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ABA
American Bankers Association.
Aligning
Edge
The bottom edge of a check when its face is viewed.
Alignment
The vertical variation between the bottom edges of adjacent MICR
characters.
Amount Field
The character positions within the MICR
line of a check which contains the amount of the check.
Amount Symbol
Special MICR character used to separate the amount field from
the adjacent field.
ANSI
American National Standards Institute.
Auxiliary On-Us Field
An optional field to the left of the Routing Field on the MICR
line, typically used on commercial checks for the consecutive
serial number. Any data printed in this field must be preceded
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Batch Header
A serially numered process control document that preceeds a batch
of items to be entered for processing.
BFD
Bank of first deposit (of a check). |
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Character Space/Position
The space or position where a magnetic ink character appears
in the MICR line. Only one character is permitted in a character
space.
Character-to-Character Spacing
The distance between adjacent MICR characters, measured from
the right edge of one character to the right edge of the adjacent
character.
Check
An draft or order upon a bank for the payment of a certain sum
of money to a named person or to a bearer, payable upon demand.
Check Digit
A digit, usually positioned as a suffix, that can be computed
from the other digits in a field by a mathematical formula. The
check digit is used to check the validity of the total field.
Check Routing Number
The denominator of a fraction (located in the upper right corner
of a check), appearing on checks drawn on all Federal Reserve
member banks. The numerator of the fraction is the ABA
transit number.
Clear Band
A horizontal band 0.625 inch high measured from the alinging
edge of the document, parallel to that edge, and extending
the length of the document. It is reserved for the printing of
MICR characters. Also called MICR Clear Band.
CMC-7
The official name of the MICR font developed by the French company
Machines Bull which consists of ten numeric characters and five
symbols. It has been the official French standard since 1964.
Other countries using this font are found in Europe, South America
and Asia. See our World MICR Table.

Convenience Amount
The value of the check expressed in numbers. If this value differs
from the legal amount, the legal amount
prevails.
Curl
The distortion of paper which often results when paper is exposed
to heat, pressure, moisture, and drying. Laser printing the same
page more than once is a common cause, which can create paper
jams or other problems in laser printers. |
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- D - |
Dash Symbol
Special MICR character sometimes used in the transit or on-us
fields of the MICR line.
Debossment
The sunken impression of a printed character on a paper document
caused by impact printing processes that use an excessive amount
of pressure to imprint the character. It is not normally a problem
in laser printing. The specification is .001 inch from the surface
of the document, but .0015 inch debossment is permitted.
DIMM
An acronym for Dual Inline Memory Module. Like their predecessor
SIMMs, DIMMs are small integrated circuit boards that fit into
internal slots to add memory to computers or printers. Font DIMMs
are used to add fonts to printers as an alternative to font cartridges.
Driver
A computer file that describes properties of a device (such as
a laser printer) to the computer. A cartridge driver provides
details about the cartridge fonts so that they can be accessed
through applications software. |
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- E - |
E-13B
The official name of the font used in magnetic ink printing in
the United States, Canada and several other countries. Use of
the term E-13B generally implies both the character shape as
well as the magnetic aspects of the printing. It consists of
ten numeric characters and four symbols. See our World MICR Table.

Embossment
Printing that is raised above the surface of the paper as in
laser printing. Although no formal standard for embossment has
been set, the same objective of .001 inch applicable to debossment
can be assumed.
Encoding
The process of imprinting MICR characters on checks, deposits,
or other bank documents.
Escape Character
This is a control code character, corresponding to ASCII decimal
code 27 and hexadecimal code 1B, that is used by the laser printer
to identify a string of characters as a printer command. When
this character is received by the printer, the printer reads
it and its associated characters as a command to be performed
and not data to be printed. Software applications have different
ways of placing the character in the program.
External Processing Code Field (EPC Field)
A single-digit optional field for special purposes located to
the immediate left of the Routing Field on a check.
