JP5019212B2 - Pattern roller ink detection apparatus and method for intaglio printing press - Google Patents

Description

The present invention relates to an ink detection device for a pattern roller in an intaglio printing machine, and particularly detects the functional component of ink transferred to the surface of the pattern roller when using an intaglio ink containing a functional component, and extracts defective products and It relates to the technology to be classified and discharged.

FIG. 7 shows a schematic configuration diagram of a general intaglio printing press. An intaglio plate surface (3) formed of a plane as a non-image portion and a recess as an image portion is mounted on the peripheral surface of the intaglio cylinder (2). A wiping roller (7) for wiping is in contact. In addition, a plurality of pattern rollers (6) for transferring the ink (5) from the ink fountain (10) are arranged on the intaglio plate surface (3) at predetermined intervals along the circumferential direction of the intaglio plate surface (3). .

The pattern roller (6) is provided with a fountain roller (8) and an ink discharge adjusting plate (4), respectively, and the ink fountain (10) comprising the fountain roller (8) and the ink discharge adjusting plate (4) is provided in the pattern roller (6). Ink having different properties is stored. In the intaglio printing operation, the ink (5) of each ink fountain (10) is transferred to the pattern roller (6) in a state of a substantially uniform film by the fountain roller (8), and the intaglio plate surface (3 ). Of the transferred ink, the ink adhering to the portion other than the pattern portion is wiped by the rotating wiping roller (7) while being pressed against the intaglio plate surface (3), and then the intaglio cylinder (2) and the impression cylinder (9). The ink of the pattern part remaining on the paper passing between is transferred and printed.

Ink supply in intaglio printing, depending on the type of ink, the ink may not properly transfer from the pattern roller (6) to the recess of the intaglio plate surface (3), so the ink supply amount may be slightly increased, Generally, the nip width (contact width) between the intaglio plate surface (3) and the pattern roller is set large. In recent years, intaglio printing products used for securities printing, etc. have been required to have elaborate quality, and excessive supply of ink has been avoided because it leads to poor print quality, and the cost burden and pattern due to increased ink consumption Since it was a factor that hinders the durability of the roller (6), there is a strong demand for proper ink supply.

In rare cases, the ink transfer from the pattern roller (6) to the intaglio plate surface (3) may be poor, but in this case, the operator can only confirm by extracting the product with intaglio printing as appropriate and checking the quality. Therefore, it is not only a troublesome and troublesome work, but a large amount of printed products have been printed when an abnormal product is discovered, resulting in a large cost loss.

As a measure for solving this problem, a metal acupoint roller, a call roller having an elastic body having an adjacent stroke mechanism in contact with the acupuncture roller during printing, and at least one metal adjoining the call roller Provided is an ink supply device for a printing press composed of a form roller, and a pattern roller having an elastic surface for transferring ink to a plate cylinder on which a printing plate surface is mounted adjacent to the form roller. The surface of the stroke roller is made an elastic body so that the ink transfer to the surface can be performed stably, and the belt-like projections are processed into a shape that is seamlessly arranged in a net shape, and further, a metal acupoint roller, and a calling roller There is an ink supply device of an intaglio printing machine in which a water passing mechanism is provided in at least one metal-made roller adjacent to the ink jet roller. (For example, see Patent Document 1)

In addition, in order to find ink supply mistakes with invisible characteristics, as an ink supply monitoring device and ink supply monitoring method for continuously inspecting the characteristics of the supplied ink, the ink having the invisible characteristics to be supplied is contactless. By the inspection unit that continuously inspects, the measured value of the ink inspected by the inspection unit, the control unit that compares and determines the measurement reference range stored in advance, and the display alarm unit that conveys the determination result to the operator, There is an ink supply monitoring device and an ink supply monitoring method for inspecting the characteristics of ink having invisible characteristics to be supplied. (For example, see Patent Document 2)

