WO2016107214A1 - Cartouche de développement - Google Patents

Cartouche de développement Download PDF

Info

Publication number
WO2016107214A1
WO2016107214A1 PCT/CN2015/089641 CN2015089641W WO2016107214A1 WO 2016107214 A1 WO2016107214 A1 WO 2016107214A1 CN 2015089641 W CN2015089641 W CN 2015089641W WO 2016107214 A1 WO2016107214 A1 WO 2016107214A1
Authority
WO
WIPO (PCT)
Prior art keywords
gear
developing cartridge
rotating member
large diameter
diameter portion
Prior art date
Application number
PCT/CN2015/089641
Other languages
English (en)
Chinese (zh)
Inventor
李争光
范文燚
Original Assignee
珠海天威飞马打印耗材有限公司
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
Application filed by 珠海天威飞马打印耗材有限公司 filed Critical 珠海天威飞马打印耗材有限公司
Publication of WO2016107214A1 publication Critical patent/WO2016107214A1/fr

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer

Definitions

  • the present invention relates to the field of electrophotographic imaging, and more particularly to a developing cartridge for a laser printer.
  • the present invention is based on a Chinese utility model patent application filed on Dec. 30, 2014, with the application number of 201420859164.5, the content of which is hereby incorporated by reference.
  • An electrophotographic image forming apparatus generally supplies toner using a developing cartridge detachably mounted therein, and develops an electrostatic latent image on the photosensitive member through a developing roller in the developing cartridge, and then transfers it onto a medium such as paper to form a visible image.
  • Chinese Patent Publication No. 100100470394C discloses a developing cartridge in which a developing roller is disposed at a powder discharge port of a casing to drive a rotating gear train such as a developing roller. On the outside of the casing, a detecting gear having a tooth missing portion is engageable with a driving gear in the gear train, and a detecting member is disposed on the detecting gear.
  • the gear When the developing cartridge is mounted to the imaging device, the gear is connected to the driving force of the imaging device and rotates. In the initial stage, the rotation of the entire gear train is not stable. At this time, the detecting gear is meshed with the driving gear and may rotate. The detecting gear or the detecting member is damaged, and the detecting gear having the detecting member has a complicated structure, high manufacturing and mounting precision requirements, and high cost, and the developing cartridge having the detecting gear is also high in cost.
  • a primary object of the present invention is to provide a developing cartridge which is simple in structure, low in cost, and which can be moved after the gear train rotates smoothly.
  • a developing cartridge provided by the present invention includes: a casing having a toner accommodating portion for containing toner; a developing roller on which carbon powder can be carried to develop an electrostatic latent image; and is disposed outside one end wall of the casing a gear member disposed on an outer side of the end wall, the transmission member including a small diameter portion having a clearance fit with the tooth tip of the gear and a large-diameter portion of the large-diameter portion that can be interference-fitted with the tooth tip of the gear, the large diameter portion including An elastic friction layer on the circumferential surface, a side of the clutch wheel away from the casing is provided with a push block protruding radially; a detecting piece which can be pushed by the push block to move longitudinally relative to the casing; the gear is provided with a coaxial cylinder a circular groove on the circumferential surface of the cylindrical portion for accommodating the projection, and the rotating member is provided with a bump which is arranged in a wrong phase
  • the biasing member is a torsion spring that fits over the rotating shaft of the rotating member. It can be seen from the above that the torsion spring can apply pressure to the bump to make it contact with the cylindrical portion under pressure, so that during the transportation of the developing cartridge, the rotating member will remain in its initial position without deviation, and the detecting member is improved. Detection stability. When the gear is rotated to the opening groove of the cylindrical portion and the convex block, the rotating member rotates under the biasing force of the torsion spring, so that the large diameter portion of the rotating member contacts the gear, and then the rotating member rotates by the gear, thereby realizing Smooth rotation of the rotating member.
  • the end cap is disposed on the casing, and the rotating member and the gear are located between the end wall and the end cap. As can be seen from the above, the end cap can function to protect the rotating member and the gear.
  • the detecting member is disposed on the end cover, and the end cover is provided with a limiting slot for restricting movement of the detecting member, and when the rotating member rotates, the protruding block pushes the detecting member to move along the limiting slot.
