WO2015037744A1 - 電子写真画像形成装置に用いられるカートリッジおよびドラムユニット - Google Patents

電子写真画像形成装置に用いられるカートリッジおよびドラムユニット Download PDF

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Publication number
WO2015037744A1
WO2015037744A1 PCT/JP2014/074754 JP2014074754W WO2015037744A1 WO 2015037744 A1 WO2015037744 A1 WO 2015037744A1 JP 2014074754 W JP2014074754 W JP 2014074754W WO 2015037744 A1 WO2015037744 A1 WO 2015037744A1
Authority
WO
WIPO (PCT)
Prior art keywords
coupling member
coupling
cartridge
rotation axis
hole
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.)
Ceased
Application number
PCT/JP2014/074754
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
成実 鴨志田
有光　健
小石　勇雄
悠介 新川
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to EP16200236.4A priority Critical patent/EP3168692B1/en
Priority to CN201910756314.7A priority patent/CN110426938B/zh
Priority to PH1/2022/553298A priority patent/PH12022553298A1/en
Priority to BR112016004701-0A priority patent/BR112016004701B1/pt
Priority to PH1/2022/553294A priority patent/PH12022553294A1/en
Priority to PH1/2022/553300A priority patent/PH12022553300A1/en
Priority to KR1020167008847A priority patent/KR101902662B1/ko
Priority to KR1020247037661A priority patent/KR102775520B1/ko
Priority to KR1020227006064A priority patent/KR102409323B1/ko
Priority to CN201910756321.7A priority patent/CN110426939B/zh
Priority to KR1020227034016A priority patent/KR102500155B1/ko
Priority to EP14844462.3A priority patent/EP3045979B1/en
Priority to RU2016113714A priority patent/RU2670580C2/ru
Priority to CN201910756390.8A priority patent/CN110456625B/zh
Priority to SG11201601874PA priority patent/SG11201601874PA/en
Priority to KR1020237004956A priority patent/KR102537839B1/ko
Priority to KR1020257006424A priority patent/KR20250030533A/ko
Priority to KR1020237035954A priority patent/KR102730867B1/ko
Priority to MX2018010916A priority patent/MX389774B/es
Priority to CN201910758109.4A priority patent/CN110308634B/zh
Priority to CN201910756388.0A priority patent/CN110442005B/zh
Priority to HK16107442.1A priority patent/HK1219543B/zh
Priority to KR1020187027176A priority patent/KR102045168B1/ko
Priority to PL14844462T priority patent/PL3045979T3/pl
Priority to MX2021013090A priority patent/MX2021013090A/es
Priority to AU2014319287A priority patent/AU2014319287A1/en
Priority to KR1020217003235A priority patent/KR102368313B1/ko
Priority to EP20193253.0A priority patent/EP3783441A1/en
Priority to CN201910756320.2A priority patent/CN110426934B/zh
Priority to KR1020227019754A priority patent/KR102450988B1/ko
Priority to PL16200236T priority patent/PL3168692T3/pl
Priority to KR1020237017626A priority patent/KR102593558B1/ko
Priority to CA2923967A priority patent/CA2923967A1/en
Priority to KR1020197033196A priority patent/KR102213064B1/ko
Priority to MX2016003086A priority patent/MX359041B/es
Priority to CN201910756394.6A priority patent/CN110426935B/zh
Priority to EP22176112.5A priority patent/EP4116776B1/en
Priority to ES14844462T priority patent/ES2812924T3/es
Priority to PH1/2022/553299A priority patent/PH12022553299A1/en
Priority to CN201480050056.6A priority patent/CN105531632B/zh
Publication of WO2015037744A1 publication Critical patent/WO2015037744A1/ja
Priority to ZA2016/00728A priority patent/ZA201600728B/en
Priority to US15/052,192 priority patent/US9791825B2/en
Priority to PH12016500458A priority patent/PH12016500458A1/en
Anticipated expiration legal-status Critical
Priority to AU2017216445A priority patent/AU2017216445A1/en
Priority to US15/697,610 priority patent/US10203652B2/en
Priority to US16/052,060 priority patent/US10671015B2/en
Priority to AU2019213328A priority patent/AU2019213328B2/en
Priority to US16/867,657 priority patent/US11199807B2/en
Priority to AU2021203064A priority patent/AU2021203064B2/en
Priority to US17/504,626 priority patent/US20220043389A1/en
Priority to US17/951,441 priority patent/US11579561B2/en
Priority to US18/098,766 priority patent/US12066786B2/en
Priority to AU2023201536A priority patent/AU2023201536B2/en
Priority to US18/209,546 priority patent/US12130579B2/en
Priority to US18/897,197 priority patent/US20250013188A1/en
Priority to AU2024264602A priority patent/AU2024264602A1/en
Ceased 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
    • G03G21/1671—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 photosensitive element
    • 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
    • G03G21/1839—Means for handling the process cartridge in the apparatus body
    • G03G21/1842—Means for handling the process cartridge in the apparatus body for guiding and mounting the process cartridge, positioning, alignment, locks
    • G03G21/1853—Means for handling the process cartridge in the apparatus body for guiding and mounting the process cartridge, positioning, alignment, locks the process cartridge being mounted perpendicular to the axis of the photosensitive member
    • 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
    • G03G15/75—Details relating to xerographic drum, band or plate, e.g. replacing, testing
    • G03G15/757—Drive mechanisms for photosensitive medium, e.g. gears
    • 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
    • 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
    • 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
    • G03G21/1839—Means for handling the process cartridge in the apparatus body
    • G03G21/1857—Means for handling the process cartridge in the apparatus body for transmitting mechanical drive power to the process cartridge, drive mechanisms, gears, couplings, braking mechanisms

Definitions

  • the present invention relates to a cartridge and a drum unit used in an image forming apparatus using an electrophotographic method such as a laser beam printer.
  • an electrophotographic image forming apparatus a configuration in which elements such as a photosensitive drum and a developing roller as a rotating body related to image formation are integrated as a cartridge and is detachable from an image forming apparatus main body (hereinafter referred to as an apparatus main body) is known. Yes.
  • an apparatus main body an image forming apparatus main body
  • a configuration is known in which the coupling force on the cartridge side is engaged with a driving force transmission unit such as a driving pin on the apparatus main body side to transmit the driving force.
  • Patent Document 1 discloses a configuration in which a coupling member provided at an end portion of the photosensitive drum can be tilted with respect to the rotation axis of the photosensitive drum. Accordingly, a configuration is known in which a coupling member provided on the cartridge is engaged with a drive pin provided on the apparatus main body, and a driving force is transmitted from the apparatus main body to the cartridge.
  • the present invention develops the above-described conventional technology.
  • a cartridge including a tiltable coupling member, a rotatable engaging portion for engaging with the coupling member, and a rotation axis of the engaging portion.
  • a frame and a developer in a mountable cartridge by moving the electrophotographic image forming apparatus body in a mounting direction substantially orthogonal to the rotation axis of the engaging portion.
  • a rotatable rotating body a rotatable transmitted member to which a rotational force for transmission to the rotating body is transmitted, a free end portion having a receiving portion for receiving the rotational force from the engaging portion, And a coupling member having a coupling portion having a transmission portion for transmitting the rotational force received by the bracket to the member to be transmitted, wherein the frame body has the free end portion to the outside of the frame body.
  • the cartridge has an entry portion into which the coupling guide enters instead of the coupling member as the engagement portion engages with the engagement portion.
  • the electrophotographic image forming apparatus is moved from a main body of the electrophotographic image forming apparatus in a predetermined direction substantially orthogonal to a rotation axis of a rotatable engaging portion and removed from the main body.
  • a free end portion having a receiving portion that receives a rotational force from the engaging portion, a coupling portion having a transmission portion for transmitting the rotational force received by the receiving portion, and a penetration provided in the coupling portion
  • a housing part capable of tiltingly holding the coupling member; an annular groove provided on the radially outer side of the cylinder of the housing part; and a holding part for holding both ends of the shaft passing through the through hole.
  • FIG. 1 is a cross-sectional view of an image forming apparatus main body and a cartridge according to the embodiment.
  • FIG. 2 is a cross-sectional view of the cartridge according to the embodiment.
  • FIG. 3 is an exploded perspective view of the cartridge according to the embodiment.
  • FIG. 4 is an explanatory diagram illustrating how the cartridge is attached to and detached from the apparatus main body according to the embodiment.
  • FIG. 5 is an explanatory view showing a state in which the cartridge is attached to and detached from the apparatus main body while being accompanied by the tilting operation of the coupling member according to the embodiment.
  • FIG. 6 is an explanatory diagram of the coupling member according to the embodiment.
  • FIG. 7 is an explanatory view of a relief portion of the coupling member according to the embodiment.
  • FIG. 8 is an explanatory diagram of the drum unit according to the embodiment.
  • FIG. 9 is an explanatory diagram illustrating a state in which the drum unit according to the embodiment is incorporated into the cleaning unit.
  • FIG. 10 is an exploded view of the drive side flange unit according to the embodiment.
  • FIG. 11 is a perspective view and a sectional view of the drive side flange unit according to the embodiment.
  • FIG. 12 is an explanatory diagram of the assembly method of the drive side flange unit according to the embodiment.
  • FIG. 13 is an explanatory diagram of the bearing member according to the embodiment.
  • FIG. 14 is an explanatory view of a bearing member according to the embodiment.
  • FIG. 15 is an explanatory diagram illustrating a state in which the coupling member according to the embodiment tilts with respect to the axis L1.
  • FIG. 16 is a perspective view of the drive unit of the apparatus main body according to the embodiment.
  • FIG. 17 is an exploded view of the drive unit of the apparatus main body according to the embodiment.
  • FIG. 18 is an explanatory diagram of a drive unit of the apparatus main body according to the embodiment.
  • FIG. 19 is an explanatory diagram in the middle of mounting of the cartridge according to the embodiment on the apparatus main body.
  • FIG. 20 is an explanatory diagram in the middle of mounting of the cartridge according to the embodiment on the apparatus main body.
  • FIG. 21 is an explanatory diagram when the mounting of the cartridge according to the embodiment on the apparatus main body is completed.
  • FIG. 22 is an explanatory diagram relating to the coupling guide according to the embodiment.
  • FIG. 23 is an explanatory diagram of how the cartridge according to the embodiment is detached from the apparatus main body.
  • FIG. 24 is an explanatory diagram of how the cartridge according to the embodiment is detached from the apparatus main body.
  • FIG. 25 is an explanatory diagram in the middle of mounting of the cartridge according to the embodiment on the apparatus main body.
  • FIG. 26 is an explanatory diagram of the coupling member and the main body side engaging portion according to the embodiment.
  • FIG. 27 is an explanatory view of the disengagement operation between the coupling member and the main body side engaging portion when the cartridge according to the embodiment is removed from the main body.
  • FIG. 28 is an explanatory diagram of the coupling guide according to the embodiment.
  • FIG. 29 is an explanatory diagram of the coupling member and the drive pin according to the embodiment.
  • FIG. 30 is an explanatory diagram of the cartridge and the coupling guide according to the embodiment.
  • FIG. 31 is an explanatory diagram of a bearing member according to the embodiment.
  • FIG. 32 is an explanatory diagram of a bearing member according to the embodiment.
  • FIG. 33 is an explanatory diagram of the bearing member according to the embodiment.
  • an image forming apparatus adopting an electrophotographic system is called an electrophotographic image forming apparatus.
  • the electrophotographic system refers to a system in which an electrostatic image formed on a photoreceptor is developed with toner.
  • the development method is not related to a development method such as a one-component development method, a two-component development method, or a dry development.
  • An electrophotographic photosensitive drum refers to a configuration in which a photosensitive member is provided on a drum-shaped cylinder surface layer used in an electrophotographic image forming apparatus.
  • a charging roller, a developing roller and the like related to image formation acting on the photosensitive drum are referred to as process means.
  • a cartridge including a photoconductor or process means (cleaning blade, developing roller, etc.) involved in image formation is called a process cartridge.
  • a process cartridge in which a photosensitive drum, a charging roller, a developing roller, and a cleaning blade are integrated will be described as an example.
  • a laser beam printer will be described as an example among electrophotographic methods used for a wide range of applications such as multifunction peripherals, fax machines, and printers.
  • symbol in an Example is for referring drawings, and does not limit a structure. Also, the dimensions and the like in the examples are for clearly explaining the relationship and do not limit the configuration.
  • the longitudinal direction of the process cartridge is a direction substantially orthogonal to the direction in which the process cartridge is attached to and detached from the main body of the electrophotographic image forming apparatus. Further, the longitudinal direction of the process cartridge is parallel to the rotation axis of the electrophotographic photosensitive drum (direction intersecting the sheet conveying direction).
  • the side where the photosensitive drum receives the rotational force from the image forming apparatus main body of the process cartridge is defined as a driving side (driven side), and the opposite side is defined as a non-driving side.
  • the upper side in the gravity direction when the image forming apparatus is installed is regarded as the upper side, and the opposite direction (reverse direction) is the lower side in the gravity direction (lower side).
  • the cartridge in this embodiment is a process cartridge in which a photosensitive drum as a photosensitive member (image carrier / rotating member) and a developing roller, a charging roller, and a cleaning blade as process means are integrated.
  • This cartridge is detachable (detachable) from the apparatus main body.
  • a rotating body / rotating member that rotates in response to a rotational force from the apparatus main body is provided in the cartridge (gear, photosensitive drum, flange, developing roller), and a member that carries and conveys a toner image is called a carrier. .
  • FIG. 1 is a cross-sectional view of a laser beam printer apparatus main body A (hereinafter referred to as apparatus main body A) and a process cartridge (hereinafter referred to as cartridge B) which are electrophotographic image forming apparatuses.