JP-A-11-268248 JP 2007-136986 A

In the case of using the above-mentioned prior art patent document 1, by incorporating an ink discharge amount control device capable of controlling the ink fountain opening degree and the rotation speed of the fountain roller, it is possible to obtain a uniform film thickness in the roller surface length direction. The minimum necessary ink can be stably supplied while synchronizing with the printing speed, and a certain level of quality can be stabilized. However, in the ink supply device of the printing machine of Patent Document 1, when continuously used, ink gradually accumulates on the pattern roller, so that the amount of ink transfer varies with time and the quality of the printed product is not stable. It may become a trend. In this case, the operator must monitor the printed product frequently, not only confirming the quality by observing the printed product.

In addition, when Patent Document 2 is used, in the ink supply stage, which is the stage before printing, the ink inside the inker is checked online and further in a non-contact manner. The subsequent cleaning work load can be reduced, which is useful. However, the ink supply monitoring device and the ink supply monitoring method disclosed in Patent Document 2 have sensors on the top of the ink fountain and fountain roller inside the inker, and after transferring to the pattern roller, When an event called “misting” that scatters occurs, inks having different ink characteristics may be mixed, and this event cannot be detected. In this case, it is necessary to inspect the printed sheet, and ink transfer failure cannot be detected at an early stage. Also, there is a possibility that ink having different ink characteristics may be mixed even when the ink is reversely transferred from the pattern roller located upstream in the rotation direction in the intaglio cylinder to the pattern roller located downstream. I was not satisfied.

As an ink detection device for pattern rollers in intaglio printing presses that solve these problems, abnormalities that occur in pattern rollers can be detected mechanically, and by using this, abnormal ink transfer that occurs can be instantly confirmed and abnormal There has been a demand for an ink detection device for a pattern roller in an intaglio printing press capable of instructing classification and discharge of products.

In order to solve the above problems, in recent years, it was invented paying attention to a functional component as a functional material generally imparted to ink, and ink is transferred from the ridge roller onto the intaglio plate surface. In a pattern roller of an intaglio printing press, a functional detection device that detects a functional component of ink transferred to the surface of the pattern roller, and a detection value that is connected to the functional detection device and stores a detection value detected by the functional detection device A storage device, a reference value storage device that presets and stores a reference value, an analysis device that includes a comparison device that compares the detection value of the detection value storage device and the reference value of the reference value storage device, and the analysis device analyzed This is a pattern roller ink detection device including a control device for instructing the discharge of printed sheets based on the results.

The functional detection device has a detector that detects at least one of glossy, liquid crystal, infrared, ultraviolet, fluorescent, and magnetic functional components, and the detector is provided in the vicinity of the pattern roller. is there.

The functionality detection device is disposed relative to the pattern roller, and can be appropriately moved in the roller axial direction.

At least one of the detectors includes a magnetic detector composed of a magnetic sensor and a magnetic body provided near the magnetic sensor.

Furthermore, a functional detection means for detecting the functional component of the ink on the surface of the pattern roller of the intaglio printing press in contact and / or non-contact, and a detection value storage means for storing the detection value detected by the functionality detection means A reference value storage means for setting and storing a reference value in advance, an analysis means comprising a comparison means for comparing the detection value of the detection value storage means with the reference value of the reference value storage means, and a result of analysis by the analysis means. And a control means for instructing to classify the discharge of the print sheet.

The ink detection device for the pattern roller in the intaglio printing press of the present invention constantly observes the ink characteristics of the ink transferred to the surface of the pattern roller, and the ink transfer failure to the pattern roller and the mixing of ink with different characteristics from other parts. Since it can be confirmed instantly, an abnormality can be detected early, and an abnormal sheet can be eliminated, thereby providing an effect of fulfilling quality control.

In addition, the pattern roller ink detection device in the intaglio printing press according to the present invention can instantaneously stop printing when the ink characteristics of the ink transferred to the surface of the pattern roller are different from the reference value. Cost can be reduced. In addition, since stable functional components can be detected, the sample extraction that has been performed by the operator in the past can be negligible, so that the workability can be greatly improved.

