CN114740698A

CN114740698A - Developing box

Info

Publication number: CN114740698A
Application number: CN202110016732.XA
Authority: CN
Inventors: 晏梅; 刘小兵; 敖仕平; 彭健
Original assignee: Jiangxi Yibo Electronic Technology Co Ltd
Current assignee: Jiangxi Yibo Electronic Technology Co Ltd
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2022-07-12

Abstract

The present invention provides a developing cartridge detachably mountable to an image forming apparatus having a chip contact point and a detecting unit, the developing cartridge comprising: a developing roller rotatable about an axis extending in an axial direction; a housing for accommodating a developer, including a first sidewall and a second sidewall separated from the first sidewall in an axial direction; an input gear provided at the first side wall and capable of receiving and transmitting a driving force from the image forming apparatus; a detection member provided at the second side wall, contactable with and detectable by the detection unit; still include the chip subassembly, the chip subassembly includes: an integrated circuit; an interposer electrically connected between the integrated circuit and the chip contact pads. Through the installation angle or the installation position of changing the chip, the installation space of the chip on the bottom surface of the shell is reduced, the chip is convenient to install and take, and the miniaturization of the developing box is facilitated.

Description

Developing box

Technical Field

The invention relates to the field of imaging, in particular to a developing box.

Background

An electronic image forming apparatus is an image forming apparatus that forms a visible image on a record by the principle of electrophotographic image formation, and includes a copying machine, a printer, an LED printer, and the like. An image forming apparatus generally includes a process cartridge detachably mountable in an image forming apparatus main body, and the existing process cartridge includes various forms, and for example, the process cartridge may be a photosensitive drum cartridge including a photosensitive drum, or a developing cartridge storing a developer, or an integral cartridge integrally providing the above-described developing cartridge and the photosensitive drum cartridge. The image forming principle of the image forming apparatus is: first, the surface of the photosensitive drum is charged to a predetermined potential. A laser beam is projected onto the surface of the photosensitive drum to form an electrostatic latent image. A visible image is obtained by supplying a developer to the electrostatic latent image. Next, the visible developer image developed on the photosensitive drum is transferred to a printing medium directly or through an intermediate transfer medium and then fixed to the printing medium through a fixing process.

Typically, the process cartridge is print-life and must be replaced when the process cartridge reaches the print life. For this reason, the user must know various information about the process cartridge. The process cartridge is equipped with a chip that stores various information about its operation, and when the process cartridge is used up, it is necessary to replace a new one. In the prior art, when the chip is fixed on the processing box, a clamping groove needs to be prefabricated on the outer surface of the processing box, then the chip is placed in the clamping groove, and then the chip is stuck by glue to complete the fixation of the chip. For miniaturization of the developing cartridge, these chips are usually fixed at a bottom position of one end in the longitudinal direction on the process cartridge, the chip mounting space is small, and it is inconvenient to mount and dismount the chips.

Disclosure of Invention

In order to better develop the prior art, the present invention provides a developing cartridge detachably mountable to an image forming apparatus having a chip contact point and a detecting unit, the developing cartridge comprising:

a developing roller rotatable about an axis extending in an axial direction;

a housing for accommodating a developer, including a first sidewall and a second sidewall separated from the first sidewall in an axial direction;

an input gear provided at the first side wall and capable of receiving and transmitting a driving force from the image forming apparatus;

a detection member provided at the second side wall, contactable with and detectable by the detection unit;

still include the chip subassembly, include:

an integrated circuit;

an interposer electrically connected between the integrated circuit and the chip contact pads.

Further, the paper guide device comprises a supporting piece, wherein the supporting piece is arranged on the bottom surface of the shell, the supporting piece is arranged between the first side wall and the second side wall, the bottom surface of the shell is provided with a plurality of paper guide ribs, and the supporting piece is arranged between two adjacent paper guide ribs.

Further, the support member includes a pair of support sidewalls and a plurality of support ribs extending from the inner sides of the support sidewalls, and the plurality of support ribs support the bottom surface of the integrated circuit so that the chip terminals of the integrated circuit are exposed to the support member.

Further, the adaptor includes first adaptor plate, second adaptor plate and connect in lead the portion of connecing between first adaptor plate and the second adaptor plate, first adaptor plate is close to first lateral wall sets up, the second adaptor plate sets up on the support piece.

