CN215769366U

CN215769366U - Carbon powder cartridge and laser printer

Info

Publication number: CN215769366U
Application number: CN202122009774.9U
Authority: CN
Inventors: 杨晓锋; 苏健强; 何永刚
Original assignee: Print Rite Unicorn Image Products Co Ltd
Current assignee: Print Rite Unicorn Image Products Co Ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-02-08
Anticipated expiration: 2031-08-24

Abstract

The utility model provides a carbon powder barrel and a laser printer, wherein the laser printer comprises a shell and a door cover, a powder barrel accommodating cavity is formed in the shell, and a contact pin mechanism is arranged in the powder barrel accommodating cavity; the contact pin mechanism comprises a base provided with a chip contact pin, a push rod assembly and a first elastic reset piece, the push rod assembly is installed at the first end of the length direction of a powder barrel accommodating cavity, the base is connected with the push rod assembly, the push rod assembly comprises a first stress part, a reset pressing part and a first force application part, the first stress part is abutted to a door cover, the first force application part is located between the reset pressing part and the first stress part in the first direction, a rear wall opposite to a powder barrel installing opening is arranged in the powder barrel accommodating cavity, the first elastic reset piece is installed on the rear wall, and the free end of the first elastic reset piece is abutted to the reset pressing part; the first stress part drives the push rod to act and drives the base to move downwards after being stressed by the door cover. The laser printer can simplify the structure of the used carbon powder cylinder.

Description

Carbon powder cartridge and laser printer

Technical Field

The utility model relates to the field of electronic imaging equipment, in particular to a carbon powder barrel and a laser printer.

Background

An electrophotographic type image forming apparatus, such as a laser printer, generally has an image processing unit and a toner cartridge detachably mounted to the image processing unit.

There is a toner cartridge including a developing unit and a toner cartridge detachably mounted on the developing unit, and since both the developing unit and the toner cartridge are detachably mounted, both use an opening and closing member to open and close a corresponding toner inlet and outlet to prevent leakage of toner in the toner cartridge. The opening and closing part on the carbon powder cylinder comprises a sealing piece positioned in the powder outlet and a sealing cover plate covering the powder outlet, an opening is formed in the sealing piece, and when the opening is aligned with the powder outlet and the sealing cover plate is opened at the same time, the powder outlet is opened. After opening the outside sealed apron of meal outlet and inside sealing member, the toner passes the meal outlet of a carbon powder section of thick bamboo and enters into the developing chamber from the income powder mouth of developing unit, and the whole linkage system structure on the current carbon powder section of thick bamboo is complicated, and assembly installation process is more, and the process is complicated, and the part is also more, and the toner cartridge cost is higher. Simultaneously, be provided with two on laser printer's the door closure and press the arch, two press the arch through the different spring coupling of two rigidity on the door closure respectively, two press the arch respectively the butt on the back wall of carbon powder section of thick bamboo behind the carbon powder kludge, wherein connect the back wall butt of pressing the arch and a section of thick bamboo main part on the spring that rigidity is little, connect the push rod butt in pressing the arch and the linked system on the spring that rigidity is big, thereby the drive goes out the powder mouth and opens, make the chip contact pilotage electricity in carbon powder box chip subassembly and the laser printer simultaneously and be connected.

Because press the arch and need drive the seal member rotation simultaneously and chip subassembly upwards removes when applying the effort to the push rod, consequently press the arch and need often receive great reaction force, the spring that is connected with this press the arch after long-time the use probably became invalid to can't open the powder outlet and also can't push the chip subassembly to the position of being connected with chip contact pin electricity in the laser printer.

SUMMERY OF THE UTILITY MODEL

A first object of the present invention is to provide a laser printer capable of simplifying the structure of a carbon powder cartridge used, ensuring stable opening of a powder outlet, and improving the stability of electrical connection between a chip module and chip contact pins.

The second purpose of the utility model is to provide a carbon powder cylinder which has simple structure and high assembly efficiency and can stably open a powder outlet.

