Print Head for Coding Units - Specifications and Selection

Product Specifications

Technical details and manufacturing context for Print Head

Definition

A print head is the critical component within a coding unit responsible for the precise deposition of ink, toner, or other marking materials onto products or packaging. It translates digital signals into physical marks, enabling the application of variable data such as expiration dates, batch codes, barcodes, and logos during manufacturing or packaging processes. The print head operates by receiving electronic data from the coding unit's controller. This data controls mechanisms (such as piezoelectric elements, thermal resistors, or solenoid valves) to eject tiny droplets of ink from nozzles or to bring a marking element (like a heated wire or typeface) into contact with the substrate, transferring the image or text. Typical specifications include print resolution of 300–600 dpi, print width of 25–106 mm, print speed of 30–120 m/min, nozzle diameter of 30–80 μm, operating temperature of 5–45 °C, operating humidity of 10–90 %RH, supply voltage of 24 V DC ±10%, power consumption of 30–60 W, ingress protection of IP54–IP65 (per IEC 60529), and weight of 0.5–2.5 kg. Materials commonly used include stainless steel, ceramic, polymer, and specialized alloys. These values are reference ranges; actual performance depends on the specific model and application. Always verify model-specific parameters and standards with the legal manufacturer or supplier before procurement or integration.

Working Principle

The print head receives electronic data from the coding unit's controller. This data controls mechanisms such as piezoelectric elements, thermal resistors, or solenoid valves to eject tiny droplets of ink from nozzles or to bring a marking element into contact with the substrate. The controlled ejection or contact transfers the desired image or text onto the product or packaging. The print head's operation is synchronized with the movement of the substrate to ensure accurate placement. Key parameters such as resolution, speed, and temperature affect the quality and consistency of the marks. Proper maintenance, including cleaning and alignment, is essential to prevent clogging or misalignment. If the print head shows signs of wear, such as inconsistent printing or reduced resolution, it may need replacement. The print head is designed for integration into coding units and must be selected based on the substrate width, required resolution, and environmental conditions.

Common Materials

Stainless Steel, Ceramic, Polymer, Specialized Alloys

Technical Parameters

Parameter	Typical range	Notes & selection driver
Print Resolution	300–600 dpi	Higher resolution for fine text and graphics
Print Width	25–106 mm	Select based on substrate width
Print Speed	30–120 m/min	Higher speed reduces dwell time
Nozzle Diameter	30–80 μm	Affects drop size and resolution
Operating Temperature	5–45 °C	Outside range may affect ink viscosity
Operating Humidity	10–90 %RH	Condensation may occur above 90%
Supply Voltage	24 ±10% V DC	Stable voltage required for consistent firing
Power Consumption	30–60 W	Higher for heated printheads
Ingress Protection	IP54–IP65	IP65 for dusty or wet environmentsIEC 60529
Weight	0.5–2.5 kg	Affects mounting and gantry load

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Nozzle Plate
Contains the precise orifices (nozzles) through which ink is ejected onto the substrate.

Material: Stainless Steel or Polymer
Actuator Array
Converts electrical signals into mechanical motion (e.g., piezoelectric vibration or thermal bubble formation) to eject ink droplets.

Material: Piezoelectric Ceramic or Silicon
Ink Channel / Manifold
Distributes ink from the supply system to the individual nozzles or actuator chambers.

Material: Stainless Steel or Molded Polymer
Solenoid Valve Optional
Opens and shuts the ink path to form each drop, on valve-jet type heads.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Coding Unit

View system integration details

Manufacturers of Print Head

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Frequently Asked Questions

What is the typical print resolution of a print head?

The typical print resolution is 300–600 dpi, depending on the model and application. Higher resolution is suitable for fine text and graphics. Always confirm the exact resolution for your specific print head model with the manufacturer.

What environmental conditions can a print head operate in?

The operating temperature range is 5–45 °C, and operating humidity is 10–90 %RH. Condensation may occur above 90% RH. Ensure the environment stays within these limits to maintain ink viscosity and print quality.

What is the ingress protection rating for print heads?

The ingress protection rating is IP54–IP65 per IEC 60529. IP65 is recommended for dusty or wet environments. Verify the specific rating for your model to ensure it meets your installation requirements.

How do I choose the right print head for my application?

Consider the substrate width (25–106 mm), required print resolution (300–600 dpi), print speed (30–120 m/min), and environmental conditions. Also check supply voltage (24 V DC ±10%) and power consumption (30–60 W). Always consult the manufacturer for model-specific compatibility and installation guidelines.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	0.1 to 0.5 MPa (ink supply pressure)
other spec:	Flow Rate: 0.1-5.0 mL/min, Viscosity Range: 1-50 cP, Droplet Size: 10-100 pL
temperature:	+5°C to +45°C

Print Head

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards