ROHM Industrial Thermal PrintHead

ROHM's thermal printhead (STPH series) is an efficient and reliable core component of thermal printing, which is widely used in commercial, industrial and medical fields. Its core function is to achieve inkless printing through precise thermal control, with high speed, high resolution and long life. The following is a detailed introduction from the two aspects of functional characteristics and actual effects.

1. Core functions of ROHM thermal printheads

1. Core functions of thermal printing

ROHM STPH printheads use thermal printing technology, without ink or ribbon, and only produce chemical reactions on thermal paper through heating elements to form text, barcodes or images. Its core functions include:

Thermal color development: The thermal paper coating is colored by instantaneous heating (1~2 milliseconds) through micro-heating elements (heating points).

High-precision control: Supports 200~300 dpi (dots/inch) or even higher resolutions, suitable for fine printing needs (such as QR codes, small fonts).

Grayscale adjustment: Adjust the heating time through PWM (pulse width modulation) to achieve multi-level grayscale and optimize image quality.

2. High-speed response and stable printing

Microsecond heating: Use low thermal capacity materials, fast heating/cooling speed, support 200~300 mm/s high-speed printing (such as POS machine receipts, logistics labels).

Temperature compensation: Built-in temperature sensor, automatically adjust heating parameters to avoid blurring of printing due to changes in ambient temperature.

3. Energy saving and thermal management

Low voltage drive (3.3V/5V), reduce power consumption, suitable for portable devices (such as handheld label machines).

Intelligent power saving mode: Automatically reduce energy consumption when idle and extend the life of the print head.

4. High reliability and long life

Anti-wear design: Use high-durability materials, typical life of more than 50 kilometers printing distance (depending on the model).

ESD protection: Built-in electrostatic protection circuit to prevent damage to the print head due to static electricity.

5. Compact and integrated design

Modular structure: Integrated driver IC, reduce peripheral circuits, and simplify equipment design.

Ultra-thin: Suitable for space-constrained applications (such as portable medical devices).

2. The main functions of ROHM thermal print heads

1. Commercial and retail fields

POS receipt printing: Supermarkets and catering industries quickly print receipts, supporting high-speed and clear output.

Self-service terminals: Receipt printing for ATMs, self-service ticket machines and other equipment.

2. Logistics and warehouse management

Barcode/label printing: Express delivery bills, warehouse label printing, support high-precision barcodes (such as Code 128, QR codes).

Freight labels: Durable thermal printing to ensure clear and readable transportation information.

3. Medical and health equipment

Medical record output: Electrocardiogram (ECG), ultrasound report, blood glucose meter data printing.

Pharmacy label: Drug information, patient medication instructions printing.

4. Industrial and manufacturing applications

Product marking: Production date, batch number, serial number printing (such as food packaging, electronic components).

Automated production line: Cooperate with PLC system to print test data or process labels in real time.

5. Portable device applications

Handheld printers: supporting printing for logistics scanners and mobile POS machines.

Field operation equipment: durable thermal printing, suitable for harsh environments.

III. Summary of the core advantages of ROHM thermal print heads

Features Advantages

High resolution 200~300 dpi, supports fine text, barcode, image printing

High-speed printing Fast response (microsecond level), supports 200~300 mm/s high-speed output

Energy-saving design Low voltage drive (3.3V/5V), intelligent power saving mode

Long life Printing distance of more than 50 kilometers, anti-wear, anti-static (ESD protection)

Temperature adaptation Automatically compensate for ambient temperature to ensure stable printing quality

Compact structure Ultra-thin, modular design, suitable for portable and embedded devices

Ink-free and environmentally friendly No ribbon or ink required, reducing consumables costs and maintenance requirements

IV. Conclusion

ROHM STPH series thermal print heads have become an ideal choice for commercial, logistics, medical and industrial fields with their high precision, high speed, energy saving and long life. Its core role is to provide reliable inkless printing solutions for a wide range of scenarios from retail receipts to industrial markings, helping equipment manufacturers optimize performance and reduce operating costs.

For applications that require high stability, high speed or portability, ROHM thermal print heads are a highly competitive solution