JP2005238562A - Printing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printing machine or coating machine, in which an inexpensive, low electric power consuming and long life ultraviolet hardener is employed. <P>SOLUTION: This printing machine employing the ultraviolet hardener is equipped with a printer 1, which prints an object to be coated or intentionally and convexly raised, a paper guide 2, by which the resultant printed matter is supported and fed, a driving roller 3 and an idle roller 4 for driving the printed matter, a liquid pump 7 for supplying the ultraviolet hardener used for coating or the like, LEDs 8 as an ultraviolet light source necessary for hardening the hardener and a paper delivering roller 9 and an idle roller 10 for finally delivering a finished article. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a printing machine or a coating machine using an ultraviolet curing agent.

  Conventionally, printing press or coating machine using UV curing agent is selected from electrodeless high pressure mercury lamp, electroded high pressure mercury lamp, electrodeless metal halide lamp, electroded metal halide lamp, xenon lamp, ultra high pressure mercury lamp and mercury xenon lamp. Further, the curing agent was irradiated with light from one or more lamps to be cured. However, these light sources are very expensive but have a short life span, a large calorific value, and naturally large power consumption. The magnitude of the calorific value is not only a problem of power consumption, but also includes the danger of heating not only the ultraviolet curing agent but also peripheral devices and igniting them (see, for example, Patent Document 1).

JP-A-10-175368 (page 3-8)

  In recent years, materials that are cured by irradiation with ultraviolet rays, such as UV inks, UV paints, and UV adhesives, have attracted attention. This is because advantages such as fast curing speed and good workability and energy saving can be obtained. Generally, it is cured by causing a photopolymerization reaction with ultraviolet rays having a wavelength of 365 nm. As the ultraviolet light source, an electrodeless high pressure mercury lamp, an electroded high pressure mercury lamp, an electrodeless metal halide lamp, an electroded metal halide lamp, a xenon lamp, an ultrahigh pressure mercury lamp, a mercury xenon lamp, or the like is used. However, each of these lamps generates a great amount of heat, is expensive, consumes a large amount of power, and has a long lamp life. Therefore, measures to suppress heat generation and low power consumption and long life were important propositions.

  An object of the present invention is to provide a printing machine or a coating machine using an ultraviolet curing agent that is inexpensive, has low power consumption, and has a long life.

  Conventionally used as a light source that gives ultraviolet rays of the wavelength necessary for curing to UV curing agents, electrodeless high-pressure mercury lamp, electroded high-pressure mercury lamp, electrodeless metal halide lamp, electroded metal halide lamp, xenon lamp, ultra Instead of high-pressure mercury lamps and mercury xenon lamps, the use of UV-curing agents that reduce the amount of heat generated by reducing the amount of heat generated by using LEDs that emit ultraviolet rays, reduce the risk of fuming and ignition, and are low in cost, low power consumption, and long life. Provided a printing press.

  The printing machine or coating machine using the ultraviolet curing agent of the present invention is a printing machine using an ultraviolet curing agent to coat the ink or surface of printed matter and to intentionally have convex protrusions by the ultraviolet curing agent. It relates to the curing method of the curing agent. Various printers using an ultraviolet curing agent for coating ink and the surface have already been variously available as prior patents. In the conventional method, the ultraviolet curing agent is cured by at least one selected from an electrodeless high pressure mercury lamp, an electroded high pressure mercury lamp, an electrodeless metal halide lamp, an electroded metal halide lamp, a xenon lamp, an ultrahigh pressure mercury lamp, and a mercury xenon lamp. However, the use of LEDs as the light source reduces the amount of heat generated, reduces the risk of smoke and fire, and cures at low cost with low power consumption and long life. There is an effect of providing a method.

  The present invention relates to a curing method of a curing agent in a printing machine using an ultraviolet curing agent in order to coat a surface of a printed material or the like or to intentionally give a convex bulge. There are various prior art printing presses that use UV curing agents to coat surfaces or intentionally create convex bulges. However, the conventional UV curing material curing method is electrodeless. The curing material was irradiated with light from one or more lamps selected from a high pressure mercury lamp, an electroded high pressure mercury lamp, an electrodeless metal halide lamp, an electroded metal halide lamp, a xenon lamp, an ultrahigh pressure mercury lamp, and a mercury xenon lamp. However, the use of LEDs as the light source reduces the amount of heat generation, reduces the risk of smoke and ignition, and provides a low cost, low power consumption, long-life curing method.

