WO2015101086A1 - 处理盒及图像形成设备 - Google Patents

处理盒及图像形成设备 Download PDF

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Publication number
WO2015101086A1
WO2015101086A1 PCT/CN2014/089292 CN2014089292W WO2015101086A1 WO 2015101086 A1 WO2015101086 A1 WO 2015101086A1 CN 2014089292 W CN2014089292 W CN 2014089292W WO 2015101086 A1 WO2015101086 A1 WO 2015101086A1
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WO
WIPO (PCT)
Prior art keywords
powder
mounting
process cartridge
hole
cartridge according
Prior art date
Application number
PCT/CN2014/089292
Other languages
English (en)
French (fr)
Inventor
苏成杰
Original Assignee
珠海赛纳打印科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201420006428.2U external-priority patent/CN203773232U/zh
Priority claimed from CN201420006409.XU external-priority patent/CN203773227U/zh
Priority claimed from CN201410005326.3A external-priority patent/CN103760757B/zh
Application filed by 珠海赛纳打印科技股份有限公司 filed Critical 珠海赛纳打印科技股份有限公司
Publication of WO2015101086A1 publication Critical patent/WO2015101086A1/zh

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/18—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit
    • G03G21/1803—Arrangements or disposition of the complete process cartridge or parts thereof
    • G03G21/1814—Details of parts of process cartridge, e.g. for charging, transfer, cleaning, developing

Definitions

  • Embodiments of the present invention relate to a process cartridge and an image forming apparatus, and belong to the technical field of image forming apparatuses.
  • the process cartridge is an important component in an image forming apparatus for forming a toner image on paper.
  • the process cartridge includes components such as a photosensitive drum, a charging roller, a developing roller, a powder feeding roller, a powder bin, and a waste toner bin.
  • the assembly precision between the components also plays a key role, for example, the cooperation between the powder feeding roller and the developing roller, development The cooperation between the roller and the photosensitive drum, and the like.
  • the products on the market are limited by the technical and print quality, and it is difficult to delete the number of parts. Therefore, the structure is complicated, and there are many parts with mutual assembly relationship, which increases the assembly error of the product.
  • the invention provides a processing box and an image forming apparatus, which solves the technical problem that the structure of the existing processing box product is more complicated, and the installation process is numerous, resulting in high production efficiency and high cost.
  • the technical solution adopted by the present invention is:
  • a process cartridge includes a powder magazine on which a developing roller is mounted, and a housing portion for holding and mounting a shaft end of the developing roller is disposed on a casing of the powder container.
  • the nip portion includes an upper holding plate and a lower holding plate, the nip portion having a certain amount of elastic deformation that enables a shaft end of the developing roller to be positioned within the nip portion.
  • a boss for increasing the contact area between the clamping portion and the shaft end of the developing roller is provided.
  • Both ends of the housing of the powder silo are respectively provided with a clamping portion.
  • a powder discharging knife is mounted on the powder silo, and the powder discharging knife is fixed on the casing of the powder silo.
  • the shell of the powder silo comprises a powder silo upper shell and a powder silo lower shell
  • the powder silo upper shell comprises a top wall, two end walls and a side wall; the two ends of the top wall are respectively connected with the two end walls , the side wall and the powder silo
  • the long sides of the shell are connected, and the two ends of the side walls are respectively connected to the both end walls.
  • the side wall is provided with a flange portion, the flange portion is disposed in a front direction of the powder bin, and the flange portion is provided with a powder discharging knife positioning column and a powder discharging knife positioning hole for positioning the powder knife.
  • the powder knife is fixed by screws.
  • a powder feeding roller is mounted on the powder bin, and a mounting groove for mounting a shaft end of the powder feeding roller is disposed on a casing of the powder bin, and a side surface of the mounting groove is provided with a notch for inserting a shaft end of the powder feeding roller.
  • the inner side of the mounting groove is provided with a limiting structure for limiting the displacement of the shaft end of the powder feeding roller; the limiting structure is a limiting protrusion disposed at the slot of the mounting groove.
  • the housing of the powder silo is provided with a through hole for mounting the other axial end of the powder feeding roller; the through hole is an elliptical hole.
  • the utility model further includes a waste powder bin, wherein two ends of the shell of the waste toner silo are respectively provided with a mounting wall for mounting the drum shaft, the two mounting walls are arranged opposite to each other, and one of the two mounting walls is provided with one Install the shaft mounting hole for the drum shaft.
  • an end cap having a developing roller mounting hole for mounting the developing roller shaft end and a rotating shaft limiting hole for mounting the photosensitive drum rotating shaft.
  • a protrusion is disposed in the rotation limiting hole of the rotating shaft, and the rotating shaft can be rotated in the limiting hole of the rotating shaft after being inserted into the limiting hole of the rotating shaft until the rotation is stopped by the protrusion.
  • the powder cartridge housing and the waste toner cartridge housing are respectively provided with an end cap positioning post or an end cap positioning hole, and the inner side of the end cap is disposed corresponding to the end cap positioning post or the end cap positioning hole
  • the positioning hole is either a positioning post.
  • a predetermined position structure is disposed between the powder bin and the mounting surface of the waste toner box, and the predetermined position structure is a predetermined position post and a predetermined position hole corresponding to the predetermined position post.
  • the method further includes: an integrated chip mounted on the end cover; and a holding device for mounting the integrated chip; the holding device includes: a card slot for placing the integrated chip, for clamping a buckle of the integrated chip, and a stopper for preventing the buckle from being loosened; the card slot and the buckle are disposed on one of the housing and the end cover, the The movable member is correspondingly disposed on the other of the housing and the end cover, wherein the stopper is disposed on a rear side of the buckle with respect to the integrated chip to prevent the card
  • the buckle is elastically deformed toward its rear side.
  • the card slot and the buckle are disposed on one of the housing and the end cover, and the stopper is correspondingly disposed on the other of the housing and the end cover.
  • an electrical contact member mounted on the end cap; and a stepped through hole for mounting the electrical contact member.
  • the electrical contact member includes a base portion and an elastic deformation portion; when the base portion is disposed at the large hole end of the stepped through hole, the elastic deformation portion can abut against a stepped surface of the stepped through hole to limit the The base moves toward the housing.
  • the present invention also provides an image forming apparatus including a frame in which any one of the above process cartridges is detachably mounted.
  • the developing roller is directly mounted on the powder silo, the mounting precision of the developing roller and the powder silo is improved, and the use of a bracket or a bearing or the like is not required, which simplifies the structure of the product and improves the structure.
  • the production efficiency reduces the production cost of the product, and at the same time, the miniaturization of the product can be realized.
  • the powder discharging knife, the powder feeding roller and the developing roller are directly positioned on the powder silo, thereby reducing the components installed on each other, thereby controlling the superposition of the mounting errors, improving the powder discharging knife and developing
  • the mounting precision between the roller and the powder feeding roller can precisely control the thickness of the carbon powder layer on the surface of the developing roller, improve the powder discharging precision of the developing roller, and ensure that the toner on the powder feeding roller can be accurately transferred to the developing roller, thereby effectively Improve image formation quality.
  • the developing roller and the shaft end of the photosensitive drum are both positioned through the end cover, thereby reducing the components mounted on each other, thereby controlling the superposition of mounting errors, reducing the mounting error between the developing roller and the photosensitive drum, and improving the photosensitive drum. Development quality.
  • Figure 1 is an image forming apparatus using the process cartridge of the present invention
  • FIG. 2 is a schematic structural view of a process cartridge of the present invention
  • Figure 3 is a cross-sectional view showing the internal structure of the process cartridge of the present invention.
  • FIG. 4 is a schematic view showing the installation structure of the gear set and the process cartridge of the present invention.
  • Figure 5 is a view of the end of the process cartridge of the present invention after removing the end cap and the gear assembly;
  • Figure 6 is a schematic view showing the installation of the powder bin and the waste toner bin of the present invention.
  • 7a is a schematic view showing a manner of cooperation between a shaft limiting hole and a rotating shaft of the process cartridge of the present invention
  • 7b is a schematic view showing another manner of matching the shaft limiting hole and the rotating shaft of the process cartridge of the present invention.
  • 7c is a schematic view showing a third matching manner of the rotating shaft limiting hole and the rotating shaft of the process cartridge of the present invention.
  • Figure 8 is a schematic view showing the installation structure of the developing roller, the powder feeding roller and the powder bin of the present invention.
  • Figure 9 is a schematic view showing the structure of the powder silo of the present invention.
  • FIG. 10 is a schematic structural view of a process cartridge provided with a chip holding device according to the present invention.
  • FIG. 11 is a schematic view showing the installation of an integrated chip of the present invention.