In order to achieve the first purpose, the utility model provides a laser printer, which comprises a shell and a door cover, wherein a powder cylinder accommodating cavity is formed in the shell, one end of the powder cylinder accommodating cavity in the first direction is provided with a powder cylinder mounting opening, the door cover is mounted at the powder cylinder mounting opening and used for opening and closing the powder cylinder mounting opening, the first end of the powder cylinder accommodating cavity in the length direction is provided with a contact pin mechanism, and the contact pin mechanism is positioned above the powder cylinder accommodating cavity; the contact pin mechanism comprises a base, wherein a plurality of chip contact pins are arranged on the base; the stylus mechanism further comprises: the powder barrel comprises a powder barrel accommodating cavity, a base, a push rod assembly, a first force applying part, a second force applying part and a connecting part, wherein the powder barrel accommodating cavity is arranged at the first end of the powder barrel accommodating cavity in the length direction; the powder barrel accommodating cavity is internally provided with a rear wall opposite to the powder barrel mounting opening, the first elastic reset piece is mounted on the rear wall, and the free end of the first elastic reset piece abuts against the reset pressing part; the first force bearing part drives the push rod assembly to move after being pressed by the door cover, and the first force application part drives the base to move downwards.

By above-mentioned scheme, through the structure that can follow vertical direction removal with the base design of fixed chip contact pilotage among the laser printer to after installing a carbon powder section of thick bamboo, when closing the door closure, push rod subassembly atress drive base removes the position that makes chip contact pilotage and the chip subassembly electricity of a carbon powder section of thick bamboo be connected. Therefore, when the connecting rod mechanism on the carbon powder barrel drives the sealing element to open the powder outlet, the chip assembly does not need to be driven to move at the same time, so that the structure of the carbon powder barrel is simplified, and the user cost can be greatly reduced because the carbon powder barrel is a consumable part. Meanwhile, the powder outlet only needs to be opened by the link mechanism, so that the counterforce borne by the pressing protrusion is small, and the situation that the powder outlet cannot be opened or the chip assembly cannot be pushed to the position electrically connected with the chip contact pin in the laser printer due to the failure of a spring for connecting the pressing protrusion can be avoided.

After the carbon powder in the carbon powder barrel is used, a door cover of the laser printer is opened, the push rod assembly resets under the action of restoring force of the first elastic resetting piece, and the base of the contact pin mechanism retracts and is separated from the chip assembly of the carbon powder barrel.

In a preferred scheme, the push rod assembly comprises a force application part and a push rod; the force application component is provided with a first sliding chute and a second sliding chute, and the extension direction of the first sliding chute is intersected with the extension direction of the second sliding chute; the base is provided with a first sliding bulge, the push rod is provided with a second sliding bulge, the first sliding bulge is in sliding fit with the first sliding groove and can rotate relative to the first sliding groove, and the second sliding bulge is in sliding fit with the second sliding groove and can rotate relative to the second sliding groove; the reset pressing part and the first stress part are respectively arranged at two ends of the length direction of the push rod.

The further proposal is that the push rod and the base are respectively positioned at two opposite sides of the force application component in the length direction of the powder cylinder accommodating cavity.

Therefore, the force application component is clamped between the push rod and the base, and the stability of the connecting structure can be improved.

The push rod comprises a first rod section and a second rod section which are arranged in parallel and along the vertical direction, the second rod section is located below the first rod section, the first stress part is located at the first end of the first rod section, the second end of the first rod section is connected with the second end of the second rod section, and the second sliding protrusion is located at the first end of the second rod section.

A further solution is that the top of the first end of the second pole segment is provided with a support protrusion, which supports the first pole segment from below.

It can be seen that the support protrusion provides support for the first pole segment, ensuring stability of the push rod during movement.

The powder barrel accommodating cavity is provided with a first end and a second end, the first end is provided with a first sliding block, the second end is provided with a second sliding block, the first sliding block is arranged in the second direction, the second sliding block is arranged in the first direction, the second sliding block is arranged in the second direction, and the second sliding block is arranged in the second direction.

