An uninterrupted ink supply system is provided, including a main cartridge connected to a printer, a connection device having an automatic airflow control structure and installed on said main cartridge, and a replenishment cartridge for connecting to the connection device. The sink lifting device includes a base member designed for extending over a sink, a lifting assembly that is coupled to the base member such that the lifting assembly is couplable to a sink for removal and installation of the sink. The liquid crystal panel 2 has a first substrate 22a lying at the front side and a second substrate 22b lying at the back side. In addition, the torsional damper includes a clutch release mechanism that is responsive to centrifugal forces acting on the torsional damper to disengage the bypass clutch to reduce the torque translated directly between the input and output members at high rotational speeds.