EP4266126A2 - Cartouche de développement - Google Patents

Cartouche de développement Download PDF

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Publication number
EP4266126A2
EP4266126A2 EP23195345.6A EP23195345A EP4266126A2 EP 4266126 A2 EP4266126 A2 EP 4266126A2 EP 23195345 A EP23195345 A EP 23195345A EP 4266126 A2 EP4266126 A2 EP 4266126A2
Authority
EP
European Patent Office
Prior art keywords
gear
shaft
agitator
developing cartridge
casing
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP23195345.6A
Other languages
German (de)
English (en)
Other versions
EP4266126A3 (fr
Inventor
Nao Itabashi
Junichi Yokoi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brother Industries Ltd
Original Assignee
Brother Industries Ltd
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 Brother Industries Ltd filed Critical Brother Industries Ltd
Priority to EP23195345.6A priority Critical patent/EP4266126A3/fr
Publication of EP4266126A2 publication Critical patent/EP4266126A2/fr
Publication of EP4266126A3 publication Critical patent/EP4266126A3/fr
Pending legal-status Critical Current

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Classifications

    • 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
    • G03G21/1661—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements means for handling parts of the apparatus in the apparatus
    • G03G21/1676—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements means for handling parts of the apparatus in the apparatus for the developer unit
    • 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
    • G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
    • G03G15/0863—Arrangements for preparing, mixing, supplying or dispensing developer provided with identifying means or means for storing process- or use parameters, e.g. an electronic memory
    • 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
    • G03G21/1642—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements for connecting the different parts of the apparatus
    • G03G21/1652—Electrical connection means
    • 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
    • G03G21/1875—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 provided with identifying means or means for storing process- or use parameters, e.g. lifetime of the cartridge
    • G03G21/1896—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 provided with identifying means or means for storing process- or use parameters, e.g. lifetime of the cartridge mechanical or optical identification means, e.g. protrusions, bar codes

