WO2024093949A1 - 一种处理盒 - Google Patents

一种处理盒 Download PDF

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Publication number
WO2024093949A1
WO2024093949A1 PCT/CN2023/127958 CN2023127958W WO2024093949A1 WO 2024093949 A1 WO2024093949 A1 WO 2024093949A1 CN 2023127958 W CN2023127958 W CN 2023127958W WO 2024093949 A1 WO2024093949 A1 WO 2024093949A1
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WO
WIPO (PCT)
Prior art keywords
developing roller
electrically connected
power supply
photosensitive drum
connecting member
Prior art date
Application number
PCT/CN2023/127958
Other languages
English (en)
French (fr)
Inventor
朱雨
Original Assignee
朱雨
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 朱雨 filed Critical 朱雨
Publication of WO2024093949A1 publication Critical patent/WO2024093949A1/zh

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Classifications

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

Definitions

  • the invention relates to the technical field of electronic photographic imaging, in particular to a processing box.
  • an imaging device such as a laser printer, a copier, a fax machine, etc. that uses electronic photography to form an image
  • a device usually includes at least an electrode assembly and a developer transfer assembly, wherein the electrode assembly includes at least one charging electrode, a developing electrode, and at least one grounding terminal, and some devices also have a supply electrode, wherein the transfer assembly includes a developer transport component such as a transfer roller and a transfer belt.
  • the device also includes a processing box that can be removed from the imaging device.
  • Existing processing boxes mainly include: an integrated processing box that integrates a photosensitive drum unit and a developing unit, and a split processing box that only includes a photosensitive drum unit or a developing unit.
  • the photosensitive drum unit and the developing unit are usually connected to each other in a rotatable manner.
  • the photosensitive drum unit includes a photosensitive unit frame, a photosensitive drum rotatably supported by the photosensitive unit frame, a charging roller, etc.
  • the developing unit includes a developing unit frame, a developing roller rotatably supported by the developing unit frame, a powder bin, etc.
  • the photosensitive drum and the developing roller are in contact with each other.
  • the imaging device adopts a developing method in which the developing roller is placed in contact with the photosensitive drum to develop the latent image on the photosensitive drum, the developing roller remains pressed against the peripheral surface of the photosensitive drum.
  • a force receiving mechanism is arranged on the processing box. During the imaging operation, the developing roller and the photosensitive drum are in contact. During the cleaning operation, the force receiving mechanism receives the force of the imaging device and separates the developing roller and the photosensitive drum.
  • this force receiving mechanism is relatively complex.
  • a processing box which can be detachably installed in an imaging device, and the processing box includes: a developing unit and a photosensitive unit, the photosensitive unit includes a photosensitive unit frame and a photosensitive drum, and the developing unit includes a developing unit frame and a developing roller; a first force receiving component, located at the first end of the processing box in the length direction, for receiving the force from the first force applying part; a box side developing electrode, located at the second end of the processing box in the length direction; the processing box also includes a switch device, located at the first end of the processing box, the switch device includes a second force receiving component, a first electrical connection component and a second electrical connection component, the second force receiving component includes a second force receiving component and a first elastic member, the first electrical connection component is connected to the second force receiving component and the developing roller; the second electrical connection component is connected to the box side developing electrode; the second force receiving component can be moved between the first position and the second position and between the second position and the third position relative to the developing unit frame.
  • the second force receiving component When the processing box is loaded into the imaging device, the second force receiving component is located at the second position during the imaging operation, and the first electrical connection component is in electrical contact with the second electrical connection component, and the second force receiving component is located at the third position during the non-imaging operation, and the first electrical connection component is not in contact with the second electrical connection component.
  • the developing roller and the photosensitive drum are in contact with each other, and the developing roller is charged.
  • the developing roller and the photosensitive drum do not need to be separated, and the two are still in contact, but the power supply to the developing roller is disconnected.
