CN113467209B - Processing box - Google Patents
Processing box Download PDFInfo
- Publication number
- CN113467209B CN113467209B CN202110293865.1A CN202110293865A CN113467209B CN 113467209 B CN113467209 B CN 113467209B CN 202110293865 A CN202110293865 A CN 202110293865A CN 113467209 B CN113467209 B CN 113467209B
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- China
- Prior art keywords
- coupling member
- process cartridge
- image forming
- forming apparatus
- intermediate coupling
- Prior art date
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- 238000012545 processing Methods 0.000 title abstract description 3
- 230000008878 coupling Effects 0.000 claims abstract description 276
- 238000010168 coupling process Methods 0.000 claims abstract description 276
- 238000005859 coupling reaction Methods 0.000 claims abstract description 276
- 238000000034 method Methods 0.000 claims abstract description 161
- 230000008569 process Effects 0.000 claims abstract description 161
- 239000002699 waste material Substances 0.000 claims description 58
- 238000007789 sealing Methods 0.000 claims description 26
- 230000007704 transition Effects 0.000 claims description 10
- 230000000717 retained effect Effects 0.000 claims description 8
- 238000003384 imaging method Methods 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 description 11
- 230000009471 action Effects 0.000 description 9
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 238000003825 pressing Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000000994 depressogenic effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- G03G21/10—Collecting or recycling waste developer
- G03G21/105—Arrangements for conveying toner waste
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Sustainable Development (AREA)
- Electrophotography Configuration And Component (AREA)
Abstract
The invention discloses a processing box, which is detachably installed in an imaging device with an imaging device side feeding part, and comprises: a photosensitive unit including a photosensitive unit frame; a developing unit including a developing unit frame; a photosensitive drum disposed in the photosensitive unit and supported by the photosensitive unit frame; a process cartridge-side coupling unit engageable with the image forming apparatus-side feeding member to transmit a driving force to the image forming apparatus-side feeding member when the process cartridge is mounted in the image forming apparatus; the process cartridge side coupling unit further includes an intermediate coupling member engageable with the image forming apparatus side feeding member to transmit a driving force to the image forming apparatus side feeding member when the process cartridge is mounted in the image forming apparatus, the intermediate coupling member being separable from the process cartridge and maintained in engagement with the image forming apparatus side feeding member when the process cartridge is taken out of the image forming apparatus.
Description
Technical Field
The present invention relates to a process cartridge used in an image forming apparatus for electrophotographic image formation, and more particularly to a waste toner conveying structure in a process cartridge.
Background
In an electrophotographic image forming apparatus, a structure is known in which elements such as a photosensitive drum and a developing roller (rotatable members related to image formation) are integrated into a cartridge that is detachably mountable with respect to the image forming apparatus. In such a structure, a structure for receiving a driving force from the apparatus main assembly to rotate the photosensitive drum in the cartridge is employed in many apparatuses. At this time, a structure is known in which a driving force is transmitted through engagement between the cartridge-side coupling member and a main assembly-side driving force transmitting portion of the apparatus (such as a driving pin).
As shown in fig. 1 and 2, the related art discloses a process cartridge detachably mounted in an image forming apparatus having a waste toner discharging part 730 thereon for discharging waste toner removed from a photosensitive drum, the image forming apparatus having a waste toner receiving unit therein for receiving the waste toner discharged from the waste toner discharging part 730, the waste toner receiving unit including a spring coupling 44, a feed fin 45, a machine conveying screw 80c, the spring coupling 44 being rotatable by receiving a driving force of the waste toner discharging part 730, the spring coupling 44 further rotating the feed fin 45 such that the waste toner sweeps into the machine conveying screw 80c, the machine conveying screw 80c again conveying the toner into a waste toner accommodating part preset in the image forming apparatus. The process cartridge is mounted to the image forming apparatus along the J direction and removed from the image forming apparatus along the direction opposite to the J direction, with the closing and opening of the machine door of the image forming apparatus, a rotating arm 42 is interlocked with the opening and closing actions of the machine door, when the machine door is opened, the rotating arm 42 rotates upward, at this time, after the process cartridge is mounted in place along the J direction, an arm contact portion 832f on the waste toner discharging unit on the process cartridge snaps into a notch opening and closing portion on the rotating arm 42, at this time, the waste toner discharging unit 730 is held by the tension of the coupling spring 31 and is located on the upper side of the spring coupling member 44, when the machine door is closed, the rotating arm 42 rotates downward in response to the actions of the machine door, and toggles the arm contact portion 832f downward, the downward moving arm contact portion 832f moves downward, the waste toner discharging unit 730 moves downward against the tension of the coupling spring 31, a groove portion 730b on the waste toner discharging unit 730 engages with the coupling portion 44b of the spring coupling member 44, and when the waste toner discharging unit 730 rotates with the drum, the rotating screw 45 rotates in response to the rotating drum, and the waste toner is transferred to the rotating screw 80c in response to the rotating drum, and the waste toner is transferred to the rotating screw 80.