  • FIG. 2 is a cross-sectional view of the process cartridge B.
  • the apparatus main body A refers to a portion of the laser beam printer that is an electrophotographic image forming apparatus, excluding the removable process cartridge B.
  • the electrophotographic image forming apparatus shown in FIG. 1 is a laser beam printer using an electrophotographic technique in which a process cartridge B is detachable (attachable and detachable) from the apparatus main body A.
  • a process cartridge B is detachable (attachable and detachable) from the apparatus main body A.
  • the process cartridge B is disposed below the laser scanner unit 3 as the exposure means (exposure device) in the gravity direction.
  • a sheet tray 4 that accommodates a sheet sheet P as a recording medium (sheet material), which is a target (purpose) for the image forming apparatus to form an image, is disposed below the process cartridge B in the gravity direction.
  • the pickup roller 5a, the feeding roller pair 5b, the conveyance roller pair 5c, the transfer guide 6, the transfer roller 7, the conveyance guide 8, and the fixing are sequentially arranged along the conveyance direction X1 of the sheet P from the upstream side.
  • An apparatus 9, a discharge roller pair 10, and a discharge tray 11 are arranged.
  • the fixing device 9 as a fixing unit includes a heating roller 9a and a pressure roller 9b.
  • drum 62 which is a rotatable member (photosensitive member) carrying a developer, rotates in a direction indicated by an arrow R with a predetermined peripheral speed (process speed). Driven by rotation.
  • the charging roller 66 to which the bias voltage has been applied contacts the outer peripheral surface of the drum 62 and uniformly charges the outer peripheral surface of the drum 62.
  • the laser scanner unit 3 as exposure means outputs a laser beam L corresponding to image information input to the laser printer.
  • the laser beam L passes through the exposure window 74 on the upper surface of the process cartridge B and scans and exposes the outer peripheral surface of the drum 62.
  • an electrostatic image electrostatic latent image
  • the developer in the toner chamber 29 (hereinafter referred to as “toner T”) is agitated and conveyed by the rotation of a conveying screw 43 as a conveying member. Then, it is sent out to the toner supply chamber 28.
  • the toner T as the developer is carried on the surface of the developing roller 32 as the developing means (process means / rotating body) by the magnetic force of the magnet roller 34 (fixed magnet).
  • the developing roller 32 functions as a rotating member that carries and conveys the developer to the developing region in order to develop the electrostatic image formed on the photosensitive member.
  • the toner T transported to the development area is regulated in the layer thickness of the circumferential surface of the development blade 42 and the development roller 32.
  • the toner T is frictionally charged between the developing roller 32 and the developing blade 42.
  • An electrostatic image formed on the drum 62 is developed (visualized) with toner by a toner T carried on the surface of a developing roller as a rotating member that carries and transports the toner on the surface. That is, the drum 66 carries the developed toner (toner image) on its surface and rotates in the direction of arrow R.
  • the sheet P stored in the lower part of the apparatus main body A is moved to the sheet tray 4 by the pickup roller 5a, the feeding roller pair 5b, and the conveying roller pair 5c in accordance with the output timing of the laser beam L. It is fed from.
  • the sheet P is supplied to the transfer position (transfer nip) between the drum 62 and the transfer roller 7 via the transfer guide 6.
  • the toner images are sequentially transferred from the drum 62 as the image carrier to the sheet P as the recording medium.
  • the sheet P on which the toner image has been transferred is separated from the drum 62 as an image carrier and is conveyed along the conveyance guide 8 to the fixing device 9.
  • the sheet P passes through a fixing nip portion between the heating roller 9a and the pressure roller 9b constituting the fixing device 9.
  • the unfixed toner image on the sheet P is fixed to the sheet P by being pressurized and heated.
  • the sheet P on which the toner image is fixed is conveyed by the discharge roller pair 10 and discharged to the discharge tray 11.
  • the transfer residual toner that remains on the drum surface without being transferred to the sheet adheres to the surface of the drum 62 after the toner T is transferred to the sheet.
  • This transfer residual toner is removed by a cleaning blade 77 that contacts the peripheral surface of the drum 62.
  • the toner (transfer residual toner) removed from the drum 62 is stored in a waste toner chamber 71 b of the cleaning unit 60.
  • the charging roller 66, the developing roller 32, and the cleaning blade 77 all function as process means that act on the drum 62.
  • the image forming apparatus of the present embodiment employs a system that removes transfer residual toner with a cleaning blade.
  • a system cleanerless system
  • an auxiliary charging member (such as an auxiliary charging brush) for adjusting the charge of the transfer residual toner also functions as a process unit.
  • FIG. 3 is an exploded perspective view of the process cartridge B as a cartridge.
  • the frame of the process cartridge can be disassembled into a plurality of units.
  • the process cartridge B of the present embodiment is a unit in which two units of a cleaning unit 60 and a developing unit 20 are integrated.
  • the developing unit 20 that holds the drum 62 and the cleaning unit 60 will be described using a configuration in which two units are connected by two connecting pins 75 as connecting members. Also good.
  • a configuration may be adopted in which a plurality of units are not coupled by a coupling member such as a pin, and only a part of the units can be replaced.
  • the cleaning unit 60 includes a cleaning frame 71, a drum 62, a charging roller 66, a cleaning blade 77, and the like.
  • a drum (cylinder) 62 as a rotating body is provided with a coupling member 86 (coupling) as a driving force transmission component at an end portion on the driving side.
  • a driving force is transmitted from the apparatus main body to the drum 62 as a rotating body via a coupling member 86 (coupling). Therefore, it can be said that the coupling member 86 (coupling) as the drive transmission component is provided at the end (driven side end) on the side where the drum 62 is driven by the apparatus main body A.
  • a drum 62 (photosensitive drum) as a rotating body is rotatable around a rotation axis L1 (hereinafter referred to as axis L1) as a drum axis (rotation axis of the drum 62).
  • the coupling member 86 as a driving force transmission member is rotatable around a rotation axis L2 (hereinafter referred to as an axis L2) as a coupling axis (coupling rotation axis).
  • the coupling member 86 as a drive transmission member (drive force transmission component) is configured to be inclined (tilted) with respect to the drum 62.
  • the axis L2 can be inclined with respect to the axis L1 (details will be described later).
  • the developing unit 20 includes a toner storage container 21, a lid 22, a developing container 23, a first side member 26L (driving side), a second side member 26R (non-driving side), a developing blade 42, a developing roller 32, and a magnet roller. 34.
  • the toner container 21 has a transport screw 43 (stirring sheet) as a transport member for transporting the toner and a toner T as a developer.
  • the developing unit 20 uses a spring (in this embodiment, a helical spring 46 (coil spring) as an urging member for applying an urging force to restrict the posture of the unit between the developing unit 20 and the cleaning unit 60. Have).
  • the cleaning unit 60 and the developing unit 20 are rotatably connected to each other by a connecting pin 75 (a connecting pin / pin) as a connecting member to constitute a process cartridge B.
  • the rotation holes 23bL and 23bR are provided at the tips of the arm portions 23aL and 23aR formed in the developing container 23 at both ends in the longitudinal direction of the developing unit 20 (axial direction of the developing roller 32).
  • the rotation holes 23bL and 23bR are provided in parallel to the axis of the developing roller 32.
  • insertion holes 71a for inserting the connecting pins 75 are formed in both ends of the cleaning frame 71 which is a frame (casing) on the cleaning unit side. Then, the arm portions 23aL and 23aR are aligned with predetermined positions of the cleaning frame 71, and the connecting pins 75 are inserted into the rotation holes 23bL and 23bR and the fitting holes 71a. Thereby, the cleaning unit 60 and the developing unit 20 are coupled so as to be rotatable around the coupling pin 75 as a coupling member.
  • a helical spring 46 as an urging member attached to the base of the arm portions 23aL and 23aR hits the cleaning frame 71, and the developing unit 20 is moved to the cleaning unit 60 with the connecting pin 75 as a rotation center. Energized.
  • the developing roller 32 as the process means is reliably pressed in the direction of the drum 62 as the rotating body.
  • the developing roller 32 is kept at a predetermined distance from the drum 62 by a spacer (not shown) as a ring-shaped interval holding member attached to both ends of the developing roller 32.
  • FIG. 4 is an explanatory diagram showing how the process cartridge B is attached to and detached from the apparatus main body A.
  • 4A is a perspective view seen from the non-driving side
  • FIG. 4B is a perspective view seen from the driving side.
  • the drive side refers to the end in the longitudinal direction where the coupling member 86 of the process cartridge B is provided.
  • FIG. 4 is a view showing the apparatus main body in a state where the open / close door 13 is opened.
  • the apparatus main body A includes a drive head 14 as a main body side engaging portion and a guide member 12 as a guide mechanism.
  • the drive head 14 is a drive transmission mechanism on the main body side for driving force to a cartridge provided on the apparatus main body A side and attached to the apparatus, and engages with a coupling member 86 of the cartridge provided on the main body side.
  • the rotational force can be transmitted to the cartridge by rotating the drive head 14 after the engagement.
  • the drive head 14 can be regarded as a coupling on the main body side in that it is engaged with a coupling provided in the process cartridge B to transmit driving.
  • the drive head 14 as the main body side engaging portion is rotatably supported by the apparatus main body A.
  • the drive head 14 includes a drive shaft 14a as a shaft portion and a drive pin 14b as an applying portion for applying a rotational force (see FIG. 5 (b3)).
  • the drive pin 14b is described, but a protrusion (protrusion) that protrudes radially outward from the rotation axis of the drive shaft 14a is provided, and the driving force is transmitted from the surface of the protrusion to the cartridge side. It may be a configuration.
  • the drive pin 14a may be welded after being press-fitted into a hole provided in the drive shaft 14a.
  • a hatched portion (shaded portion) in FIGS. 5B1 to 5B4 represents a cut surface. Note that hatching (shading process) is similarly performed on cross-sectional views in FIG.
  • the guide member 12 as a guide mechanism is a main body side guide member for guiding the process cartridge B into the apparatus main body A.
  • the guide member 12 may be a plate-like member provided with a guide groove, or may be a member provided to guide (guide) the process cartridge B from the lower surface.
  • FIG. 5 is an explanatory diagram showing how the process cartridge B is attached to and detached from the apparatus main body A while the coupling member 86 is tilted (tilted, swinged, or swung).
  • FIG. 5A1 to FIG. 5A4 are enlarged views when the vicinity of the coupling member 86 is viewed from the driving side toward the non-driving side.
  • FIG.5 (b1) is sectional drawing (S1 sectional drawing) cut
  • FIG. 5 (b2) is the same as FIG. 5 (a2)
  • FIG. 5 (b3) is the same as FIG. 5 (a3)
  • FIG. 5 (b4) is the same as FIG. It is sectional drawing (S1 sectional drawing) cut
  • FIG. 5A1 to FIG. 5A4 show the process cartridge B attached to the apparatus main body A, and FIG. 5A4 completes the process cartridge B being attached to the apparatus main body A. It shows the state that was done.
  • the guide member 12 and the drive head 14 are drawn as parts of the apparatus main body A, and the other parts are parts of the process cartridge B.
  • the directions indicated by the arrows X2 and X3 in FIG. 5 are substantially orthogonal to the rotation axis L3 of the drive head 14.
  • the direction indicated by the arrow X2 is referred to as the X2 direction
  • the direction indicated by the arrow X3 is referred to as the X3 direction.
  • the X2 direction and the X3 direction are substantially orthogonal to the axis L1 of the drum 62 of the process cartridge.
  • the direction indicated by the arrow X2 is the direction in which the process cartridge B is mounted on the apparatus main body A (downstream in the cartridge mounting direction).
  • the direction indicated by the arrow X3 is a direction in which the process cartridge B is detached from the apparatus main body (upstream side in the cartridge mounting direction). Further, the direction indicated by the arrow X2 and the direction indicated by the arrow X3 can be combined and regarded as the attaching / detaching direction. In addition, it can be regarded that the meaning of the direction is included in the mounting and dismounting. In this case, the description may be made using expressions such as upstream in the mounting direction, downstream in the mounting direction, upstream in the separation direction, downstream in the separation direction.
  • the process cartridge B has a spring as an urging member (elastic member).
  • a torsion spring 91 also called a torsion spring, a torsion coil spring, or a kick spring
  • the torsion spring 91 urges the free end portion 86a of the coupling member to fall down in a direction approaching the drive head 14.
  • the torsion spring 91 biases the coupling member 86 so that the free end portion 86a faces the downstream side in the mounting direction perpendicular to the rotation axis of the drive head 14.
  • the process cartridge B is inserted into the apparatus main body A while keeping the posture (state) in which the free end 86a faces the drive head 14 in the coupling member 86 (details will be described later).
  • the rotation axis of the drum 62 is the axis L1
  • the rotation axis of the coupling member 86 is the axis L2
  • the rotation axis of the drive head 14 as the main body side engaging portion is the axis L3.
  • the axis L2 is inclined with respect to the axis L1 and the axis L3.
  • the rotation axis of the drive head 14 is substantially the same as the rotation axis of the drive shaft 14a.
  • the drive side flange 87 is provided at the end of the drum 62 and rotates integrally therewith, the rotation axis of the drive side flange 87 is substantially the same as the rotation axis of the drum 62.
  • FIG. 5 (b3) shows an example in which the drive pin 14b serving as the applying portion for applying the rotational force is in contact with the standby portion 86k1 of the coupling member. This contact restricts the position (tilt) of the coupling member 86, and the amount of tilt (tilt) of the axis L2 with respect to the axis L1 (axis L3) gradually decreases.
  • the axis line L2 is positioned substantially on the same straight line as the axis line L1 (axis line L3), as shown in FIGS.
