JPH08267705A - Cd multicolor printing device - Google Patents

Abstract

PURPOSE: To facilitate overprinting with printers by making a zero point of a turn table, a zero point of a screen head of each printer, and a zero point of a screen plate coincide with each other for printing. CONSTITUTION: On a turn table 1, trays 3 for placing and conveying CDs 2 at every conformal angle are arranged. At its upper part, a screen plate 4 is attached and a plurality of printers 5 for printing on the CDs 2 on the trays are provided. After a plurality of colors are printed in a process to convey the CDs 2 supplied and placed on the trays 3 by a CD supply means 6, printed CDs 2 are discharged from the trays 3 by a discharge means 7. In a CD multicolor printing device A, a zero point of each tray 3 of the turn table l, a zero point of a screen head 5a of each printer 5, and a zero point of the screen plate 4 are made to coincide with each other when they face each other for printing. As a result, overprinting by each printer can be performed without adjustment or with fine adjustment.

Description

Detailed Description of the Invention

[0001]

[Industrial application] In a CD multicolor printing apparatus, each tray of a turntable, a screen head of each printing machine,
And a screen plate attached to the screen head.
A common 0 point is set for each person, and 0 points of each tray of the turntable, 0 points of the screen head of the printing machine, and 0 points of the screen plate attached to the screen head are opposed to each other for printing. There is provided a CD multicolor printing device characterized by being provided so as to match at times.

[0002]

2. Description of the Related Art Conventionally, a CD multicolor printing apparatus has been used for performing UV ink screen printing on a CD, a telephone card and various other cards (hereinafter simply referred to as a CD).
The CD multicolor printing apparatus has trays arranged at equal angles on a turntable that rotates intermittently, and a plurality of printing machines and a UV dryer are arranged at a position facing the tray above the turntable and rotated. The CD is supplied and placed by the supply means on the tray of the turntable, and the printing by the printing machine and the drying by the UV dryer are repeated a plurality of times (a plurality of colors, overprinting) to convey the printed CD. It is designed to be discharged from the tray by the discharging means.

[0003]

The conventional CD multicolor printing apparatus described above has the following problems.

Even if each screen frame is manufactured by unifying various conditions such as the material of the screen, its bias angle, and the tension pressure to be stretched on the frame, conventionally, the center of pattern printing is applied to the screen frame. Since the pattern printing was carried out by aligning all the positions with an approximate eye registration and the screen printing plate was provided, it was natural that the center of the pattern was shifted for each screen printing plate.

The respective screen plates provided as described above are set in the respective printing presses to perform a plurality of overprinting prints. In each printing press, the screen head of the printing press with respect to the center of the tray (the screen printing plate). Equipped with an adjustment handle (dial round knob) for adjusting the center of the XY axis 10m
The adjustment was possible within the adjustment range of 7.5 degrees for the m and θ axes.

In the case of overprinting with two or more color screen plates, the centers of the screen plates do not coincide with each other as described above, and there is a difference in screen tension and a clearance between the screen and the CD. Naturally, since color shift occurs, the color shift distance is measured with a loupe or the like, and fine adjustment movement of the XYθ axes of the screen head is performed with the adjustment handle to adjust the color shift distance.

The above-mentioned color matching work must be performed for each color even after the third color, and as the number of colors increases, the adjustment becomes finer and more difficult, which requires a lot of trouble and time.

Since the adjusting handle is a device centering on a screw mechanism, there is always a mechanical backlash,
In reality, it doesn't go exactly according to the scale, so I have to rely on my intuition, and it takes a lot of time to repeat the fine adjustment.

Then, in particular, for example, after completion of multi-color printing for one lot, the screen plate is removed from the screen head of each printing machine, and the next screen plate is transferred to each screen head for printing the next lot. When setting and printing, the screen heads of each printing machine are adjusted and moved from the original position in the printing work of the previous lot, so of course all the prints for this lot are printed. Each screen head had to be adjusted.

Therefore, all the adjustment handles of each printing machine should be returned to the origin at the end of printing the previous lot.
Still, as described above, there is a mechanical backlash, making it difficult to return to the original point accurately.Because of the above, there is a deviation in the center of the pattern on each screen plate itself, so adjustments for each color cannot be overlooked. there were.

