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International Association of Scientific Innovation and Research (IASIR) (An Association Unifying the Sciences, Engineering, and Applied Research)

ISSN (Print): 2279-0047 ISSN (Online): 2279-0055

International Journal of Emerging Technologies in Computational and Applied Sciences (IJETCAS) ECONOMIC PRINTING OF BRAILLE DOCUMENTS Padmavathi.S, Nivedita.V,Sankari.G,RaamPrashanth.N.S,Rajat Bohra, Department of Information Technology, Amrita School of Engineering, Ettimadai, Coimbatore, Tamil Nadu, INDIA __________________________________________________________________________________________ Abstract: The objective of the paper is to explain the process of printing Braille documents using a dot matrix printer. Braille language has been the only medium of communication for the blind without the help of other people. Hence this project was attempted to help them and create an efficient and economical solution for the same. The Braille documents were printed using a dot matrix printer after removing the ink ribbon. Due consideration was given to the standard braille size and the accuracy of the impression made on paper. Various trials were done by changing paper quality and the best out of them was chosen. Keywords: Braille, aksharas, maatras, brailler _______________________________________________________________________________________________________________

I. INTRODUCTION Information is spread majorly through written documents where reading and comprehending are the sources of knowledge gathering. However, an alternative has to be developed for the visually impaired. Braille solves this problem by providing a means of communication for the blind. It makes them independent and confident as they do not require any assistance. This paper focuses on developing an economic method to print Braille documents using a dot matrix printer. According to recent statistics taken by WHO, there are 285 million blind people all over the world. Majority of them use Braille as their only source of communication. Hence by providing an affordable method to print the Braille documents, this paper would significantly contribute to the Blind society. Considering the English language, there are 26 Braille images corresponding to the 26 English alphabets. It is a one to one mapping where each alphabet can be uniquely mapped to its Braille image. However in case of the Tamil and Hindi language, the mapping is not unique. The Tamil language has 12 vowels, 18 consonants and an additional character. The complete script contains 31 letters in its independent form and an additional 216 in the combined form representing a total of 247 combinations. There are Braille images mapped to the vowels and constants which are to be combined in order to get these 247 combinations. The Hindi language has 10 vowels and 36 consonants. The Hindi script is represented as a combination of the consonants, aksharas and maatras through which vowel phonetics are added to the consonants. There is a one to one mapping for each of the consonants, aksharas and maatras with the Braille images. The converted text to Braille is to be converted into printed format in the form of impressions that can be felt by the naked hand. The dot matrix printer the closest relative to the typewriter which works in a similar by leaving impressions. The typical dot matrix printer contains 9 or 24 pins which impact on an ink ribbon whic h in turn casts a visible print on the paper. By removing the ink ribbon we make the pins strike the paper directly. Care had to be taken to make sure that the pins were not damaged in the process. The Braille so generated was done in such a way that it was in accordance with the standard Braille dot size and spacing. Being an experimental setup with a modified printer the paper chosen to be extremely thin so that the impressions could be felt . Also as the impressions would be felt on the other side of the paper where the impression was made so the conversion of the Braille to its mirror image is made. The following sections explain the printing process in detail. Section II gives a summary of the literature survey made in study of existing printing techniq ues, Section III talks in brief about the proposed methodology, Section IV explains the printing process in detail, Section V gives suggestion for future improvements and Section VI gives the conclusion. II. LITERATURE SURVEY We have researched and analyzed several Braille printing devices which have been developed earlier and that has helped significantly towards the printing of Braille documents. The list of devices based on chronological order is as follows:

IJETCAS 14-346; Š 2014, IJETCAS All Rights Reserved

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