  • the rotation axes of the coupling member 86, the drive head 14, and the drive side flange 87 are substantially straight.
  • the coupling member 86 provided in the process cartridge B and the drive head 14 as the main body side engaging portion engage with each other, so that the rotational force can be transmitted from the apparatus main body to the cartridge.
  • the state transitions from the state shown in FIGS. 5A4 and 5B4 to the state shown in FIGS. 5A1 and 5B1.
  • the coupling member 86 is inclined (tilted) with respect to the axis L1, so that the coupling member 86 is detached from the drive head 14 as the main body side engaging portion. That is, the process cartridge B moves in the X3 direction opposite to the X2 direction (substantially orthogonal to the rotation axis L3 of the drive head 14), and the coupling member 86 is detached from the drive head 14.
  • the process cartridge B only needs to move in the X2 direction or the X3 direction only in the vicinity of the mounting completion position.
  • the process cartridge B may move in any direction other than the vicinity of the mounting completion position. That is, it is only necessary that the trajectory of the cartridge immediately before the coupling member 86 engages or disengages with the drive head 14 moves in a predetermined direction substantially orthogonal to the rotation axis L3 of the drive head 14. ⁇ 4 (Description of coupling member)
  • the direction of rotation is expressed as clockwise (clockwise), counterclockwise (counter clockwise), clockwise, or counterclockwise with respect to the direction of hand movement of the clock.
  • the rotation direction R in FIG. 6 is counterclockwise when the non-driving side is viewed from the driving side of the cartridge.
  • a line drawn for explanation on a plane is called a virtual line
  • a surface drawn for explanation in a perspective view or the like is called a virtual plane.
  • the inside of the cartridge (cartridge inside direction) or the outside of the cartridge (cartridge outside direction) is expressed, the inside is regarded as the inside (inside direction) and the outside is regarded as the outside (outside direction) based on the frame. .
  • FIG. 6A is a side view of the coupling member 86.
  • FIG. 6B is an S2 cross-sectional view of the coupling member 86 taken along the line S2-S2 in FIG. In FIG. 6B, the drive head 14 as the main body side engaging portion is displayed without being cut.
  • FIG. 6C is a diagram illustrating a state where the coupling member 86 and the drive head 14 are engaged. Specifically, the coupling member 86 and the drive head 14 are viewed from the drive side end (end surface) of the cartridge and the outside of the drive head 14 in the direction of the arrow V1 in FIG.
  • FIG. 6D is a perspective view of the coupling member 86.
  • FIG. 6E is an explanatory view of the vicinity of the free end portion 86a (described later), and is a side view as viewed in the direction along the receiving portions 86e1 and 86e2 receiving the rotational force (the V2 direction in FIG. 6C).
  • the coupling member 86 has mainly three parts. In short, it consists of two ends and an intermediate part between them.
  • the first part is a free end portion 86a for engaging with the drive head 14 as the main body side engaging portion and receiving a rotational force from the drive head 14. Further, the free end portion 86a has an opening 86m that spreads toward the drive side.
  • the second part is a coupling part 86c (contained part) having a substantially spherical shape.
  • the coupling portion 86c is held (coupled / coupled) so as to be tiltable by a drive side flange 87 which is a transmitted member.
  • a driving flange 87 is attached to one end of the drum, and a non-driving flange 64 is attached to the other end.
  • the first part includes one end side of the coupling member and the second part includes the other end side of the coupling member.
  • the second portion can be regarded as including the rotation center when the coupling member rotates (tilts) when held by the drive side flange 87.
  • the third part is a connecting part 86g that connects the free end part 86a and the coupling part 86c.
  • the maximum rotation diameter ⁇ Z2 of the connecting portion 86g is smaller than the maximum rotation diameter ⁇ Z3 of the coupling portion 86c ( ⁇ Z2 ⁇ Z3) and smaller than the maximum rotation diameter ⁇ Z1 of the free end portion 86a ( ⁇ Z2 ⁇ Z1).
  • the diameter of at least a part of the joint part 86g is smaller than the largest part of the diameters of the coupling parts.
  • the diameter of at least a part of the connecting portion 86g is smaller than the largest portion of the diameter of the free end portion 86a.
  • This diameter is the maximum rotation diameter around the rotation axis of the coupling member, and refers to the largest diameter portion of the virtual circle drawn by each cross-section of the coupling member on a virtual plane perpendicular to the rotation axis of the coupling member. ing.
  • the maximum rotation diameter ⁇ Z3 of the coupling portion 86c is larger than the maximum rotation diameter Z1 of the free end portion 86a ( ⁇ Z3> ⁇ Z1). Accordingly, when the coupling member 86 is passed through a hole having a diameter of ⁇ Z1 or more and ⁇ Z3 or less from the free end portion 86a side, the coupling member 86 is caught in the hole and does not pass. Therefore, it becomes easy to prevent the coupling member 86 from falling off from the unit in which the coupling member 86 is assembled or after the assembly.
  • the maximum rotation diameter ⁇ Z1 of the free end portion 86a is larger than the maximum rotation diameter ⁇ Z2 of the joint portion 86g and smaller than the maximum rotation diameter ⁇ Z3 of the coupling portion 86c ( ⁇ Z3> ⁇ Z1> ⁇ Z2).
  • each maximum rotation diameter (phi) Z1, (phi) Z2, (phi) Z3 can be measured as shown to Fig.6 (a). Specifically, the diameter in the radial direction of each part of the coupling member is measured on the cross section including the rotation axis of the coupling member, and the largest diameter for each part is obtained. In addition, you may consider based on the solid figure formed when a coupling member rotates centering around a rotating shaft. Specifically, the point located in the position most distant from the rotation axis in the radial direction among the respective parts constituting the coupling member is specified. Then, a locus drawn when the identified point rotates around the rotation axis of the coupling member may be treated as a virtual circle, and the diameter of the virtual circle may be expressed as a maximum rotation diameter.
  • the opening 86m has a conical shape as an expanded portion (expanded portion) that expands toward the drive head 14 side in a state where the coupling member 86 is attached to the apparatus main body A.
  • the receiving surface 86f is an outer peripheral surface of the free end portion, and the receiving surface 86f protrudes outward to constitute a recess 86z inside the free end portion.
  • the recess 86z has an opening 86m (opening) on the side opposite to the side where the drum 62 is provided (cylinder side) in the direction of the axis L2.
  • two claw portions 86d1 and 86d2 are pointed with respect to the axis L2 on the tip side of the free end 86a and on the circumference centered on the axis L2. It is arranged in a symmetrical position. Further, standby portions 86k1 and 86k2 are provided between the claw portions 86d1 and 86d2.
  • standby portions 86k1 and 86k2 are provided between the claw portions 86d1 and 86d2.
  • a configuration including a pair of protrusions has been described, but a single protrusion may be used to transmit a driving force.
  • the space between the clockwise downstream surface and the upstream surface of the protrusion can be regarded as a standby portion.
  • the standby portion is a space (space) that is required when the drive pin 14b of the drive head 14 provided in the apparatus main body A waits without contacting the claw portion 86d.
  • This space is larger than the diameter of the drive pin 14b as an applying portion for applying a rotational force.
  • This space functions as play when the cartridge is mounted on the apparatus main body A.
  • the recess 86z is located inside the claw portions 86d1 and 86d2 in the radial direction of the coupling member 86.
  • the radial width of the claw portion 86d is substantially the same as the width of the standby portion.
  • the drive pin 14b for applying the rotational force to the standby portions 86k1 and 86k2 is provided. Located (preparation position / standby position). Further, in FIG. 6 (d), receiving portions 86e1 and 86e2 (see FIG. 6 (a)) that receive the rotational force intersecting the R direction are upstream of the claw portions 86d1 and 86d2 when rotated in the R direction. Each is provided. Note that the R direction in the figure is a direction in which a driving force is received from the driving head 14 of the apparatus main body during image formation to rotate.
  • the drive head 14 and the drive pin 14b that transmit drive to the process cartridge B constitute a drive transmission mechanism.
  • a single member performs a plurality of functions depending on the shape of the drive head.
  • the surface of the member which actually contacts with another member and transmits a drive is regarded as a part which performs the function.
  • relief portions 86n1 and 86n2 are provided at the bases of the receiving portions 86e1 and 86e2, which are recessed toward the coupling portion 86c with respect to the standby portions 86k1 and 86k2.
  • the escape portions 86n1 and 86n2 will be described in detail with reference to FIG.
  • FIG. 7B is an S3 cross section of FIG.
  • FIG. 7 shows a state in which the coupling member 86 is inclined along the drive pin 14b to which the rotational force is applied from the state in which the drive pin 14b and the receiving portions 86e1 and 86e2 are in contact with each other.
  • FIG. 7 when the coupling member 86 is inclined with the receiving portions 86e1, 86e2 and the drive pin 14b in contact with each other, in order to avoid interference between the standby portions 86k1, 86k2 and the drive pin 14b, Relief portions 86n1, 86n2 are provided.
  • the standby portions 86k1 and 86k2 when the entire standby portions 86k1 and 86k2 are further cut down to the coupling portion 86c side or the drive pin 14b is shortened.
  • the rigidity of the coupling member 86 when the standby portions 86k1 and 86k2 are cut to the coupling portion 86c side, the rigidity of the coupling member 86 may be lowered, so that the escape portions 86n1 and 86n2 are provided.
  • the receiving portions 86e1 and 86e2 are arranged at point-symmetrical positions around the axis L2. . Thereby, the rotational force transmission radius becomes constant, and the rotational torque transmitted to the coupling member 86 is stabilized. Further, in order to stabilize the position of the coupling member 86 that receives the rotational force as much as possible, it is desirable that the receiving portions 86e1 and 86e2 are arranged at positions that face each other by 180 °.
  • the number of receiving portions is Two are preferable.
  • it is the structure which equips the outer peripheral part of a receiving part with an annular
  • the heel tends to interfere with the engaging portion.
  • the receiving portions 86e1 and 86e2 are arranged so that the distal end side approaches the axis L2. It is desirable to incline at an angle ⁇ 3 with respect to the axis L2. This is because, as shown in FIG. 6B, the coupling member 86 is drawn toward the drive head 14 as the main body side engaging portion by the rotational torque transmitted to the coupling member 86. As a result, the conical receiving surface 86f and the spherical surface portion 14c of the drive head 14 come into contact with each other, and the position of the coupling member 86 is more stable.
  • the number of the claw portions 86d1 and 86d2 is set to two in the present embodiment, but can be changed as appropriate as long as the drive pin 14b can enter the standby portions 86k1 and 86k2 as described above.
  • the drive pin 14b since the drive pin 14b needs to enter the standby part, it is necessary to reduce the width of the claw part itself (circumferential width in FIG. 6C) by increasing the number of installed claw parts. There is. In such a case, it is preferable to use two protrusions (one pair) as in this embodiment.
  • the receiving portions 86e1 and 86e2 may be disposed on the radially inner side of the receiving surface 86f. Alternatively, the receiving portions 86e1 and 86e2 may be disposed at locations protruding radially outward from the receiving surface 86f in the direction of the axis L2.
  • the driving force is received from the driving head 14 on the side surfaces of the claw portions 86d1 and 86d2 protruding from the receiving surface 86f along the rotational axis in the direction away from the drum 62. For this reason, the projections of the claw portions 86d1 and 86d2 of the free end portion 86a that receives the driving force from the apparatus main body are exposed.
  • the claw portions 86d1 and 86d2 can be accommodated in the outermost portion of the bearing member 76 by urging the coupling member 86 with a spring. Thereby, the possibility that the claw portions 86d1 and 86d2 are damaged during transportation can be reduced.
  • the protruding amount Z15 of the claw portions 86d1, 86d2 from the standby portions 86k1, 86k2 is set to 4 mm. This is an amount suitable for ensuring that the standby portions 86k1 and 86k2 do not interfere with the drive pin 14b and that the claw portions 86d1 and 86d2 and the drive pin 14b are engaged with each other even when taking into account component tolerances. It can be changed depending on the component accuracy. However, if the standby portions 86k1 and 86k2 are unnecessarily escaped from the drive pin 14b, there is a risk of increasing deformation when driving is transmitted to the coupling member 86.
  • the protrusion amount Z15 is preferably in the range of 3 mm to 5 mm.
  • the length of the free end portion 86a in the direction of the axis L1 is about 6 mm. Therefore, the length of the base portion (the portion other than the claw portions 86d1 and 86d2) of the free end portion 86a is about 2 mm. As a result, the length of the claw portions 86d1 and 86d2 in the direction of the axis L1 is It is longer than the length of the portion other than 86d1 and 86d2.
  • the inner diameter ⁇ Z4 of the receiving portions 86e1 and 86e2 is set larger than the maximum rotation diameter ⁇ Z2 of the connecting portion 86g. In this embodiment, ⁇ Z4 is 2 mm larger than ⁇ Z2.
  • the coupling portion 86c is configured by a substantially spherical shape 86c1, a circular arc surface portion 86q1, 86q2, and a hole portion 86b having a center C as a tilting center on the axis L2.
  • the maximum rotation diameter ⁇ Z3 of the coupling portion 86c is configured to be larger than the maximum rotation diameter ⁇ Z1 of the free end portion 86a.
  • ⁇ Z3 is 1 mm larger than ⁇ Z1.
  • the arc surface portions 86q1 and 86q2 are arc surfaces obtained by extending an arc shape having the same diameter as that of the joint portion 86g along the axis L2.
  • the hole part 86b which is a through-hole has penetrated in the orthogonal direction orthogonal to the axis line L2.
  • the through hole 86b which is a through hole, includes first inclined restricted portions 86p1 and 86p2 orthogonal to the axis L2, and transmission portions 86b1 and 86b2 parallel to the axis L2.
