DE202019005994U1 - Rotary power transmission assembly - Google Patents

Abstract

Processing cassette having a developing unit and a photosensitive unit, the processing cassette being removably installed in an image forming apparatus, within which a vertically retractable and extending spacer member is provided, the processing cassette further comprising a force receiving member disposed below the developing unit, characterized that the force-absorbing element is provided with an axis of rotation about which the force-absorbing element is rotatable.

Description

field of technology

The present utility model relates to a processing cartridge in an image forming apparatus.

Technical background

The prior art image forming apparatus is equipped with a photosensitive driving element and a development driving element. The processing cartridge is detachably installed in the image forming apparatus and receives a driving force from the image forming apparatus to drive the photosensitive member and the developing member in the processing cartridge.

Overview of the invention

Technical problems

The object of the present utility model is primarily to provide a construction with which the distance between a drive head for the photosensitive element and a drive head for the developing element can be controlled.

Solutions to the problems

Technical solutions

• Eine Verarbeitungskassette umfasst eine Entwicklungseinheit und eine lichtempfindliche Einheit, wobei die Entwicklungseinheit ein Entwicklungselement und die lichtempfindliche Einheit ein lichtempfindliches Element umfasst, dadurch gekennzeichnet, dass die Verarbeitungskassette ferner eine Steuereinheit umfasst, die ein Steuerelement umfasst, wobei das Entwicklungselement entfernt von dem lichtempfindlichen Element oder nahe an diesem liegt, wenn das Steuerelement nahe an der Entwicklungseinheit oder entfernt von dieser angeordnet ist.

The object of the present utility model is primarily to provide a construction with which the distance between a drive head for the photosensitive element and a drive head for the developing element can be controlled. This is realized in particular as follows:

• A processing cartridge comprises a developing unit and a photosensitive unit, the developing unit comprising a developing element and the photosensitive unit comprising a photosensitive element, characterized in that the processing cartridge further comprises a control unit comprising a control element, the developing element remote from or close to the photosensitive element This is the case when the control element is arranged close to or away from the development unit.

The control unit includes a control element that can move between a first position and a second position, the control element being arranged in its first position away from the development unit so that the photosensitive element and the development element are in contact with each other while the control element is in is arranged closer to the developing unit in its second position than in its first position, so that the developing element is not in contact with the photosensitive element.

The control unit includes a control element that can move between a first position and a second position, the control element being arranged in its first position away from the development unit so that the development element is close to the photosensitive element while the control element is in its second position is arranged closer to the developing unit than in its first position, so that the developing element is distant from the photosensitive element.

The control member is arranged on the developing unit and protrudes from the developing unit to obtain an external force.

The control unit includes a first gear member, a second gear member, and a third gear member disposed in the developing unit of the processing cartridge. The first gear member, the second gear member, and the third gear member are each provided with a gear. The first gear member is provided with a pivot rod with which the rotation of the first gear member can be controlled. The pivot rod is a control element. The gear on the second gear element meshes with the gear on the first gear element and transmits a force. The gear on the third gear element meshes with the gear on the second gear element and transmits a force. The third gear member is provided with a cam portion rotatable with the third gear member. With a swing of the swing rod, the cam portion is controlled to abut or not abut the photosensitive unit, thereby controlling the developing member and the photosensitive member to move away from or approach each other.

The control unit includes a push rod and a push rod. The push rod is a control element. The push rod is provided with a rotation axis and the push rod is provided with a rotation axis, the push rod and the push rod being connected to one another via a joint. Both the push rod and the push rod are arranged on the developing unit. The push rod is connected to the push rod at one end and projects at the other End towards the photosensitive unit. The push rod protrudes from the development unit. By rotating the push rod about its axis of rotation, the rotation of the push rod is controlled so that the push rod does not abut or press against the photosensitive unit, thereby bringing the developing member close to or away from the photosensitive member.

The control unit includes a first press rod, a second gear element and a third gear element. The first press rod is provided with a rack portion that engages the second gear member, while the second gear member engages the third gear member. The third gear member is provided with a cam portion. The first press rod protrudes from the development unit and is provided with an inclined surface. The first press rod is a control element. The first press rod receives an external force that brings the first press rod close to or away from the developing unit, causing the cam portion to engage or not engage the photosensitive unit to cause the developing member to move away from the photosensitive member or moved towards this.

The control unit includes a first press rod and a second push rod. The first press rod is a control element. The first press rod can move on the developing unit and is provided with an inclined surface. The second push rod rotates about a rotation axis arranged on the developing unit. The first press rod receives an external force that brings the first press rod close to or away from the developing unit, causing the second push rod to abut or not abut the photosensitive unit to cause the developing member to move away from the photosensitive member or moved towards it.

Advantageous effects of the invention

Beneficial effects

With the construction described above, the developing member can be effectively controlled to move away from or toward the photosensitive member.