Definitions

  • the present invention relates to a developing cartridge.
  • an developing cartridge is capable of being attached to an image forming apparatus such as a laser printer.
  • the conventional developing cartridge for example, is disclosed in Patent publication 1.
  • the developing cartridge accommodates developer therein.
  • the developing cartridge includes an electrode for receiving electric power from the image forming apparatus.
  • the electrode can supply a developing roller with the received electric power from the image forming apparatus.
  • the developing cartridge also includes a coupling.
  • the coupling is configured to receive driving force from the image forming apparatus.
  • the developing cartridge disclosed in the Patent publication 1 further includes a detection gear.
  • the detection gear is a gear for transmit, to the image forming apparatus, information representing one or more of specifications of the developing cartridge or information representing as to whether the developing cartridge is a new developing cartridge or not.
  • a developing cartridge disclosed in Patent publication 2 includes a storage medium (e.g., IC chip).
  • the storage medium can store information representing, for example, a number of printing pages.
  • the developing cartridge disclosed in the Patent publication 2 includes a cartridge-side electrical contact portion provided at a contact portion of the detection gear.
  • the coupling, the detection gear and the IC chip are positioned at a first side surface of a casing of the developing cartridge, and the first side surface is positioned at one side of the casing.
  • the first side surface becomes larger because a lot of components (e.g., the coupling, the detection gear and the IC chip) have to be positioned at the first side surface. That causes the developing cartridge to have a large size.
  • the image forming apparats also includes a driving unit configured to transmit the driving force to the coupling, an actuator configured to detect the detection gear, and an electrical contact portion configured to read information from the IC chip at an inner surface of the image forming apparatus and the inner surface faces the first side surface of the developing cartridge. Therefore, configurations of the inner surface facing the first side surface may be complex structures and that may cause the image forming apparatus to have a large size.
  • the storage medium e.g., IC chip
  • a developing cartridge comprises: a casing configured to accommodate developer therein, the casing extending in the first direction; a coupling rotatable about a first axis extending in the first direction, the coupling being positioned at one side of the casing in the first direction; a detection gear rotatable about a second axis extending in the first direction, the detection gear being positioned at another side of the casing in the first direction; a storage medium including an electric contact surface, the electric contact surface being positioned at the one side of the casing in the first direction.
  • the coupling, the detection gear and the electric contact surface of the storage medium can be efficiently arranged at the developing cartridge because the coupling and the electric contact surface are positioned at the one side of the casing in the first direction and the detection gear is positioned at the another side of the casing in the first direction.
  • the storage medium is positioned at the one side of the casing in the first direction.
  • the coupling, the detection gear, the electrical contact surface of the storage medium, and the storage medium are efficiently arranged at the developing cartridge because the storage medium is positioned at the one side of the casing in the first direction.
  • the detection gear is rotatable according to rotation of the coupling.
  • first element is described to be rotatable according to rotation of a second element, then this means that the rotation of the second element results in rotation of the first element.
  • the developing cartridge further comprises a first shaft extending in the first direction, the first shaft being rotatable according to rotation of the coupling, and the detection gear is rotatable according to rotation of the first shaft.
  • the developing cartridge further comprises an agitator including the first shaft, the agitator being rotatable with the first shaft according to rotation of the coupling, and the detection gear is rotatable according to rotation of the agitator.
  • the detection gear is positioned at one side of the first shaft in a second direction perpendicular to the first direction and the coupling is positioned at the one side of the first shaft in the second direction.
  • the coupling further includes a coupling gear rotatable with the coupling
  • the agitator further includes a first agitator gear mounted to the first shaft, the first agitator gear being rotatable with the first shaft, and the first agitator gear being positioned at the one side of the casing in the first direction, and the coupling gear meshes with the first agitator gear.
  • the developing cartridge further comprises a first idle gear positioned at the one side of the casing in the first direction
  • the coupling further includes a coupling gear rotatable with the coupling, and the coupling gear meshing with the first idle gear
  • the agitator further includes a first agitator gear mounted to the first shaft, the first agitator gear being rotatable with the first shaft, the first agitator gear being positioned at the one side of the casing in the first direction, and the first agitator gear meshing with the first idle gear.
  • the agitator further includes a second agitator gear mounted to the first shaft, the second agitator gear being rotatable with the first shaft, and the second agitator gear being positioned at the another side of the casing in the first direction, and the second agitator gear meshes with the detection gear.
  • the developing cartridge further comprises a second idle gear positioned at the another side of the casing in the first direction and the second idle gear meshing with the detection gear
  • the agitator further includes a second agitator gear mounted to the first shaft, the second agitator gear being rotatable with the first shaft, the second agitator gear being positioned at the another side of the casing in the first direction, and the second agitator gear meshing with the second idle gear.
  • the developing cartridge further comprises a developing roller rotatable about a rotational axis extending in the first direction, the developing roller including a roller shaft extending in the first direction and an electrode being electrically connected to the roller shaft, and the electrode being positioned to the another side of the casing in the first direction.
  • the electrode further includes a second shaft extending in the first direction, the detection gear is rotatable about the second shaft, and the detection gear covers a portion of an outer peripheral surface of the second shaft.
  • the developing cartridge further comprises a gear cover covering a portion of the detection gear, the gear cover being positioned at the another side of the casing in the first direction.
  • the casing includes a first outer surface positioned at the one side of the casing in the first direction and a second outer surface positioned at the another side of the casing in the first direction, the electric contact surface is positioned at the first outer surface.
  • the storage medium is positioned at the first outer surface.
  • the detection gear is positioned at the second outer surface.
  • the developing cartridge further comprises a second shaft positioned at the second outer surface, the second shaft extending in the first direction along the second axis, the detection gear is rotatable about the second shaft.
  • the second shaft extends from the second outer surface of the casing.
  • the casing further include a through-hole penetrating the second outer surface and a cap attached to the through-hole, the second shaft extends from the cap.
  • the developing cartridge further comprises a developing roller rotatable about a rotational axis extending in the first direction, the developing roller including a developing roller shaft extending in the first direction and an electrode electrically connected to the developing roller shaft, and the electrode being positioned at the another side of the casing in the first direction.
  • the coupling, the detection gear, the electric contact surface of the storage medium and the electrode can be efficiently arranged at the developing cartridge because the electrode is positioned at the another side of the casing in the first direction. Furthermore, an electric interference between the electrode and the electrical contact surface is reduced because the electrical contact surface is positioned at the one side of the casing in the first direction and the electrode is positioned at the another side of the casing in the first direction.
  • the electrode includes the second shaft, the detection gear is rotatable about the second shaft, and the detection gear covers a portion of an outer peripheral surface of the second shaft.