  • the diameter of the pin 88 that passes through the hole 86b and supports the coupling member 86 so as to be tiltable is 2 mm. Therefore, if Z9 exceeds 1 mm, the coupling member 86 can be inclined. Further, when Z8 is 1 mm, the pin 88 can pass through the hole, and when Z8 exceeds 1 mm, the coupling member 86 has a degree of freedom such that it can rotate a certain amount around the axis L1.
  • the end portions in the direction orthogonal to the axis L2 reach the outer edges of the arcuate surface portions 86q1 and 86q2.
  • the end portion of the hole portion 86b in the direction orthogonal to the axis L2 reaches the outer edge of the spherical shape 86c1.
  • the connecting portion 86g has a cylindrical shape that connects the free end portion 86a and the coupling portion 86c, and is a columnar (or cylindrical) shaft portion substantially along the axis L2. is there.
  • the material of the coupling member 86 of this embodiment may be a resin such as polyacetal, polycarbonate, PPS, or liquid crystal polymer. Moreover, you may raise rigidity by mix
  • the total length including the third part from the first part is about 21 mm or less by devising the shape of the coupling member.
  • the length in the longitudinal direction from the tilt center C to the end of the free end that engages with the main body drive pin is 15 mm or less.
  • the shorter the distance from the center at which the coupling member tilts the smaller the distance retracted from the drive pin when the coupling is inclined at the same angle. In other words, in order to reduce the size of the cartridge or the like, it is necessary to devise such as increasing the tiltable angle (tilt angle) necessary for avoiding the drive pin if the coupling member is shortened.
  • the free end portion 86a, the coupling portion 86c, and the connecting portion 86g may be integrally formed, or those formed separately may be integrally coupled.
  • the coupling member is attached so as to be able to incline (inclinable) in any inclination direction when the three bodies of the flange to which the photosensitive drum and the coupling member are attached are taken out from the cartridge.
  • the configuration of the photosensitive drum unit U1 (hereinafter referred to as the drum unit U1) will be described with reference to FIGS.
  • FIG. 8 is an explanatory diagram of the configuration of the drum unit U1
  • FIG. 8 (a) is a perspective view seen from the driving side
  • FIG. 8 (b) is a perspective view seen from the non-driving side
  • FIG. 8 (c) is an exploded view. It is a perspective view.
  • FIG. 9 is an explanatory diagram showing how the drum unit U1 is incorporated into the cleaning unit 60.
  • the drum unit U1 includes a drum 62, a driving side flange unit U2 to which a rotational force is transmitted from the coupling member, a non-driving side flange 64, and a ground plate 65.
  • the drum 62 as a rotating body is a conductive member such as aluminum whose surface is coated with a photosensitive layer.
  • the drum 62 may be hollow inside or solid inside.
  • the driving side flange unit U2 as a member to which the rotational force is transmitted from the coupling member is disposed at the driving side end of the drum 62.
  • the fixed portion 87 b of the driving side flange 87 which is a transmission member is fitted into the opening 62 a 1 at the end of the drum 62. It is fixed to the drum 62 by adhesion or caulking. And if the drive side flange 87 rotates, the drum 62 will rotate integrally.
  • the drive side flange 87 is fixed to the drum 62 such that the rotation axis as the flange axis of the drive side flange 87 is substantially coaxial (colinear) with the axis L1 of the drum 62.
  • substantially coaxial means not only the same coaxial (on the same straight line) but also a slight deviation from the same axis (on the same straight line) due to variations in component dimensions. Including. The same applies to the following description.
  • the non-driving side flange 64 is substantially coaxial with the drum 62 and is disposed at the end of the drum 62 on the non-driving side.
  • the non-drive side flange 64 is made of resin.
  • the non-driving side flange 64 is fixed to the drum 62 by bonding, caulking, or the like in the opening 62a2 at the longitudinal end of the drum 62.
  • the non-drive side flange 64 is provided with a conductive (mainly metal) ground plate 65.
  • the ground plate 65 is in contact with the inner peripheral surface of the drum 62 and is electrically connected to the apparatus main body A.
  • the drum unit U1 is supported by the cleaning unit 60.
  • a bearing portion 64a (see FIG. 8B) of the non-driving side flange 64 is rotatably supported by the drum shaft 78.
  • the drum shaft 78 is press-fitted and fixed to a support portion 71 b provided on the non-driving side of the cleaning frame 71.
  • a bearing member 76 that is in contact with and supports the flange unit U2 is provided on the drive side of the drum unit U1.
  • a wall surface (plate-shaped portion) 76 h as a base portion (fixed portion) of the bearing member 76 is fixed to the cleaning frame 71 by screws 90.
  • the bearing member 76 is screwed to the cleaning frame 71.
  • the drive-side flange 87 is supported by the cleaning frame 71 via the bearing member 76 (details of the bearing member 76 will be described later).
  • the support member has protrusions inside and outside the cartridge.
  • the bearing member 76 which is a support member is a frame of the cartridge
  • the protrusion protruding from the bearing member 76 can be regarded as a frame protrusion (convex portion).
  • the bearing member 76 is attached to the cartridge frame body, so that the protrusion extends from the frame body.
  • the bearing member 76 and the frame of the cartridge may be provided with ribs, grooves, and thinnings in order to ensure the shrinkage and strength during resin molding at locations other than those specified in the present embodiment.
  • the bearing member 76 is fixed to the cleaning frame 71 with the screw 90.
  • a configuration in which the bearing member 76 is fixed by adhesion or a configuration in which the bearing member 76 is bonded by a molten resin may be used.
  • the cleaning frame 71 and the bearing member 76 may be integrated.
  • FIG. 10 is an exploded perspective view of the drive side flange unit U2
  • FIG. 10 (a) is a view from the drive side
  • FIG. 10 (b) is a view from the non-drive side
  • FIG. 11 is an explanatory diagram of the configuration of the drive side flange unit U2
  • FIG. 11 (a) is a perspective view of the drive side flange unit U2
  • FIG. 11 (b) is a cross-sectional view taken along the S4-S4 cut surface of FIG.
  • FIG. 11C is a cross-sectional view taken along the section S5-S5 in FIG.
  • FIG. 12 is an explanatory diagram of an assembly method of the drive side flange unit U2.
  • the drive side flange unit U2 includes a coupling member 86, a pin 88 as a shaft portion (shaft), a drive side flange 87, and a lid member 89 as a regulating member.
  • the coupling member 86 is engaged with the drive head 14 and receives a rotational force.
  • the pin 88 is substantially columnar (or cylindrical) and extends in a direction substantially orthogonal to the axis L1.
  • the pin 88 receives a rotational force from the coupling member 86 and transmits the rotational force to the drive side flange 87.
  • the pin 88 as the shaft portion abuts against the through hole of the coupling member to transmit the rotational force, so that the rotation restricting portion restricts the rotation of the coupling member in the rotational direction by abutting with a part of the through hole.
  • a tilt restricting portion that abuts with any part of the through shaft and restricts the tilt of the coupling member is provided.
  • the drive side flange 87 receives a rotational force from the pin 88 and transmits the rotational force to the drum 62.
  • the lid member 89 serving as a restricting member restricts the coupling member 86 and the pin 88 from dropping off from the driving side flange 87. Accordingly, the coupling member 86 can take various postures with respect to the drive side flange 87. In other words, the coupling member 86 is held so as to be tiltable about a rotation center such as a first posture and a second posture different from the first posture. If attention is paid to the free end portion of the coupling member, various positions (first position, second position different from the first position) can be taken.
  • the drive side flange unit U2 is composed of a plurality of members, and the drive side flange 87 as the first member and the lid member 89 as the second member are integrated to play a role as a flange.
  • the drive-side flange 87 performs both functions of receiving a drive from the pin 88 and transmitting the drive to the drum 62.
  • the lid member 89 holds the pin 88 together with the drive side flange 87 without substantially contacting the inside of the drum.
  • the coupling member 86 is provided with the free end portion 86a and the coupling portion 86c (accommodated portion).
  • the coupling portion 86c is provided with a hole portion 86b as a through hole.
  • the drive side flange 87 includes a fixed portion 87b, a first cylindrical portion 87j, an annular groove portion 87p, and a second cylindrical portion 87h.
  • the fixed portion 87b is a portion fixed to the drum 62 so as to contact the inner surface of the cylinder of the drum 62 and transmit the driving force.
  • the second cylindrical portion 87h is provided on the radially inner side of the first cylindrical portion 87j, and the annular groove portion 87p is provided between the first cylindrical portion 87j and the second cylindrical portion 87h.
  • the first cylindrical portion 87j has a gear portion (toothed gear) 87c on the radially outer side and a supported portion 87d on the radially inner side (annular groove portion 87p side).
  • a gear portion (gear) 87c As the tooth shape of the gear portion (gear) 87c, a helical gear is particularly desirable from the viewpoint of drive transmission, but a gear such as a spur gear may be used.
  • the second cylindrical portion 87h of the drive side flange 87 has a hollow shape and has a storage portion (hollow portion) 87i therein.
  • the storage part (hollow part) 87i is a part for storing the coupling part 86c of the coupling member 86 therein.
  • the drive side of the storage portion 87i is in contact with the coupling portion 86c, and serves as a drop-off prevention portion (overhang portion / drop-off restriction portion) that prevents (regulates) the coupling member 86 from dropping to the drive side.
  • a conical portion 87k is provided. Specifically, the conical portion 87k abuts on the outer periphery of the coupling portion 86c of the coupling member 86 and restricts the coupling member from falling off. More specifically, the conical portion 87k abuts on the substantially spherical portion of the coupling portion 86c and restricts the coupling member 86 from falling off.
  • the minimum inner diameter of the conical portion 87k is smaller than the inner diameter of the storage portion 87i. That is, the conical portion 87k projects (protrudes and overhangs) from the inner surface of the storage portion 87i toward the axial center (cavity side) of the coupling member, and comes into contact with the peripheral surface of the coupling portion 86c to restrict the dropout. be able to.
  • the conical portion 87k has a conical shape with the axis L1 as the central axis, but it may be a spherical surface or a plane intersecting the axis L1, for example.
  • an opening 87m for projecting the free end 86a of the coupling member 86 is provided so that its diameter ( ⁇ Z10) is larger than the maximum rotation diameter ⁇ Z1 of the free end 86a. It has been.
  • a second inclination restricting portion 87n is provided as another inclination restricting portion that comes into contact with the outer periphery of the coupling member 86 when the coupling member 86 is inclined (tilted).
  • the second inclination restricting portion 87n contacts the connecting portion 86g as the second inclination restricted portion when the coupling member 86 is inclined.
  • the gear portion 87 c is a portion that transmits a rotational force to the developing roller 32.
  • the supported portion 87d is a portion supported by the support portion 76a of the bearing member 76 (support member), and is provided on the thick back side of the gear 87c. These are arranged coaxially with the axis L1 of the drum 62.
  • the inclination angle is configured to be smaller than when the coupling member 86 abuts against the second inclination restricting portion (details will be described later).
  • the storage portion 87i provided inside the second cylindrical portion 87h has a pair of groove portions 87e (concave portions) disposed in parallel with the axis L1 at positions shifted from each other by 180 ° around the axis L1. .
  • the groove portion 87e opens to the fixed portion 87b side in the direction of the axis L1 of the drive side flange 87, and is connected to the cavity portion 87i in the radial direction.
  • the bottom of the groove 87e has a retaining portion 87f that is an orthogonal surface orthogonal to the axis L1.
  • the recess 87e has a pair of transmitted portions 87g that receive a rotational force from a pin 88 described later.
  • the groove part 87e (at least a part thereof) and the annular groove part 87p (at least a part thereof) overlap in the direction of the axis L1 (see FIG. 12B). Therefore, downsizing of the drive side flange 87 can be achieved.
  • the lid member 89 serving as the restricting member protrudes from the base 89a having a conical shape, the hole 89c provided in the base 89a, and the base 89a substantially parallel to the axis L1, and is shifted by about 180 ° around the axis of the base.
  • a pair of protrusions 89b are provided.
  • the projecting portion 89b has a longitudinal regulating portion 89b1 at the tip in the axis L1 direction.
  • the drive side flange 87 is made of resin molded by injection molding, and the material thereof is polyacetal, polycarbonate, or the like.
  • the drive-side flange 87 may be made of metal according to the load torque for rotating the drum 62.
  • the drive side flange 87 has a gear portion 87 c that transmits a rotational force to the developing roller 32.
  • the rotation of the developing roller 32 does not have to be via the drive side flange 87 in particular.
  • the gear part 87c can be eliminated.
  • the gear portion 87c is integrally formed with the drive side flange 87.
  • FIG. 13 is an explanatory view showing only the periphery of the bearing member 76 in the cleaning unit U1.
  • FIG. 13A is a side view seen from the driving side.
  • 13B is a cross-sectional view taken along the cutting line S61-S61 in FIG. 13A
  • FIGS. 13C and 13D are perspective views.
  • FIG.13 (e) is sectional drawing cut
  • 14 is a perspective view of the bearing member 76
  • FIG. 14 (a) is a view seen from the drive side
  • FIG. 14 (b) is a view seen from the non-drive side, with a drive side flange 87 added for explanation.
  • FIG. 14C is a cross-sectional view taken along the plane S71 in FIG.
  • the bearing member 76 mainly has a plate-like portion 76h, a first protruding portion 76j protruding from the plate-like portion 76h to one side (driving side), and a plate-like portion 76h protruding to the other side (non-driving side). It is comprised from the support part 76a as a 2nd protrusion part. Furthermore, the bearing member 76 has a cutout portion 76k as a retracting portion (a portion to be entered) that is recessed from the plate-like portion 76h in the protruding direction (non-driving side) of the support portion 76a.