Disclosure of Invention
The technical problem solved by the invention is to provide further development of the prior art.
The invention is realized by the following technical scheme:
a process cartridge detachably mountable in an image forming apparatus including an image forming apparatus side feeding member, said process cartridge comprising:
A photosensitive unit including a photosensitive unit frame;
a developing unit including a developing unit frame;
a photosensitive drum disposed in the photosensitive unit and supported by the photosensitive unit frame;
a process cartridge-side coupling unit engageable with the image forming apparatus-side feeding member to transmit a driving force to the image forming apparatus-side feeding member when the process cartridge is mounted in the image forming apparatus;
The process cartridge side coupling unit further includes an intermediate coupling member engageable with the image forming apparatus side feeding member to transmit a driving force to the image forming apparatus side feeding member when the process cartridge is mounted in the image forming apparatus, the intermediate coupling member being separable from the process cartridge and maintained in engagement with the side feeding member when the process cartridge is taken out of the image forming apparatus.
Further, the process cartridge-side coupling unit further includes a first coupling member provided on an upper side of the intermediate coupling member with respect to a gravitational direction and engageable with the intermediate coupling member to transmit a driving force to the intermediate coupling member, the first coupling member being separable from the intermediate coupling member when the process cartridge is taken out of the image forming apparatus.
Further, the intermediate coupling member is provided with a waste toner discharge port for conveying waste toner into the image forming apparatus, and the photosensitive frame is provided with a sealing member for sealing the waste toner discharge port.
Further, the process cartridge-side coupling unit further includes a first coupling member provided with a sealing member on the photosensitive frame, the first coupling member being engageable with the intermediate coupling member to transmit a driving force, the sealing member sealing the waste toner discharge port on the intermediate coupling member when the process cartridge is not mounted in the image forming apparatus.
Further, the photosensitive unit further includes a conveying screw for conveying the waste toner removed from the photosensitive drum, the conveying screw conveying the waste toner in a direction parallel to an axial direction of the photosensitive drum, the process cartridge side coupling unit includes a first coupling member engageable with the conveying screw to receive a driving force of the conveying screw when the process cartridge is mounted in the image forming apparatus, and an intermediate coupling member engageable with the image forming apparatus side feeding member to transmit the driving force from the first coupling member.
Further, the image forming apparatus has therein a rotating arm that is capable of interlocking with a machine door of the image forming apparatus, the process cartridge is provided with a supporting member that supports the intermediate coupling member, the intermediate coupling member is provided with an arm contact portion, and when the process cartridge is mounted in the image forming apparatus and the machine door is closed, the rotating arm is capable of driving the arm contact portion to move so that the intermediate coupling member moves relative to the supporting member, and the supporting member releases the support of the intermediate coupling member.
Further, the photosensitive unit frame is provided with a supporting member, the supporting member is provided with a holding portion, the intermediate coupling member is provided with a supported portion which can be held on the holding portion, the intermediate coupling member is further provided with an intermediate supporting portion which is connected with the supported portion, and the intermediate supporting portion is elastically deformable.
Further, the photosensitive unit frame is provided with a supporting member, the supporting member is provided with a holding portion, the intermediate coupling member is provided with a supported portion which can be held on the holding portion, the intermediate coupling member is further provided with an intermediate supporting portion which couples the supported portion and the intermediate coupling member main body portion, and when the intermediate coupling member receives an external force, the supported portion can be disengaged from the main body structure of the intermediate coupling member.
Further, the process cartridge-side coupling unit further includes a first coupling member engageable with the intermediate coupling member, and the photosensitive unit frame is provided with a guide portion that guides the intermediate coupling member to move in a direction intersecting the gravitational direction to a retracted position away from the first coupling member in the axial direction of the photosensitive drum.
Further, the intermediate coupling member is provided with a transition surface for receiving a force from the process cartridge to push the intermediate coupling member to move downward in the gravitational direction after the intermediate coupling member is retained in the image forming apparatus.
The invention has the technical effects that: further developments of the prior art are provided, on the one hand, by the structure that the process cartridge side coupling unit drives the image forming apparatus side feeding part to realize waste toner transfer, the waste toner accommodating part in the process cartridge can be canceled, the waste toner is directly transported from the process cartridge to the image forming apparatus, the size of the process cartridge can be greatly reduced under the condition that the page yield of the process cartridge is ensured, and the production cost and the packaging and transportation cost of the process cartridge are reduced.
On the other hand, by the intermediate coupling member which can remain in the image forming apparatus, the probability of failure of the process cartridge-side coupling unit is reduced by the engagement and disengagement between the first coupling member and the intermediate coupling member at the time of mounting and removing the process cartridge during the reinstallation after the first mounting and removing of the process cartridge.