Brief description of the attached drawings

• 1 zeigt eine schematische Darstellung der Verarbeitungskassette des vorliegenden Patents, wenn das Entwicklungselement und das lichtempfindliche Element miteinander in Berührung stehen,
• 2 zeigt eine schematische Darstellung der Verarbeitungskassette des vorliegenden Patents, wenn das Entwicklungselement und das lichtempfindliche Element voneinander getrennt sind.

Presentation of the illustrations

• 1 Fig. 12 shows a schematic representation of the processing cartridge of the present patent when the developing member and the photosensitive member are in contact with each other,
• 2 Fig. 12 shows a schematic representation of the processing cartridge of the present patent when the developing member and the photosensitive member are separated from each other.

Best possible exemplary embodiments for carrying out the invention

Optimal embodiments of the present invention

A processing cartridge comprises a developing unit and a photosensitive unit, the developing unit comprising a developing element and the photosensitive unit comprising a photosensitive element, characterized in that the processing cartridge further comprises a control unit comprising a control element, the developing element remote from or close to the photosensitive element This is the case when the control element is arranged close to or away from the development unit.

The control unit includes a control element that can move between a first position and a second position, the control element being arranged in its first position away from the development unit so that the photosensitive element and the development element are in contact with each other while the control element is in is arranged closer to the developing unit in its second position than in its first position, so that the developing element is not in contact with the photosensitive element.

The control unit includes a control element that can move between a first position and a second position, the control element being arranged in its first position away from the development unit so that the development element is close to the photosensitive element while the control element is in its second position is arranged closer to the developing unit than in its first position, so that the developing element is distant from the photosensitive element.

The control member is arranged on the developing unit and protrudes from the developing unit to obtain an external force.

The control unit includes a first gear member, a second gear member, and a third gear member disposed in the developing unit of the processing cartridge. The The first gear element, the second gear element and the third gear element are each provided with a gear. The first gear member is provided with a pivot rod with which the rotation of the first gear member can be controlled. The pivot rod is a control element. The gear on the second gear element meshes with the gear on the first gear element and transmits a force. The gear on the third gear element meshes with the gear on the second gear element and transmits a force. The third gear member is provided with a cam portion rotatable with the third gear member. With a swing of the swing rod, the cam portion is controlled to abut or not abut the photosensitive unit, thereby controlling the developing member and the photosensitive member to move away from or approach each other.

The control unit includes a push rod and a push rod. The push rod is a control element. The push rod is provided with a rotation axis and the push rod is provided with a rotation axis, the push rod and the push rod being connected to one another via a joint. Both the push rod and the push rod are arranged on the developing unit. The push rod is connected to the push rod at one end and protrudes toward the photosensitive unit at the other end. The push rod protrudes from the development unit. By rotating the push rod about its axis of rotation, the rotation of the push rod is controlled so that the push rod does not abut or press against the photosensitive unit, thereby bringing the developing member close to or away from the photosensitive member.

The control unit includes a first press rod, a second gear element and a third gear element. The first press rod is provided with a rack portion that engages the second gear member, while the second gear member engages the third gear member. The third gear member is provided with a cam portion. The first press rod protrudes from the development unit and is provided with an inclined surface. The first press rod is a control element. The first press rod receives an external force that brings the first press rod close to or away from the developing unit, causing the cam portion to engage or not engage the photosensitive unit to cause the developing member to move away from the photosensitive member or moved towards this.

The control unit includes a first press rod and a second push rod. The first press rod is a control element. The first press rod can move on the developing unit and is provided with an inclined surface. The second push rod rotates about a rotation axis arranged on the developing unit. The first press rod receives an external force that brings the first press rod close to or away from the developing unit, causing the second push rod to abut or not abut the photosensitive unit to cause the developing member to move away from the photosensitive member or moved towards it.

Embodiments of the invention

Embodiments of the present invention

The content of the present utility model is explained below in conjunction with the attached drawings and exemplary embodiments, whereby the exemplary embodiments used in the present utility model only serve to explain the content of the present utility model and are not intended to limit the present utility model.

First embodiment

How out 1 results, the processing cartridge is provided with a developing unit 41 and a photosensitive unit 31, the developing unit 41 being provided with a developing member 42 and the photosensitive unit 31 being provided with a photosensitive member 32. The developing unit 41 may move toward or away from the photosensitive unit 31 so that the developing member 42 comes into contact with (ie separated from) the photosensitive member 32 or not. As in 1 As shown, contact or non-contact (ie, separation) of the developing member 42 with the photosensitive member 32 is achieved by rotation of the developing unit 41 about a rotation axis 46b. Between the development unit 41 and the photosensitive unit 31, a spring element 95 is further provided, which applies a spring force to the development unit 41 and the photosensitive unit 31 in order to rotate the development unit 41 about the rotation axis 46b so that the development element 42 approaches the photosensitive element 32 approaches and comes into contact with it.

Out of 1 shows an image forming apparatus (ie, a printer, a copier, a facsimile machine, etc.) provided with a force applying member 61 rotatable about its own rotation axis 61a.

