Before a thermal printer leaves the factory, it undergoes a series of comprehensive tests to ensure its quality and performance meet high standards. Here are the main aspects of the pre - shipment testing:
1. Print Quality Testing
- Resolution Check: Use special test patterns with fine - detailed graphics and text. For example, print patterns with lines of different widths and closely - spaced dots. The printer should be able to reproduce these patterns clearly, and the resolution should reach the nominal value specified in the product specifications. A high - resolution thermal printer should be able to print sharp and distinct characters and graphics, with no blurring or smudging.
2. Print Head Performance Testing
- Heating Element Uniformity: The print head consists of multiple heating elements. Test the uniformity of these heating elements by printing a solid - colored block. If there are any defective heating elements, it will show up as lighter or darker spots on the printed block. Each heating element should heat up evenly to ensure consistent printing quality.
- Response Time: Measure the time it takes for the print head to start heating and produce a visible mark on the thermal paper once the print command is received. A short response time is crucial for high - speed printing applications, as it ensures quick and efficient output.
- Durability: Conduct a long - term durability test for the print head. Simulate a large number of print operations (e.g., hundreds or thousands of prints depending on the product's target usage scenario). After the durability test, check the condition of the print head for any signs of excessive wear, such as scratches or damage to the heating elements. The print head should still be able to maintain acceptable printing performance after the durability test.
Larisa Liu
ShenZhen Hoin Electronic Technology Co.,Ltd
Wechat :lss03655121
WhatsApp:0086 18859251634
Email:larisa.liu@hoinprinter.com
Website:www.hoinprinter.com
