ISO 2033


The ISO 2033:1983 standard defines character sets for use with Optical Character Recognition or Magnetic Ink Character Recognition systems. The Japanese standard JIS X 9010:1984 is closely related.

Character set for OCR-A

The version of the encoding for the OCR-A font registered with the ISO-IR registry as ISO-IR-91 is the Japanese version, which differs from the encoding defined by ISO 2033 only in the addition of a Yen sign.

Character set for OCR-B

The version of the G0 set for the OCR-B font registered with the ISO-IR registry as ISO-IR-92 is the Japanese version, which differs from the encoding defined by ISO 2033 only in being based on JIS-Roman rather than on the ISO 646 IRV. Besides those code points, it differs from ASCII only in omitting the at sign and tilde. An additional supplementary set registered as ISO-IR-93 assigns the pound sign, universal currency sign and section sign to their ISO-8859-1 codepoints, and the backslash to the ISO-8859-1 codepoint for the Yen sign.

Character set for JIS X 9008 (JIS C 6257)

JIS X 9010 also defines character sets for the JIS X 9008:1981 "hand-printed" OCR font. These include subsets of the JIS X 0201 Roman set, lowercase letters, curly braces and overline ), and kana set and full stop, the interpunct, in addition to a set containing only the backslash, which is assigned to the same code point as in ISO-IR-93.
The JIS C 6527 font stylises the slash and backslash characters with a doubled appearance. The character names given are "Solidus" and "Reverse Solidus", matching the Unicode character names for the ASCII slash and backslash. However, the Unicode Optical Character Recognition block includes an additional code point for an "OCR Double Backslash", although not for a double slash.

Character set for E-13B

The ISO-IR-98 encoding defined by ISO 2033 encodes the character repertoire of the E13B font, as used with magnetic ink character recognition. Although ISO 2033 also specifies other encodings, the encoding for E-13B is the encoding referred to as ISO_2033_1983 by Perl libintl, and as or by the IANA. Other registered labels include, its ISO-IR registration number, and simply.
The digits are preserved in their ASCII locations. Letters and symbols unavailable in the E13B font are omitted, while specialised punctuation for bank cheques included in the E13B font is added. The same symbols are available in Unicode in the Optical Character Recognition block.