Developing cartridge

Abstract

The invention relates to the technical field of printing equipment, and provides a developing box, which is detachably mounted on an image forming device, and comprises a shell, a developing box, a driving device, a driving device and a driving device, and is characterized in that the shell is internally provided with a storage cavity for storing toner and an outlet for conveying the toner to the outside; the developing roller is arranged in the shell and is positioned on the inner side of the outlet; the stirring component is arranged in the storage cavity and used for stirring the toner in the storage cavity; and the powder dispersing component is arranged in the shell and comprises a movably arranged powder dispersing execution part, the powder dispersing execution part is provided with a powder dispersing surface used for being in contact with the toner in the storage cavity, and the powder dispersing surface decomposes the toner which is in contact with the powder dispersing surface and is gathered together along with the movement of the powder dispersing execution part. The developing box provided by the invention can solve the problem of toner caking in the developing unit.

Description

Technical Field

[0001] The present invention relates to the technical field of printing equipment, and in particular to a developing box. Background Art

[0002] Electronic image forming devices such as printers are commonly used electronic devices in offices. Existing electronic image forming devices use lasers to achieve the imaging process, and usually include a main body and a laser scanning unit and a developing unit arranged in the main body. The developing unit contains a photosensitive element, a developing element and a storage cavity. After the photosensitive element carries an electric charge, the laser emitted by the laser scanning unit forms an electrostatic latent image on the surface of the photosensitive element. The developing element transfers the colorant in the storage cavity to the surface of the photosensitive element to form an image, and the image is subsequently transferred to the printing medium.

[0003] The quality of imaging is closely related to the toner stored in the developing unit. When the toner is affected by environmental factors, especially when the toner forms lumps inside the developing unit due to poor drying conditions, the agglomerated toner will be transferred to the photosensitive unit to form an image, forming black spots on the print medium, or it will be restricted in the storage chamber by the cleaning components on the developing unit, resulting in waste of toner. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide a developing box for solving the problem of toner agglomeration inside a developing unit.

[0005] The present invention provides a developing box, which can be detachably installed on an image forming device, comprising: a shell, wherein a storage cavity for storing colorant and an outlet for conveying the colorant to the outside are provided in the shell; a developing roller, which is arranged in the shell and located on the inner side of the outlet; a stirring member, which is arranged in the storage cavity and is used to stir the colorant in the storage cavity; and a loose powder member, which is arranged in the shell and comprises a movably arranged loose powder actuator, wherein the loose powder actuator has a loose powder surface for contacting the colorant in the storage cavity, and the loose powder surface decomposes the aggregated colorant in contact with the loose powder actuator as the loose powder actuator moves.

[0006] According to the developing box provided by the embodiment of the present invention, the powder actuator is used to contact the colorant in the storage chamber to disperse the aggregated colorant, thereby preventing the colorants from agglomerating with each other and affecting the colorant supply process, and further affecting the imaging quality.

[0007] In a preferred embodiment of the present invention, the powder loosening component includes a first powder loosening component, the first powder loosening component includes a first actuator rotatably disposed on the housing, the first actuator having at least one eccentric portion deviating from the axis of the first actuator and extending along the axial direction.

[0008] In a preferred embodiment of the present invention, a conveying path for transmitting the colorant is provided in the housing, the developing roller is provided at a downstream position of the conveying path, the stirring member and the first actuator are provided upstream of the developing roller and the first actuator is located at a more downstream position on the conveying path than the stirring member.

[0009] In a preferred embodiment of the present invention, a limiting port is provided on one side of the storage chamber close to the outlet and is arranged axially along the first actuator, the first actuator is close to the limiting port and breaks up the colorant that is about to pass through the limiting port, and the developing roller is located downstream of the limiting port.

[0010] In a preferred embodiment of the present invention, the limiting port is provided with at least two branch ports along the axial direction, the first actuator has eccentric portions having the same number as the at least two branch ports, and each of the eccentric portions is respectively provided in the conveying direction of the conveying path of each of the branch ports.

[0011] In a preferred embodiment of the present invention, a driving member is further included, wherein the first actuator has a first rotation speed when driven by the driving member, and the stirring member has a second rotation speed when driven by the driving member, and the first rotation speed is greater than the second rotation speed.

[0012] In a preferred embodiment of the present invention, a conveying path for transmitting the colorant is provided in the housing, the developing roller is provided at a downstream position of the conveying path, the stirring member and the second actuator are provided upstream of the developing roller and the second actuator is located at a more upstream position on the conveying path than the stirring member.

[0013] In a preferred embodiment of the present invention, the storage chamber includes a first chamber and a second chamber connected to the first chamber, the second actuator is located in the first chamber, the stirring member is located in the second chamber, and the outlet is close to the second chamber; The bottom of the first cavity is located above the bottom of the second cavity in the direction of gravity, and a connecting passage not lower than the bottom is provided between the first cavity and the second cavity; The connecting channel comprises a first channel and a second channel arranged at different positions in the width direction of the second cavity, the first channel has a first opening on the first cavity, the second channel has a second opening on the second cavity, and the second actuator is located between the first opening and the second opening; The first channel and the second channel are arranged obliquely, the second cavity connects the lower end of the first channel and the lower end of the second channel, and the first cavity connects the higher end of the first channel and the higher end of the second channel.

[0014] In a preferred embodiment of the present invention, the second actuator is provided with a first spiral portion and a second spiral portion having a rotation direction opposite to that of the first spiral portion along its axial direction. When the second actuator rotates along a third direction, the first spiral portion pushes the colorant close to the second actuator to the first opening, and the second spiral portion pushes the colorant close to the second actuator to the second opening.

[0015] In a preferred embodiment of the present invention, a driving member is further included, and the driving member includes at least the following two driving states: driving the stirring member to rotate along the first direction and driving the second actuator to rotate along the third direction; driving the stirring member to rotate along a second direction and driving the second actuator to rotate along a fourth direction, When the stirring member rotates along the second direction, a pushing force is provided to transport the colorant near the first channel and the second channel to the first cavity; when the second actuator rotates along the fourth direction, the first spiral portion pushes the colorant near the first opening and the second spiral portion pushes the colorant near the second opening to the middle position of the second actuator at the same time.

[0016] Other features and advantages of the invention will be described in the following description, and partly become apparent from the description, or understood by implementing the technical solution of the invention. The purpose and other advantages of the invention can be achieved and obtained by the structures and / or processes specifically pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of an image forming device is provided for an embodiment of the present invention;

[0018] Figure 2 A schematic structural diagram of a developing box is provided for an embodiment of the present invention;

[0019] Figure 3 for Figure 2 Schematic diagram of the partial structure of the developer box provided Figure 1 ;

[0020] Figure 4 for Figure 3 A local enlarged schematic diagram of the middle A;

[0021] Figure 5 for Figure 2 A schematic diagram of the structure of the first actuator provided;

[0022] Figure 6 for Figure 2 Schematic diagram of the partial structure of the developer box provided Figure 2 ;

[0023] Figure 7 for Figure 2 Schematic diagram of the partial structure of the developer box provided Figure 3 ;

[0024] Figure 8 A schematic diagram of the internal structure of a developing box is provided for one embodiment of the present invention;

[0025] Fig. 9 A schematic diagram of the internal structure of a developing cartridge in a first driving state is provided for another embodiment of the present invention;

[0026] Fig.10 A schematic diagram of the internal structure of a developing cartridge in a second driving state is provided for another embodiment of the present invention;

[0027] Fig.11 A schematic diagram of the internal structure of a developing box is provided for another embodiment of the present invention;

[0028] Fig.12 A schematic diagram of the structure of a second actuator provided in one embodiment of the present invention;

[0029] Fig.13 A schematic structural diagram of a second actuator provided in another embodiment of the present invention.

[0030] Description of Figure Numbers: 100 main body, 101 paper box, 102 conveying assembly, 103 transfer assembly, 104 developing assembly, 105 scanning assembly, 106 fixing assembly, 107 discharge assembly; 200 housing, 210 outlet, 220 arc surface, 230 restriction port, 231 branch port; 300 developing roller; 400 a stirring member, 410 a stirring blade, 420 a stirring shaft; 500 storage cavity, 510 first cavity, 520 second cavity, 521 inclined surface; 610 second actuator, 611 rotating shaft, 612 flange, 613 first spiral portion, 614 second spiral portion, 620 first actuator, 621 eccentric portion; 700 connecting channel, 710 first channel, 711 first opening, 720 second channel, 721 second opening; 800 driving member, 810 first powder dispersing gear, 820 stirring gear, 830 driving force receiving gear, 840 second powder dispersing gear; 900 Toner conveying component. DETAILED DESCRIPTION

[0031] The following will describe the implementation methods of the present invention in detail in combination with the accompanying drawings and embodiments, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. It should be noted that these specific descriptions are only for ordinary technicians in this field to understand the present invention more easily and clearly, rather than a restrictive interpretation of the present invention; for example, the first and second mentioned in the embodiments of the present invention do not constitute a limitation thereto, but are only for expressing the serial numbers of multiple identical or similar devices and mechanisms. Ordinary technicians in this field can also readjust these serial numbers for the convenience of expression or in the process of arranging technical solutions; and alternative solutions are described for some mechanisms in different embodiments, and these alternatives can also be applied to other identical or similar devices and mechanisms; and as long as there is no conflict, the various embodiments in the present invention and the various features in each embodiment can be combined with each other, and the technical solutions formed are all within the protection scope of the present invention.

[0032] The technical solution of the present invention is described in detail below through the accompanying drawings and specific embodiments.

[0033] like Figure 1 As shown, first, the image forming device used in the developing box in the embodiment of the present invention is described. The image forming device includes a body 100 and a paper box 101, a conveying assembly 102, a developing assembly 104, a transfer assembly 103, a fixing assembly 106, a discharge assembly 107 and a scanning assembly 105 arranged in the body 100. The paper box 101 stores printing media such as paper that can be transferred by an image. The body 100 has a printing medium transmission path. The conveying assembly 102 is used to transmit the printing medium in the printing medium transmission path. The printing medium in the paper box 101 is transmitted to the transfer assembly 103 through the printing medium transmission path. After the developing assembly 104 transfers the image to the transfer assembly 103, the transfer assembly 103 further transfers the image to the printing medium. The printing medium is then transmitted to the fixing assembly 106. The fixing assembly 106 fixes the image on the printing medium by heating or other means. The fixed printing medium is discharged to the outside of the body 100 by the discharge assembly 107.

[0034] Among them, the scanning component 105 includes a light source and an optical component. The light path of the light beam emitted by the light source is transferred by the optical component and irradiated on the photosensitive member of the developing component 104. The developing component 104 includes a developing roller 300, a photosensitive member and a charging roller. After the charging roller causes the surface of the photosensitive member to carry an electric charge, the light beam emitted by the light source irradiates the surface of the photosensitive member, and an electrostatic latent image is formed on the surface of the photosensitive member. Subsequently, the developing roller 300 transfers the colorant to the photosensitive member, and an image is further formed on the surface of the photosensitive member, and the image is transferred to the transfer component 103. The transfer component 103 transfers the image to the printing medium, forming an imaging process.

[0035] Next, the developing cartridge in the embodiment of the present invention is described, which can be detachably installed in the image forming device. Figures 2 to 13 The developing box includes a housing 200, a developing roller 300 and a stirring member 400. The housing 200 is provided with a storage chamber 500 and an outlet 210. The storage chamber 500 stores toner, and the toner is transported to the outside of the storage chamber 500 through the outlet 210. The developing roller 300 is rotatably arranged in the housing 200 and arranged at an inner position close to the outlet 210. The developing roller 300 carries the toner in the storage chamber 500 during the rotation process, forms a toner layer on its surface, and transfers the toner to the photosensitive member by contacting the surface of the photosensitive member. The stirring member 400 is arranged in the storage chamber 500, and is used to stir the toner in the storage chamber 500 to make it uniform, and further transfer the toner to a position close to the developing roller 300.

[0036] In the prior art, the dry environment inside the storage chamber 500 may be destroyed due to the entry of external moisture, causing the colorants to stick to each other and form agglomerates, or after the developer box has been used for a period of time, the friction between the colorant and the outer shell 200 or other parts causes the colorant to carry an electric charge or a charge opposite to the original charge, causing the charged colorant and the uncharged or oppositely charged colorant to attract each other and stick to each other, forming agglomerates, which is not conducive to the imaging process. For example, smaller agglomerates may be transferred to the photosensitive member through the developing roller 300 and form a part of the image. In this way, in the subsequent transfer process, spots that do not exist in the original image will appear in the image on the printing medium, or larger agglomerates will be scraped off by the cleaning scraper on the outlet 210 and cannot be output from the outlet 210. Finally, they still exist in the developer box after the developer box is exhausted, causing waste. At the same time, the agglomerates may gradually attract other colorants after they are formed, causing the agglomerates to roll larger and larger. Therefore, it is necessary to deal with the agglomerates in time and break them up to adapt to the supply status of the colorant.

[0037] Based on this, the developing box in the embodiment of the present invention also includes a loose powder component, which is arranged in the outer shell 200 and includes a loose powder actuator. The loose powder actuator is used to contact the colorant in the storage chamber 500, and has a loose powder surface in contact with the colorant. The loose powder surface decomposes the aggregated colorant in contact with the loose powder actuator as the loose powder actuator moves, and the colorant blocks are disbanded by friction or pressure, and the colorant is broken up and reformed into powder, thereby solving the problem of block colorant formed inside the developing box.

[0038] See also Figures 3 to 5 The powder dispersing member includes a first powder dispersing member, and the first powder dispersing member includes a first actuator 620. The first actuator 620 is rotatably disposed on the housing 200. The first actuator 620 has at least one eccentric portion 621 that deviates from the axis of the first actuator 620 and extends along the axis direction. When the first actuator 620 rotates, the eccentric portion 621 forms a revolution track around the axis direction, and its powder dispersing surface is the contact surface of the eccentric portion 621 that is used to contact the toner under the revolution track. Under this track, the toner passing through the first actuator 620 will be continuously dispersed, thereby solving the problem of toner agglomeration. Specifically, the eccentric portion 621 has a first powder dispersing position and a second powder dispersing position on a plane perpendicular to the transmission direction of the toner in the conveying path. The first powder dispersing position and the second powder dispersing position form a powder dispersing range of the eccentric portion 621 to the toner on the conveying path, so that the toner passing through the powder dispersing range will be touched by the eccentric portion 621 and dispersed. In addition, within the loose powder range, especially when the space near the first actuator is full of colorant, the first actuator in the revolution state will continue to move between the compression position and the distance position approaching and moving away from the adjacent side wall, and thus the block-shaped colorant passing between the first actuator and the adjacent side wall will be continuously broken up to eliminate the agglomerate structure on the conveying path.

[0039] Furthermore, a conveying path for conveying toner is provided in the housing 200, the developing roller 300 is provided at a downstream position of the conveying path, the stirring member 400 and the first actuator 620 are provided upstream of the developing roller 300, and the first actuator 620 is provided at a more downstream position on the conveying path than the stirring member 400. The first actuator 620 has a relatively small range of scattering, and the toner needs to be kept in a dry state and the volume of the toner after agglomeration is relatively small, so the powder scattering range of the eccentric part 621 is also relatively small. Usually, the distance between the eccentric part 621 and the axis of the first actuator 620 is not greater than 3 mm, so that the revolution speed of the eccentric part 621 around the axis is relatively fast, so that the toner can be quickly scattered. The first actuator 620 is provided downstream of the stirring member 400 and upstream of the developing roller 300 to ensure that the toner is not agglomerated before being conveyed to the developing roller 300, so as to avoid affecting the imaging quality.

[0040] Continue reading Figure 4 , a limiting opening 230 is provided on the side of the storage chamber 500 near the outlet along the axial direction of the first actuator 620, the first actuator 620 is close to the limiting opening 230 and is intended to pass through the limiting opening 230, and the developing roller 300 is located at the downstream position of the limiting opening 230, so that the toner reaching the developing roller 300 is the toner after being dispersed. Among them, the limiting opening 230 has a limiting effect on the conveying amount of the toner, so that the toner will gather at the position of the limiting opening 230, so that the first actuator 620 can better play a more powder-dispersing role, and the width of the limiting opening 230 perpendicular to the axial direction corresponds to the revolution diameter of the eccentric part 621, so that the first actuator 620 can play a maximum powder-dispersing role, for example, the width of the limiting opening 230 is not more than twice the revolution diameter of the eccentric part 621, so that most of the toner passing through the limiting opening 230 will be contacted and dispersed by the first actuator 620.

[0041] In an embodiment regarding the limiting opening 230, a trumpet-shaped contraction opening is formed from the storage chamber 500 to the limiting opening 230. At this time, the colorant will gather at the limiting opening 230, and the first actuator 620 is close to the limiting opening 230 and is located on the inner side of the limiting opening 230. After the colorant is narrowed by the limiting opening 230 and is output from the limiting opening 230, it will be dispersed by the stirring of the eccentric portion 621.

[0042] In one embodiment, the limiting opening 230 is provided with at least two branch openings 231 along the axial direction, and the first actuator 620 has the same number of eccentric portions 621 as the at least two branch openings 231, and each eccentric portion 621 is respectively provided in the conveying direction of the conveying path of each branch opening 231. The limiting opening 230 is further divided into a plurality of branch openings 231 along the axial direction, which can enhance the limiting effect on the toner, so that the toner can effectively pass through the first actuator 620, and the first actuator 620 is provided with the same number of eccentric portions 621 corresponding to the branch openings 231, and the toner on each branch opening 231 is fully dispersed in a one-to-one correspondence manner.

[0043] In a preferred embodiment, the axial length of each eccentric portion 621 is the same as or close to the axial length of the corresponding limiting opening 230, so that the eccentric portion 621 contacts the toner passing through the limiting opening 230 as much as possible, preventing the missed agglomerates from passing through the limiting opening 230. When the axial lengths of the eccentric portion 621 and the corresponding limiting opening 230 are close, the close interval is preferably not less than 1 mm.

[0044] In another embodiment, the developing box further comprises a driving member, the first actuator 620 has a first rotation speed when driven by the driving member, the stirring member 400 has a second rotation speed when driven by the driving member, and the first rotation speed is greater than the second rotation speed. In this configuration, since the first distance between the eccentric portion 621 and the axis where it is located is much smaller than the second distance between the farthest end of the stirring blade 410 and the axis where it is located, the deflection speed of the eccentric portion 621 in the first actuator 620 is greater than the stirring speed of the stirring member 400, and the stirring speed of the stirring member 400 corresponds to the supply speed of the developing roller 300, so while the toner is continuously pushed to the developing roller 300, the eccentric portion 621 quickly breaks up the pushed toner by fast rotation, so as to avoid missing agglomerates in the toner transmitted to the developing roller 300.

[0045] In addition, the developing box further includes a second powder dispersing member, and the second powder dispersing member includes a second actuator 610. Fig. 9 The second actuator 610 includes a rotating shaft 611 and a spiral convex edge arranged on the rotating shaft 611. During the rotation of the rotating shaft 611 carrying the spiral convex edge, when the colorant approaches the second actuator 610, the colorant contacts the spiral surface of the spiral convex edge, and will be gradually dispersed evenly by continuous rolling and friction on the surface of the spiral convex edge. In particular, when the colorant that forms clumps contacts the spiral convex edge, the spiral convex edge and the clumps form a relative motion, and the colorant on the outer edge contacts the spiral convex edge and detaches from the clumps after friction occurs. Therefore, the second actuator 610 has a breaking up effect on the clumps of the colorant.

[0046] In another embodiment, the second actuator 610 may also be other scattered structures, see Fig.13 For example, it includes a rotating shaft 611 and flanges 612 arranged at intervals on the rotating shaft 611, and the flanges 612 adjacent to each other in the radial direction of the rotating shaft 611 are staggered. In this way, since the adjustment agent will continue to move downward due to the influence of gravity, after the rotating shaft 611 rotates, the agglomerated toner has a tendency to move toward due to gravity. The flanges 612 are staggered in the radial direction of the rotating shaft 611 and will continue to stagger in the direction of the toner gravity. Therefore, the agglomerated toner will be constantly touched and rubbed by the flanges 612 that are not in the same gravity direction, thereby causing the agglomerates to be continuously worn until they are restored to powder. It can also be further that when the flanges 612 are staggered in the radial direction, they are also spiral, and the spiral direction of the spiral is biased toward one end or other position of the rotating shaft 611, which has a certain pushing effect on the toner while breaking up the agglomerated toner.

[0047] In one embodiment, see Figures 6 to 11A conveying path for transmitting colorant is provided in the housing 200, the developing roller 300 is arranged at a downstream position of the conveying path, the stirring member 400 and the second actuator 610 are arranged upstream of the developing roller 300, and the second actuator 610 is at a more upstream position on the conveying path than the stirring member 400, that is, on the conveying path, the second actuator 610, the stirring member 400 and the developing roller 300 are arranged in sequence, and the second actuator 610 is arranged in the storage cavity 500 to fully disperse the colorant inside the storage cavity 500, and the fully dispersed colorant is conveyed to the stirring member 400 by the second actuator 610 or due to gravity, etc., and the stirring member 400 stirs the colorant evenly to make the colorant evenly distributed in the storage cavity 500, and pushes the colorant to the developing roller 300, so that it can be conveyed to the outside of the outlet 210 by the developing roller 300.

[0048] Continue reading Fig. 9 , wherein, when observing the interior of the housing 200 along the axial direction of the stirring member 400, the space occupied by the stirring member 400 inside the storage chamber 500 is smaller than the space occupied within the action range of the second actuator 610, and viewed in the X direction perpendicular to the axial direction and perpendicular to the gravity direction, the stirring action space of the stirring member 400 is a, and the storage chamber 500 has a loose powder action space a on the side of the storage chamber 500 that is away from the developing roller 300 and is not outside the stirring action space b, and the volume of the loose powder action space is larger than the volume of the stirring action space, and the second loose powder member is arranged in the middle position of the loose powder action space or close to the action position of the stirring member 400, thereby when the storage chamber 500 is fully loaded, the amount of toner stored in the loose powder action space is greater than the amount of toner stored in the stirring action space, and under this structure, most of the toner in the storage chamber 500 can be contacted by the second actuator 610 and broken into powder.

[0049] In this embodiment, the stirring member 400 includes a stirring shaft 420 and a stirring blade 410 arranged on the stirring shaft 420. When the stirring shaft 420 rotates along the first direction, the stirring blade 410 will stir the colorant located in the stirring action space. The colorant located at the bottom of the stirring shaft 420 will be pushed to a position close to the developing roller 300 by the stirring blade 410 during the stirring process. In the full load state, there will still be colorant located above the stirring shaft 420, or in the non-full load state, a small part will be carried to the top of the stirring shaft 420 due to the stirring action of the stirring blade 410, and further returned to the loose powder action space outside the stirring action space. Therefore, the second actuator 610 will continue to perform the breaking up effect on the returned part, and when the loose powder action space is larger than the stirring action space, the second actuator 610 can perform the loose powder operation on most of the colorant in the storage chamber 500.

[0050] Preferably, the loose powder action space is twice or larger than the stirring action space, the second actuator 610 is located at the bottom of the loose powder action space, and the portion of the loose powder action space that is further downstream than the second actuator 610 in the conveying path has an inclined surface 521, and the inclined surface 521 will continuously guide the colorant to move toward the second actuator 610 under the action of gravity, so that the colorant in the loose powder action space can all pass through the second actuator 610. Since the loose powder action space is twice or larger than the stirring action space, the stirring member 400 will carry part of the colorant in the stirring action space back to the loose powder action space. Under this structure, the second actuator 610 can fully loosen most of the colorant in the storage chamber 500 to avoid missing colorant that becomes agglomerated.

[0051] See also Figure 8 The storage chamber 500 includes a first chamber 510 and a second chamber 520 connected to the first chamber 510. The second actuator 610 is located in the first chamber 510, the stirring member 400 is located in the second chamber 520, and the outlet 210 is close to the second chamber 520. This structure separates the powder action space of the second actuator 610 in the storage chamber 500 from the stirring action space of the stirring member 400 to avoid mutual interference between the two. The structural design of the first chamber 510 and the second chamber 520 is used to increase the toner storage capacity of the developer cartridge, as described in detail below. When the storage space of the storage chamber 500 needs to be increased, the space occupied by the stirring structure is limited, so there will be storage space that cannot be covered by the stirring structure. Therefore, in this part of the storage space, because the toner consumption rate is slow, if the toner cannot be obtained by the stirring member 400 for a long time, the developer cartridge will be damaged. During stirring, the colorant that is not within the coverage of the stirring member 400 will form clumps due to changes in the internal environment of the developer box. The agglomerated colorant cannot be broken up by the stirring member 400, which will cause imaging problems. Therefore, a first cavity 510 is independently provided to separately store the colorant that is outside the stirring range of the stirring member 400, and the second actuator 610 is used to maintain the powder state of the colorant in the first cavity 510, so as to prevent the second actuator 610 from interfering with the stirring member 400 and avoid the agglomeration of the colorant caused by long-term storage in the first cavity 510.

[0052] In a specific embodiment, the bottom of the first cavity 510 is located above the bottom of the second cavity 520 in the direction of gravity, and there is a connecting channel 700 between the first cavity 510 and the second cavity 520 that is not lower than the bottom. The connecting channel 700 is used to separate the first cavity 510 and the second cavity 520 while allowing colorants to communicate with each other.

[0053] See also Figure 6 and Figure 7The connecting channel 700 includes a first channel 710 and a second channel 720 which are arranged at different positions in the width direction of the first cavity 510, the first channel 710 has a first opening 711 on the first cavity 510, the second channel 720 has a second opening 721 on the second cavity 520, and the second actuator 610 is located between the first opening 711 and the second opening 721, wherein the width direction is the same as or parallel to the axial direction of the second actuator 610. The first cavity 510 is arranged at a higher position than the second cavity 520, so that the colorant on the first cavity 510 can move toward the second cavity 520 under the action of gravity, and is further transported to the outside of the developing box by the stirring member 400 and the developing roller 300, and the second actuator 610 is located between the first opening 711 and the second opening 721, which can prevent the second actuator 610 from affecting the transfer process of the colorant from the first cavity 510 to the second cavity 520 during the powder loosening execution process, because the second actuator 610 may interfere with the movement of the colorant during the action process. This structure is used to avoid the interference problem. For example, when the second actuator 610 adopts a spiral convex edge, the colorant may stay on the spiral convex edge and have a certain hindering effect on the colorant entering the first opening 711 or the second opening 721. In addition, the second actuator 610 is arranged between the first opening 711 and the second opening 721 to ensure that the maximum powder loosening effect is achieved while avoiding hindering the transfer of the colorant from the first cavity 510 to the second cavity 520.