In addition, the pattern roller ink detection device in the intaglio printing press according to the present invention can guarantee and confirm ink transfer without excessive ink supply or great contact with the intaglio plate surface. Unnecessary wear and tear of the pattern roller due to ink accumulation on the surface and great contact with the intaglio plate surface can be suppressed, and the pattern roller can be used for a long time.

Furthermore, if the pattern roller ink detection device in the intaglio printing press of the present invention is used, even if the intaglio printing is speeded up, it has an accuracy capable of reliably detecting the functional component of the ink transferred to the surface of the pattern roller. It is possible to respond sufficiently.

An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic view of an ink detection device for a pattern roller in an intaglio printing press according to the present invention. 2 is a schematic cross-sectional view showing a magnetic component detection state, and FIG. 3 is an enlarged schematic view of a part of the magnetic component detection state. FIG. 4 is a schematic diagram showing an infrared detection state, and FIGS. 5 and 6 are schematic diagrams showing a functional component (ink) deposition state on the pattern roller. FIG. 7 is a schematic view showing an example of a general intaglio printing machine.

The ink supply mechanism of a general intaglio printing press shown in FIG. 7 includes a fountain roller (8) and an ink discharge adjusting plate (4), and an ink fountain (10) and an ink fountain (10) for retaining the ink (5). Roller (8) for transferring the ink (5) of the ink to the pattern roller (6), and pattern roller for transferring the ink (5) of the roller (8) to the intaglio plate surface (3) mounted on the intaglio cylinder (2) The form comprised from (6) is common. A plurality of these ink supply mechanisms may be used depending on the type of ink used.

On the other hand, the ink detection device for the pattern roller in the intaglio printing press of the present invention shown in FIG. 1 has a functional component detection device (1) in the vicinity of the pattern surface layer of the pattern roller (6) (height of about 10 mm from the pattern surface layer). ). The functional component detection device (1) includes a detection value storage device (15) for detecting and recording the functional component of the ink transferred to the pattern roller surface layer, and a reference value storage device (for setting and storing a reference value in advance). 16) and an analysis device (11) comprising a comparison device (17) for comparing the detection value of the detection value storage device (15) with the reference value of the reference value storage device (16), and finally the analysis In this embodiment, information is transmitted to the control device (12) that instructs to classify the discharge of the print sheets based on the analysis result of the device (11).

Further, in the pattern roller ink detection apparatus in the intaglio printing press of the present invention, for example, when detecting a magnetic component as a functional component, a magnetic sensor is provided near the pattern surface layer of the pattern roller (6) as shown in FIG. In some cases, a functional component detection device having a magnetic detector (23) composed of (13) and a magnetic body (14) is installed. When detecting an infrared component as a functional component, as shown in FIG. 4, an image pickup device (21) that picks up an infrared component in the vicinity of the pattern surface layer of the pattern roller (6) and an image pickup device (21) In some cases, a functional component detection device (1) having an infrared detector (24) including an infrared light receiving element (20) for input and an infrared lamp (19) is installed.

The ink supply mechanism of a general intaglio printing machine is such that the ink (5) from the ink fountain (10) is kneaded by the fountain roller (8), and finally the intaglio plate surface (3 ). Here, no detection device is attached near the pattern roller (6). On the other hand, the pattern roller ink detection device in the intaglio printing press according to the present invention is provided with ink (5) kneaded by the reed roller (8) and transferred to the pattern roller (6) in the vicinity of the pattern roller (6). When the functional component is detected by the functional component detection device (1) and is different from the reference value inputted in advance, the ink supply is restricted to stop printing and the product (sheet) that deviates from the reference value is controlled by the control device ( According to 12), the paper is classified and discharged to a discharge rack (not shown) in the discharge section.