The processing cassette is also provided with a control unit comprising a push rod 10, a rotating rod 20 and a push rod 30. The push rod 10 is connected to the rotating rod 20 via a joint 10a. The rotating rod 20 is rotatable about an axis of rotation 20a. The push rod 30 is connected to the rotating rod 20 at one end by means of a joint 20b. The push rod 30 is rotatable about an axis of rotation 30a and rests with the other end on the development unit 41, the point on the development unit 41 where the push rod 30 rests on the development unit being on the other side of the rotation axis with respect to the push rod 10 46b is located. The further the location on the development unit 41 where the push rod 30 abuts on the development unit is from the axis of rotation 46b, the less force is required to separate the development unit 41. The entire control unit (the push rod 10, the rotating rod 20 and the push rod 30) is arranged on the photosensitive unit 31.

As in 1 As shown, when the force applying element 61 on the image forming apparatus is not in contact with the push rod 10 and thus does not exert any force on the push rod 10, the spring element 95 causes the development unit 41 to rotate about the rotation axis 61a and thereby the development unit 41 to move closer to the photosensitive unit 31, thereby bringing the developing member 42 into contact with the photosensitive member 32.

Out of 2 It can be seen that when the force application element 61 abuts the push rod 10 after a rotation and applies a thrust force to the push rod 10, the push rod 10 moves in the A direction shown and a rotation of the rotating rod 20 about the axis of rotation 20a in the B direction shown, whereupon the push rod 30 rotates under the action of the rotating rod 20 about the rotation axis 30a in the C direction shown and finally presses the developing unit 41 so that it rotates about the rotation axis 61a. The rotation of the developing unit 41 causes the developing member 42 to move in a direction away from the photosensitive member 32, so that the developing member 42 is eventually no longer in contact with (or separated from) the photosensitive member 32 and a distance L arises.

By providing a control unit on the photosensitive unit 31, the force of the force applying member 61 disposed above the photosensitive member 32 can be converted into a rotational force of the developing unit 41, with which the developing member 42 can be separated from the photosensitive member 32.

If the force application element 61 after a rotation about its axis of rotation 61a (from the in 2 position shown in 1 position shown) is no longer in contact with the push rod 10 and therefore no longer provides any thrust force, the development unit 41 rotates under the action of the spring element 95 about the axis of rotation 46b and returns to the in 1 shown state, with the push rod 30 being pressed by the developing unit 41 so that it rotates about the axis of rotation 30a (opposite to that indicated by the arrow C in 2 indicated direction) rotates and thereby a rotation of the rotating rod 20 about the axis of rotation 20a (opposite to that indicated by the arrow B in 2 direction shown) and thus finally a movement of the push rod 10 in one of the in 2 shown arrow A causes the opposite direction, which ultimately leads to both the development unit 41 and the control unit in the state according to 1 to return.

Second embodiment

In addition to the configurations shown in the first exemplary embodiment, the control unit can also adopt the configurations from this exemplary embodiment. Therefore, the same structural features and operation of the present embodiment as those of the first embodiment will not be described repeatedly.

As in 3 is shown, the control unit comprises a first gear element 40, a second gear element 50 and a third gear element 60, wherein the first gear element 40, the second gear element 50 and the third gear element 60 are each provided with a gear and are located on the photosensitive unit 31 . The first gear member 40 is provided with a pivot rod 40a with which the rotation of the first gear member 40 can be controlled. The gear on the second gear element 50 engages with the gear on the first gear element 40 and transmits a force. The gear on the third gear element 60 meshes with the gear on the second gear element 50 and transmits a force. The third gear member 60 is provided with a cam portion 60a rotatable with the third gear member 60.

How 3 As can be seen, the control unit is located when the force application element 61 is not in contact with the pivot rod 40a 3 shown state in which the cam section 60a does not rest on the developing unit 41 or there is no force on the developing unit 41 exerts, which can move it away from the photosensitive unit 31, the developing unit 41 approaching the photosensitive unit 31 under the action of the spring element 95, so that the developing element 42 comes into contact with the photosensitive element 32.

When the force applying member 61 rotates about the rotation axis 61a and abuts the pivot rod 40a, the pivot rod 40a is pushed out of the in by the force applying member 61 3 in the condition shown in 4 shown state and causes a rotation of the first gear element 40 in the in 4 shown E direction, wherein the second gear element 50 driven by the first gear element 40 rotates in the illustrated F direction and the third gear element 60 rotates driven by the second gear element 50 in the illustrated G direction. Since the cam portion 60a is rotatable with the third gear member 60, the cam portion 60a rotates in the FIG 4 position shown and exerts a force on the developing unit 41 to move it away from the photosensitive unit 31. This has the result that the development unit 41 moves around the axis of rotation 46b in the in 4 shown state, in which the developing unit 41 is located away from the photosensitive unit 31, so that the developing member 42 is not in contact with (or is separated from) the photosensitive member 32. How out 4 As can be seen, the location on the developing unit 41 where the cam portion 60a abuts the developing unit is on the other side of the rotation axis 46b with respect to the pivot rod 40a, and the force received at this location can cause the developing unit 41 to turn the axis of rotation 46b in the in 4 H direction shown.