In still another aspect, after the intermediate coupling member is combined with the side feeding member in the image forming apparatus, the first coupling member does not need to be provided at the telescopic mechanism, since the telescopic movement of the first coupling member is canceled during the plurality of mounting and removing of the process cartridge, the first coupling member can more stably transmit the driving force, and the first coupling member does not have a problem that it may be detached from the process cartridge during the removing of the process cartridge from the image forming apparatus.
In still another aspect, after the intermediate coupling is coupled to the side feeding member in the image forming apparatus, the process cartridge side coupling unit is engaged with the side feeding member of the image forming apparatus without relying on the interlocking action of the machine door of the image forming apparatus, and therefore, even when the interlocking structure between the rotation shaft in the image forming apparatus and the machine door malfunctions due to long-time use, the process cartridge side coupling unit can be well engaged with and disengaged from the side feeding member of the image forming apparatus during the process of mounting and removing the process cartridge.
Drawings
Fig. 1 is a schematic view of a prior art process cartridge waste toner transfer mechanism;
FIG. 2 is a schematic view of a prior art process cartridge waste toner transfer mechanism mated with an image forming apparatus;
Fig. 3 is a schematic perspective view of a process cartridge in embodiment 1 of the present invention;
Fig. 4 is a schematic perspective view of another view of the process cartridge in embodiment 1 of the present invention;
fig. 5 is a schematic view of the structure of the process cartridge waste toner conveying path in embodiment 1 of the present invention;
fig. 6 is a schematic exploded view of a process cartridge-side coupling unit in embodiment 1 of the present invention;
fig. 7 is a schematic view of the structure of the process cartridge-side coupling unit in embodiment 1 of the present invention when the process cartridge-side coupling unit is pre-engaged with the image forming apparatus-side feeding member;
fig. 8 is a partially enlarged schematic view of the structure in which the intermediate coupling member is supported by the supporting member in the process cartridge-side coupling unit in embodiment 1 of the present invention;
FIG. 9 is a schematic view showing the structure of the process cartridge-side coupling unit of embodiment 1 of the present invention when pre-coupled with the image forming apparatus-side feeding member after removing the supporting member;
FIG. 10 is a schematic view showing a sectional structure of a process cartridge-side coupling unit and an image forming apparatus-side pre-engaging member in embodiment 1 of the present invention;
FIG. 11 is a schematic sectional view showing the structure of the process cartridge-side coupling unit in accordance with embodiment 1 of the present invention when engaged with the image forming apparatus-side feeding member;
FIG. 12 is a schematic view showing a partial structure of a photosensitive unit of the process cartridge in embodiment 1 of the present invention on a side of a process cartridge-side coupling unit;
FIG. 13 is a partially exploded view of the photosensitive unit of the process cartridge of embodiment 1 of the present invention on the cartridge-side coupling unit side;
FIG. 14 is a schematic view showing the structure of the process cartridge-side coupling unit in embodiment 1 of the present invention when disengaged from the image forming apparatus-side feeding member;
FIG. 15 is a schematic view showing the structure of the process cartridge-side coupling unit in embodiment 2 of the present invention when disengaged from the image forming apparatus-side feeding member;
Fig. 16 is a schematic view of a structure of a process cartridge-side coupling unit in embodiment 2 of the present invention when disengaged from an image forming apparatus-side feeding member after removal of an image forming apparatus-side sealing member;
FIG. 17 is a schematic view showing the structure of the process cartridge-side coupling unit in accordance with embodiment 3 of the present invention when the process cartridge-side coupling unit is pre-engaged with the image forming apparatus-side feeding member;
FIG. 18 is a schematic view showing the structure of the process cartridge-side coupling unit in embodiment 3 of the present invention when disengaged from the image forming apparatus-side feeding member;
fig. 19 is a schematic view of the structure of embodiment 3 of the present invention when the process cartridge-side coupling unit is disengaged from the image forming apparatus-side feeding member.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the specification, the upper side is an upper side in the gravity direction based on the state in which the imaging device is in at the time of installation, but is not limited to a right upper side in the gravity direction, and one is located on a further upper side with respect to the gravity direction, that is, an upper side.
Example 1
As shown in fig. 1 and 2, the process cartridge of the present invention includes a photosensitive unit a including a photosensitive unit frame 1 and a photosensitive drum 2 rotatably supported by the photosensitive unit frame 1 therein; the developing unit B includes a developing unit frame 51 and a developing roller 52 supported by the developing unit frame B and rotatable. On one side of the process cartridge in the longitudinal direction, a first power receiving portion 3 that receives an external driving force to drive the photosensitive drum 2 to rotate, and a second power receiving portion 53 that receives an external driving force to rotate to drive the developing roller are provided. The process cartridge is mounted in the image forming apparatus in a movable manner along the longitudinal direction thereof, in other words, in a movable manner in a direction parallel to the photosensitive drum 2.