Therefore, the sliding block is matched with the guide groove to provide guide for the moving direction of the push rod, so that stable acting force is applied to the base by the push rod, and the push rod is prevented from overturning.

The powder inlet is formed in the bottom wall of the powder cylinder accommodating cavity and located at the first end of the powder cylinder accommodating cavity in the length direction.

In order to achieve the second object, the present invention provides a toner cartridge detachably mounted in a laser printer; the carbon powder cartridge includes: the powder feeding device comprises a barrel main body, a powder storage cavity and a powder feeding channel are arranged in the barrel main body, the powder storage cavity and the powder feeding channel are communicated with each other, a powder outlet is formed in one end of the powder feeding channel, a sealing element is arranged in the powder outlet, the sealing element comprises a sealing part and a communicating opening which are arranged along the circumferential direction, the sealing element is rotatably arranged in the powder feeding channel, the communicating opening is communicated with the powder feeding channel, and the sealing part and the powder outlet are oppositely arranged along the radial direction of the sealing element and seal the powder outlet; the stirring mechanism comprises a stirring frame, a screw rod and a driving gear set, the stirring frame is arranged in the powder storage cavity, the screw rod is arranged in the powder feeding channel, the driving gear set is arranged at the first end of the cylinder main body, and the driving gear set drives the stirring frame and the screw rod to rotate; the carbon powder cartridge further includes: the chip component is fixedly arranged at the second end of the cylinder main body; the connecting rod mechanism is arranged at the second end of the cylinder main body and comprises a connecting rod assembly and a second elastic resetting piece; the two ends of the second elastic reset piece are respectively connected with the cylinder main body and the connecting rod assembly, the connecting rod assembly is provided with a second force application part and a second force application part, the second force application part is hinged with the sealing piece, and the second force application part is stressed to only drive the sealing piece to rotate and open the powder outlet.

Therefore, when the door cover of the laser printer is covered, the first stress part is stressed to drive the push rod assembly to move and drive the base provided with the chip contact pin to move downwards, the base is electrically connected with the chip assembly of the carbon powder barrel, the chip assembly can be electrically connected with the chip contact pin stably, meanwhile, the second stress part is stressed to drive the connecting rod assembly to move, the force application part of the connecting rod assembly drives the sealing element to rotate, the communicating port is opposite to the powder outlet, and the powder outlet is opened. The connecting rod assembly is simple in structure, few in parts, simple in assembly process and capable of opening the powder outlet stably. Because the printer is internally provided with a mechanism for driving the chip contact pin to move, the chip component in the carbon powder cylinder can be designed into a structure fixed relative to the cylinder main body, the structure of the connecting rod component can be further simplified, and the assembly efficiency can be improved.

After the carbon powder in the carbon powder barrel is used, a door cover of the laser printer is opened, the push rod assembly resets under the action of restoring force of the first elastic resetting piece, and the base of the contact pin mechanism retracts and is separated from the chip assembly of the carbon powder barrel. Meanwhile, the connecting rod assembly resets under the action of restoring force of the second elastic resetting piece, the connecting rod assembly pulls the sealing piece to rotate reversely to seal the powder outlet, and residual carbon powder in the powder barrel can be prevented from being leaked when the carbon powder barrel is taken out of the laser printer.

Drawings

FIG. 1 is a structural diagram of a stirring mechanism in an embodiment of a toner cartridge of the present invention.

FIG. 2 is a block diagram of a chip assembly linkage assembly in an embodiment of the toner cartridge of the present invention.

FIG. 3 is an exploded view of the chip assembly, linkage and seal in an embodiment of the toner cartridge of the present invention.

Fig. 4 is a schematic diagram of the structure of the toner cartridge and the contact pin mechanism in the laser printer according to the embodiment of the present invention.

Fig. 5 is an exploded view of the stylus mechanism in an embodiment of the laser printer of the present invention.