After the force application element 61 from the in 4 the state shown in 3 The state shown has been rotated, the force application element 61 is no longer in contact with the pivot rod 40a. The developing unit 41 approaches the photosensitive unit 31 under the action of the spring member 95 and presses against the cam portion 60a such that the cam 60a moves counter to the G direction 4 in the in 3 shown state rotates. The third gear element 60 causes a movement of the first gear element 40 via the second gear element 50 in order to move the pivot rod 40a into the in 3 to return the condition shown.

In order to rotate the force applying member 61 from the state of 4 into the state of 3 a return of the control unit from the in 4 in the condition shown in 3 To effect the state shown, the present exemplary embodiment can also provide a torsion spring on the first gear element 40, the second gear element 50 or the third gear element 60, which applies an elastic restoring force to the first gear element 40, the second gear element 50 or the third gear element 60 can, to the first gear element 40, the second gear element 50 or the third gear element 60 from the state of 4 into the state of 3 to bring back.

Third embodiment

The same structure, connection relationship and operation of the present embodiment as those of the first embodiment are not repeated here.

How 5 1, the image forming apparatus is provided with a second force applying member A60, a door cover 12, a support member 13 and a bottom portion 11. The force application element 60 is designed to be hook-shaped (eg L-shaped). The door cover 12 is connected to the support element 13 via a joint and is rotatable about a rotation axis 12a located on the image forming device. The processing cartridge is supported by the support member 13 in its attached state to the image forming apparatus. The bottom section 11 is located below the image forming device and also below the support element 13. As in 5 As shown, the control unit includes a first connecting rod 70, a first gear 70a, a second connecting rod 80 and a second gear 80a, the first connecting rod 70, the first gear 70a, the second connecting rod 80 and the second gear 80a all on the development unit 41 are arranged and are located on one side of the developing element 42 in the axial direction of the processing cartridge. The first connecting rod 70 and the second connecting rod 80 are each provided with a rack, the rack on the first connecting rod 70 with the first gear 70a, the rack on the second connecting rod 80 with the second gear 80a and the first gear 70a with the second Gear 80a is engaged, with the second gear 80a having a larger diameter than the first gear 70a. When the processing cartridge is attached to the image forming apparatus, the second connecting rod 80 is located below the first connecting rod 70 and protrudes at least partially from the developing unit 41.

As in 5 As can be seen, the processing cartridge, when attached to the image forming apparatus, is supported by the support member 13, with the second connecting rod 80 extending downwardly through the support member 13 extends, but does not rest on the bottom section 11 and therefore does not receive any pressure from the bottom section 11. The first connecting rod 70 does not rest on the second force application element A60 and therefore does not receive any force from the second force application element A60 (there are no overlapping sections in the horizontal direction). At this time, the developing member 42 and the photosensitive member 32 are in contact with each other under the action of the spring member 95.

How out 6 As can be seen, the door cover 12, when rotated about the axis of rotation 12a in the direction according to the arrow I shown, causes the support element 13 to move downwards in the J direction shown (in the vertical direction) and at the same time also a movement of the processing cassette into the J direction. During the downward movement of the processing cassette and the support member 13, the second connecting rod 80 abuts the bottom portion 11 and is pushed by the bottom portion 11 in a direction opposite to the J direction shown, thereby sequentially rotating the second gear 80a and the first gear 70a and finally the first connecting rod 70 is moved counter to the J direction shown, which ultimately results in the first connecting rod 70 moving out of the development unit 41. Since the diameter of the second gear 80a is larger than the diameter of the first gear 70a, the first connecting rod 70 is moved counter to the J direction by a greater distance than the second connecting rod 80, so that the first connecting rod 70 is connected to the second force applying element A60 can bump (there are overlapping sections in the horizontal direction) after it has moved out of the developing unit 41.

As in 7 As shown in FIG. Direction, thereby separating the developing member 42 from the photosensitive member 32 (creating the distance L as shown).

When the second force application element A60 on the image forming device is opposite to the K direction 7 is moved, the second force application element A60 no longer exerts any force on the first connecting rod 70, with the development unit 41 moving in one of the M direction under the action of the spring element 95 7 rotates in the opposite direction so that the developing element 42 comes into contact with the photosensitive element 32.

If the door cover 12 is opened (or in one of the in 6 I-direction shown in the opposite direction), the door cover 12 rotates about its axis of rotation 12a and thereby causes a movement of the support element counter to the in 6 shown J direction, wherein the second connecting rod 80 is separated from the bottom portion 11 and the second connecting rod 80 or the first connecting rod 70 is under the action of a spring (or the first gear 70a or the second gear 80a is under the action of a torsion spring) . The second connecting rod 80 moves in the in 6 J direction shown away from the interior of the developing unit 41, while the first connecting rod 70 is in the in 6 shown J direction moved close to the interior of the developing unit 41 and finally into the state according to 5 returns, whereupon the processing cassette can be removed from the support member 13.

Fourth embodiment

In the present embodiment, the same structure and connection relationship of the processing cartridge as in the second embodiment and the same structure and connection relationship of the image forming apparatus as in the third embodiment are not repeated here.

