Uncover the mystery of PPML
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The concept of PPML
A new, industry-standard printing language based on XML (Extensible Markup Language) technology is getting more and more attention from insiders. It is PPML. The full name of PPML is Personalized Print Markup Language, which means "personalized printing markup language". It is a personalized print markup language developed by several member companies of the PODi Alliance. PPML uses XML as a syntactic basis, making PPML closely related to many other web applications.
The function of this language is to be able to print documents quickly, with reusable page content in the document. Before the PPML language, although it is also possible to print personalized documents, it is generally a closed digital printing system to achieve personalized printing. Therefore, PPML is the first industry standard language for personalized printing.
Speaking of PPML, you have to introduce the PODi Alliance. PODi is an alliance created by some companies related to digital printing. In 1996, it was founded by the famous Adobe System and Apple. Companies such as Computer and Scitex pioneered the development of Print On Demand applications, so PODi's original name was "Print On Demand initiative." Today, the influence of PODi has become more and more, and more and more member companies. At present, PODi's work aims to disseminate knowledge and develop standardized languages to promote the development of digital printing applications.
Tracing history
In 1993, the first color digital press was introduced. Since then, digital printing technology has developed rapidly, and digital printing has promoted the development of the personalized printing market. However, due to the use of closed, dedicated software and hardware systems for personalized digital printing, each company's personalized digital printing solutions use different standards, front and back (RIP) of digital printing systems from different manufacturers. There is no "interoperability" between them, but in a language format that is individually approved. As a result, closed digital printing systems have hampered the further development of the personalized printing market.
The end result of a closed system has many limitations for the digital printing work environment. Before the prepress designer begins to design the manuscript document, the first question to consider is to select the back end output of the digital printing system. The printing company has few choices of driver software, no matter what hardware is purchased, software compatibility. It’s a headache; for software development companies interested in developing personalized digital printing software, they also face tough decisions; or write drivers for various output devices to support more output devices, or Write drivers for several output devices, which will limit the acceptance of the software in the market. As a result, hardware companies that offer digital printing solutions often have difficulty convincing software development companies to support their own output devices. This, in turn, constrains the ability of hardware output devices to capture the digital printing market.
Obviously, before the emergence of PPML, personalized digital printing faced a dilemma: lack of a standard language in the industry, digital printing systems can not effectively use some variable page content. The digital printing system is a political structure, and each digital printing machine manufacturer develops its own solutions and its own printing technology, using different software for its own technology. As a result, the entire digital printing market is flooded with closed, incompatible digital printing solutions. There is no compatibility between the software and hardware of different systems. Even though the two digital printing systems have some similar features, the file format adopted by the system is the company's own special document format, which cannot achieve interoperability. The documents created in a digital printing system cannot be run. An additional set of digital printing systems.
Such a situation hinders the promotion of digital printing technology and digital printing applications. In turn, it has affected the enthusiasm of developers interested in digital printing to participate in this huge market. The digital printing market has not been widely promoted and expanded.
In 1999, in order to solve this problem, PODi organized seven members to vote unanimously to develop a new standardized printing language for personalized digital printing. Since then, more and more companies have joined the ranks of standard language development, among which the famous one has Adobe Systems, Agfa, Barco, and IBM.
In 2000, PODi launched the first PPML language standard. Since then, the closed digital printing environment is expected to change. All digital printing system solutions companies in the world have adopted a standardized output language, and software and hardware developers are freed from the shackles of closed systems, which will help them expand their market share. For printing companies and print customers, there are more systems (hardware and software) for them to choose from. Prepress designers can worry about what output technology is used in the back end of the digital printing system, and they can put more effort into document design.
Seven characteristics of PPML
Features 1: PPML is a meta language
PPML is a meta-language that describes the structure, documents, pages, etc. of a print job. It places the "identity" on the page via PPML <MARK>, and the PPML (MARK) element points to the page data, for example to an EPS file (Encapsulated PostScript).
PPML itself does not describe page content. Instead, the PPML select page element is placed in a page. The PPMl language does not have the ability to draw and color fill on the page. The encoding function of PPML is to place a file named ****.EPS at a certain position on the page.
Feature 2: Personalization is the essence of PPML
The essence of the PPML language is "personalization." With the increasing popularity of the Internet, personalized digital printing has become increasingly popular. The color digital printing technology that was introduced in 1993 made it possible to print high-quality color personalized information. However, digital printing technology has not been in close contact with the potential of the personalized printing market. One of the most basic reasons is that there is no industry standard language for printing high quality, reusable color documents. PostScript is the most popular language in the printing world, but it is a page description language. For non-image languages, such as PCL and AFP, there is no way to define an image, or to effectively reuse high quality images (variable information), especially for color images. Therefore, neither PostScript nor PCL and AFP can play the role of a standard digital printing standard language. The heavy responsibility comes to PPML because it has the essence of personalization.