Abstract:
The invention provides a developer cartridge with a counting mechanism. The developer cartridge comprises a developer and the counting mechanism, wherein the counting mechanism is provided with protrusions which come in contact with a contact lever on an electronic photographing device so as to count the developer cartridge; and each protrusion has a first position and a second position in the direction perpendicular to a side wall of the developer cartridge, and is, in the first position, in contact with the contact lever, but is not, in the second position, in contact with the contact lever. The working principle of the developer cartridge adopting the counting mechanism is greatly different from the prior art. Therefore, the structure of the counting mechanism of the developer cartridge is simpler and more convenient and reliable; the production precision and the production cost are reduced; and the market competitiveness of the developer cartridge is improved.

Description:
FIELD OF THE INVENTION 
       [0001]    The invention relates to a developer cartridge with a counting mechanism. 
       BACKGROUND OF THE INVENTION 
       [0002]    The invention relates to a developer cartridge which can be detachably mounted on an electronic photographing device such as a laser printer, a duplicating machine and a facsimile machine, wherein a counting mechanism is arranged on the developer cartridge and can be used with a detector on the electronic photographing device to give instruction of whether the developer cartridge is a new developer cartridge to the electronic photographing device which can then restart calculating the service life of the developer cartridge. 
         [0003]    As illustrated in  FIGS. 1 ,  2  and  3 , the invention relates to a developer cartridge in the prior art, wherein the developer cartridge adopts a conventional counting mechanism. 
         [0004]    A toner hopper  55 , a developing component  31 , a toner feeding component (not shown), a stirring component (not shown) and a developer (not shown) are arranged on the developer cartridge  28 , wherein the developing component  31 , the toner feeding component and the stirring component are all fixed on the toner hopper  55 ; and the developer is stored in the toner hopper  55 . During the working process of the developer cartridge, firstly, the developer stored in the toner hopper  55  is stirred and conveyed by the stirring component to the toner feeding component; secondly, the received developer is conveyed to the developing component  31  by the toner feeding component; and finally, a developer layer is formed on the surface of the developing component  31  after the developing component  31  receives the developer from the toner feeding component. 
         [0005]    A side wall  58  is arranged on one side of the toner hopper  55 , and a developing component gear  69 , a toner feeding component gear  68 , an input gear  67 , an intermediate gear  70  and a stirring component driving gear  71  are all arranged and supported on the side wall  58 . During the working process of the developer cartridge, a power receiving part  73  on the input gear  67  receives power from the electronic photographing device and respectively transmits the power to the developing component gear  69 , the toner feeding component gear  68  and the intermediate gear  70  which are engaged with the input gear  67 ; the stirring component driving gear  71  is engaged with the intermediate gear  70  and receives the power from the intermediate gear  70 ; the developing component gear  69 , the toner feeding component gear  68  and the stirring component driving gear  71  are respectively arranged on shafts of the developing component  31 , the toner feeding component (not shown) and the stirring component (not shown); and the components are driven to rotate together with the gears which are arranged on the shafts of the components. Therefore, during the working process of the developer cartridge, the developing component  31 , the toner feeding component (not shown) and the stirring component (not shown) are driven to rotate in the developer cartridge after the input gear  67  receives the power from the electronic photographing device. 
         [0006]    An information detection mechanism  81  and an optical sensor  83  are arranged on the electronic photographing device, wherein the information detection mechanism  81  comprises a rotary shaft  84 , a contact lever  86  and a light blocking portion  87 ; a moving member  178  is arranged on the intermediate gear  70  of the developer cartridge  28  and can rotate around the rotary shaft  79 ; the moving member  178  and the rotary shaft  79  are arranged on the intermediate gear  70  and can rotate along with the intermediate gear  70 ; and the side wall  58  is also provided with a blocking protrusion  94  which is motionless relative to the side wall  58 . 
         [0007]    A counting mechanism in the prior art is composed of the moving member  178  and the blocking protrusion  94  on the developer cartridge  28 . 
         [0008]      FIG. 1  is a schematic diagram of the developer cartridge  28  on the initial state, in which the contact lever  86  on the information detection mechanism  81  is not in contact with any object (including the moving member  178 ); the information detection mechanism  81  does not rotate; the light blocking portion  87  is positioned inside the optical sensor  83  as a barrier; and the optical sensor  83  does not send out signals to the electronic photographing device. 
