| 摘要 |
An ink supply system for writing instruments which operate with liquid ink or writing fluid. In order to make uniform the supply of ink or writing fluid independent of environmental influences, and to make possible a longer writing time with one filling, it is proposed to first store the writing fluid in a primary, permanently compressible, non-capillary and large-volume supply chamber. From this primary supply chamber, a small-volume, capillary secondary supply chamber, which communicates with the writing element, is supplied via an auxiliary charging valve which is controllable as a function of need for ink or writing fluid. The filling of the secondary supply chamber can be detected with a sensor, and the auxiliary charging valve can be controlled.
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