  • Figure 12 is a partial enlarged schematic view of the holding device of Figure 11;
  • Figure 13 is a cross-sectional view showing the structure of the integrated chip of the present invention after installation
  • FIG. 14 is a partially enlarged schematic view showing the integrated chip of FIG. 13 after installation;
  • Figure 15 is a schematic view showing the structure of the process cartridge provided with the electrical contact member of the present invention.
  • Figure 16 is a schematic view showing the installation of the electrical contact member and the step through hole of the present invention.
  • Figure 17 is a perspective view showing the installation of the electrical contact member and the stepped through hole of the present invention.
  • the process cartridge is detachably mounted in a frame of the image forming apparatus, and the following work on the process cartridge A simple description of the way.
  • the process cartridge 20 includes components such as a powder bin 21, a waste toner bin 22, an end cap 23, and a gear set.
  • a powder feed roller 24, a developing roller 25, and a powder discharging blade 26 are attached to the powder compartment 21.
  • a charging roller 27, a photosensitive drum 28, and a cleaning blade 29 are mounted on the waste toner box 22.
  • the powder chamber 21 and the waste toner box 22 are respectively provided with chambers for accommodating the toner, the powder feeding roller 24 is disposed at the outlet of the powder chamber 211, and the developing roller 25 is disposed outside the powder feeding roller 24.
  • the powder feeding roller 24 transfers the toner in the powder magazine 21 to the developing roller 25.
  • the powder discharging knife 26 is also disposed on the outlet side of the powder chamber chamber 211, and the powder discharging knife 26 includes two portions, one of which is a thick powder discharging knife mounting portion 261, and the powder discharging knife mounting portion 261 is fixed to the powder container by screws.
  • the other portion is the thin powder removing blade contact portion 262, and the end portion of the powder discharging blade contact portion 262 is in contact with the surface of the developing roller 25, and after the powder discharging blade 26 is fixed to the powder container 21, the developing roller 25 can be restricted.
  • the thickness of the toner on the surface is the thin powder removing blade contact portion 262, and the end portion of the powder discharging blade contact portion 262 is in contact with the surface of the developing roller 25, and after the powder discharging blade 26 is fixed to the powder container 21, the developing roller 25 can be restricted. The thickness of the toner on the surface.
  • the image forming apparatus further includes a paper feeding device 10, a laser generator 50, a fixing device 30, and a paper discharge device 40.
  • the paper P is sent out through the paper feeding device 10, moves in the direction indicated by the broken line and the arrow in the figure, passes through the process cartridge 20, and the photosensitive drum 28 in the process cartridge 20 cooperates with the transfer roller 60 to carbon
  • the powder is transferred to the paper P.
  • the sheet P passes through the fixing device 30, and the fixing device 30 pressurizes the sheet P by the roller to heat the toner on the sheet P, and finally the sheet P is discharged out of the image forming apparatus through the sheet discharge device 40.
  • the housing of the powder container 21 includes two portions, which are comprised of a powder magazine lower casing 212 and a powder silo upper casing 213 mounted on the powder magazine lower casing 212.
  • the powder container lower shell 212 has a substantially plate shape, and one long side thereof is upturned, forming an angle with the other long side.
  • the powder silo upper shell 213 has a top wall 2131, two end walls 2132 and a side wall 2133; the two ends of the top wall 2131 are respectively connected with the two end walls 2132, and the side wall 2133 and the long side of the powder silo upper shell 213 The side ends are connected, and both ends of the side wall 2133 are respectively connected to the above-mentioned two end walls 2132.
  • the side wall 2133 is provided with a toner outlet 2134, and the powder feeding roller 24 is located outside the toner outlet 2134.
  • the end wall 2132 and the side wall 2133 are both disposed toward the bottom of the powder silo 21, and are combined with the powder silo lower casing 212 to form a casing of the powder silo 21, and are enclosed in the casing to form a powder silo chamber for containing carbon powder.
  • a toner mixing rack 214 is disposed in the powder chamber 211, and an end of the toner mixing rack 214 is connected to the gear set, and the gear set is powered to rotate, and the toner in the powder chamber 211 is agitated.
  • the toner is continuously output to the toner outlet 2134.
  • the side wall 2133 is provided with a flange portion 2135 which is provided in the front direction of the powder container 21.
  • a clamping portion 2136 for holding the shaft end of the developing roller 25 is provided in the front direction of the powder container 21, and both ends of the flange portion 2135 are connected to the two holding portions 2136, respectively.
  • the shaft end of the developing roller 25 is directly positioned with the powder magazine 21, and the shaft end is not provided with a bracket or a bearing or the like.
  • the clamping portion 2136 includes an upper clamping plate 2136a and a lower clamping plate 2136b, and a clamping portion. 2136 has a certain amount of elastic deformation, more specifically, the opening of the nip portion 2136 is smaller than the diameter of the shaft end of the developing roller 25, so that the developing roller 25 is subjected to the resistance of the nip portion 2136 when it is detached, and the developing roller 25
  • the shaft end can be clamped into the clamping portion 2136. After the installation is completed, the shaft end can be well positioned in the clamping portion 2136, and is not easily released from the clamping portion 2136. Thus, the developing roller 25 and the powder are completed. Installation of the warehouse 21.
  • Both ends of the flange portion 2135 are provided with a powder discharging knife positioning post 2135a for positioning the powder blade 26 and a powder discharging knife mounting hole 2135b for mounting and fixing the powder discharging knife 26.
  • the powder discharging blade mounting portion 261 is first pre-positioned by the positioning post 2135a, and then fixed to the flange portion 2135 by screws, thus completing the mounting of the powder discharging blade 26 and the powder container 21.
  • Both the developing roller 25 and the powder discharging knife 26 are co-located on the casing of the powder bin 21, and no additional parts need to be installed, thereby reducing the mounting dimension chain and the fitting tolerance, thereby increasing
  • the precision of the cooperation between the developing roller 25 and the powder discharging blade 26 not only simplifies the product structure, reduces the production cost of the product, but also improves the thickness of the toner layer of the developing roller 25 and ensures the development quality.
  • the upper surface of the mounting surface of the upper clamping plate 2136a and the lower clamping plate 2136b is provided with a boss 2136c, which can increase the contact area between the clamping portion 2136 and the axial end of the developing roller 25, and improve the wear resistance of the clamping portion 2136. Sex, thereby overcoming the friction loss caused by removing the bracket or the bearing and increasing the service life of the product.
  • the powder feeding roller 24 is mounted outside the toner outlet 2134, and both ends of the powder feeding roller 24 are respectively mounted on the both end walls 2132, and one end of the powder feeding roller 24 is connected to the gear set through the gear The group provides power to rotate.
  • the shaft end of the powder feeding roller 24 is also directly mounted and positioned on the powder magazine 21, without using a bracket or a bearing.
  • the end wall 2132 is provided with a mounting groove 2132a for positioning powder feeding.
  • the shaft end of the roller 24 is provided with a notch at the side of the mounting groove 2132a so that the shaft end can be inserted into the mounting groove 2132a.
  • the powder feeding roller 24 Since the powder feeding roller 24 has the same length as the developing roller 25, when the powder feeding roller 24 is mounted, it is necessary to avoid the holding plate 2136 on which the developing roller 25 is mounted, and the holding portion 2136 on the same side as the mounting groove 2132a needs to be disposed.
  • An insertion passage 2136d allows the shaft end of the powder feed roller 24 to be inserted into the mounting groove 2132a through the nip portion 2136.
  • the gear set includes a photosensitive drum drive gear 282 that receives an external driving force, a developing roller drive gear 251 that is coupled to the photosensitive drum drive gear 282, a first idler pulley 252 that is coupled to the developing roller drive gear 251, and a first idler pulley 252.
  • the connected powder feed roller drives the gear 241.
  • the shaft end of the powder feeding roller 24 has no bearing or the constraint of the bracket, and the displacement amount of the powder feeding roller 24 is larger under the action of the external force of the gear. If the powder feeding roller 24 moves toward the developing roller 25 side, it is further pressed against the developing roller 25, resulting in an unstable powder output, which ultimately affects the developing effect, and further may cause the first idler pulley 252 and the powder feeding roller to be driven. When the gear 241 is stuck, the service life of the product is directly reduced. If the powder feed roller 24 is moved away from the developing roller 25 side, the powder output amount is also unstable.
  • the inner wall of the mounting groove 2132a functions as a limiting structure;
  • the limiting structure is a limiting projection 2132c provided at the opening of the mounting groove 2132a, when the powder feeding roller 24 is oriented
  • the limiting projection 2132c can generate a force to weaken or cancel the application of the first idler pulley 252 to the powder feeding roller driving gear 241. The force, in turn, restricts the powder feed roller 24 from continuing to move out of the mounting groove 2132a.