  • the detection gear is rotatable about the second shaft which the electrode includes.
  • the detection gear and the electrode are efficiently arranged at the another side of the casing in the first direction because a portion of the electrode is used for the second shaft and the detection gear is rotatable about the second shaft.
  • the developing cartridge further comprises a gear cover covering a portion of the detection gear, the gear cover being positioned at the second outer surface.
  • the coupling is positioned at the first outer surface.
  • the coupling further includes a coupling gear rotatable with the coupling
  • the agitator further includes a first agitator gear mounted to the first shaft, the first agitator gear being rotatable with the first shaft, and the first agitator gear being positioned at the first outer surface, and the coupling gear meshes with the first agitator gear.
  • the developing cartridge further comprises a first idle gear positioned at the first outer surface
  • the coupling further includes a coupling gear rotatable with the coupling, and the coupling gear meshing with the first idle gear
  • the agitator further includes a first agitator gear mounted to the first shaft, the first agitator gear being rotatable with the first shaft, the first agitator gear being positioned at the first outer surface, and the first agitator gear meshing with the first idle gear.
  • the agitator further includes a second agitator gear mounted to the first shaft, the second agitator gear being rotatable with the first shaft, the second agitator gear being positioned at the second outer surface, and the second agitator gear meshing with the detection gear.
  • the developing cartridge further comprises a second idle gear positioned at the second outer surface, and the second idle gear meshing with the detection gear
  • the agitator further includes a second agitator gear mounted to the first shaft, the second agitator gear being rotatable with the first shaft, the second agitator gear being positioned at the second outer surface, and the second agitator gear meshing with the second idle gear.
  • the first shaft includes a first end portion in the first direction and a second end portion separated from the first end portion in the first direction, the first end portion penetrates through the first outer surface, and the first agitator gear is mounted to the first end portion.
  • the first shaft includes a first end portion in the first direction, and a second end portion separated from the first end portion in the first direction, the second end portion penetrates through the second outer surface, and the second agitator gear is mounted to the second end portion.
  • the coupling includes a recessed portion or concave portion configured to receive a driving force.
  • the detection gear has a shape representing information regarding a specification of the developing cartridge.
  • the specification represents the number of printable pages by the developing cartridge.
  • the detection gear is rotatable between a first position representing that the developing cartridge is in an unused state and a second position representing that the developing cartridge is in an used state.
  • the detection gear includes a plurality of gear teeth, the plurality of gear teeth are provided on a portion of an outer peripheral surface of the detection gear.
  • the detection gear includes a protrusion extending in the first direction.
  • the detection gear includes a plurality of the protrusions.
  • the storage medium stores information regarding the developing cartridge.
  • the storage medium is positioned at the one side of the casing in the first direction, and the storage medium includes the electric surface.
  • the storage medium and the electric contact surface are efficiently arranged at the one side of the casing in the first direction because the storage medium includes the electric contact surface.
  • first direction an extending direction of a rotation axis of a developing roller
  • second direction A direction perpendicular to the first direction
  • the second direction is defined by a virtual line connecting an agitator shaft 21 of an agitator and a roller shaft 32 of a developing roller 30.
  • Figs. 1 to 5 are perspective views of a developing cartridge 1.
  • Fig. 6 is a perspective view of positions of a plurality of gears relative to the developing cartridge 1.
  • the developing cartridge 1 is used for an electro-photographic type image forming apparatus (for example, a laser printer or a LED printer), and is a unit for supplying developer (toner, for example) to a photosensitive drum. As shown in Fig. 1 , the developing cartridge 1 is attached to a drawer unit 90 of the image forming apparatus.
  • the drawer unit 90 When the developing cartridge 1 is replaced, the drawer unit 90 is drawn out from a front surface of the image forming apparatus.
  • the drawer unit 90 includes four cartridge holding portions 91, and the developing cartridge 1 is attached to four cartridge holding portions 91, respectively.
  • Each of four cartridge holding portions 91 includes a photosensitive drum.
  • each of the four developing cartridges 1 is configured to accommodate developer therein, and the color of the developer is different colors (cyan, magenta, yellow, and black, for example) among the four developing cartridges respectively.
  • the number of the developing cartridges 1 that can be attached to the drawer unit 90 may be 1 to 3 or be greater than or equal to 5.
  • each developing cartridge 1 includes a casing 10, an agitator 20, a developing roller 30, a first gear portion 40, a second gear portion 50, and an IC (Integrated Circuit) chip assembly 60.
  • the casing 10 is a case configured to accommodate therein developer (toner, for example) for an electro-photographic printing.
  • the casing 10 includes a first outer surface 11 and a second outer surface 12.
  • the first outer surface 11 is an outer surface being positioned at one side of the casing 10 in the first direction.
  • the second outer surface 12 is an outer surface being positioned at another side of the casing 10 in the first direction.
  • the first outer surface 11 and the second outer surface 12 are separated from each other in the first direction.
  • the first gear portion 40 and the IC chip assembly 60 are positioned at the first outer surface 11.
  • the second gear portion 50 is positioned at the second outer surface 12.
  • the casing 10 extends in the first direction between the first outer surface 11 and the second outer surface 12.
  • the developing chamber 13 for accommodating the developer is provided in the casing 10.
  • the first direction may be an extending direction of the casing 10.
  • the first direction may be an extending direction of the developing roller 30.
  • the agitator 20 is one of an agitating devices, the agitator extends in the first direction.
  • the agitator 20 includes an agitator shaft 21 and an agitation blade 22.
  • the agitator shaft 21 extends along the rotation axis 81 extending in the first direction.
  • the agitator shaft 21 has a columnar shape extending in the first direction.
  • the agitator shaft 21 is an example of a first shaft.
  • the agitation blade 22 expands outward from the agitator shaft 21 in a radial direction.
  • the agitation blade 22 is positioned inside a developing chamber 13 of the casing 10.
  • the agitator shaft 21 includes a first end portion 211 and a second end portion (not shown in the figures).
  • the first end portion 211 is positioned at one end portion of the agitator shaft 21 in the first direction.
  • the first end portion 211 penetrates through the first outer surface 11 of the casing 10.
  • a first agitator gear 44 described later is mounted to the first end portion 211. More specifically, the first agitator gear 44 is mounted to the first end portion 211 so as to be incapable of rotating relative to the first end portion 211.
  • the first agitator 44 is positioned at the first outer surface 11.
  • the second end portion is positioned at another end portion of the agitator shaft 21 in the first direction.
  • the second end portion penetrates through the second outer surface 12 of the casing 10.
  • a second agitator gear 51 described later is mounted to the second end portion. More specifically, the second agitator gear 51 is mounted to the second end portion so as to be incapable of rotating relative to the second end portion.
  • the second agitator 51 is positioned at the second outer surface 12.
  • the agitator shaft 21 and the agitation blade 22 are rotatable with the first agitator gear 44 and the second agitator gear 51.
  • the developer which is accommodated in the developing chamber 13 is agitated by rotation of the agitation blade 22.
  • the agitator may include an agitation film.
  • the developing roller 30 is a roller rotatable about a rotation axis 82 extending in the first direction.
  • the developing roller 30 according to the present embodiment includes a roller body 31 and a roller shaft 32.
  • the roller body 31 is a cylinder-shaped member extending in the first direction.
  • the roller body 31 is made of an elastic rubber, for example.
  • the roller shaft 32 is a cylindrical member penetrating through the roller body 31 in the first direction.
  • the roller shaft 32 is made of metal or conductive resin.
  • the roller body 31 is fixed to the roller shaft 32 so as to be incapable of rotating relative to the roller shaft 32. When the roller shaft 32 rotates, the roller body 31 rotates together with the roller shaft 32.
  • the roller shaft 32 may not penetrate through the roller body 31 in the first direction.
  • each of a pair of roller shafts 32 may extend from each end of the roller body 31 in the first direction.
  • roller shaft 32 in the first direction is mounted to a developing gear 42 described later so as to be incapable of rotating relative to the developing gear 42. Accordingly, the roller shaft 32 rotates with rotation of the developing gear 42 and the roller body 31 also rotates with the roller shaft 32, when the developing gear 42 rotates
  • the second direction may be defined by a direction parallel to a virtual line connecting the agitator shaft 21 and the roller shaft 32 at the same position in the first direction.
  • the roller shaft 32 is positioned at one side of the agitator shaft 21 in the second direction.
  • the agitator shaft 21 is positioned at another side of the roller shaft 32 in the second direction.
  • the second direction is perpendicular to the first direction.
  • the casing 10 has an opening 14.
  • the opening 14 communicates between the developing chamber 13 and an exterior of the developing chamber 13.
  • the opening 14 is positioned at one end portion of the casing in the second direction.
  • the developing roller 30 is positioned at the opening14. That is, the developing roller 30 is positioned closer to one side of the casing 10 than to the center of the casing 10 in the second direction.
  • the developer When the developing cartridge 1 receives a driving force, the developer is supplied from the developing chamber 13 in the casing 10 onto an outer peripheral surface of the developing roller 30 via a supply roller (omitted in the figure). At this time, the developer is tribocharged between the supply roller and the developing roller 30. On the other hand, bias voltage is applied to the roller shaft 32 of the developing roller 30. Accordingly, static electricity between the roller shaft 32 and the developer moves the developer toward the outer peripheral surface of the roller body 31.
  • the developing cartridge 1 further includes a layer thickness regulation blade which is omitted in the figure.
  • the layer thickness regulation blade regulates a thin layer of the developer supplied onto the outer peripheral surface of the roller body 31 so that the thickness of the developer becomes constant. Then, the developer on the outer peripheral surface of the roller body 31 is supplied to the photosensitive drum of the drawer unit 90. At this time, the developer moves from the roller body 31 to the photosensitive drum on the basis of an electrostatic latent image formed on the outer peripheral surface of the photosensitive drum. Accordingly, the electrostatic latent image is visualized on the outer peripheral surface of the photosensitive drum.
  • the first gear portion 40 is positioned at one end portion in the first direction of the casing 10. That is, the first gear portion 40 is positioned at the first outer surface 11.
  • Fig. 4 is a perspective view of the developing cartridge 1 in a state in which the first gear portion 40 is disassembled.
  • the first gear portion 40 includes a coupling 41, a developing gear 42, an idle gear 43, a first agitator gear 44, and a first cover 45.
  • the coupling 41, the developing gear 42, the idle gear 43 and the first agitator gear are positioned at the first outer surface 11. A plurality of gear teeth of each gear are not illustrated in Fig. 4 .
  • the coupling 41 is a gear for initially receiving the driving force applied from the image forming apparatus.
  • the coupling 41 is rotatable about a rotation axis 83 extending in the first direction.
  • the rotational axis 83 which is a rotational center of the coupling 41 is one example of a first axis.
  • the coupling 41 includes a coupling portion 411 and a coupling gear 412.
  • the coupling portion 411 and the coupling gear 412 are integral with each other and made of a resin, for example.
  • the coupling portion 411 has a coupling hole 413 recessed in the first direction.
  • the coupling hole 413 is an example of a recessed portion which configured to receive driving force from the image forming apparatus.
  • the coupling portion 411 may have a concave portion which is configured to receive driving force from the image forming apparatus.
  • the coupling gear 412 includes a plurality of gear teeth. The plurality of gear teeth are provided on an entire of an outer peripheral surface of the coupling gear 412 at equal intervals.
  • the developing gear 42 is a gear for rotating the developing roller 30.
  • the developing gear 42 is rotatable about a rotation axis extending in the first direction.
  • the developing gear 42 includes a plurality of gear teeth.
  • the plurality of gear teeth are provided on an entire of an outer peripheral surface of the developing gear 42 at equal intervals.
  • At least a portion of the plurality of gear teeth of the coupling gear 412 meshes with at least a portion of the plurality of gear teeth of the developing gear 42.
  • the developing gear 42 is mounted to the end portion of the roller shaft 32 in the first direction so as to be incapable of rotating relative to the roller shaft 32. With this construction, when the coupling gear 412 rotates, the developing gear 42 rotates with the coupling gear 412 and the developing roller 30 also rotates with the developing gear 42.
  • the idle gear 43 is a gear for transmitting rotational driving force of the coupling gear 412 to the first agitator gear 44.
  • the idle gear 43 is an example of a first idle gear.
  • the idle gear 43 is rotatable about a rotation axis 84 extending in the first direction.
  • the idle gear 43 includes a large diameter gear portion 431 and a small diameter gear portion 432.
  • the large diameter gear portion 431 and the small diameter gear portion 432 are arranged in the first direction.
  • the small diameter gear portion 432 is positioned at another side of the large diameter gear portion 431 in the first direction. That is, the small diameter gear portion 432 is positioned between the large diameter gear portion 431 and the first outer surface 11 of the casing 10.
  • the large diameter gear portion 431 is farther away from the first outer surface 11 than the small diameter gear portion 432 is.
  • a diameter of the small diameter gear portion 432 is smaller than a diameter of the large diameter gear portion 431.
  • a diameter of an addendum circle of the small diameter gear portion 432 is smaller than a diameter of an addendum circle of the large diameter gear portion 431.
  • the large diameter gear portion 431 and the small diameter gear portion 432 are integral with each other and are made of a resin.
  • the large diameter gear portion 431 includes a plurality of gear teeth, and the plurality of gear teeth are provided on an entire of an outer peripheral surface of the large diameter gear portion 431 at equal intervals.
  • the small diameter gear portion 432 includes a plurality of gear teeth, and the plurality of gear teeth are provided on an entire of an outer peripheral surface of the small diameter gear portion 432 at equal intervals.
  • the number of gear teeth of the small diameter gear portion 432 is less than the number of gear teeth of the large diameter gear portion 431.
  • At least a portion of the plurality of gear teeth of the coupling gear 412 meshes with at least a portion of the plurality of gear teeth of the large diameter gear portion 431.
  • the plurality of gear teeth of the small diameter gear portion 432 meshes with at least a portion of the plurality of gear teeth of the first agitator gear 44.
  • the coupling gear 412 rotates
  • the large diameter gear portion 431 rotates together with the coupling gear 412
  • the small diameter gear portion 432 rotates together with the large diameter gear portion 431.
  • the first agitator gear 44 rotates with the rotation of the small diameter gear portion 432.
  • the first agitator gear 44 is a gear for rotating the agitator 20 in the developing chamber 13.
  • the first agitator gear 44 is rotatable about a rotation axis 81 extending in the first direction.
  • the first agitator gear 44 includes a plurality of gear teeth, and the plurality of gear teeth are provided on an entire of an outer peripheral surface of the first agitator gear 44 at equal intervals.
  • the at least a portion of the plurality of gear teeth of the small diameter gear portion 432 meshes with the at least a portion of the plurality of gear teeth of the first agitator gear 44.
  • the first agitator gear 44 is mounted to one end portion of the agitator shaft 21 in the first direction so as to be incapable of rotating relative to the agitator shaft 21.