         [0009]    As illustrated in  FIG. 2 , the input gear  67  is engaged with the intermediate gear  70  and transmits the power to the intermediate gear  70  after the power receiving part  73  on the input gear  67  receives the power from the electronic photographing device, and the intermediate gear  70  is driven to rotate; and the moving member  178  is arranged on the intermediate gear  70 , so the moving member  178  rotates along with the intermediate gear  70 . As the moving member  178  is extended outwardly, the moving member  178  comes in contact with the contact lever  86  in the rotation process and the information detection mechanism  81  is driven to rotate around the rotary shaft  84 , herein the light blocking portion  87  after rotation is not positioned inside the optical sensor  83  as a barrier. The optical sensor  83  transmits information to the electronic photographing device after detecting light signals. After the developer cartridge  28  is verified as a new developer cartridge, the electronic photographing device restarts calculating the service life of the developer cartridge, and the counting function of the developer cartridge is realized. 
         [0010]    The intermediate gear  70  continues to rotate; the moving member  178  is separated from the contact lever  86 ; the information detection mechanism  81  is restored to the initial state as shown in  FIG. 1  under the action of a restoring force (an elastic restoring force, for example, a spring); the light blocking portion  87  is positioned inside the optical sensor  83  as a barrier; and the electronic photographing device does not receive the information from the optical sensor. As the side wall  58  is provided with the blocking protrusion  94 , the moving member  178  comes in contact with the blocking protrusion  94  when the intermediate gear  70  continues to rotate, thus the moving member  178  is driven to rotate around the rotary shaft  79  and is not extended outwardly again when the moving member  178  rotates to the contracted state as illustrated in  FIG. 3 . As the blocking protrusion  94  is designed into an intermediate supporting shaft  74  which is closer to the intermediate gear  70  than the contact lever  86 , the moving member  178  cannot come in contact with the contact lever  86  again when the intermediate gear  70  continues to rotate. Therefore, the optical sensor  83  does not detect the light signals again and the electronic photographing device does not count again as well. The developer cartridge is only counted once during the whole working process. 
         [0011]    The counting mechanism adopted in the prior art verifies the developer cartridge as a new developer cartridge by counting the developer cartridge once, and the moving member rotates around the rotary shaft. Therefore, for solving the problem of how to guarantee that the moving member does not rotate around the rotary shaft when in contact with the contact lever but the information detection mechanism is driven to rotate and that the moving member rotates around the rotary shaft when in contact with the blocking protrusion, higher matching precision requirement between the moving member and the rotary shaft is required to meet, thus the production process is difficult to control and the production cost of the developer cartridge is correspondingly increased. 
       SUMMARY OF THE INVENTION 
       [0012]    The invention provides a developer cartridge with a counting mechanism to solve the problems of difficult production, high precision, etc. in the prior art. 
         [0013]    In order to solve the technical problems, the invention adopts the technical proposal that: 
         [0014]    The invention relates to a developer cartridge with a counting mechanism, which comprises a cartridge body for accommodating a developer, the counting mechanism and a counting mechanism driving member, wherein the counting mechanism comprises protrusions which count the developer cartridge by moving from a first position in which the protrusions are in contact with a contact lever on an electronic photographing device to a second position in which the protrusions are not in contact with the contact lever on the electronic photographing device when driven by the counting mechanism driving member. Moreover, the protrusions are driven by the counting mechanism driving member to move in the direction perpendicular to a side wall of the cartridge body. 
         [0015]    The counting mechanism driving member comprises an input gear which receives power from the electronic photographing device and a gear which is engaged with the input gear, and drives the protrusions on the counting mechanism to be in rotation movement through power transmission between the input gear and the gear. 
         [0016]    A power component is arranged on the counting mechanism. 
         [0017]    The counting mechanism comprises a rotary member and a fixed member, wherein the fixed member is fixed on the side wall of the developer cartridge; the rotary member can rotate relative to the developer cartridge; a cylinder is also arranged on the rotary member and comprises a threaded portion and an unthreaded portion; the fixed member is provided with a screwed hole corresponding to the cylinder; and the rotary member is provided with the protrusions. 