  • the detecting member is disposed on the end cover instead of the rotating member, so that the structure of the rotating member is simpler, so that the cost of the entire developing box is reduced, and the limiting groove is arranged on the end cover to move the detecting member along the limiting slot, so that The movement of the detecting piece is smoother.
  • the casing is provided with a second biasing member for holding the detecting member in the initial position. After the detection is completed, the detecting member can be returned to its original position by the second biasing member, thereby making the developing cartridge structure more compact.
  • the outer circumference of the clutch wheel is provided with a rubber ring
  • the elastic friction layer is a part of the outer circumference of the large diameter rubber ring.
  • the use of a rubber ring makes the setting of the elastic friction layer simpler and more convenient.
  • the present invention has an advantage that the developing cartridge to which the rotating member is mounted has a simple structure and a low cost.
  • Figure 1 is a structural view of an embodiment of the present invention
  • FIG. 2 is a structural view of an end cover and a detecting member in an embodiment of the present invention
  • FIG. 3 is a structural diagram of a driving end in an embodiment of the present invention.
  • Figure 4 is a view showing the positional relationship between the rotating member and the detecting member in the embodiment of the present invention.
  • Figure 5 is a structural view of a gear and a rotating member in an embodiment of the present invention.
  • Figure 6 is a structural view showing another perspective of the gear in the embodiment of the present invention.
  • Figure 7 is a structural view showing another perspective of the rotating member in the embodiment of the present invention.
  • Figure 8 is a structural view of a first biasing member in an embodiment of the present invention.
  • Figure 9 is a structural view showing another perspective view of the end cap in the embodiment of the present invention.
  • Figure 10 is a structural view showing another perspective of the detecting member in the embodiment of the present invention.
  • Figure 11 is a structural view of a second biasing member in the embodiment of the present invention.
  • the casing 1 of the present embodiment has a toner accommodating portion for accommodating carbon powder, and the driving end of the casing 1 is provided with an end cover 11 having a toner accommodating portion
  • the powder supply port is provided externally, the developing roller is rotatably disposed at the powder discharge port, and the developing cartridge is detachably mounted in the electrophotographic image forming apparatus, and the toner of the toner accommodating portion passes through the developing roller to electrostatically the photosensitive member The latent image is developed.
  • the casing 1 is usually provided with a stirring frame, a powder feeding roller, a powder discharging knife and the like, and a gear train for driving the developing roller or the like is disposed at the driving end of the developing cartridge, and the developing cartridge
  • the driving force is received by the driving head 2 from the image forming apparatus to drive the gear train and the developing roller, the powder feeding roller, the stirring frame, and the like.
  • Fig. 2 shows the end cap 11 and the detecting member 5 thereon, at which time the detecting member 5 is in the initial position.
  • the end cover 11 is provided with an inclined chute 12, and the detecting member 5 is movable along the chute 12 so as to be protruded or retracted in the longitudinal direction of the developing cartridge.
  • the chute 12 is a limit groove that restricts the movement of the detecting member 5.
  • the gear train 3 shows the structure of the driving end of the developing cartridge.
  • the gear train 3 is disposed between the end wall of the casing 1 and the end cover 11, and the driving head 2 is disposed at the end of a gear in the gear train 3, and is rotatably fixed to the end wall.
  • the outer rotating member 4 is disposed adjacent to the gear 31 in the gear train 3, and the rotating shaft of each gear in the gear train 3 is parallel to the rotating shaft of the rotating member 4, and the axial direction coincides with the longitudinal direction of the developing cartridge.
  • the gear 31 is a drive gear that drives the agitating member, it being understood that the rotating member 4 may be disposed adjacent to any of the gear trains 3.
  • Fig. 5 shows the positional relationship of the gear 31 and the rotating member 4 when the developing cartridge is a brand new cartridge.
  • the gear 31 includes a gear portion 32 that transmits a driving force to the rotating member 4, a gear portion 33 that receives a driving force from a gear in the gear train 3, and a cylindrical portion 34 therebetween.
  • the cylindrical portion 34 is provided with an opening groove 35;
  • the rotating member 4 includes a clutch wheel having a large diameter portion 42 and a small diameter portion 43, the outer circumference of the clutch wheel is a rubber ring 44, and the push block 41 is disposed at the clutch wheel near the end cover
  • the bump 45 is disposed on the side close to the casing 1 , and the push block 41 and the bump 45 are offset from the rotation axis of the rotating member 4 and are arranged in a wrong phase, that is, the push block 41 and the bump 45 are perpendicular to the axial direction.
