What Is a Small Character Inkjet Printer Used For?

Last Updated: 2026-09-01

A small character inkjet printer, also called a CIJ printer, prints tiny non-contact codes such as dates, batch numbers, and lot marks at high line speed. That mix of small print, fast lines, and changing messages is why food, beverage, and pharma packaging rely on it as the default coding method.

The Short Answer

Small character inkjet printers work by charging and deflecting droplets of ink from a continuous stream, so the printhead never touches the product. Typical print heights run from about 1 mm to 12 mm, which covers the date codes, expiry marks, batch and lot numbers, and small logos that appear on bottles, cans, cartons, films, cables, and labels. Because the message is electronic, it can change every shift without stopping the line.

You need one when your codes are small, your line runs fast, and your messages rotate often. Where print height stays under roughly 12 mm and the surface varies from day to day, a small character inkjet printer is usually the simplest fit; larger single-line codes or high-resolution barcodes point toward other technologies instead.

What to Know in Practice

• Match the ink to the substrate: glass, glossy plastic, coated cartons, and metal each need their own formulation, so test on your actual packaging.
• Confirm the throw distance and head mounting suit your conveyor, because small characters blur quickly when the gap grows.
• Keep the printhead clean: run the cleaning cycle at startup and shutdown, and check ink and make-up levels daily.
• Verify trigger inputs (photocell or encoder) match your product spacing so no unit leaves the line unmarked.

Treated this way, a small character coder runs quietly for years; most complaints trace back to ink mismatch or skipped cleaning rather than the machine itself.

About SHICAI

SHICAI builds a complete continuous inkjet (CIJ) line for high-speed production coding, from compact units for single lanes to printers for multi-line plants. The company ships to overseas production lines and warehouses, and specifies genuine printheads and matched ink systems so each machine runs to its rated life, with service and spares arranged for export markets.

Related Questions

What is the difference between small character and large character printers?

Small character CIJ printers print fine codes from roughly 1 mm to 12 mm for dates and batch marks, while large character printers cover big text and graphics on cartons and outer packaging. Choose by the height and resolution your code needs.

What surfaces can a small character printer mark?

Almost any packaging surface, including plastic, glass, metal, film, and coated board, provided the ink is matched to the material. A sample print on your own product is the reliable way to confirm.

How much does a small character printer cost?

Pricing depends on print height, line speed, and integration you need. We do not quote a fixed figure here, so contact our team for the latest quotation.

For background on the technology, see continuous inkjet on Wikipedia; for supplier quality standards, see ISO 9001 quality management.