Audio
books is composed of paper books and point of reading pen, when use just use a little reading pen scanning books, read pen point can make the corresponding voice or music, especially suitable for children's language learning and reading the enlightenment and visually impaired people use.Audio books not only relying on the unique novelty is popular in the children's book market, but also for the printing industry has opened up a new space for development.
Audio books sound principle is unique, it is to use the dot area rate was 15% ~ 20% of the node to a set of four behavior, logic of lattice wave, different voice function in different logic waveform diagram.When the point of reading pen read books page logic waveform figure, the plastic plastic circuit, by decoder to identify relevant information, and is controlled by a special software.Due to the demand point of reading pen to any page in the library, arbitrary can correct voice a bit, so puts forward special requirements on printing process.Past some printers did not really understand the sound principle of audio books, and did not take corresponding measures to production technology, leading to a book of individual place can not correctly and book all scrap, caused economic losses.
Audio books printing process control points
1. Determine the correct printing color sequence
According to the principle of the voice of audio books, composed of lattice logic waveform figure with black ink printing, so the key to ensure the accurate voice is accurate printing black logic waveform figure.Make sure logic waveform site accurate reduction in the figure, not deformation, printing firm.So to put black logic waveform figure on the first color printing, clings to ensure black branch on paper.
2. The control of all kinds of printing density
The current audio books printing way mainly divided into four color printing and five-color printing.Four-color printing, with black ink printing logic waveform figure, with yellow, magenta, cyan color ink printed text and images, which is neutral gray text.Basic and five-color printing four-color printing, just the words alone with grey ink printing.Printing, be sure to keep black with high density, and yellow, magenta, blue three color and gray density is not too high, otherwise the image color deep place can cause point of reading pen misreading can't even read the logic waveform figure, thus affecting the normal voice.
In addition, it is important to note that shall be determined according to the different paper different printing density.In general, when using coated paper, printing density should be controlled as follows: yellow, magenta, blue, black 1.65 1.20 1.10 0.80;When using the offset paper, printing density should be controlled as follows: yellow, magenta, blue, black 1.20 1.10 0.90 0.80.
3. Pay attention to the selection of ink
In order to ensure that logic waveform figure can be read correctly, black to use black ink printing, the other three color or four color transparency high printing ink must be used.
4. Print link must ensure accuracy of network reduction
Article in print link with plate burning signal detection network reduction, shall ensure that 3% of the site can reproduce.At the same time, plate burning machine light uniformly, and carefully clean film and glass plate burning machine, ensure that no dirty pages.
5. A precise debug printing link to the printer
First of all, to replace the first color print in black ink group and gasket, rubber cloth should be used micrometer measuring the thickness of the rubber with torque wrench tight, close pressure after running for 10 minutes then tighten once;Next, want to full check all rely on version of roller pressure on plate, different printing machine to the standard calibration of reference manuals;Finally, with a blank sheet of paper printing field, check whether there is rubber cloth sag.
Version 6. Thoroughly clean fresh liquid tank
Before printing to wash clean all the water supply system, especially to remove all oil, and change the filter core.Education version liquid pH should be controlled at 4.8 ~ 5.6, the conductivity should be controlled to 800 ~ 1200 mu s/cm.
7. To press for inspection and maintenance
Inspection on printing machine and maintenance is to prevent dot deformation.Various groups in the first place roll pillow is wiped clean, and coated with a thin layer of oil;Second to check each tooth row of teeth diao pressure, clean teeth pad and tooth slice, if you are using the old printing press, must eliminate the fault causes deformation of the outlets to printing;Finally, to clean powder spraying area, to prevent powder clumps legacy on the printing quality.
The detection of audio books
Read the code 1. Use the data detection area
The design of the root tree audio books, each can speak function area has a corresponding six data, can use the press to provide dedicated to read code to read.After reading, the data can be compared with data provided by the press, check whether consistent.
2. Use a little voice reading pen detection area
According to the logic of the audio waveform figure design, each function area corresponds to a sound, so you can use a little read pen sampling points, will hear pronunciation contrast with proof.
3. Use templates set up checkpoints, use read code and point detection
Integrated application of the above two kinds of detection methods, the finished product line with books as a benchmark in paper making templates, on the paper from top to bottom, from left to right equal to play on a number of aperture is 8 mm inspection hole, put the paper on the printing quality, and then use read code and point pen inspection hole in the printing quality of the data and voice, compared with the sample.
4. Key check the darkest color images
Due to the darkest place is easy to cover logic waveform diagram, thus cause misunderstanding and even hard to read, therefore, be especially careful check of the dark color image area.