CN103713496A - Cartridge - Google Patents

Abstract

The present invention discloses a toner cartridge detachably installed in an image forming apparatus, the toner cartridge includes: a cartridge body configured to accommodate a developer in the cartridge body, and the cartridge body The box body includes a first side wall and a second side wall opposite to the first side wall left and right; a developing roller, which is rotatably supported by the first side wall and the second side wall of the box body; a detection unit , the detection unit is arranged on the first side wall of the box body; the detection unit includes a detection gear, a detection protrusion installed on the detection gear and a detection protrusion arranged between the detection gear and the detection protrusion The elastic element between them, the detection protrusion elastically expands and contracts relative to the detection gear in a direction parallel to the axial direction of the developing roller. Since the detection protrusion of the toner cartridge can protrude outward and retract inward relative to the side wall of the toner cartridge, the smooth transmission between the detection gear and the transmission gear is not affected, thereby ensuring the printing quality of the toner cartridge.

Description

a toner cartridge

technical field

The invention relates to a toner cartridge detachably installed in an image forming device.

Background technique

The prior art discloses a toner cartridge, which is detachably installed in an image forming device, wherein the toner cartridge includes a developing roller and a photosensitive element, and the developing roller contacts the photosensitive element and transfers the toner to the photosensitive element surface, so a toner image is formed on the surface of the photosensitive element.

In a conventional laser printer, the toner cartridge is detachably installed therein. This type of printer is provided with a detection device for detecting whether the toner cartridge installed in the laser printer is a new product.

For example, U.S. Patent US20110243578 discloses a toner cartridge, wherein the side wall of the toner cartridge is provided with a slope surface supporting the detection gear. When the detection gear receives the driving force and rotates, it can move along the slope surface so that In the direction relative to the side wall of the toner cartridge, it protrudes outward or retracts inward. During the process of the detection gear protruding outward, the detection protrusion arranged on the detection gear moves the detection arm in the image forming device and generates An ON-OFF signal, according to this signal, the CPU of the image forming device can judge that the toner cartridge is unused. Since the toner cartridge detection gear disclosed in the above patents expands and contracts axially along the slope surface supporting the detection gear while receiving the driving force and rotates, the meshing between the detection gear and the transmission gear is not smooth, which in turn affects the printing of the toner cartridge quality.

Contents of the invention

The present invention provides a toner cartridge to solve the problem that in the printing process of the prior art toner cartridge, due to the axial expansion and contraction of the detection gear during the rotation process, the meshing between the detection gear and the transmission gear is not stable and the toner Poor print quality technical defect of the box.

In order to solve the above technical problems, the technical scheme that the present invention takes is:

A toner cartridge detachably installed in an image forming apparatus, the toner cartridge comprising:

a case body configured to accommodate a developer therein, and the case body includes a first side wall and a second side wall left and right opposite to the first side wall; a developing roller, The developing roller is rotatably supported by the first side wall and the second side wall of the box body; the detection unit is arranged on the first side wall of the box body; the detection unit includes a detection gear, installed A detection protrusion on the detection gear and an elastic element arranged between the detection gear and the detection protrusion, the detection protrusion is elastic relative to the detection gear in a direction parallel to the axial direction of the developing roller retractable. The detection protrusion is provided with a guide post, the detection gear is provided with a guide hole for accommodating the guide post, and the elastic element is installed in the guide hole of the detection gear and sleeved on the detection protrusion on the guide column.

The detection protrusion is provided with a guide surface.

The guide surface is an arc surface.

The toner cartridge also includes a limiting component that limits the axial movement of the detection protrusion guide post.

The restricting part is a snap spring.

The elastic element is a compression spring.