  • the idle gear 43 is positioned between the coupling gear 412 and the first agitator gear 44, however, the idle gear 43 may be omitted. That is, the coupling gear 412 may directly mesh with the first agitator gear 44.
  • the first cover 45 is positioned at one side of the casing in the first direction. More specifically, the first cover is positioned at the first outer surface.
  • the first cover 45 is fixed to the first outer surface 11 of the casing 10 by screws, for example.
  • the coupling gear 412, the developing gear 42, the idle gear 43, and the first agitator gear 44 are accommodated in a space between the first outer surface 11 and the first cover 45.
  • the coupling hole 413 of the coupling portion 411 is exposed to an outside of the first cover 45.
  • the first cover 45 according to the present embodiment also serves as a holder cover for holding the holder 62 of the IC chip assembly 60 described later. A structure of the first cover 45 as the holder cover will be described later in detail.
  • the second gear portion 50 is positioned at the another side of the casing 10 in the first direction. In other words, the second gear portion 50 is positioned at the second outer surface 12.
  • Fig. 5 is a perspective view of the developing cartridge 1 in which the second gear portion 50 is exploded. As illustrated in Fig. 5 , the second gear portion 50 includes a second agitator gear 51, a detection gear 52, an electrically conductive member 53, and a second cover 54. Note that, in Fig. 5 , gear teeth are not illustrated in the second agitator gear 51 and the detection gear 52.
  • the second agitator gear 51 is for transmitting rotational driving force of the agitator shaft 21 to the detection gear 52.
  • the second agitator gear 51 is rotatable about a rotation axis 81 extending in the first direction.
  • the second agitator gear 51 includes a plurality of gear teeth, and the plurality of gear teeth are provided on an entire of an outer peripheral surface of the second agitator gear 51 at equal intervals. At least a portion of the plurality of gear teeth of the second agitator gear 51 meshes with at least a portion of a plurality of gear teeth of the detection gear 52.
  • the second agitator gear 51 is mounted to the first end portion of the agitator shaft 21 in the first direction so as to be incapable of rotating relative to the agitator shaft 21. With this configuration, the second agitator gear 51 rotates with rotation of the agitator shaft 21.
  • the detection gear 52 is a gear for providing information on the developing cartridge 1 for the image forming apparatus.
  • the information on the developing cartridge 1 includes, for example, information as to whether the developing cartridge 1 is a new (unused) cartridge or a used cartridge.
  • the information on the developing cartridge 1 also includes, for example, a product specification of the developing cartridge 1.
  • the product specification of the developing cartridge 1 includes, for example, the number of sheets that can be printed with the developer accommodated in the developing cartridge 1 (i.e. sheet-yield number).
  • the detection gear 52 is rotatable about a rotation axis 85 extending in the first direction.
  • the rotational axis 85 which is a rotational center of the detection gear 52 is an example of a second axis.
  • the detection gear 52 includes a plurality of gear teeth 521, and the plurality of gear teeth 521 are provide on a portion of an outer peripheral surface of the detection gear 52. That is, the detection gear 52 is a tooth-less gear, that is, the plurality of gear teeth 521 are provide on one portion of an outer peripheral surface of the detection gear 52, the other portion of the outer peripheral surface of the detection gear 52 does not include a gear tooth.
  • the detection gear 52 When the developing cartridge 1 is unused state, at least a portion of the plurality of gear teeth of the detection gear 52 can mesh with at least a portion of the plurality of gear teeth of the second agitator gear 51. In this case, the detection gear 52 rotates together with the agitator 20 including agitator shaft 21. For this reason, the detection gear 52 rotates based on the driving force transmitted via the coupling 41 receives driving force, the coupling 41, the idle gear 43, the first agitator gear 44, the agitator 20 and the second agitator gear 51. That is the detection gear 52 is rotatable with the coupling 41.
  • the developing cartridge 1 is attached to the drawer unit 90 and the drawer unit is inserted into the inside of the image forming apparatus and accommodated in the inside of the image forming apparatus.
  • the coupling 41 receives driving force and then, the detection gear 52 can rotate by meshing with the second agitator gear 51.
  • the detection gear 52 rotates at a predetermined angle, the detection gear 52 is disengaged from the second agitator gear 51, rotation of the detection gear 52 is stopped.
  • the detection gear When the developing cartridge 1 is in the unused state, the detection gear is in a first position representing that the developing cartridge 1 is in the unused state.
  • the detection gear 52 When the detection gear 52 is in the first position, at least a portion of the plurality of gear teeth of the detection gear 52 can mesh with at least a portion of the plurality of gear teeth of the second agitator gear 51.
  • the detection gear 52 rotates from the first position and a second position. Therefore, the detection gear 52 is in the second position representing that the developing cartridge 1 is a used state, after the developing cartridge 1 starts to work.
  • the detection gear 52 When the detection gear 52 is in the second position, the detection gear 52 does not mesh with the second agitator gear 51.
  • the detection gear 52 can change between the unused state and the used state and then, the detection gear 52 cannot rotate.
  • the detection gear 52 may be configured of a movable gear that can move in the first direction.
  • the movable gear may not be limited to a partially toothless gear.
  • the movable gear includes a plurality of gear teeth, and the plurality of gear teeth are provided on an outer peripheral surface of the movable gear along the circumference of the movable gear.
  • the movable gear moves in the first direction in accordance with rotation of the movable gear, thereby the movable gear is disengaged from the second agitator gear 51.
  • the movable gear may be moved in the first direction away from the second outer surface 12 or toward the second outer surface 12.
  • the detection gear 52 cannot rotate because the detection gear 52 is disengaged from the second agitator gear 51.
  • a gear may be provided between the second agitator gear 51 and the detection gear 52.
  • the second gear portion 50 may further include a second idle gear meshing with both the second agitator gear 51 and the detection gear 52.
  • the second idle gear is positioned at the second outer surface 12. In this case, rotational driving force of the second agitator gear 51 may be transmitted to the detection gear 52 via the second idle gear.
  • the electrically conductive member 53 is electrically conductive.
  • the electrically conductive member 53 is an example of an electrode.
  • the electrically conductive member 53 is formed of a material such as electrically conductive metal or electrically conductive resin.
  • the electrically conductive member 53 is positioned at the second outer surface 12 of the casing 10.
  • the electrically conductive member 53 includes a gear shaft 531 protruding in the first direction.
  • the gear shaft 531 is positioned at the second outer surface 12.
  • the gear shaft 531 extends in the first direction from the second outer surface 12 along the rotational axis 85.
  • the rotational axis 85 is an example of a second axis.
  • the gear shaft 531 is an example of a second shaft.
  • the detection gear 52 rotates about the gear shaft 531 in a state where the detection gear 52 is supported by the gear shaft 531.
  • the electrically conductive member 53 further includes a bearing portion 532.
  • the bearing portion 532 is in contact with the roller shaft 32 of the developing roller 30.
  • a portion of the electrically conductive member 53 may be in contact with the roller shaft 32.
  • the roller shaft 32 may be in contact with the electrically conductive member 53 in a state where the roller shaft 32 is inserted into the electrically conductive member 53.
  • the drawer unit 90 includes an electrically conductive lever (not illustrated) that is in contact with the gear shaft 531 in a state where the developing cartridge 1 is attached to the drawer unit 90.
  • the image forming apparatus may include the electrically conductive lever.
  • the lever contacts the gear shaft 531, electrical connection between the lever, and the electrically conductive member 53 is established and electrical connection between the electrically conductive member 53 and the roller shaft 32 is also established.
  • the electrically conductive member 53 including the gear shaft 531 has a function of the electrode supplying the roller shaft 32 with the bias voltage (electric power).