  • the developing roller will receive electricity from the photosensitive drum, the direction of the electric field between the developing roller and the photosensitive drum has not changed, and the potential difference between the two is not large (or there is no potential difference), and the toner on the developing roller may be affected by the shear force or instantaneous electric field force on the surface of the photosensitive drum and transferred to the surface of the photosensitive drum, so that the toner on the surface of the photosensitive drum cannot be cleaned, which will further contaminate the transfer belt, transfer roller, and photosensitive drum, causing printing defects.
  • the present invention provides a processing box adopting the following solution to solve the technical problem that during non-imaging operation, a photosensitive drum and a developing roller are not separated, and carbon powder on the developing roller is transferred to the photosensitive drum, resulting in printing defects.
  • a processing box can be detachably installed in the main component of an electronic photographic imaging device provided with an electric component, the processing box includes a photosensitive drum, a developing roller and a charging component for charging the photosensitive drum; the processing box also includes: a power supply member capable of contacting the power component to receive power, the power supply member capable of supplying power to the developing roller; a grounding member capable of switching between a state electrically connected to the developing roller and a state not electrically connected to the developing roller, when the developing roller is not electrically connected to the grounding member, the developing roller has a first voltage value; when the developing roller is electrically connected to the grounding member, the developing roller has a second voltage value; the absolute value of the first voltage value is greater than the absolute value of the second voltage value.
  • the processing box also includes a connecting member, which can be electrically connected to the developing roller, and the connecting member can be electrically connected to the power supply member or can be switched between an electrically connected state and an electrically non-connected state with the power supply member; the connecting member can be switched between a state of being electrically connected to the grounding member and a state of being electrically non-connected.
  • a connecting member which can be electrically connected to the developing roller, and the connecting member can be electrically connected to the power supply member or can be switched between an electrically connected state and an electrically non-connected state with the power supply member; the connecting member can be switched between a state of being electrically connected to the grounding member and a state of being electrically non-connected.
  • At least a portion of the connector is movable between a first position electrically connected to the power supply member and a second position electrically connected to the grounding member.
  • the developing roller includes a developing roller shaft and a first main body supported on the developing roller shaft;
  • the connecting member has a first connecting end and a second connecting end, the first connecting end is electrically connected to the developing roller shaft, and the second connecting end is capable of moving between a first position in contact with the power supply member and a second position in contact with the grounding member; when the second connecting end is in the first position, the developing roller has a first voltage value, and when the second connecting end is in the second position, the developing roller has a second voltage value, and the absolute value of the first voltage value is greater than the absolute value of the second voltage value.
  • the present invention also provides a processing box, which can be detachably installed in the main component of an electronic photographic imaging device provided with an electric component, the processing box includes a photosensitive drum, a developing roller and a charging component for charging the photosensitive drum; the processing box also includes: a power supply member, which can contact with the power component to receive power; a connecting member, which can be electrically connected to the developing roller, The connecting member can be electrically connected to the power supply member or can be switched between an electrically connected state and a non-electrically connected state with the power supply member; the grounding member, at least a portion of the connecting member can be switched between an electrically connected state and a non-electrically connected state with the grounding member.
  • the box body structure is simpler, and the technical problem of printing defects caused by the toner on the developing roller being transferred to the photosensitive drum during the cleaning operation is solved.
  • At least a portion of the connector is movable between a first position electrically connected to the power supply member and a second position electrically connected to the grounding member.
  • the connecting member when in the first position, the connecting member is electrically connected to the power supply member; and when in the second position, the connecting member is electrically connected to the power supply member and the grounding member at the same time.
  • the connecting member also includes a force receiving end, which can move between a protruding position and a retracted position.
  • the force receiving end can receive the force of the force-applying component of the imaging device so that at least a portion of the connecting member moves between the first position and the second position.
  • the processing box further comprises an elastic member, and the elastic member is used to keep the force receiving end in the retracted position.
  • At least a portion of the grounding member and/or the power supply member is movable between a position electrically connected to the connection member and a position not electrically connected to the connection member.