After adopting the above technical solution, since the detection protrusion of the toner cartridge can protrude outward or retract inward relative to the detection gear in the direction parallel to the axial direction of the developing roller, the smooth meshing between the detection gear and the transmission gear will not be affected. Transmission, when the toner cartridge is loaded into the image forming device, the detection protrusion of the toner cartridge will protrude under the action of the spring and enter the concave part of the image forming device to accommodate the detection arm, and the detection protrusion will rotate with the detection gear. During the process, the detection arm will be toggled, so as to achieve the purpose of the image forming device detecting whether the toner cartridge loaded therein is unused. This solution has a simple process and solves the problem of detection caused by the expansion and contraction of the toner cartridge detection gear in the prior art. The poor print quality of the toner cartridge is caused by the uneven meshing between the gears and the drive gear Technical issues.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a structural view of an image forming apparatus of the present invention;

Fig. 2 is a structural view of the detection gear and the detection arm of the toner cartridge of the present invention;

Fig. 3 is an exploded view of the detection gear and the detection protrusion of the present invention;

Fig. 4 is the first matching view of the detection gear and the detection protrusion of the present invention;

Fig. 5 is the second matching view of the detection gear and the detection protrusion of the present invention;

Fig. 6 is a structural view of removing the protective cover of the toner cartridge of the present invention;

Fig. 7 is the first structural view of the cooperation between the toner cartridge and the image forming device of the present invention;

Fig. 8 is a second structural view of the cooperation between the toner cartridge and the image forming device of the present invention;

9 is a third structural view of the cooperation between the toner cartridge and the image forming device of the present invention;

Fig. 10 is a fourth structural view of the cooperation between the toner cartridge and the image forming device of the present invention;

Fig. 11 is the first structural view of the cooperation between the transmission gear of the toner cartridge and the detection gear of the present invention;

Fig. 12 is a second structural view of the cooperation between the transmission gear of the toner cartridge and the detection gear of the present invention;

Fig. 13 is a third structural view of the cooperation between the transmission gear of the toner cartridge and the detection gear of the present invention;

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

As shown in Fig. 1, Fig. 2, Fig. 9 and Fig. 10, the image forming device 20 includes a first side wall 22 and a second side wall 23 opposite to each other, wherein the first side wall 22 includes an inner wall 22a and a seat for accommodating the detection arm 21. Recess 22b.

As shown in Figures 2 and 6, the toner cartridge 1 includes left and right opposite first side walls 13A and second side walls (not shown in the figure) and a developing roller 3 rotatably supported between the two side walls, developing The end of the roller 3 is sleeved with an electrode 4 made of conductive material, wherein the powder bin 12 stores carbon powder, the gear train is installed on the first side wall 13A of the carbon powder cartridge, and the input gear 2a arranged on the drive head 2, The developing roller gear 14, the powder feeding roller gear 15, the first idler gear 9, the stirring frame gear 10, the second idler gear 11 and the detection gear 5 are composed of a toothless part 5a, a toothed part 5b and a guide Hole 5c, wherein the input gear 2a meshes with the developing roller gear 14, the powder feeding roller gear 15 and the first idler gear 9 at the same time, the first idler gear 9 and the second idler gear 11 are double gears with a large diameter outside and a small inside, The external gear 9a of the first idler gear 9 meshes with the input gear 2a, its internal gear 9b meshes with the stirring frame gear 10, the internal gear 11b of the second idler gear 11 meshes with the stirring frame gear 10, and its external gear 11a meshes with the detection gear 5 As shown in Figures 3 to 5, the toner cartridge 1 also includes a spring 7 and a snap ring 8 that cooperate with the detection protrusion 6, wherein the detection protrusion 6 includes a guide post 6a and an arc-shaped guide surface 6c, The guide post 6a is provided with a circular notch 6d and a stepped platform 6b, the guide post 6a of the detection protrusion 6 cooperates with the guide hole 5c of the detection gear 5, the spring 7 is installed in the guide hole 5c of the detection gear 5 and is sleeved in the detection On the guide column 6a of the protrusion 6, one end of the spring 7 abuts against the stepped platform 6b of the detection protrusion 6, and the jumper 8 is stuck in the circular gap 6d of the detection protrusion 6 to prevent the detection protrusion 6 from moving from the detection gear 5. It falls off in the guide hole 5c.

When the toner cartridge 1 is loaded into the image forming device 20 along the F direction, at the initial stage, as shown in FIGS. At this time, since the guide surface 6c of the detection protrusion 6 is in interference contact with the inner wall 22a of the image forming device 20, the inner wall 22a of the image forming device 20 pushes the detection protrusion 6 relative to the detection gear in a direction parallel to the axial direction of the developing roller 3. 5 retracts inward in the R direction, and at this time the spring 7 is in a compressed state.

