PURPOSE: To facilitate the attachment and detachment of only an ink tank, by forming a communication path to the ink tank so as to insert an ink film forming plate into said path by moving said ink tank to one direction.
CONSTITUTION: An air vent 30 and a communication path 31 are formed to the upper surface of an ink tank 26 having an almost L-shaped configuration and the connection plate 32 integrally formed to the lower part of an ink film forming plate 21 is inserted into the communication path 31 in a water-tight and freely detachable state. When a magnetic coil is excited, the magnetic ink of the ink tank 26 is attracted and supplied into a magnetic slit 22, where the leading end of a needle 16 is positioned, from an ink passage orifice 33.
TSUGE TAKEYOSHI
TORISAWA YOSHIHIRO
MAKINO AYUMI
| JPS5784867A | 1982-05-27 |