A wireless-emitting major-and-minor models recording method comprises major and minor units wherein the major and minor units are respectively equipped with a control circuit panel built therein, and the control circuit panel of the major unit is equipped with an emitting device to reciprocally correspond to a receiving device and a recording device built in the control circuit panel of the minor unit. Via the aforementioned structure thereof, the major and minor units are correspondingly matched to each other to form a wireless emitting-and-receiving system and provide a synchronized wireless digital recording function without being influenced by the surrounding environment, achieving the best sound-receiving effect and recording quality thereby.

An interior pressure self-adjustable ink supply cartridge structure comprises an ink container having an ink accommodating chamber and an adjacent first ink reservoir disposed at one inner side therein wherein a first linkage shallow channel is provided to connect the ink accommodating chamber and the first ink reservoir thereby, and a second linkage shallow channel is associated with the upper edge of the first ink reservoir thereof. A passageway is linked to the other end of the second linkage shallow channel and passed across to a first guide channel of a second ink reservoir disposed at the other inner side of the ink container therein. A second guide channel is disposed extending at the other side of the second ink reservoir to communicate with a continuous winding and shallow regulation duct to which a third guide channel is connected at the other end thereof to associate the regulation duct with a preset empty chamber having an air vent disposed at the upper edge thereon. Via the aforementioned structure thereof, no matter in what state the ink supply cartridge is, whether it's being delivered, opened for ink supply, or shutoff from ink supply thereof, the negative pressure established at the ink accommodating chamber therein can be appropriately maintained on a certain level, efficiently achieving an automatic self-adjustment of interior pressure of the ink supply cartridge so as to avoid the problem of ink leakage or the situation of abnormal ink supply thereby.