As a result of the above, in the conventional multi-color CD printing apparatus, the ratio of the non-operation time for adjustment to the operation time for actual printing becomes high, and the multi-product small lot as in recent years. On the other hand, as the printing speed increases and the number of colors increases, the operating rate will decrease even further under the current conditions. It has been an urgent task to provide effective adjustment means that can realize higher efficiency and higher efficiency.

[0012]

The present invention has been made to solve the above conventional problems. That is, the present invention is provided with a tray on which a CD is placed and conveyed at equal angles on a turntable, and a plurality of printing machines for printing a CD on the tray by attaching a screen plate above the tray. In a CD multicolor printing apparatus provided with a plurality of colors printed in a process of feeding a CD placed and placed on a tray by a feeding unit, and ejecting a printed CD from a tray by an ejecting unit,

A common 0 (zero) point is set for each of the trays of the turntable, the screen head of each printing machine, and each screen plate attached to the screen head.

The 0 point of each tray of the turntable and the 0 point of the screen head of each printing machine, that is, the 0 point of the screen plate attached to each screen head, coincide with each other when they are opposed to each other for printing. Prepared for, C
The D multicolor printing apparatus solves the problem.

Further, each screen frame provided with unified conditions such as the material of the screen, its bias angle, and the tension pressure to be stretched on the frame is based on the three reference points of the XYθ axes and the three reference points. Set on the standard jig board equipped with 4 points of 0 points set, set 0 points of the screen frame,
The problem was solved by the screen plate of the CD multicolor printing apparatus, in which the 0 point (center point) of the pattern was printed in a state of being coincident with the 0 point of the screen frame, and the screen plate having the 0 point set was provided. It is a thing.

Further, each printing machine is provided with XYθ axis fine adjustment means,

The XYθ axis fine adjustment means comprises a controller and an adjustment moving device,

The controller is composed of an operation board equipped with a numeric keypad, an LCD display unit and the like, a computer and the like, and issues a numerical command for fine adjustment of the XYθ axes to the adjustment moving device.

Upon receipt of the above-mentioned command, the adjusting and moving device performs a fine adjustment movement of the screen head and the screen plate attached to the screen head and the XYθ axes by a motor with an encoder, a CD.
The problem is solved by a printing machine of a multicolor printing apparatus.

[0020]

【Example】

[CD multicolor printing apparatus A] A turntable 1 is provided with a tray 3 for mounting and transporting CDs 2 at equal angles, and a screen plate 4 is mounted above the tray 3 to attach a CD on the tray 3.
2 is provided with a plurality of printing machines 5, and a plurality of colors are printed in the process of conveying the CD 2 supplied and placed on the tray 3 by the CD supply means 6, and the printed CD 2 is discharged by the discharge means 7 to the tray 3
In a CD multi-color printing device equipped to eject from the (see FIG. 1)

A common 0 (zero) point is set for each of the trays 3 of the turntable 1, the screen heads 5a of the printing machines 5, and the screen plates 4 attached to the screen heads 5a.

0 point of each tray 3 of the turntable 1,
3 of 0 points of the screen head 5a of each printing machine 5, that is, 0 points of the screen plate 4 attached to each screen head 5a
This is the CD multicolor printing apparatus A, which is provided so that the 0 point of each person will match when they are opposed to each other for printing.

[Screen plate 4 with 0 point set] Each screen frame 4b in which the various conditions such as the material of the screen 4a, the bias angle thereof, and the tension pressure to be stretched over the frame are standardized are set in the XYθ axis. It is set on a reference jig board 8 having four points of 0 points set based on the reference points and the 3 reference points, 0 points of the screen frame 4b are set, and 0 points of the screen frame 4b are set. The 0th (center point) of the pattern is printed in a state of being coincident with each other, and the screen plate 4 having the 0th point set is provided. (See Fig. 2)

[XY θ axis fine adjustment means] XY for each printing machine
The θ-axis fine adjustment means 9 is provided.

The XYθ axis fine adjustment means 9 comprises a controller 10 and an adjustment moving device 11,

The controller 10 includes ten keys 12, L
CD display unit 13, operation key 14, reset key 1
It is composed of an operation board 16 provided with 5 and the like, a computer, etc., and issues a numerical command for fine adjustment of the XYθ axes to the adjustment moving device 11 (see FIG. 4).