Fig. 6 is a diagram showing the state in which the base of the stylus mechanism is in the retracted position and is not electrically connected to the chip module of the toner cartridge in the embodiment of the laser printer according to the present invention.

FIG. 7 is a diagram of the laser printer of the present invention with the base in an extended position and electrically connected to the chip assembly of the toner cartridge.

The utility model is further explained with reference to the drawings and the embodiments.

Detailed Description

Referring to fig. 1 to 3, in the present embodiment, the toner cartridge includes a cartridge main body 1, a first end cap 61, a second end cap 62, a stirring mechanism 2, a chip assembly 3, and a link mechanism 4. The barrel body 1 is internally provided with a powder storage cavity 11 and a powder feeding channel 12 which are mutually communicated, one end of the powder feeding channel 12 is provided with a powder outlet 121, a sealing element 5 is arranged in the powder outlet 121, the sealing element 5 comprises a sealing part 51 and a communicating port (not shown) which are circumferentially arranged, the sealing element 5 is rotatably arranged in the powder feeding channel 12, the sealing element 5 is cylindrical, the communicating port radially penetrates through the sealing element 5, the communicating port is communicated with the powder feeding channel 12, and the sealing part 51 and the powder outlet 121 are oppositely arranged along the radial direction of the sealing element 5 and seal the powder outlet 121. Preferably, the material of the sealing portion 51 is rubber.

The stirring mechanism 2 comprises a stirring frame 21, a screw rod 22 and a driving gear set 23, wherein the stirring frame 21 is arranged in the powder storage cavity 11, the screw rod 22 is arranged in the powder feeding channel 12, the driving gear set 23 is arranged at the first end 101 of the cylinder main body 1 and is positioned in a space enclosed by the first end cover 61 and the cylinder main body 1, and the driving gear set 23 drives the stirring frame 21 and the screw rod 22 to rotate. The chip component 3 is fixedly mounted at the second end 102 of the cartridge body 1, and the chip component 3 may be directly fixed to the end wall 1021 at the second end 102 of the cartridge body 1, or may be fixedly connected to the second end cap 62 and located in a space enclosed by the second end cap 62 and the cartridge body 1.

The link mechanism 4 is installed at the second end 102 of the cylinder main body 1 and located in a space enclosed by the second end cover 62 and the cylinder main body 1, and the link mechanism 4 includes a link assembly 41, an elastic restoring member and an elastic urging member. The elastic urging piece is a torsion spring 43, and the elastic resetting piece is a tension spring 42.

The two ends of the tension spring 42 are respectively connected with the cylinder main body 1 and the connecting rod assembly 41, the connecting rod assembly 41 is provided with a force receiving part 414 and a force application part 416, and the force application part 416 is hinged with the sealing member 5. The force receiving portion 414 receives force to drive the connecting rod assembly 41 to move, and the force applying portion 416 drives the sealing member 5 to rotate.

The link assembly 41 includes a push rod 411, a first link 412, and a second link 413. One end of the second end cap 62, which is far away from the powder outlet 121 in the X direction (i.e., the first direction), is provided with an opening 621, the push rod 411 extends in the X direction, and the force receiving portion 414 at the end of the push rod 411 is exposed from the opening 621, the X direction intersects with the vertical direction, preferably, the X direction is perpendicular to the vertical direction, the push rod 411 is provided with a sliding groove 417 extending in the X direction, the end wall 1021 of the second end 102 of the cartridge main body 1 is provided with two sliding protrusions 13 arranged at intervals, and both the two sliding protrusions 13 are in sliding fit with the sliding groove 417. The two ends of the torsion spring 43 are respectively connected with the push rod 411 and the first link 412, the first end 4122 of the first link 412 is hinged with the tube main body 1, the second end 4123 of the first link 412 is hinged with the second link 413, and the end of the second link 413 far away from the first link 412 is hinged with the sealing member 5. The torsion spring 43 is mounted on the end wall 1021 of the second end 102 of the barrel body 1, a position limiting protrusion 4121 is arranged on the first link 412 near the second end 4123, the first torsion arm 431 of the torsion spring 43 is always abutted against one side of the position limiting protrusion 4121 far away from the second link 413, and the second torsion arm 432 of the torsion spring 43 is abutted against the position limiting protrusion 418 of the push rod 411. A first end of the tension spring 42 is connected to the mounting post 419 of the end wall 1021 of the cartridge body 1 and a second end of the tension spring 42 is connected to the limit projection 418 of the push rod 411. In the longitudinal direction of the cartridge main body 1, the tension spring 42 is located on the side of the push rod 411 close to the cartridge main body 1.

