Brief description of the special printing process for Braille books

Braille is a phonetic text composed of raised points. The blind person touches the position of his hand to read the text. Therefore, Braille books are printed using special methods.

The printing process for Braille books is:

Edit → Typesetting → Proofing → Proofreading → Change → Pattern Making → Printing → Binding

First, edit

In accordance with the plate-making and printing requirements borrowed by the blind documents, editors conduct layout design.

Second, typesetting

With Braille computer typesetting system, Braille is entered, typeset and stored on disk.

Third, proofing

The text information in the disk is input into a special Braille proofer, and proofing is performed.

Fourth, proofreading

The blind-minded population reads and the blind proofreader touches the hand to do the proofing and marks the wrong text or part.

Fifth, revision

The typesetting personnel modify the text layout stored in the computer according to the marking of the proof. Repeatedly until the school reform is correct.

Sixth, making plate

The typesetting information in the disk is input into a Braille printing machine. A double sheet iron is installed on the plate-making machine. After the machine is started, according to the position of the braille point, concave and convex points are stamped on the sheet metal to make a braille printing plate.

Seventh, printing

Double concave and convex sheet metal printing plates are respectively fixed on the two rollers of the circular press, aligned with the rules, and the web plate is installed. After the machine starts, the cardboard passes through the printing plate and is pressurized by the rollers. The raised Braille dots form on the cardboard.

Eight, binding

Printed pages of book pages that have been properly printed, booked by hand, set by sewing lines, and pasted book covers, have become books for the blind to read.

Braille books can also be printed using micro-ballooning inks using a combination of platemaking and screen printing.

The main component of the microsphere foaming ink is a sphere having a diameter of 5 to 80 μm, filled with a low boiling point solvent. After the sphere is heated, the low-boiling solvent vaporizes and the volume of the microsphere increases by 5-30 times.

After printing in braille with screen printing, drying at low temperature, the microspheres in the ink were heated to expand at 130°C in the drying tunnel, and raised braille was formed at the site where there was ink.