  • the displacement of the powder feeding roller 24 is restricted, so that the powder feeding roller 24 does not move further to the force receiving direction, resulting in the matching precision between the powder feeding roller 24 and the developing roller 25.
  • the reduction, the development quality of the process cartridge 20 is ensured, and the powder feed roller 24 can still work well in the case where the bearing or the bracket is reduced at the axial end, and the number of parts is reduced, thereby reducing the size chain and reducing Assembly error to improve the processing quality of the product.
  • the assembly process of the product can be simplified, and the production cost of the product can be reduced.
  • the mounting groove 2132a and the insertion channel 2136d need only be disposed on one end wall 2132, and the other end wall 2132 adopts the structure of the through hole 2132b to mount the other axial end of the powder feeding roller 24.
  • the through hole 2132b It may be a circular hole or an elliptical hole, and the end of the powder feeding roller 24 is exposed through the through hole 2132b so as to be electrically connected to the conductive sheet.
  • the operator first inserts one end of the powder feeding roller 24 into the through hole 2132b. Since the powder feeding roller 24 is obliquely inserted into the through hole 2132b, it is preferable to adopt an elliptical through hole 2132b to facilitate the axial end of the powder feeding roller 24.
  • the operator inserts the other end of the powder feed roller 24 into the mounting groove 2132a along the insertion passage 2136d.
  • the mounting groove 2132a and the insertion channel 2136d can be disposed on both end walls 2132.
  • the waste toner box 22 is composed of a two-part casing, including a waste toner box upper casing 221 and a waste toner box lower casing 222 installed at the bottom of the waste toner box upper casing 221, After the waste toner hopper upper casing 221 is combined with the waste toner hopper lower casing 222, a waste toner hopper chamber 223 is formed inside the waste toner hopper 22 for storing waste toner on the photosensitive drum 28.
  • the two ends of the waste toner box upper casing 221 are respectively provided with a mounting wall 221a for mounting the axial end of the photosensitive drum 28, and the pair of mounting walls 221a are disposed opposite to each other, thereby forming a photosensitive plate for mounting in the middle of the two mounting walls 221a.
  • the mounting space of the drum 28 is provided with a shaft mounting hole 221b for mounting the photosensitive drum 28 on both mounting walls 221a.
  • the waste toner box 22 is first fixed by a jig, and the operator places the photosensitive drum 28 in the above-mentioned installation space, and the two rotating shaft mounting holes 221b are respectively aligned with the holes at both ends of the photosensitive drum 28, and then the operator will The rotating shaft 281 is inserted into the rotating shaft mounting hole 221b, and penetrates the photosensitive drum 28, and the rotating shaft 281 protrudes from the rotating shaft mounting hole 221b at the other end, thereby positioning the photosensitive drum 28 in the waste toner box upper casing 221.
  • a blocking structure for blocking the rotation of the rotating shaft 281 is disposed in the rotating shaft limiting hole 231 of the end cover 23 that engages with the end of the rotating shaft 281.
  • the shaft end of the rotating shaft 281 shown in FIG. 7a is D-shaped, and the rotating shaft limiting hole 231 is also disposed in a D shape, which completely matches the shaft end of the rotating shaft 281.
  • the above embodiment is simple in structure, when the shaft 281 is installed, the shaft end needs to be completely aligned with the shaft limiting hole 231 to be inserted into the shaft limiting hole 231. If it is not completely aligned, the operator needs to rotate the shaft 281. Make adjustments.
  • the rotating shaft 281 shown in FIG. 7b is disposed in a gear shape, and a plurality of protrusions corresponding to the gear shape of the rotating shaft 281 are uniformly disposed in the rotating shaft limiting hole 231.
  • the rotating shaft 281 and the rotating shaft limiting hole 231 are also Exactly matched.
  • the structure facilitates the alignment of the rotating shaft 281 with the rotating shaft limiting hole 231. Even if interference cannot be installed, the rotating shaft 281 only needs to rotate a small angle to insert the rotating shaft limiting hole 231. Inside.
  • the present invention provides a third embodiment in which only one protrusion is disposed in the shaft limiting hole 231, and more space is left after the shaft 281 is inserted into the shaft limiting hole 231.
  • the rotation shaft 281 can be moved in the space until the rotation shaft 281 touches the projection to stop moving, and the photosensitive drum 28 also stops rotating.
  • the shaft end of the rotating shaft 281 can be set in various shapes, and is not limited. For example, it can be set to a font shape, or half of a font size, or can be a D type, a triangle, etc., as long as it can It is in contact with the above-mentioned protrusions and can be blocked by the protrusions.
  • This embodiment gives the rotating shaft 281 more installation space, and the shaft end does not easily interfere with the projection, and the assembly is easier, and the structure is simple and the production efficiency is improved.
  • the cleaning blade 29 is fixed to the bottom surface of the waste toner box upper casing 221 by screws, and is located at the outlet of the waste toner box chamber 223, and the free end of the cleaning blade 29 is in surface contact with the photosensitive drum 28.
  • the photosensitive drum 28 is rotated clockwise with reference to the direction of the drawing, and the toner adhering to the surface of the photosensitive drum 28 is scraped off by the cleaning blade 29, and the toner falls into the interior of the waste toner chamber chamber 223.
  • Both the photosensitive drum 28 and the cleaning blade 29 are simultaneously positioned in the waste toner box upper casing 221, thereby improving the fitting precision of the photosensitive drum 28 and the cleaning blade 29, and ensuring that the residual toner on the surface of the photosensitive drum 28 can be completely scraped off, otherwise redundant Toner will affect the effect of image transfer.
  • the charging roller 27 is also mounted on the bottom surface of the waste toner box 22 in the clockwise direction on the downstream side of the cleaning blade 29. When the toner on the surface of the photosensitive drum 28 is scraped off by the cleaning blade 29, the charging roller 27 will be photosensitive. The surface of the drum 28 is charged for the next printing cycle.
  • the end of the charging roller 27 is mounted on the waste toner box upper casing 221 by a spring device 271.
  • the spring device 271 includes a mounting seat 271a.
  • the shaft end of the charging roller 27 is positioned on the mounting seat 271a, and the waste toner box upper casing 221 is provided with a
  • the slide rail 221c is used for sliding mounting the mounting seat 271a, between the bottom of the mounting seat 271a and the bottom of the slide rail 221c
  • a spring member 271b is provided, and the spring member 271b applies a force to the mount 271a so that the charge roller 27 can always be kept in contact with the photosensitive drum 28.
  • the charging roller 27 is driven to rotate together, and therefore, the shaft end of the charging roller 27 does not need to be connected to the gear set.
  • the body is formed into a complete process box 20 body.
  • the powder bin 21 is first fixed on the jig, and then the waste toner bin is 22 is placed on the powder hopper 21, and finally the end cap 23 is covered at both ends of the powder hopper 21 and the waste toner hopper 22.
  • the end cover 23 cannot be mounted on the powder magazine 21 and the waste toner box 22 because the inner side of the end cover 23 is Various positioning holes are provided for positioning with the shaft end of each roller and the gear rotating shaft. If the powder bin 21 and the waste toner box 22 are misaligned, the positioning holes on the inner side of the end cover 23 cannot be aligned with the shaft ends of the respective rollers. Cooperate with the gear shaft.
  • the present invention is provided with a predetermined position structure between the loading face of the powder bin 21 and the waste toner box 22, and referring to FIG. 5 and FIG. 6, the predetermined position structure is a predetermined position post 224 and a predetermined position.
  • the predetermined position hole 215 corresponding to the column 224, the predetermined position post 224 and the predetermined position hole 215 are respectively disposed on the waste toner box 22 and the powder bin 21, but the present invention is not limited to this manner, and according to the specific structural design of the product, The positions of the pre-positioning post 224 and the pre-positioning hole 215 are interchanged.
  • the pre-positioning post 224 and the pre-positioning hole 215 mainly function as a predetermined position, and therefore, the caliber of the pre-positioning hole 215 may be slightly larger than the predetermined post 224.
  • the pre-positioning structure is preferably provided with a minimum of two, respectively located at both ends of the process cartridge 20.
  • the mounting accuracy between the photosensitive drum 28 and the developing roller 25 directly affects the print quality of the product, and the photosensitive drum 28 transfers the toner onto the paper P to form an image.
  • the present invention is provided with a rotating shaft limiting hole 231 for inserting the rotating shaft 281 of the photosensitive drum 28 inside the two end covers 23, and is also provided for inserting
  • the developing roller mounting hole 232 at the axial end of the developing roller 25 and the developing roller mounting hole 232 are through holes so that the external electrical contact member can come into contact with the shaft end of the developing roller to conduct electricity.
