JPH07101039A - Method and apparatus for cd multicolor printing - Google Patents

Abstract

PURPOSE:To perform CD multicolor printing with extremely high accuracy and efficiency by applying a resister mark in the first printing and matching the register mark of each CD with a constant position on and after the second printing to perform printing. CONSTITUTION:A register mark 3 is printed on one point of the circumference of a CD during the first printing by the arbitrary printing press among at least two printing presses along with the printing due to the printing presses 4 to print colors whose number corresponds to the number of the printing presses on the CD. The second printing is applied to the once printed CD but, on and after the second printing, the register mark of each CD is precisely matched with a constant position by register mark matching devices 8, 11 to perform printing by the printing presses 4. Printing is performed the arbitrary number of times to apply printing of colors of (printing number of times)X(number of printing presses) to the CD.

Description

Detailed Description of the Invention

[0001]

[Industrial application] U on CD (compact disc)
A CD printing device for V-ink screen printing, in which the tray stop before the first printing device of the CD printing device having at least two printing machines and at least two UV dryers alternately arranged on the turntable is stopped. CD with registration mark alignment device at one or both of the position and relay tray position
Relating to the multi-color printing device, the registration mark is printed on each CD in the first printing, and after the second printing, the registration mark of each CD is precisely aligned with the registration mark aligning device before printing. And a CD multi-color printing device for performing printing with the number of times printing times the number of printing machines and C using the device.
A multi-color printing method is provided.

[0002]

2. Description of the Related Art Conventionally, printing on a CD (screen printing, U printing
When V ink is used), the demand for one-color or two-color printing is overwhelmingly large, so that a two-color printing apparatus as used in the present invention is generally used.

However, recently, with the rapid spread of CDs and the enormous increase in the number of sheets used, the demand for multicolor printing of two or more colors and six colors has sharply increased, and it is necessary to meet the demand. ing.

Thus, at present, a small number of four-color printers are used as multi-color printers, but this printer is structurally double the size of the two-color printer used in the present invention. The number of trays provided on the turntable is 12 to 24, the printing machine is 2 to 4, and the UV dryer is 2 to 4. Therefore, the diameter of the turntable is about twice as large. As a result, ancillary equipment becomes large in size, and there is a drawback that the cost is high and a large space is required. Also, naturally one color ~
I could only print up to 4 colors.

Therefore, the number of printing colors such as a two-color printing device is small, but the cost is low, and a small printing device is used, and the same CD is used.
It was naturally considered to perform multi-color printing by performing the printing more than once on the above, but if the printing apparatus is used as it is,
Although color misregistration occurs in the printing after the first printing, the CD has a disc shape unlike the rectangular shape such as paper or the like, which causes a problem in positioning.

As a disc-shaped CD positioning printing means,
It was considered to use a CCD camera, which has made remarkable progress in recent years, but (1) every time the printing pattern (color) changes, the position for positioning needs to be changed, and the setup time for the next printing is required. Too much, (2) In order to improve the positioning accuracy, a lens with a high magnification must be used, but then the viewing range of the lens becomes narrow and adjustment becomes difficult. However, it is not suitable for practical use because there is a problem that it is difficult to perform stable binarization when the CD printing surface is a mirror surface.

[0007]

The present invention has been made to solve the above conventional problems. That is, according to the present invention, the trays on which the CDs are placed are installed at equal intervals on the circumference of the turntable, and the turntables are intermittently rotated at intervals between the trays to convey the CDs on the trays. Above the tray stop position of the turntable, at least two printing machines and at least two UV dryers are alternately arranged facing the tray.

The first printing machine is provided with a supply arm in the vicinity of a tray stop position which is in front of the opposing tray, and the reciprocating arc rotation of the supply arm and the suction and release of the CD by the suction head at the tip of the arm. , One stock pole CD, equipped with a relay tray to be transferred and placed on the tray, and an ejection arm is installed near the tray stop position behind the last UV dryer, Reciprocating rotation of the ejection arm and adsorption of a CD by an adsorption head at the tip of the arm,
In a CD printing device equipped to transfer and stack printed and dried CDs from a tray by releasing to a stock pole via a relay tray,

A sensor for detecting the registration mark of the CD at one or both of the tray stop position and the relay tray position, which are in front of the tray facing the first printing machine of the turntable, and the rotation control operated by the detection of the sensor. C, characterized by having a registration mark aligning device composed of a mechanism.
The D multicolor printing apparatus solves the problem.