As shown in fig. 3 to 9, the process cartridge of the present invention is a schematic view of a structure in which waste toner is transported to the outside of the process cartridge. Wherein the process cartridge waste toner conveying portion includes: a conveyor screw 7, a first coupling part 11, an intermediate coupling part 12. Wherein the first coupling member 11 and the intermediate coupling member 12 together constitute a process cartridge-side coupling unit, and waste toner scraped off from the photosensitive drum 2 by a cleaning member (not shown in the drawings) provided in the photosensitive unit a is transferred through a waste toner conveying member of the process cartridge. The drive transmission path of the waste toner conveying portion is as follows, and the photosensitive drum 2 receives a drive force from the image forming apparatus through the first power receiving portion 3 provided at one axial end thereof, then passes through the drum gear 4 provided at the other end of the photosensitive drum 2, then transmits to the intermediate gear 5, then transmits to the conveying screw gear 6, and then transmits to the conveying screw 7. In addition, from the conveying screw 7, the driving force is sequentially transmitted to the first coupling member 11, the intermediate coupling member 12, and the spring coupling member 104 of the image forming apparatus in the following order. In this way, the waste toner is discharged from the photosensitive unit a into the image forming apparatus. The waste toner conveyed to the spring coupling member 104 is conveyed by a conveying fin 105 in the conveying portion of the image forming apparatus to an image forming apparatus conveying screw (not shown in the drawing) provided in a screw conveying passage in the image forming apparatus, and is conveyed into a waste toner cartridge (not shown in the drawing) in the image forming apparatus by a conveying force of the image forming apparatus conveying screw.
The sealing surface 13a of the supporting member 13 and the photosensitive unit frame 1 are fixed on the photosensitive unit frame 1 by adopting an ultrasonic welding or gluing mode, the sealing surface 13a is in sealing contact with the photosensitive unit frame 1, the first connecting member 11 is inserted into the supporting member 13 from top to bottom, the first connecting member 11 has a shape with a small lower end and a big upper end, the upper end is provided with a driving pin 11a for receiving driving force, and the conveying screw 7 is provided with a driving transmission blade 7b for transmitting driving force to the driving pin 11 a. The intermediate coupling member 12 is inserted into the supporting member 13 from below the supporting member 13, the upper portion of the intermediate coupling member 12 is provided with an upper end coupling portion 12a, the lower portion thereof is provided with a lower end coupling portion 12d, the lower portion of the first coupling member 11 is provided with a first coupling member force output portion 11b that can transmit a driving force to the upper end coupling portion 12a, and the lower end coupling portion 12d of the intermediate coupling member 12 can be combined with the spring coupling 104 in the image forming apparatus to transmit the driving force. Preferably, the upper end coupling portion 12a is configured in a plate-like rib shape, the lower end coupling portion 12d is in a groove shape, and the first coupling member force output portion 11b is in a groove shape.
Referring to fig. 6, 7, 8 and 12, the lower end of the supporting member 13 is provided with a holding portion 13b, the intermediate coupling member 12 is provided with a held portion 12b, the held portion 12b is provided on wing portions 12c extending radially to both sides from the main body portion of the intermediate coupling member 12, preferably, the holding portion 13b is shaped as a hanging table, the held portion 12b is shaped as a hook structure engageable with the holding portion 13b and supportable by the holding portion 13b, the held portion 12b includes a supported portion 12b2 contactable with the holding portion 13b and an intermediate supporting portion 12b1 connecting the wing portions 12c and the held portion 12b, a urging member 16, preferably, a compression spring, is provided between the photosensitive unit frame 1 and the intermediate coupling member 12, the urging member 16 is for providing the intermediate coupling member 12 with a lateral force to the intermediate coupling member 12 in holding contact with the holding portion 13b and supporting the supported portion 12b, and thus the intermediate coupling member 12 is supported on the supporting member 13.