Extraneous Ink
Any magnetic ink, other than the printed MICR characters, that
is located within the Clear Band. When laser printing MICR documents,
care must be taken to assure that no part of text, lines, signatures
or other magnetic ink is printed in the Clear Band. |
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Field
A specified portion of the MICR line that is limited to a set
of one or more characters that may be treated as a unit of information.
Font
A set of characters that have similar characteristics. A laser
font has an assigned name, typeface, spacing, height, pitch,
style, stroke weight, symbol set and orientation.
Font Cartridge
A small electronic component that is inserted into the appropriate
slot of some laser printer models in order to provide additional
capabilities such as fonts or macros. See the Font Compatibility
Table for a listing of printers with available Font Cartridge
slots.
Font Height
The height of the body of a fonts characters measured in
points. It is usually slightly greater than the distance from
the bottom of a lower-case descender to the top of an unaccented
capital letter. |
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Grain
The direction of the fibers in a sheet of paper. Fibers in long
grain papers run parallel to the long dimension of the cut sheet.
In short grain papers they run parallel with the short side.
Long grain paper is generally preferred for laser check printing. |
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Home Bank
The bank from which a check (or other MICR document) has been
drawn upon. |
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ISO
International Organization for Standardization. |
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Landscape
Landscape orientation refers to printing across the length of
the page, as opposed to portrait orientation which prints across
the width of the page.
Leading Edge
The right edge of a check when its face is viewed.
Legal
Amount
The value of the check expressed in text. If this value differs
from the convenience amount, the legal amount prevails.
Logo
The name of a company or product in a special design used as
a trademark in advertising. |
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Macro
A series of laser printer escape code sequences, control codes
and data whose execution can be initiated with a single printer
command.
Magnetic Ink
Usually printer's ink to which iron oxide particles have been
added. In regard to MICR laser printing, it refers to toner with
magnetic characteristics.
Magnetic Ink Character Recognition
A system used to enable electronic and visual reading of information
on a check. The E-13B font is used in the United States, Canada
and other countries for MICR check encoding. France and several
other countries use the CMC-7 font. For more information see
our World MICR Table.
MICR
Acronym for Magnetic Ink Character Recognition. It consists of
magnetic ink printed characters that can be recognized by high-speed
magnetic and/or optical recognition equipment.
MICR
Line
The .25-inch high region centered in the clear band that contains
the E-13B MICR characters. |
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OCR
Optical Character Recognition. A technique for reading a font
optically. The font can be an OCR font, the E-13B, or others
depending on the capabilities of the hardware. OCR may refer
to the technique, the machine, or any aspect related to the technique
or machine.
On-Us Field
A data field in the MICR line on a check reserved for bank use
which usually includes the account number, an optional processing
code and, on personal checks, the serial number. An On-Us Symbol
usually appears to the right of the account number.
On-Us Symbol
Special MICR character used in the On-Us field and Auxiliary
On-Us field.
Optical Character Recognition (OCR)
Machine reading by optical means of printed, human readable characters
(as opposed to optical mark or bar code reading).
Orientation
The direction of printed characters on a page. Portrait orientation
refers to print across the width of a page. Landscape orientation
refers to print across the length of a page. |
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Pantograph
A printed pattern of a logo or art creating a decorative background.
Usually intended as an anti-alteration security feature in a
check.
Paper Dust
Particles of loose paper fibers and other residues which naturally
accumulate inside printers. Controlling paper dust is a serious
issue for Laser Printers in terms of print quality and printer
performance.
Pitch
The number of characters in a font that can be printed in a horizontal
inch. Pitch only applies to fixed-space fonts. The E-13B font
pitch is 10 characters per inch.
Point
A measurement of font height approximately equal to 1/72nd inch.
Portrait
Refers to the printing across the width of a page (letter style).
This is the opposite of landscape orientation, which is printing
across the length of the page.
