Polyester and polystyrene: why the toner base matters
The base resin decides how well toner holds together and handles heat. Most MICR toner is polystyrene. ProMark is polyester, and that changes what survives a sorter.
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Blog
Writing on MICR and check printing
The things that come up in practice: reject rates, stock, standards, sizing, and the parts of this category that are poorly explained everywhere else. Written to stay useful, so nothing here is dated.
Who writes the standards for checks
The ABA and ANSI set the MICR specifications, ASC X9 publishes and reviews the standards, and your bank adds its own rules. A check has to satisfy all of them.
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Why blank stock is a security control
Blank safety stock carries no account number and no bank name. The details print only when a check does, so the cupboard holds paper, not checks waiting to be filled in.
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A payroll day checklist for in-house check printing
Run pay day in a fixed order: supplies, file check, test page, run, inspection, count, then secure and reconcile. Each step catches what the next one cannot.
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How to read a MICR printer datasheet line by line
Read a MICR printer datasheet volume first and speed last. Here is what each line tells a check buyer, from duty cycle and capacity to fonts, security and controller.
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The fourteen E-13B characters, and what each one is for
E-13B has ten digits that carry the data and four symbols that mark the fields. Each of the fourteen is shaped for the magnetic waveform it makes, not for its looks.
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What MICR actually is, and why banks still use it
MICR is magnetic ink character recognition: a reader/sorter magnetizes the ink on the bottom line of a check and compares the waveform against a standard. Here is how the read works, what the line carries, and why a magnetic read survives handling that would defeat an optical one.
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The three requirements, and which one you cannot inspect
Magnetic toner, verified calibration, and certified fonts are all required for MICR printing. You can confirm the first by looking. The other two are invisible from the outside, which is why they are the ones that fail quietly.
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The cost of a rejected check, end to end
A rejected check costs a bank exception fee, internal time to reconcile it, the work of reissuing it, and, in payroll, a conversation with somebody who was not paid. Typical MICR toner rejects at 2% to 4%, which on a run of 10,000 items is 200 to 400 of them.
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Printing checks on blank safety stock, start to finish
The full process for moving from pre-printed checks to blank stock: what the paper has to meet under ANSI X9.18, what makes a printer MICR capable, how the run is laid out and ordered, and how the output is verified before it leaves.
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Recommended monthly volume versus maximum duty cycle
Printer datasheets publish two monthly page figures that mean different things. The recommended monthly volume is the planning number. The maximum duty cycle is a ceiling, and sizing a check operation against it is the most common mistake we see.
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Ten questions to ask any MICR vendor
Vendor-neutral questions, arranged so the answers separate serious suppliers from resellers faster than a feature comparison. Includes what a good answer sounds like for each.
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ANSI X9.18 and what it asks of check stock
ANSI X9.18 governs check stock and sets five requirements: 24 lb weight recommended, Sheffield smoothness of 120 to 150, moisture content of 4.5%, sealed moisture-proof wrapping, and paper containing no ferromagnetic material. The last one is the one buyers rarely ask about.
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Why MICR toner is formulated per print engine
Signal strength is a property of the assembled machine, not of the toner alone. That single fact is why we formulate toner per engine instead of shipping one universal MICR product.
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What is in a maintenance kit, part by part
A maintenance kit replaces the fuser, photoconductor drum, transfer roller, pickup rollers, and separation pads. This explains where each part sits on the paper path and what its wear does to the printed item.
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What an Image Replacement Document is
An IRD is a paper substitute with the legal standing of the original check. It carries its own MICR line derived from the original item, which is exactly why an IRD cannot be produced on pre-printed stock.
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