The present invention also provides the following CD multicolor printing method using the above-described CD multicolor printing apparatus of the present invention, that is, any printing machine among at least two printing machines during the first printing. Then, a registration mark is printed at one point on the circumference of the CD together with the printing by the printing machine, and printing is performed with the number of colors of the number of printing machines.

Next, the second printing is performed on the CD which has been printed once. From this time, the registration mark of each CD is precisely aligned with the registration mark aligning device at a fixed position and then supplied to the printing machine to perform printing. Print the number of prints (2 times) x the number of printing machines,

The problem is solved by the CD multicolor printing method, which is characterized in that the printing is performed an arbitrary number of times, and the number of colors is equal to the number of printing times the number of printing machines.

[0013]

[Embodiment (Structure)] Next, an embodiment of the present invention will be described with reference to the drawings. Tray 2 for mounting CDs on the circumference of turntable 1 is installed at equal intervals, and turntable 1 is placed between trays 2. At least two printing machines 4 are provided above the tray 2 stop position of the turntable 1 so as to be opposed to the tray 2 by being intermittently rotated at intervals of.
And at least two UV dryers 5 are alternately arranged,

The supply arm 6 is installed in the vicinity of the tray 2 stop position, which is in front of the tray 2 facing the first printing machine 4, and the reciprocating arc rotation of the supply arm 6 and the suction head 6a at the tip of the arm cause a CD. Is prepared by transferring and placing one CD of the stock pole 7 to the tray 2 through the relay tray / registration mark aligning device 8 by suction and release of
Further, a discharge arm 9 is installed in the vicinity of the tray 2 stop position behind the last UV dryer 5, the discharge arm 9 is reciprocally rotated, and a CD is sucked by a suction head 9a at the end of the arm.
In the CD printing apparatus, which is equipped with the printed and dried CDs to be transferred and stacked from the tray 2 to the stock pole 7 through the discharge relay tray 10 by releasing,

The CD registration mark 3 is provided on one or both of the tray 2 stop position and the relay tray 10 position, which are in front of the tray 2 facing the first printing machine 4 of the turntable 1.
Is a CD multicolor printing apparatus including a registration mark alignment device 8 and 11 including a sensor 12 that detects the rotation speed and a rotation control mechanism 13 that operates by the detection of the sensor 12.

In the above, the registration mark alignment device 8,
Reference numeral 11 denotes a rotation control mechanism 1 having a CD mounting portion 13c at the upper end of a shaft 13b whose rotation is controlled by a servomotor 13a or the like.
3 and a sensor 12 such as an optical sensor provided in opposition to the CD mounted on the CD mounting portion 13c of the mechanism 13,
The registration mark 3 of the CD is detected by the sensor 12, and the rotation control mechanism 13 is operated by a command to controlly rotate the CD on the CD mounting portion 13c so that the registration mark 3 is precisely aligned and stopped. It is provided.

Further, according to the present invention, the registration mark aligning devices 8 and 11 are arranged such that the tray 2 positioned before the tray 2 opposite the position of the relay tray / registration mark aligning device 8 and the first printing machine 4 of the turntable 1 is stopped. One or both of the positions are provided, but in the case where both are provided as in the illustrated example, for example, the registration mark alignment device 8 of the former relay tray performs registration of the registration marks at high speed, and the latter. The registration mark alignment device 11 is provided so as to perform precise registration mark alignment.

In the drawings, reference numeral 7 is a stock pole for stacking and setting a set number of CDs, 14, 15 are supply conveyors and discharge conveyors of the stock pole 7, and 16 is transfer between the conveyors 14, 15 of the stock pole 7 and standby positions. The chuck unit to perform is shown.

The registration mark 3 is one point on the circumference of the CD (eg,
It prints on a width of 0.2 x a length of 1.0 mm), but sensor 1
In order not to erroneously detect the print mark 2, the other misleading print pattern does not overlap the circumference on which the registration mark 3 is printed.