Referring to fig. 4 to 7, the laser printer includes a housing (not shown), a door cover 7 and a contact pin mechanism 8, a powder tube accommodating chamber is formed in the housing, a powder tube mounting opening is formed in one end of the powder tube accommodating chamber in the X direction, the door cover 7 is mounted at the powder tube mounting opening and used for opening and closing the powder tube mounting opening, a powder inlet is formed in the bottom wall of the powder tube accommodating chamber, and the powder inlet is located at the first end of the powder tube accommodating chamber in the length direction.

And a first end of the powder cylinder accommodating cavity in the length direction is also provided with a contact pin mechanism 8, and the contact pin mechanism 8 is positioned above the powder cylinder accommodating cavity. The second end of the length direction of the powder cylinder containing cavity is provided with a driving gear which is used for transmitting driving force to a driving gear group 23 of the carbon powder cylinder.

The contact pin mechanism 8 comprises a base 81, a push rod assembly 82 and an elastic reset piece 83, the elastic reset piece 83 is a spring, a plurality of chip contact pins 811 are arranged on the base 81, the push rod assembly 82 is installed on the end wall of the first end of the length direction of the powder tube accommodating cavity, the base 81 is connected with the push rod assembly 82, the push rod assembly 82 is provided with a stress part 821, a reset pressing part 822 and a force application part 823, the stress part 821 is abutted to the door cover 7, and in the X direction, the force application part 823 is located between the reset pressing part 822 and the stress part 821. The powder tube accommodating cavity is internally provided with a rear wall 71 opposite to the powder tube mounting opening, the elastic resetting piece 83 is mounted on the rear wall 71, and the free end of the elastic resetting piece 83 abuts against the resetting pressing part 822. The force receiving portion 821 receives the pressure F2 applied by the door cover 7 to drive the push rod 85 to move and drive the base 81 to move downward.

The push rod assembly 82 includes a force application member 84 and a push rod 85. The force application member 84 is provided with a first chute 841 and a second chute 842, the extending direction of the first chute 841 intersects with the extending direction of the second chute 842, and the force application part 823 is located on the inner peripheral wall of the first chute 841. The base 81 is provided with a first sliding protrusion 812, the push rod 85 is provided with a second sliding protrusion (not shown), the first sliding protrusion 812 is slidably engaged with the first sliding groove 841 and can rotate relative to the first sliding groove 841, and the second sliding protrusion is slidably engaged with the second sliding groove 842 and can rotate relative to the second sliding groove 842. The reset pressing portion 822 and the force receiving portion 821 are respectively provided at both ends of the push rod 85 in the longitudinal direction. The first rod segment 851 of the push rod 85 and the base 81 are located on opposite sides of the force application member 84 in the length direction of the powder cartridge accommodating chamber. The push rod 85 comprises a first segment 851 and a second segment 852 arranged in parallel and in a vertical direction, the second segment 852 being located below the first segment 851, the force receiving portion 821 being located at a first end of the first segment 851, a second end of the first segment 851 being connected to a second end of the second segment 852, and the second sliding projection being located at a first end of the second segment 852. The top of the first end of the second pole segment 852 is provided with a support lug 854, the support lug 854 supporting the first pole segment 851 from below. At least two sliding blocks (not shown) are arranged on the end wall of the first end of the powder barrel accommodating cavity in the length direction, the sliding blocks are arranged along the X direction, a guide groove 855 extending along the X direction is formed in the push rod 85, and the sliding blocks are in sliding fit with the guide groove 855.