Further, still including the protecting cover that covers at least part input gear, the protecting cover is provided with the support, the support is formed with the portion of holding and detains the portion of holding, first adapter plate install extremely during the support, first adapter plate is arranged in the portion of holding, it is fixed to detain a buckle first adapter plate.

Furthermore, the first adapter plate is provided with a plurality of conductive probes, the conductive probes are electrically connected with the conductive connection parts through the first adapter plate, and one tail ends of the conductive probes penetrate through and protrude out of the surface of the first adapter plate to be electrically connected with the chip contact points.

Further, the interposer includes a plurality of conductive sheets, each of the conductive sheets includes a main body portion, a first contact portion for electrically contacting the chip contact point, and a second contact portion for electrically contacting the integrated circuit, and the main body portion extends in an axial direction.

Further, the chip assembly has electrical contact surfaces electrically connected with the chip contact points; the electrical contact surface forms a first angle with a mounting direction of the developing cartridge, and an angle range of the first angle is 45 degrees to 90 degrees.

Further, the adaptor comprises a guide connecting piece, the guide connecting piece comprises a fixing part, a third contact part extending from the bottom surface of the fixing part and a fourth contact part extending from one tail end of the fixing part, the third contact part is electrically connected with the integrated circuit, and the fourth contact part is in contact with the chip contact point to form electrical connection.

Further, a second included angle is formed between the fourth contact portion and the fixing portion, and the angle range of the second included angle is 45 degrees to 90 degrees.

According to the developing box, the mounting position or the mounting angle of the chip is changed, so that the mounting space of the chip on the bottom surface of the shell is reduced, the chip is convenient to mount and dismount, and the miniaturization of the developing box is facilitated.

Description of the drawings:

fig. 1 is a schematic front view of a developing cartridge of the present invention;

fig. 2 is a schematic structural view of a gear train of a first side wall of the developing cartridge of the present invention;

FIG. 3 is a partial schematic structural view of a second side wall of the developing cartridge of the present invention;

fig. 4 is a schematic view of the bottom structure of the developing cartridge in the first embodiment of the present invention;

fig. 5 is a schematic perspective view of a developing cartridge in a first embodiment of the present invention;

fig. 6 is a partially enlarged schematic view of the bottom surface of the developing cartridge in the first embodiment of the present invention;

fig. 7 is a partially enlarged schematic view of a developing cartridge supporting member in the first embodiment of the present invention;

fig. 8 is a partially enlarged schematic view of a first side wall of the developing cartridge in the first embodiment of the present invention;

fig. 9 is a schematic view of mounting of the first transfer plate of the developing cartridge in the first embodiment of the present invention;

fig. 10 is a schematic view showing the structure of the bottom surface of the developing cartridge in the second embodiment of the present invention;

fig. 11 is a schematic view showing the structure of the bottom surface of the developing cartridge in the second embodiment of the present invention;

fig. 12 is a schematic perspective view of a developing cartridge in a third embodiment of the present invention;

fig. 13 is a partially enlarged schematic view of a developing cartridge in a third embodiment of the invention;

fig. 14 is a schematic view showing mounting of an integrated circuit of the developing cartridge in the third embodiment of the present invention;

fig. 15 is a schematic view showing the structure of the bottom surface of a developing cartridge in the fourth embodiment of the present invention;

fig. 16 is a schematic perspective view of a developing cartridge in a fourth embodiment of the present invention;

fig. 17 is a schematic view showing a first side wall structure of a developing cartridge in a fourth embodiment of the present invention;

fig. 18 is a partial structural schematic view of a developing cartridge in a fourth embodiment of the invention;

fig. 19 is a schematic structural view of a supporting member and a guide piece of a developing cartridge in a fourth embodiment of the present invention.

The specific implementation mode is as follows:

in order to make the object, technical scheme and technical effect of the embodiment of the present invention clearer, the technical scheme of the developing cartridge of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be apparent that the described embodiment is only one preferred embodiment of the present invention, not all embodiments, and other embodiments obtained by those skilled in the art without inventive efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

In the following description, a direction in which the rotation axis of the developing roller extends is referred to as a first direction (may also be referred to as an axial direction), which is also a direction in which the rotation axis of the photosensitive drum extends; the second direction is a mounting direction of the developing cartridge to the drum cartridge. The first direction and the second direction cross each other.