  • the process cartridge further comprises a retaining mechanism, which is capable of enabling the connector to remain electrically connected to the power supply member during an imaging operation and enabling the connector to remain electrically connected to the grounding member during a cleaning operation.
  • a retaining mechanism which is capable of enabling the connector to remain electrically connected to the power supply member during an imaging operation and enabling the connector to remain electrically connected to the grounding member during a cleaning operation.
  • the processing box also includes a first conductive component arranged on the upper side of the processing box, the first conductive component contacts the electronic photographic imaging device and receives power; the charging component is a charging roller, and the charging roller is electrically connected to the first conductive component.
  • FIG. 1 is a schematic diagram of the overall structure of a process cartridge in accordance with Embodiment 1;
  • FIG2 is a schematic diagram of the overall structure of the process cartridge of Embodiment 1 from another angle;
  • FIG. 3 is a schematic structural diagram of a driving end of a process cartridge in accordance with Embodiment 1;
  • Example 4 is a schematic structural diagram of the conductive end of the process cartridge of Example 1;
  • FIG. 5 is a sectional view of a process cartridge of Embodiment 1;
  • Example 6 is a partial structural exploded view of the process cartridge of Example 1;
  • FIG7 is a partial structural exploded view of the photosensitive unit of Example 1;
  • Example 8 is a partial structural exploded view of the developing unit of Example 1;
  • Example 9 is a schematic structural diagram of a developing unit of Example 1.
  • Example 10 is a schematic diagram of the assembly structure of the first cover member, the power supply member, the grounding member and the first conductive component of Example 1;
  • FIG. 11 is a schematic diagram of the assembly structure of the first cover member, the power supply member, the grounding member and the first conductive component of Embodiment 1 when viewed from another angle;
  • Example 12 is a schematic diagram of the exploded structure of the first cover member, the power supply member, the grounding member and the first conductive assembly of Example 1;
  • Example 13 is a partial circuit schematic diagram of Example 1 when the connecting member is electrically connected to the grounding member;
  • Example 14 is a partial circuit schematic diagram of Example 1 when the connecting member is electrically connected to the power supply member;
  • FIG. 15 is a diagram showing the relationship between the force receiving end and the force applying member when the process cartridge of Embodiment 1 is loaded into the imaging device but the door cover is not closed;
  • 16 and 17 are diagrams showing the matching relationship between the connecting member and the force applying member after the process cartridge of Embodiment 1 is loaded into the image forming apparatus and the door cover is closed;
  • Example 18 is a diagram showing the cooperation relationship between the force applying member and the electrical switching assembly when the process cartridge of Example 1 is in an imaging operation;
  • FIG. 19 is a diagram showing the cooperation relationship between the force applying member and the electrical switching assembly when the process cartridge of Example 1 is in a cleaning operation;
  • FIG. 20 is a schematic structural diagram of an electrical switching assembly of a process cartridge of Example 2;
  • 21 is a diagram showing the relationship between the force receiving end and the force applying member after the process cartridge of Embodiment 2 is loaded into the imaging device and the door cover is closed;
  • FIG. 22 is a diagram showing the coordination of the force applying member and the electrical switching assembly when the process cartridge of Embodiment 2 is in an imaging operation and the force applying member is in a fourth position;
  • FIG. 23 is a diagram showing the coordination of the force applying member and the electrical switching assembly when the process cartridge of Embodiment 2 is in an imaging operation and the force applying member is in a third position;
  • FIG. 24 is a diagram showing the relationship between the connector and the power supply member when the process cartridge of Embodiment 2 is in an imaging operation
  • 25 is a diagram showing the coordination of the force applying member and the electrical switching assembly when the process cartridge of Embodiment 2 is in a cleaning operation and the force applying member is in the fifth position;
  • 26 is a diagram showing the coordination of the force applying member and the electrical switching assembly when the process cartridge of Embodiment 2 is in a cleaning operation and the force applying member is in a third position;
  • FIG. 27 is a diagram showing the matching relationship between the connecting member and the grounding member when the process cartridge of Example 2 is in a cleaning operation
  • Example 28 is a partial circuit schematic diagram of Example 3 when the connecting member is electrically connected to the grounding member;
  • Example 29 is a partial circuit schematic diagram of Example 3 when the connecting member is electrically connected to the power supply member;
  • FIG30 is a schematic diagram of the structure of the electrical switching assembly of Example 3.
