Abstract: An ink cartridge includes a hollow ink tank body defining an accommodating chamber therein. The ink tank body has an ink outlet port and a mounted seat being formed on a bottom surface thereof. A cover member has an ink filling inlet formed therein. The cover member is fixedly secured to the hollow ink tank body and sealing the accommodating chamber of said hollow ink tank body. A pressure regulator is mounted on the mounted seat and has a box body, an elastic member, and a cover body. As a result of a negative pressure will increase during printing, the elastic member will change its shape and allow air pass through it unidirectional, and because the elastic member has an elastic force, the ink tank still maintains a certain amount of negative pressure and thereof the ink will not leak through the pressure regulator to outside.

Abstract: An ink cartridge includes a hollow ink tank body defining an accommodating chamber therein. The ink tank body has an ink outlet port and a mounted seat being formed on a bottom surface thereof. A cover member has an ink filling inlet formed therein. The cover member is fixedly secured to the hollow ink tank body and sealing the accommodating chamber of said hollow ink tank body. A pressure regulator is mounted on the mounted seat and has a box body, an elastic member, and a cover body. As a result of a negative pressure will increase during printing, the elastic member will change its shape and allow air pass through it unidirectional, and because the elastic member has an elastic force, the ink tank still maintains a certain amount of negative pressure and thereof the ink will not leak through the pressure regulator to outside.

Abstract: An ink cartridge includes an ink tank body, a cover body sealed on the ink tank body and a ventilated member. The cover body has an ink-charging inlet, a fastened recess, an air inlet port formed by an upper opening adjacent to the fastened recess and a lower opening, and a sealing member being disposed underneath the cover body. Further, the ventilated member has a fastened portion for correspondingly fastening into said fastened recess and a piercing portion connected to the fastened portion, and the piercing portion is formed therethrough with at least one air channel extending along an axial direction. Whereby the piercing portion is for piercing said sealing member to make said air inlet port be opened to an ambient atmosphere that enters to an interior of the ink tank body through the air channel of the piercing portion.

Abstract: An ink-jet printer cartridge upper cover includes an inner tube, an outer tube, a non-rigid sealing ring defining a hole at the center portion thereof, and a vent-tip forming a cavity about the bottom surface thereof and having an air passageway extending from the bottom surface of said cavity through the hole, the upper cover inner tube, and said upper cover outer tube. Inner surface of the non-rigid sealing ring hole engages with outer surface of the upper cover inner tube, and outer surface of the hole engages with the inner surface of the cavity.

Abstract: An ink-jet printer cartridge upper cover includes an inner tube, an outer tube, a non-rigid sealing ring defining a hole at the center portion thereof, and a vent-tip forming a cavity about the bottom surface thereof and having an air passageway extending from the bottom surface of said cavity through the hole, the upper cover inner tube, and said upper cover outer tube. Inner surface of the non-rigid sealing ring hole engages with outer surface of the upper cover inner tube, and outer surface of the hole engages with the inner surface of the cavity.

Abstract: A toner cartridge with a toner stirring mechanism, which is well mixed with toner contained in a toner container, thereby blocking of the toner can be prevented and fluidity of the toner also can be improved by the movement of the toner stirring mechanism in the toner container, and stable toner flow to a developing device. Furthermore, the toner stirring mechanism further includes a stirring member having a grating shape and a pair of swing rods respectively connected to two sides through the connecting rods, wherein one of the swing rods can be driven via a camshaft of the transmission mechanism being driven through a force externally transmitted, by way of a motor disposed outside of the toner container.

Abstract: A shutter device for protecting a photosensitive rotary drum includes a drum cover, at least one torsion spring, a press button, and a compression spring. The drum cover has a fixed end pivotally connected to a predetermined location of a process cartridge, a free end shielded on an exposed portion of said drum and an inside surface formed with a hook, and the torsion spring is arranged on said fixed end of the drum cover. The press button is received in a room of a side of the process cartridge, and the compression spring is positioned between a protruded rod formed inside said press button and a sleeve disposed on said room. Furthermore, the present invention has a better protection for the photosensitive rotary drum, and in the meanwhile, can be as a switch of an exposure window of the process cartridge.

Abstract: A charging contact plate is used for preventing a primary charge roller of a cartridge used in a printer from shifting in a longitudinal direction and for charging the primary charge roller. The charging contact plate includes a main plate, a semicircle plate and a contact portion. The main plate has an end fastened on the cartridge and connected with a power supply within the printer. The semicircle plate has an end disposed at another end of the main plate. And, the contact portion has an end disposed at another end of the semicircle plate and has another end contacting with the primary charge roller.