How to Choose a Continuous Inkjet Printer for Your Production Line

A continuous inkjet printer is often selected only after a production line is already running. That makes it tempting to compare printers by maximum speed or purchase price alone. In practice, the right choice starts with the code you need to print, the surface receiving it and the conditions around the print station. A good match produces clear, repeatable marks without creating unnecessary operator work.

This guide explains the main decisions to make before choosing a CIJ printer for packaging, cable, electronics, automotive, food and beverage, pharmaceutical or general industrial production.

1. Define exactly what the printer must mark

Begin with the required content rather than the printer model. List every element that may appear in the code:

• Production and expiry dates
• Batch, lot and shift information
• Serial numbers or variable data
• Logos and symbols
• Linear barcodes or DataMatrix codes
• One-line or multi-line text

Then record the smallest and largest acceptable character height. A compact date code on an electronic component has different requirements from a larger, highly visible code on a carton, pipe or building material. The number of lines also matters: a simple two-line batch code can use a different print configuration from a message containing an address, product identifier and machine-readable code.

2. Match the ink to the substrate

CIJ printers are valued for non-contact printing on moving products, but the ink still needs to suit the surface. Identify whether the substrate is porous, non-porous, smooth, curved, flexible, light or dark. Common examples include plastic film, PET bottles, glass, metal cans, coated cartons, cables, pipes and electronic components.

On a light surface, a standard dye-based ink can provide strong contrast and fast, clean coding. Dark materials may require an opaque pigment ink. Adhesion, drying time, resistance to condensation, abrasion or chemicals, and the conditions after printing should all be tested with the actual production material. For dark substrates, the DAYSJET 1770-OPQ pigment ink printer is designed for high-contrast coding applications.

3. Calculate real line speed and code complexity

Maximum printer speed is not the same as usable speed for every message. Print speed is influenced by character matrix, print height, the number of lines, message length and product spacing. Measure the fastest line speed and the shortest gap between products, then test the exact message at those conditions.

Leave capacity for future changes. If a line currently prints only a date but may later add a batch number, logo or DataMatrix code, choose a platform with enough print and data-handling capacity. Product detection, encoder input and stable mounting are also important on variable-speed conveyors.

4. Select print height, line count and nozzle option together

Nozzle choice should follow the required result. Smaller nozzle options are commonly used for fine, compact characters, while larger options support bolder marks and larger character heights. However, nozzle size is only one part of the system; ink, printhead distance, character matrix and line speed also affect the finished code.

DAYSJET offers configurations including 40U, 50U, 60U and 85U. For example, the 1770-40 is configured for fine characters from 0.8 to 10 mm, while the 1770-48 supports up to eight print lines and character heights from 1.0 to 15 mm. The 1770-85 provides an 85U option for larger, clearly visible codes.

5. Check the factory environment and installation

A printer that performs well in a clean test area also needs to remain stable on the factory floor. Review the following before installation:

• Ambient temperature, humidity, dust and washdown exposure
• Vibration and the available mounting position
• Printhead-to-product distance and product movement
• Conveyor height and space for a stand or bracket
• Power, ventilation and consumable storage
• Operator access for daily inspection and cleaning

The sensor should trigger consistently, and an encoder may be needed when conveyor speed changes. A representative production trial is the best way to confirm code position and legibility.

6. Plan data and line integration

Decide how print data will reach the printer. Some lines use manual message selection; others require serial communication, database input, external sensors or connection to other packaging equipment. Build a list of interfaces and protocols before ordering. This avoids selecting a capable print engine that cannot fit the plant's existing workflow.

Also consider access control and message management. Clear templates and controlled variable fields reduce input errors when operators change products. For applications with barcodes or DataMatrix codes, verify both visual quality and scanner readability under normal line conditions.

7. Compare lifetime cost, not only purchase price

The total cost of a CIJ printer includes ink and make-up consumption, filters and service parts, cleaning time, planned maintenance, training and the cost of line stops. Ask how routine maintenance is performed, which tasks operators can complete and how technical support is delivered.

Standard operating procedures should cover startup, shutdown, nozzle inspection, cleaning and long production breaks. DAYSJET provides service and support resources for installation, training and maintenance planning.

A practical DAYSJET model shortlist

Final selection checklist

• Confirm the exact message, line count and character height.
• Test the real substrate with the proposed ink.
• Run the code at actual line speed and product spacing.
• Check printhead mounting, sensors and encoder requirements.
• Confirm data interfaces and message-control workflow.
• Review consumables, maintenance and technical support.

A sample-print test turns a general specification into a reliable production decision. Browse the DAYSJET product range or contact DAYSJET with your substrate, code sample, required height and line speed for a more focused recommendation.