| 摘要 |
A process for controlling the position of fibrous webs to be printed by applying thereon a ferromagnetic printing paste in the form of very small dots which are not visible or palpable, which paste consists of at least 85% by weight, based on the total solid content, of a finely divided ferromagnetic material and furthermore of a cellulose ester and a solvent having a boiling point above 130 DEG C.
|