         [0018]    Another aspect of the counting mechanism is that the counting mechanism comprises a rotary member and a fixed member, wherein the fixed member is fixed on the side wall of the developer cartridge; the rotary member can rotate relative to the developer cartridge; the rotary member is provided with a screwed hole and the protrusions; a cylinder corresponding to the screwed hole is arranged on the fixed member; and the cylinder comprises a threaded portion and an unthreaded portion. 
         [0019]    The rotary member comprises a first rotary member and a second rotary member, wherein the first rotary member is provided with a concave hole; and a protruded post is arranged on the second rotary member and is used with the concave hole to achieve synchronous rotation between the second rotary member and the first rotary member. 
         [0020]    Another aspect of the counting mechanism is that the counting mechanism comprises a rotary member and a fixed member, wherein the rotary member can rotate relative to the developer cartridge; a support pillar is arranged on the rotary member; the fixed member is provided with an opening corresponding to the support pillar; and the rotary member is provided with the protrusions. 
         [0021]    A thread pitch or a plurality of thread pitches are arranged on the threaded portion. 
         [0022]    A power component is arranged on the rotary member to provide power to the rotary member and to drive the rotary member to rotate. 
         [0023]    A hanging wall is arranged on the rotary member, and a gear is arranged on the outer circumference of the hanging wall and engaged with the input gear. 
         [0024]    The width of the hanging wall is small enough to make the rotary member stop rotating when the rotary member is in the second position. 
         [0025]    The width of the hanging wall is large enough to make the rotary member keep rotating when the rotary member is in the second position. 
         [0026]    The counting mechanism also comprises an elastic component which applies an elastic force, for driving the rotary member to move close to the fixed member, to the rotary member. 
         [0027]    The fixed member is fixed on the side wall of the developer cartridge. 
         [0028]    The fixed member can rotate a certain angle relative to the side wall of the developer cartridge. 
         [0029]    The protrusions are truncated cones or inverted truncated cones and come in contact with the contact lever when the rotary member moves close to or away from the side wall of the developer cartridge. 
         [0030]    Due to adoption of the technical proposal, the counting mechanism driving member drives the protrusions to move in the direction perpendicular to the side wall of the cartridge body, and the first position and the second position are positioned in different positions at different distance from the side wall of the cartridge body, thus the problems of, not only guaranteeing that the moving member does not rotate around the rotary shaft when in contact with the contact lever but also guaranteeing that the high matching precision requirement on driving the information detection mechanism to rotate is met, in the prior art do not occur. Therefore, the invention solves the problems of difficult production, high precision requirement, etc. in the prior art. The working principle of the technical proposal adopted by the invention is greatly different from that in the prior art. Therefore, the invention has the advantages of making the structure of the counting mechanism of the developer cartridge simpler and more convenient and reliable, reducing the production precision and production cost, and improving the market competitiveness of the developer cartridge. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0031]      FIG. 1  is a side elevation of a counting mechanism on a developer cartridge in the prior art when the counting mechanism is on the initial state; 
           [0032]      FIG. 2  is a side elevation of the counting mechanism on the developer cartridge in the prior art when the counting mechanism comes in contact with an information detection mechanism under the condition of rotation; 
           [0033]      FIG. 3  is a side elevation of the counting mechanism on the developer cartridge in the prior art when a moving member on the counting mechanism is on the contracted state after rotating around a rotary shaft; 
           [0034]      FIG. 4  is structure diagrams of a rotary member and a fixed member in the embodiment 1; 
           [0035]      FIG. 5  is a schematic diagram of a counting mechanism on the initial state in the embodiment 1; 
           [0036]      FIG. 6  is a schematic diagram of the counting mechanism on the final state in the embodiment 1; 
           [0037]      FIG. 7  is a schematic diagram of a counting mechanism on the initial state in the embodiment 2; 
           [0038]      FIG. 8  is a schematic diagram of the counting mechanism on the final state in the embodiment 2; 
           [0039]      FIGS. 9 and 10  are schematic diagrams of a counting mechanism on the initial state in the embodiment 3; 
           [0040]      FIGS. 11 and 12  are schematic diagrams of the counting mechanism on the final state in the embodiment 3; 
           [0041]      FIG. 13  is a a structure diagram of a counting mechanism in the embodiment 5; 
           [0042]      FIGS. 14 and 15  are respectively a schematic diagram of the counting mechanism on the initial state and a schematic diagram of the counting mechanism on the final state in the embodiment 5; 
           [0043]      FIG. 16  is a schematic diagram of a counting mechanism on the initial state in the embodiment 7; and 
           [0044]      FIG. 17  is a schematic diagram of the counting mechanism on the final state in the embodiment 7. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Embodiment 1 
       [0045]    Unless otherwise specified, the developer cartridge of the embodiment has the same structure with the developer cartridge shown in  FIG. 1 . 
