CN113721438A

CN113721438A - Developing cartridge and process cartridge

Info

Publication number: CN113721438A
Application number: CN202111080465.9A
Authority: CN
Inventors: 王朋; 林东明
Original assignee: E Jet Technology Co ltd
Current assignee: E Jet Technology Co ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2021-11-30
Anticipated expiration: 2041-09-15
Also published as: CN113721438B

Abstract

The present invention relates to a developing cartridge detachably mountable in an apparatus, including a housing, a developing roller rotatably mounted in the housing, a chip, and a driving force receiver at an end of the housing; the chip comprises an electric contact and a storage part which are connected with each other through points, and the electric contact is used for establishing communication connection with equipment; the developing cartridge further includes a chip communication member, at least a portion of which is movable as a movable member between a first position and a second position with respect to the casing; in the first position, the movable part enables the electric contact and the equipment to be disconnected from each other and cannot establish communication connection between the electric contact and the equipment, and in the second position, the movable part enables the electric contact and the equipment to be electrically connected and establishes communication connection between the electric contact and the equipment.

Description

Developing cartridge and process cartridge

Technical Field

The present invention relates to the field of electrophotographic image forming, and more particularly, to a developing cartridge detachably mountable in an electrophotographic image forming apparatus.

Background

There is a process cartridge including a developing cartridge and a drum frame, the developing cartridge being mounted to the drum frame before use, and then the combination of the developing cartridge and the drum frame, which contains toner required for development and developing components such as a developing roller, a toner discharging blade, etc., being mounted to an electrophotographic image forming apparatus (hereinafter referred to as "apparatus"), the drum frame being provided therein with a photosensitive drum, a charging member, etc., the photosensitive drum surface forming an electrostatic latent image when the process cartridge is operated in the apparatus, and the developing roller for supplying the toner to the photosensitive drum while developing the electrostatic latent image.

Generally, the service life of the photosensitive drum is designed to be far longer than that of a developing box, namely, after carbon powder in the developing box is consumed, an end user only needs to replace the developing box, and the drum frame is kept for continuous use, so that the use cost is reduced. In practice, need establish communication connection between development box and the equipment, the in service behavior of development box is mastered at any time to the equipment of being convenient for, for this reason, installs the chip in the development box, and the drum frame is provided with the mouth that exposes that is convenient for the chip to expose, and when development box was installed to the drum frame, the chip was exposed through exposing the mouth.

The existing chip is fixedly installed at the bottom of the developing box, the chip can be rubbed and bumped with the drum frame in the process that the developing box is installed towards the drum frame, after the chip is rubbed and bumped, the chip is easy to cause the conductivity of the chip to be lost or increase the risk of short circuit, and more seriously, the chip can fall off from the developing box, so that the developing box and equipment cannot be connected in a communication mode.

Disclosure of Invention

In view of this, the present invention provides a developing cartridge in which a member for mounting a chip is provided movably, and at least a contact for electrical contact with a device in the chip does not rub against a drum rack before the developing cartridge is mounted to the drum rack, thereby improving the working stability of the chip.

The specific scheme is as follows:

a developing cartridge detachably mountable in the apparatus, the developing cartridge including a housing, a chip, and a driving force receiver at an end of the housing; the driving force receiving member is used for receiving driving force from the equipment to drive the component in the developing roller to rotate; the chip comprises an electric contact and a storage part which are electrically connected with each other, the storage part stores parameter information of the developing box, and the electric contact is used for establishing communication connection with equipment; the developing cartridge further includes a chip communication member, at least a portion of which is movable as a movable member between a first position and a second position with respect to the casing; in the first position, the moveable member electrically disconnects the electrical contact from the device without establishing a communicative connection therebetween, and in the second position, the moveable member electrically disconnects the electrical contact from the device without establishing a communicative connection therebetween.

Preferably, a center line passes through a midpoint in a front-rear direction of the developing cartridge and is parallel to the up-down direction, the developing roller is located in front of the housing, the driving force receiving member and the electrical contact are respectively located at both sides of the center line, and the electrical contact is closer to a rear of the developing cartridge than the driving force receiving member; further, the developing cartridge further includes an agitating member in the casing, the agitating member being moved by receiving the driving force of the driving force receiving member, and the electrical contact is located rearward of the rotational axis of the agitating member in the front-rear direction.

The developing cartridge further includes a counting assembly at an end of the casing, the counting assembly receiving the driving force of the driving force receiving member to interact with a detecting part in the apparatus.

As a first embodiment, the movable piece is mounted rotatably about a rotation axis that is parallel to the rotation axis of the driving force receiving member; in the first position, the movable member and the electrical contact are separated from each other to break the electrical connection, and in the second position, the movable member and the electrical contact are in contact with each other to achieve the electrical connection.