[0054] The first channel 710 and the second channel 720 are arranged at an angle, the second cavity 520 connects the lower end of the first channel 710 and the lower end of the second channel 720, and the first cavity 510 connects the upper end of the first channel 710 and the upper end of the second channel 720. The toner in the first cavity 510 enters the first channel 710 through the first opening 711 in the first channel 710, and enters the second channel 720 through the second opening 721 in the second channel 720. Due to the inclined arrangement of the first channel 710 and the second channel 720, the toner automatically passes through the first channel 710 and the second channel 720 due to gravity and is transferred to the second cavity 520, and is contacted by the stirring member 400. Specifically, see Figure 8, the bottom of the first cavity 510 except for the second actuator 610 is an inclined surface 521 inclined toward the second cavity 520, that is, the bottom surface is in the shape of an inclined surface 521 in the extension direction away from the first channel 710 and the second channel 720, and the inclined surface 521 covers the entire first cavity 510 in the gravity direction, so that all the colorants in the first cavity 510 except the colorants in the process of being acted upon by the second actuator 610 can be transferred to the first channel 710 and the second channel 720 due to gravity, avoiding the residual area of ​​the colorant in the first cavity 510 that cannot be transferred along the transmission path. While solving the problem in the prior art that a large-capacity colorant storage cavity is prone to retain a large amount of colorant or additionally set up other transmission components, resulting in increased costs, the second actuator 610 cooperates with the powder loosening operation, reduces the setting of the colorant conveying mechanism, and prevents interference or interference with the second actuator 610, thereby increasing the utilization rate of the large-capacity storage cavity 500 and reducing costs.

[0055] The second actuator 610 of this embodiment is described below. Fig.12 , the second actuator 610 has a first pushing portion and a second pushing portion arranged in the axial direction thereof, the first pushing portion is close to the first opening 711, and the second pushing portion is close to the second opening 721. The stirring member 400 can rotate in the first direction and when rotating in the first direction, pushes the toner located at the bottom of the stirring member 400 and close to the first channel 710 and the second channel 720 to the developing roller 300. The pushing directions of the first pushing portion and the second pushing portion are different. When or after the second actuator 610 is scattered, the first pushing portion and the second pushing portion push the toner to the first opening 711 and the second opening 721, respectively, thereby avoiding the accumulation of toner on the second actuator 610 when the second actuator 610 is scattered. For example, Figure 3 In the embodiment, the second actuator 610 is located between the first opening 711 and the second opening 721, and the second actuator 610 occupies two-thirds or more of the width of the first cavity 510 in the width direction of the first cavity 510, and is located at the bottom of the first cavity 510. Therefore, most of the colorant in the first cavity 510 will first reach the second actuator 610 at the bottom, and when or after the second actuator 610 scatters the colorant, it will use the first pushing part and the second pushing part to push the colorant away from the second actuator 610 and enter the first opening 711 and the second opening 721 respectively, forming a transmission path for the colorant in the first cavity 510, that is, after entering the second actuator 610, it is transmitted to the first opening 711 and the second opening 721 through the second actuator 610, effectively solving the problem of colorant residue in the first cavity 510 caused by adding the second powder scattering component.

[0056] In one embodiment, see Fig.12The second actuator 610 is provided with a first spiral portion 613 and a second spiral portion 614 which rotates in the opposite direction to the second spiral portion 614 along its axial direction. When the second actuator 610 rotates along the third direction, the first spiral portion 613 pushes the toner near the second actuator 610 to the first opening 711, and the second spiral portion 614 pushes the toner near the second actuator 610 to the second opening 721. The first spiral portion 613 and the second spiral portion 614 can be integrally formed with the rotating shaft 611 on the second actuator 610, and the first spiral portion 613 and the second spiral portion 614 are engaged in the axial direction. The second actuator 610 utilizes the powder dispersing and pushing action of the spiral portion during the spiral rotation process, so that the toner is dispersed and gradually pushed to the first opening 711 and the second opening 721 along the spiral pushing direction, thereby improving the powder dispersing and pushing efficiency.

[0057] In this embodiment, the driving member 800 is used to drive the stirring member 400 and the second actuator 610 to rotate, and the rotation can be driven simultaneously or selectively driven separately. In this extended embodiment, regardless of whether it is driven simultaneously or independently, the driving member 800 has at least two driving states for the stirring member 400 and the second actuator 610: First, see Fig. 9 , the driving member 800 drives the stirring member 400 to rotate in the first direction and drives the second actuator 610 to rotate in the third direction. As described above, when the stirring member 400 rotates in the first direction, it can stir the toner near the first channel 710 and the second channel 720 and transfer it to the developing roller 300, and when the second actuator 610 rotates in the third direction, it pushes the toner into the first opening 711 and the second opening 721 while performing the powder dispersing operation. In this case, the stirring member 400 and the second actuator 610 are driven simultaneously to adapt to the toner transportation process in the developing cartridge; Second, see Fig.10, the driving member 800 drives the stirring member 400 to rotate in the second direction and drives the second actuator 610 to rotate in the fourth direction. When the stirring member 400 rotates in the second direction, a pushing force is provided to transport the toner near the first channel 710 and the second channel 720 to the first cavity 510, so that the toner returns to the first cavity 510 so as to continue to be scattered. When the second actuator 610 rotates in the fourth direction, the first spiral portion 613 and the second spiral portion 614 transport the toner in the direction opposite to the original direction. When the first spiral portion 613 and the second spiral portion 614 receive the toner returned by the stirring member 400, the toner is transported to the middle of the second actuator 610 by the first spiral portion 613 and the second spiral portion 614 and is scattered. In the process of continuous rotation in this direction, the adjustment agent is continuously pushed to the middle of the second actuator 610 to achieve full dispersion of the toner in the first cavity 510.

