D74 braille printing equipment is a platform device developed for braille printing. Having two sets of industrial-grade printer with high-precision, it can allow customers to achieve accurate overprint between the braille and plaintext; By outfitting the latest developed single-thread print control system, D74 can satisfy the daily production demands on braille print easily; Owning to the visual counterposition CCD system, we can greatly reduce the preparation time before production. It initiated the upgrading of braille printing from physical embossing to inkjet printing.