Referring to fig. 9,10 and 11, in the process of mounting the process cartridge to the image forming apparatus, first, as the process cartridge is mounted, the intermediate coupling member 12 is positioned above the image forming apparatus side feeding member, the combination of the spring coupling 104 and the feeding fin 105 is referred to as the image forming apparatus side feeding member, the image forming apparatus side feeding member is mounted on the image forming apparatus side sealing member 102 and constitutes a passage through which waste toner is supplied with the image forming apparatus side sealing member 102, and then, the machine door of the image forming apparatus is closed, the rotating arm 42 (see fig. 2) in the image forming apparatus is rotated downward in response to the closing action of the machine door, In this embodiment, the arm contact portion that contacts the swivel arm 42 is provided as the wing portion 12c, and the wing portion 12c receives the force applied by the swivel arm 42 through the wing portion 12c as the arm contact portion, and the wing portion 12c drives the intermediate coupling member 12 to move downward in the process of rotating the swivel arm 42 downward and pressing down the wing portion 12c, and the supported portion 12b2 will be out of contact with the holding portion 13b, and the holding portion 13b releases the support of the intermediate coupling member 12, which will be described later. Fig. 10 is a state in which the intermediate coupling member 12 is not depressed and supported by the holding portion 13b, and fig. 11 is a state in which the intermediate coupling member 12 has been depressed and unsupported by the holding portion 13 b. In fig. 10, the lower end coupling portion 12d is positioned at the upper end of the coupling portion 104a of the spring coupling 104 without being coupled thereto, and in fig. 11, the intermediate coupling member 12 is moved down and the lower end coupling portion 12d is completely engaged with the coupling portion 104a, since the spring coupling 104 has elasticity, even if the lower end coupling portion 12d is not aligned up and down with the coupling portion 104a, so that the intermediate coupling member 12 can be ensured to be normally moved down by compression of the spring coupling 104, as the intermediate coupling member 12 rotates, when the lower end coupling portion 12d is aligned up and down with the coupling portion 104a, the coupling member 104a will rise under the elastic force of the spring coupling member 104 to engage with the lower end coupling portion. The amount of engagement between the first coupling member force output non-portion 11b and the upper end coupling portion 12a of the intermediate coupling member 12 in the up-down direction is set such that the first coupling member force output portion 11b remains engaged with the upper end coupling portion 12a after the intermediate coupling member 12 is moved downward by the rotating arm 42. Therefore, in the image forming process of the process cartridge, the waste toner removed from the photosensitive drum 2 is conveyed to the inner space of the first coupling member 11 via the conveying screw 7, then enters the inner space of the intermediate coupling member 12, then enters the inner space between the image forming apparatus side feeding member and the image forming apparatus side sealing member 102, finally sweeps the waste toner remaining in the image forming apparatus side feeding member inner space into the screw passage 103 where the image forming apparatus conveying screw is located via the feeding fin 105, a finer eccentric passage 105 is provided between the screw passage 103 where the conveying screw of the image forming apparatus is located and the image forming apparatus side feeding member, the eccentric channel is eccentrically disposed from both the outer circumferential profile defined by the rotation of the feed fin 105 and the circular profile in which the screw channel 103 is located to reduce the dust-lifting effect of the waste toner and reduce the possibility of the waste toner contaminating the inside of the image forming apparatus.
Referring to fig. 12, 13 and 14, the photosensitive unit frame 1 is further provided with a seal member 14 for sealing the waste toner discharge port 12f of the process cartridge-side coupling unit, the seal member 14 is provided at the lower end of the waste toner discharge port 12f and is movable in a longitudinal direction parallel to the axial direction of the photosensitive drum 2, and specifically, a pressing member 15 is provided between the photosensitive unit frame 1 and the seal member 14, preferably, the pressing member 15 is a compression spring, one end of the pressing member 15 abuts against the photosensitive unit frame 1, the other end abuts against a pressing member abutment 14c of the seal member 14, a seal portion 14b is provided at the upper end of the seal member 14, and preferably, the seal portion 14b adopts a seal sponge. The photosensitive unit frame 1 is further provided with a guide portion for guiding the movement of the intermediate coupling member, preferably, the guide portion is composed of a guide groove portion 1a and a guide rail portion 1b for guiding the movement of the intermediate coupling member 12 in a direction intersecting with the gravitational direction, preferably, both the guide groove portion 1a and the guide rail portion 1b extend in the axial direction parallel to the photosensitive drum 2, the guide groove portion 1a is engageable with the upper end coupling portion 12a of the intermediate coupling member 12, and the guide rail portion 1b is engageable with the lower end coupling portion 12d of the intermediate coupling member 12. When the first new process cartridge is first mounted in the image forming apparatus, the intermediate coupling member 12 is released from the support by the supporting member 13 by the closing action of the machine door cover of the image forming apparatus, and the intermediate coupling member 12 is retained in the image forming apparatus with the process cartridge again taken out, in this embodiment, the intermediate supporting portion 12b1 is provided to have an elastic structure, for example, made of an elastic rubber or made of a spring steel sheet, so that the intermediate supporting portion 12b1 is not broken when the intermediate coupling member 12 is biased to move downward by the rotating arm 42 of the image forming apparatus, resulting in a problem that the supported portion 12b2 may fall into the image forming apparatus. When the process cartridge is mounted into the image forming apparatus, the seal member 14 provided at the lower end of the waste toner discharging port 12f is stopped by the image forming apparatus side seal member 102 and the compression pressing member 15 is moved relative to the photosensitive unit frame 1, the waste toner discharging port 12f is gradually opened and finally fully opened and the intermediate coupling member 12 will be positioned above the image forming apparatus side feeding member in the pre-engagement position. Subsequently, the intermediate coupling member 12 and the image forming apparatus side feeding member perform the meshing action by the closing action of the machine door cover of the image forming apparatus and the action of the image forming apparatus driving the photosensitive drum of the process cartridge and the like to perform the rotational movement.