As shown in fig. 1-4. The developing cartridge 100 in this embodiment includes a casing 1, the casing 1 is configured to accommodate a developer therein, and a cavity accommodating the developer is formed by welding an upper casing and a lower casing. The housing 1 extends in a first direction and includes a first sidewall 11 and a second sidewall 12 separated from each other in the first direction. The developing roller 2 is accommodated in the casing 1 of the developing cartridge 100 and is rotatable with respect to a shaft of the developing roller 2 extending in the first direction, and both ends in the axial direction of the developing roller 2 are supported by the first side wall 11 and the second side wall 12 of the casing 1. The powder feeding roller 3 is accommodated in the casing 1 of the developing cartridge 100 and is rotatable with respect to a powder feeding roller shaft extending in the first direction, both ends of the powder feeding roller shaft being supported by the first side wall 11 and the second side wall 12 of the casing 1, respectively. The stirring frame can convey the carbon powder in the shell 1 to the powder feeding roller 3, the powder feeding roller 3 conveys the received carbon powder to the developing roller 2, and the developing roller 2 conveys the developer to the photosensitive drum in the drum box after receiving the carbon powder transmitted by the powder feeding roller 3 so as to develop the electrostatic latent image on the surface of the photosensitive drum. In the present embodiment, a part of the developing roller 2 is located inside the casing 1; the other part of the developing roller 2 is exposed to the outside of the casing 1.

As shown in fig. 2, the developing cartridge 100 of the present embodiment is further provided with a gear train 5 outside the first sidewall 11, and the gear train 5 transmits the driving force received from the image forming apparatus into the developing cartridge 100. The gear train 5 of the developing cartridge 100 of the present invention is disposed outside the first side wall 11, and includes an input gear 51, a developing roller gear 52, a powder feeding roller gear 53, and a transmission gear 54. The developing roller gear 52 is mounted at a first end of the developing roller 2 to be rotatable together with the developing roller 2; the powder feeding roller gear 53 is installed at the first end of the powder feeding roller 3 and can rotate together with the powder feeding roller 3; the input gear 51 is provided on the first side wall 11 and is rotatable about a shaft (not shown) extending in an axial direction, and the input gear 51 is engageable with a driving force input member (not shown) in the image forming apparatus to receive a driving force from the image forming apparatus for rotation. The input gear 51 is meshed with the developing roller gear 52 and the powder feeding roller gear 53 respectively to transmit the received driving force to the developing roller 2 and the powder feeding roller 3 respectively so as to drive the developing roller 2 and the powder feeding roller 3 to rotate; the transmission gear 54 is provided on the first side wall 11 and is rotatable about another axis extending in the axial direction, the transmission gear 54 is engaged with the input gear 51, and the transmission of the driving force of the input gear 51 to the stirring frame gear 55 provided on the second side wall 12 is achieved by a transmission rod to transmit the driving force to the stirring frame gear 55 to rotate the stirring frame together.

As shown in fig. 2, the first side wall 11 of the developing cartridge 100 of the present invention is further provided with a protecting cover 13 covering the gear train 5, the protecting cover 13 can prevent the gear train of the developing cartridge 100 from being interfered by the outside, so as to stably limit the gear train between the first side wall 11 and the protecting cover 13 in the axial direction, and the gear train 5 can stably transmit the driving force. A hole portion is provided on the protective cover 13 to expose a part of the input gear 51 to the outside so that the input gear 51 receives the driving force from the image forming apparatus.

As shown in fig. 2 and 3, the detected member 4 of the developing cartridge of the present embodiment includes a gear portion 41 and a detection projection 42. When the input gear 51 receives a driving force from the image forming apparatus to rotate and drives the first stirring rack gear 55 to rotate, and transmits the driving force to the connecting gear 56 through the stirring rack 18, the connecting gear 56 transmits the received driving force to the gear part 41, and the gear part 41 can rotate around a shaft on the second side wall to rotate from the first position to the second position; in the first position, the gear portion 41 is engaged with the connecting gear 56, and the gear portion 41 can receive the driving force to rotate, so that the detecting projection 42 on the detecting member 4 can be recognized by a detecting unit (not shown) in the image forming apparatus; when the gear portion 41 continues to rotate to the second position, the gear portion 41 is disengaged from the connecting gear 56, and the gear portion 41 cannot receive the driving force any more to rotate and is finally located at the second position where the detection is terminated. In the present embodiment, the number of the detection projections 42 is set to 4; the number of the detection projections 42 and the shape of the detection projections 42 may be set according to the model of the developing cartridge 100, and are not limited to the shapes listed in the present embodiment. The detected member 4 may be provided as another member other than the gear structure as long as it can be detected and recognized by the detection unit in the image forming apparatus.