As in 8th As shown, the second force applying member A60 is located above the developing unit 41 of the processing cartridge when the processing cartridge is mounted on the image forming apparatus. The control unit includes a first gear member 140, a second gear member 150 and a third gear member 160 disposed in the developing unit 41 of the processing cartridge. The first gear member 140, the second gear member 150, and the third gear member 160 are each provided with a gear. The first gear member 140 is provided with a pivot rod 140a with which the rotation of the first gear member 140 can be controlled. The gear on the second gear member 150 meshes with the gear on the first gear member 140 and transmits a force. The gear on the third gear member 160 meshes with the gear on the second gear member 150 and transmits a force. The third gear member 160 is provided with a cam portion 160a rotatable with the third gear member 160.

Out of 8th It appears that the pivot rod 140a is horizontal after attaching the processing cartridge to the image forming apparatus Direction partially coincides with the second force applying member A60, with the developing member 42 in contact with the photosensitive member 32. When the second force application element A60 is inserted into the in 9 N direction shown, the second force applying member A60 abuts the pivot rod 140 and causes the pivot rod 140 to move the first gear member 140 about its axis in the FIG 9 shown P direction, whereupon the second gear member 150 and the third gear member 160 rotate sequentially, so that the cam portion 160a through the third gear member 160 in the direction indicated by the arrow P in 9 direction shown. At this time, the cam portion 160a does not abut the photosensitive unit 31, so that the developing member 42 still remains in contact with the photosensitive member 32.

After the pivot rod 140a bypasses the hook-shaped portion of the second force applying member A60, the second force applying member A60 does not exert any force on the pivot rod 140a, and the first gear member 140 rotates under the action of a spring member (e.g., a torsion spring wound around the first gear member, which is in is not shown in the drawings) in the Q direction to that in 10 position shown, wherein the second gear element 150 and the third gear element 160 are also rotated one after the other by the spring element. At this time, the cam portion 160a does not abut the photosensitive unit 31 and the developing member 42 remains in contact with the photosensitive member 32.

When the second force application element A60 is in the position provided by the in 11 In the direction indicated by arrow R shown, the second force application member A60 initiates rotation of the pivot rod 140a in the illustrated Q direction, and the second gear member 150 and the third gear member 160 are respectively rotated, with the third gear member rotating in the illustrated Q direction , so that the cam portion 160a presses against the photosensitive member 31 so that the developing unit 41 rotates about the rotation axis 46b with the developing member 42 not in contact with (ie, separated from) the photosensitive member 32. When the second force applying member A60 is further moved in the R direction, the pivot rod 140a separates from the second force applying member A60, thereby causing the developing unit 41 to move into the in 8th returns to the state shown. At this time, the processing cartridge can be removed from the image forming apparatus.

In the present embodiment, the pivot rod 140a may also be provided with a spring element, wherein the pivot rod 140a, when separated from the second force applying element A60, is also affected by the action of the spring element (e.g. a torsion spring wound around the first gear element, which is not shown in the drawings is shown) in the in 8th can be returned in the condition shown.

The axes of rotation of the first gear member 140, the second gear member 150 and the third gear member 160 are all parallel to the axial direction of the developing member 42.

Fifth embodiment

In the present embodiment, the same structure and connection relationship of the processing cartridge as in the first embodiment and the same structure and connection relationship of the image forming apparatus as in the fourth embodiment will not be described repeatedly here.

How 12 shows, the developing unit 42 of the processing cassette is provided with a push rod 110 and a push rod 120. The push rod 110 is provided with a rotation axis 110a and the push rod 120 with a rotation axis 120a, the push rod 110 and the push rod 120 being connected to one another via a joint 110b. Both the push rod 110 and the push rod 120 are arranged on the developing unit 41. The push rod 120 is connected at one end to the push rod 110 and protrudes toward the photosensitive unit 31 at the other end. The push rod 110 protrudes from the development unit 41.

If the second force application element A60 in the in 13 S direction shown is moved, the second force application element A60 abuts the push rod 110 and causes the push rod 110 to move about the axis of rotation 110a in the FIG 13 shown in the T direction, rotating the push rod 120 so that the other end 120b of the push rod 120 moves in a direction away from the photosensitive unit 31.

The second force application element A60 rests with the inside of its hook-shaped section on the push rod 110, the second force application element A60 when it is in the in 14 shown in the X direction Push rod 110 in the in 14 shown Y direction, whereby the push rod 120 is rotated so that the other end 120b of the push rod presses against the photosensitive unit 31 to rotate the developing unit 41 about the rotation axis 46b so that the developing member 42 moves away from the photosensitive member 32 moved away.

After the separation of the second force application element A60 from the push rod 110, the push rod 110 returns to the state according to the action of a spring element (eg a spring or torsion spring). 12 back. It can also be caused by the action of the spring element 95 in the in 12 the state shown can be returned.

Sixth embodiment

In the present embodiment, the same structure and connection relationship of the processing cartridge as in the fourth embodiment and the same structure and connection relationship of the image forming apparatus as in the fourth embodiment will not be described repeatedly here.

