Toner Cartridge Abstract
Toner Cartridge Claims
4. The toner cartridge as defined in claim 8, wherein one of said tilting side walls of the main member intersects with the longitudinal axis of the main member at an angle range of between 30 degrees and 80 degrees.
5. The toner cartridge as defined in claim 8 further comprising a plug device mounted in said through hole of said housing, wherein said plug device has at least one hollow portion and said filter is attached on said plug device to cover said hollow portion.
6. The toner cartridge as defined in claim 8 further comprising a plug device and a second through hole, wherein said plug device is mounted in said second through hole.
8. A toner cartridge for engagement and use with an image output device comprising: a hard plastic housing having a main member and a lid for closing said main member; said main member having side walls that are uniformly hard and smooth forming a chamber which directly abuts and holds carbon powder; said lid having a through hole with a filter engaged therein; a tip end of said main member having an outlet; and an output device mounted in said outlet; wherein said chamber can be refilled through said through hole with the filter disengaged without disengaging the toner cartridge from the image output device.
9. The toner cartridge according to claim 8, wherein said lid has a mounting portion for a circuit board for engagement to the image output device.
10. The toner cartridge according to claim 2, wherein the two pair of side walls of the upper portion are planar and parallel to the longitudinal axis of the main member.
 1. Field of the Invention
 The present invention relates generally to an electronic image output device, and more particularly to a toner cartridge.
 2. Description of the Related Art
 As shown in FIG. 1, a conventional toner cartridge 1 of an electronic image output device, such as a printer, is comprised of a housing 2 having a chamber 4 therein, and a soft bag 3 provided for containing carbon powder. The bag 3 has an outlet 5 and a cover 6 provided for sealing the outlet 5. The bag 3 is received in the chamber 4 of the housing 2 and the outlet 5 thereof is extruded out of the housing 4 to be connected to the electronic image output device. While the electronic image output device is working, the carbon powder runs out of the bag 3 via the outlet 5 and to the electronic image output device. The bag 3 will be replaced if the carbon powder runs out. The bag 3 of the toner cartridge 1 is made of a soft plastic material that is subject to vibration while moving or to deformation while the carbon powder keeps running out of the bag 3 to cause creases formed on the bag 3. In the meantime, the carbon powder is partially accumulated in the creases or even seriously in the outlet 5 to jam the outlet 5. To fix this problem, the user has to take the toner cartridge 1 out and shake it to improve the problem. In addition, while the carbon powder runs out, the bag 3 has to be replaced by a new one, therefore being uneconomical.
 In addition, while replacing the bag 3 of the toner cartridge 1, the user who does not know the replacement steps well may spend much time for the replacement, therefore incurring convenience.
SUMMARY OF THE INVENTION
 The primary objective of the present invention is to provide a toner cartridge, which can control the pressure in the cartridge to smooth the movement of carbon powder received therein.
 The secondary objective of the present invention is to provide a toner cartridge, which is recyclable to be economical and ecologically protective.
 The third objective of the present invention is to provide a toner cartridge, which is timesaving for refilling carbon power.
 According to the objectives of the present invention, a toner cartridge is comprised of a housing and an output device. The housing has a chamber therein for containing carbon powder, an outlet formed at a bottom side thereof, a through hole, and a filter mounted in the through hole. The output device is mounted at the outlet of the housing. Accordingly, the present invention smoothes the movement of the carbon powder to be economical and ecologically protective.
BRIEF DESCRIPTION OF THE DRAWINGS
 FIG. 1 is a perspective view of a conventional toner cartridge;
 FIG. 2 is a perspective view of a first preferred embodiment of the present invention;
 FIG. 3 is an exploded view of the first preferred embodiment of the present invention;
 FIG. 4 is a sectional view of the first preferred embodiment of the present invention, and
 FIG. 5 is an exploded view of a second preferred embodiment of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
 Referring to FIGS. 2-4, a toner cartridge 10 of a first preferred embodiment of the present invention is comprised a housing 11 and an output device 21.
 The housing 11 is made of a hard plastic material, such as acrylonitrile-butadiene-styrene (ABS), polyethylene (PE), and polypropylene (PP). The housing 11 has a main member 12 and a lid 14. The main member 12 has a chamber 15 formed inside for containing carbon powder therein, a rectangular opening 16 is formed at a top side thereof, and a round outlet 17 formed at a bottom side thereof. The lid 14 has a shape corresponding to the opening 16 of the main member 11 and a slot 141 formed at a periphery thereof. The lid 14 is stuck on the top side of the main member 11 and adhesively seals the opening 16. The lid 14 has a mount portion 142 for mounting a circuit board 31 . The circuit board 31 can be connected with an image output device (not shown) for monitoring whether the toner cartridge 10 is installed in a correct condition. The housing 11 has an upper portion 18, which is rectangular and has two pairs of side walls, and a lower portion 19, which extends downwards from the upper portion 18 and has two tilting side walls 191, which tilt inwards to form the tip end at which the outlet 17 is located. An angle A between the tilting side wall 191 and an imaginary axis of the outlet 17 is in a range between 30 degrees and 80 degrees. The carbon powder can slides down along the tilting side walls 191 to smoothly run out of the housing 11 via the outlet 17. The lid 14 is provided with a through hole 143 and a filter 41 mounted in the through hole 143. The filter 41 can be an air-permeable adhesive tape or other air-permeable material to allow the penetration of the air but the carbon powder to keep the carbon power from running out of the through hole 143, so that the air pressure inside the housing 143 can be effectively controlled to release the carbon powder out of the outlet 17.
 The output device 21 is mounted in the outlet 17 of the housing 11 for connecting the housing 11 and the image output device (not shown) and for closing/opening the outlet 17. Because the output device 21 is a conventional device, no detailed recitation is necessary.
 It is noted that the toner cartridge 10 of the present invention further has a plug device 51. The plug device 51 has a shape corresponding to the through hole 143 of the lid 14 and is provided with a lock portion 52 at a bottom thereof, which is engaged with the through hole 143 of the lid 14 at a periphery thereof to jam the through hole 143. The plug device 51 has a plurality of hollow portions 54 for enabling the air to flow through the through hole 143, and meanwhile, the carbon powder is still blocked by the filter 41. Accordingly, the toner cartridge of the present invention is capable of adjusting the air pressure in the chamber 15 of the housing 11. While the carbon powder in the housing 11 runs out, the user merely has to pull out the plug device 51 and refill the chamber 15 of the housing 11 with carbon powder via the through hole 143. After the refill of the carbon powder, the user merely has to put the plug device 51 back into the through hole 143 to finish the whole refill process. In the refill process, it is unnecessary for the user to detach the toner cartridge of the present invention from the image output device, thereby dramatically shortening the refill process.
 As shown in FIG. 5, the toner cartridge 10 of a second preferred embodiment of the present invention is similar to the toner cartridge 10 of the first preferred embodiment but different by that the lid 14 further includes a through hole 144 formed thereon, and the toner cartridge 10 further includes a plug device 61 having a shape corresponding to the through hole 144 to be mounted in the through hole 144 to jam and completely seal the through hole 144, such that the through hole 144 is defined as an independent inlet for refilling the carbon powder.
 In conclusion, the present invention provides the toner cartridge with the function of adjusting the air pressure in the housing to enable the carbon powder to be released out of the housing without interference. The present invention replaces the conventional soft bag with the rigid housing to contain the carbon powder that prevents the carbon powder from accumulation in toner cartridge. The tilting side walls of the housing smooth the release of the carbon powder. In addition, the toner cartridge of the present invention is recyclable to be economical. The refill process of the toner cartridge is short and less erroneous.
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