In response to the above-mentioned command, the adjusting / moving device 11 performs fine XYθ axis adjustment of the screen head 5a and the screen plate 4 attached thereto by a motor with an encoder or the like, and presses the reset key 15 of the controller 10. And the LCD display unit 13 displays 0,
The command is provided so that the fine adjustment of the XYθ axes of the adjustment moving device 11 is all returned to the origin. (See Figures 3 and 4)

The screen head 5 of each printing machine 5
The 0 point of a is set on the basis of the three reference points a, b, c of the XYθ axis of the screen head 5a, and the XYθ axis fine adjustment means 9 provided in each printing machine 5 is set to the 0 point.
That is, the LCD of the operation board 16 of the controller 10
The XYθ value display of the display unit 13 is set to 0, and the adjusting motion device 11 is set to the 0 position.

[3 Reference Points] (See FIGS. 2 and 3) Reference jig board 8, screen plate 4, screen head 5
a, and the three reference points a, b, and c on the XYθ axes for setting 0 points on the target object for which 0 points are set, such as the tray 3, are the points a on the X axis.
Is the right edge (or left edge) of the upper (or lower) side of the object
1 point near the Y axis, 1 point near the bottom of the left (or right) side of the object, 1 point b near the Y axis, and 1 point near the top of the left (or right) side of the object at the c point on the θ axis. Set the 3 reference points a,
The zero point is set based on b and c. The object shown in FIG. 2 is the screen frame 4 b, and the object shown in FIG. 3 is the screen head 5 of the printing machine 5.
a or the screen plate 4 attached to the screen head 5a.

In FIG. 1, reference numeral 17 indicates a UV dryer.

[0031]

[Function] Each screen frame 4b provided with unified conditions such as the material of the screen, its bias angle, and tension tension to be stretched is set on the reference jig board, and its 0 point and the 0 point of the pattern ( The respective screen plates 4 (0 points are set) are created by printing in a state where the center points are matched.

Each of the above screen plates 4 is attached to the screen head 5a of each printing machine 5. As a result, the 0 points of each screen head 5a and each screen plate 4 match,
Therefore, the state where the 0 point of the tray 3 also coincides (the state where the 3 points coincide with the 0 point) is obtained. Therefore, if printing is performed by each printing machine in this state, each color should be overprinted at an accurate position.

However, the production process of the screen plate,
Fine print misalignment is caused by the mounting condition on the screen head, the relationship between the squeegee and the tension pressure of the screen during printing, which always occurs, and the delicate conditions such as the clearance between the screen and the CD, which always exist. Occurs.

Then, the operator measures the displacement distances of the XYθ axes with respect to the reference points a, b, c and the 0 point with a magnifying glass or the like, and the respective numerical values are set on the ten key of the operation board 16 of the controller 10 of the XYθ axis fine adjustment means 9. While pressing 12 to display on the display unit 13 of the LCD, the operation key 14 is pressed to operate the adjustment movement device 11 in response to the instruction to finely move the screen head 5a (screen plate 4),
The deviation is corrected for each color.

As described above, the XYθ axes of each printing machine are finely adjusted to correct the color misregistration, and when the printing of the lot is completed, the screen plate is taken out from the screen head of each printing machine and each XYθ axis is printed. Press the reset key 15 of the fine adjustment means. As a result, all the screen heads of each printing press return to 0, and the display of the operation board also returns to 0 display. Therefore, when printing the next lot, automatically setting the screen plate on each screen head. Therefore, the 0 point of both of them coincides with each other, and the color misregistration is corrected from the 0 position (origin) of the XYθ axes respectively, so that the operation is accurate and easy.

[0036]

[Effect] A common 0 (zero) point is set for each tray of the turntable, the screen head of each printing machine, and the screen plate attached to each screen head. The points (center points) are set together by baking, and the 0 point of each tray of the turntable and the 0 point of the screen head of each printing machine, that is, the 0 point of the screen plate attached to the screen head. Since the points are made to match when they are opposed to each other for printing, there is an effect that overprint printing by each printing machine can be performed without adjustment or fine adjustment,

The above fine adjustment can be performed extremely accurately and easily by hitting the ten-key on the operation board of the XYθ axis fine adjusting means provided in each printing machine and operating the adjustment operating device by looking at the display. In this way, the operator's color matching work can be simplified, improved in accuracy, and increased in speed, and can effectively respond to small lots of various types and increase in speed, thereby significantly improving the operating efficiency of the CD multicolor printing device. .