When the image forming apparatus is in trouble such as a jam during image formation, and when it is necessary to take out the process cartridge, the intermediate coupling member 12 is kept in the image forming apparatus in the state shown with reference to fig. 14, specifically, when the process cartridge is taken out of the image forming apparatus in the direction M in fig. 14, the sealing member 14 is moved toward the supporting member 13 by the urging force of the urging member 15, and at this time, the intermediate coupling member 12 has been kept in the image forming apparatus, and therefore, the sealing portion 14b on the sealing member 14 seals the downward opening portion of the supporting member 13, preventing leakage of the waste toner from the process cartridge, and the sealing portion 14b is provided with a sponge material having elasticity and is designed to a proper height so that the sealing portion 14b has a larger compression amount and seals the waste toner discharge port of the intermediate coupling member 12 when the intermediate coupling member 12 is kept on the supporting member 13 in the image forming apparatus, and the sealing portion 14b has a smaller compression amount than when the intermediate coupling member 12 is kept off from the supporting member 13, and this compression amount can compress the waste toner of the same sealing member 11 downward.
Referring to fig. 12 and 14, when the old process cartridge is exhausted and another new process cartridge is required to be replaced, since the intermediate coupling member 12 on the old process cartridge has been retained in the image forming apparatus, which causes the height at which the image forming apparatus side feeding member is lifted, the intermediate coupling member 12 of the new process cartridge is blocked by the intermediate coupling member retained in the image forming apparatus and moved to a retracted position away from the first coupling member 11 in a direction intersecting the gravitational direction against the elastic force of the urging member 16, at which time the intermediate coupling member 12 is brought into engagement with the intermediate coupling member 12 retained in the image forming apparatus by sliding into the above-described guide groove portion 1a and guide rail portion 1b to expose the first coupling member 11. When a new process cartridge needs to be taken out of the image forming apparatus again, the intermediate coupling member 12 moves toward the first coupling member 11 under the elastic force of the urging member 16, and during the movement of the intermediate coupling member 12, when the upper end coupling portion 12a is aligned with the first coupling member force output portion 11b in the movement direction of the intermediate coupling member 12, the intermediate coupling member 12 is again engaged with the first coupling member 11, the sealing member 14 seals the intermediate coupling member 12, and when the upper end coupling portion 12a is not aligned with the first coupling member force output portion 11b in the movement direction of the intermediate coupling member 12, the movement of the intermediate coupling member 12 is stopped, and the sealing member 14 seals the supporting member 13. Alternatively, the first coupling member 11 may be provided with a structure of a circumferential rotational positioning, for example, a pair of torsion springs are installed at positions where the inner circumferential surfaces of the supporting members 13 are symmetrical with respect to the axial direction, one free leg portion of the pair of torsion springs extends radially inward, the first coupling member 11 may be provided as a combination of upper and lower members with a circumferential free gap, one outer circumferential surface of the opposite lower end of the first coupling member 11 is made elliptical and is in contact with the free leg portion, and when the process cartridge is taken out of the image forming apparatus, the pair of torsion springs exert an elastic force on the outer circumferential surface of the elliptical shape after the first coupling member 11 is disengaged from the intermediate coupling member so that the one opposite lower end of the first coupling member 11 rotates with respect to the one upper end and finally maintains a fixed angular positional relationship with the holding member 13 in the rotational direction, and thus the intermediate coupling member 12 can smoothly complete engagement with the first coupling member 11 each time.
Example 2
A second embodiment of the process cartridge-side coupling unit will be described.
The rest of the structure of the process cartridge except the process cartridge side coupling unit is the same as that of embodiment 1. Referring to fig. 15 and 16, in order to better disengage the process cartridge side coupling unit from the image forming apparatus side feeding member when the process cartridge is taken out of the image forming apparatus and to better engage the process cartridge with the intermediate coupling member remaining in the image forming apparatus when the process cartridge is mounted into the image forming apparatus, in this embodiment, a smooth transition process is performed at an upper end portion of the intermediate coupling member 12, specifically, a transition surface 12e is provided on the intermediate coupling member 12, the transition surface 12e may be provided as a slope or an arc surface, a lower edge of an inner circumferential surface of the first coupling member 11 is provided as a contact transition surface 12e when the process cartridge is taken out of the image forming apparatus, the intermediate coupling member 12 is pressed downward by a distance by the contact transition surface 12e, and the intermediate coupling member 12 is supported by the spring coupling member 104 to allow the intermediate coupling member 12 to move downward by a distance to compress the spring coupling member 104 so that the first coupling member 11 is smoothly disengaged from the intermediate coupling member 12. In addition, when the upper end coupling portion 12a of the intermediate coupling member 12 is rotated to a state where the extending direction thereof is not parallel to the taking-out direction, which makes it difficult to take out the process cartridge, the portion of the intermediate coupling member 12 inserted into the image forming apparatus side sealing member 102 may be set in a clearance fit so that the rotational axis of the intermediate coupling member 12 may be inclined at an angle with respect to the rotational axis of the image forming apparatus side feeding member so that the first coupling member 11 and the intermediate coupling member 12 are disengaged to take out the process cartridge. Alternatively, the upper end coupling portion 12a may be made of a material having elastic deformation such as rubber, and the first coupling member 11 and the intermediate coupling member 12 may be separated from each other by elastic deformation of the upper end coupling portion 12a to take out the process cartridge. When the process cartridge is mounted into the image forming apparatus, the lower edge of the outer circumferential surface of the supporting member 13 is set to contact the transition surface 12e, the intermediate coupling member 12 is pressed downward by a distance by the contact transition surface 12e, and the intermediate coupling member 12 is supported by the spring coupling member 104 to allow the intermediate coupling member 12 to move downward by compressing the spring coupling member 104 a distance so that the first coupling member 11 and the intermediate coupling member 12 are smoothly engaged.