  • the cutout portion 76k as the retreating portion is a concave portion when viewed from the reference surface of the bearing member 76, and is a groove portion having a width toward the downstream side in the cartridge mounting direction in this embodiment.
  • the recess is preferably a groove shape, but is not limited to this shape.
  • the recess from the reference surface is referred to as a retracting portion because the coupling member is inclined and retracted in order to avoid interference between the coupling and the drive pin on the main body side during mounting. It is. If the way of viewing is changed, the dent from the reference surface can be referred to as a portion to be entered.
  • the inclined coupling member enters the recessed portion.
  • a coupling guide on the main body side which will be described later, can also enter the recess. It should be noted that at least a part of the coupling member or the coupling guide only needs to enter the above-described recess, and it is not necessary for all of them to enter. Therefore, the dent provided in the frame of the cartridge frame is a retreat space for coupling depending on the way of viewing, and can be called an entry portion into which a coupling member or the like enters.
  • the coupling member that is inclined downward in the cartridge mounting direction is configured so that the inclination angle of the coupling member can be increased (retracted) more than in the other direction, and the width expands radially.
  • It may be a shape.
  • the shape of the retracting portion (the portion to be entered) is not limited to the groove, and may be a concave portion that goes to the downstream side in the cartridge mounting direction from the rotation shaft of the flange, and is not limited to the groove shape.
  • the first protrusion 76j has a cavity 76i that accommodates the coupling member 86 on the radially inner side, and the cavity 76i is notched via a notch 76j1 provided in a part of the first protrusion 76j.
  • the portion 76k is spatially connected.
  • the cutout portion 76k as the retracting portion is provided on the mounting direction (X2) side of the process cartridge B when viewed from the hollow portion 76i.
  • the coupling member 86 is configured to be tiltable (tilted) in the mounting direction (X2) side (see FIG. 13). As a result, the coupling member 86 can be retracted (can be largely tilted) into the cutable portion 76k as the retracting portion when the cartridge is mounted on the apparatus main body.
  • the bearing member 76 has a cylindrical support portion 76a that enters the annular groove portion 87p of the drive side flange 87, and rotatably supports the supported portion 87d.
  • the first projecting portion 76j has a guided portion when the process cartridge B is mounted on the apparatus main body A, a cylindrical portion 76d that functions as a first positioned portion, and a spring receiving portion 76e. Further, a mounting tip portion 76f that functions as a second positioned portion is provided on the tip side in the mounting direction (X2) direction of the notch portion 76k.
  • the cylindrical portion 76d and the mounting tip portion 76f are provided at different positions in the direction of the axis L1 across the plate-like portion 76h and the notch portion 76k, and have arc shapes that are concentric with each other and have different diameters.
  • the first cylindrical portion 87j, the annular groove portion 87p, the second cylindrical portion 87h, and the groove portion 87e overlap in the direction of the axis L1.
  • the support part 76a of the bearing member 76 that enters the annular groove part 87p, the pin 88, the spherical shape 86c1 of the coupling member 86, and the gear part 87c are arranged at positions overlapping in the direction of the axis L1.
  • the bearing member 76 is provided with the notch 76k that is recessed on the non-driving side from the plate-like portion 76h, and when the coupling member 86 is inclined (tilted), the coupling member 86 A part is accommodated in the notch 76k.
  • the first protrusion 76j has an outermost shape in the direction of the axis L1 when the coupling member 86 is inclined toward the notch 76k.
  • the claw portions 86d1, 86d2) are configured to be located outside the claw portions 86d1, 86d2). As a result, the risk of the claws 86d1 and 86d2 of the coupling member 86 unexpectedly colliding with an obstacle during transportation or the like is reduced.
  • the developing roller 32 pushes the drum 62 in the direction of the arrow X7. That is, the drum unit U1 is pressed toward the notch 76k.
  • the notch portion side support portion 76aR has a notch portion 76k. Therefore, the opposite side support part 76aL without the notch part 76k is configured to have relatively higher rigidity than the notch part side support part 76aR. Therefore, in this embodiment, the supported portion 87d is provided on the back side of the thickness of the gear portion 87c and the drive side flange 87 is received on the inner periphery. Accordingly, the opposite side support portion 76aL substantially supports the drum unit U1. As a result, the notched portion side support portion 76aR having inferior rigidity is less likely to be loaded, and the support portion 76a is not easily deformed.
  • the torsion spring 91 as the biasing means is separated from the axis L ⁇ b> 1 of the driving side flange 87 in the attaching / detaching direction of the coupling member 86 and is below the gravity direction (vertical direction). Is provided.
  • the torsion spring 91 includes a cylindrical coil portion 91c, a first arm 91a extending from the coil portion 91c, and a second arm 91b (first end portion, second end portion).
  • the coil portion 91c is attached to the bearing member 76 by being pivotally supported (locked) by the spring hook portion 76g.
  • the spring hook portion 76g has a cylindrical portion that is higher than the coil portion 91c in height (length), and prevents the torsion spring 91 from falling off the spring hook portion 76g.
  • the spring hook portion 76g has a substantially D-shaped cross section with a straight portion in a part of a circle, and the torsion spring 91 is attached to the cartridge by passing this projection through the coil portion 91c. In the state where the torsion spring 91 is attached, the diameter of the coil portion 91 is larger than the diameter of the spring hook portion 76g.
  • the spring hooks 76g and B protrude from the same surface of the end of the cartridge frame in the longitudinal direction toward the outside of the cartridge along the rotational axis direction of the drive side flange.
  • the torsion spring 91 urges the coupling member 86 by the urging force F1 so that the free end portion 86a faces the cutout portion 76k. Further, since the width Z11 of the notch 76k is wider than the diameter ⁇ Z1 of the tip 86a of the coupling member 86, the tip 86a has a degree of freedom to move up and down with respect to the mounting direction X2. .
  • the coupling member 86 is urged so that the tip portion 86a is lowered downward by the urging force F1 and gravity.
  • the axis L2 of the coupling member 86 is inclined toward the notch 76k with respect to the axis L1, and the tip 86a is in contact with the lower surface 76k1.
  • the free end portion 86a is configured to be positioned below the axis L1 by the biasing force F1 of the torsion spring 91.
  • the coupling member 86 is inclined so that the free end portion 86a is positioned below the axis L1, as will be described later in FIG.
  • the torsion spring 91 is configured so that the free end portion 86a of the coupling member 86 faces the direction approaching the drive head 14. However, depending on conditions such as the mounting direction X2, the direction of gravity, and the weight of the coupling member 86, the free end portion 86a of the coupling member 86 faces the X2 direction due to the weight of the coupling member.
  • the coupling member 86 may be directed in a desired direction using gravity without providing the torsion spring 91 as the biasing means (biasing member).
  • the coupling member 86 of this embodiment is biased by a torsion spring 91 and abuts against the lower side surface of the groove-shaped notch 76k in the gravity direction.
  • the coupling member is sandwiched between the torsion spring and the lower side surface of the groove, and the posture of the coupling member is stabilized.
  • the coupling member can be brought into contact with the side surface of the groove-shaped notch 76k in the gravity direction.
  • it is more stable to stabilize the coupling posture without resisting gravity than to stabilize the coupling posture with the biasing force of the spring against gravity.
  • the position of the pin 88 in the longitudinal direction (axis line L1) of the drum 62 is regulated by the retaining portion 87f and the longitudinal regulating portion 89b1, and the position of the drum 62 in the rotational direction (R direction) is regulated by the transmitted portion 87g.
  • the pin 88 passes through a hole 86 b as a through hole of the coupling member 86.
  • the play between the hole 86b and the pin 88 is set to allow the tilting of the coupling member 86. With this configuration, the coupling member 86 can tilt (tilt, swing, or turn) in any direction with respect to the drive-side flange 87.
  • the coupling member 86 is restricted from moving in the radial direction of the drive-side flange 87 when the coupling portion 86c comes into contact with the storage portion 87i. Further, the movement from the driving side to the non-driving side is restricted when the coupling portion 86 c comes into contact with the base portion 89 a of the lid member 89. Furthermore, when the spherical shape 86c1 and the conical portion 87k of the driving side flange 87 abut, the movement of the coupling member 86 from the non-driving side to the driving side is restricted.
  • the width Z12 of the hole 86b is set larger than the diameter ⁇ Z13 of the pin 88 as shown in FIG.
  • the coupling member 86 and the pin 88 are connected with play in the rotation direction (R direction) of the drum 62, so that the coupling member 86 can also rotate a certain amount around the axis L2. .
  • the coupling member 86 is in contact with the base portion 89a or the conical portion 87k and the position in the direction of the axis L1 is restricted. However, due to component tolerances, the coupling member 86 can be moved in a small amount in the direction of the axis L1. It is comprised so that it may become.
  • the pin 88 is inserted into the hole 86 b that is a through hole of the coupling member 86.
  • the pin 88 and the pair of groove portions 87e of the driving side flange 87 are inserted into the storage portion 87i (along the axis L1) together with the coupling member 86 so that the phases of the pair of groove portions 87e are matched. .
  • the diameter ⁇ Z1 of the free end 86a of the coupling member 86 is smaller than the diameter ⁇ Z10 of the opening 87m.
  • the coupling member 86, the pin 88, and the lid member 89 can all be assembled from the storage portion 87i side of the drive side flange 87, and assembly can be facilitated.
  • the diameter ⁇ Z3 of the coupling portion 86c is provided smaller than the diameter of the opening portion 87m, the spherical portion 86c1 and the conical portion 87k can be brought into contact with each other. As a result, the coupling member 86 can be prevented from falling off to the drive side, and the coupling member 86 can be held with high accuracy.
  • FIG. 15 is an explanatory diagram showing a state in which the coupling member 86 (including the axis L2) is inclined (tilted) with respect to the axis L1.
  • FIGS. 15A1 and 15A2 are perspective views of the process cartridge B in a state where the coupling member 86 is inclined (tilted).
  • FIG. 15B1 is a cross-sectional view taken along the line S7-S7 in FIG.
  • FIG.15 (b2) is sectional drawing cut
  • the coupling member 86 can be tilted around the axis of the pin 88 with respect to the axis L1 with the sphere center of the coupling portion 86c as the center. Specifically, the coupling member 86 can be tilted (tilted) until the second tilt regulating portion 87n of the drive side flange 87 and the second tilt regulated portion (a part of the connecting portion 86g) abut.
  • the inclination (tilting) angle with respect to the axis L1 at this time is defined as a second inclination angle ⁇ 2 (second inclination amount, second angle).
  • the hole 86b and the claw portion 86d1 or the claw portion 86d2 are positioned in front of the direction in which the coupling member 86 is inclined (arrow X7 direction).
  • the phase relationship between the claw portions 86d1 and 86d2 was set. Specifically, the hole 86d11 satisfies the condition that the tip 86d11 of the claw 86d1 satisfies the condition of 59 ° to 77 ° ( ⁇ 6 and ⁇ 7 in FIG. 11E) with respect to an imaginary line passing through the center of the hole 86b.
  • 86b and claw portions 86d1 and 86d2 are arranged.
  • ⁇ 6 and ⁇ 7 are not limited to the above range, and are preferably in the range of about 55 ° to about 125 °.
  • the pin 88 has a large angle with respect to the direction in which the coupling member 86 inclines ( About 55 ° or more and about 125 ° or less).
  • the coupling member 86 at this time can be tilted by the second tilt amount or an amount close thereto, and can be largely tilted compared to the first tilt amount (described later).
  • the tip 86d11 can be largely retracted in the direction of the axis L1.
  • the coupling member 86 has a first inclined covering around an axis perpendicular to the axis of the pin 88 with the sphere center of the coupling portion 86c as the center with respect to the axis L1. It can be tilted (tilted) until the restricting portions 86p1, 86p2 and the pin 88 come into contact. According to the phase relationship between the hole 86b (pin 88) and the claw portions 86d1 and 86d2, the coupling member 86 is inclined (tilted) around the axis of the pin 88.
  • the claw portions 86d1 and 86d2 are located at positions facing each other across the direction in which the coupling member 86 is inclined (the direction of the arrow X8).
  • a tilt (tilt) angle with respect to the axis L1 at this time is defined as a first tilt angle ⁇ 1 (first tilt amount, first angle).
  • the coupling member 86, the drive side flange 87, and the pin 88 are configured so that the first inclination angle ⁇ 1 ⁇ the second inclination angle ⁇ 2 (the reason will be described later with reference to FIG. 25). .
  • the coupling member can be applied in a direction different from the inclination (tilting) direction described above.
  • 86 can be tilted (tilted).
  • the tilt (tilt) in all directions is represented by the above-described synthesis of the tilt (tilt)
  • the tilt (tilt) angle in any direction is equal to or greater than the first tilt angle ⁇ 1 and the second tilt angle ⁇ 2. It becomes as follows. In other words, it can be said that the first tilt angle ⁇ 1 (first tilt angle) and the second tilt angle (second tilt angle) or more can be tilted.
  • the coupling member 86 can be inclined (tilted) in substantially all directions with respect to the axis L1. That is, the coupling member 86 can be inclined (tilted) in any direction with respect to the axis L1. Further, the coupling member 86 can swing in any direction with respect to the axis L1. Furthermore, the coupling member 86 can pivot in substantially all directions with respect to the axis L1.
  • the turning of the coupling member 86 means that the inclined (tilted) axis L2 rotates around the axis L1.
  • the arcuate surface portions 86q1 and 86q2 are surfaces that define the first inclination angle ⁇ 1
  • the connecting portion 86g is one of the dimensions that determine the second inclination angle ⁇ 2. Therefore, in the present embodiment, the connecting portion 86g and the arc surface portions 86q1 and 86q2 have the same diameter arc shape, but may be changed as necessary. ⁇ 8 (Description of the drive unit of the device body)
  • FIG. 16 is a perspective view of the drive unit of the apparatus main body A (in the vicinity of the drive head 14 in FIG. 4A), as viewed from the upstream side of the apparatus main body A in the mounting direction (X2 direction) of the process cartridge B. is there.