  Referring to FIG. 1 showing the configuration of an embodiment of the present invention, a printer using an ultraviolet curing agent of this embodiment is a printer 1 that prints an object to be coated or intentionally provided with a convex bulge. In order to perform coating and the like, a paper guide 2 that supports the printed material and feeds paper, a driving roller 3 and an idler roller 4 that drive the printed material, a timing belt 5 and a motor 6 that drive paper feeding, and the like. A liquid pump 7 for supplying an ultraviolet curing agent used in the process, an LED 8 which is an ultraviolet light source necessary for curing the curing agent, a discharge roller 9 and an idle used for finally discharging a finished product And a roller 10.

  Next, the operation of this embodiment will be described with reference to FIG.

  The printed matter printed by the printer 1 is supported by the paper guide 2 and is fed by the drive roller 3 and the idle roller 4. The driving roller 3 is driven by a motor 6 through a timing belt 5. The printed matter that has been fed is conveyed directly under the liquid pump 7. Here, an ultraviolet curing agent is applied from the liquid pump 7 onto the printed matter. The printed matter coated with the ultraviolet curing agent is still supported by the paper guide 2, is fed by the drive roller 3 and the idle roller 4, and is conveyed directly under the LED 8. The applied ultraviolet curing agent is cured by ultraviolet rays, and the wavelength necessary for curing is determined for curing these ultraviolet curing materials. It is necessary to irradiate with a light source that emits a wavelength suitable for it. In the present invention, the LED 8 is used as the light source. The printed matter conveyed immediately below the LED 8 is irradiated with ultraviolet rays using the LED 8 as a light source. Thereby, the ultraviolet curing agent receives ultraviolet rays of a predetermined wavelength and cures in accordance with the specifications of the ultraviolet curing agent. Since the light amount of the LED 8 alone is relatively small and the emitted ultraviolet light travels relatively linearly, it is possible to cure the light amount and the irradiated range in a limited form. In addition, since the LED 8 does not generate a large amount of heat, it can be irradiated close to the printed matter on which the ultraviolet curing agent is applied, whereby the ultraviolet rays from the LED 8 can be received efficiently. At this point, a coating or a process with intentionally raised protrusions has been formed on the printed matter. The printed matter that has been cured by the ultraviolet curing agent is conveyed by the paper discharge roller 9 and the idle roller 4 so as to be discharged out of the printing press. The discharge roller 9 is driven by the motor 6 through the timing belt 5 in the same manner as the drive roller 3.

  As an application example, when a large amount of light is required for curing, such as when a large amount of ultraviolet curing agent is used, it is possible to increase the number of LEDs 8 serving as a light source and emit more ultraviolet light. Further, the printed material coated with the ultraviolet curing agent is moved back and forth between the driving roller 3 and the paper discharge roller 9 and passed through the ultraviolet light emitted from the LED 8 many times, thereby receiving a larger amount of light. It is also possible to make it.

  As another application example, not only the surface of the printing part has a coating or intentionally convex protrusion, but also the application to a printed matter using an ultraviolet curable ink is possible.

It is a figure which shows the structure of one embodiment of this invention.

Explanation of symbols

1 Printer 2 Paper Guide 3 Drive Roller 4 Idle Roller 5 Timing Belt 6 Motor 7 Liquid Pump 8 LED
9 Paper discharge roller 10 Idle roller

Claims (6)

A printing machine that uses UV curable ink and uses LED as a light source necessary for its curing. A printing machine that uses an ultraviolet-curing coating and uses LEDs as the light source required for curing. A printing machine that uses UV curing agent to give convex surface of silicon on the surface of printed matter, and uses LED as the light source necessary for curing. A printer for printing an object to be coated, a paper guide for supporting the printed material and feeding paper, a driving roller and an idle roller for driving the printed material, a timing belt and a motor for driving paper feeding, and a coating A liquid pump that supplies an ultraviolet curing agent used to perform the curing, an LED that is an ultraviolet light source necessary for curing the curing agent, a discharge roller that is used to finally discharge the finished product, and A printing machine comprising an idle roller. The printing machine according to claim 4, wherein a plurality of the LEDs are arranged. 5. The printed matter coated with an ultraviolet curing agent is moved back and forth between the drive roller and the paper discharge roller, and passes under the ultraviolet rays emitted from the LED many times. The printing machine described.

Images