As shown in fig. 4, the chip assembly 6 includes an integrated circuit 61 as a storage medium, a support 62 for supporting the integrated circuit 61, and an interposer 63 connected between the chip electrical contacts and the integrated circuit 61.

As shown in fig. 5 to 9, the supporting member 62 is disposed between the first side wall 11 and the second side wall 12, and the supporting member 62 is disposed closer to the second side wall 12, and the supporting member 62 is away from the first side wall with a compact layout of components, which facilitates mounting and dismounting of the integrated circuit 61. The integrated circuit 61 may store various information related to the developing cartridge 100, and the integrated circuit 61 includes a plurality of chip terminals 61a, which are metal contacts electrically connectable with chip contacts on the image forming apparatus through an adaptor 63, so that the image forming apparatus can read and write information from and to the integrated circuit 61. The supporting member 62 is disposed on the bottom surface of the housing 1, specifically, the supporting member 62 is integrally formed with the housing 1, the bottom surface of the housing 1 is provided with a plurality of paper guide ribs 14, the supporting member 62 is disposed between two adjacent paper guide ribs 14, the supporting member 62 includes a pair of supporting side walls 621 and a plurality of supporting ribs 622 extending from the inner sides of the supporting side walls 621, and the plurality of supporting ribs 622 support the bottom surface of the integrated circuit 61 so that the chip terminals 61a of the integrated circuit 61 are exposed from the supporting member 62. In other embodiments, the supporting member 62 may be a separate member, and may be mounted on the bottom surface of the housing 1 by a mounting structure such as a snap, a screw, or the like. The adaptor 63 includes a first adaptor plate 631, a second adaptor plate 632 and a guiding portion 633 connected between the first adaptor plate 631 and the second adaptor plate 632, the first adaptor plate 631 is disposed on the protective cover 13, the protective cover 13 is provided with a support 15, the support is formed with an accommodating portion 151 for installing the first adaptor plate 631, the support 15 is further formed with a fastening portion 152, when the first adaptor plate 631 is installed on the support, the fastening portion 152 fastens and fixes the first adaptor plate 631, the fastening portion 152 has a guiding inclined surface (not numbered), and the first adaptor plate 631 is installed on the accommodating portion 151 along the guiding inclined surface and is fastened and fixed by the fastening portion 152. The first transfer plate 631 is provided with a plurality of conductive probes 631a, the conductive probes 631a are electrically connected to the lead parts 633 through the first transfer plate 631, and one ends of the conductive probes 631a penetrate and protrude from the surface of the first transfer plate 631 to be electrically connected to chip contact points on the image forming apparatus. The first transfer plate 631 is a plate having conductive traces, and in this embodiment, the first transfer plate 631 is configured as a circuit board on which the conductive probes 631a are plug-in soldered. The second adaptor plate 632 is mounted on the support member 62 and electrically connected to the lead portion 633, specifically, the support member 62 further includes a fixing protrusion 623, two ends of the second adaptor plate 632 in a length direction (a first direction) are respectively provided with a through hole 6321, the fixing protrusion 623 is fixed to the through hole 6321 in a matching manner, the second adaptor plate 632 is provided with a transfer contact (not shown), one end of the transfer contact is electrically connected to the lead portion 633 through a conductive path of the second adaptor plate 632, and when the second adaptor plate 632 is mounted on the support member 62, the other end of the transfer contact is electrically connected to the chip terminal 61a of the integrated circuit 61. In this embodiment, the guide portion 633 is a wire harness, one end of the wire harness is electrically connected to the first adapter plate 631, and the other end of the wire harness is electrically connected to the second adapter plate 632, in this embodiment, the first adapter plate 631 and the second adapter plate 632 are both detachably installed, wherein the wire harness is welded to the first adapter plate 631 and the second adapter plate 632, in other embodiments, for convenience of installation, the first adapter plate 631 and the second adapter plate 632 may be provided with an electrical connector, both ends of the guide portion 633 are provided with a connector, the connector is correspondingly connected to the electrical connector, so that the guide portion 633 is detachably connected to the first adapter plate 631 and the second adapter plate 632.