  • the second cover 54 is positioned at the another side of the casing 20 in the first direction. More specifically, the second cover 54 is positioned at the second outer surface 12.
  • the second cover 54 is fixed to the second outer surface 12 of the casing 10 by a screw, for example. At least a portion of one or more of the second agitator gear 51 and the detection gear 52, and the electrically conductive member 53 are accommodated in a space between the second outer surface 12 and the second cover 54. Therefore, the second cover 54 covers at least a portion of the detection gear 52.
  • the second cover 54 has an opening 541. A portion of the detection gear 52 and a portion of the gear shaft 531 are exposed to an outside through the opening 541.
  • the electrically conductive lever of the drawer unit 90 contacts the detection gear 52 and the gear shaft 531 through the opening 541.
  • the detection gear 52 includes a detecting protrusion 522.
  • the detection gear 52 covers a portion of an outer peripheral surface of the gear shaft 531.
  • the protrusion 522 is positioned at another side the plurality ogear teeth 521 in the first direction.
  • the detecting protrusion 522 protrudes in the first direction.
  • the detecting protrusion 522 has a circular arc shape extending along a portion of an addendum circle of the detection gear about the rotation axis of the detection gear 52. Note that the detecting protrusion 522 covers a portion of an outer peripheral surface of the gear shaft 531.
  • the detecting protrusion 522 is rotatable with the detection gear 52.
  • the contact state between the lever and the gear shaft 531 changes according to the shape of the detection gear 52. More specifically, the contact state between the lever and the gear shaft 531 changes according to the shape of the detecting protrusion 522 because the detecting protrusion 522 pass through between the lever and the gear shaft according to the rotation of the detection gear 52. Alternatively, the contact state between the lever and the gear shaft 531 changes according to the number of the detecting protrusions 522 which are provided with the detection gear 52 because one or more of detecting protrusions 522 pass through between the lever and the gear shaft according to the rotation of the detection gear 52.
  • the image forming apparatus recognizes the change in the contact state between the lever and the gear shaft 531 to identify whether the attached developing cartridge 1 is new or used and/or the product specification of the mounted developing cartridge 1. That is, the detection gear 52 has a shape representing information regarding a specification of the developing cartridge.
  • the specification of the developing cartridge may represent a color of the developer accommodated in the developing cartridge.
  • the detection gear 52 may have a shape representing other information representing a color of the developer accommodated in the developing cartridge.
  • the method for detecting the information on the developing cartridge 1 using the detection gear 52 is not limited to detection of electrical conduction.
  • movement of the lever may be optically detected.
  • the detecting protrusion 522 may be formed to have different circumferential position and length from those in the present embodiment.
  • the detection gear 52 may have a plurality of detecting protrusions 522.
  • the shape of the detection gear 52 may vary according to the product specification of the developing cartridge 1 such as the number of printable sheets. More specifically, the number of the detecting protrusions 522 may be differentiated among a plural type of the developing cartridges, and the product specification regarding each of the developing cartridges may be identified based on the number of the detecting protrusions 522.
  • circumferential intervals between the plurality of detecting protrusions 522 may be differentiated among the plural type of the developing cartridges.
  • a circumferential length of each detecting protrusion 522 and/or a radial length of each detecting protrusion 522 may be differentiated based on the product specification regarding each of the developing cartridges. In this way, variations in the number of the detecting protrusions 522 and/or circumferential positions of the each of the detecting protrusion 522 enables the image forming apparatus to identify the product specification regarding each of the developing cartridges.
  • the detection gear 52 may be configured of a plural components.
  • the detecting protrusion 522 and the detection gear 52 may be different components.
  • the detection gear 52 may include a detection gear body and a supplemental member that shifts its position relative to the detection gear body in accordance with rotation of the detection gear body.
  • the supplemental member changes between a first position in which the supplemental member is in contact with the lever and a second position in which the supplemental member is not in contact with the lever in accordance with shifting the position of the supplemental member relative to the detection gear body.
  • the supplemental member may change the position of the lever.
  • the detection gear 52 may include a cam, and the cam may contact the detecting protrusion 522.
  • the cam rotates together with rotation of the detection gear 52, and the rotating cam contacts the detecting protrusion 522. This causes the detecting protrusion 522 to move relative to the detection gear 52.
  • the detecting protrusion 522 may be rotatably attached to a shaft provided at the second outer surface 12 or the second cover 54.
  • the detecting protrusion 522 may have a shaft, and the shaft of the detecting protrusion 522 may be inserted into a hole formed in the second outer surface 12 or the second cover 54 so that the detecting protrusion 522 is rotatably supported by the second outer surface 12 or the second cover 54.
  • the gear shaft 531 extends in the first direction from the second outer surface 12.
  • the gear shaft 531 does not need to be in direct contact with the second outer surface 12.
  • the casing 10 may have a through-hole penetrating the second outer surface 12 and a cap attached or fitted with the through-hole, and a gear shaft may extend from the cap in the first direction.
  • the cap includes the gear shaft protruding in the first direction toward the detection gear 52, and the detection gear 52 rotates about the gear shaft 531 in a state where the detection gear is supported by the gear shaft 531.
  • the IC chip assembly 60 is positioned at the one side of the casing in the first direction.
  • the IC chip assembly 60 is positioned at the first outer surface 11 of the casing 10.
  • Fig. 6 is an exploded perspective view of the IC chip assembly 60.
  • Fig. 7 is a cross-sectional view of the IC chip assembly 60 taken along a plane perpendicular to the first direction.
  • the IC chip assembly 60 includes an IC (Integrated Circuit) chip 61 as a storage medium and a holder 62 for holding the IC chip 61.
  • the holder 62 is held to the first cover 45 at one end of the casing 10 in the first direction.
  • the IC chip 61 stores various information on the developing cartridge 1.
  • the IC chip 61 includes an electric contact surface 611.
  • the electric contact surface 611 is made of electrically conductive metal.
  • the electric contact surface 611 is positioned at one side of the casing 10 in the first direction.
  • the electric contact surface is positioned at the first outer surface.
  • the drawer unit 90 includes an electric connector.
  • the electric connector is made of metal, for example.
  • the electric connector of the drawer unit 90 contacts the electric contact surface 611 when the developing cartridge 1 is attached to the drawer unit 90.
  • the image forming apparatus can perform at least one of reading information from the IC chip 61 and writing information in the IC chip 61.
  • both of IC chip 61 and the electric contact surface 611 of the IC chip 61 are positioned at the one side of the casing in the first direction.
  • the holder 62 includes a boss 621a, a boss 621b, and a boss 621c.
  • Each of the boss 621a and boss 621b extends in the first direction toward the first cover 45 from a surface of the holder 62 opposite to a surface thereof facing the casing 10.
  • the boss 621a and boss 621b are aligned in the second direction.
  • the boss 621c extends in the first direction toward the casing 10 from the surface of the holder 62 facing the casing 10.
  • the first cover 45 has a through-hole 451a and a through-hole 451b.
  • the through-hole 451a and through-hole 451b penetrate the first cover 45 in the first direction, respectively.
  • the through-hole 451a and through-hole 451b are aligned in the second direction.
  • the casing 10 includes a recessed portion 15.
  • the recessed portion 15 is recessed in the first direction on the first outer surface 11 of the casing 10.
  • the boss 621a is inserted into the through-hole 451a.
  • the boss 621b is inserted into the through-hole 451b.
  • the boss 621c is inserted into the recessed portion 15.