  • the end cover 23 is more easily engaged with the photosensitive drum 28 and the shaft end of the developing roller 25.
  • the photosensitive drum 28 and the developing roller 25 are positioned at both ends.
  • the end caps 23 are respectively fixed to the powder silo 21 and the waste toner silo 22 by screws. Thereby, the mounting accuracy of the photosensitive drum 28 and the developing roller 25 is ensured.
  • the pre-positioning of the powder silo 21 and the waste toner silo 22 is only to enable the end cap 23 to be more easily engaged with the powder silo 21 and the waste toner silo 22, if the silo 21, the waste toner silo 22 and the end cap are to be made 23 precisely fitting, it is also necessary to provide the end cap positioning post 23a and the end cap positioning hole 23b at the powder cartridge 21, the end of the waste toner box 22, and the inside of the end cap 23.
  • the powder bin 21 or the waste toner box 22 respectively need two positioning points to be positioned with the end cover 23; if there is only one positioning point, the end cover 23 can also rotate around the positioning point; if there are three positioning points, then There may be problems with positioning.
  • the conventional process cartridge 20 is provided with two end cap positioning posts 23a and end cap positioning holes 23b in the powder bin 21 and the waste toner bin 22, respectively.
  • the process cartridge of the present invention has a simpler structure. Based on the mounting structure characteristics of the photosensitive drum 28 and the developing roller 25, the rotating shaft 281 on the photosensitive drum 28 is positioned on the waste toner box 22, and its function is equivalent.
  • the end cap positioning post 23a can be used as one of the positioning points. Therefore, it is only necessary to provide an end cap positioning post 23a or an end cap positioning hole 23b as a positioning point on the housing of the waste toner box 22.
  • the structure of the process cartridge 20 can be simplified by the above configuration, and the cost of the process cartridge 20 can be reduced, and the size of the process cartridge 20 can be reduced.
  • the rotation shaft 281 of the photosensitive drum 28 and the axial end of the developing roller 25 and the end cover 23 have high precision, and the precision of the cooperation between the photosensitive drum 28 and the developing roller 25 can be ensured, and the precision of the matching between the powder container 21 and the waste toner box 22 is not It is required to be very precise, and therefore, the positioning accuracy of the above-described end cap positioning hole 23b and the end cap positioning post 23a can be appropriately lowered.
  • the end cap positioning hole 23b can be made into an elliptical hole, so that the end cap positioning post 23a can have a certain amount of movement in the end cap positioning hole 23b.
  • the integrated chip 233 provides print information of the process cartridge 20 to ensure a stable operating state of the process cartridge 20.
  • the position of the integrated chip 233 may be selectively disposed on the end cover 23 or on the housing corresponding to the powder magazine 21 Or the position of the waste toner box 22 It can also be other locations of the housing.
  • the integrated chip holding device includes a card slot 234, a buckle 234a and a stopper.
  • the stopper may be an original structure on the housing or the end cover for use as a stopper, or may be said to be required by the present invention.
  • the card slot 234 and the buckle 234a may be disposed on the housing or the end cover 23, and the stoppers are correspondingly disposed on the end cover 23 or the housing.
  • the card slot 234 is used to place the integrated chip 233. When the integrated chip 233 is placed in the card slot 234, the buckle 234a clamps the integrated chip 233.
  • the stopper is disposed on the back side of the buckle 234a with respect to the integrated chip 233 to prevent the buckle 234a from loosening the integrated chip 233.
  • the buckle 234a is a plastic member having a certain elasticity, as long as the insertion of the integrated chip 233 can be facilitated and the integrated chip 233 can be clamped in the card slot 234, the integrated chip 233 can be clamped and the elastic deformation toward the rear side of the buckle can be easily performed. .
  • the stopper is disposed on the rear side of the buckle 234a with respect to the integrated chip 233, and when the end cover 23 is mounted to the end of the housing, the stopper prevents the buckle 234a from being elastically deformed away from the integrated chip 233 again, thereby The integrated chip 233 is securely clamped in the card slot 234.
  • the stopper may be a part of the end of the housing of the powder container 21, or may be a protrusion formed separately on the housing.
  • the card slot 234 and the buckle 234a are disposed on the end cover 23, and the entrance and exit of the card slot 234 are near the edge of the end cover 23.
  • the hook portion of the buckle 234a is disposed at the entrance and exit of the card slot 234 to clamp the integrated chip. 233.
  • the entrance and exit of the card slot 234 near the edge of the end cover 23 facilitates the insertion or removal of the integrated chip 233.
  • the hook portion of the buckle 234a is disposed at the entrance and exit of the card slot 234 to clamp the integrated chip 233 placed in the card slot 234 to prevent the integrated chip 233 from coming out of the entrance and exit of the card slot 234.
  • the stopper may be any structure provided at any position as long as its function can be realized.
  • first limiting portion 234b and the second limiting portion 234c are disposed on the sidewall of the card slot 234 to be defined by the first limiting portion 234b and the second limit when the integrated chip 233 is disposed in the card slot 234. Between the parts 234c. Thereby, the integrated chip 233 can be defined to improve the tightness of the integrated chip 233. Further, a guide rail for moving the integrated chip 233 is disposed between the first limiting portion 234b and the second limiting portion 234c, thereby functioning as a guide and a limit when the integrated chip 233 is inserted. Further, the first limiting portion 234b and the second limiting portion 234c are spaced apart from the bottom of the card slot 234.
  • the bottom of the card slot 234 avoids the electrical components on the back side of the integrated chip 233 to prevent damage to the integrated chip 233.
  • the buckle 234a can be disposed outside the moving path of the electrical component, thereby avoiding the electrical component, and the buckle 234a of the present invention is disposed closer to the inner wall of the card slot 234 than to the intermediate position of the card slot 234.
  • the end cap 23 is provided with a stepped through hole 235, and the small end of the stepped through hole 235 is located on the inner side of the process cartridge.
  • the electrical contact member 236 is mounted to the end cap 23.
  • the electrical contact member 236 includes a base portion 236a that can be received in the stepped through hole 235 and an elastic deformation portion 236b that is coupled to the base portion 236a and elastically deformed when the base portion 236a is placed at the large hole end of the stepped through hole 235.
  • the portion 236b abuts against the stepped surface 235a of the stepped through hole 235 to restrict the movement of the base portion 236a toward the process cartridge main body.
  • the elastic deformation portion 236b When the base portion 236a is placed at the large hole end of the stepped through hole 235, the elastic deformation portion 236b is opened at the large hole end of the stepped through hole 235 based on its own elasticity, as shown in Fig. 16, being fully opened. Since the maximum dimension L of the elastic deformation portion 236b is larger than the aperture L1 of the small hole end of the stepped through hole 235, the elastic deformation portion 236b abuts against the stepped surface 235a of the stepped through hole 235, thereby restricting the base portion 236a toward the stepped through hole 235.
  • the movement of the small hole end that is, the reverse direction of the mounting direction of the electrical contact member 236, improves the reliability of the mounting of the electrical contact member 236 and the stability of the developing device when it is used.
  • the electrical contact member 236 further includes a connecting portion 236c and a limiting portion.
  • the limiting portion is connected to the base portion 236a through the connecting portion 236c to be capable of restricting movement of the base portion 236a away from the housing, and the limiting portion is provided with a conductive portion.
  • Contact 236d When the electrical contact member 236 is mounted to the end cap 23, the limiting portion can restrict the movement of the base portion 236a in the mounting direction of the electrical contact member 236, further improving the reliability of the electrical contact member 236 installation. In this manner, the electrical contact member 236 is also structurally simple, without the need to add additional components that form the roller contacts.
  • the limiting portion includes a first limiting portion 236e and a second limiting portion 236f which are oppositely disposed.
  • the first limiting portion When the base portion 236a is disposed at the large hole end of the step through hole 235, the first limiting portion The portion 236e and the second limiting portion 236f are held by the inner side of the end cap 23.
  • the use of the oppositely disposed first limiting portion 236e and the second limiting portion 236f enables the electrical contact member 236 to be mounted more firmly, improving the reliability of the developing device product.
  • the electric contact member 236 is mounted from the inner side of the end cover 23 and can be positioned by the projections and the holes, and the base portion 236a and the elastic deformation portion 236b first enter from the small hole end of the step through hole 235 due to the maximum size of the elastic deformation portion 236b.
  • L is larger than the small hole end L1, so in the small hole end, the elastic deformation portion 236b is pressed against the side wall of the stepped through hole 235.
