1. Pinna monokroma
Pinna tal-ilma tal-kulur monokromatika, li tikkonsisti fi tliet partijiet: il-kanna, il-ponta u l-mili mill-ġdid. Ilma tal-kulur ta 'kulur wieħed jimtela fil-mili mill-ġdid.
2. Pinna b'żewġ-kuluri
Il-mudell ta' utilità huwa relatat ma' pinna tal-ilma b'żewġ-kuluri, li hija magħmula minn tliet partijiet: detentur tal-pinna, ponta tal-pinna u qalba tal-pinna. Il-ponta tal-pinna hija maqsuma f'żewġ partijiet, li jistgħu jkunu struttura involuta jew struttura nested. B'mod korrispondenti, il-mili mill-ġdid tal-pinna hija wkoll maqsuma f'żewġ partijiet, li jistgħu wkoll ikunu fi struttura involuta jew struttura nested. Iż-żewġ-mili mill-ġdid tal-partijiet huma mimlija b'żewġ ilmijiet tal-kuluri ta' kuluri differenti. Din il-pinna tal-ilma b'żewġ-kuluri għandha struttura sempliċi, u l-puplesiji miktuba għandhom żewġ kuluri distinti fl-istess ħin, li jagħmel it-tipa jkollha sens tridimensjonali. .
3. Pinna b'ħafna -kuluri
The multi-color water pen is made by embedding three or more refills in the through holes of the pen head mold according to the design requirements, and injecting plastic resin into the whole with an injection molding machine. The roll core with a tight isolation cover is fixed in the pen barrel with a gasket, the revised pen head is embedded in the pen neck end of the pen barrel, the pen core is inserted into the roll core through the through hole on the gasket to absorb the ink, and then the cover is closed. Use adhesive to seal with the pen barrel, the refill and the gasket to prevent color mixing, and install a color ring at the end of the pen. Combining multiple refills in one pen head can write different colors separately, and it will not mix colors or mix colors when placed. It is suitable for mechanized mass production, and is used for beautiful work paintings and teachers' lectures.