As an embodiment of the present invention, the case where the magnetic component of the ink (5) transferred to the pattern surface of the pattern roller (6) is detected using the functional component detection device (1) is illustrated as an example in FIG. 3 and FIG. 5 and FIG. As shown in FIG. 5, when the ink lamination on the pattern surface layer of the pattern roller (6) is not uniform, or when the appropriate ink (5) is improperly applied to the pattern surface layer of the pattern roller (6) as shown in FIG. When the functional ink (22) having another function is mixed and laminated, the magnetic sensor (13) (HP-10; manufactured by Makome Laboratories) and the magnetic body (14) as shown in FIG. The magnetic component is detected by the magnetic detector (23) configured.

The ink component containing the magnetic component on the surface of the pattern roller can be detected only by the magnetic sensor (13), but since the accuracy of the detection value is reduced by external noise, the ink transferred to the surface of the pattern roller ( 5) Convergence of the magnetic component of the magnetic component to the magnetic body (14) (for example, paramagnetic body; manganese), and detection of the magnetic body (14) by the magnetic sensor (13) improves detection accuracy. I am trying.

In addition, it can be imagined that ink is mixed into the pattern surface of the pattern roller (6) with use and adversely affects the detection of magnetic components. However, by using the magnetic detector (23) of the present invention, it is mixed into the roller surface. Then, the attenuated magnetic component and the magnetic component of the ink shortly after the transfer from the reed roller (8) can be separated and extracted.

The data acquired by the functional component detection device (1) is stored in the detection value storage device (15) and is compared with the value set in the reference value storage device (16) by the comparison device (17). If detected, the control device (12) can classify and discharge the inappropriate sheet to another discharge rack. The control device (12) can also send a stop signal for the printing machine.

FIG. 3 is a schematic cross-sectional view showing a magnetic component detection state. A plurality (two in this embodiment) of magnetic components of the ink (5) transferred to the surface of the pattern roller are installed on the detector mounting shaft (18). Detected by the functional component detection device (1). The functional component detection device (1) can be moved arbitrarily along the detector mounting shaft (18), and can detect a magnetic component at any position on the roller surface.

The functional component detection device (1) can have any configuration as long as it can detect the magnetic component. By changing the detection power of the magnetic component, it is possible to accurately extract any degree of ink lamination (deposition).

As another embodiment, the configuration of the functionality detection device (1) when an infrared component is included in ink will be described with reference to FIG. After irradiating the roller surface with an infrared lamp (19) as a light source and detecting an electromagnetic wave reflected from the surface by the infrared light receiving element (20), the functional component is converted into an infrared image by the imaging device (21), The state of the infrared component is detected.

FIG. 4 is a schematic cross-sectional view showing an infrared component detection state. An infrared ray receiving element (20) (manufactured by Hamamatsu Photonics; MCT type) is used as a light receiver to detect an electromagnetic wave of 2 μm to 25 μm, and an imaging device (21). For example, an image obtained by performing image processing on an infrared component having an electromagnetic wave of 10 μm is displayed.

There are two types of infrared component imaging devices (21), quantum type and bolometer type, which can be picked up regardless of which is selected. A bolometer type that is difficult to receive is suitable.

It is also possible to display the detected electromagnetic wave using an integrating light meter (not shown) instead of the imaging device (21). In this case, if the light amount exceeds a preset value, the operator is notified. It is also possible to issue an alarm.

In addition, although the present Example demonstrated the detection of a magnetic component and an infrared component, if the functional component to detect is an ultraviolet-ray, an ultraviolet lamp will be used as a light source, and the light receiving element will be GaP type (made by Hamamatsu Photonics), In the case of a fluorescent component, the same detection can be performed by selecting a Si type (manufactured by Hamamatsu Photonics) as a light receiving element using a fluorescent lamp as a light source.

The above-described embodiments are merely representative examples, and it is needless to say that all embodiments exist within the scope described in the claims.

