Third, "reducing production cycle and shortening production cycle"
project
Photosensitive technology
Thermal Technology
Process reduction
Eliminating the output of the film, the imposition of the large version of the output, the workload of the edition room is greatly reduced.
Output speed
Plate output speed
Relatively slower
Free rinse process
It cannot be achieved in the future
Already implemented
Key points: The demand for output speed is relatively prominent for newspapers and other businesses that require high timeliness and relatively simple data processing. For printing businesses with long data processing cycles such as business and packaging, the simple output speed is not the key factor.
And now the thermal technology can also provide more than 100 CTP output speeds per hour for the newspaper printing market.
Fourth, "Improve production efficiency and improve the use of printing presses."
project
Photosensitive technology
Thermal Technology
The layout is free of dirt, reducing the time required for cleaning on the press
Because of the instability of internal drum imaging and development, there will be a small amount of dirt
Almost no dirt
CIP3 provides ink key data, reducing ink balance adjustment time
The printability of outlets has improved, but it is not much different from the traditional version
Significantly shorten the prepress preparation time
Dots in the printing process and the controllability of ink and ink balance
Improved, but not much different from the traditional version
High degree of control, good stability, high speed printing
Online drilling, after the first hole drilling exposure, reduce the printing machine on the overlay adjustment time
can not achieve
can be realised
Increased printability, reduced number of plate changes
Little difference with the traditional version
The printing rate is greatly improved
Operating environment
Darkroom operation, low efficiency
Brightroom operation, improved efficiency
Equipment stability guarantees continuous production safety
Inner drum type, high failure rate, poor stability (see attached sheet)
Drum type, high stability, very low failure rate
Key points: The revolutionary thermal plate making technology is also revolutionary in improving the efficiency of printing presses.
V. "Improve printing quality and increase market competitiveness"
project
Photosensitive technology
Thermal Technology
Image quality affects the quality of outlets
When the inner plate is bent in the inner drum image, the printing plate is outsourced on the roller during printing, and the microcosmic network point is modified.
The state of the printing plate is exactly the same as the state at the time of printing in the outer drum imaging.
Dot imaging range
2% to 98%
0.5%~99%
Tune range that can be controlled on the press (control of dot gain rate)
3 % to 97
1 % to 99 %
Can achieve network accuracy
Up to 300 lpi
Usually provide below 200 lpi AM outlets or FM outlets over 20 microns
Up to 1100 lpi
Can easily achieve 400 lpi or 10 micron FM outlets
Dots in the printing process and the controllability of ink and ink balance
Improved, but not much different from the traditional version
High quality stability, good consistency,
Repeated overlay accuracy
Inner drum type, there are many factors affecting overprinting accuracy (see attached data)
Outer drum imaging, online punching, guaranteed accurate overprint
Theoretically:
1, when the level of change from the brightest to the darkest level reaches 256 or so, visually it is a smooth and continuous change effect.
256=16X16—that is, there must be 16 levels of vertical and horizontal changes within a dot area.
In other words, if you output 175 lines, the required output resolution is 175x16=2,800 lpi; if you output 200 lines, the required resolution is 20016=3,200 dpi.
In fact: Based on the output speed considerations, the existing photosetter output film is basically using 2,400dpi output 175 lines or even higher. Due to the improvement of the screening technology and the improvement of the thermal imaging accuracy, which compensates for the loss of gradation and sharpness due to insufficient resolution, the thermal CTP can output more than 300 lines at 2,400 dpi.
Key points:
1. The output accuracy is the basis and prerequisite for ensuring high-quality hierarchical reproduction and sharpness reproduction.
2. The newly developed high-precision screening technology can only be practically applied to the thermal technology.
3, in the prepress and printing process, the most important is the ability to control the quality. That is, quality does not depend on human factors, maintaining a high degree of stability and consistency. The thermal CTP has a qualitative improvement in quality control capabilities.
(to be continued)