  • FIG. 17 is an exploded perspective view of the drive unit
  • FIG. 18A is a partially enlarged view of the drive unit
  • FIG. 18B is a cross-sectional view taken along the section S9-S9 shown in FIG.
  • the cartridge drive unit includes the drive head 14, the first side plate 350, the holder 300, the drive gear 355, and the like as the main body side engagement unit.
  • the drive shaft 14a of the drive head 14 as the main body side engaging portion is fixed to the drive gear 355 in a non-rotatable manner by means not shown. Therefore, when the drive gear 355 rotates, the drive head 14 as the main body side engaging portion also rotates. Further, both ends of the drive shaft 14a are rotatably supported by the support portion 300a of the holder 300 and the bearing 354.
  • the motor 352 as a drive source is attached to the second side plate 351, and a pinion gear 353 is provided on the rotation shaft.
  • the pinion gear 353 meshes with the drive gear 355. Therefore, when the motor 352 rotates, the drive gear 355 rotates and the drive head 14 as the main body side engaging portion also rotates.
  • the second side plate 351 and the holder 300 are fixed to the first side plate 350, respectively.
  • the guide member 12 as a guide mechanism includes a first guide member 12a and a second guide member 12b for guiding the mounting of the process cartridge B. Further, a mounting end portion 12c orthogonal to the X2 direction is provided at the end of the first guide member 12a in the cartridge mounting direction (X2 direction). This guide member 12 is also fixed to the first side plate 350.
  • the holder 300 includes a support portion 300 a and a coupling guide 300 b that rotatably support the drive shaft 14 a of the drive head 14 as the main body side engaging portion.
  • the coupling guide 300b is located on the downstream side (back side of the apparatus main body) of the process cartridge B with respect to the support portion 300a in the mounting direction (X2 direction), and includes a connecting portion 300b1 and a guide portion 300b2.
  • the connecting portion 300b1 has an arc shape with a diameter ⁇ Z5 centered on the axis L3, and the diameter ⁇ Z5 is set to be larger than the maximum rotation diameter ⁇ Z2 of the free end portion 86a of the coupling member 86.
  • the distal end of the guide portion 300b2 has an arc shape with a diameter ⁇ Z6 centered on the axis L3.
  • the diameter ⁇ Z6 is provided so as to have a predetermined gap S with respect to the connecting portion 86g of the coupling member 86.
  • the predetermined gap S is a gap that prevents the connecting portion 86g and the guide portion 300b2 from interfering with each other due to component tolerances or the like when the process cartridge B is driven to rotate (see FIG. 22 for details later).
  • FIG. 19 is views of the apparatus main body A as viewed from the outside on the driving side, and sequentially show how the process cartridge B is mounted on the apparatus main body A.
  • FIG. 21B is a perspective view of the state of FIG.
  • FIG. 22 is a detailed explanatory view of the vicinity of the coupling member 86 when the process cartridge B is completely attached to the apparatus main body A.
  • the apparatus main body A shows the drive head 14 as the main body side engaging portion, the coupling guide 300 b of the holder 300, and the guide member 12, and the others show the parts of the process cartridge B.
  • FIG. 22 (a1) shows a state in which the process cartridge B is in the mounting completion position and the coupling member 86 is inclined (tilted).
  • FIG. 22 (a2) shows a state in which the process cartridge B is in the mounting completion position and the axis L2 of the coupling member 86 is substantially coincident with the axis L3 of the drive head 14 as the main body side engaging portion.
  • FIG. 22 (a3) is an explanatory view illustrating the relationship with the coupling guide 300b when the coupling member 86 is inclined (tilted).
  • 22 (b1) to (b3) are cross-sectional views taken along the line S10-S10 in FIGS. 22 (a1) to (a3), respectively.
  • the guide member 12 as a guide mechanism of the apparatus main body A is provided with a retraction spring 356 as an urging member (elastic member).
  • the retraction spring 356 is rotatably supported on the rotation shaft 320c of the guide member 12, and the position thereof is regulated by the stoppers 12d and 12e. At this time, the action part 356a of the retraction spring 356 is urged in the direction of the arrow J in FIG.
  • the first arc member 76d of the process cartridge B is disposed on the first guide member 12a, and the rotation stop boss of the process cartridge B is disposed on the second guide member 12b. 71c is inserted along. That is, the process cartridge first arc portion 76d contacts the guide groove on the main body side, and at this time, the coupling member 86 is inclined in the mounting direction (X2 direction) by the torsion spring 91 as an urging member (elastic member). is doing.
  • the coupling member 86 is covered with the first arc portion 76 d of the bearing member 76.
  • the coupling member 86 can continue to be inserted to the vicinity of the mounting completion position in this state without interfering with any part of the apparatus main body A in the insertion path of the process cartridge B.
  • the process cartridge B is mounted at a predetermined position (mounting completion position) (see FIG. 21).
  • the first arc portion 76d of the process cartridge B contacts the first guide member 12a of the guide member 12, and the mounting tip portion 76f contacts the mounting end portion 12c.
  • the rotation stop boss 71c of the process cartridge B comes into contact with the positioning surface 12h of the guide member 12 as a guide mechanism. In this manner, the position of the process cartridge B with respect to the apparatus main body A is determined.
  • the action portion 356a of the retraction spring 356 presses the spring receiving portion 76e of the process cartridge B in the direction of the arrow J in the figure, the contact between the first arc portion 76d and the first guide member 12a, and the mounting tip The contact between the portion 76f and the mounting end portion 12c is reliably performed.
  • the position of the process cartridge B is accurately determined with respect to the apparatus main body A.
  • the coupling member 86 continues to be tilted (tilted) in the mounting direction (X2 direction) by the torsion spring 91. Try to.
  • the torsion spring 91 continues to apply a biasing force (in a direction substantially coincident with the downstream side in the cartridge mounting direction) to the coupling member 86.
  • the connecting portion 86g contacts the guide portion 300b2 of the coupling guide 300b, and the inclination (tilt) of the coupling member 86 is restricted.
  • the pair of claw portions 86d1 and 86d2 and the drive pin 14b of the drive head 14 are in contact with each other at the same time. More specifically, the pair of claw portions are arranged so as to be substantially point-symmetric about the rotation center of the coupling member.
  • the axis L3 substantially coincides with the axis L2 of the coupling member 86.
  • the above-mentioned clearance gap S arises between the connection part 86g and the guide part 300b2, and the coupling member 86 can rotate stably.
  • the coupling guide 300b1 does not interfere with the coupling member 86 even when the coupling member 86 is inclined (tilted) during the process cartridge B attachment / detachment process. Therefore, the coupling guide 300b is located on the non-driving side with respect to the free end portion 86a (see FIGS. 22 (a3) and (b3)).
  • the notch portion 76k of the bearing member 76 has a shape that is recessed further to the non-driving side than the guide portion 300b2 so as not to interfere with the guide portion 300b2.
  • the width Z11 of the notch 76k of the bearing member 76 in the direction orthogonal to the S10-S10 cross-sectional line is wider than the width Z14 of the coupling guide 300b.
  • the coupling member 86 restricts the inclination (tilting) of the torsion spring 91 by the coupling guide 300b.
  • the inclination (tilting) of the coupling member 86 is not limited to that by the torsion spring 91.
  • the coupling guide 300b may be provided on the lower side in the gravity direction.
  • the coupling guide 300b may be provided at a position that restricts the inclination (tilting) of the coupling member 86 when the process cartridge B is mounted.
  • the process cartridge B is detached from the apparatus main body A while releasing the engagement between the coupling member 86 and the drive head 14 as the main body side engaging portion from the mounting completion position of the process cartridge B.
  • FIG. 24A1 is an explanatory view showing a state in which the coupling member 86 and the apparatus main body A are disengaged when the process cartridge B is detached from the apparatus main body A.
  • FIGS. 24 (a1) to (a4) are side views seen from the driving side outside, and FIGS. 24 (b1) to (b4) are cross sections cut along the S12-S12 cutting line of FIGS. 24 (a1) to (a4), respectively.
  • FIG. 24 shows the drive head 14 as the main body side engaging portion for the apparatus main body A, the coupling guide 300b of the holder 300, the guide member 320, and the other parts of the process cartridge B as in FIG. ing.
  • the process cartridge B is moved in the separation direction (X3 direction) from the state shown in FIGS. 24A1 and 24B1 (the state in which the coupling member 86 and the drive head 14 are engaged). Then, as shown in FIGS. 24 (a2) and 24 (b2), the coupling member 86 (the axis L2 thereof) is inclined (tilted) with respect to the axis L1 and the axis L3, and the process cartridge B is detached (X3 direction).
  • the amount of inclination (tilting) of the coupling member 86 at this time is determined by the free end portion 86a coming into contact with each portion of the drive head 14 (the drive shaft 14a, the drive pin 14b, the spherical portion 14c, and the tip portion 14d). .
  • the coupling member 86 and the drive head 14 as the main body side engaging portion are brought into contact with each other. Canceled.
  • the coupling member 86 is further tilted (tilted) by being biased by a torsion spring 91 as a biasing means (biasing member).
  • the inclination angle of the coupling member 86 urged by the torsion spring as the urging member is larger than the inclination angle when it is inclined in a direction other than the urged direction.
  • the inclination (tilting) of the coupling member 86 is restricted by the second inclination restricting portion 87n and the connecting portion 86g coming into contact with each other.
  • the maximum rotation diameter ⁇ Z2 of the connecting portion 86g is such that the coupling member 86 can be tilted (tilted) until the claw portion 86d1 on the upstream side in the separation direction is positioned on the non-driving side with respect to the tip portion 14d of the driving head 14.
  • the second inclination angle ⁇ 2 As a result, as shown in FIGS. 24A4 and 24B4, the coupling between the coupling member 86 and the drive head 14 as the main body side engaging portion is released, and the process cartridge B is detached from the apparatus main body A. can do.
  • the coupling member 86 is tilted (tilted), rotated as described above, or a combination thereof, so that the drive head 14 serving as the main body side engaging portion is Avoid each part.
  • FIGS. 23 (a1) and (b1) when the axial direction of the drive pin 14b is substantially perpendicular to the separation direction (X3 direction), the free end portion 86b faces the opposite side (X2 direction).
  • the claw portion 86d1 avoids the drive pin 14b in the non-drive side direction.
  • the free end portion 86a is the axis of the drive pin 14b. Tilt (tilt) so as to move along a direction parallel to the direction (X6 direction). As a result, the claw portion 86d1 can place the drive pin 14b in the direction of the arrow X6.
  • the free end portion 86a since the free end portion 86a needs to move below the axis L3 and the axis L1, as described above, the position of the lower surface 76k1 of the bearing member 76 is set, and the torsion spring 91 The direction of the urging force is set so that the free end portion 86a can easily face the lower side.
  • the lower side represented here is not necessarily limited to the direction of gravity. That is, the free end portion 86a only needs to be movable in a direction necessary for the claw portion 86d1 on the downstream side (upstream side in the removal direction) to move away from the drive pin 14b with respect to the mounting direction. .
  • the claw portion located on the downstream side in the mounting direction is located on the upper side, so that the direction in which the free end portion 86a should move is also the upper side.
  • the claw portions 86d1 and 86d2 are positioned above and below the mounting direction X2 of the coupling member 86, the free end is located on the claw portion side where the direction of the rotational force received from the drive pin 14b is the same as the mounting direction.
  • the portion 86a is preferably movable. In the case of the two examples as shown in FIG.
  • the inclination (tilting) angle required for releasing the engagement between the coupling member 86 and the drive head 14 as the main body side engaging portion is the second angle shown in FIG. It may be smaller than the inclination angle ⁇ 2.
  • FIG. 23B1 is a cross-sectional view taken along the line S11 in FIG.
  • FIG.23 (b2) is S11 sectional drawing of FIG.23 (a2).
  • the diameter of the free end 86a is ⁇ Z1
  • the diameter of the connecting portion 86g is ⁇ Z2
  • the spherical diameter of the substantially spherical coupling portion 86c is ⁇ Z3
  • the rotation diameter of the claw portions 86d1 and d2 is ⁇ Z4.
  • the spherical diameter at the tip of the drive head 14 as the engagement portion on the main body side is S ⁇ Z7
  • the length of the drive pin 14b is Z5. Further, as shown in FIGS.
  • the coupling member 86 can be inclined (tilted) around the axis of the pin 88 (second inclination angle) by ⁇ 2, and the axis orthogonal to the axis of the pin 88.
  • a possible amount of tilting (tilting) is defined as ⁇ 1.
  • the gap between the connecting portion 86g and the guide portion 300b2 when the axis line L2 and the axis line L3 substantially coincide with each other is S.
  • ⁇ Z1 10 mm
  • ⁇ Z2 5 mm
  • ⁇ Z3 11 mm
  • ⁇ Z4 7 mm
  • Z5 8.6 mm
  • S ⁇ Z7 6 mm
  • S 0.15 mm. .
  • both ⁇ 1 and ⁇ 2 can be tilted by about 20 ° or more, and may be between about 20 ° and about 60 °. More preferably, both are 25 ° or more and 45 ° or less. Further, while satisfying ⁇ 1 ⁇ 2, ⁇ 1 is preferably about 20 ° to about 35 ° and ⁇ 2 is preferably about 30 ° to about 60 °. The difference between ⁇ 1 and ⁇ 2 may be in the range of about 3 ° to about 20 °, and is preferably in the range of about 5 ° to about 15 °. As shown in FIG.