         [0046]      FIG. 4  is a structure diagram of a counting mechanism in the embodiment 1. The counting mechanism comprises a rotary member  10  and a fixed member  20 , wherein the rotary member  10  is provided with a hanging wall  11 , protrusions  12  and a cylinder  13 ; the cylinder  13  comprises an unthreaded portion  13   a  and a threaded portion  13   b ; the fixed member  20  comprises a footwall  21  and a screwed hole  22  corresponding to the threaded portion  13   b , is fixed on the side wall  58  of the toner hopper  55  of the developer cartridge as shown in  FIG. 1 , and is motionless relative to the toner hopper  55 ; and a gear (not shown in the figure) is arranged on the outer circumference of the hanging wall  11  of the rotary member  10  and engaged with the input gear  67 , and receives power from the input gear  67  to drive the rotary member  10  to rotate around a central shaft of the hanging wall  11 . 
         [0047]    When the counting mechanism is on the initial state, the threaded portion  13   b  on the rotary member  10  is not engaged with or partially engaged with the screwed hole  22  of the fixed member  20 . As shown in  FIG. 5 , a certain distance is maintained between the hanging wall  11  of the rotary member  10  and the footwall  21  of the fixed member  20 ; the protrusions  12  of the rotary member  10  are extended outwardly in the direction perpendicular to the side wall  58 ; and the protrusions  12  are in a first position so as to come in contact with the contact lever  86  on the electronic photographing device when the threaded portion  13   b  and the screwed hole  22  are engaged with each other, thus the counting function of the developer cartridge  28  is realized. 
         [0048]    As the gear on the outer circumference of the hanging wall  11  of the rotary member  10  is engaged with the input gear  67 , the threaded portion  13   b  of the rotary member  10  is engaged with the screwed hole  22  of the fixed member  20  when the hanging wall  11  rotates (along the E direction as shown in  FIG. 5 ) after receiving power from the input gear  67 . Due to the thread engagement, a downward acting force F along the axial direction of the cylinder  13  is applied to the threaded portion  13   b  by the screwed hole  22 , and the rotary member  10  is driven to move downward (along the F direction as shown in  FIG. 5 ) to be close to the fixed member  20 . As the protrusions  12  are extended outwardly in the direction perpendicular to the side wall  58 , the protrusions  12  come in contact with the contact lever  86  when the threaded portion  13   b  is engaged with the screwed hole  22 , thus the counting function is realized. 
         [0049]    When the threaded portion  13   b  is not engaged with the screwed hole  22  again, the unthreaded portion  13   a  comes in contact with the screwed hole  22  (the outside diameter of the unthreaded portion  13   a  is less than that of the threaded portion  13   b  and less than the inside diameter of the screwed hole  22  as well), and the acting force in the F direction as shown in  FIG. 5  is not applied to the rotary member  10  by the screwed hole  22 , thus the rotary member  10  does not move downward again. When the rotary member  10  and the fixed member  20  are on the state as shown in  FIG. 6 , the space between the rotary member  10  and the fixed member  20  is small or the rotary member  10  and the fixed member  20  are adjacent to each other. Herein, the protrusions  12  on the rotary member  10  are in the second position in the direction perpendicular to the side wall  58 , so the protrusions  12  on the rotary member  10  cannot come in contact with the contact lever  86  again. 
