請教前輩們，今天補落地戳時想到為什麼有的是綠色的?顏色有代表什麼嗎，我只有蓋到黑色的，好想蓋綠色的
附記，〇〇郵局3F大叔人很nice謝謝

引用

引用第29樓嘎比于2013-11-17 17:24發表的  :
覺得是彩色戳中較難收集的顏色莫過於紫色,當然紫黑更是稀少
分享目前的紫色戳
1.郵政副戳:限時郵件
[attachment=153643]
2.澎湖落地戳 (可惜戳不清)
.......

吼~ 這個封是你的收藏品嗎??

藍敏女士可是台灣近代史的名人咧.....

好東西 !

怎麼會流落出來ㄋ???

I wonder  people are using pigments instead of dyestuffs in printing stamp?

There are many  aspects in uv-resistance behavior  between these two kinds of chemicals for sure.

Understood and thanks a lot.

Frankly ,Although I'm a chemical engineer , I'm not familiar with these chemicals' details at all .

We called pigment 顏料 and dye/dyestuff 染料 in my career , and their usages are

not the same , the sunlight fastness of pigments is lower.