About Rosetta Technologies

One vendor for the printer, the software, and the toner

Rosetta Technologies builds MICR check printers, check printing software, and ProMark MICR toner. Supplying all three is the whole idea, and it is what makes a performance guarantee on the output possible at all.

Four colleagues standing around a floor-standing MICR printer in a bright office, one pointing to the control panel while the others review printed output
39 years working in magnetic ink character recognition
0.1% ProMark MICR toner reject rate, or lower, independently tested
34 to 136 pages per minute across the printer line
3 product lines: printers, software, and supplies

What we do

We serve organizations that print checks and process check returns: banks and financial institutions, payroll and insurance claims operations, finance departments at every size, government agencies, universities, and schools.

The product line covers three things that jointly decide one outcome. MICR printers, from a 34 page per minute desktop unit to production systems running at 136 pages per minute. Check printing and returns processing software. And the consumables that keep the magnetic signal inside tolerance: ProMark™ MICR toner, maintenance kits, and check stock.

That outcome is whether a bank reader/sorter accepts an item or rejects it and charges for the handling. It is the number the whole product line exists to control.

Practical engineering rather than proprietary hardware

We re-engineer proven Ricoh print engines into MICR-capable hardware rather than manufacturing proprietary printers from scratch. That is a deliberate choice and it is the most distinctive thing about how we build.

The engine underneath is a machine service organizations already know, with a parts supply that does not depend on any one MICR vendor. What we build is the MICR path: toner formulated for that specific engine, calibration verified on a MICR verifier before shipping, and fonts tuned to the pairing.

The effect is that the part most likely to need service is ordinary, and the part that is specialized is the part that actually distinguishes a MICR printer.

Formulating the toner rather than reselling it

ProMark MICR toner is the first polyester-based MICR toner in the industry. Most MICR toner uses a polystyrene base. A polyester base holds together and tolerates heat better, which matters because a reader/sorter is a hot, fast, mechanically aggressive place for a printed character to survive.

It is formulated per print engine rather than sold as one universal product, and it is independently tested at a 0.1% reject rate or lower on an IBM 3890 high-speed reader/sorter. Typical MICR toner in this industry rejects at 2% to 4%.

Support as part of the product

24/7 technical support is available to customers under a support plan. Continuous maintenance under an approved service plan is also one of the five conditions of the MICR Performance Guarantee, which is less a contractual formality than a description of how the system works: the fuser bonds toner to the sheet, and bonding quality is signal strength.

Leadership

Who runs the company

Portrait of Ari Mellon, Chief executive officer
Chief executive officer

Ari Mellon

Twenty-six years in the imaging and print technology industry, including roles at Kodak, Xerox, Ricoh, Quadient and Avery Dennison. He was most recently global vice president of sales and marketing at TROY Group, and was appointed chief executive officer in September 2026.

Ari Mellon on LinkedIn
Portrait of Sue Revak, Chief financial officer
Chief financial officer

Sue Revak

Previously financial controller at Biobag Americas and at other technology companies. At Biobag she converted the business to NetSuite and reduced the line of credit to zero. Bachelor's degree in accounting, Indiana University of Pennsylvania.

Sue Revak on LinkedIn
Portrait of Matthias Regelsberger, Senior vice president and chief technology officer
Senior vice president and chief technology officer

Matthias Regelsberger

Joined in 2017 from Eastman Kodak, where he was chief engineer and director of process engineering. He leads hardware development and MICR printer engineering, including the workgroup color MICR printer. MS and PhD in physics, Ruhr University Bochum, with postgraduate chemistry at the University of California, Berkeley.

Matthias Regelsberger on LinkedIn
Portrait of Jose Sepulveda, Senior vice president
Senior vice president

Jose Sepulveda

Joined in 1999 and brings 26 years of MICR experience. He manages global MICR production press sales and workgroup sales outside North America. Previously with Danka Industries, and a 12-year veteran of United States Naval Intelligence. Electronics engineering, University of Illinois.

Jose Sepulveda on LinkedIn
Portrait of Nathaniel Schultz, Senior vice president
Senior vice president

Nathaniel Schultz

Manages manufacturing, warehouse, inventory, shipping, and vendor relationships. He joined in 2019 as a customer support representative, after nearly 12 years of United States Army service and more than 14 years in the printer and copier industry. BS and MBA, Troy University.

Nathaniel Schultz on LinkedIn
Portrait of Mariclare Hahn, Vice president
Vice president

Mariclare Hahn

Manages workgroup MICR printer and software sales for North America, and builds the partner relationships and communications behind them. She joined in 2007.

Mariclare Hahn on LinkedIn

Leonard Stone, who preceded Ari Mellon as chief executive officer, is facilitating the leadership transition through December 2026 and remains a member of our board. The appointment is recorded in the September 2026 announcement.

An engineer inspecting a printed check under a magnifier lamp beside a P 501M, with a signal analyzer on the bench behind him

A printed check under the magnifier beside a P 501M. The MICR line has to read on a bank reader the first time.

News

What we have announced recently

News

Rosetta Technologies Taps Executive Team

Leonard Stone, Rosetta Technologies president and long-time Rosetta board member, is now Rosetta’s CEO. He succeeds Paul Malinowski, who recently retired from day-to-day management. Malinowski remains on the board of directors.

Read it
A parts and supplies warehouse with racking running away from the camera, plain cartons on the shelves, a picking cart in the aisle, and a staff member reading a shelf label

Supplies are stocked rather than drop-shipped, which is what makes a next-day kit possible.

A quality bench with a printed sheet clamped flat under a measurement head, an instrument beside it, and a gloved hand steadying the sheet

A printed sheet under the measurement head. ANSI requires signal strength between 50 and 200 percent of nominal.

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