         [0050]    In the embodiment, the width of the hanging wall  11  of the rotary member  10  is small, so when the rotary member  10  moves to the state as shown in  FIG. 6 , the hanging wall  11  of the rotary member  10  is not engaged with the input gear  67  again; the rotary member  10  does not rotate; the protrusions  12  are not in contact with the contact lever  86 ; and the counting function of the developer cartridge  28  does not work. 
         [0051]    In the embodiment, as a thread pitch is arranged on the threaded portion  13   b , the screwed hole  22  is engaged with the unthreaded portion  13   a  after the one-turn engagement with the threaded portion  13   b ; the protrusions  12  are only subjected to one rotation along with the rotary member  10 ; and each protrusion  12  only comes in contact with the contact lever  86  once before rotating from the first position to the second position. 
         [0052]    Another aspect of the embodiment is that two or more than two thread pitches are arranged on the threaded portion  13   b , thus the screwed hole  22  is engaged with the unthreaded portion  13   a  after the engagement with the threaded portion  13   b  for two turns or more than two turns; the protrusions  12  are subject to two rotations or more than two rotations along with the rotary member  10 ; and each protrusion  12  comes in contact with the contact lever  86  twice or more than twice before rotating from the first position to the second position. 
         [0053]    Another aspect of the embodiment is that the width H of the hanging wall  11  of the rotary member  10  or the width of the input gear  67  can be set to be large enough to drive the rotary member  10  to be always engaged with the input gear  67  during the downward movement. Moreover, when the rotary member  10  is on the state as shown in  FIG. 6 , the gear on the outer circumference of the hanging wall  11  is still engaged with the input gear  67  when the threaded portion  13   b  is not engaged with the screwed hole  22 , and the rotary member  10  still rotates, namely the rotary member  10  always rotates during the whole working process of the developer cartridge  28 . 
         [0054]    Another aspect of the embodiment is that a gear is not arranged on the rotary member  10  to be engaged with the input gear  67 , and a power component is arranged on the rotary member  10  to drive the rotary member  10  to rotate. For example, a torsion spring is arranged on the rotary member  10  to provide power to the rotary member  10 . 
         [0055]    In the embodiment, the elastic component  30  in contact with the rotary member  10  is also adopted, wherein a downward acting force along the direction as shown in  FIG. 5  is applied to the rotary member  10  by the elastic component to help the threaded portion  13   b  of the rotary member  10  be in better engagement with the screwed hole  22  of the fixed member  20 . 
       Embodiment 2 
       [0056]    The  FIGS. 7 and 8  illustrate the embodiment 2. Unless otherwise specified, the developer cartridge of the embodiment has the same structure with the developer cartridge of the embodiment 1. 
         [0057]    The counting mechanism of the embodiment comprises a rotary member  10   a  and a fixed member  20   a , wherein the rotary member  10   a  is provided with a hanging wall  14 , protrusions  15  and a screwed hole  16 ; a footwall  23  and a cylinder  24  are arranged on the fixed member  20   a ; the cylinder  24  comprises a threaded portion  24   a  and an unthreaded portion  24   b ; a gear is arranged on the outer circumference of the hanging wall  14  of the rotary member  10   a  and engaged with the input gear  67 ; and the fixed member  20   a  is arranged on the side wall  58  of the toner hopper  55  and is motionless relative to the toner hopper  55 . 
         [0058]      FIG. 7  is a schematic diagram of the counting mechanism of the embodiment on the initial state. Herein the protrusions  15  on the rotary member  10   a  are extended out of the side wall  58  and can come in contact with the contact lever  86  on the electronic photographing device when the threaded portion  24   a  is engaged with the screwed hole  16 , thereby the counting function of the developer cartridge is realized. 
         [0059]      FIG. 8  is a schematic diagram of the counting mechanism of the embodiment on the final state. Herein the threaded portion  24   a  is not engaged with the screwed hole  16  which rotates around the unthreaded portion  24   b , and the protrusions  15  are not extended out of the side wall  58  and are not in contact with the contact lever on the electronic photographing device, thereby the counting function of the developer cartridge does not work. 
         [0060]    It is obvious to those having ordinary skill in the art that the working process and working principle of the counting mechanism of the embodiment are the same with those of the embodiment 1; and no further detailed description is given herein. 