  • the direction is not in the same position.
  • the barrel 46 is disposed at the center of the rotating member 4 and extends in the axial direction.
  • the torsion spring 47 as the first biasing member embodiment is sleeved on the outer side of the barrel 46 near the casing portion. In the state shown in FIG. 45 abuts against the cylindrical portion 34 under the biasing force of the torsion spring 47.
  • the torsion spring 47 has two end portions 48, 49, wherein the end portion 48 is fixed to the rotating member and the end portion 49 is fixed to the casing.
  • the end cover 11 is provided with a sliding groove 12 which is inclined along the longitudinal direction of the casing, and a mounting guide 13 which is sleeved outside the shaft cylinder 46 of the rotating member 4 for fixing as a second bias.
  • the fixing post 14 of the torsion spring 6 of the embodiment and the fixing member 15 of the one end portion 61 of the fixed torsion spring 6, the detecting member 5 is disposed on the chute 12, and has a detecting end 51 detected by the image forming apparatus when moving to the detecting position.
  • the torsion spring 6 applies a biasing force for holding the detecting member 5 at the initial position, and in the initial position, the detecting member 5 is located at one end of the chute 12 close to the casing 1.
  • the driving head 2 receives the driving force to rotate, and the entire gear train 3 is rotated, so that the gear 31 rotates, and the projection 45 of the rotating member 4 and the cylindrical portion 34 of the gear 31 are rotated.
  • the rotating member 4 cannot be rotated by the biasing force of the torsion spring 47 until the gear 31 rotates until the opening groove 35 of the cylindrical portion 34 faces, at which time the operation of the gear train 3 is relatively stable, and the bump 45 is not Then, the cylindrical portion 34 abuts and enters the opening groove 35, and the rotating member 4 rotates under the biasing force of the torsion spring 47, so that the large diameter portion 42 of the clutch wheel faces the gear 31, and the tooth top of the gear 31 With the interference fit, the rotating member 4 is further rotated by the friction gear 31, and the push block 41 pushes the pushed end 52 of the detecting member 5, so that the detecting member 5 moves along the sliding groove 12 away from the casing 1 against the biasing force of the torsion spring 6.
  • the pushing block 41 is disengaged from the pushed end 52 of the detecting member 5, and the detecting member is twisted
  • the spring 6 moves along the chute 12 to the initial position under the biasing force.
  • the rotating member 4 When the used developing cartridge is again mounted to the electrophotographic image forming apparatus, the rotating member 4 is no longer rotated by contact with the gear 31, and the detecting member 5 is also held at its initial position, so that the developing cartridge is detected to be not brand new.
  • the torsion spring 47 as a biasing member applies a biasing force to the rotating member 4. After the rotating member 4 is rotated by the biasing force and further driven by the gear 31, the torsion spring 47 will no longer apply a biasing force to the rotating member 4.
  • the biasing member is not limited to the form of a torsion spring.
  • a spring piece or the like may be disposed on the casing, and the projection 45 of the rotating member 4 may be forced to abut against the cylindrical portion 34 of the gear 31. After the piece 4 is rotated, the elastic piece can be separated from the rotating piece.
  • the torsion spring that applies the biasing force to the detecting member 5 can also be replaced with other mechanisms capable of applying a biasing force.
  • the rubber ring 44 which provides the elastic friction layer for the large diameter portion of the rotating member may be replaced by other structures or adhered only to the large diameter portion.
  • the detecting member can also be directly disposed on the rotating member.
  • the clutch wheel of the rotating member cooperates with the gear to move the detecting member to realize the detecting of the detecting member by the image forming apparatus, and the rotating member structure having the large diameter portion and the small diameter portion is compared with the detecting wheel with the missing tooth portion.
  • the bump is in contact with the cylindrical portion of the gear so that when the gear starts to rotate, the large diameter portion does not contact the gear.
  • the rotating member Since the bump abuts against the cylindrical portion, the rotating member cannot rotate, only when the cylindrical portion rotates to the open slot thereof When facing the bump, the rotating member can be rotated under the biasing force of the biasing member, and the large diameter portion is in contact with the gear, and then the rotating member is rotated by the gear to push the detecting member to move and the imaging device detects it. Therefore, after the gear that drives the rotating member rotates for a while, the gear train of the developing cartridge rotates smoothly, and the detecting member moves, so that the detecting member is not easily damaged.