Specifically, the chip communication assembly comprises a substrate and a conductor arranged on the substrate, wherein the conductor can rotate along with the rotation of the substrate; the conductor is provided with a first contact part and a second contact part which are electrically connected, the substrate is provided with a first mounting part and a second mounting part which are mutually connected, the first mounting part is used for bearing the first contact part, the second mounting part is used for bearing the second contact part, the first contact part is exposed through the first mounting part to form electrical connection with the electrical contact, and the second contact part is used for forming electrical connection with equipment; the developing cartridge further includes an urging member combined with the substrate or the conductor for urging the second contact portion away from the electrical contact.

Optionally, the mass of the first mounting portion is less than the mass of the second mounting portion.

As a second embodiment, the chip communicating member further includes a movable lever coupled to the movable member, the movable lever being movable in an up-down direction of the developing cartridge, the movable member being movable between a first position and a second position along with the movable lever;

as a third embodiment, the movable member is slidable on a plane intersecting the up-down direction.

As a fourth embodiment, the developing cartridge further includes a driving end cap disposed on the same side as the driving force receiving member, the driving force receiving member being exposed through the driving end cap; the chip communicating component also comprises a fixed part fixedly arranged on the shell or the driving end cover, the moving part is electrically connected with the fixed part at the first position, but the moving part is separated from the electric contact to break the electric connection, and the moving part is simultaneously contacted with the fixed part and the electric contact to realize the electric connection at the second position; or in the first position, the movable part is disconnected from the fixed part, meanwhile, the movable part and the electric contact are separated from each other to be disconnected from the electric connection, and in the second position, the movable part is simultaneously contacted with the fixed part and the electric contact to realize the electric connection.

As a fifth embodiment, the chip connection assembly further comprises a fixed part immovable with respect to the housing, the fixed part having a conductor disposed therein and having a first contact portion and a second contact portion electrically connected, the first contact portion being for electrical connection with the device and the second contact portion being for electrical connection with the electrical contact; at least an electrical contact is mounted in the moving member; when the movable piece is positioned at the first position, the electric contact and the second contact part are separated from each other to be disconnected; the electrical contact moves from the first position to the second position with the movable member during the process in which the developing cartridge is mounted; when the developing cartridge is mounted to the predetermined position, the movable member reaches the second position, and the electrical contact comes into contact with the second contact portion to achieve electrical connection.

The chip communication assembly further comprises a reset piece abutted against the movable piece, and the reset piece is used for forcing the movable piece to have a trend of moving towards the first position.

The present invention also provides a process cartridge including a drum frame and the developing cartridge as described above, the developing cartridge being detachably mounted in the drum frame.

The drum frame has a bottom plate and an opening provided on the bottom plate, and when the developing cartridge is mounted toward the drum frame, the movable member is abutted by the drum frame to move from the first position to the second position, and the electrical contact is exposed through the opening.

As described above, the electrical contact of the chip is communicatively connected to the device via the movable member, and the movable member is movable between a first position where the movable member is separated from the electrical contact to be electrically disconnected and a second position where the movable member is in contact with the electrical contact to be electrically connected, that is, the electrical contact of the chip does not have to be directly electrically connected to the device.

Drawings

Fig. 1 is a perspective view of a process cartridge according to an embodiment of the present invention after separation of a developing cartridge and a drum rack.

Fig. 2 is a perspective view of a developing cartridge according to an embodiment of the present invention.

Fig. 3 is an exploded view of a chip connection assembly in the developing cartridge according to an embodiment of the present invention.

Fig. 4 is a side view of the developing cartridge according to the first embodiment of the present invention, as viewed from the bottom up in the up-down direction after hiding the chip mount component.

Fig. 5 is a side view of the position of the chip mounting assembly in the developing cartridge viewed from left to right in the left-right direction before the developing cartridge according to the first embodiment of the present invention is mounted to the drum rack.

Fig. 6 is a comparison view of the state of the conductive sheet before and after the developing cartridge is mounted in the chip connection assembly according to the first embodiment of the present invention.

Fig. 7 is a side view of the position of the chip mounting assembly in the developing cartridge viewed from left to right in the left-right direction before the developing cartridge according to the second embodiment of the present invention is mounted to the drum rack.

Fig. 8 is a perspective view of the developing cartridge according to the fifth embodiment of the present invention as viewed from the driving end.

Fig. 9 is an exploded view of a chip connection component in the developing cartridge according to the fifth embodiment of the present invention.

Fig. 10 is a perspective view of the inside of the drive end cover according to the fifth embodiment of the present invention.

Fig. 11 is a side view of the developing cartridge according to the fifth embodiment of the present invention, viewed from left to right in the left-right direction after the driving end cap is hidden.

Fig. 12 is a schematic view showing relative positions of the conductor and the movable member when the movable member is located at the first position in the developing cartridge according to the fifth embodiment of the present invention.