As shown in fig. 8 and 9, the plurality of chip terminals 61a of the integrated circuit 61 are formed with electrical contact surfaces, the electrical contact surfaces are disposed between the first sidewall 11 and the second sidewall 12 in the first direction, and the electrical contact surfaces are disposed closer to the second sidewall 12, in the present embodiment, the conductive probes 631a are electrically connected to the chip contact points of the image forming apparatus by outwardly extending contact tips, and extend out of the cover surface to contact the chip contact points, thereby ensuring effective contact with the chip contact points and preventing poor contact.

Second embodiment

As shown in fig. 10, in the present embodiment, the chip assembly 7 includes an integrated circuit 71 as a storage medium, a support 72 for supporting the integrated circuit 71, and an interposer 73 connected between the chip electrical contacts and the integrated circuit 71.

The support 72 is disposed between the first sidewall 11 and the first sidewall 12, and the support 72 is disposed closer to the first sidewall 12. The integrated circuit 71 may store various information related to the developing cartridge 100, and the integrated circuit 71 includes a plurality of chip terminals 71a, which are metal contacts electrically connectable with chip contacts on the image forming apparatus through an adaptor 73, so that the image forming apparatus can read and write information from and to the integrated circuit 71. The support member 72 is disposed on the bottom surface of the housing 1, specifically, the support member 72 is integrally formed with the housing 1, the bottom surface of the housing 1 is provided with a plurality of paper guide ribs 14, the support member 72 is disposed between two adjacent paper guide ribs 14, the support member 72 includes a pair of support sidewalls and a plurality of support ribs extending from the inner sides of the support sidewalls, and the plurality of support ribs support the bottom surface of the integrated circuit 71 so that the chip terminals of the integrated circuit 71 are exposed from the support member 72. In other embodiments, the supporting member 72 may be a separate member, and may be mounted on the bottom surface of the housing 1 by a mounting structure such as a snap, a screw, or the like. The interposer 73 includes a plurality of conductive sheets 73, each of the conductive sheets 73 includes a main body portion 731, a first contact portion 732 for making electrical contact with a chip contact, and a second contact portion 733 for making electrical contact with the integrated circuit 71, the main body portion 731 of the conductive sheet 73 extends in a first direction, the first contact portion 732 extends from a first end of the main body portion 731, the conductive sheet 73 is integrally formed and has a first plane, the main body portion 731 and the first contact portion 732 both extend integrally on the first plane, and the second contact portion 733 also extends on the first plane. In the present embodiment, the first contact portion 732 is disposed on the protecting cover 13, and in other embodiments, the first contact portion 732 may be disposed on the first sidewall 11. Further, the cover 13 or the first sidewall 11 is provided with a receiving frame (not numbered) for receiving the first contact portion 732, so as to ensure effective contact between the first contact portion 732 and the chip contact point. The second contact portion 733 extends from the second end of the main body portion 731 toward the integrated circuit 71 and is connected to the chip terminal 71a of the integrated circuit 71, wherein, in order to ensure stable contact between the second contact portion 733 and the chip terminal 71a, the second contact portion 733 may be provided as an elastic contact spring sheet, and elastically contacts with the chip terminal 71a through the elastic contact spring sheet.

As shown in fig. 11, the adaptor 73 further includes a fixing plate 74, the second contact portion 733 is fixed to the fixing plate 74, the second contact portion 733 is stably contacted with the chip terminal 71a of the integrated circuit 71, the fixing plate 74 is mounted on the support 72 and electrically connected to the second contact portion 733, and more specifically, the support 72 further includes a fixing protrusion 723, through holes 741 are respectively formed at both ends of the fixing plate 74 in a longitudinal direction (first direction), the fixing protrusion 723 is fitted and fixed to the through holes 741, a transfer contact is formed on the fixing plate 74, one end of the transfer contact is electrically connected to the second contact portion 733 through a conductive path of the fixing plate 74, and when the fixing plate 74 is mounted on the support 72, the other end of the transfer contact is electrically connected to the chip terminal 71a of the integrated circuit 71.