In the embodiments, detection of various functional components has been described. Naturally, a detection device (for example, a two-dimensional laser displacement sensor LJ; manufactured by Keyence Corporation) detects the presence or absence of ink on the surface of the pattern roller and an appropriate ink film pressure. It is easy to guess by using and detecting. Further, in the embodiment, the case where the ink functionality detecting device on the surface of the pattern roller is installed in the vicinity of the pattern surface layer of the pattern roller (height of about 10 mm from the pattern surface layer) is exemplified. It is also possible to easily guess that various functional components are detected by providing a functional detection device.

It is the schematic of the ink detection apparatus of the pattern roller in the intaglio printing press in this invention. It is a cross-sectional schematic diagram which shows the magnetic component detection state of the ink detection apparatus of the pattern roller in the intaglio printing press in this invention. It is the schematic diagram which expanded a part of magnetic component detection state of the ink detection apparatus of the pattern roller in the intaglio printing press in this invention. It is a cross-sectional schematic diagram which shows the infrared component detection state of the ink detection apparatus of the pattern roller in the intaglio printing press in this invention. It is a schematic diagram which shows an example of the lamination | stacking (deposition) state of the functional component on the pattern roller of the ink detection apparatus of the pattern roller in the intaglio printing press in this invention. It is a schematic diagram which shows an example of the lamination | stacking (deposition) state of the functional component on the pattern roller of the ink detection apparatus of the pattern roller in the intaglio printing press in this invention. It is the schematic which shows an example of a general intaglio printing machine.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Functional component detection apparatus 2 Intaglio cylinder 3 Intaglio plate surface 4 Ink removal adjustment plate 5 Functional ink 6 Pattern roller 7 Wiping roller 8 Haze roller 9 Impression cylinder 10 Ink fountain 11 Analysis apparatus 12 Control apparatus 13 Magnetic sensor 14 Magnetic body 15 Detection Value storage device 16 Reference value storage device 17 Comparison device 18 Detector mounting shaft 19 Infrared lamp 20 Infrared light receiving element 21 Imaging device 22 Functional ink 23 having another function Magnetic detector 24 Infrared detector

Claims (5)

In the pattern roller of the intaglio printing machine that transfers ink from the candy roller onto the intaglio plate surface, the functional detection device that detects the functional component of the ink transferred to the surface of the pattern roller, and the functional detection device, A detection value storage device that stores detection values detected by the functionality detection device, a reference value storage device that presets and stores a reference value, a detection value of the detection value storage device, and a reference value of the reference value storage device And a control device for classifying and instructing the discharge of printed sheets based on the analysis result of the analysis device, and detecting the ink of the pattern roller in the intaglio printing press apparatus. The functional detection device has a detector that detects at least one of glossy, liquid crystal, infrared, ultraviolet, fluorescent, and magnetic functional components, and the detector is provided near the pattern roller. 2. An ink detecting device for a pattern roller in an intaglio printing press according to claim 1. 3. An ink detecting device for a pattern roller in an intaglio printing press according to claim 2, wherein at least one of said detectors comprises a magnetic sensor and a magnetic detector comprising a magnetic material provided in the vicinity of the magnetic sensor. . 4. The ink of a pattern roller in an intaglio printing press according to claim 1, wherein the functional detection device is disposed relative to the pattern roller and can be appropriately moved in the axial direction of the roller. Detection device.

Functional detection means for detecting the functional component of the ink on the surface of the pattern roller of the intaglio printing press in contact and / or non-contact; and a detection value storage means for storing the detection value detected by the functionality detection means; Reference value storage means for setting and storing a reference value in advance, analysis means comprising a comparison means for comparing the detection value of the detection value storage means and the reference value of the reference value storage means, and the result of analysis by the analysis means ink detection method of the pattern roller in the intaglio printing press, which comprises using a controller for classifying instructing paper discharge the printed sheet on the basis of.

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