| 摘要 |
1,174,175. Typewriters &c.; selective printing keyboards for printers. STANDARD TELEPHONES & CABLES Ltd. 14 July, 1967, No. 32457/67. Heading B6F. [Also in Division G5] In a printing arrangement one or more magnetic recording heads (see Division G5) extending across the width of a printing drum having a magnetizable surface record a series of magnetic marks thereon which as the drum is rotated build up a magnetic image of the information to be printed. The drum is passed through a powder applicator and the powder attracted to the image is transferred to paper pressed by a roller against the drum. The powder includes a thermal fixing agent which when the paper is passed through heating means bonds the powder to the paper surface. |