  • the length of the connecting portion 236c should be such that when the first limiting portion 236e is caught inside the end cover 23, the base portion 236a and the elastic deformation portion 236b can enter the large hole end of the step through hole 235, and the elastic deformation portion 236b can be all at this time. It is opened and abuts against the stepped surface 235a of the stepped through hole 235. Further, the maximum size of the elastic deformation portion 236b is larger than the diameter of the large hole end of the stepped through hole 235. At this time, the elastic deformation portion 236b still receives the side wall of the stepped through hole 235 at the large hole end of the stepped through hole 235. The pressure, therefore, the base 236a does not easily move toward the small hole end of the stepped through hole 235, thereby improving the reliability of electrical conduction of the electrical contact member 236.

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Abstract

一种处理盒，包括粉仓（21），粉仓（21）上安装有显影辊（25），粉仓（21）的壳体上设置有用于夹持安装显影辊（25）轴端的夹持部（2136），夹持部（2136）包括上夹持板（2136a）以及下夹持板（2136b），夹持部（2136）具有使得显影辊（25）的轴端能够被定位在夹持部（2136）内的弹性变形量。

Description

处理盒及图像形成设备 技术领域
本发明实施例涉及一种处理盒及图像形成设备，属于图像形成设备技术领域。
背景技术
处理盒是图像形成设备中的重要构件，用于在纸张上形成碳粉图像。处理盒包括有感光鼓、充电辊、显影辊、送粉辊、粉仓、废粉仓等构件。为了提高记录媒介上的图像质量，除了各构件单品的自身品质优良之外，各构件之间的装配精度也起到很关键的作用，例如，送粉辊与显影辊之间的配合，显影辊与感光鼓之间的配合等。目前市面上的产品，受到技术和打印品质的限制，都很难再在零件的数量上进行删减，因此，结构都比较复杂，具有相互装配关系的零件较多，增加了产品的装配误差。
发明内容
本发明提供一种处理盒及图像形成设备，以解决现有处理盒产品结构更加复杂，安装工序繁多而导致生产效率成本高的技术问题。
为了解决以上技术问题，本发明采取的技术方案是：
一种处理盒，包括粉仓，所述粉仓上安装有显影辊，所述粉仓的壳体上设置有用于夹持安装显影辊轴端的夹持部。
所述夹持部包括上夹持板以及下夹持板，所述夹持部具有使得显影辊的轴端能够被定位在所述夹持部内的一定弹性变形量。
所述上夹持板、下夹持板的安装面边缘处设置有增加夹持部与显影辊轴端的接触面积的凸台。
所述粉仓的壳体的两端分别设置有夹持部。
所述粉仓上安装有出粉刀，所述出粉刀固定在粉仓的壳体上。
所述粉仓的壳体包括粉仓上壳及粉仓下壳，所述粉仓上壳包括一顶壁、两端壁以及一侧壁；所述顶壁的两端分别与两端壁连接，所述侧壁与粉仓上 壳的长边侧连接，所述侧壁的两端分别与所述两端壁连接。
所述侧壁设置有一凸缘部，所述凸缘部向粉仓的前方方向设置，所述凸缘部上设置有用于定位出粉刀的出粉刀定位柱和出粉刀定位孔，所述出粉刀通过螺钉固定安装。
所述粉仓上安装有送粉辊，所述粉仓的壳体上设置有用于安装送粉辊轴端的安装槽，所述安装槽的侧面设置有用于插入送粉辊轴端的槽口。
所述安装槽的内侧设置有用于限制送粉辊轴端位移的限位结构；所述限位结构为设置在安装槽槽口处的限位凸起。
所述粉仓的壳体上设置有用于安装送粉辊另一轴端的通孔；所述通孔为椭圆孔。
还包括废粉仓，所述废粉仓的壳体两端分别设置有一用于安装感光鼓转轴的安装壁，所述两安装壁彼此相对设置，所述两个安装壁上均设置有一个用于安装感光鼓转轴的转轴安装孔。
还包括端盖，所述端盖内侧设置有用于安装显影辊轴端的显影辊安装孔和用于安装感光鼓转轴的转轴限位孔。
所述转轴限位孔内设置有凸起，所述转轴插入转轴限位孔后能够在转轴限位孔内转动，直到被凸起阻挡而停止转动。
所述粉仓壳体以及废粉仓壳体上分别设置有一个端盖定位柱或者是端盖定位孔，所述端盖的内侧设置有与上述端盖定位柱或者是端盖定位孔相对应的定位孔或者是定位柱。
所述粉仓与废粉仓的安装面之间设置有预定位结构，所述预定位结构为一预定位柱和一与预定位柱对应的预定位孔。
还包括：安装在所述端盖上的集成芯片；以及用于安装所述集成芯片的卡持装置；所述卡持装置包括：用于放置所述集成芯片的卡槽、用于卡紧所述集成芯片的卡扣、以及用于防止所述卡扣松脱的止动件；所述卡槽和所述卡扣设置于所述壳体和所述端盖中的一个上，所述止动件对应的设置于所述壳体和所述端盖中的另一个上，其中，相对于所述集成芯片，所述止动件设置于所述卡扣的后侧，以防止所述卡扣发生朝向其后侧的弹性形变。
所述卡槽和所述卡扣设置于所述壳体和所述端盖中的一个上，所述止动件对应的设置于所述壳体和所述端盖中的另一个上。
还包括：安装在所述端盖上的电接触构件；以及用于安装所述电接触构件的台阶通孔。
所述电接触构件包括基部和弹性形变部；所述基部置于所述台阶通孔的大孔端时，所述弹性形变部能够抵靠于所述台阶通孔的台阶面，以限制所述基部朝向所述壳体移动。
本发明还提供一种图像形成设备，包括框架，所述框架内可拆卸的安装有上述任一处理盒。
在采用了上述技术方案后，由于将显影辊直接安装在粉仓上，提高了显影辊与粉仓的安装精度，而且不需要使用支架或者是轴承之类的部件，简化了产品的结构，提高了生产效率，降低了产品的生产成本，同时，使产品的小型化得以实现。
由于将显影辊直接安装在粉仓上，使得出粉刀、送粉辊与显影辊都直接定位在粉仓上，减少了相互安装的部件，从而控制安装误差的叠加，提高出粉刀、显影辊及送粉辊之间的安装精度，能够精确控制显影辊表面的碳粉层厚度，提高显影辊的出粉精度，而且保障送粉辊上的碳粉能够精确转载至显影辊上，从而有效提高图像形成品质。另外，还使得显影辊与感光鼓的轴端都通过端盖进行定位，减少了相互安装的部件，从而控制安装误差的叠加，降低了显影辊与感光鼓之间的安装误差，提高了感光鼓的显影品质。
附图说明
图1为使用本发明处理盒的一种图像形成设备；
图2为本发明处理盒的结构示意图；
图3为本发明处理盒的内部结构剖视图；
图4为本发明齿轮组与处理盒的安装结构示意图；
图5为本发明处理盒端部去除端盖及齿轮组件后的视图；
图6为本发明粉仓与废粉仓的安装示意图；
图7a为本发明处理盒的转轴限位孔与转轴一种配合方式示意图；
图7b为本发明处理盒的转轴限位孔与转轴另一种配合方式示意图；
图7c为本发明处理盒的转轴限位孔与转轴第三种配合方式示意图；
图8为本发明显影辊、送粉辊与粉仓的安装结构示意图；
图9本发明粉仓的结构示意图；
图10为本发明处理盒设置有芯片卡持装置的结构示意图；
图11为本发明集成芯片的安装示意图；
图12为图11中的卡持装置的局部放大示意图；
图13为本发明集成芯片安装完成后的结构剖视图；
图14为图13中集成芯片安装后的局部放大示意图；
图15为本发明处理盒设置有电接触构件的结构示意图；