Third embodiment

As shown in fig. 12 to 14, the chip assembly 8 includes an integrated circuit 81 as a storage medium and a support frame 82 for supporting the integrated circuit 81. The supporting frame 82 is disposed on the first side wall 12 of the casing 1, in this embodiment, the supporting frame 82 extends from the bottom surface of the protecting cover 13, the supporting frame 82 and the protecting cover 13 are integrally formed, and in other alternative embodiments, the supporting frame 82 may be fixedly connected to the casing 1 or the protecting cover 13 by welding or the like, or detachably connected to the casing 1 or the protecting cover 13 by screws or the like. The supporting frame 82 includes a first supporting wall 821 and a second supporting wall 822 disposed at an interval, and a third supporting wall 823 connecting the first supporting wall 821 and the second supporting wall 822, wherein the first supporting wall 821, the second supporting wall 822, and the third supporting wall 823 extend in a first direction and are formed with a receiving groove 824 in the first direction, the receiving groove 824 is formed with an opening, and the integrated circuit 81 is mounted into the receiving groove 824 from the opening in the first direction. The first supporting wall 821 is provided with a first stopping portion 8211, the second supporting wall 822 is provided with a second stopping portion (not shown), and the first stopping portion 8211 and the second stopping portion stop the displacement of the integrated circuit 81 in the first direction to prevent the integrated circuit 81 from falling out of the accommodating groove 824. The supporting frame 82 further includes a shielding plate 825 spaced from the third supporting wall 823, the second supporting wall 822 connects the shielding plate 825 and the third supporting wall 823, the shielding plate 825 shields a part of an electrical contact surface of the chip terminal of the integrated circuit 81, a part of the chip terminal 81a is exposed outside the shielding plate 825 to be electrically connected to the chip contact point on the image forming apparatus, and the chip terminal 81a of the integrated circuit 81 is only partially exposed, so that the integrated circuit 81 is protected, the mounting size is reduced, and miniaturization of the developing cartridge 100 is facilitated.

The plurality of chip terminals 81a of the integrated circuit 81 are formed with electrical contact surfaces for electrical contact with chip contact points of the image forming apparatus, the developing cartridge 100 is mounted to the drum cartridge in the second direction, the electrical contact surfaces are formed with an angle with the second direction, the angle of the first angle ranges from 45 to 90 degrees, preferably 90 degrees, so that the electrical contact surfaces are formed to be flanked by the chip contact points of the image forming apparatus, thereby reducing a mounting space of the integrated circuit 81 and facilitating mounting and dismounting of the integrated circuit 81.

Fourth embodiment

As shown in fig. 15 to 17, the chip assembly 9 includes an integrated circuit 91 as a storage medium, a plurality of guide tabs 92, and a holder 93 for supporting the guide tabs. The integrated circuit 91 may store various information related to the developing cartridge 100, and the integrated circuit 91 includes a plurality of chip terminals 91a, which are metal contacts electrically connectable with chip contacts on the image forming apparatus through the lead tab 923 so that the image forming apparatus can read and write information from the integrated circuit 91. The fixing frame 93 is disposed on the first sidewall 12 of the casing 1, optionally, the fixing frame 93 extends from the bottom surface of the protecting cover 13, the fixing frame 93 and the protecting cover 13 are integrally formed, in this embodiment, the fixing frame 92 may be fixedly connected to the casing 1 or the protecting cover 13 by welding or the like, or detachably connected to the casing 1 or the protecting cover 13 by screws or the like.

As shown in fig. 19, the fixing frame 93 is made of plastic of an insulating material, the fixing frame 93 is provided with a plurality of fixing grooves 931 and a plurality of fixing protrusions 932, the guide tabs 92 are correspondingly installed in the fixing grooves 931, the fixing frame is provided with a plurality of partition walls 933 in an array, the fixing grooves 931 are formed between every two adjacent partition walls 933, the fixing protrusions 932 are integrally formed above each partition wall 933, and the bottom surfaces of the fixing grooves 931 are concavely provided with connecting holes 934. The guide tab 92 includes a fixing part 921, a third contact part 922 extending from a bottom surface of the fixing part 921, and a fourth contact part 923 extending from one end of the fixing part 921, the fixing part 921 of the guide tab 92 is disposed and fixed in the fixing groove 931, the third contact portion 922 is located in the connection hole 934 and electrically connected to the integrated circuit 91 through a wire harness or a conductive sheet, the fourth contact portion 923 is exposed outside the fixing frame 93, so as to make electrical connection with the chip contact points on the image forming apparatus, in the present embodiment, the fourth contact portion 923 is formed with a land plane, a second included angle α is formed between the conductive plane and the fixing portion, wherein the extending direction of the fixing portion 921 is substantially the second direction, that is, the fourth contact portion 923 forms a second included angle α with the second direction, wherein the second included angle α is in a range of 45 to 90 degrees, preferably 90 degrees, so that the fourth contact portion 923 and the chip contact point form a side joint. The mounting size is reduced, which is advantageous in miniaturization of the developing cartridge 100.