Detailed Description

Example one

Fig. 1 is a perspective view of a process cartridge according to an embodiment of the present invention after separation of a developing cartridge and a drum frame; fig. 2 is a perspective view of a developing cartridge according to an embodiment of the present invention.

The developing cartridge 100 may be directly detachably mounted to the apparatus, or as described in the background art, the developing cartridge 100 is first mounted to the drum rack 200, and then both are detachably mounted to the apparatus. For convenience of description, the developing cartridge 100 has a left-right direction parallel to the length direction/longitudinal direction, a front-back direction parallel to the width direction/lateral direction, and an up-down direction parallel to the height direction/vertical direction, with the developing cartridge 100 being mounted forward and removed backward in the front-back direction, with respect to a state when the developing cartridge 100 is mounted to the drum stand 200 or the apparatus.

When the developing cartridge 100/process cartridge is operated, the developing cartridge 100 needs to receive driving force and power from the apparatus through the left and right ends, as shown in the figure, the installation direction of the developing cartridge 100 is the front 103, the removal direction is the rear 104, the side receiving the driving force is the driving end 101, the side receiving the power is the conductive end 102, the driving end 101 is located at the left side of the developing cartridge 100, and the conductive end 102 is located at the right side of the developing cartridge 100.

As shown in fig. 1 and 2, the developing cartridge 100 includes a casing 1 accommodating toner, a developing roller 2 rotatably mounted in the casing 1, a driving force receiving member 15 located at a longitudinal end of the casing 1, the developing roller 2 being located at a front of the casing 1, and a counting assembly 6, the driving force receiving member 15 receiving a driving force from the apparatus to drive the developing roller 2 and the counting assembly 6 to operate, wherein the driving force receiving member 15 rotates about a rotation axis L, the developing roller 2 rotates about a rotation axis L5 for supplying the toner outward, and the counting assembly 6 is adapted to interact with a detecting member in the apparatus so that the developing cartridge 100 can be recognized by the apparatus.

Further, the developing cartridge 100 further includes a handle 13 at the rear of the casing, a conductive member 14 at a conductive end 102, and a driving cap 11 and a conductive cap 12 at both longitudinal ends of the casing 1, respectively, the driving force receiver 15 being exposed through the driving cap 11, a portion of the counter assembly 6 being exposed from the driving cap 11 when the counter assembly 6 is disposed on the same side as the driving force receiver 15, and a portion of the counter assembly 6 being exposed from the conductive cap 12 when the counter assembly 6 is disposed on a different side from the driving force receiver 15; the conductive member 14 is for receiving power from the apparatus to supply to the developing roller.

The drum stand 200 includes a frame body 201 enclosing a developing cartridge accommodating chamber 202 and a photosensitive drum 203 rotatably mounted in the frame body 201, and in the left-right direction, card slots 204 are provided on both side walls of the frame body 201, a bottom plate 208 extends in the front-rear direction, and openings 209 are provided on the bottom plate 208 for allowing electrical contacts located in the developing cartridge 100 to be exposed; the catch groove 204 is used for engaging with the support portion 18L/18R at the end in the left-right direction of the developing cartridge 100 and allowing the developing cartridge to rotate relative to the drum stand 200 with the support portion 18L/18R as a fulcrum.

FIG. 3 is an exploded view of a chip connection assembly in a developing cartridge according to an embodiment of the present invention; fig. 4 is a side view of the developing cartridge according to the first embodiment of the present invention, as viewed from the bottom up in the up-down direction after hiding the chip mount component.

As shown in fig. 2 and 3, the end cap 11 or the housing 1 is further provided with a chip mounting portion 111 for mounting the chip 7 and a chip communication assembly 9 that can electrically disconnect the electrical contact 72 from the device without establishing a communication connection therebetween and electrically connect the electrical contact 72 to the device with establishing a communication connection therebetween; the chip 7 comprises a substrate 71, an electric contact 72 and a storage part 73 which are respectively positioned at two sides of the substrate 71, the electric contact 72 is electrically connected with the storage part 73, the electric contact 72 is also communicated with the equipment, and various parameter information of the developing cartridge 100 is stored in the storage part 73; alternatively, the electrical contact 72 and the storage portion 73 may be provided separately and connected by a wire.

At least the electric contact 72 is on the same side as the driving force receiving member 15 in the left-right direction, that is, at least the electric contact 72 is provided at the driving end 101, and at this time, the electric contact 72 and the conductive member 14 are respectively located at both longitudinal ends of the housing 1, and correspondingly, the parts of the apparatus for supplying power to the conductive member 14 and the electric contact 72 are respectively provided at both longitudinal ends of the housing 1, and the electromagnetic interference generated therebetween is reduced; at least the electric contact 72 is disposed away from the driving force receiver 15 in the front-rear direction, and as shown in fig. 4, the developing cartridge 100 has a dimension D0 in the front-rear direction, where a center line LM passes through the center point M and is parallel to the left-right direction, the driving force receiver 15 and the electric contact 72 are respectively located on both sides of the center line LM, and the electric contact 72 is closer to the rear 104 than the driving force receiver 15, or the driving force receiver 15 is closer to the front 103 than the electric contact 72, and thus, the electric contact 72 is less affected by vibrations from the driving force receiver 15 generated when it rotates.