  • the through-hole 451a has a dimension (inner dimension) larger than a dimension (outside dimension) of the boss 621a.
  • the through-hole 451b has a dimension (inner dimension) larger than a dimension (outside dimension) of the boss 621b.
  • the recessed portion 15 has a dimension (inner dimension) larger than a dimension (outer dimension) of the boss 621c.
  • the holder 62 can move with the bosses 621a, 621b and 621c in direction perpendicular to the first direction relative to the casing 10 and the first cover 45.
  • the holder 62 moves between the first cover 45 and the first outer surface 11
  • the holder 62 may include a single boss, or equal to or more than three bosses.
  • the first cover 45 may have a single through-hole, or equal to or more than three through-holes.
  • the bosses 621a, 621b and 621c may have a circular columnar shape or a rectangular columnar shape, respectively.
  • the first cover 45 may include one or more of recesses to have the bosses 621a and/or 621b inserted thereinto.
  • a projected area of the developing cartridge 1 in the first direction should be smaller in order to down size of the image forming apparatus. That is the first outer surface 11 should be smaller in order to down size of the image forming apparatus. That is the second outer surface 12 also should be smaller in order to down size of the image forming apparatus.
  • the detection gear 52 is positioned at the another side of the casing 10 in the first direction, and the coupling 41 and the electric contact surface 611 of the IC chip 61 are also positioned at the one side of the casing 10 in the first direction. Therefore, the first outer surface 11 and the second outer surface 12 become smaller because the coupling 41 and the electric contact surface 611 are positioned at the first outer surface 11 and the detection gear 52 is positioned at the second outer surface 12 which is different from the first outer surface 11.
  • the coupling 41 is positioned at one side of the agitator shaft 21 in the second direction, and the coupling 41 is positioned at the one side of the casing in the first direction.
  • the detection gear 52 is positioned at the one side of the agitator shaft 21 in the second direction and the detection gear is positioned at the another side of the casing in the first direction. Therefore, the coupling 41 and the detection gear are positioned at the same side of the agitator shaft 21 in the second direction. For this reason, a length of the developing cartridge in the second direction can shorten. Accordingly, the developing cartridge 1 can downsize in the second direction.
  • the image forming apparatus can also downsize in the second direction.
  • the detection gear 52 and the electrically conductive member 53 should be the same outer surface (either the first outer surface 11 or the second outer surface 12) of the casing 10, because the detection gear 52 is supported by the electrically conductive member 53.
  • the electrically conductive member 53 (an example of the electrode) receives high electrical voltage (electrical power).
  • IC chip 61 is affected by, for example, high-frequency noise, if a distance between the electrically conductive member 53 and the electric contact surface 611 of the IC chip 61 is too short or a distance between the electrically conductive member 53 and the IC chip 61 is too short.
  • the detection gear 52 and the electrically conductive member 53 are positioned at the second outer surface 12 which is positioned at opposite side of the first outer surface 11 in the first direction, and one or more of the electric surface 611 and the IC chip 61 is positioned at the first outer surface 11. Accordingly, an electrical interference between the between the electrically conductive member 53 and the electric contact surface 611 can be reduced. Alternatively, an electrical interference between the between the electrically conductive member 53 and the IC chip 61 can be reduced. For example, the high-frequency noise on the IC chip 61 can be reduced based on charging the high electrical voltage (electrical power) to the electrically conductive member 53.
  • a whole of the IC chip 61 including the electric contact surface 611 is positioned at the first outer surface 11 which is opposite side of the second outer surface 12 in the first direction, the detection gear 52 and the electrically conductive member 53 are positioned at the second outer surface 12.
  • At least the electric contact surface 6111 may be positioned at the first outer surface 11 and the IC chip 61 is positioned at a different position from the first outer surface (e.g., another surface of the casing 10).
  • An electrical interference between the between the electrically conductive member 53 and the electric contact surface 611 can be reduced, if at least the electric contact surface 6111 may be positioned at the first outer surface 11 and the IC chip 61 is positioned at a different position from the first outer surface (e.g., another surface of the casing 10).
  • an electrical interference between the between the electrically conductive member 53 and the IC chip 61 can be reduced.
  • the high-frequency noise on the IC chip 61 can be reduced based on charging the high electrical voltage (electrical power) to the electrically conductive member 53.
  • Fig. 7 is a perspective view showing a developing cartridge 1A and a drum cartridge 70A of a modification.
  • the developing cartridge 1A shown in Fig. 7 includes a casing 10A, a developing roller 30A, a coupling 41A a detection gear 52A an IC chip 61A.
  • the developing cartridge 1A is attached to the drum cartridge 70A instead of the drawer unit.
  • the drum cartridge 70A includes one developing cartridge holding portion 71A holding the developing cartridge 1A.
  • the developing cartridge holding portion 71A includes a photosensitive drum 72A.
  • Fig. 8 is a view showing how to attach the drum cartridge 70A to an image forming apparatus 100A in a state where the developing cartridge 1A is attached to the drum cartridge 70A.
  • the drum cartridge 70A is attached to a drum cartridge holding portion 101A provided in the image forming apparatus 100A in a state where the developing cartridge 1A is attached to the drum cartridge 70A.
  • the similar structure to that of the developing cartridge 1 according to the above embodiment can be applied to the developing cartridge 1A to be attached to the drum cartridge 70A.
  • the coupling 41A and an electric contact surface 611A of the IC chip 61A are positioned at the one side of the casing 10A in the first direction, and the detection gear 52A is also positioned at the another side of the casing 10A in the first direction.
  • a size of the one outer surface in the second direction and a size of the another outer surface in the second direction become smaller because the coupling 41A and the electric contact surface 611A are positioned at the one outer surface and the detection gear 52A is positioned at the another outer surface which is different from the one outer surface. Accordingly, the developing cartridge 1A can downsize.
  • the image forming apparatus 100A can also downsize.
  • the gear shaft 531 (an example of the second shaft) extends in the first direction from the second outer surface 12.
  • the gear shaft 531 may not directly contact with the second outer surface 12.
  • the casing 10 may have a through-hole penetrating the second outer surface 12 and a cap being attached to the through-hole.
  • the gear shaft may extend from the cap in the first direction.
  • the cap may include the gear shaft protruding in the first direction toward the detection gear 52.
  • the detection gear 52 may be rotatable about the gear shaft in a state where the detection gear 53 is supported by the gear shaft.
  • the plural gears provided within each of the first gear portion and the second gear portion are engaged with one another through meshing engagement of the gear teeth.
  • the plural gears provided within each of the first gear portion and the second gear portion may be engaged with one another through a frictional force.
  • frictional members such as rubber members, may be provided to the outer circumferences of two gears that engage with each other.
  • the developing cartridge 1 in this embodiment the developing cartridge is attached to the drawer unit of the image forming apparatus.
  • the developing cartridge may be attached to another image forming apparatus which does not include the drawer unit.
  • Shapes of the details in the developing cartridge may differ from those shown in the drawings attached to this application.
  • the respective components employed in the above-described embodiment and modifications can be selectively combined together within an appropriate range so that no inconsistency will arise.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dry Development In Electrophotography (AREA)
  • Electrophotography Configuration And Component (AREA)
EP23195345.6A 2016-08-22 2016-08-22 Cartouche de développement Pending EP4266126A3 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP23195345.6A EP4266126A3 (fr) 2016-08-22 2016-08-22 Cartouche de développement