Example 3
A third embodiment of the process cartridge-side coupling unit will be described.
The rest of the structure of the process cartridge except the process cartridge side coupling unit is the same as that of embodiment 1. With reference to figures 17 and 18 of the drawings,
Since the held portion 12b needs to be supported on the supporting member 13, it has a certain height, and when the process cartridge is mounted and removed, there is a certain angle that causes the first coupling member 11 and the supporting member 13 to interfere with the held portion 12b, and although the holding portion 12b may be provided to be elastically deformable to avoid the problem of failing to mount and remove, it also brings inconvenience to the mounting and removal of the process cartridge. In this embodiment, the supported portion 12b21 of the supported portion 12b is provided so as to surround the surrounding portion of the holding portion 13b, and one notch 12b13 is provided in the intermediate support portion, in other words, a thin wall portion 12b11 is provided between the supported portion 12b21 and the support bottom portion 12b12 of the intermediate support portion, and the process cartridge is mounted in the image forming apparatus, and the thin wall portion 12b11 is broken while the supported portion 12b21 is supported on the holding portion 13b to prevent falling into the image forming apparatus during the process of the wing portion of the intermediate coupling member 12 being forced downward by the rotating arm in accordance with the closing of the machine door cover of the image forming apparatus. Referring to fig. 18, when the process cartridge is taken out from the image forming apparatus, the intermediate support member 12 is retained in the image forming apparatus, and at this time, only the bottom support portion 12b12 of the intermediate support portion 12b1 remains on the support member 12, and since the bottom support portion 12b12 protrudes only a small portion, interference with the bottom support portion 12b12 does not occur during the subsequent process cartridge mounting and taking out. Alternatively, the thin wall portion may be provided at the junction of the intermediate support portion 12b1 and the wing portion 12c, the entire intermediate support portion 12b1 may be retained on the retaining portion 13b, or the intermediate support portion 12b1 may be provided so as to be composed of two members which are engaged with each other, and the intermediate support portion 12b1 is separated by being separated from contact with each other after being forced by a clip.
Example 4
A third embodiment of the process cartridge-side coupling unit will be described. In this embodiment, the structure of the process cartridge-side coupling unit is substantially the same as that of embodiment 3. The difference is that a transition surface 12e is added to the intermediate transmission member 12 in this embodiment.
The invention has the beneficial effects that:
In one aspect, by driving the image forming apparatus side to the structure of the member to effect transfer of the waste toner by the process cartridge side coupling unit, the waste toner accommodating portion in the process cartridge can be eliminated, and the waste toner can be directly transported from the process cartridge to the image forming apparatus, so that the size of the process cartridge can be greatly reduced, and the production cost and the packaging and transportation cost of the process cartridge can be reduced, while ensuring the yield of the process cartridge pages.
On the other hand, by the intermediate coupling member which can remain in the image forming apparatus, the probability of failure of the process cartridge-side coupling unit is reduced by the engagement and disengagement between the first coupling member and the intermediate coupling member at the time of mounting and removing the process cartridge during the reinstallation after the first mounting and removing of the process cartridge.
In still another aspect, after the intermediate coupling member is combined with the side feeding member in the image forming apparatus, the first coupling member does not need to be provided at the telescopic mechanism, since the telescopic movement of the first coupling member is canceled during the plurality of mounting and removing of the process cartridge, the first coupling member can more stably transmit the driving force, and the first coupling member does not have a problem that it may be detached from the process cartridge during the removing of the process cartridge from the image forming apparatus.