How out 15 results, the developing unit 41 of the processing cassette is provided with a first press rod 240, a second gear member 250 and a third gear member 260. The first press rod 240 is provided with a rack portion 240a which is engaged with the second gear member 250, while the second gear member 250 is engaged with the third gear member 260. The third gear member 260 is provided with a cam portion 260a. The first press rod 240 protrudes from the developing unit 41 and is provided with an inclined surface.

When mounting the processing cartridge on the image forming apparatus, the inclined surface of the first press rod 240 abuts the second force applying member A60 on the image forming apparatus, and the second force applying member A60 causes the first press rod 240 to move in the a-direction shown (i.e., toward the interior of the developing unit 41 ) emotional. Since the rack portion 240a of the first press rod 240 engages with the second gear member 250 and the second gear member 250 in turn engages with the third gear member 260, the movement of the first press rod 240 in the a-direction is converted into one by the second gear member 250 and the third gear member 260 Rotation of the third gear member 260 in the illustrated b direction is converted, by which the cam portion 260a on the third gear member 260 is brought into engagement with the photosensitive unit 31 and thereby the developing unit 41 is rotated about the rotation axis 46b so that the developing unit 41 moves away from of the photosensitive unit 31 moves so that the developing member 42 is not in contact with the photosensitive member 32.

When the inclined surface of the first press rod 240 on the processing cassette is no longer engaged with the second force applying member A60, the developing unit 42 is brought close to the photosensitive unit 31 by the spring force of the spring member 95, whereby the photosensitive unit 31 abuts the cam portion 260a and through the third gear element 260, the second gear section 250 and the rack section 240a a return of the first press rod 240 to the in 15 shown state (ie the first press rod 240 is moved in the direction in which it protrudes from the developing unit 41).

In order to enable the first press rod 240 to protrude better from the development unit 41, the first press rod 240 in the present exemplary embodiment can additionally be provided with a spring element which applies an elastic restoring force to the first press rod 240, so that the first press rod 240 is always elastic Is exposed to restoring force and protrudes from the development unit 41.

Seventh embodiment

In the present embodiment, the same structure and connection relationship of the processing cartridge as in the fifth embodiment and the same structure and connection relationship of the image forming apparatus as in the fifth embodiment will not be described repeatedly here.

Out of 16 It can be seen that the developing unit 41 of the processing cartridge is provided with a first press rod 240 and a second push rod 210. The first press rod 240 can move on the developing unit 41 in the illustrated a-direction and is provided with an inclined surface. The second push rod 210 rotates about a rotation axis 210a arranged on the developing unit in the c direction shown.

When mounting the processing cartridge on the image forming apparatus, the inclined surface of the first press rod 240 abuts the second force applying member A60 on the image forming apparatus such that the first press rod 240 moves in the illustrated a-direction toward the interior of the developing unit 41. This results in the first press rod 240 being attached to the second ram rod 210 abuts so that the second push rod 210 rotates about the axis of rotation 210a in the c direction shown and thus comes into contact with the light-sensitive unit 31. The abutment of the second push rod 210 on the photosensitive unit 31 causes the developing unit 41 to rotate about the rotation axis 46b and thereby move away from the photosensitive unit 31.

When the first press rod 240 no longer rests against the second force application element A60, the developing unit 41 is moved towards the photosensitive unit 31 by the action of the spring element 95, whereby the second push rod 210 is rotated about the axis of rotation 210a in a direction opposite to the c direction shown and thereby triggers a movement of the first press rod 240 counter to the a-direction shown or in a direction away from the development unit 41.

In order to enable the first press rod 240 to protrude better from the development unit 41, the first press rod 240 in the present exemplary embodiment can additionally be provided with a spring element which applies an elastic restoring force to the first press rod 240, so that the first press rod 240 is always elastic Is exposed to restoring force and protrudes from the development unit 41.

Eighth embodiment

In 17-27 Illustrated is another embodiment of the present invention in which the structure of the processing cartridge and the image forming apparatus is different from the above embodiments.

The patent US9836020B2 describes an image forming device that, as in 17 shown, is provided with a spacer element 71 and a spring 73. The spacer 71 rotates about a support shaft 74 and the spring exerts an elastic restoring force on the spacer 71 so that the spacer 71 always remains extended upwards, as shown in FIG 17 can be recognized. The operation of the image forming device is in the patent US9836020B2 described. The processing cartridge includes a developing unit 41 and a photosensitive unit 31. The photosensitive unit 31 is provided with a photosensitive member 32. The developing unit 41 is provided with a developing member 42 and a projection 44d. When the projection 44d engages the spacer 71 and the spacer 71 causes the projection to rotate the developing unit 41 about the rotation axis 46b located on the developing unit 41, the developing member 42 moves away from the photosensitive member 32. When the spacer 71 is not engaged with the projection 44d, the developing unit 41 is rotated about the rotation axis 46b by the action of the spring member 95 so that the developing member 42 moves close to and comes into contact with the photosensitive member 32.