As shown in fig. 16 and 18, further, the integrated circuit 91 in the present embodiment is disposed on the first side wall 11 of the casing 1 in a hidden manner, so that the integrated circuit is effectively protected, specifically, the integrated circuit 91 has a plurality of chip terminals 91a, the chip terminals 91a are electrically connected to the guide tabs 92 through wire harnesses, the plurality of chip terminals 91a form an electrical contact surface, the integrated circuit is close to the rear end (the end far from the developing roller) of the developing cartridge 100 in the second direction, and in the extending direction of the electrical contact surface, there is no overlapped portion between the integrated circuit 91 and the gear train 5, and the fixing frame 93 is close to the front end of the developing cartridge 100 in the second direction, so that the installation space of the first side wall 11 is reasonably utilized, and the miniaturization of the developing cartridge 100 is facilitated.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A developing cartridge detachably mountable to an image forming apparatus having a chip contact point and a detecting unit, comprising:

a developing roller rotatable about an axis extending in an axial direction;

characterized in that, still include the chip subassembly, the chip subassembly includes:

an integrated circuit;

2. The developing cartridge according to claim 1, further comprising a supporting member provided on a bottom surface of the casing, the supporting member being provided between the first side wall and the second side wall, the bottom surface of the casing being provided with a plurality of paper guide ribs, the supporting member being provided between adjacent two of the paper guide ribs.

3. A developing cartridge according to claim 2, wherein said supporting member includes a pair of supporting side walls and a plurality of supporting ribs extending from inside of said supporting side walls, said plurality of supporting ribs supporting a bottom surface of said integrated circuit so that chip terminals of said integrated circuit are exposed to said supporting member.

4. A developing cartridge according to claim 2, wherein said adaptor includes a first adaptor plate, a second adaptor plate, and a guide portion connected between said first adaptor plate and said second adaptor plate, said first adaptor plate being disposed adjacent to said first side wall, said second adaptor plate being disposed on said support member.

5. The developing cartridge according to claim 4, further comprising a cover covering at least a part of the input gear, the cover being provided with a bracket formed with an accommodating portion in which the first relay plate is placed when the first relay plate is mounted to the bracket, and a retaining portion that catches the first relay plate.

6. The developing cartridge according to claim 4, wherein the first relay plate is provided with a plurality of conductive probes electrically connected to the conductive portions through the first relay plate, and one ends of the conductive probes penetrate and protrude from a surface of the first relay plate to be electrically connected to the chip contact points.

7. The developing cartridge according to claim 4, wherein the adaptor includes a plurality of conductive sheets, each of the conductive sheets including a main body portion, a first contact portion for making electrical contact with the chip contact point, and a second contact portion for making electrical contact with the integrated circuit, the main body portion extending in the axial direction.

8. The developer cartridge according to claim 1, wherein the chip assembly has electrical contact surfaces which are electrically connected to the chip contact points; the electrical contact surface forms a first included angle with a mounting direction of the developing cartridge, and an angle range of the first included angle is 45 degrees to 90 degrees.

9. A developing cartridge according to claim 1, wherein said adaptor includes a guide tab, said guide tab including a fixing portion, a third contact portion extending from a bottom surface of said fixing portion, said third contact portion being electrically connected to the integrated circuit, and a fourth contact portion extending from one end of said fixing portion, said fourth contact portion being in contact with said chip contact point to form an electrical connection.

10. The developing cartridge according to claim 9, wherein the fourth contact portion and the fixing portion form a second angle in an angle range of 45 degrees to 90 degrees.