In still another aspect, after the intermediate coupling is coupled to the side feeding member in the image forming apparatus, the process cartridge side coupling unit is engaged with the side feeding member of the image forming apparatus without relying on the interlocking action of the machine door of the image forming apparatus, and therefore, even when the interlocking structure between the rotation shaft in the image forming apparatus and the machine door malfunctions due to long-time use, the process cartridge side coupling unit can be well engaged with and disengaged from the side feeding member of the image forming apparatus during the process of mounting and removing the process cartridge.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A process cartridge detachably mountable in an image forming apparatus including an image forming apparatus side feeding member, said process cartridge comprising:
A photosensitive unit including a photosensitive unit frame;
a developing unit including a developing unit frame;
a photosensitive drum disposed in the photosensitive unit and supported by the photosensitive unit frame;
a process cartridge-side coupling unit engageable with the image forming apparatus-side feeding member to transmit a driving force to the image forming apparatus-side feeding member when the process cartridge is mounted in the image forming apparatus;
Wherein the process cartridge side coupling unit further includes an intermediate coupling member engageable with the image forming apparatus side feeding member to transmit a driving force to the image forming apparatus side feeding member when the process cartridge is mounted in the image forming apparatus, the intermediate coupling member being separable from the process cartridge and maintained in engagement with the image forming apparatus side feeding member when the process cartridge is taken out of the image forming apparatus; the intermediate coupling member is provided with a waste toner discharge port for conveying waste toner into the image forming apparatus, and the photoconductive unit frame is provided with a sealing member for sealing the waste toner discharge port; the photosensitive unit further includes a conveying screw for conveying the waste toner removed from the photosensitive drum, the conveying screw conveying the waste toner in a direction parallel to an axial direction of the photosensitive drum, the process cartridge side coupling unit includes a first coupling member engageable with the conveying screw to receive a driving force of the conveying screw when the process cartridge is mounted in the image forming apparatus, and an intermediate coupling member engageable with the image forming apparatus side feeding member to transmit the driving force from the first coupling member.
2. A process cartridge according to claim 1, wherein said process cartridge side coupling unit further includes a first coupling member provided on an upper side of said intermediate coupling member with respect to a gravitational direction and engageable with said intermediate coupling member to transmit a driving force to said intermediate coupling member, said first coupling member being separable from said intermediate coupling member when said process cartridge is taken out of said image forming apparatus.
3. A process cartridge according to claim 1, wherein said process cartridge side coupling unit further includes a first coupling member provided with a seal member on said photosensitive unit frame, said first coupling member being engageable with said intermediate coupling member to transmit a driving force, said seal member sealing a waste toner discharge port on said intermediate coupling member when said process cartridge is not mounted in said image forming apparatus.
4. A process cartridge according to claim 1, wherein said image forming apparatus has therein a rotary arm that is interlocked with a machine door of said image forming apparatus, said process cartridge is provided with a supporting member that supports said intermediate coupling member, said intermediate coupling member is provided with an arm contact portion, and when said process cartridge is mounted in said image forming apparatus and said machine door is closed, said rotary arm drives said arm contact portion to move so that said intermediate coupling member moves relative to said supporting member, and said supporting member releases the support of said intermediate coupling member.
5. A process cartridge according to claim 1, wherein said photosensitive unit frame is provided with a supporting member, said supporting member is provided with a holding portion, said intermediate coupling member is provided with a supported portion which can be held on said holding portion, said intermediate coupling member is further provided with an intermediate supporting portion which is connected to said supported portion, and said intermediate supporting portion is elastically deformable.
6. A process cartridge according to claim 1, wherein said photosensitive unit frame is provided with a supporting member, said supporting member is provided with a holding portion, said intermediate coupling member is provided with a supported portion which can be held on said holding portion, said intermediate coupling member is further provided with an intermediate supporting portion which couples said supported portion and said intermediate coupling member main body portion, and said supported portion can be disengaged from said holding portion when said intermediate coupling member receives an external force.
7. A process cartridge according to claim 1, wherein said process cartridge side coupling unit further includes a first coupling member engageable with said intermediate coupling member, and said photosensitive unit frame is provided with a guide portion that guides movement of said intermediate coupling member in a direction intersecting with a gravitational direction to a retracted position away from said first coupling member in an axial direction of said photosensitive drum.
8. A process cartridge according to claim 1, wherein said intermediate coupling member is provided with a transition surface for receiving a force from said process cartridge to push said intermediate coupling member downward in a gravitational direction after said intermediate coupling member is retained in said image forming apparatus.
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| CN202010245897X | 2020-03-31 | ||
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005266219A (en) * | 2004-03-18 | 2005-09-29 | Casio Electronics Co Ltd | Image forming apparatus |
| JP5902221B2 (en) * | 2014-03-20 | 2016-04-13 | シャープ株式会社 | Developer transport device and image forming apparatus |
| RS61366B1 (en) * | 2015-02-27 | 2021-02-26 | Canon Kk | Cartridge |
| CN109661619B (en) * | 2016-07-14 | 2021-11-16 | 株式会社理光 | Powder container, process cartridge and image forming apparatus |
| CA3084125A1 (en) * | 2016-08-26 | 2018-03-01 | Canon Kabushiki Kaisha | Cartridge and image forming apparatus |
| CN108614398B (en) * | 2016-12-12 | 2024-05-14 | 江西亿铂电子科技有限公司 | A toner cartridge with an openable and closable toner discharge port |
| JP6946686B2 (en) * | 2017-03-17 | 2021-10-06 | ブラザー工業株式会社 | Process cartridge |
| JP6957205B2 (en) * | 2017-05-31 | 2021-11-02 | キヤノン株式会社 | Cartridge and image forming equipment |
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