When encountering difficulties in the stabilization and standardization of the above-mentioned printing, in the case of the final printed matter, it is also conceivable to consider the standard printing of the proof as the final printed matter, or the standard color of the Japan Color Materials Association or the magazine advertising association that will use ISOfrCl30, etc. DDCP is color-adjusted as the final print. It's important to confirm whether or not the machine's printing machine can be used for either/or an one-item printing. However, once such an environment is established, it is easier to adapt to the above-mentioned distributed printing and clear printing, so that customers and printing companies can share CTP. Bring benefits.
For example, using CTP proofing, using the CTP version of the official printing press proofing, platform proofing prints and output speed, specifications, quality, cost, etc., in a wide range of DDCP output products, according to the workflow, proofing purposes, print The most appropriate way to choose the type.
CTP output machine trends
The ultraviolet light is used as the light source in the printing machine or even the drying machine. Because the energy of the light source is sufficient, the sensitivity of the PS plate is low, it is easy, and the adjustment of the exposure amount can also be adjusted according to the exposure time. Therefore, it has been popularized and used so far. However, in the 1980s when a direct screen color separation machine appeared, the light source used a laser, and from the argon laser, it developed a cheaper and long-life helium neon laser. By the time image copiers (imagesetters) appeared in the 1990s, civilian inexpensive and long-lived LED and LD sources were abundant and widespread. A number of lasers are loaded on the outer drum type image integrator, and the internal drum type has improved the productivity of the product due to the increased number of revolutions of the double rotor motor. Silver salts were used as materials, and in the second half of the 1990s, there was an image processor that used the old laser without development.
In the above-mentioned technological development process, a light source with a visible light region such as an argon laser and a high-frequency YAG laser appeared at the drupa exhibition in 1995, and a silver salt diffusion type and a photosensitive resin type was used as the plate material. The CTP of the light mode, in the 1997 Imprinta, introduced the thermal CTP of the negative thermal plate using the old LD as the light source. At the Imprinta exhibition, the UV lamp was used as the light source. The CTP of the image was formed on the nitrogen PS plate. At Drupa 2000, there have been many exhibits of CTP using UV laser tubes as a light source. In 2001, this model was put on the market as a production model.
The method for forming an image on a printing plate by a CTP output machine can be broadly classified into a thermal type in which a laser light projected on a plate to chemically change a photosensitive material and a laser light of a projection infrared wavelength forms an image by its thermal energy.
The light source of the photosensitive laser belongs to the visible light region (wavelength 400-750 nm), and the wavelengths of different lasers are argon (488 nm), high-frequency YAG (532 nm), ultraviolet LD (405 nm), and the like. Because the plate used is generally high-sensitivity, the irradiation time of the laser can be shortened and high-speed exposure can be achieved. In addition, the output is only a few mW-100mW, compared with the use of high output laser, the laser's long life. Structurally speaking, due to the common use of a simple inner drum type, equipment costs and maintenance costs are all more cost-effective. However, because the photosensitive wavelength of the printing plate belongs to the visible light region, the operation of the printing plate cannot be performed in the bright room, and it must work in the dark room. Although the automatic plate supply device can be set to work in the bright room, The operation of the plate also requires attention. Because it is highly sensitive and susceptible to temperature and humidity, it is necessary to maintain stable management of the earlobe, such as printing plate storage and transportation methods.
The thermal type laser light source uses IRLD (830 nm) and YAG (1064 nm), and has a wavelength in the non-visible region. Because the plate does not react to light, it can be operated in the light room. On the contrary, the plate has a lower sensitivity and a longer exposure time. In addition, the laser output also requires several watts or more of power, so the laser tube has a short life and high maintenance costs. The old LD is such a representative thermal source of the thermal type, but the light source and the plate adopt an outer drum type which can be approached, and multiple light sources are bundled and exposed to ensure the productivity, but the equipment price and the maintenance cost are relatively high.
