2results about "Duplicating using carbon paper" patented technology

In carbonless notepads, this design facilitates peeling of individual sheets in sets and prevents damage to the paper. [Solution] In the carbonless notepad, the spine adhesive 2 that binds the laminated carbonless paper 1 is provided with non-adhesive areas 4 on at least a portion of both ends where the adhesive does not adhere, making it easy to grip the edges with your fingers.

The present application relates to a kind of printing copier transfer film polyimide composite and its preparation method and application, including mass fraction as follows component: polyimide resin 80-100 parts, conductive agent 10-30 parts, auxiliary agent 1-10 parts;The conductive agent includes polyimide adhesive, modified conductive filler, dispersing agent;The polyimide adhesive is 2,2'-di [4- (4-aminophenoxy) phenyl] propane, 2,4,6-triamino pyrimidine and 3,3',4,4'-benzophenone tetracarboxylic dianhydride polymerization reaction product;The modified conductive filler is fatty acid modified conductive filler;The conductive filler is selected from one or more of metal, metal oxide, carbon nanotube, carbon black, carbon nanofiber, graphene, graphene oxide.The present application greatly improves the conductive performance of product while ensuring stability, overcomes the deficiencies existing in the prior art, has good application prospect.