Pre-encoding
Amount field encoding of deposited items prior to their receipt
by a bank.
Print Density
The relative darkness of print on the page which affects the
amount of magnetic ink applied to a page. Laser printer density
settings are controlled either mechanically (wheel or slide bar)
or through printer menu selection. |
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Reader/Sorter
High-speed automated paper handling machines that can recognize
magnetic ink characters printed in E-13B or compatible fonts.
The reading is done through recognition of the waveform of the
character, its magnetic pattern, its visual structure, or a combination
of these techniques.
Read Head
The sensing device in reader/sorters that picks up the magnetic
signals of E-13B characters. These are converted into electrical
pulses and subsequently interpreted by the reader/sorter's processor.
Registration
The printing of variable data so that it fits correctly into
areas provided for it on preprinted forms.
Routing (or Transit) Field
Positions 33 through 43 of the MICR line used for the Routing
Number, bracketed on both sides by Transit Symbols.
Routing (or Transit) Number
The numeric identifier of a particular financial institution.
It is printed in the Routing Field on checks.
Routing or Transit Symbol
Special MICR character used exclusively in the Routing (or Transit)
Field. |
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Safety Paper
Highly calendered bond paper having a surface design and/or hidden
warning indicator to identify any attempt at fraudulent alteration.
Serial Number
Often used to refer to the sequential check or document number
found in the Auxiliary On-Us Field of commercial checks and the
On-Us Field of personal checks.
Signal Level/Strength
The amplitude of the voltage wave form produced when a DC magnetized
MICR character is scanned by a magnetic reading head. The relative
signal level from any printed MICR character may vary from 50%
to 200% of its nominal signal level. Also called "signal
strength".
SIMM
An acronym for Single Inline Memory Module. SIMMs are small integrated
circuit boards that fit into internal slots to add memory to
computers or printers. Font SIMMs are used to add fonts to printers
as an alternative to font cartridges.
Skew
The amount of variation from vertical of a MICR character with
respect to the bottom edge of the document, measured in degrees.
It is not normally a problem in laser printing. The maximum allowable
skew is 1.5°.
Spacing
Fonts have either fixed or proportional spacing. Fixed-spaced
fonts have constant inter-character spacing. Character spacing
in proportionally-spaced fonts varies with the shape of the character.
Stroke Weight
A description of the thickness of the strokes that compose characters
in a font. Bold, medium and light are examples of stroke weights.
Style
The angularity of the characters in a font. Upright and italic
are examples of style.
Symbol
An E-13B character separating the fields or separating digits
within a field. The four E-13B symbols are Amount, On-Us, Transit,
and Dash. In the CMC-7 font the five symbols are named S-1 through
S-5.
Symbol Set
A unique collection and ordering of all the characters available
in a font. Most symbol sets are designed for a specific type
of application. For example, the E-13B MICR symbol set contains
only the numerals 0 through 9 and the four special symbols used
for encoding MICR on checks. |
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Trailing Edge
The left edge of a check when its face is viewed.
Transit Number
The unique identifying number assigned by the ABA to each US
bank. It appears in the upper right-hand corner of checks as
the numerator (upper portion) of a fraction.
Transit Number Field
See Routing Field.
Typeface
A unique name which identifies the set of physical and conceptual
characteristics on which a fonts design is based. |
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ValuePort
microMICR's versatile font device which attaches to the
laser printer parallel port. It is compatible with a wide
variety of printers.
Void
Absence of ink or toner within the specified outline of a printed
MICR character.
Void Pantograph
A pantograph that produces the word "void" or other
warning when a copy of the original check is made. |
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Waveshape
A MICR characters unique "magnetic footprint"
composed of the peaks and valleys of the magnetic wave form produced
when the character is scanned by a magnetic reading head. It
is the basis for electronic recognition of MICR characters.
Write Head
The device in reader/sorters that magnetizes the ink printed
in the clear band area of a MICR document. |
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