1. Einlita penni
Einlita vatnspenni í lit, sem samanstendur af þremur hlutum: tunnunni, hnífnum og áfyllingunni. Litað vatn í einum lit er fyllt í áfyllinguna.
2. Tveggja-lita litapenni
Notalíkanið tengist tveggja-lita vatnspenna, sem er samsettur úr þremur hlutum: pennahaldara, pennaodda og pennakjarna. Pennaoddurinn skiptist í tvo hluta, sem geta verið óeðlileg bygging eða hreiður bygging. Að sama skapi skiptist pennaáfyllingin einnig í tvo hluta, sem geta einnig verið í efri hluta eða hreiðri byggingu. Tveggja-áfyllingarnar eru fylltar með tvílitum vatni í mismunandi litum. Þessi tveggja-lita vatnspenni er með einfalda uppbyggingu og skrifuðu strikin hafa tvo aðskilda liti á sama tíma, sem gerir letrið í þrívídd. .
3. Fjöl-litapenni
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.