[0058] Therefore, the second driving state can make the toner in the second cavity 520 return to the first cavity 510 and be re-dispersed by the spiral part, and the dispersing stroke is consistent with the original stroke, so as to achieve a sufficient dispersing effect. The reason for setting this driving state is as follows, for example, there is agglomerated toner that is omitted from being transferred to the second cavity 520 or when the image forming device is not used for a long time, there is aggregated toner in the second cavity 520, so that the driving member 800 executes the second driving state, so that the toner in the second cavity 520 is returned to the first cavity 510 for re-dispersal, and after re-dispersal, it switches to the first driving state and continues to return to the second cavity 520 along the original path. In addition, this process can be executed during the imaging process, such as the imaging preparation stage or the imaging end stage. After the driving component 800 is controlled to execute the first driving state for a first time, the colorant enters the second cavity 520. At this time, the driving component 800 is controlled to switch to execute the second driving state, and after the second time, the colorant is fully dispersed in the first cavity 510, and then it continues to switch back to the first driving state, thereby realizing the reciprocating exchange of the colorant between the first cavity 510 and the second cavity 520, thereby preventing the presence of residual lumps inside the storage cavity 500.

[0059] Continue reading Figure 8 , the bottom of the first cavity 510 is located above the top of the second cavity 520, and the bottom of the first cavity 510 forms a groove that gathers toward the middle, and the second actuator 610 is located in the middle of the bottom of the first cavity 510. Specifically, inclined surfaces inclined toward the middle are arranged on both sides of the groove, so that the toner close to the second actuator 610 will move toward the second actuator 610 and then be contacted by the second actuator 610, thereby improving the powder loosening effect.

[0060] In another embodiment, see Fig.11The first volume cavity 510 is arranged below the second volume cavity 520, that is, the bottom of the first volume cavity 510 is lower than the bottom of the second volume cavity 520, and the first channel 710 and the second channel 720 are both arranged obliquely, the lower end of the first channel 710 and the lower end of the second channel 720 are connected to the first volume cavity 510, and the higher end of the first channel 710 and the higher end of the second channel 720 are connected to the second volume cavity 520, and a toner conveying component 900 is arranged on one channel, and the toner conveying component 900 includes a first end and a second end, the first end is located in the first volume cavity 510 and at the bottom of the second actuator 610, and the second end is arranged so as to connect the channel with the second actuator 610. The colorant in the first cavity 510 can be transferred to the second cavity 520 by the colorant conveying component 900 through the channel, while the other channel is not provided with the colorant conveying component 900. Therefore, the colorant will enter the first cavity 510 from the second cavity 520 through the other channel and arrive at the second actuator 610. The pushing portion of the second actuator 610 conveys the colorant toward the colorant conveying component 900, and finally is pushed back to the second cavity 520 by the colorant conveying component 900, forming a colorant conveying cycle inside the storage cavity 500, and the second actuator 610 performs a powder loosening operation during the circulation process.

[0061] Specifically, the colorant conveying component 900 is arranged in the first channel 710, the second actuator 610 has a unidirectional third spiral portion, the second channel 720 is not provided with the colorant conveying component 900, the first end of the colorant conveying component 900 is located at the bottom of the third spiral portion, and the colorant in the second cavity 520 close to the second channel 720 enters the first cavity 510 due to gravity, is broken up by the second actuator 610 and conveyed from one end to the other end thereof, and the colorant conveying component 900 returns the broken up colorant to the second cavity 520, so that the cyclic breaking up process can be realized when there is sufficient toner in the storage cavity 500.

[0062] Furthermore, an arc surface 220 which is lower than the connecting opening thereof is provided between the bottom of the second cavity 520 and the first channel 710 and the second channel 720, and the bottom of the stirring blade 410 passes through the lowest part of the arc surface 220, so that when the toner in the second cavity 520 is insufficient, the toner no longer enters the second cavity 520 through the first channel 710 or the second channel 720, but gathers on the arc surface 220 and is pushed to the developing roller 300 by the stirring blade 410. Because when the toner is less, if the loose powder cycle is continued, it is possible that more toner will gather on one side of the stirring member 400 close to the channel for conveying toner from the first cavity 510, while less toner will exist on the other side, resulting in uneven toner transferred to the developing roller 300 by the stirring member 400. When the toner remaining amount is insufficient, the toner gathers on the arc surface 220 and is evenly arranged along the width direction under the action of the stirring member 400, thereby improving the toner utilization rate under this structure.

[0063] In some embodiments, see Figure 2 The driving member 800 includes a driving gear group arranged on one side of the housing 200, and the driving gear group includes a first loose powder gear 810, a second loose powder gear 840, and a driving force receiving gear 830 of a stirring gear 820. The first loose powder gear 810 is connected to the second actuator 610 and is used to drive the second actuator 610 to rotate. The second loose powder gear 840 is connected to the first actuator 620 and is used to drive the first actuator 620 to rotate. The stirring gear 820 is connected to the stirring member 400 and is used to drive the stirring member 400 to rotate. The driving force receiving gear 830 is directly or indirectly meshed with the first loose powder gear 810, the second loose powder gear 840 and the stirring gear 820. After receiving the driving force from the image forming device, the first loose powder gear 810, the second loose powder gear 840 and the stirring gear 820 are driven to rotate.

