illuminate each one. A TV left camera 0.31 for photographing each of the plates 10 and 11 is attached to the upper side of the XY table 20, and one camera 31 is attached so that it can be moved slightly in the X and Y directions. By rotating the screws 32 and 33, the
Move slightly in the Y direction. Thereby, even if the plate 10.11 is slightly misaligned in the X and Y directions with respect to the camera 30.31, it can be corrected. Said screws 21.32.33 place the printing plate 10.11 in the correct corresponding position relative to the camera.

The two plates 10 and 11 placed on the table 20 are TV
The left camera 0.31 photographs the corresponding portion divided into a matrix according to the movement of the table 20. That is, as shown in FIG. 3, in this embodiment, there are 18 rows and 30 columns.
The image is divided into 40 parts, and as shown in the figure, each square is assigned an address from 1 to 540. 1
The 1% shadow order is divided and photographed by moving the table 20 in the order of 1st, 2nd, 3rd, ... 540th address, but when the plate is small or the part of the plate that needs to be inspected is small. (for example, when there are only some characters in the version)
etc., by specifying two addresses from the panel 80, under automatic control by the CPU 52, which will be described later, only the right-angled quadrilateral with the two addresses as diagonals will be automatically photographed, as shown below. It is configured so that the above-mentioned plate inspection can be performed.

TV signals (analog signals) obtained from the two cameras 30 and 31 are sent to a TV controller 27 and a comparator 50, as shown in FIG. Furthermore, this TV controller 27
The two images of plates 10 and 11 are displayed on the monitor TV in different colors and superimposed for visual inspection. When displayed on this monitor, the plate to be checked is displayed on the monitor TV at a magnification of 15 times or more, preferably 20 times. The output signal from the comparator is sent to the TV controller 27 and also to the CPU 52. A memory 54 and a printer 60 are connected to the CPU 52. Furthermore, a moving mechanism 70 for moving the XY table 20, an operation panel 80, etc. are also connected to the CPU 52.

Now, the video signals obtained by the cameras 30 and 31 are sent to the TV controller 27, and are further displayed on the monitor TV 2B in a different color. The images from the above are displayed as magenta M overlapping each other.

(This color can be arbitrarily selected using the switch on the panel 80.

) If the two versions 10.12 have exactly the same - pattern, the pattern will be displayed as blue-violet B, which is a mixture of C and M, but if there is a different part, that part will be displayed as C. or M, so that different parts can be easily determined visually.

On the other hand, the signals from the cameras 30 and 31 are input to the comparator 50 and compared, and if the two signals are different and their levels are above a certain level, the TV controller 27
A signal indicating that there is an abnormality is sent to the CPU 52. The above level can be adjusted using a knob 82 on an operation panel 80. Different parts of the image on the monitor TV 2B can be flashed (blinked) as needed, so that the position can be seen more clearly than if the colors simply change. Whether or not to perform this flushing can be selected using a switch on the panel 80.

That is, it is easier to detect different positions by flashing, but it is better not to use flashing to visually determine whether the different parts are good or bad, so it is possible to select them by using Torachi.

Due to the abnormal output signal from the comparator 50 that the two signals are different and the address signal from the moving mechanism 70, the
The PU 52 can store in the memory 54 the address at which the different parts of the version 1O111 are located.

The memory 54 can also store plate inspection ranges (addresses to be inspected) according to instructions from the panel, and during plate inspection, the table 20 is sequentially moved from the specified range to correspond to the addresses in the specified range. The range of version 10.11 is checked.

Next, the plate inspection work of this plate inspection device will be explained.

First, in the normal plate inspection mode (plate inspection mode 1), the plate is inspected as follows. If you specify a plate inspection range in advance using the panel 80, the addresses in the specified range are sequentially bridged and a comparator detects whether there is an abnormality (a difference in level of more than a certain level between the signals from the two cameras). 50, and the address where the abnormality occurred is stored in the memory 54. After scanning the entire area to be inspected in this way, when the operator turns on the panel, the first address stored as abnormal in the memory 54 will be photographed by the TV camera. The table 20 moves, and the part corresponding to that address is displayed on the monitor TV 28, and the operator visually determines whether or not that part is defective. If it is determined to be OK, a switch on the panel 80 is pressed, and the next stored abnormality address is automatically moved and that part is displayed to make a determination. Proceed with the plate inspection in the same manner.

In mode 1 plate inspection, the operator is not bound to the plate inspection device during scanning.

In the second plate inspection mode 2, when an abnormality is detected during scanning, the scanning is stopped, the quality of the address is determined, and the plate inspection can proceed to the next step.

In the third plate inspection mode 3, the address to be inspected advances one by one each time the switch on the panel 80 is pressed.

Note that the printer 60 prints out abnormal addresses and the like.

〔Effect of the invention〕

Since the present invention has the above-described configuration, it has excellent practical effects as shown below. That is, when printing, it is a plate inspection device that displays the patterns of two plates in an overlapping manner and compares and inspects the different parts.The two plates are arranged in parallel and moved in the X and Y directions. An XY table to be used, and two to cast one shadow on each plate placed on the top surface of this table.
A printer equipped with a TV camera, a monitor TV that can overlay video signals from the TV camera and display them in different colors, a comparator that compares the signals from the two TV cameras, and an operation panel that controls the device. In the plate inspection equipment for
The table is moved in a matrix pattern and the plate to be inspected is displayed on a monitor TV at a magnification of 15 times or more. The present invention has excellent practical effects, such as the ability to accurately and without mistakes perform plate inspection of efficacy notes, etc.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a perspective view showing the entire plate inspection device, Fig. 2 is a front view of a silkworm body of the plate inspection device, and Fig. 3 is a plate inspection device. FIG. 4 is a block diagram of the plate inspection apparatus. 10.11... Plate 20... Table 2132.33... Screws 22.23.24.25... Light source 27... TV controller 28... Monitor TV 30.31... Camera 50 ... Comparator 52 ... CPU 54 ... Memory 60 ... Printer 70 ... Table movement mechanism 80 ... Operation panel 82 ... Knob

Claims (1)

[Claims] 1) A plate inspection device that displays the patterns of two plates in an overlapping manner during printing, and compares and inspects the different parts.The two plates are placed in parallel and moved in the X and Y directions. An XY table, two TV cameras placed on the top of this table to photograph each plate, and a monitor T that can overlay the video signals from the TV cameras and display them in different colors.
In a plate inspection device for printing, which is equipped with a comparator for comparing signals from two TV cameras, an operation panel for controlling the device, etc., the table is moved in a matrix, and the table to be inspected is The magnification ratio when displaying the version on a TV monitor should be at least 15 times or more, preferably approximately 2 times.
A plate inspection device characterized by a 0x magnification.