When the previous printing is finished and the next printing is performed, the previous screens are removed from the respective screen heads, and then the reset key of the XYθ axis fine adjustment means is simply pressed. Since the controller can be returned to the original position and the origin of the controller can be returned to 0, if each screen plate is set to each screen head at the next printing, the apparent 0 point will match, so no adjustment is required. Alternatively, there is an advantage that it can be performed only by fine adjustment.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of a CD multicolor printing device (four colors).

FIG. 2 is an explanatory diagram of setting a screen frame on a reference jig board and performing pattern printing to provide a screen plate (zero point is set).

FIG. 3 is an explanatory diagram for setting 3 reference points and 0 points on a screen head (or a screen plate attached thereto).

FIG. 4 is an explanatory diagram of a schematic configuration of XYθ axis fine adjustment means.

[Explanation of symbols]

 A CD multi-color printing apparatus embodying the present invention 0 Zero point a, b, c Reference point 1 Turntable 2 CD 3 Tray 4 Screen plate 4a Screen 4b Screen frame 5 Printing machine 5a Screen head 6 Supplying means 7 Ejecting means 8 Reference Jig board 9 XYθ axis fine adjustment means 10 Controller 11 Adjusting device 12 Numeric keypad 13 LCD display unit 14 Operation key 15 Reset key 16 Operation board 17 UV dryer

Claims (5)

[Claims] 1. A turntable is provided with a tray on which CDs are placed and conveyed at equal angles, and a plurality of printing machines for printing a CD on the trays by attaching a screen plate to a position above the trays, and supplying a CD. In the multi-color CD printing apparatus equipped with a multi-color printing device, in which a plurality of colors are printed in the process of transporting the CD placed on the tray by means, and the printed CD is ejected from the tray by the ejection means, A common 0 (zero) point is set for the screen head of each printing machine and each screen plate attached to the screen head, and the 0 point of each tray of the turntable and the 0 of the screen head of each printing machine are set. A CD multicolor printing apparatus provided so that the points, that is, the 0 points of the 3 points of the screen plate attached to each screen head, coincide with each other for printing. 2. A screen frame in which various conditions such as the material of the screen, its bias angle, and the tension pressure to be stretched over the frame are unified based on three reference points of the XYθ axes and the three reference points. Set it on a standard jig board equipped with 4 points of 0 points set, set 0 points of the screen frame, and match 0 points of the pattern (center point) with 0 points of the screen frame. A screen plate for a CD multicolor printing apparatus, which is printed to provide a screen plate with 0 points set. 3. An XYθ axis fine adjustment means is provided for each printing machine, and the XYθ axis fine adjustment means comprises a controller and an adjusting movement device, and the controller is an operation provided with a ten-key pad, an LCD display unit and the like. XYθ consists of a board and a computer
This is to issue a numerical command for fine adjustment of the axis to the adjusting actuator, and the adjusting actuator receives the above-mentioned instruction and performs the XYθ axis fine adjustment movement of the screen head and the screen plate attached to it by the motor with an encoder. Also, when the reset key is pressed, the controller display returns to 0, and the XYθ axis adjustments of the adjustment device are all returned to the origin. A printing machine for a CD multicolor printing device. 4. The 0 point of the screen head of each printing machine is set with reference to the 3 reference points of the XYθ axes of the screen head, and the XYθ axis fine adjustment means provided in each printing machine is set to 0 point. 2. That is, the CD multicolor printing apparatus according to claim 1, wherein the XYθ value display of the LCD display unit of the operation board of the controller is set to 0 and the adjustment moving device is set to the 0 position. 5. Three reference points a, b and c on the XYθ axes for setting 0 points on a target object for setting 0 points such as a reference jig board, a screen plate, a screen head, and a tray are the X axis. The point a is one point on the right (or left) side of the upper (or lower) side of the object, the point b on the Y-axis is one point on the lower (or right) side of the object, and the point c on the θ-axis. 2. The CD according to claim 1, wherein is set to 1 point near the upper end of the left (or right) side of the object, and 0 point is set based on the 3 reference points a, b, and c. Multicolor printing device.