The working method of the laser printer comprises the following steps: the carbon powder barrel is arranged in the powder barrel accommodating cavity, the powder outlet 121 is hermetically butted with a powder inlet of the laser printer, and the powder outlet 121 is sealed by a sealing element 5. Then, the door cover 7 is closed, and after the force-receiving portion 821 receives the pressure F2, the first rod segment 851 is driven and drives the second rod segment 852 to move along the X direction, the elastic restoring member 83 is under the force-receiving state, the second sliding protrusion slides along the extending direction of the second sliding groove 842, meanwhile, the force-applying member 84 rotates, the first sliding protrusion 812 slides along the first sliding groove 841, and the force-applying portion 823 on the inner peripheral wall of the first sliding groove 841 applies a downward force to the base 81, thereby driving the base 81 to move downward until the chip contact pin 811 is electrically connected to the chip assembly. Meanwhile, the pressing protrusion on the door cover 7 applies an acting force F1 to the force receiving portion 414 and pushes the force receiving portion 414 and drives the push rod 411 to move along the X direction, the limit protrusion 418 on the push rod 411 applies an acting force to the second torsion arm 432 of the torsion spring 43, the torsion spring 43 rotates, so that the first torsion arm 431 of the torsion spring 43 pushes the limit protrusion 4121, the first link 412 rotates around the first end 4122 of the first link 412, the second end 4123 of the first link 412 drives the second link 413 to move and rotate, and the second link 413 drives the sealing element 5 to rotate until the communication port is opposite to the powder outlet port 121, the powder outlet port 121 is opened, and the powder outlet port 121 is communicated with the powder feeding channel 12.

It is thus clear that through the structure that can follow vertical direction removal of base design of fixing chip contact pilotage among the laser printer to after installing a carbon powder section of thick bamboo, when closing the door closure, push rod subassembly atress drive base removes the position that makes chip contact pilotage and the chip subassembly electricity of a carbon powder section of thick bamboo be connected. Therefore, when the connecting rod mechanism on the carbon powder barrel drives the sealing element to open the powder outlet, the chip assembly does not need to be driven to move at the same time, so that the structure of the carbon powder barrel is simplified, and the user cost can be greatly reduced because the carbon powder barrel is a consumable part. Meanwhile, the powder outlet only needs to be opened by the link mechanism, so that the counterforce borne by the pressing protrusion is small, and the situation that the powder outlet cannot be opened or the chip assembly cannot be pushed to the position electrically connected with the chip contact pin in the laser printer due to the failure of a spring for connecting the pressing protrusion can be avoided.

In addition, the connecting rod assembly can also only comprise one push rod, and the stress part and the force application part are respectively positioned at two ends of the push rod in the length direction. The first and second pole segments may be integrally formed, or may be fixedly connected, or the second end of the first pole segment abuts against the second end of the second pole segment. The connecting rod component can also be arranged on the top wall of the powder cylinder accommodating cavity. The above-described modifications also achieve the object of the present invention.

Finally, it should be emphasized that the above-described preferred embodiments of the present invention are merely examples of implementations, not limitations, and various changes and modifications may be made by those skilled in the art, without departing from the spirit and scope of the utility model, and any changes, equivalents, improvements, etc. made within the spirit and scope of the present invention are intended to be embraced therein.

Claims

1. The laser printer comprises a shell and a door cover, wherein a powder barrel accommodating cavity is formed in the shell, a powder barrel mounting opening is formed in one end of the powder barrel accommodating cavity in a first direction, the door cover is mounted at the powder barrel mounting opening and used for opening and closing the powder barrel mounting opening, a contact pin mechanism is arranged at the first end of the powder barrel accommodating cavity in the length direction, and the contact pin mechanism is located above the powder barrel accommodating cavity;

the contact pin mechanism comprises a base, wherein a plurality of chip contact pins are arranged on the base;

characterized in that the stylus mechanism further comprises:

