首页>
外国专利>
Envelope for books and booklets has information printed on certain places with thermo sensitive ink, which becomes transparent due to warmth produced by rubbing
Envelope for books and booklets has information printed on certain places with thermo sensitive ink, which becomes transparent due to warmth produced by rubbing
展开▼
机译:书籍和信封的信封上的信息用热敏墨水打印在某些地方,由于摩擦产生的温热,墨水变得透明
展开▼
页面导航
摘要
著录项
相似文献
摘要
The envelope has information printed on certain places with thermo sensitive ink, which becomes transparent after rubbing due to warmth produced by friction. The envelope is made up of paper, plastic, paperboard, fabric, foil or other printable material. An independent claim is also included for the outer packaging.
展开▼