[0064] In addition, in some other embodiments, the second loose powder component can also be of the same structure as the first loose powder component, and can also achieve the loose powder effect, and can break up the colorant returned to the first cavity, and can achieve the same effect except for conveying the colorant in the first driving state and the second driving state.

[0065] In this embodiment, the second actuator 610 breaks up the toner in the storage chamber 500 to achieve full breaking up, and the first actuator 620 is arranged at a position about to reach the developing roller 300 to prevent missed agglomerates from being transferred to the developing roller 300 .

[0066] In addition, the first actuator 620 and the second actuator 610 implemented in the embodiment of the present invention are preferably made of a rigid material so that the loose powder surface in contact with the toner can provide sufficient rigidity to decompose the agglomerated toner.

[0067] Finally, it should be noted that the above description is only the best embodiment of the present invention and does not limit the present invention in any form. Any technician familiar with the art can make many possible changes and simple replacements to the technical solution of the present invention by using the above disclosed practices and technical contents without departing from the scope of the technical solution of the present invention, which all belong to the scope of protection of the technical solution of the present invention.

Claims

1. A developing cartridge, detachably mounted on an image forming device, characterized in that: include: A housing, wherein a storage cavity for storing toner and an outlet for conveying the toner to the outside are provided in the housing; A developing roller, disposed in the housing and located inside the outlet; a stirring member, disposed in the storage chamber and used for stirring the toner in the storage chamber; The loose powder component is arranged in the shell and includes a movably arranged loose powder actuator, wherein the loose powder actuator has a loose powder surface for contacting the colorant in the storage chamber, and the loose powder surface decomposes the aggregated colorant in contact with the loose powder actuator as the loose powder actuator moves.

2. The developing cartridge according to claim 1, characterized in that: The powder dispersing member includes a first powder dispersing member, and the first powder dispersing member includes a first actuator rotatably disposed on the housing, and the first actuator has at least one eccentric portion deviating from the axis of the first actuator and extending along the axis direction.

3. The developing cartridge according to claim 2, characterized in that: A conveying path for conveying the colorant is provided in the housing, the developing roller is provided at a downstream position of the conveying path, the stirring member and the first actuator are provided upstream of the developing roller and the first actuator is located at a more downstream position on the conveying path than the stirring member.

4. The developing cartridge according to claim 3, characterized in that: A limiting port is provided on one side of the storage chamber close to the outlet and is arranged along the axial direction of the first actuator. The first actuator is close to the limiting port and breaks up the colorant that will pass through the limiting port. The developing roller is located downstream of the limiting port.

5. The developing cartridge according to claim 4, characterized in that: The limiting opening is provided with at least two branch openings along the axial direction, the first actuator has eccentric portions having the same number as the at least two branch openings, and each eccentric portion is respectively provided in a corresponding direction of the conveying path of each branch opening.

6. The developing cartridge according to claim 5, characterized in that: The invention further comprises a driving member, wherein the first actuator has a first rotation speed when driven by the driving member, and the stirring member has a second rotation speed when driven by the driving member, and the first rotation speed is greater than the second rotation speed.

7. The developing cartridge according to claim 1, characterized in that: A conveying path for conveying the toner is provided in the housing, the developing roller is provided at a downstream position of the conveying path, the stirring member and the second actuator are provided upstream of the developing roller and the second actuator is located at a more upstream position on the conveying path than the stirring member.

8. The developing cartridge according to claim 7, wherein: The storage chamber includes a first chamber and a second chamber connected to the first chamber, the second actuator is located in the first chamber, the stirring member is located in the second chamber, and the outlet is close to the second chamber; The bottom of the first cavity is located above the bottom of the second cavity in the direction of gravity, and a connecting passage not lower than the bottom is provided between the first cavity and the second cavity; The connecting channel comprises a first channel and a second channel arranged at different positions in the width direction of the second cavity, the first channel has a first opening on the first cavity, the second channel has a second opening on the second cavity, and the second actuator is located between the first opening and the second opening; The first channel and the second channel are arranged obliquely, the second cavity connects the lower end of the first channel and the lower end of the second channel, and the first cavity connects the higher end of the first channel and the higher end of the second channel.

9. The developing cartridge according to claim 8, characterized in that: The second actuator is provided with a first spiral portion and a second spiral portion having a rotation direction opposite to that of the first spiral portion along its axial direction. When the second actuator rotates along a third direction, the first spiral portion pushes the colorant close to the second actuator to the first opening, and the second spiral portion pushes the colorant close to the second actuator to the second opening.

10. The developing cartridge according to claim 9, characterized in that: Also included is a driving member, wherein the driving member includes at least the following two driving states: driving the stirring member to rotate along the first direction and driving the second actuator to rotate along the third direction; driving the stirring member to rotate along a second direction and driving the second actuator to rotate along a fourth direction, When the stirring member rotates along the second direction, a pushing force is provided to transport the colorant near the first channel and the second channel to the first cavity; when the second actuator rotates along the fourth direction, the first spiral portion pushes the colorant near the first opening and the second spiral portion pushes the colorant near the second opening to the middle position of the second actuator at the same time.

Images