Abstract

L'invention porte sur une cartouche de développement, comprenant : un corps (1) de cartouche comportant une partie renfermant de la poudre de carbone qui contient la poudre de carbone ; un rouleau de développement susceptible de porter la poudre de carbone pour développer des images électrostatiques latentes ; un pignon (31) agencé à l'extérieur d'une paroi d'extrémité du corps (1) de cartouche ; et un élément de rotation (4) agencé à l'extérieur de la paroi d'extrémité. L'élément de rotation (4) comprend un pignon d'embrayage comportant une partie de petit diamètre (43), susceptible d'être ajustée avec jeu sur le dessus de pignon du pignon (31), et une partie de grand diamètre (42) susceptible d'être ajustée à force sur le dessus de pignon du pignon (31). La partie de grand diamètre (42) comprend sur sa périphérie une couche élastique de frottement (44). Un côté du pignon d'embrayage éloigné du corps (1) de cartouche est pourvu d'un bloc de poussée (41) qui fait saillie dans la direction radiale. Un élément de détection (5) est susceptible d'être poussé par le bloc de poussée (41) pour se déplacer dans la direction longitudinale par rapport au corps (1) de cartouche. Le pignon (31) est pourvu coaxialement d'une partie cylindrique (34). Une fente d'ouverture (35) destinée à recevoir un bloc saillant (45) est ménagée sur la périphérie de la partie cylindrique (34). Le bloc saillant (45), agencé en quinconce par rapport au bloc de poussée (41) sur la circonférence et susceptible de venir en butée contre la partie cylindrique (34), est agencé sur l'élément de rotation (4). Un élément de pression de sollicitation (47) appliquant une pression de sollicitation sur l'élément de rotation (4) amène le bloc saillant (45) au contact de la partie cylindrique (34) sous l'effet de la pression de sollicitation. À ce stade, la partie de grand diamètre (42) n'est pas au contact du pignon (31). La partie de grand diamètre (42) vient au contact du pignon (31) lorsque le bloc saillant (45) se loge dans la fente d'ouverture (35).
PCT/CN2015/089641 2014-12-30 2015-09-15 Cartouche de développement WO2016107214A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201420859164.5 2014-12-30
CN201420859164.5U CN204347444U (zh) 2014-12-30 2014-12-30 显影盒

Publications (1)

Publication Number Publication Date
WO2016107214A1 true WO2016107214A1 (fr) 2016-07-07

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ID=53230702

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/089641 WO2016107214A1 (fr) 2014-12-30 2015-09-15 Cartouche de développement

Country Status (2)

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CN (1) CN204347444U (fr)
WO (1) WO2016107214A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018054997A (ja) * 2016-09-30 2018-04-05 ブラザー工業株式会社 現像カートリッジ

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204347444U (zh) * 2014-12-30 2015-05-20 珠海天威飞马打印耗材有限公司 显影盒
JP6604126B2 (ja) 2015-10-02 2019-11-13 ブラザー工業株式会社 現像剤カートリッジ
EP3187940A4 (fr) * 2015-10-30 2017-08-30 Brother Kogyo Kabushiki Kaisha Engrenage de détection et cartouche de développement
CN113485079A (zh) * 2021-07-02 2021-10-08 珠海天威飞马打印耗材有限公司 碳粉盒及其检测轮组件的工作方法
CN117130244A (zh) * 2022-05-26 2023-11-28 珠海纳思达信息技术有限公司 一种显影盒

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102331699A (zh) * 2011-09-23 2012-01-25 珠海天威飞马打印耗材有限公司 显影盒
CN102478776A (zh) * 2010-11-30 2012-05-30 兄弟工业株式会社 盒
CN102968030A (zh) * 2011-08-31 2013-03-13 兄弟工业株式会社 能检测盒是否为新安装的图像形成设备
CN103149817A (zh) * 2013-03-22 2013-06-12 珠海天威飞马打印耗材有限公司 激光打印机用显影盒
JP2014191161A (ja) * 2013-03-27 2014-10-06 Brother Ind Ltd 画像形成装置
CN204347444U (zh) * 2014-12-30 2015-05-20 珠海天威飞马打印耗材有限公司 显影盒

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102478776A (zh) * 2010-11-30 2012-05-30 兄弟工业株式会社 盒
CN102968030A (zh) * 2011-08-31 2013-03-13 兄弟工业株式会社 能检测盒是否为新安装的图像形成设备
CN102331699A (zh) * 2011-09-23 2012-01-25 珠海天威飞马打印耗材有限公司 显影盒
CN103149817A (zh) * 2013-03-22 2013-06-12 珠海天威飞马打印耗材有限公司 激光打印机用显影盒
JP2014191161A (ja) * 2013-03-27 2014-10-06 Brother Ind Ltd 画像形成装置
CN204347444U (zh) * 2014-12-30 2015-05-20 珠海天威飞马打印耗材有限公司 显影盒

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018054997A (ja) * 2016-09-30 2018-04-05 ブラザー工業株式会社 現像カートリッジ
US10209666B2 (en) 2016-09-30 2019-02-19 Brother Kogyo Kabushiki Kaisha Developing cartridge having protrusion provided at detection gear
EP3301519B1 (fr) * 2016-09-30 2020-06-03 Brother Kogyo Kabushiki Kaisha Cartouche de développement

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