  • FIG31 is a schematic diagram of the exploded structure of the electrical switching assembly of Example 3.
  • Example 32 is a partial circuit schematic diagram of Example 4 when the connecting member is electrically disconnected from the grounding member;
  • Example 33 is a partial circuit schematic diagram of Example 4 when the connecting member is electrically connected to the grounding member;
  • Example 34 is a partial circuit schematic diagram of Example 5 when the connecting member is not electrically connected to the power supply member;
  • Fig. 35 is a partial circuit schematic diagram of the embodiment 5 when the connecting member is electrically connected to the power supply member;
  • FIG36 is a partial circuit schematic diagram of Example 5 when the connecting member is electrically connected to the grounding member;
  • FIG37 is a partial circuit schematic diagram of Embodiment 6 when the connecting member is not electrically connected to the grounding member;
  • FIG38 is a partial circuit schematic diagram of Example 6 when the connecting member is electrically connected to the grounding component.
  • the processing box 10 includes a photosensitive unit 1 and a developing unit 2.
  • the photosensitive unit 1 includes a photosensitive unit frame 11, a driving end 111, a conductive end 112, a photosensitive drum 12, a charging component 13 and a first driving unit 15.
  • the driving end 111 and the conductive end 112 are respectively arranged at both ends of the photosensitive unit frame 11 in the length direction.
  • the driving end 111 and the conductive end 112 can be regarded as a part of the photosensitive unit frame 11, which can be integrally formed with the photosensitive unit frame 11 or assembled separately.
  • the driving end 111 and the conductive end 112 are respectively configured as a first cover component 111 and a second cover component 112, which cover the ends of the photosensitive unit frame 11 and can support the photosensitive drum 12 and the charging component 13.
  • the photosensitive drum 12 is rotatably supported on the photosensitive unit frame 11, and the charging component is preferably a charging roller 13, which is rotatably supported on the photosensitive unit frame 11; the charging component 13 is configured to contact the photosensitive drum 12 so as to charge the photosensitive drum 12.
  • the first driving unit 15 is provided at one end of the photosensitive drum 12 so as to receive the driving force of the imaging device and drive the photosensitive drum 12 and the charging roller 13 to rotate.
  • the developing unit 2 includes a developing unit frame 21, a developing roller 22, a powder feeding roller 23, and a second driving unit 25.
  • the developing unit frame 21 is connected to the photosensitive unit frame 11.
  • the developing roller 22 is rotatably supported on the developing unit frame 21 and makes the developing roller 22 and the photosensitive drum 12 contact each other so that during the imaging operation, the toner on the developing roller 22 can be transferred to the surface of the photosensitive drum 12;
  • the developing roller 22 includes a developing roller shaft 221 and a first main body 222 supported on the developing roller shaft 221.
  • the powder feeding roller 23 is rotatably supported on the developing unit frame 21 so as to be able to supply toner to the developing roller 22.
  • the second driving unit 25 is provided at one end of the developing unit 2 so as to be able to receive a driving force from the imaging device and supply a driving force to the developing roller 22 and the powder feeding roller 23 so that the developing roller 22 and the powder feeding roller 23 can rotate.
  • the process cartridge 10 further includes a first conductive component 6, which can be electrically connected to the imaging device and receive power from the imaging device, more specifically, the first conductive component 6 is electrically connected to the charging electrode of the imaging device.
  • the first conductive component 6 can also be electrically connected to the charging roller 13 to provide power to the charging roller 13, and the charging roller 13 contacts the photosensitive drum 12 and charges the photosensitive drum 12.