Further, the developing cartridge 100 further includes an agitating member (not shown) inside the casing 1 and a driving member 59 (shown in fig. 4) for driving the agitating member to move, the driving member 59 being driven by the driving force of the driving force receiving member 15, the agitating member being for agitating toner inside the casing to prevent the toner from agglomerating, and at least the electrical contact 72 being located behind the driving member 59/the rotational axis L3 of the agitating member in the front-rear direction, thereby further reducing the influence of vibration on the electrical contact 72 generated when the driving force of the driving force receiving member 15 is transmitted to each component inside the developing cartridge.

As described above, the developing cartridge 100 further includes the chip communicating member 9, at least a portion of the chip communicating member 9 is a movable member movable with respect to the casing 1, when the movable member is located at the first position, the movable member disconnects the electrical connection between the electrical contact 72 and the device and cannot establish the communication connection therebetween, at this time, the movable member is disconnected from the electrical contact 72 and is not electrically communicated therebetween, when the movable member is located at the second position, the movable member disconnects the electrical contact 72 and is electrically connected to the device and establishes the communication connection therebetween, at this time, the movable member is electrically communicated with the electrical contact 72; the movable member is located at a first position before the developing cartridge 100 is mounted to the drum frame 200 or the apparatus, and the movable member is subjected to an external force from the first position to a second position in a process of mounting the developing cartridge 100 toward the drum frame 200 or the apparatus; when the developing cartridge 100 is removed, the movable member returns to the first position again. Since the movable member is provided to be movable, even if vibrations generated from the driving force receiving member 15 are transmitted to the chip communicating member 9/movable member during the operation of the developing cartridge 100, the chip communicating member 9/movable member can eliminate the influence of these vibrations by its own structure.

In the present embodiment, the movable member is mounted so as to be rotatable about a rotation axis L6, which is L6 parallel to the rotation axis L/L5. As shown in fig. 3, the chip interconnection component 9 includes a substrate 91 and a conductor 92 mounted on the substrate 91, the substrate 91 is disposed to be rotatable about a rotation axis L6, the conductor 92 is rotatable along with the rotation of the substrate 91, and thus, any one of the substrate 91 and the conductor 92 can be regarded as a movable member; generally, the substrate 91 is made of a non-conductive material, the conductors 92 are made of a conductive material, for example, the conductors 92 are formed by die-casting a metal sheet, and the number of the conductors 92 corresponds to the number of the electrical contacts 72, which will be described as an example; briefly, the conductor 92 is made of conductive resin, and the substrate 91 and the conductor 92 are integrally formed by injection molding.

The conductor 92 includes a first contact portion 921, a second contact portion 922, and a connector 923 for connecting the first contact portion 921 and the second contact portion 922, wherein the first contact portion 921 is used for electrically connecting with the device to obtain an electrical signal, and the second contact portion 922 is used for electrically connecting with the electrical contact 72, so that the device is electrically connected with the electrical contact 72. The base plate 91 is provided with conductor mounting grooves (not shown) in which each conductor 92 is mounted, and the problem of short circuit between adjacent conductors is avoided, as shown in the figure, the base plate 91 includes a first mounting portion 911 and a second mounting portion 912, and an acted portion 913 located between the first mounting portion and the second mounting portion, the acted portion 913 being for engaging with a support shaft 19 provided on the housing 1 or the drive end cap 11 so that the base plate 91 is rotatable about the support shaft 19.

The first mounting portion 911 is configured to carry the first contact portion 921, and the second mounting portion 912 is configured to carry the second contact portion 922, and further, the mounting grooves form a through hole 911a on the first mounting portion 911, so that the first contact portion 921 is exposed through the through hole 911 a.

Fig. 5 is a side view of the position of the chip mounting assembly in the developing cartridge viewed from left to right in the left-right direction before the developing cartridge according to the first embodiment of the present invention is mounted to the drum rack; fig. 6 is a comparison view of the state of the conductive sheet before and after the developing cartridge is mounted in the chip connection assembly according to the first embodiment of the present invention.

Before the developing cartridge 100 is mounted to the drum stand 200 or the apparatus, the substrate 91/conductor 92 is in the first position shown in fig. 5, the first mounting portion 911/first contact portion 921 is located above the lowest point Q of the developing cartridge 100, and the second contact portion 922 and the electrical contact 72 are separated from each other and disconnected, so that the first contact portion 921 can be protected by the casing 1/driving end cap 11 from rubbing against the inner wall of the drum stand 200 or the apparatus during the mounting of the developing cartridge 100; even if the first mounting portion 911/first contact portion 921 collides with the drum rack 200 or the inner wall of the device due to a large magnitude of the mounting operation, the second contact portion 922 does not contact the electrical contact 72, so that the second contact portion 922 and the electrical contact 72 are prevented from being rubbed against each other, and the probability of abrasion of the chip 7 is reduced.

