The main factors that cause the printing pattern to fade are air, light and heat, because there is oxygen in the air, oxygen and ink will produce an oxidation reaction, which has a great effect on the color of the pattern. There are many reasons for the discoloration of the print pattern. First, the most important thing is the printing material. If the print material is relatively soft, the gap between the particles is larger, and air touch with the surface is very large, it will Aw ka nɔgɔya ka fade. ni fɛn in bɛ nɔgɔya ani ka gɛlɛya kosɛbɛ, a bɛ cogo la, a man nɔgɔn ka fa, nka ni tile bɔra kɛnɛ kan, a bɛna fade.
Fɛɛrɛ ɲuman min bɛ se ka kɛ walasa ka o cogoya sabati, o ye ka baara kɛ ni tintiri bɛnnen ye, ani sɛbɛnni dafalen kɔfɛ ka furakɛli kɛ lakana kɔfɛ. nka n’a bɛ ultraviolet ni ordinaire incandescent yeelen na, o fana bɛna fade. o la n’i b’a fɛ ka pattern to yen waati jan kɔnɔ ka nin hakilina fila ninnu kɛ:
1, ka baara kɛ ni sigilan ɲuman ye, o min ye cogoya jɔnjɔn ye walasa ka a jira ko misali tɛ ban waati jan kɔnɔ. Aw kana inki sugandi min bɛ to ka a mara, bawo a kɔnɔfɛnw ka bon, a kɔnɔna man nɔgɔn ka oksidan sɔrɔ, o bɛna misali nɔ tiɲɛ.
2, ka misali sɛbɛnnen bila sumaya la, walasa ka a dɔn ko misali tɛ yeelen barikama jira.