• Erste Variante des vorliegenden Ausführungsbeispiels

As in 17 As shown, the projection 44d, when constructed as shown, exerts a force F1 on the spacer 71, which consists of two components F1x and F1y, the component F1y causing the spacer 71 to tend to move in the display of 17 to move downward, so that there is a risk that the spacer element 71 and the projection will come out of engagement. The structural design of the processing cartridge and projection in the present embodiment aims to address this risk. The specific variants of the present embodiment are as follows:

• First variant of the present exemplary embodiment

The first variant of the present exemplary embodiment is in 18a to 21b shown.

How 18a and 18b show, the processing cassette is provided with a projection 44d and a force receiving element 45, wherein the projection 44d is further provided with a blocking element 44b and a sliding groove 44c and the force receiving element 45 is provided with an inclined surface 45a, a rotation axis 45b and a force receiving surface 45c.

The rotation axis 45b of the force receiving element 45 is connected to the sliding groove 44c so that the rotation axis 45b can move up and down in the sliding groove 44c. As shown, the force receiving member 45 is rotatable about the rotation axis 45b, with the center of gravity of the force receiving member 45 located away from the rotation axis 45b and close to the blocking member 44b (with a tendency to rotate clockwise), so that the blocking member 44b contacts the force receiving surface 45c (to prevent the force receiving member 45 from rotating clockwise) and ensure that the force receiving surface 45c is in an upright state during mounting of the processing cartridge on the image forming apparatus. The inclined surface 45a on the force absorbing element 45 is arranged at the bottom in the vertical direction. The force receiving surface 45c can come into engagement with the spacer element 71 and absorb a pressure exerted by the spacer element 71.

After the processing cassette is in the area indicated by the arrow in 18a indicated direction was installed in the image forming apparatus, the force receiving member 45 is mounted on the right side of the spacer member 71, with the inclined surface 45a not touching the spacer member 71. The force receiving element 45 is exposed to the action of the blocking element 44b, so that the force receiving surface 45c is in an upright position.

If the spacer element 71 is in the in 19a and 19b arrow direction shown, the spacer element 71 abuts the inclined surface 45a and causes the force absorbing element 45 to rotate about the axis of rotation 45b and the axis of rotation 45b to slide upward along the sliding groove 44c while the blocking element 44b is separated from the force absorbing surface 45c. Although the spacer element 71 is exposed to the force of gravity of the force receiving element 45, the force receiving element 45 cannot overcome the spring force of the spring 73 due to its limited weight, so that the spacer element 71 does not rotate downward.

If the spacer element 71 is in the in 20a and 20b shown state, the spacer element 71 is located on the right side of the force receiving element 45, the force receiving element returning under gravity to the illustrated state in which the force receiving surface 45c is in the upright state, the rotation axis 45b at the lower end in the sliding groove 44c lies and the force absorbing element 45 returns to the initial state.

If the spacer element 71 is the force absorbing element 45 according to the in 21a and 21b arrow shown and comes into engagement with the force receiving surface 45c, the spacer element 71 exerts pressure on the force receiving element 45, so that the force receiving element 45 moves to the left. Since the axis of rotation 45b is located lower in the vertical direction than the top of the spacer element 71, the pressure exerted by the spacer element 71 on the force receiving element 45 does not cause the force receiving element 45 to rotate counterclockwise about the axis of rotation 45b in the direction shown. As a result, the rotation axis 45b of the force receiving member 45 presses the sliding groove 44c such that the projection 44d moves leftward (the rotation axis 45b rotates relative to the sliding groove 44c), with the developing unit 41 rotating clockwise about the rotation axis 46b, thereby causing the developing member 42 is moved away from the photosensitive member 32, that is, the developing member 42 is rotated from a state in contact with the photosensitive member 32 to a state not in contact with the photosensitive member 32. Since the force receiving member 45 is rotatable about the rotation axis 45b, the force receiving surface 45c remains in an upright position during the process in which the spacer 71 presses on the force receiving member 45, wherein the force receiving member 45 does not exert any force in the vertical direction on the spacer 71.

In this way, the first variant of the present exemplary embodiment overcomes the disadvantages of the prior art in that not only is the processing cassette constructed simply, but also there is no pressure applied to the spacer element on the image forming device, which causes the spacer element to move downwards, and in that the force-receiving surface of the force absorbing element always remains in the upright state while absorbing a pressure exerted by the spacer element.

Second variant of the present exemplary embodiment

The second variant of the present exemplary embodiment is in 22a to 25b shown.

How 22a and 22b show, the projection 144d is provided with a blocking element 144b and a sliding groove 144c. The force absorbing element 145 is provided with a bottom 145a, a rotation axis 145b and a force absorbing surface 145c. The underside 145a is formed at the bottom of the force absorbing element 145. The rotation axis 145b is connected to the sliding groove 144c (in the present variant, the rotation axis 145b can be set up so that it can slide in the sliding groove 144c, or it can also be set up so that it cannot slide in the sliding groove 144c). The force receiving element 145 is rotatable about the axis of rotation 145b. The force receiving surface 145c is formed on one side of the force receiving element 145. When the processing cartridge is in the illustrated state, the force receiving surface 145c is in an upright position while the rotation axis 145 is located in the left end portion of the force receiving member 145, so that the force receiving member 145 has a tendency to rotate clockwise with the blocking member 144b on the force absorbing element 145 rests and prevents the force absorbing element 145 from rotating clockwise.