Further, the chip interconnection assembly 9 further includes a pushing member 93 coupled to the base plate 91 or the conductor 92, the pushing member 93 is used for pushing the base plate 91, and makes the base plate 91 have a tendency to rotate in the direction (clockwise) indicated by d2 around the rotation axis L6, that is, the second contact portion 922 is away from the electrical contact 72, and the first contact portion 921 is close to the driving force receiving member 15, preferably, the pushing member 93 is a compression spring installed between the second mounting portion 912 and the housing 1/driving end cap 11, or the pushing member 93 is a tension spring installed between the first mounting portion 911 and the housing/driving end cap 11.

It is realised that said thrust element 93 can be eliminated, by keeping the base plate 91/conductor 92 in the first position by setting the mass of the first mounting portion 911 to be lighter than the mass of the second mounting portion 912, and that, using the principle of leverage, the mobile element 9 will have a tendency to rotate about the axis of rotation L6 in the direction indicated by d2, when the mass of the second mounting portion 912 is greater than the mass of the first mounting portion 911.

As the developing cartridge 100 is mounted toward the drum stand 200 or the apparatus, the support portion 18L/18R enters the card slot 204 provided in the drum stand 200 or the apparatus and rotates downward in the direction indicated by d (clockwise) around the support portion 18L/18R, when the second mounting portion 912 touches the drum stand bottom plate 208 or the inner wall of the apparatus, the movable member 9 forces the urging member 93 to elastically deform and rotate in the direction indicated by d1 (counterclockwise) opposite to the direction indicated by d2 around the rotation axis L6, when the developing cartridge 100 is mounted to the predetermined position, the second contact portion 922 contacts the electrical contact 72, the first contact portion 921 is electrically connected to the apparatus directly through the drum stand opening 209, and finally, the electrical contact 72 is connected to the apparatus in communication.

Fig. 6 shows a comparison of the position of the conductor 92 in the first position and the second position, wherein the dashed lines in fig. 5 and 6 indicate that the conductor 92 is in the first position and the solid lines indicate that the conductor 92 is in the second position. As shown in fig. 6, when the conductor 92 is at the first position, the first contact portion 921 has a first distance from the rotation axis L6 in the vertical direction, and when the conductor 92 is at the second position, the first contact portion 921 has a second distance from the rotation axis L6 in the vertical direction, and the first distance is smaller than the second distance.

Example two

This embodiment is different from the above-described embodiments in that the base plate 91/conductor 92 as the movable member is provided so as to be slidable in the up-down direction, without being rotated about the rotation axis L6,

as shown in fig. 7, the chip connection assembly 9 further includes a movable rod 95 coupled to the substrate 91, and the substrate 91 is supported by a support table 951 provided on the movable rod 95, so that the substrate 91 and the conductor 92 on the substrate 91 can move in the up-down direction along with the movable rod 95, and the substrate 91/conductor 92 is in the first position before the developing cartridge 100 is mounted on the drum rack 200 or the apparatus, and at this time, the second contact portion 922 and the electrical contact 72 are separated from each other to be electrically disconnected; when the developing cartridge 100 is mounted to the drum rack 200 or a predetermined position of the apparatus, the movable lever 95 is abutted by the drum rack bottom plate 209 or the apparatus inner wall so that the substrate 91/conductor 92 moves upward to reach a second position, the second contact portion 922 comes into contact with the electrical contact 72 to achieve electrical connection, and at the same time, the first contact portion 921 is exposed through the first mounting portion 911; when the developing cartridge 100 is taken out, the movable lever 95 is no longer abutted, and the movable lever 95 moves downward by gravity, and the substrate 91/conductor 92 returns from the second position to the first position.

EXAMPLE III

In the present embodiment, the substrate 91/the conductor 92 as the movable element is provided slidably along a plane intersecting the vertical direction, and the movable element also has the first position where the second contact portion 922 is separated from the electrical contact 72 to break the electrical connection and the second position where the second contact portion 922 is in contact with the electrical contact 72 to make the electrical connection.

It can be realized that the sliding direction of the movable member may be performed in a front-back direction, or in a left-right direction, or in an inclined direction inclined from the up-down direction, and at the same time, the developing cartridge 100 is further provided with a reset member coupled to the movable member for forcing the movable member to move toward the first position, and along with the installation of the developing cartridge 100 toward the drum rack 200 or the device, the movable member is forced to push by using a certain portion of the drum rack 200 or the device, so that the movable member moves from the first position to the second position, and the reset member elastically deforms, and when the developing cartridge 100 is taken out, the movable member returns from the second position to the first position under the reset force of the reset member.