  • the charging roller 13 receives the voltage (such as -900V) from the charging electrode of the imaging device in the gap formed by the contact with the photosensitive drum 12, ionizes the air to generate electrons, and the electrons are distributed to the surface of the photosensitive drum 12, and a voltage (such as -600V) is formed on the surface of the photosensitive drum 12.
  • the voltage such as -900V
  • the device receives a print instruction, and the laser transmitter emits a laser and irradiates it on the surface of the photosensitive drum 12, so that the printing area on the surface of the photosensitive drum 12 is exposed, and causes the voltage of the exposed position to increase, and the potential of the exposed position increases to higher than -300V, preferably about -200V to 200V. -100V; at this time, the developing roller 22 receives the developing voltage of the device (such as -300V). At this time, the voltage of the exposed area of the photosensitive drum 12 (such as -200V) is higher than the voltage on the developing roller 22 (such as -300V).
  • the direction of the electric field points to the developing roller 22, and the negatively charged toner will be transferred from the developing roller 22 to the exposed position on the surface of the photosensitive drum 12, thereby obtaining a printed image.
  • the surface voltage of the photosensitive drum 12 (such as -600V) is lower than the surface voltage of the developing roller 22 (such as -300V), and the direction of the electric field in this area points to the photosensitive drum 12. Therefore, the electric field force received by the negatively charged toner in this area points to the developing roller 22, and the toner on the surface of the developing roller 22 will not be transferred to the surface of the photosensitive drum 12, so that the non-printing area will not be covered with toner.
  • the processing box 10 when the voltage supplied to the developing roller 22 is cut off, but the developing electrode is usually an open source electrode, therefore, since the developing roller 22 is kept in contact with the photosensitive drum 12, the photosensitive drum 12 can transfer electricity to the developing roller 22 through the conductive effect of the carbon powder, so that the developing roller maintains a certain charge.
  • the voltage potential difference between the developing roller 22 and the surface of the photosensitive drum 12 is very small, or sometimes the direction of the electric field will point to the developing roller.
  • the negatively charged carbon powder on the developing roller 22 can be transferred to the surface of the photosensitive drum 12 under the action of the frictional shear force between the photosensitive drum 12 and the developing roller 22 or the reverse electric field force, causing the photosensitive drum 12 to be contaminated by carbon powder, and then causing the carbon powder to adhere to the transfer belt, resulting in the photosensitive drum 12 and/or the transfer belt not being cleaned properly, causing printing defects.
  • this embodiment provides a new technical solution.
  • the processing box 10 of this embodiment also includes an electrical switching assembly 5, which includes a voltage regulating member, a power supply member 52 and a connecting member 53, wherein the voltage regulating member can adjust the voltage supplied to the developing roller 22, which voltage is different from the voltage supplied by the power supply member 52, and the preferred voltage regulating member is a grounding member 51, the connecting member 53 can be electrically connected to the developing roller 22, and at least a portion of the connecting member 53 can move between a first position in contact with the power supply member 52 and a second position in contact with the grounding member 51.
  • an electrical switching assembly 5 which includes a voltage regulating member, a power supply member 52 and a connecting member 53, wherein the voltage regulating member can adjust the voltage supplied to the developing roller 22, which voltage is different from the voltage supplied by the power supply member 52, and the preferred voltage regulating member is a grounding member 51, the connecting member 53 can be electrically connected to the developing roller 22, and at least a portion of the connecting member 53 can move between a first position in contact with the power supply member 52 and
  • connection member 53 is movable between a first position where it is electrically connected to the power supply member 52 and a second position where it is electrically connected to the ground member 51 .
  • the following is an introduction using an imaging device system that supplies negative charge and uses negatively charged toner as an example.
  • the electrical switching assembly 5 is disposed at one conductive end of the process cartridge 10 (the end where the conductive end 112 is located).
  • the power supply member 52 can be electrically connected to the imaging device, more specifically, the power supply member 52 is electrically connected to the developing electrode or supply electrode of the imaging device.