  • the mounting tip portion (described later) is positioned on the non-driving side with respect to the leading end portion 14d of the driving head 14, and is positioned on the driving side with respect to the guide portion 300b2.
  • the mounting tip portion is the tip portion 86d11 of the claw portion 86d1 when the inclination of the coupling member 86 is the second inclination angle ⁇ 2, and the standby portion 86k1 when the inclination is the first inclination angle ⁇ 1.
  • the standby portion 86k1 is closer to the rotation center C than the tip portion 86d11, the first tilt angle ⁇ 1 ⁇ the second tilt angle ⁇ 2 so that the axis of the mounting tip portion when the coupling member 86 is tilted is set.
  • the position in the L1 direction can be set to the same position. As a result, it is not necessary to unnecessarily widen the gap between the drive head 14 and the guide portion 300b2, and the apparatus main body A and the cartridge B can be reduced in size.
  • the assembly can be easily performed as in the present embodiment. Further, by including ⁇ Z1 ⁇ Z10 ⁇ Z3 including the minimum diameter ⁇ Z10 of the conical portion 87k as a drop-off preventing portion (overhang portion / drop-off restricting portion), the position of the coupling member 86 in the drive side flange unit U2 Can be determined with high accuracy.
  • FIG. 26 is an explanatory diagram of the coupling member 286 and the driving head 214 as the main body side engaging portion.
  • 26 (a) is a side view
  • FIG. 26 (b) is a perspective view
  • FIG. 26 (c) is a cross-sectional view taken along line S21-S21 in FIG. 26 (a).
  • FIG. 26D is a cross-sectional view taken along the cutting line S22-S22 in FIG. 26A, and the cutting line S22-S22 passes through the center of the drive pin 214b as the applying part and is orthogonal to the receiving part 286e1. It is a line to do.
  • the shapes of the claw portions 286d1 and 286d2 of the coupling member 286 are different from those in the first embodiment.
  • the claw portions 286d1, 286d2 are provided such that inner wall surfaces 286s1, 286s2 facing the axis L2 are provided in a planar shape, and the radial width Z21 of the receiving portions 286e1, 286e2 is provided wider than that in the first embodiment. . That is, compared with the first embodiment, the claw portions 286d1 and 286d2 are provided so that the radial width is thicker.
  • ⁇ Z22 is provided to be larger than the diameter ⁇ Z7 of the drive shaft 214a of the drive head 214.
  • the overlapping amount of the drive pins 214b1 and 214b2 and the receiving portions 286e1 and 286e2 in the axial direction of the drive pins 214b1 and 214b2 (a direction orthogonal to the axis L2 (L3)).
  • the engagement amount is Z23.
  • One drive head 214 is provided with a concave portion 214e recessed from the receiving surface portion 214c and the drive shaft 214a at the base of the drive pin 214b and downstream of the drive pin 214b in the rotation direction (R direction).
  • FIG. 27 is a view for explaining the operation of the coupling member 286 when the cartridge B is detached from the apparatus main body A.
  • FIGS. 27A1 to 27A4 are views of the state in which the process cartridge B is sequentially detached from the apparatus main body A as viewed from the drive side outside of the apparatus main body A.
  • FIG. 27 (b1) to 27 (b4) are cross-sectional views (cross-sectional views taken along the cutting line S23-S23) of FIGS. 27 (a1) to 27 (a4) viewed from the bottom in the detachment direction.
  • the coupling member 286, the drive head 214, and the pin 88 are not cut.
  • the cartridge B is moved in the removal direction (X3 direction). Then, the cartridge B moves in the removal direction (X3 direction) while the axis L2 of the coupling member 286 is inclined (tilted) with respect to the axis L1 of the drive side flange 87 and the axis L3 of the drive head 214. At this time, the claw portion 286d1 (receiving portion 286e1) on the downstream side of the driving pin 214b1 in the separation direction (X3 direction) remains in contact with the driving pin 214b1.
  • the cartridge B is further moved in the removal direction (X3 direction).
  • the axis L2 is further inclined (tilted), and the first inclined restricted portion 286p1, 286p2 (not shown) and the pin 88 as the first inclination restricting portion, or the second inclination restricting portion, as in the first embodiment.
  • the claw portion 286d1 (the receiving portion 286e1) is moved further to the non-drive side than the drive pin 214b. Instead, it may remain in contact. This is because the amount of movement of the claw portions 286d1, 286d2 toward the non-driving side due to the inclination (tilting) of the axis L2 is small.
  • the coupling member 286 is inclined in the direction of the arrow X5 so that the claw portions 286d1 and 286d2 move along the drive pins 214b and 214b2 ( Tilt).
  • the coupling member 286 is further tilted (tilted) in the direction of the arrow X5 so that the claw portion 286d2 enters the notch portion 214e.
  • the coupling member 286 is inclined (tilted)
  • the contact between the claw portion 286d1 and the drive pin 214b1 is released in the direction of the arrow X5.
  • the process cartridge B can be detached from the apparatus main body A.
  • the radial width Z21 of the receiving portions 286e1 and 286e2 is provided so as to be larger than that in the first embodiment.
  • the width of the base was provided to be about 1.5 mm.
  • an angle formed by two straight lines connecting both ends of the protrusion from the rotation is about 10 ° or more and about 30 °. The following is preferable.
  • the base width should just be 1.0 mm or more.
  • the notch 214e releases the engagement between the coupling member 286 and the drive head 214 even when the engagement amount Z23 is larger than the gap between the inner diameter ⁇ Z24 of the claw and the diameter ⁇ Z27 of the body of the drive head 214. I want.
  • the coupling member 86 is provided so as to have a large inclination (tilt) in the direction of the arrow X5.
  • the large inclination means that the claw portions 286d1 and 286d2 can move in the direction of the drive pins 214b1 and 214b2 by the engagement amount Z23 or more.
  • the configuration of the coupling guide 400b in the present embodiment will be described with reference to FIG.
  • the configuration of the coupling guide 400b is the same as that of the first embodiment, but the gap S2 set between the coupling member 286 and the connecting portion 286g is different from that of the first embodiment.
  • FIG. 28 is an explanatory diagram of the coupling guide 400b.
  • FIGS. 28A1 and 28B1 illustrate a state in which the cartridge B is mounted on the apparatus main body A and the axis L2 of the coupling member 286 remains inclined (tilted). Represents.
  • FIGS. 28A2 and 28B2 show a state in which the axis L2 matches the axis L1 and the axis L3.
  • FIG. 28 (b1) is a cross-sectional view taken along the line S24 in FIG. 28 (a1).
  • FIG. 28 (b2) is a cross-sectional view taken along the line S24 in FIG. 28 (a2).
  • the coupling guide 400b is configured so that the engagement between the drive pin 214b and the claw portion 286d1 is not disengaged even when the coupling member 286 is inclined (tilted).
  • the inclination (tilting) of the ring member 286 can be restricted.
  • the engagement amount Z23 is larger than that in the first embodiment.
  • the gap S2 in FIG. 28 (b2) is larger than the gap S in the first embodiment (see FIG. 22 (b2)).
  • the engagement amount Z23 between the drive pins 214b1 and 214b2 and the claw portions 286d1 and 286d2 is increased, and the notch 214e is provided in the drive head 214.
  • the coupling member 286 and the drive head 214 can be disengaged.
  • FIG. 29 is an explanatory diagram of the coupling member 386 and the drive head 314 as the main body side engaging portion.
  • FIG. 30 is an explanatory diagram of the R-shaped portion 386g1 and shows a state where the cartridge B is mounted on the apparatus main body A.
  • FIG. 31 is an explanatory view of the bearing member 387 and the coupling member 386, and shows a perspective view and a cross-sectional view.
  • the coupling member 386 is provided with a lightening 386c2 to a lightening 386c9 at the coupling portion 386c.
  • the diameter of the connecting portion 386g is narrowed, and the thickness formed by the spring receiving portion 386h and the receiving surface 386f is thin. As a result of these, materials can be reduced.
  • the coupling portion 386c is configured such that a portion where the spherical shape 386c1 is interrupted by the lightening 386c2 to 386c9 and the hole portion 386b does not continuously exceed 90 °.
  • a spherical shape it may be expressed as a substantially spherical shape in consideration of a lack of meat or manufacturing variations.
  • the position of the coupling member 86 in the drive side flange unit U32 can be stabilized.
  • the position of the coupling member can be stabilized at the position of the S14-S14 cutting line supported by the storage portion 87i as shown in FIG. 29 (c), or at the position facing the conical portion 87k and the base portion 89a. it can.
  • the arc surface portion 386q1 and the arc surface portion 386q2 have different diameters.
  • an R shape 386g1 is provided between the connecting portion 386g and the spring receiving portion 386h.
  • the drive-side flange unit U32 is provided with a backlash that moves the coupling member 386 in a small amount in the direction of the axis L1.
  • the amount of engagement Z38 in the direction of the axis L1 between the driving pin 314b and the claw portions 386d1 and 386d2 decreases.
  • the amount of engagement Z38 is the distance in the axis L3 direction between the center point of the arc shape of the drive pin 314b and the tip of the claw portion 386d1.
  • the coupling member 386 when the coupling member 386 is tilted until the connecting portion 386g and the guide portion 330b2 of the coupling guide 330b come into contact with each other, the amount of engagement Z38 between the drive pin 314b and the claw portions 386d1, 386d2 is reduced, thereby transmitting the driving force. May have an impact.
  • the R-shaped portion 386g1 when the coupling member 386 approaches the non-driving side, the tip of the guide portion 330b2 of the coupling guide 330b and the R-shaped portion 386g1 are close to each other.
  • the inclination of the coupling member 386 can be made smaller than when the guide portion 300b2 and the connecting portion 86g contact each other as in the first embodiment. Therefore, by providing the R-shaped portion 386g1, it is possible to prevent the amount of engagement Z38 from being reduced due to the coupling member 386 moving toward the non-driving side and the amount of engagement Z38 from being decreased due to the inclination of the coupling member 386 from occurring simultaneously. be able to.
  • the R-shaped portion 386g1 is not limited to the arc shape, and the same effect can be obtained even when the R-shaped portion 386g1 has a conical surface shape, for example.
  • the claw portions 386d1, 386d2 are formed with a flat tip and increase the thickness in the circumferential direction, thereby reducing deformation of the claw portions 386d1, 386d2 during drive transmission. is doing.
  • a spring receiving groove 386h1 is provided in the spring receiving portion 386h in order to define a portion to be pressed from the torsion spring 91 (see also FIG. 30 (d)). If the portion of the spring 91 that comes into contact with the second arm 91b is defined and a lubricant is applied thereto, the sliding between the second arm 91b and the coupling member 386 always involves grease, and both of them are scraped and slid.
  • the coupling member 386 is made of metal, and the torsion spring 91 is also made of metal. Even in a state where the coupling member 386 rotates by receiving a driving force from the main body side engaging portion 314, the torsion spring 91 continues to apply a biasing force to the coupling member. For this reason, the metals keep rubbing against each other during image formation, and it is desirable to interpose a lubricant at least between the coupling member 386 and the torsion spring 91 in order to reduce the influence thereof.
  • the drive pin 314b does not have to be cylindrical in the main body side engaging portion 314.
  • the diameter s ⁇ Z36 of the spherical surface portion 314c is a spherical surface that contacts the thinned receiving surface 386f as compared with the first embodiment, the diameter s ⁇ Z6 of the spherical surface portion 14c and the diameter ⁇ Z37 of the drive shaft 314a in the first embodiment. Is also getting bigger.
  • a taper 314e1 is provided at a step portion between the notch 314e and the drive shaft 314a.
  • the bearing member 376 will be described in detail with reference to FIG. 31
  • the width Z32 of the notch 376k of the bearing member 376 is larger than the diameter ⁇ Z31 of the tip 386a, as in the first embodiment, and the tip 386a is in the mounting direction X2 and the axis L1. On the other hand, it faces down.
  • the plate-like portion 376h is configured to be located on the drive side as compared with the first embodiment.
  • the coupling member 386 when the coupling member 386 is inclined, the outermost diameter portion ( ⁇ Z31 portion) of the distal end portion 386a comes into contact with the lower surface 376k1 of the notch portion 376k.
  • the downward inclination of the coupling member 386 is defined regardless of the inclination angle of the coupling member 386, and the main body side engaging portion 314b can be more stably engaged.
  • the conical spring receiving portion 87h is in contact with the lower surface 76k1, the amount of the coupling member 86 depending on the inclination angle of the coupling member 86 is different.
  • the spring hook portion 376g includes a retaining portion 376g1, an insertion port portion 376g2, and a support portion 376g3.
  • the insertion port portion 376g2 and the support portion 376g3 are smoothly connected by a tapered portion 376g4 so that the spring 91 can be inserted smoothly when inserted in the direction of the arrow X10.
  • the outermost diameter Z33 of the retaining portion 376g1 and the insertion port portion 376g2 and the outermost diameter Z34 of the support portion 376g3 are smaller than the inner diameter ⁇ Z35 of the coil portion 91c of the spring 91.
  • the coil portion 91c can be easily inserted into the spring hooking portion 376g, and the support portion 376g3 prevents the coil portion 91c from moving away from the retaining portion 376g1. can do. Thereby, it is possible to reduce the possibility that the spring 91 comes out of the spring hooking portion 376g. Further, the spring hook portion 376g is configured not to protrude outward (drive side) from the first protrusion portion 376j, thereby reducing the possibility of the spring hook portion 376g being damaged at the time of physical distribution.
  • the retaining portion 376g1 is preferably provided on the side opposite to the coupling member 386 as viewed from the spring hook portion 376g (lower left side in FIG. 31A).
