Different manufacturers have different code spraying styles. Now there are two types of code spraying: ink code spraying and laser steel printing code printing. The following figure is an example, as long as there is no trace of alteration, it is the code sprayed when leaving the factory or leaving the warehouse, indicating the production date on August 1, 212.

according to the difference of working principles of inkjet printers, inkjet printers can be divided into the following three categories:

1. Continuous inkjet printer (CIJ inkjet printer for short).

its working principle: the ink is continuously ejected from a single nozzle through pressure, and breaks after crystal oscillation to form ink spots; After being charged and deflected by high voltage, the ink dots are scanned into characters on the surface of moving objects. Such as Domino A1.

2. drop on demand is referred to as DOD inkjet printer.

its working principle: the nozzle is composed of a plurality of high-precision valves. When spraying characters, the valves corresponding to the font are quickly opened and closed, and the ink is sprayed by internal constant pressure to form characters or figures on the moving surface.

3. Laser inkjet printer uses the energy of laser generator to engrave characters on the product surface.

Extended information:

The inkjet printer is a machine for inkjet printing characters (such as date of production, shelf life, batch number, etc.), icons, specifications, bar codes, anti-counterfeiting marks and other contents on the surface of products. Its advantages are that it does not touch the products, the inkjet printing contents are flexible and variable, the character size can be adjusted, and it can be connected with a computer for inkjet printing of complex databases.

Features of inkjet printer:

1. Clear and durable handwriting

Computer control, which accurately prints the required numbers and characters. Patterns and barcodes, etc.

2. High degree of automation

Automatic realization date. The change of batch and number realizes the unmanned operation of the inkjet printing process.

3. Wide application fields

It can be matched with any production line. Can spray-print trademarks, factory date, description, batch number, etc. on the surfaces of plastics, glass, paper, wood, rubber, metal and other materials and different shapes.

4. Programming is fast and convenient

Input the required information such as numbers, characters, patterns and lines through a computer or editing machine, and modify the printed information, which can be completed only by pressing a few keys.

5. The character size can be adjusted

The width and height of the font can be adjusted in a suitable range, and the font can also be bold at will.

6. The number of jet printing lines can be adjusted

The number of jet printing lines can be adjusted from 1 to 16 lines and can be matched at will.

7. The printing speed is extremely fast

The fastest printing speed can be 22 characters per second or 5 meters per minute.

8. Meet special needs

Spray printing with invisible ink, and spray printing invisible information or anti-counterfeiting identifiers on products perfectly.

Baidu encyclopedia-code spraying