图16为本发明电接触构件与台阶通孔的安装示意图；
图17为本发明电接触构件与台阶通孔的立体视角的安装示意图。
具体实施方式
参照附图1至附图3所示的一种处理盒，以及一种用于安装该处理盒的图像形成设备，处理盒可拆卸的安装在图像形成设备的框架内，以下对处理盒的工作方式进行简单的描述。
处理盒20包括粉仓21、废粉仓22、端盖23及齿轮组等构件。所述粉仓21上安装有送粉辊24、显影辊25以及出粉刀26。所述废粉仓22上安装有充电辊27、感光鼓28以及清洁刮刀29。
其中，粉仓21与废粉仓22内部都分别设置有用于容纳碳粉的腔室，送粉辊24设置在粉仓腔室211的出口处，显影辊25设置在送粉辊24的外侧，送粉辊24将粉仓21内的碳粉转载至显影辊25上。出粉刀26也设置在粉仓腔室211的出口一侧，出粉刀26包括两部分，其中一部分为较厚的出粉刀安装部261，出粉刀安装部261通过螺钉固定在粉仓21上，另一部分为较薄的出粉刀接触部262，出粉刀接触部262的端部与显影辊25的表面接触，出粉刀26固定在粉仓21之后，就能够限制显影辊25表面的碳粉的厚度。
一般的，图像形成设备还包括有送纸装置10、激光发生器50、定影装置30以及排纸装置40。图像形成设备工作时，纸张P通过送纸装置10送出，沿图中虚线及箭头所示方向移动，先经过处理盒20，处理盒20内的感光鼓28与转印辊60共同作用，将碳粉转印至纸张P上。纸张P再经过定影装置30，定影装置30通过辊轮对纸张P进行加压加热使碳粉固定在纸张P上，最后纸张P再经过排纸装置40排出图像形成设备之外。
以下结合附图对处理盒20内构件的配合关系做进一步的描述。
(显影辊与出粉刀的安装定位)
参照附图3至附图8，粉仓21的壳体包括两部分，由粉仓下壳212及安装在粉仓下壳212上的粉仓上壳213构成。其中，所述粉仓下壳212基本呈一板状，其一长边侧上翘，与另一长边侧形成一夹角。所述粉仓上壳213具有一顶壁2131、两端壁2132以及一侧壁2133；顶壁2131的两端分别与两端壁2132连接，该侧壁2133与粉仓上壳213的长边侧连接，并且侧壁2133的两端又分别与上述两端壁2132连接，侧壁2133上设置有碳粉出口2134，送粉辊24位于该碳粉出口2134的外侧。
上述端壁2132及侧壁2133都向粉仓21的底部方向设置，与粉仓下壳212结合形成了粉仓21的壳体，并且在壳体内围合形成一个容纳碳粉的粉仓腔室211，所述粉仓腔室211内设置有碳粉搅拌架214，碳粉搅拌架214的端部与齿轮组连接，通过齿轮组提供动力转动，搅动粉仓腔室211内的碳粉，使碳粉不断向碳粉出口2134输出。
上述侧壁2133设置有一凸缘部2135，该凸缘部2135向粉仓21的前方方向设置。两端壁2132上沿粉仓21的前方方向分别设置有夹持部2136用于夹持安装显影辊25的轴端，上述凸缘部2135的两端分别连接在两个夹持部2136上。
显影辊25的轴端是直接与粉仓21定位的，该轴端上并没有安装支架或者是轴承等构件，上述夹持部2136包括上夹持板2136a以及下夹持板2136b，夹持部2136具有一定的弹性变形量，更具体的说，夹持部2136的开口较小于显影辊25的轴端直径，使得显影辊25拆装时都受到夹持部2136的阻力，显影辊25的轴端可以卡入夹持部2136内，安装完成后，其轴端又能够被很好的定位在夹持部2136内，不容易从夹持部2136内脱出，如此，完成显影辊25与粉仓21的安装。
凸缘部2135的两端分别设置有用于定位出粉刀26的出粉刀定位柱2135a以及用于安装固定出粉刀26的出粉刀安装孔2135b。出粉刀安装部261首先通过定位柱2135a预定位，再通过螺钉被固定在凸缘部2135上，如此，完成了出粉刀26与粉仓21的安装。显影辊25与出粉刀26都共同定位在粉仓21的壳体上，不需要安装额外的零件，减少安装尺寸链及配合公差，从而增加 了显影辊25与出粉刀26的配合精度，不仅简化了产品结构，降低产品生产成本，同时提高了显影辊25的碳粉层厚度精度，保证显影质量。
上述上夹持板2136a、下夹持板2136b的安装面边缘处设置有凸台2136c，该凸台2136c能够增加夹持部2136与显影辊25轴端的接触面积，提高夹持部2136的耐磨性，从而克服了去除支架或者是轴承之后所产生的摩擦损耗，增加产品的使用寿命。
(显影辊与送粉辊的安装定位)
参照附图3至附图9，送粉辊24安装在碳粉出口2134外侧，送粉辊24的两端分别安装在两端壁2132上，送粉辊24的一端与齿轮组连接，通过齿轮组提供动力转动。送粉辊24的轴端也是直接安装定位在粉仓21上的，不使用支架或者是轴承，如附图4、附图5所示，端壁2132上设置有安装槽2132a用于定位送粉辊24轴端，该安装槽2132a的侧面设置有槽口使轴端能够插入安装槽2132a内。由于送粉辊24与显影辊25的长度相当，因此，送粉辊24安装时，需避开安装显影辊25的夹持板2136，与上述安装槽2132a位于同一侧的夹持部2136需要设置一个插入通道2136d使送粉辊24的轴端能够通过夹持部2136，插入安装槽2132a内。
所述齿轮组包括接收外部驱动力的感光鼓驱动齿轮282、与感光鼓驱动齿轮282连接的显影辊驱动齿轮251、与显影辊驱动齿轮251连接的第一惰轮252以及与第一惰轮252连接的送粉辊驱动齿轮241。
由上述送粉辊24的安装结构可知，送粉辊24的轴端没有轴承或者是支架的约束，在齿轮外力的作用下，送粉辊24的位移量会更大。如果送粉辊24向显影辊25一侧移动，就会进一步与显影辊25挤压，导致出粉量不稳定，最终影响显影效果，进一步还可能会出现第一惰轮252与送粉辊驱动齿轮241卡死的情况，直接降低产品的使用寿命。如果送粉辊24向远离显影辊25一侧移动，也会导致出粉量不稳定。当送粉辊24背向显影辊25移动时，安装槽2132a的内壁充当了限位结构的作用；限位结构是设置在安装槽2132a开口处的限位凸起2132c，当送粉辊24向显影辊25移动，送粉辊24的轴端作用在限位凸起2132c上时，限位凸起2132c能够产生一个力，削弱或者是抵消第一惰轮252向送粉辊驱动齿轮241施加的力，进而限制送粉辊24继续向安装槽2132a外移动。
本发明通过在安装槽2132a内侧设置一个限位结构，限制送粉辊24的位移，使送粉辊24不会进一步向受力方向移动，导致送粉辊24与显影辊25之间的配合精度降低，保障处理盒20的显影质量，实现了使送粉辊24在轴端减少轴承或者支架的情况下，依然能够很好的工作的目的，而且减少了零件数，就减少了尺寸链、减少装配误差，提高产品的加工品质。进一步的，还能够简化产品的组装工艺，降低产品的生产成本。
一般的，上述安装槽2132a以及插入通道2136d只需要设置在一个端壁2132上，另外一个端壁2132采用的是通孔2132b的结构来安装送粉辊24的另一个轴端，该通孔2132b可为圆孔或者是椭圆孔，送粉辊24的端部露出通孔2132b，以可以与导电片接触通电。安装时，操作者先将送粉辊24的一端插入通孔2132b的，由于送粉辊24是倾斜插入通孔2132b的，因此优选采用椭圆形的通孔2132b，以便于送粉辊24轴端插入，然后，操作者将送粉辊24的另一端沿插入通道2136d插入安装槽2132a内。当然，根据产品设计的实际需要，可以在两个端壁2132上都设置安装槽2132a以及插入通道2136d。
(感光鼓、清洁刮刀与废粉仓的安装定位)
参照附图3至6及附图7a～7c，废粉仓22由两部分壳体组成，包括一废粉仓上壳221和安装在废粉仓上壳221底部的废粉仓下壳222，废粉仓上壳221与废粉仓下壳222组合后，在废粉仓22内部形成一个废粉仓腔室223用于存储感光鼓28上的废粉。上述废粉仓上壳221的两端分别设置有一用于安装感光鼓28轴端的安装壁221a，上述一对安装壁221a彼此相对设置，从而在两个安装壁221a的中间形成一个用于安装感光鼓28的安装空间，两个安装壁221a上都设有一个用于安装感光鼓28的转轴安装孔221b。
安装时，废粉仓22先通过夹具固定，操作者再将感光鼓28放置在上述安装空间内，并使上述两转轴安装孔221b分别与感光鼓28两端的孔对齐，然后操作者将一根转轴281插入转轴安装孔221b，并贯穿感光鼓28，转轴281从另外一端的转轴安装孔221b伸出,从而将感光鼓28定位在废粉仓上壳221。为了防止转轴281随感光鼓28一起转动，造成感光鼓28跳动幅度增加，在端盖23上与转轴281的端部配合的转轴限位孔231内设置有用于阻挡转轴281转动的阻挡结构。