Example four

In the above embodiment, the substrate 91/conductor 92 as the movable member is provided to be movable as a whole, however, limited by the size and space of the developing cartridge 100, only a part of the substrate 91/conductor 92 is made movable to be more advantageous for the overall structural design of the developing cartridge 100.

For this reason, the movable member in the present embodiment includes the second mounting portion 912 and the second contact portion 922 mounted in the second mounting portion 912, and the first mounting portion 911 and the first contact portion 921 are integrally and fixedly mounted on the housing 1 or the driving end cap 11 as a fixed portion of the chip communication component 9. The movable member in this embodiment is movable by rotation or sliding between the first position where the second contact portion 922 is separated from the electrical contact 72 to be electrically disconnected and the second position where the second contact portion 922 is in contact with the electrical contact 72 to be electrically connected.

Wherein, in the first position and the second position, the movable part and the fixed part can be electrically connected; preferably, in the first position, the second contact portion 922 is further configured to be separated from the first contact portion 921 to be electrically disconnected, that is, the movable member is electrically disconnected from the fixed portion, and in the second position, the second contact portion 922 is simultaneously in contact with the first contact portion 921 and the electrical contact 72 to be electrically connected. In this embodiment, in the process of mounting and removing the developing cartridge 100, the first contact portion 921 which is fixedly provided is protected by the first mounting portion 911 and is not easily rubbed against the drum rack 200 or the inner wall of the apparatus, and even if the first contact portion 921 is rubbed and loses efficacy, the end user may replace only the first contact portion 921 or replace it together with the first mounting portion 911, and the chip 7 with higher value is not rubbed.

EXAMPLE five

Fig. 8 is a perspective view of a developing cartridge according to a fifth embodiment of the present invention as viewed from the driving end; FIG. 9 is an exploded view of a chip connection part in the developing cartridge according to the fifth embodiment of the present invention; fig. 10 is a perspective view of the inside of the drive end cover according to the fifth embodiment of the present invention.

In the above-described embodiment, the chip 7/the electrical contact 72 is fixed, and the substrate 91/the conductor 92 moves as a movable member between the first position and the second position where the electrical connection with and disconnection from the electrical contact 72 are achieved, as described in the fourth embodiment, the overall movement of the substrate 91/the conductor 92 may be limited by the size and the internal space of the developing cartridge 100, and the size of the chip 7 or the electrical contact 72 is relatively smaller, and hereinafter, the description will be given taking the example where the chip 7/the electrical contact 72 is movable.

As shown in fig. 8 and 9, the chip interconnection assembly 9 includes a movable member 94 movable relative to the housing 1 and a base plate 91 and a conductor 92 immovable relative to the housing 1, at least the electrical contact 72 is mounted in the movable member 94, in which case the base plate 91 and the conductor 92 form a fixed portion, and preferably, the entire chip 7 is mounted in the movable member 94. As in the first embodiment, the substrate 91 may be made of a conductive material or a non-conductive material, the substrate 91 may be formed integrally with or separately from the conductor 92, the substrate 91 has a first mounting portion 911, a second mounting portion 912 and a conductor mounting groove, the conductor 92 has a first contact portion 921, a second contact portion 922 and a connector 923 connecting the first contact portion and the second contact portion, the first contact portion 921 is used for electrical connection with a device, and the second contact portion 922 is used for electrical connection with an electrical contact; as a simplified structure, the substrate 91 may be omitted and the conductor 92 fixed to the drive end cap 11 or the housing 1, while still achieving the object of the present invention.

The movable member 94 may be mounted on the driving end cap 11 or the housing 1, and before the developing cartridge 100 is mounted on the drum stand 200 or the device, the movable member 94 is located at the first position, and the second contact portion 922 and the electrical contact 72 are separated from each other to be electrically disconnected; in the process of mounting the developing cartridge 100 to the drum stand 200 or the apparatus, the movable member 94 is moved relative to the casing 1 by the drum stand 200 or the inner wall of the apparatus, and when the developing cartridge 100 is mounted to a predetermined position of the drum stand 200 or the apparatus, the movable member 94 is moved from the first position to the second position, at which time the second contact portion 922 is brought into contact with the electrical contact 72 to achieve electrical connection.

Specifically, in the present embodiment, the movable member 94 is configured to move relative to the housing 1 along a guiding member preset on the housing 1/the driving end cap 11, and further, the chip communication assembly 9 further includes a reset member 93 connected to/abutted against the movable member 94, the reset member 93 is configured to apply an urging force to the movable member 94 to urge the movable member 94 to have a tendency to move toward the first position, preferably, the reset member 93 is a plate-shaped member integrally formed with the movable member 94, and optionally, the reset member 93 may also be a compression spring or a tension spring between the movable member 94 and the housing 1/the driving end cap 11.