If the processing cartridge is in the direction according to the in 22a and 22b Arrow shown is installed in the image forming device so that the bottom 145a does not rest on the spacer 171, the force receiving surface 145c is not exposed to any force from outside the processing cassette sets so that the force receiving surface 145 is in the upright state.

How out 23a results, the axis of rotation 145b is set up so that it cannot slide in the sliding groove 144c. When the processing cartridge continues to move downward in the arrow direction shown to a final state in which it cannot move further downward, the spacer 171 abuts the bottom 145a and the force receiving member 145 rotates about the rotation axis 145b to the illustrated state . Since the force receiving element 145 has a low weight, the force exerted by the force receiving element 145 on the spacer element 171 is less than the spring force of the spring 173, so that the spacer element 171 is not pressed downward.

From the illustration in 23b It can be seen that the rotation axis 145b is set up so that it can slide in the sliding groove 144c. When the processing cassette continues to move downward in the arrow direction shown until a final state in which it cannot move further downward, the spacer 171 abuts the bottom 145a, so that the force receiving member 145 moves under the action of the spacer 171 moved up, with the force receiving surface 145c remaining in the upright state. Since the force receiving element 145 has a low weight, the force exerted by the force receiving element 145 on the spacer element 171 is less than the spring force of the spring 173, so that the spacer element 171 is not pressed downward.

As in 24a and 24b As shown, when the spacer 171 is moved to the right according to the arrow shown to the shown state, the force receiving element 145 returns to the shown state with the force receiving surface 145c in an upright position.

Since the top of the spacer element 71 is located higher in the vertical direction than the axis of rotation 145b, as shown in FIG 25a and 25b can be seen, the spacer element 171, when it moves to the left in the arrow direction shown and abuts the force-receiving surface 145c, exerts pressure on the force-receiving element 145, so that the axis of rotation 145b on the force-receiving element 145 presses on the sliding groove 144c and moves relative to the Sliding groove 144c rotates. At this time, the developing unit 41 is rotated clockwise about the rotation axis 46b so that the developing member 42 moves away from the photosensitive member 32 and rotates from a state in which it touches the photosensitive member 32 to a state in which it does not touch the photosensitive member 32 photosensitive element 32 is in contact. Since the force receiving element 145 is rotatable about the rotation axis 145b, the force receiving surface 145c remains in an upright position during the process in which the spacer 171 applies pressure to the force receiving element 145, wherein the force receiving element 45 does not exert any force in the vertical direction on the spacer 71 .

Third variant of the present exemplary embodiment

Structures from the present variant, which are identical to those of the first and second variants described above, are not repeated here.

How 26 and 27 show, the spacer element 271 is further provided with a bump 271a and the force receiving element 245 is further provided with a bump 245d, the bump 271a extending from the spacer element 271 substantially the same distance as the bump 245d extends from the force receiving element 245. When the spacer element 271 rests on the force-receiving surface 245c, the bump 271a on the spacer element abuts a plane on the force-receiving surface 245c and the bump 245d on the force-receiving element 245 abuts a plane on the spacer element 271, so that the force-receiving surface 245c always remains in an upright position the spacer element 271 exerts pressure on the force-receiving surface 245c.

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 9836020 B2 [0066]

Claims (8)

Processing cassette having a developing unit and a photosensitive unit, the processing cassette being removably installed in an image forming apparatus, within which a vertically retractable and extending spacer member is provided, the processing cassette further comprising a force receiving member disposed below the developing unit, characterized that the force-absorbing element is provided with an axis of rotation about which the force-absorbing element is rotatable. Processing cassette Claim 1 , characterized in that the processing cartridge is further provided with a projection provided with a sliding groove. Processing cassette Claim 2 , characterized in that the sliding groove is connected to the axis of rotation in such a way that the axis of rotation can move in the sliding groove. Processing cassette Claim 1 , characterized in that the force receiving element has a first position and a second position, wherein the force receiving element is closer to the underside of the processing cassette in the second position than in the first position. Processing cassette Claim 2 , characterized in that the projection is further provided with a blocking element. Processing cassette Claim 5 , characterized in that the blocking element rests on the force absorbing element in order to prevent clockwise rotation of the force absorbing element. Processing cassette according to the Claims 1 - 6 , characterized in that the force-receiving element has a force-receiving surface which, when the force-receiving element is in the second position, bears against the spacer element of the image forming device in order to receive a pressure exerted by the spacer element in order to effect a relative movement of the developing unit and the photosensitive unit. Processing cassette Claim 7 , characterized in that the force-receiving surface is in an upright position when the force-receiving element is in the second position.

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