       Embodiment 3 
       [0061]    Unless otherwise specified, the developer cartridge of the embodiment has the same structure with the developer cartridge shown in  FIG. 1 . 
         [0062]    As illustrated in  FIG. 9 , the counting mechanism of the embodiment comprises a rotary member  10   b  and a fixed member  20   b , wherein the rotary member  10   b  comprises a hanging wall  17 , protrusions  18  and a support pillar  19 ; the fixed member  20   b  comprises a footwall  25  and an opening  26 , is fixed on the side wall  58  of the toner hopper  55 , and is motionless relative to the developer cartridge  28 ; a gear is arranged on the outer circumference of the hanging wall  17  of the rotary member  10   b  and engaged with the input gear  67  of the developer cartridge; and the rotary member  10   b  can rotate clockwise around the center of the hanging wall  17  (along the G direction as shown in  FIG. 9 ). 
         [0063]      FIGS. 9 and 10  are schematic diagrams of the counting mechanism of the embodiment on the initial state. When the counting mechanism is on the state, the protrusions  18  on the rotary member  10   b  are in the first position in the direction perpendicular to the side wall  58 . As the protrusions  18  on the rotary member  10   b  are extended outwardly in the direction perpendicular to the side wall  58 , the protrusions  18  come in contact with the contact lever  86  on the electronic photographing device in the rotation process, thus the counting function of the developer cartridge is realized. 
         [0064]    When the counting mechanism is on the initial state, a certain angle is formed between the support pillar  19  on the rotary member  10   b  and the opening  26  on the fixed member  20   b  in a staggered manner, and a certain distance is maintained between the hanging wall  17  of the rotary member  10   b  and the footwall  25  of the fixed member  20   b , as shown in  FIG. 10 . Therefore, guarantee can be made that the protrusions  18  on the rotary member  10   b  come in contact with the contact lever  86  in the rotation process of the rotary member  10   b.    
         [0065]    When the rotary member  10   b  rotates a certain angle (less than or equal to 360 DEG) along the rotation direction as shown in  FIGS. 9 and 10 , the rotary member  10   b  is on the final state as shown in  FIGS. 11 and 12 . When the rotary member  10   b  is on the state, the support pillar  19  on the rotary member  10   b  is over against the opening  26  on the fixed member  20   b . Because the support pillar  19  is smaller than the opening  26 , the rotary member  10   b  moves closer to the fixed member  20   b  (in the H direction as shown in  FIG. 11 ) under the action of an elastic force applied by the elastic component  30   b ; the protrusions  18  on the rotary member  10   b  move closer to the side wall  58 ; the hanging wall  17  of the rotary member  10   b  and the footwall  25  of the fixed member  20   b  are adjacent to each other; and the protrusions  18  are in the second position in the direction perpendicular to the side wall  58  and cannot come in contact with the contact lever  86  on the electronic photographing device again, thus the counting function of the developer cartridge does not work. 
         [0066]    In the embodiment, the width of the gear on the outer circumference of the hanging wall  17  of the rotary member  10   b  is very small, so the gear on the outer circumference of the hanging wall  17  is not engaged with the input gear  67  again after the rotary member  10   b  is close to the fixed member  20   b  (on the state as shown in  FIGS. 11 and 12 ), thus the rotary member  10   b  does not rotate again. 
         [0000]    Another aspect of the embodiment is that the width of the gear on the outer circumference of the hanging wall  17  can be set to be large enough so that the gear on the outer circumference of the hanging wall  17  can still be engaged with the input gear  67  after the rotary member is on the state shown in  FIGS. 11 and 12 . The rotary member  10   b  still rotates on the state shown in  FIGS. 11 and 12 . 
         [0067]    Another aspect of the embodiment is that a gear is not arranged on the rotary member  10   b  to be engaged with the input gear  67 , and a power component is arranged on the rotary member  10   b  to provide power to the rotary member  10   b  and to drive the rotary member  10   b  to rotate. For example, a torsion spring is arranged on the rotary member  10   b  to provide power to the rotary member  10   b.    
