subject: Characteristics And Classification Of Laser Imagesetter Buy Guide [print this page] 40 years of the 20th century the world's first hand Imagesetter After the advent of several decades, rapid development of pre-press technology, especially the late 70s Automatic Laser imagesetter After the successful development in the information technology wave driven by laser illuminators great color desktop publishing system has become the most significant output device. Judging from the imaging principle, laser illuminators are divided into two categories: one is winch-type; the other is the roller.
Winch laser imagesetter is also known as rolling pressure type imagesetter, film drive roller driven by a few. Film while driving, the laser will be graphic and text information recorded on film. Therefore, the film's walking speed and the exposure rate must be strictly consistent. Capstan imagesetter laser light source stationary offset by the exposure of light vibrating mirror or prism to achieve the rotation. Such illuminators are characterized by structure and operation are relatively simple, continuous recording speed, no length limit, the price is cheaper; Disadvantages: recording accuracy and precision of the lower register, generally limited to four to open the following format, suitable for black and white, or monochrome printing. As the structural defects, it can not meet the requirements of high-end printing. Therefore, the drum laser imagesetter has become the mainstream of current and future product markets.
Drum laser imagesetter film in the exposure and transmission with the winch-type different from film transferred to the drum, in the exposure process has been attracted to the drum. From its structure that it is divided into internal and external tube exposure in two ways.
Way of working within the drum imagesetter film is fixed to the inside of the drum, using high-speed rotating prism to scan the exposure to sensitive material, while the laser along the central axis of the drum move to Vice scan. This structure has the advantage of recording light beam to film distance of any point are equal. Therefore, the spot without distortion, but also effectively avoid the instability caused by film driving record low precision. With high repetition accuracy, recording speed, the advantages of easy operation.
External drum imagesetter's work is fixed in the drum to the outside of film, film, together with the drum rotation, every rotation a!? Figure shovel home disappointed school?? Ben desu dishes charges Mu Yu Dai downtown than downtown line Fortunately, the poor grasshopper called?? Ruo shovel home disappointed construed small S peptide exposed neon lie? color inlay??? Kang Qiang Chen F Xu River Snow shovel quarter? group swallow bristles quarter? Yao Ji fine line and? military's more than the salary hilly Koo horsefly ? Bru mountain elf Yao ? accept real Tounaidike?
Recent years, our illuminators manufacturers continue to strengthen research and development efforts and improve production technology, quality and output speed imagesetter be significantly enhanced. Domestic manufacturers mature technology, excellent technology, stable performance advantage has won wide recognition from customers in highly competitive markets have higher market share. Domestic high-speed, high-precision laser illuminators has attracted wide attention at home and abroad and favored customers.
In many brands of laser typesetting market purchase for the unit or the industry's production needs of the imagesetter should take the following two aspects:
1, the most important ones from the imagesetter to examine equipment performance
Positioning accuracy?? Means to accurately specify the location in the film by the exposure required positioning accuracy error of less than or equal 1 m;
Repeatability?? That color separation film output precision repeat to repeat the error is less than 0.002in;
Resolution?? Refers to unit length (or width) to identify the line number within the output color printed product should reach more than 2400dpi.
In addition, the width, speed, automation, operation conditions are also factors to be considered.
2, from the reality of the enterprise investment returns prudent accounting
The purchase of equipment investment returns when the face of any business is an important issue. Business needs, the strength of different pairs of Purchase Equipment is a big difference in focus, but are seeking cost-effective equipment, expect to earn a lower cost with higher profit. Developed market economies to achieve this goal for the enterprise provides a real possibility.
Addition to these factors, the company manual labor and business flow, the maintenance cost is also a laser imagesetter buy the basic factors should be considered.
Characteristics And Classification Of Laser Imagesetter Buy Guide
