Application of Network in Printing

The Apply of Network Technology on Graphic Communication

Summary

As the government continues to push forward the liberalization of telecommunications, the development of communications and networks accompanies it. In the face of this wave of impact, whether the printing industry can still turn cyber technologies into technologies like computer technology. A boost of industry-level assistance at a time. What is it now? How to choose? How will the future change and how should it respond?

Abstract

Commmunication and the Internet are progressing under the government`s promotion. Will printers in Taiwan merge the network into their workflow as the computer on prepress when facing the new impact of new technology. What do we have and how to do?

Preface

After the computer began to be used in general work and life in the 1970s, some people boldly predicted that "printing is about to disappear." However, it turns out that computer technology is still rapidly developing, and printing is still in existence, and computer technology is applied to various processes in printing. in. In electronic color separation, digital element imaging, computer typesetting, digital printing, and even automatic control systems for various machines and equipment, a close combination of printing and computers can be seen.

The network has become one of the hottest emerging industries in the new century after the brewing and shaping of the 80s and 90s. There is no need for all walks of life to take this fast train to the top Lou, but for the printing industry, the benefits it now brings seem to be far less than the impact it has caused, and so some people have begun to make predictions as early as the invention of computers.

The development of the computer is because its characteristics bring people a convenient life, and the network is to further connect the world together, and the cooperation between the two can easily and quickly convey the message to every corner of the world, to spread knowledge and culture. The printing industry can no longer wait for it. Some people think that paper has irreplaceable portability and intimacy with electronic media. However, under the changing generations and technology, new generations are in touch with sound and light with digital media, and traditional media have a relatively attractive appeal. As a result, the challenges faced by graphic printing are even more pronounced.

è´°, network technology

The network can be regarded as two or more units communicating with each other through specific pipe connections. Therefore, it becomes a road network in geographical traffic and a telecommunication network in electronic communications, which is discussed in this article. The main part is the computer network used by computers. Therefore, the "network" is interpreted as a conduit for connecting two or more information devices, exchange of information or messages, and access for multiple people at the same time.

The computer network can be mainly divided into a local area network (LAN) and a wide area network (WAN). The following is only a brief description:

First, local area network (LAN)

Most companies use this kind of local area network to communicate and transmit internal information if they use a computer. In the local area network, they can be divided into two types: Token Ring and Ethernet.

Token Ring

2. Ethernet

Most common computer operating systems (such as the Microsoft Windows series or the Apple Mac OS series) contain functions such as networking, file transfer, or sharing of printing devices. These include the ability to connect the operating system to the office or The job site information can be transmitted automatically or on-demand, allowing quick and real-time sharing. Another advantage of using the network in a prepress environment is that it can solve most of the problems that have plagued the printer's PC and the Mac disk format incompatibility. All files are placed on a dedicated file server on the network, regardless of that. A computer can open files as long as there is corresponding software. The use of the network at the printing site allows the public works to directly send the manufacturing orders to the printing presses. The required materials or printing plates can also be sent to the positioning on time and smoothly under the cooperation of the MIS software. Real-time returns can be made through the system.

Second, the wide area network (WAN)

When the range of connections exceeds the range of the same LAN, it can be called a wide area network, and the communication media (hardware) commonly used by the wide area network at the present stage are:

PSTN (Public Telephone Network) - Personal or Family

The principle is to use a modem (MODEM, Modulator and DE Modulator, or Modulator) to convert digital data such as 0s and 1s of a computer into analog sounds similar to the human audio frequency range, and then use a general indoor telephone network to connect to another part. The computer's modem then reverses the sound to digital data in the opposite way. This is the so-called dial-in network. Before using the network service, apply for or purchase network hours from network service providers (ISPs, such as HiNet, Seednet, etc.) and use the allocated information for allocation. Connect to a dedicated server to browse through the unlimited network world. However, because of this digital-to-analogue process, this transmission method has an upper limit of speed. At present, the fastest is about 56 Kbps. Compared with the following other methods, the speed is inferior, and therefore there is a narrow band (Narrow Band). The title. However, because it has easy-to-use benefits and price advantages, it may be the first step in personal contact with the Internet.

