Thermal printing technology is widely used in label printing, medical testing, POS cashier, industrial identification and other fields due to its advantages such as simple structure, easy maintenance and fast printing speed. Kyocera, Japan, as a world-leading manufacturer of electronic components, has become an industry benchmark product with its 4-inch 200-dot thermal print head with high precision, high reliability and long life. This article will deeply analyze its working principle, core advantages and main functions.
1. Working principle: core technology of thermal printing
1. Basic principle of thermal printing
Thermal print head (TPH) forms an image directly on thermal paper through electrothermal conversion without ink or carbon ribbon. Its core process is as follows:
Heating resistor control: The print head has 200 independent heating points built in, and each point corresponds to a micro resistor (usually made of wear-resistant ceramic material).
Thermal conduction imaging: When the current passes through the heating resistor, the temperature rises instantly (up to 200~400℃), causing the coating of the thermal paper to react chemically and develop color to form images or text.
Line-by-line printing: The print head scans along the width of the paper (4 inches/101.6mm), and achieves different depths of printing effects by precisely controlling the heating time (pulse width) and temperature.
2. Key technologies of Kyocera thermal print heads
High-density heating point array: 200 independent heating points with fine spacing (about 0.125mm), supporting 203dpi/300dpi high-resolution printing.
Wear-resistant ceramic substrate: Alumina (Al₂O₃) or aluminum nitride (AlN) ceramics are used, which are resistant to high temperatures and oxidation and extend the service life.
Intelligent temperature control technology: Built-in temperature sensor, dynamically adjusts the heating power, prevents overheating damage, and ensures printing stability.
2. Core advantages: high precision, long life, low energy consumption
1. Ultra-high printing accuracy and speed
200 dots/4 inches, supports 8 dots/mm (203dpi) or 12 dots/mm (300dpi) resolution, suitable for fine barcode and small font printing.
2. Ultra-long service life
Ceramic substrate + wear-resistant coating, can withstand a printing length of 50km~100km (depending on the use environment).
3. Low energy consumption and environmental protection characteristics
Heating on demand, only consumes electricity when printing, more energy-efficient than traditional inkjet or laser printing.
4. Wide media compatibility
Applicable to a variety of thermal materials:
Ordinary thermal paper (cash register receipts, labels)
Synthetic paper/film (water-resistant, oil-resistant, suitable for outdoor labels)
High-sensitivity thermal paper (medical testing, ECG recording)
III. Main functions and application scenarios
1. Commercial retail and POS system
Supermarket cashier: high-speed printing of shopping receipts, support for one-dimensional/two-dimensional codes.
Catering orders: high-temperature resistant thermal paper, suitable for kitchen order printing.
2. Logistics and warehouse management
Barcode label printing: high-precision printing of logistics barcodes such as GS1-128 and Code 128 to improve scanning recognition rate.
3. Medical and testing equipment
Electrocardiogram (ECG) recording: high-sensitivity printing to ensure clear and readable waveforms.
Laboratory reports: chemical-resistant, suitable for medical environments.
4. Industrial automation and identification
Production line label printing: oil-resistant and wear-resistant, suitable for manufacturing environments.
Electronic component marking: high-resolution printing of product batch, date and other information.
IV. Summary: Market competitiveness of Kyocera 4-inch 200-dot thermal print head
Kyocera 4-inch 200-dot thermal print head occupies an important position in commerce, logistics, medical care, industry and other fields with its high-precision heating points, wear-resistant ceramic substrate, intelligent temperature control and wide media compatibility. Its no consumables, low maintenance and long life make it the preferred solution in the thermal printing market. With the development of unmanned retail, intelligent logistics and smart medical care, Kyocera thermal print head will continue to promote efficient and environmentally friendly printing technology innovation