When the toner cartridge 1 is fully loaded into the image forming device 20 (as shown in FIG. 9 ), the detection protrusion 6 is outward in the L direction relative to the detection gear 5 in a direction parallel to the axial direction of the developing roller 3 under the action of the spring 7. protruding, the detection protrusion 6 enters the concave portion 22b of the image forming device 20 accommodating the detection arm 21, and the detection protrusion 6 rotates from the initial position as shown in FIG. 9 to the final position as shown in FIG. 10 along the C direction. During the process, the detection arm 21 of the image forming device 20 will be touched. When the image forming device 20 is started, the driving head 2 of the toner cartridge 1 receives the driving force of the image forming device 20 and transmits the driving force to the detection gear 5, because the detection gear 5 includes a toothless part 5a and a toothed part 5b. Therefore, as shown in FIG. Move to the position shown in Figure 12, the detection protrusion 6 touches the detection arm 21 of the image forming device 20 and generates an ON-OFF signal, so that the CPU of the image forming device 20 can judge according to the received ON-OFF signal This toner cartridge 1 is a new toner cartridge. When the second idler gear 11 drives the detection gear 5 to continue to rotate to the position shown in FIG. The power transmission is stopped, and the detection protrusion 6 stops at the position shown in FIG. 13 .

When the toner cartridge 1 is removed from the image forming device 20 along the direction D (as shown in FIG. 10 ), the guide surface 6c of the detection protrusion 6 of the toner cartridge 1 will interfere with the image during the removal process. The inner wall 22a of the forming device 20, so the inner wall 22a of the image forming device 20 pushes the detection protrusion 6 and compresses the spring 7 to retract inwardly relative to the detection gear 5 in the axial direction parallel to the developing roller 3, and the toner cartridge 1 can be easily removed from the image forming device 20.

Since the toner cartridge 1 is loaded into the image forming device 20 or removed from the image forming device 20, the detection protrusion 6 will retract inwardly relative to the detection gear 5, thereby facilitating the loading and removal of the toner cartridge 1 , when the toner cartridge 1 is fully loaded into the image forming device 20, the detection protrusion 6 will protrude outward relative to the detection gear 5 and enter the recess 22b of the image forming device 20 to accommodate the detection arm 21, so the detection protrusion 6 is the same as the detection gear 5 During the counterclockwise rotation, the detection arm 21 will be touched, so that the CPU of the image forming device 20 receives an ON/OFF signal to determine that the toner cartridge 1 is unused. Since the detection gear 5 does not protrude outward or retract inward relative to the first side wall 13A of the toner cartridge 1, it does not affect the smooth meshing transmission between the detection gear 5 and the second idler gear 11, ensuring that the carbon The print quality of cartridge 1.

Finally, it should be noted that: the above embodiments only illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still understand the foregoing The technical solutions recorded in each embodiment are modified, or some of the technical features are replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (7)

1. A toner cartridge detachably installed in an image forming device, the toner cartridge comprising: a box body configured to accommodate a developer in the box body, and the box body includes a first side wall and a second side wall left and right opposite to the first side wall; a developing roller, the developing roller is rotatably supported by the first side wall and the second side wall of the box body; a detection unit, the detection unit is arranged on the first side wall of the box; It is characterized in that the detection unit includes a detection gear, a detection protrusion installed on the detection gear and an elastic element arranged between the detection gear and the detection protrusion, and the detection protrusion is parallel to the The developing roller elastically expands and contracts relative to the detection gear in the axial direction. 2. The toner cartridge according to claim 1, wherein a guide post is provided on the detection protrusion, a guide hole for accommodating the guide post is provided on the detection gear, and the elastic element is installed on The detection gear is in the guide hole and is sleeved on the guide post of the detection protrusion. 3. The toner cartridge according to claim 1 or 2, wherein a guide surface is provided on the detection protrusion. 4. The toner cartridge according to claim 3, wherein the guide surface is an arc-shaped surface. 5. The toner cartridge according to claim 3, characterized in that, the toner cartridge further comprises a restricting component that restricts the axial movement of the detection protrusion guide post. 6. The toner cartridge according to claim 5, wherein the restricting member is a snap spring. 7. The toner cartridge according to claim 1 or 2, wherein the elastic element is a compression spring.

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