the push rod assembly is arranged at the first end of the powder barrel accommodating cavity in the length direction, the base is connected with the push rod assembly, the push rod assembly comprises a first stress part, a reset pressing part and a first force application part, the first stress part is abutted against the door cover, and the first force application part is positioned between the reset pressing part and the first stress part in the first direction;

the powder barrel accommodating cavity is internally provided with a rear wall opposite to the powder barrel mounting opening, the first elastic resetting piece is mounted on the rear wall, and the free end of the first elastic resetting piece abuts against the resetting pressing part;

the first force bearing part drives the push rod assembly to act after being subjected to pressure applied by the door cover, and the first force application part drives the base to move downwards.

2. The laser printer according to claim 1, wherein:

the push rod assembly comprises a force application component and a push rod;

the force application component is provided with a first sliding groove and a second sliding groove, and the extending direction of the first sliding groove is intersected with the extending direction of the second sliding groove;

the base is provided with a first sliding protrusion, the push rod is provided with a second sliding protrusion, the first sliding protrusion is in sliding fit with the first sliding groove and can rotate relative to the first sliding groove, and the second sliding protrusion is in sliding fit with the second sliding groove and can rotate relative to the second sliding groove;

the reset pressing part and the first stress part are respectively arranged at two ends of the push rod in the length direction.

3. The laser printer according to claim 2, wherein:

the push rod and the base are respectively positioned on two opposite sides of the force application component in the length direction of the powder cylinder accommodating cavity.

4. The laser printer according to claim 2, wherein:

the push rod comprises a first rod section and a second rod section which are parallel and arranged in the vertical direction, the second rod section is located below the first rod section, the first stress part is located at the first end of the first rod section, the second end of the first rod section is connected with the second end of the second rod section, and the second sliding protrusion is located at the first end of the second rod section.

5. The laser printer according to claim 4, wherein:

the top of the first end of the second pole segment is provided with a support protrusion, which supports the first pole segment from below.

6. The laser printer according to any one of claims 2 to 5, wherein:

the powder barrel comprises a powder barrel accommodating cavity and a push rod, wherein the end wall of the first end of the powder barrel accommodating cavity in the length direction is provided with at least two sliding blocks, the sliding blocks are arranged along the first direction, a guide groove extending along the first direction is formed in the push rod, and the sliding blocks are in sliding fit with the guide groove.

7. The laser printer according to any one of claims 1 to 5, wherein:

a powder inlet is formed in the bottom wall of the powder cylinder accommodating cavity and is located at the first end of the powder cylinder accommodating cavity in the length direction.

8. The carbon powder cylinder is detachably arranged in the laser printer;

the toner cartridge includes:

the powder feeding device comprises a barrel main body, a powder storage cavity and a powder feeding channel are arranged in the barrel main body, the powder storage cavity and the powder feeding channel are communicated with each other, one end of the powder feeding channel is provided with a powder outlet, a sealing element is arranged in the powder outlet, the sealing element comprises a sealing part and a communication port which are arranged along the circumferential direction, the sealing element is rotatably arranged in the powder feeding channel, the communication port is communicated with the powder feeding channel, and the sealing part and the powder outlet are oppositely arranged along the radial direction of the sealing element and seal the powder outlet;

the stirring mechanism comprises a stirring frame, a screw rod and a driving gear set, the stirring frame is arranged in the powder storage cavity, the screw rod is arranged in the powder feeding channel, the driving gear set is arranged at the first end of the cylinder main body, and the driving gear set drives the stirring frame and the screw rod to rotate;

characterized in that, the carbon powder cylinder still includes:

a chip component fixedly mounted at a second end of the cartridge body;

a linkage mechanism mounted at the second end of the cartridge body, the linkage mechanism including a linkage assembly and a second elastic return member;

the two ends of the second elastic reset piece are respectively connected with the barrel main body and the connecting rod assembly, the connecting rod assembly is provided with a second stress part and a second force application part, the second force application part is hinged with the sealing piece, and the second stress part is stressed to only drive the sealing piece to rotate and open the powder outlet.