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EP20189862.4A EP3754430B1 (fr) 2016-08-22 2016-08-22 Cartouche de développement
EP16185126.6A EP3287853B1 (fr) 2016-08-22 2016-08-22 Cartouche de developpement
EP23195345.6A EP4266126A3 (fr) 2016-08-22 2016-08-22 Cartouche de développement

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EP16185126.6A Division EP3287853B1 (fr) 2016-08-22 2016-08-22 Cartouche de developpement
EP20189862.4A Division EP3754430B1 (fr) 2016-08-22 2016-08-22 Cartouche de développement
EP20189862.4A Division-Into EP3754430B1 (fr) 2016-08-22 2016-08-22 Cartouche de développement

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EP4266126A2 true EP4266126A2 (fr) 2023-10-25
EP4266126A3 EP4266126A3 (fr) 2023-12-20

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EP20189862.4A Active EP3754430B1 (fr) 2016-08-22 2016-08-22 Cartouche de développement
EP16185126.6A Active EP3287853B1 (fr) 2016-08-22 2016-08-22 Cartouche de developpement
EP23195345.6A Pending EP4266126A3 (fr) 2016-08-22 2016-08-22 Cartouche de développement

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JP7290074B2 (ja) * 2019-06-20 2023-06-13 ブラザー工業株式会社 現像カートリッジおよび画像形成装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008242085A (ja) 2007-03-27 2008-10-09 Brother Ind Ltd カートリッジおよび画像形成装置
JP2013054056A (ja) 2011-08-31 2013-03-21 Brother Ind Ltd カートリッジ

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3768706B2 (ja) * 1998-12-28 2006-04-19 キヤノン株式会社 電子写真画像形成装置
JP5182402B2 (ja) * 2011-08-31 2013-04-17 ブラザー工業株式会社 カートリッジ
JP5998793B2 (ja) * 2012-09-21 2016-09-28 ブラザー工業株式会社 画像形成システム

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008242085A (ja) 2007-03-27 2008-10-09 Brother Ind Ltd カートリッジおよび画像形成装置
JP2013054056A (ja) 2011-08-31 2013-03-21 Brother Ind Ltd カートリッジ

Also Published As

Publication number Publication date
EP3754430B1 (fr) 2023-10-18
ES2824682T3 (es) 2021-05-13
EP3287853B1 (fr) 2020-08-19
EP3754430A1 (fr) 2020-12-23
EP3287853A1 (fr) 2018-02-28
PL3754430T3 (pl) 2024-03-04
EP4266126A3 (fr) 2023-12-20
ES2963136T3 (es) 2024-03-25

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