参照附图7a～7c，示出了三种转轴限位孔231与转轴281的实施方式。
其中，附图7a中所示的转轴281轴端为D型，转轴限位孔231也设置成D型，与转轴281的轴端完全匹配。上述实施方式虽然结构简单，不过转轴281安装时，需要使其轴端与转轴限位孔231完全对位，才能够插入转轴限位孔231内，如果没有完全对位，操作者需要转动转轴281进行调整。
附图7b中所示的转轴281设置成齿轮形状，转轴限位孔231内均匀设置有若干个与转轴281齿轮外形对应的凸起，此种实施方式中的转轴281与转轴限位孔231也是完全匹配的。相对于附图7a中的实施方式，此种结构便于转轴281与转轴限位孔231对位，即使发生了干涉无法安装，转轴281只需要转动很小的角度，就能够插入转轴限位孔231内。
进一步的，如附图7c所示，本发明提供第三种实施方式，在转轴限位孔231内只设置一个凸起，当转轴281插入转轴限位孔231之后，还留有较多的空间，使得转轴281能够在该空间内移动，直到转轴281碰触到凸起停止移动，感光鼓28也随之停止转动。基于上述原理，转轴281的轴端可以设置成各种形状，并不进行限制，例如，可以设置成一字型，或者是一字型的一半大小，还可以是D型，三角形等等，只要能够与上述凸起接触，被凸起阻挡即可。这种实施方式给予转轴281更多的安装空间，其轴端不容易与凸起干涉，组装更容易，不仅结构简单，生产效率也得到提高。
如附图3所示，清洁刮刀29通过螺钉安装固定在废粉仓上壳221的底面，位于废粉仓腔室223的出口处，清洁刮刀29的自由端与感光鼓28表面接触。以图示方向为基准，感光鼓28做顺时针转动，依附在感光鼓28表面的碳粉就会被清洁刮刀29刮下，碳粉落入废粉仓腔室223内部。感光鼓28与清洁刮刀29都同时定位在废粉仓上壳221，从而提高了感光鼓28与清洁刮刀29的配合精度，确保感光鼓28表面的残留碳粉能够被完全刮下，否则多余的碳粉将会影响图像转印的效果。
充电辊27同样安装在废粉仓22的底面，沿顺时针方向，位于清洁刮刀29的下游一侧，当感光鼓28表面的碳粉被清洁刮刀29刮下后，充电辊27将会对感光鼓28的表面进行充电，以进行下一步的打印循环。充电辊27的端部通过弹簧装置271安装在废粉仓上壳221，该弹簧装置271包括一安装座271a，充电辊27的轴端定位在安装座271a上，废粉仓上壳221设有一滑轨221c用于滑动安装安装座271a，安装座271a的底部与滑轨221c底部之间 设有弹簧件271b，弹簧件271b向安装座271a施加力，使得充电辊27能够始终保持与感光鼓28接触。当感光鼓28转动时，带动充电辊27一起转动，因此，充电辊27的轴端不需要连接到齿轮组上。
(粉仓与废粉仓的安装)
当粉仓21与废粉仓22都各自组装完成后，再合体形成一个完整的处理盒20主体，通常的，按照处理盒20的结构特点，粉仓21先固定在夹具上，然后废粉仓22再放置在粉仓21上，最后将端盖23盖合在粉仓21和废粉仓22的两端。上述端盖23安装的过程中，如果粉仓21与废粉仓22合体的误差较大，将导致端盖23无法安装在粉仓21和废粉仓22上，原因是，端盖23的内侧设置有各种定位孔用于与各辊轮的轴端和齿轮转轴定位，如果粉仓21与废粉仓22错位较多，则端盖23内侧的定位孔就无法与各辊轮的轴端和齿轮转轴配合。
为此，本发明在粉仓21与废粉仓22的安装面之间设置有预定位结构，参照附图5、附图6，所述预定位结构为一预定位柱224和一与预定位柱224对应的预定位孔215，预定位柱224和预定位孔215分别设置在废粉仓22和粉仓21上，不过本发明并不局限于此种方式，根据产品的具体结构设计，可以将预定位柱224和预定位孔215的位置互换。上述预定位柱224与预定位孔215主要起到预定位的作用，因此，预定位孔215的口径可稍大于预定位柱224。为了实现更好的预定位效果，该预定位结构优选是最少设置两个，分别位于处理盒20的两端。
(感光鼓、显影辊与端盖的安装定位)
感光鼓28与显影辊25之间的安装精度直接影响到产品的打印质量，感光鼓28将碳粉转印至纸张P上，形成图像。为了保证感光鼓28与显影辊25之间的安装精度，本发明在两个端盖23内侧都设置有转轴限位孔231用于插装感光鼓28的转轴281，同时还设置有用于插装显影辊25轴端的显影辊安装孔232，显影辊安装孔232为通孔，以使得外部电接触部件能够与显影辊的轴端接触，进行导电。
经过上述粉仓21与废粉仓22的预定位安装之后，端盖23更容易与感光鼓28、显影辊25的轴端配合，安装完成后，感光鼓28与显影辊25的两端都定位在端盖23上，再通过螺钉将端盖23分别与粉仓21、废粉仓22固定， 从而保证了感光鼓28与显影辊25的安装精度。
(粉仓、废粉仓与端盖的安装)
由上可知，粉仓21和废粉仓22的预定位只是为了能够使端盖23更容易的与粉仓21、废粉仓22配合，如果要使粉仓21、废粉仓22与端盖23精确地配合，还需要在粉仓21、废粉仓22的端部以及端盖23的内侧都设置端盖定位柱23a和端盖定位孔23b。
一般而言，粉仓21或者废粉仓22分别需要两个定位点才能够与端盖23定位；如果只有一个定位点，端盖23还能够绕该定位点旋转；如果有三个定位点，则可能产生过定位的问题。传统的处理盒20就是分别在粉仓21和废粉仓22设置两个端盖定位柱23a和端盖定位孔23b。
不过，本发明的处理盒采用了更加简单的结构，基于上述感光鼓28以及显影辊25的安装结构特点可知，感光鼓28上的转轴281是定位在废粉仓22上的，其作用相当于端盖定位柱23a，可以作为其中一个定位点，因此，在废粉仓22的壳体上只需要再设置一个端盖定位柱23a或者是端盖定位孔23b作为定位点即可。
另外，在粉仓21上，由于显影辊25的轴端是直接定位在粉仓21上的，其作用也相当于端盖定位柱23a，可以作为其中一个定位点，因此，在粉仓21的壳体上只需要再设置一个端盖定位柱23a或者是端盖定位孔23b即可。
如此，通过上述结构就可以简化处理盒20的结构，不仅降低了成本，而且实现处理盒20的小型化。
感光鼓28的转轴281以及显影辊25的轴端与端盖23的配合精度较高，已经能够保证感光鼓28与显影辊25的配合精度，而粉仓21与废粉仓22的配合精度不需要十分精确，因此，上述端盖定位孔23b与端盖定位柱23a的定位精度可适当降低。如附图所示，可将端盖定位孔23b作成椭圆孔，这样端盖定位柱23a可以在端盖定位孔23b内有一定的活动量。
(集成芯片)
参见图10至图14，集成芯片233提供处理盒20的打印信息，以能够保证处理盒20稳定的工作状态。鉴于处理盒20的规格或者集成芯片233与图像形成设备内部的电气接头连接位置的不同，集成芯片233的位置可以选择性地设置在端盖23上，或者是设置在壳体上对应粉仓21或者废粉仓22的位 置，也可以是壳体的其它位置。
集成芯片卡持装置包括卡槽234、卡扣234a以及止动件，止动件可以是壳体或者端盖上原有的结构以用来作为止动件，也可以说是为了本发明的需要，单独形成在壳体或者端盖上的结构。根据集成芯片233位置的需要，卡槽234和卡扣234a可以设置于壳体或者端盖23上，而止动件相应的设置于端盖23或者壳体上。卡槽234用于放置集成芯片233，当集成芯片233置于卡槽234时，卡扣234a卡紧集成芯片233。止动件相对于集成芯片233设置于卡扣234a的背面一侧，以防止卡扣234a松脱集成芯片233。卡扣234a是具有一定弹性的塑料件，只要能够方便集成芯片233的插入并且集成芯片233置于卡槽234中时能够将集成芯片233卡紧而不易发生朝向卡扣后侧的弹性形变即可。
相对于集成芯片233，止动件设置于卡扣234a的后侧，当将端盖23安装至壳体的端部时，止动件防止卡扣234a再次发生远离集成芯片233的弹性形变，从而使集成芯片233牢固地卡紧于卡槽234中。止动件可以是粉仓21的壳体端部的一部分，也可以是单独形成在壳体的凸起。
