Overview
ISO 1004-1:2013 - Information processing - Magnetic ink character recognition - Part 1: Print specifications for E13B defines the print requirements for the E‑13B magnetic ink font used primarily in banking and automatic document handling. The standard specifies the shape, dimensions, magnetic signal level, and tolerances for the 10 numerals and four special MICR symbols (Transit, Amount, On‑us, Dash). It also documents known printing defects, acceptable tolerances, and considerations for paper, ink distribution and permanence.
Key topics and technical requirements
- Character configuration: Exact forms for digits 0–9 and four special symbols with reference centre‑lines and design matrices.
- Dimensions & radii: All radii are 0.165 mm (except in zero); detailed dimensions are provided in figures (units in millimetres).
- Average edge & tolerances: Average edge tolerance for stroke edges ±0.038 mm; edge irregularities allowed to ±0.089 mm with limits on summation of irregular edge portions.
- Minimum stroke widths: Minimum horizontal bar width = 0.279 mm (does not apply to vertical bars).
- Character spacing & alignment: Inter‑character spacing 3.175 mm ±0.254 mm; full‑space spacing typically 6.35 mm ±0.508 mm; adjacent spacing must not be less than 2.921 mm or more than 4.064 mm in special cases. Vertical alignment tolerance (bottom edges) up to 0.762 mm.
- Skew: Maximum allowable character skew ±1.5° relative to the document aligning edge.
- Voids & extraneous ink: Limits and measurement methods for voids, attached extraneous ink, and magnetic vs non‑magnetic contamination.
- Signal level & PCS: Definitions and requirements for magnetic signal level and relative signal level; requirements for optical clear band and print contrast signal (PCS).
- Paper & permanence: Guidance on paper characteristics and permanence tests for MICR printing.
Practical applications and users
- Financial institutions (cheque processing, automated clearing systems)
- Printing houses producing MICR lines on cheques, deposit slips and financial documents
- MICR ink and toner manufacturers ensuring correct magnetic signal and distribution
- Quality assurance and compliance teams implementing document acceptance criteria
- Hardware and software vendors for MICR readers, sorters and check scanners
Using ISO 1004-1:2013 helps ensure reliable magnetic character recognition, reduces read errors, and supports interoperability across banks and document handlers.
Related standards
- ISO 1004-2 - Print specifications for CMC7 (complements Part 1)
- Other relevant standards and annexes in ISO 1004 cover sampling, paper characteristics and conversion tables included as informative annexes in the publication.
Keywords: ISO 1004-1:2013, E13B, MICR, magnetic ink character recognition, print specifications, MICR tolerances, magnetic signal level, cheque processing.
Open preview (PDF)Information processing — Magnetic ink character recognition — Part 1: Print specifications for E13B