[0020]

(Embodiment (Method)) Next, an embodiment of the CD multicolor printing method by the apparatus of the present invention will be described. During the first printing, any one of at least two printing presses 4 runs on the circumference of the CD. The registration mark 3 is printed on one point of the same as the printing by the printing machine 4, and the number of colors of the printing machine is printed on the CD.

Next, the second printing is performed on the CD which has been printed once. After the second printing, the registration mark 3 of each CD is precisely aligned to a fixed position by the registration mark aligning devices 8 and 11 and then the printing machine. 4 to perform printing, and print on the CD (number of times of printing (2 times) × number of printing machines (example 2)) (example 2 × 2 =)
Print 4 colors,

After that, printing is performed any number of times, and printing is performed on the CD with the number of prints times the number of colors of the printing machine.
It is a multicolor printing method.

[0023]

When the operation of the device is started, the bifurcated supply arm 6
Is moved forward and the chuck unit 16 moves the stock pole 7 from the supply conveyor 14 to the standby position.
A single CD is adsorbed to the adsorption head 6a, and the CD transferred onto the relay tray / registration mark alignment device 8 is adsorbed.

By the backward rotation, the CD of the relay tray / registration mark aligning device 8 is transferred to the tray 2 of the turntable 1 and the CD of the stock pole 7 is transferred to the relay tray / registration mark aligning device 8, while the turntable is turned on. 1 is synchronized with the reciprocating rotation of the supply arm 6 and is intermittently rotated to the intervals of the trays, and the CDs are placed one after another on each tray 2 and supplied to the printing machine 4,

The CDs are printed by the printing machine 4 having at least two CDs installed, dried (cured) through the UV dryer 5, and reach the position of the discharge arm 9 through the last UV dryer 5 and are discharged. When the arm 9 is rotated forward, it is stacked on the stock pole 7 via the discharge relay tray 10 and when a set number of sheets are stacked on the stock pole 7, the chuck unit 16 transfers it to the discharge conveyor 15.

The first printing is performed on the CD in the above-mentioned order, and the registration mark 3 is printed on the CD by any of the printing machines 4 during the printing process, and the number of printing times (once) × the printing machine on the CD. Finish printing for the number of colors (eg, 2 units) (eg, 1 × 2 = 2 colors),

Next, the plate of each printing machine is exchanged, and the above-mentioned CD that has been printed once is printed for the second time. After this second time, the registration mark alignment devices 8 and 11 are operated to make a prediction. The registration mark 3 is adjusted to a fixed position and then supplied to the printing machine 4.

In the illustrated example, first, the CD transferred onto the relay tray / registration mark aligning device 8 by the supply arm 6 is roughly aligned at a high speed by the registration mark aligning device 8 provided at that position. At this time, in order to perform at a high speed and with high efficiency, for example, the CD mounting portion 13c (the mounted CD) of the apparatus 8 is all rotated rightward at a high speed by a maximum rotation of 360 °, and the fixed position P is stopped. Make a stop at the point slightly over to the right ((a) → (b) in Fig. 3)

Next, when the above-mentioned CD is transferred and placed on the tray 2 of the turntable 1 by the supply arm 6 and conveyed to reach the position of the registration mark aligning device 11, this time, the CD placing portion 13c is moved. It rotates to the left only at a relatively low speed, precisely matches the fixed position P, and stops ((c) → (d) in FIG. 3), and in that state, it is placed on the tray 2 for the first time. Supply to the printing machine 4.

As described above, since each CD is conveyed with the registration mark 3 aligned with the fixed position, the printing pattern does not shift in each printing machine 4 and the number of printings (2 times) × the number of printing machines. Printing (2 × 2 = 4 colors) of the number of colors (eg, 2 units) is completed.

When printing with the above-mentioned number of colors, the plate of each printing machine is replaced each time, and the previously printed CD is printed.
To print next time. Also in this case, the registration mark 3 is adjusted to the fixed position by the registration mark alignment devices 8 and 11 and supplied to the printing machine 4 every time. As described above, it is possible to perform printing on the CD with the number of prints times the number of printing machines.