卡槽234和卡扣234a设置于端盖23，并且卡槽234的进出口处靠近端盖23的边缘，卡扣234a的钩状部设置于卡槽234的进出口处，以卡紧集成芯片233。卡槽234的进出口处靠近端盖23的边缘使得集成芯片233的插入或者拔出较为方便。另外，卡扣234a的钩状部设置在卡槽234的进出口处以将置于卡槽234内的集成芯片233卡紧，防止集成芯片233从卡槽234的进出口处脱出。止动件可以是设置于任何位置的任何结构，只要能够实现其功能即可。
另外，卡槽234的侧壁上设置有第一限位部234b和第二限位部234c，以当集成芯片233置于卡槽234时被限定于第一限位部234b和第二限位部234c之间。由此能够限定集成芯片233，提高集成芯片233卡紧的牢固性。进一步地，第一限位部234b和第二限位部234c之间设置有用于集成芯片233移动的导轨，从而在插入集成芯片233时起到导向和限位的作用。进一步地，第一限位部234b和第二限位部234c与卡槽234的底部间隔开。由此使得卡槽234的底部避开集成芯片233背面的电气元件，以防止损坏集成芯片233。同理，当集成芯片233插入卡槽234时，为了使卡扣234a不刮碰到电气元件， 可以将卡扣234a设置在电气元件的移动路径之外，从而避开了电气元件，本发明的卡扣234a设置成更靠近卡槽234的内壁，而不是位于卡槽234的中间位置。
(电接触构件)
参见图15至图17，端盖23设置有台阶通孔235，并且台阶通孔235的小孔端位于处理盒内部一侧。电接触构件236安装至端盖23上。电接触构件236包括基部236a和弹性形变部236b，基部236a能够容纳于台阶通孔235中，弹性形变部236b连接于基部236a，当基部236a置于台阶通孔235的大孔端时，弹性形变部236b抵靠于台阶通孔235的台阶面235a，来限制基部236a朝向处理盒主体方向移动。基部236a置于台阶通孔235的大孔端时，弹性形变部236b基于自身弹性在台阶通孔235的大孔端张开，如图16所示为完全张开。由于弹性形变部236b张开的最大尺寸L大于台阶通孔235的小孔端的孔径L1，所以弹性形变部236b抵靠于台阶通孔235的台阶面235a上，从而限制基部236a朝向台阶通孔235的小孔端移动，即电接触构件236安装方向的反方向移动，从而提高了电接触构件236安装的可靠性以及显影装置使用时的稳定性。
如图16所示，电接触构件236还包括连接部236c以及限位部，限位部通过连接部236c连接至基部236a以能够限制基部236a远离壳体的移动，并且限位部上设置有导电触点236d。当电接触构件236安装至端盖23时，限位部能够限制基部236a沿电接触构件236安装方向移动，进一步提高电接触构件236安装的可靠性。采用这种方式还使得电接触构件236结构简单，不用增设形成辊触点的其它部件。
如图17所示，作为优选地，限位部包括相对设置的第一限位部236e和第二限位部236f，当基部236a置于台阶通孔235的大孔端时，第一限位部236e和第二限位部236f卡持于端盖23的内侧。采用相对设置的第一限位部236e和第二限位部236f能够使得电接触构件236安装更牢固，提高显影装置产品的可靠性。
电接触构件236从端盖23的内侧安装，可以通过凸起和孔进行定位，基部236a以及弹性形变部236b先从台阶通孔235的小孔端进入，由于弹性形变部236b张开的最大尺寸L大于小孔端L1，所以在小孔端中，弹性形变部 236b是承受台阶通孔235的侧壁挤压的。
连接部236c的长度应满足当第一限位部236e卡在端盖23的内侧后，基部236a与弹性形变部236b能够进入到台阶通孔235的大孔端，此时弹性形变部236b可以全部张开并且抵靠在台阶通孔235的台阶面235a上。进一步地，弹性形变部236b张开的最大尺寸大于台阶通孔235的大孔端的孔径，此时，弹性形变部236b在台阶通孔235的大孔端时依然承受台阶通孔235侧壁的挤压，因此基部236a不容易朝向台阶通孔235的小孔端移动，从而提高电接触构件236导电的可靠性。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (20)

  1. 一种处理盒，包括粉仓，所述粉仓上安装有显影辊，其特征在于，所述粉仓的壳体上设置有用于夹持安装显影辊轴端的夹持部。
  2. 根据权利要求1所述的处理盒，其特征在于，所述夹持部包括上夹持板以及下夹持板，所述夹持部具有使得显影辊的轴端能够被定位在所述夹持部内的弹性变形量。
  3. 根据权利要求2所述的处理盒，其特征在于，所述上夹持板、下夹持板的安装面边缘处设置有增加夹持部与显影辊轴端的接触面积的凸台。
  4. 根据权利要求1-3任一所述的任一处理盒，其特征在于，所述粉仓的壳体的两端分别设置有夹持部。
  5. 根据权利要求1所述的处理盒，其特征在于，所述粉仓上安装有出粉刀，所述出粉刀固定在粉仓的壳体上。
  6. 根据权利要求5所述的处理盒，其特征在于，所述粉仓的壳体包括粉仓上壳及粉仓下壳，所述粉仓上壳包括一顶壁、两端壁以及一侧壁；所述顶壁的两端分别与两端壁连接，所述侧壁与粉仓上壳的长边侧连接，所述侧壁的两端分别与所述两端壁连接。
  7. 根据权利要求6所述的处理盒，其特征在于，所述侧壁设置有一凸缘部，所述凸缘部向粉仓的前方方向设置，所述凸缘部上设置有用于定位出粉刀的出粉刀定位柱和出粉刀定位孔。
  8. 根据权利要求1-3任一所述的处理盒，其特征在于，所述粉仓上安装有送粉辊，所述粉仓的壳体上设置有用于安装送粉辊轴端的安装槽，所述安装槽的侧面设置有用于插入送粉辊轴端的槽口。
  9. 根据权利要求8所述的处理盒，其特征在于，所述安装槽的内侧设置有用于限制送粉辊轴端位移的限位结构；所述限位结构为设置在安装槽槽口处的限位凸起。
  10. 根据权利要求8所述的处理盒，其特征在于，所述粉仓的壳体上设置有用于安装送粉辊另一轴端的通孔；所述通孔为椭圆孔。
  11. 根据权利要求1-3任一所述的处理盒，其特征在于，还包括废粉仓，所述废粉仓的壳体两端分别设置有一用于安装感光鼓转轴的安装壁，所述两安装壁彼此相对设置，所述两个安装壁上均设置有一个用于安装感光鼓转轴 的转轴安装孔。
  12. 根据权利要求11所述的处理盒，其特征在于，还包括端盖，所述端盖内侧设置有用于安装显影辊轴端的显影辊安装孔和用于安装感光鼓转轴的转轴限位孔。
  13. 根据权利要求12所述的处理盒，其特征在于，所述转轴限位孔内设置有凸起，所述转轴插入转轴限位孔后能够在转轴限位孔内转动，直到被凸起阻挡而停止转动。
  14. 根据权利要求12所述的处理盒，其特征在于，所述粉仓壳体以及废粉仓壳体上分别设置有一个端盖定位柱或者是端盖定位孔，所述端盖的内侧设置有与上述端盖定位柱或者是端盖定位孔相对应的定位孔或者是定位柱。
  15. 根据权利要求11所述的处理盒，其特征在于，所述粉仓与废粉仓的安装面之间设置有预定位结构，所述预定位结构为一预定位柱和一与预定位柱对应的预定位孔。
  16. 根据权利要求12所述的处理盒，其特征在于，还包括：
    安装在所述端盖上的集成芯片；以及用于安装所述集成芯片的卡持装置；
    所述卡持装置包括：用于放置所述集成芯片的卡槽、用于卡紧所述集成芯片的卡扣、以及用于防止所述卡扣松脱的止动件；其中，相对于所述集成芯片，所述止动件设置于所述卡扣的后侧，以防止所述卡扣发生朝向其后侧的弹性形变。
  17. 根据权利要求16所述的处理盒，其特征在于，所述卡槽和所述卡扣设置于所述壳体和所述端盖中的一个上，所述止动件对应的设置于所述壳体和所述端盖中的另一个上。
  18. 根据权利要求12所述的处理盒，其特征在于，还包括：安装在所述端盖上的电接触构件；以及用于安装所述电接触构件的台阶通孔。
  19. 根据权利要求18所述的处理盒，其特征在于，
    所述电接触构件包括基部和弹性形变部；所述基部置于所述台阶通孔的大孔端时，所述弹性形变部能够抵靠于所述台阶通孔的台阶面，以限制所述基部朝向所述壳体移动。
  20. 一种图像形成设备，包括框架，其特征在于，所述框架内可拆卸的安装有如权利要求1至19任一所述的任一处理盒。
PCT/CN2014/089292 2014-01-04 2014-10-23 处理盒及图像形成设备 WO2015101086A1 (zh)

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