         [0068]    Another aspect of the embodiment is that the fixed member  10   b  is arranged on the side wall  58  of the developer cartridge and can rotate a certain angle (such as 60 DEG, 90 DEG, etc.) relative to the side wall  58 , and the support pillar  19  is over against the opening  26  after driven to rotate a larger angle (more than 360 DEG). 
       Embodiment 4 
       [0069]    Unless otherwise specified, the developer cartridge of the embodiment has the same structure with the developer cartridge of the embodiment 3. 
         [0070]    In the embodiment, the rotary member  10   b  is fixed on the side wall  58  of the toner hopper  55  and is motionless relative to the side wall  58 ; the fixed member  20   b  can rotate relative to the developer cartridge  28 ; the fixed member  20   b  is provided with the protrusions  18  which rotate along with the fixed member  20   b ; the hanging wall  17  and the support pillar  19  are arranged on the rotary member  10   b ; the fixed member  20   b  is also provided with the footwall  25  and the opening  26 ; a gear is arranged on the outer circumference of the footwall  25  of the fixed member  20   b  and engaged with the input gear  67 ; and the protrusions  18  come in contact with the contact lever  86  in the rotation process, thus the counting function of the developer cartridge is realized. 
       Embodiment 5 
       [0071]    Unless otherwise specified, the developer cartridge of the embodiment has the same structure with the developer cartridge of the embodiment 1. 
         [0072]      FIGS. 13 ,  14  and  15  illustrate the embodiment 5, wherein a protrusion  12   a  on the counting mechanism of the embodiment has the structure of an inverted truncated cone. When the rotary member  10  is in downward rotation movement, an inclined plane  12   b  of the protrusion  12   a  comes in contact with the contact lever  86  on the electronic photographing device, thus the counting function of the developer cartridge is realized; and when the inclined plane  12   b  is separated from the contact lever  86 , the information detection mechanism  81  on the electronic photographing device is not positioned inside the optical sensor as a barrier again, thus the counting function of the electronic photographing device does not work. 
         [0073]    Another aspect of the embodiment is that: the protrusion  12   a  has a structure of a truncated cone, and an inclined plane on the protrusion  12   a  comes in contact with the contact lever  86  during the upward rotation movement, thus the counting function of the developer cartridge is realized. 
       Embodiment 6 
       [0074]    Unless otherwise specified, the developer cartridge of the embodiment has the same structure with the developer cartridge of the embodiment 3. 
         [0000]    The protrusions of the embodiment have the same structure with those of the embodiment 5. 
       Embodiment 7 
       [0075]    Unless otherwise specified, the developer cartridge of the embodiment has the same structure with the developer cartridge of the embodiment 2. 
         [0076]    As illustrated in  FIG. 16 , the hanging wall  23  and the cylinder  24  are arranged on the fixed member  20   a  which is fixed on the side wall  58  of the toner hopper  55 ; a first rotary member  14   c  and a second rotary member  14   d  are arranged on the rotary member  10   a ; the first rotary member  14   c  is provided with a concave hole  14   b ; a protruded post  14   a  is arranged on the second rotary member  14   d  and used with the concave hole  14   b ; the first rotary member  14   c  is arranged on an unthreaded portion  24   b  on the cylinder  24 ; the second rotary member  14   d  is also provided with the screwed hole  16  and the protrusions  15 ; and the screwed hole  16  is engaged with a threaded portion  24   a  on the cylinder  24 . 
         [0077]    During the working process of the developer cartridge, a gear is arranged on the outer circumference of the first rotary member  14   c  and can receive power from the input gear  67  and keep rotating. In the rotation process of the first rotary member  14   c , as the protruded post  14   a  is used with the concave hole  14   b , the second rotary member  14   d  and the first rotary member  14   c  are driven to be in synchronous rotation; the second rotary member  14   d  is engaged with the threaded portion  24   a  through the screwed hole  16  and moves close to the first rotary member  14   c , i.e. from the state as shown in  FIG. 16  to the state as shown in  FIG. 17 . 
         [0078]    The first rotary member  14   c  of the embodiment is a hanging wall. 
         [0079]    It is obvious to those having ordinary skill in the art that the counting function of the developer cartridge can also be realized when the protrusions on the counting mechanism come in contact with the contact lever of the information detection mechanism when the rotary member moves away from the fixed member.