In the embodiment of the present invention equipped with two printing machines, 3
Number of prints, that is, number of prints 3 x number of colors of 2 printing machines (3 x
The accuracy of the print pattern deviation after printing 2 = 6 colors) is extremely high at the first 2 color printing ± 5 / 100mm or less 2nd 4 color printing ± 6 / 100mm or less 3rd 6 color printing ± 7 / 100mm or less Accurate results were obtained.

The printing speed is as follows: first two-color printing 1800 to 2400 sheets (depending on the ink used) second four-color printing 1200 sheets. Only the number has decreased.

[0034]

As described above, according to the present invention, by simply installing the registration mark aligning device on the existing CD printing device, the present invention C can be obtained.
A D multicolor printing device can be constructed, which is extremely inexpensive and can be simply modified.
A registration mark is added in the first printing, and in the second and subsequent printings, the registration mark alignment device aligns the registration marks of each CD to a fixed position to print a CD multicolor print with the number of prints times the number of printing machines. It has an excellent effect that can be performed with extremely high accuracy and high efficiency.

[Brief description of drawings]

FIG. 1 is a plan view of an apparatus according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a schematic configuration of a registration mark aligning device and a relationship between the device, a stock pole, a relay tray, and a turntable.

3A to 3D are explanatory views showing the registration order of registration marks.

[Explanation of symbols]

 P Fixed Position 1 Turntable 2 Tray 3 Registration Mark 4 Printing Machine 5 UV Dryer 6 Supply Arm 6a Suction Head 7 Stock Pole 8 Relay Tray / Registration Mark Aligning Device 9 Ejection Arm 9a Suction Head 10 Relay Tray 11 Registration Mark Aligning Device 12 Sensor 13 Rotation control mechanism 13a Servo motor 13b Shaft 14 Supply conveyor 15 Discharge conveyor 16 Chuck unit

Claims (4)

[Claims] 1. A tray on which a CD is placed is installed at equal intervals on the circumference of a turntable, and the turntable is intermittently rotated at intervals between the trays so as to convey the CD on the tray. At least two printing machines and at least two UV dryers are alternately arranged opposite to the tray above the tray stop position of the turntable, and the first printing machine stops the tray before the tray facing the tray. The supply arm is installed close to the position, and the reciprocating arc rotation of the supply arm and the suction and release of the CD by the suction head at the tip of the arm cause one CD of the stock pole to be addressed to the tray via the relay tray. In addition, a discharge arm is provided so as to be transferred and placed, and a discharge arm is installed in the vicinity of a tray stop position behind the last UV dryer, and the discharge arm is reciprocally rotated and a suction head at the tip of the arm sucks a CD. In a CD printing machine equipped to transfer printed dry CDs from a tray to a stock pole via a relay tray, the first press of the turntable stops before the opposite tray. A CD multicolor printing apparatus, characterized in that a registration mark alignment device including a sensor for detecting a registration mark on a CD and a rotation control mechanism that operates by detecting the sensor is provided at one or both of the position and the relay tray position. . 2. A registration mark alignment device is provided with a rotation control mechanism having a CD mounting portion on the upper end of a shaft whose rotation is controlled by a servomotor, and a CD mounted on the CD mounting portion of the mechanism. It is composed of a sensor such as an optical sensor provided with the sensor, detects the registration mark of the CD by the sensor, operates the rotation control mechanism in response to the command, and controls and rotates the CD on the CD mounting portion to precisely position the registration mark at a fixed position. The CD multicolor printing apparatus according to claim 1, which is provided so as to stop together. 3. A registration mark aligning device is provided at a relay tray position and a tray stop position that is in front of the tray opposite to the tray of the first printing machine of the turntable, and the registration mark aligning device of the former is used to approximate the registration mark position. 2. The CD multicolor printing apparatus according to claim 1, wherein the registration mark aligning device is provided so as to perform precise registration mark alignment. 4. A registration mark is printed at one point on the circumference of a CD or the like together with the printing by the printing machine by any printing machine among at least two printing machines during the first printing. After printing the number of colors of the number of printing machines and then printing the second time on the CD that has been printed once, from this time, the registration mark of each CD is precisely aligned with the registration mark alignment device. After supplying to the printing machine to perform printing, print the number of prints (2 times) × the number of colors of the printing machine, and then perform any number of times to print the number of times of printing × the number of colors of the printing machine. CD multicolor printing method characterized by being performed.