FIG. 10 is a perspective view of the inside of a drive end cap according to a fifth embodiment of the present invention; fig. 11 is a side view of the developing cartridge according to the fifth embodiment of the present invention, viewed from left to right in the left-right direction after the driving end cap is hidden; fig. 12 is a schematic view showing relative positions of the conductor and the movable member when the movable member is located at the first position in the developing cartridge according to the fifth embodiment of the present invention.

Preferably, the movable member 94 is guided along a guide on the end cap 11, and the base plate 91 and the conductor 92 are fixedly mounted on the end cap 11. As shown in fig. 10, the inner side (the side facing the housing 1) of the drive end cap 11 is provided with a receiving groove 115, a front notch 116 and a rear notch 118 communicating with the receiving groove 115, the substrate 91 and the conductor 92 are received by the receiving groove 115, the first contact part 921 is exposed from the front notch 116, and the second contact part 922 is exposed from the rear notch 118.

Further, the driving end cap 11 is further provided with a guide plate 117, and correspondingly, the movable member 94 is further provided with a guide groove g, as shown in fig. 11, the guide groove g is formed between the front extension plate 96 and the rear extension plate 97, wherein the front extension plate 96 is connected with the movable member 94, preferably, the front extension plate 96 and the rear extension plate 97 are integrally formed, the rear extension plate 97 is connected with the front extension plate 96, the guide groove g and the guide plate 117 are inclined with respect to the front-rear direction, and the guide plate 117 gradually approaches the rear portion 104 from top to bottom in the up-down direction.

As shown in fig. 11 and 12, at least the electric contact 72 and the driving force receiving member 15 are located on both sides of the center line LM in the front-rear direction, and at least the electric contact 72 is located closer to the rear 104 than the driving force receiving member 15, or the driving force receiving member 15 is located closer to the front 103 than the electric contact 72, and further, at least the electric contact is located behind the rotational axis of the driving member for driving the movement of the stirring member. In the first position, the second contact portion 922 is separated from the electrical contact 72 to be electrically disconnected, the free end of the reset member 93 abuts against the driving end cap 11, the movable member 94 is pressed by contacting with the rear side plate 201a (shown in fig. 1) of the drum frame 200 or the inner wall of the apparatus as the developing cartridge 100 is mounted toward the drum frame 200 or the apparatus, thus, the movable piece 94 starts to move upward and forward as shown in fig. 11, guided by the guide plate 117, until the electrical contact 72 abuts against the second contact portion 922 to achieve electrical connection, the movable piece 94 reaches the second position, meanwhile, the free end of the reset member 93 slides on the driving end cap 11 and is deformed relative to the movable member 94 to accumulate potential energy, and when the developing cartridge 100 is taken out, the movable member 94 is not pressed any more, under the action of the reset force of the reset member 93, the movable member 94 moves from the second position to the first position, and the electrical contact 72 and the second contact portion 922 are separated from each other to break the electrical connection.

Although the fifth embodiment describes that the movable member 94 moves between the first position and the second position in a sliding manner, it is also possible to arrange the movable member 94 to rotate around the rotation axis according to the descriptions of the first embodiment, the second embodiment, and the fourth embodiment, and the specific implementation structure can be referred to the descriptions of the first embodiment, the second embodiment, and the fourth embodiment.

In the drawings, the first contact portion 921, the second contact portion 922, and the electrical contact 72 have specific dimensions in both the front-back direction and the left-right direction, but the first contact portion 921, the second contact portion 922, and the electrical contact 72 are not limited by the dimensions, and it should be understood that the first contact portion 921, the second contact portion 922, and the electrical contact 72 are: the point at which the first contact portion 921 is electrically connected to the device, and the point at which the second contact portion 922 is electrically connected to the electrical contact 72.

As described above, in the developing cartridge 100 according to the present invention, at least the electric contact 72 of the chip 7 is fixedly mounted at a position away from the driving force receiving member 15 in the front-rear direction, and the chip 7 is brought into communication with the apparatus through the chip communication member 9 which is movable at least partially relative to the casing 1, on the one hand, the electric contact 72 is reduced by the vibration of the driving force receiving member 15 when the developing cartridge is operated, and on the other hand, the electric contact 72 is not rubbed against the drum frame 200 or the inner wall of the apparatus during the mounting and removing of the developing cartridge 100, which causes the problem that the electric conductivity of the chip 7 is lost, or short-circuited or falls off from the developing cartridge.

