Patent ID: 11479044

Abstract:
A print head (10) for a continuous inkjet printer has an ink drop generator (12), an ink supply tube (14) connected to the ink drop generator (12), and a solvent supply tube (16) connected at a first end to the ink drop generator (12) and for connection at a second end to a solvent reservoir. The solvent supply tube (16) is provided with ink flow restriction means (24, 26) for restricting a flow of ink from the ink drop generator (12) into the solvent supply tube (16). The flow restriction means (24, 26) comprise an arrangement (24) of the solvent supply tube (16) such that, for a flow direction reversing portion (26) of the solvent supply tube (16) at the first end of the solvent supply tube (16), a flow of solvent from the second end to the first end of the solvent supply tube (16) flows away from the ink drop generator (12). Also a printer including such a print head and a former for use with such a print head.