As for the photosensitive plate, the light energy given is insufficient to generate reaction and savings. For example, light of 1/2 unit intensity is exposed twice, equal to 1 unit of light applied, forming an image. On the other hand, if a certain amount of thermal energy cannot be reached on a thermal plate, the plate base is aluminum and cannot accumulate heat, and it spreads out between the moments without forming an image. Clear outlets. Recently, this high resolution has been utilized to achieve high-value printing such as high-precision printing and the use of FM screening. (To be continued)
For example, using CTP proofing, using the CTP version of the official printing press proofing, platform proofing prints and output speed, specifications, quality, cost, etc., in a wide range of DDCP output products, according to the workflow, proofing purposes, print The most appropriate way to choose the type.
CTP output machine trends
The ultraviolet light is used as the light source in the printing machine or even the drying machine. Because the energy of the light source is sufficient, the sensitivity of the PS plate is low, it is easy, and the adjustment of the exposure amount can also be adjusted according to the exposure time. Therefore, it has been popularized and used so far. However, in the 1980s when a direct screen color separation machine appeared, the light source used a laser, and from the argon laser, it developed a cheaper and long-life helium neon laser. By the time image copiers (imagesetters) appeared in the 1990s, civilian inexpensive and long-lived LED and LD sources were abundant and widespread. A number of lasers are loaded on the outer drum type image integrator, and the internal drum type has improved the productivity of the product due to the increased number of revolutions of the double rotor motor. Silver salts were used as materials, and in the second half of the 1990s, there was an image processor that used the old laser without development.
In the above-mentioned technological development process, a light source with a visible light region such as an argon laser and a high-frequency YAG laser appeared at the drupa exhibition in 1995, and a silver salt diffusion type and a photosensitive resin type was used as the plate material. The CTP of the light mode, in the 1997 Imprinta, introduced the thermal CTP of the negative thermal plate using the old LD as the light source. At the Imprinta exhibition, the UV lamp was used as the light source. The CTP of the image was formed on the nitrogen PS plate. At Drupa 2000, there have been many exhibits of CTP using UV laser tubes as a light source. In 2001, this model was put on the market as a production model.
The method for forming an image on a printing plate by a CTP output machine can be broadly classified into a thermal type in which a laser light projected on a plate to chemically change a photosensitive material and a laser light of a projection infrared wavelength forms an image by its thermal energy.
The light source of the photosensitive laser belongs to the visible light region (wavelength 400-750 nm), and the wavelengths of different lasers are argon (488 nm), high-frequency YAG (532 nm), ultraviolet LD (405 nm), and the like. Because the plate used is generally high-sensitivity, the irradiation time of the laser can be shortened and high-speed exposure can be achieved. In addition, the output is only a few mW-100mW, compared with the use of high output laser, the laser's long life. Structurally speaking, due to the common use of a simple inner drum type, equipment costs and maintenance costs are all more cost-effective. However, because the photosensitive wavelength of the printing plate belongs to the visible light region, the operation of the printing plate cannot be performed in the bright room, and it must work in the dark room. Although the automatic plate supply device can be set to work in the bright room, The operation of the plate also requires attention. Because it is highly sensitive and susceptible to temperature and humidity, it is necessary to maintain stable management of the earlobe, such as printing plate storage and transportation methods.
The thermal type laser light source uses IRLD (830 nm) and YAG (1064 nm), and has a wavelength in the non-visible region. Because the plate does not react to light, it can be operated in the light room. On the contrary, the plate has a lower sensitivity and a longer exposure time. In addition, the laser output also requires several watts or more of power, so the laser tube has a short life and high maintenance costs. The old LD is such a representative thermal source of the thermal type, but the light source and the plate adopt an outer drum type which can be approached, and multiple light sources are bundled and exposed to ensure the productivity, but the equipment price and the maintenance cost are relatively high.
As for the photosensitive plate, the light energy given is insufficient to generate reaction and savings. For example, light of 1/2 unit intensity is exposed twice, equal to 1 unit of light applied, forming an image. On the other hand, if a certain amount of thermal energy cannot be reached on a thermal plate, the plate base is aluminum and cannot accumulate heat, and it spreads out between the moments without forming an image. Clear outlets. Recently, this high resolution has been utilized to achieve high-value printing such as high-precision printing and the use of FM screening. (To be continued)
Children Umbrella,Kids Umbrella,Cartoon Umbrella
Foldable Umbrella Co., Ltd. , http://www.straightumbrellas.com