  • the reaction force F91 received by the torsion spring 91 (the resultant force F91a received by the first arm 91a and the force F91b received by the second arm 91b) is the upper right side on the coupling member 386 side (FIG. 31A). )
  • the coil part 91c approaches the coupling member 386 side. Therefore, setting the position of the retaining portion 376g to the position disclosed in the present embodiment makes it difficult for the torsion spring 91 to be detached while ensuring the mountability of the torsion spring 91.
  • the coupling member 386 is inclined until it approaches the coil portion 91c side as shown in FIG. 31 (c), the first arm 91a and the second arm 91b become substantially parallel.
  • the bearing member 376 is provided with a contact prevention rib 376j5 and a contact prevention surface 376j2 so as to prevent the coupling member 386 from coming into contact with the coil portion 91c.
  • the leading end portion 386a is brought into contact with the contact prevention rib 376j5 and the contact prevention surface 376j2 so that the tip portion 386a becomes the coil portion 91c. Is prevented from coming into contact. Thereby, possibility that the coil part 91c will remove
  • a space 376j4 for moving the second arm 91b of the spring 91 is provided on the radially inner side of the first protruding portion 376j.
  • the second arm 91b has such a length that the arm portion 91b1 of the second arm 91b can always be brought into contact with the spring receiving portion 386h (see FIG. 29) of the coupling member 386. Thereby, it can prevent that the front-end
  • the torsion spring 91 is prevented from coming off by the shape of the spring hooking portion 376g.
  • the silicon spring or hot melt may be applied to prevent the torsion spring 91 from coming off. Further, it may be prevented from coming off by another resin member.
  • the components other than the drive side flange unit and the bearing member are the same as those in the first embodiment, and therefore the description thereof is omitted by giving the same reference numerals.
  • symbol even if it is a case where a part is changed with the structure of a present Example, the same code
  • the first projecting portion 476j of the bearing member 476 is divided into upper and lower parts. This reduces the surrounding structure when inserted into the spring hooking portion 476g, thereby improving the assemblability when the torsion spring 91 is inserted into the spring hooking portion 476g by a tool or an assembling device.
  • the support portion 76a is used as the second protruding portion so as to protrude from the plate-like portion 76h to the non-driving side.
  • the supporting portion 476a May be provided inside the cavity 476i.
  • the supported portion 487d provided on the driving side flange 487 is provided on the second cylindrical portion 487h as long as the inclination (tilting) of the coupling member 86 is not hindered.
  • the drive-side flange 487 does not have to be provided with the annular groove 487p.
  • the annular groove portion 487p is provided for the sake of resin molding, when the first cylindrical portion 487j and the second cylindrical portion 487h are connected by the rib shapes 487p1 to 487p4 and driving is transmitted to the driving side flange 487 Can also be suppressed.
  • the components other than the drive side flange unit and the bearing member are the same as those in the first embodiment, and therefore the description thereof is omitted by giving the same reference numerals.
  • symbol even if it is a case where a part is changed with the structure of a present Example, the same code
  • the notch 576k of the bearing member 576 is different from the first embodiment.
  • the notch portion 76k was recessed in the non-driving side from the plate-like portion 76h, and had a groove shape parallel to the mounting direction X2.
  • the notch 576k of the bearing member 576 is the same as that of the first embodiment in that it is recessed from the plate-like portion 576h to the non-driving side, but it is not necessary to have a groove shape. It is only necessary to provide a space where the coupling member 86 is inclined by being recessed from the plate-like portion 576h and to define the vertical position of the coupling member 86 (free end portion 86a) by the lower surface 576k1.
  • the supported portion 87d is provided on the inner periphery of the first cylindrical portion 87j of the drive side flange 87.
  • the outer peripheral surface of the second cylindrical portion 587h is the supported portion 587d.
  • a support portion 576a as a second protruding portion enters the groove portion 587p and pivotally supports the supported portion 587d. Since the second cylindrical portion 587h can protrude more to the driving side than the first cylindrical portion 587j, by providing the supported portion 587d on the second cylindrical portion 587, the supported portion on the first cylindrical portion 587j.
  • the axial support length in the direction of the axis L1 can be made longer than that provided. (Other examples)
  • the coupling member is described as an example of a configuration in which the coupling member is accommodated in the flange unit of the photosensitive drum.
  • any configuration may be used as long as the cartridge is driven via the coupling member.
  • the developing roller may be rotationally driven via a coupling member.
  • a developing cartridge that does not include a photosensitive drum and that transmits the rotational force from the engaging portion on the main body side to the developing roller can be suitably applied.
  • the coupling member 86 transmits the rotational force to the developing roller 32 as a rotating body instead of the photosensitive drum.
  • the present invention can be suitably applied even to a configuration in which the driving force is transmitted only to the photosensitive drum.
  • the drive-side flange 87 serving as a member to be transmitted is fixed to the longitudinal end portion of the drum 62 that is a rotating body, but may be an independent member without being fixed.
  • it may be a gear member that transmits a rotational force to the drum 62 and the developing roller 32 through gear coupling.
  • the cartridge B in the above embodiment was for forming a monochrome image. However, this is not the case.
  • a cartridge that includes a plurality of developing units and forms a multi-color image (for example, a two-color image, a three-color image, or a full color).
  • the configuration disclosed in the above-described embodiment is applied regardless of whether the cartridge B is attached to or detached from the apparatus main body A in a straight line, a combination of the attachment and removal paths, or a curved path. be able to.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Electrophotography Configuration And Component (AREA)
  • Dry Development In Electrophotography (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Valve Device For Special Equipments (AREA)
PCT/JP2014/074754 2013-09-12 2014-09-11 電子写真画像形成装置に用いられるカートリッジおよびドラムユニット Ceased WO2015037744A1 (ja)

Priority Applications (56)

Application Number Priority Date Filing Date Title
EP16200236.4A EP3168692B1 (en) 2013-09-12 2014-09-11 Cartridge and drum unit for electrophotographic image forming apparatus
CN201910756314.7A CN110426938B (zh) 2013-09-12 2014-09-11 用于电子照相式成像装置的盒和鼓单元
PH1/2022/553298A PH12022553298A1 (en) 2013-09-12 2014-09-11 Cartridge and drum unit for electrophotographic image forming apparatus
BR112016004701-0A BR112016004701B1 (pt) 2013-09-12 2014-09-11 Cartucho para aparelho de formação de imagem eletrofotográfica
PH1/2022/553294A PH12022553294A1 (en) 2013-09-12 2014-09-11 Cartridge and drum unit for electrophotographic image forming apparatus
PH1/2022/553300A PH12022553300A1 (en) 2013-09-12 2014-09-11 Cartridge and drum unit for electrophotographic image forming apparatus
KR1020167008847A KR101902662B1 (ko) 2013-09-12 2014-09-11 전자 사진 화상 형성 장치에 사용되는 카트리지 및 드럼 유닛
KR1020247037661A KR102775520B1 (ko) 2013-09-12 2014-09-11 카트리지
KR1020227006064A KR102409323B1 (ko) 2013-09-12 2014-09-11 카트리지
CN201910756321.7A CN110426939B (zh) 2013-09-12 2014-09-11 用于电子照相式成像装置的盒和鼓单元
KR1020227034016A KR102500155B1 (ko) 2013-09-12 2014-09-11 카트리지
EP14844462.3A EP3045979B1 (en) 2013-09-12 2014-09-11 Cartridge and drum unit used in electrophotographic image forming apparatus
RU2016113714A RU2670580C2 (ru) 2013-09-12 2014-09-11 Картридж и барабанный узел для электрофотографического устройства формирования изображений
CN201910756390.8A CN110456625B (zh) 2013-09-12 2014-09-11 用于电子照相式成像装置的盒和鼓单元
SG11201601874PA SG11201601874PA (en) 2013-09-12 2014-09-11 Cartridge and drum unit for electrophotographic image forming apparatus
KR1020237004956A KR102537839B1 (ko) 2013-09-12 2014-09-11 카트리지
KR1020257006424A KR20250030533A (ko) 2013-09-12 2014-09-11 카트리지
KR1020237035954A KR102730867B1 (ko) 2013-09-12 2014-09-11 카트리지
MX2018010916A MX389774B (es) 2013-09-12 2014-09-11 Cartucho y unidad de tambor para aparato electrofotografico de formacion de imagenes.
CN201910758109.4A CN110308634B (zh) 2013-09-12 2014-09-11 盒、鼓单元、力接收部件和法兰单元
CN201910756388.0A CN110442005B (zh) 2013-09-12 2014-09-11 盒
HK16107442.1A HK1219543B (zh) 2013-09-12 2014-09-11 用於电子照相式成像装置的盒和鼓单元
KR1020187027176A KR102045168B1 (ko) 2013-09-12 2014-09-11 카트리지
PL14844462T PL3045979T3 (pl) 2013-09-12 2014-09-11 Jednostka kartrydża i bębna stosowana w urządzeniach do tworzenia obrazu elektrofotograficznego
MX2021013090A MX2021013090A (es) 2013-09-12 2014-09-11 Cartucho y unidad de tambor para aparato electrofotográfico de formación de imágenes.
AU2014319287A AU2014319287A1 (en) 2013-09-12 2014-09-11 Cartridge and Drum Unit for Electrophotographic Image Forming Apparatus
KR1020217003235A KR102368313B1 (ko) 2013-09-12 2014-09-11 카트리지
EP20193253.0A EP3783441A1 (en) 2013-09-12 2014-09-11 Cartridge and drum unit for electrophotographic image forming apparatus
CN201910756320.2A CN110426934B (zh) 2013-09-12 2014-09-11 用于电子照相式成像装置的盒和鼓单元
KR1020227019754A KR102450988B1 (ko) 2013-09-12 2014-09-11 카트리지
PL16200236T PL3168692T3 (pl) 2013-09-12 2014-09-11 Jednostka kartrydża i bębna do urządzeń do tworzenia obrazu elektrofotograficznego
KR1020237017626A KR102593558B1 (ko) 2013-09-12 2014-09-11 카트리지
CA2923967A CA2923967A1 (en) 2013-09-12 2014-09-11 Cartridge and drum unit for electrophotographic image forming apparatus
KR1020197033196A KR102213064B1 (ko) 2013-09-12 2014-09-11 카트리지
MX2016003086A MX359041B (es) 2013-09-12 2014-09-11 Cartucho y unidad de tambor para aparato electrofotográfico de formación de imágenes.
CN201910756394.6A CN110426935B (zh) 2013-09-12 2014-09-11 用于电子照相式成像装置的盒和鼓单元
EP22176112.5A EP4116776B1 (en) 2013-09-12 2014-09-11 Cartridge and drum unit for electrophotographic image forming apparatus
ES14844462T ES2812924T3 (es) 2013-09-12 2014-09-11 Cartucho y unidad de tambor utilizados en un aparato de formación de imágenes electrofotográficas
PH1/2022/553299A PH12022553299A1 (en) 2013-09-12 2014-09-11 Cartridge and drum unit for electrophotographic image forming apparatus
CN201480050056.6A CN105531632B (zh) 2013-09-12 2014-09-11 用于电子照相式成像装置的盒和鼓单元
ZA2016/00728A ZA201600728B (en) 2013-09-12 2016-02-02 Cartridge and drum unit used in electrophotographic image forming apparatus
US15/052,192 US9791825B2 (en) 2013-09-12 2016-02-24 Cartridge and drum unit for electrophotographic image forming apparatus
PH12016500458A PH12016500458A1 (en) 2013-09-12 2016-03-09 Cartridge and drum unit for electrophotographic image froming apparatus
AU2017216445A AU2017216445A1 (en) 2013-09-12 2017-08-14 Cartridge and Drum Unit for Electrophotographic Image Forming Apparatus
US15/697,610 US10203652B2 (en) 2013-09-12 2017-09-07 Cartridge and drum unit for electrophotographic image forming apparatus
US16/052,060 US10671015B2 (en) 2013-09-12 2018-08-01 Cartridge and drum unit for electrophotographic image forming apparatus
AU2019213328A AU2019213328B2 (en) 2013-09-12 2019-08-06 Cartridge and drum unit for electrophotographic image forming apparatus
US16/867,657 US11199807B2 (en) 2013-09-12 2020-05-06 Cartridge and drum unit for electrophotographic image forming apparatus
AU2021203064A AU2021203064B2 (en) 2013-09-12 2021-05-13 Cartridge and drum unit for electrophotographic image forming apparatus
US17/504,626 US20220043389A1 (en) 2013-09-12 2021-10-19 Cartridge and drum unit for electrophotographic image forming apparatus
US17/951,441 US11579561B2 (en) 2013-09-12 2022-09-23 Cartridge and drum unit for electrophotographic image forming apparatus
US18/098,766 US12066786B2 (en) 2013-09-12 2023-01-19 Cartridge and drum unit for electrophotographic image forming apparatus
AU2023201536A AU2023201536B2 (en) 2013-09-12 2023-03-13 Cartridge and drum unit for electrophotographic image forming apparatus
US18/209,546 US12130579B2 (en) 2013-09-12 2023-06-14 Cartridge and drum unit for electrophotographic image forming apparatus
US18/897,197 US20250013188A1 (en) 2013-09-12 2024-09-26 Cartridge and drum unit for electrophotographic image forming apparatus
AU2024264602A AU2024264602A1 (en) 2013-09-12 2024-11-13 Cartridge and drum unit for electrophotographic image forming apparatus

Applications Claiming Priority (4)

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JP2013188917 2013-09-12
JP2013-188917 2013-09-12
JP2014183708A JP6415198B2 (ja) 2013-09-12 2014-09-09 カートリッジ
JP2014-183708 2014-09-09

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JP2017076036A (ja) * 2015-10-14 2017-04-20 キヤノン株式会社 電子写真感光ドラムユニット、カートリッジ、及びフランジ部材

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