| 摘要 |
1517460 Selective printing PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 14 Sept 1976 [17 Sept 1975] 38017/76 Addition to 1475264 Heading B6F An electrostatic printer is claimed in parent Specification 1,475,264 in which the or each printing needle comprises an electrically-conductive crystal whisker mounted in electrical contact with a metal holder. Preferably the crystal whisker is of conductive, doped silicon carbide. |