Claims

1. A developing cartridge detachably mountable in the apparatus, the developing cartridge including a housing, a developing roller rotatably mounted in the housing, a chip, and a driving force receiver at an end of the housing;

the driving force receiving member is used for receiving driving force from the equipment to drive the developing roller to rotate; the chip comprises an electric contact and a storage part which are in point connection with each other, the storage part stores parameter information of the developing box, and the electric contact is used for establishing communication connection with equipment; it is characterized in that the preparation method is characterized in that,

the developing cartridge further includes a chip communication member, at least a portion of which is movable as a movable member between a first position and a second position with respect to the casing;

in the first position, the moveable member electrically disconnects the electrical contact from the device without establishing a communicative connection therebetween, and in the second position, the moveable member electrically disconnects the electrical contact from the device without establishing a communicative connection therebetween.

2. A developing cartridge according to claim 1, wherein a center line passes through a midpoint in a front-rear direction of the developing cartridge and is parallel to the up-down direction, the developing roller is located in front of the casing, the driving force receiving member and the electric contact are respectively located on both sides of the center line, and the electric contact is located closer to a rear of the developing cartridge than the driving force receiving member.

3. A developing cartridge according to claim 2, wherein the developing cartridge further comprises an agitating member in the casing, the agitating member being moved by receiving the driving force of the driving force receiving member, and the electrical contact is located rearward of a rotational axis of the agitating member in the front-rear direction.

4. A developing cartridge according to claim 1, further comprising a counting assembly at an end of the casing, the counting assembly receiving the driving force of the driving force receiving member to interact with a detecting part in the apparatus.

5. A developing cartridge according to any one of claims 1-4, wherein the movable member is rotatably mounted about a rotational axis parallel to the rotational axis of the driving force receiving member.

6. A developing cartridge according to claim 5, wherein in the first position, the movable member and the electrical contact are separated from each other to be electrically disconnected, and in the second position, the movable member and the electrical contact are brought into contact with each other to be electrically connected.

7. A developing cartridge according to claim 6, wherein the chip connection member includes a base plate and a conductor mounted on the base plate, the conductor being rotatable with rotation of the base plate;

the conductor is provided with a first contact part and a second contact part which are electrically connected, the substrate is provided with a first mounting part and a second mounting part which are mutually connected, the first mounting part is used for bearing the first contact part, the second mounting part is used for bearing the second contact part, the first contact part is exposed through the first mounting part to form electrical connection with the electrical contact, and the second contact part is used for forming electrical connection with equipment;

the developing cartridge further includes an urging member combined with the substrate or the conductor for urging the second contact portion away from the electrical contact.

8. A developing cartridge according to claim 7, wherein the mass of the first mounting portion is smaller than the mass of the second mounting portion.

9. A developing cartridge according to any one of claims 1-4, wherein the chip connection member further includes a movable lever coupled to the movable member, the movable lever being movable in an up-down direction of the developing cartridge, the movable member being movable between the first position and the second position along with the movable lever.

10. A developing cartridge according to any one of claims 1-4, wherein the movable member is slidable on a plane intersecting the up-down direction.

11. The developing cartridge according to any one of claims 1 to 4, further comprising a driving end cap disposed on the same side as the driving force receiver, the driving force receiver being exposed through the driving end cap;

the chip communicating component also comprises a fixed part fixedly arranged on the shell or the driving end cover, the moving part is electrically connected with the fixed part at the first position, but the moving part is separated from the electric contact to break the electric connection, and the moving part is simultaneously contacted with the fixed part and the electric contact to realize the electric connection at the second position; or, in the first position, the movable part is disconnected from the fixed part, meanwhile, the movable part and the electric contact are separated from each other to be disconnected from the electric connection, and in the second position, the movable part is simultaneously contacted with the fixed part and the electric contact to realize the electric connection.

12. A cartridge according to any one of claims 1-4, wherein the chip connection assembly further comprises a fixed portion immovable relative to the casing, the fixed portion having a conductor disposed therein and having a first contact portion and a second contact portion electrically connected, the first contact portion being for electrical connection with the apparatus and the second contact portion being for electrical connection with the electrical contact; at least an electrical contact is mounted in the moving member;

when the movable piece is positioned at the first position, the electric contact and the second contact part are separated from each other to be disconnected;

the electrical contact moves from the first position to the second position with the movable member during the process in which the developing cartridge is mounted;

when the developing cartridge is mounted to the predetermined position, the movable member reaches the second position, and the electrical contact comes into contact with the second contact portion to achieve electrical connection.

13. A cartridge according to claim 12, wherein the chip communication member further includes a reset member abutting against the movable member, the reset member being for urging the movable member to have a tendency to move toward the first position.

14. A process cartridge, characterized in that the process cartridge comprises a drum frame and the developing cartridge according to any one of claims 1 to 13, the developing cartridge being detachably mountable in the drum frame.

15. A process cartridge according to claim 14, wherein the drum frame has a bottom plate and an opening provided on the bottom plate, the movable member is abutted by the drum frame to move from the first position to the second position when the developing cartridge is mounted toward the drum frame, and the electrical contact is exposed through the opening.