ADSL/IDSL - suitable for: individuals, families or small companies

The emerging network medium similar to the "dial-up network" is ADSL. His full name is "Asymmetric Digital Subscriber Line." It also uses traditional telephone lines, but the difference is that it uses high-frequency parts that people cannot hear. In order to provide high-speed Internet access service, modulation/demodulation technology. ADSL can also be used to provide homeworkers access to the company's internal network services, or to provide interactive multimedia applications, such as multi-player online games, video on demand and so on. The key concept of ADSL is that the bandwidth between uplink and downlink is asymmetric. In fact, the bandwidth from the network provider to the user is relatively high. This design is to meet the limitations of the existing telephone network system. On the other hand, it also meets the usage habits and characteristics of the general use of the Internet, that is, the amount of data received by the user is far greater than the amount of data sent by the user. Because the network ISP still needs cost considerations, the actual connection rate of ADSL that has just been introduced still depends on the minimum value of the connection rate between the ADSL line and the ISP, but it is much faster than the general MODEM.

Cabel Modem - Suitable for: Personal or Family

Another emerging topic is Cable, which uses the backbone of Cable TV as the transmission medium and uses part of its bandwidth to transmit digital information. Its characteristic is that the bandwidth of each channel is fixed, but the transmission situation may be due to each The number of users of channels or drop-offs varies, and the more people who go online at the same time, the less bandwidth each person can share. On the other hand, cable TV Internet access can achieve a download speed of 10 Mbps and an upload speed of 1.5 Mbps. Cable TV broadband Internet access is used to transmit Internet data through a high-frequency wide cable TV cable. You can use a computer or TV as a tool to access the Internet. However, the computer must be equipped with a cable. In addition to the Cable Modem, the Modem TV also requires a SetTop Box to access the Internet. Purely from a technical point of view, the transmission speed of cable broadband Internet access, download up to 10Mbps per second, upload up to 1.5Mbps, but in actual operation, about 500 to 1,000 users will share this bandwidth, making The average transmission rate is affected. Cable TV broadband Internet can quickly transfer a large number of images, sounds, data, etc., so in addition to the general website browsing, you can also use two-way interactive services, such as e-banking, home security, water and electricity meter reading, e-shopping, interactive Video games, distance education, telemedicine, karaoke OK, on-demand video, etc. With the development of mature technologies in the future, the application level of CATV broadband networks will be more extensive than we can imagine today.

ISDN (Integrated Services Digital Network) - Suitable for: Individuals or Companies

A PSTN-like service, but it is a digital network, because the data transfer process does not require modulation demodulation process, the transmission bandwidth of each channel is 64Kbps, when you need a higher transmission rate, just combine multiple channels Use, you can increase the transmission speed. The use of such a network between foreign design companies and printing plants is widespread, and domestic Chunghwa Telecom has also pushed for a while, but it seems that the use of the line has not been able to slow down the use of the market. This is a good way for companies to transmit information to each other.

Leased Line (Special Line) - Suitable for: Companies or large companies in different parts of the company

Dedicated lines have higher requirements on the quality of the line than others, which results in higher network stability and full-time transfer rate (Full-time transfer rate) than in other modes. The network interruption is not allowed. Therefore, it is suitable for the delivery of important information within companies or companies that need to maintain good customer relationships.

Satellite Communications -

Using the satellite's broadband and coverage capabilities to achieve rapid transoceanic transmission requirements is a new direction for future network media.

Reference, web application

In addition to the need for physical transmission media for network use, another important point is the use of the network.

First, internal information exchange

In an office or company, when it is convenient to share information or information equipment, just purchase some network cables, hubs, and network cards (some machines have built-in network functions), and then make some settings in the operating system. You can enjoy the convenience of the network immediately. If there is a privilege demand for the use of data or files, a dedicated file server can be purchased to provide more professional services.

The common Ethernet network specifications are 10baseT and 100baseT, because the two technologies used are more popular, the equipment is simpler, and the wires are cheaper. The bandwidth can already afford the network requirements of the general office or small and medium prepress studios. . As for Gigabit or fiber optics with wider bandwidth, it can be applied to newspapers or the prepress environment that needs to deal with a large number of large-size or high-resolution images.

Second, web browsing

If you simply want to know what is the Internet or want to get new information or knowledge from the Internet, the most cost-effective and simplest way is to go to some major computer stores, many of which will provide complete computer equipment for free.