ISO 1004-1:2013(EN) Information processing — 

Magnetic ink character recognition — Part 1: Print specifications for E13B
ISO 1004-1:2013 was prepared by ISO/TC 68 committee, Financial services, Subcommittee SC 7, and Core banking. ISO 1004-1:2013 along with ISO 1004-2, canceled and replaced ISO 1004:1995, which has been technically revised.
ISO 1004 consists of the following parts, under the general title Information processing — Magnetic ink character recognition:
— Part 1: Print specifications for E13B
— Part 2: Print specifications for CMC7
ISO 1004-1:2013(EN) Information processing — Magnetic ink character recognition — Part 1: Print specifications for E13B
ISO 1004-1:2013 specifies the shape, dimensions, magnetic signal level, and tolerances for the E-13B characters which include 10 numerals and four special symbols printed in magnetic ink and used for the purpose of character recognition. ISO 1004-1:2013 describes the various known types of printing defects and other printing considerations, together with the tolerances permitted.

ISO 1004-2:2013(EN) Information processing — Magnetic ink character recognition — Part 2: Print specifications for CMC7
ISO 1004-2:2013 defines the shapes, dimensions and tolerances for the 10 digits 0 to 9, five symbols, and 26 letters, to be printed with magnetic ink for the purpose of character recognition. ISO 1004-2:2013 describes the various types of printing defects and other printing considerations, together with the tolerances permitted, and also contains specifications to signal level measurement.
The characters specified in Clause 4 of ISO 1004-2:2013 were developed initially for use in banks to permit automatic document handling for bank data processing, but they have application to other automatic processing systems as well.
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