  • the connecting member 53 is in the first position, and the connecting member 53 contacts the power supply member 52, so that the developing roller 22 is charged.
  • the voltage of the developing roller 22 is lower than the voltage of the exposed position on the photosensitive drum 12, and the direction of the electric field formed between the exposed area and the developing roller 22 points to the developing roller 22.
  • the negatively charged toner can be transferred from the developing roller 22 to the exposed position on the photosensitive drum 12 under the action of the electric field force directed to the photosensitive drum 12, thereby forming an electrostatic latent image.
  • the power supply member 52 is arranged on the second cover member 112, and at least a portion is exposed outward from the second cover member 112.
  • the power supply member 52 can contact the power component in the main assembly of the imaging device to receive power.
  • the power supply component 52 can be made of a conductive metal component or a conductive resin, and can be integrally formed with the second cover component 112 or can be separately provided.
  • the grounding member 51 is configured to be grounded, specifically, it is grounded after being electrically connected to the imaging device.
  • the connecting member 53 is in the second position, and the connecting member 53 is connected to the grounding member 51, and the voltage on the developing roller 22 is pulled down to 0.
  • the voltage on the photosensitive drum 12 (such as -600V) is lower than the voltage of the developing roller 22 (such as 0V).
  • the electric field formed between the developing roller 22 and the photosensitive drum 12 points to the photosensitive drum, and the electric field force on the negatively charged toner points to the developing roller 22. Therefore, the negatively charged toner attached to the developing roller 22 cannot be transferred to the photosensitive drum 12 under the action of the electric field force, thereby avoiding the contamination of the photosensitive drum 12.
  • the grounding member 51 is exposed outward from the second cover member 112, and is electrically connected to a grounding component in the main assembly of the imaging device when the process cartridge 10 is installed in the imaging device, so as to achieve grounding.
  • the grounding member 51 includes a first grounding member 511 and a second grounding member 512, one end of the first grounding member 511 passes through the hole of the second cover member 112 and is inserted into the photosensitive drum 12, and the other end is configured to be electrically connected to a grounding component (not shown in the figure) in the main assembly of the imaging device, which can ground the photosensitive drum 12.
  • One end of the second grounding member 512 is electrically connected to the first grounding member 511, and the other end is configured to be electrically connected to or disconnected from the connecting member 53.
  • the first grounding member 511 is a conductive shaft pin inserted into the photosensitive drum 12.
  • the connecting member 53 has a first connecting end 56, a second connecting end 57 and a force receiving end 58, the first connecting end 56 is electrically connected to the developing roller shaft 221, and the second connecting end 57 is movable between a first position in contact with the power supply member 52 and a second position in contact with the grounding member 51.
  • the connecting member 53/the second connecting end 57 is in the first position, the developing roller 22 has a first voltage value, and when the connecting member 53/the second connecting end 57 is in the second position, the developing roller 22 has a second voltage value, and the absolute value of the first voltage value is greater than the absolute value of the second voltage.
  • the connecting member 53 includes a first connecting member 7 and a second connecting member 8.
  • the first connecting member 7 is configured to support the developing roller shaft 221, and the first connecting end 56 is disposed on the first connecting member 7.
  • the first connecting member 7 is mounted on one end of the developing unit frame 21, and the developing roller shaft 221 is rotatably supported on the first connecting member 7, and an electrical connection is formed between the two.
  • the first connecting end 56 is disposed on the first connecting member 7 and contacts the developing roller shaft 221.
  • the first connecting member 7 is made of a conductive material.
  • the first connecting member 7 does not have to be configured as a component supporting the developing roller shaft 221, and it may be other conductive members that can be electrically connected to the developing roller 22, such as a conductive metal sheet or a conductive wire.
  • the first conductive component 6 is electrically connected to the imaging device, and the imaging device applies a voltage of about -800V to -1200V on the first conductive component 6, preferably about -900V.
  • the first conductive component 6 transmits the voltage to the charging member 13, and the charging member 13 is in contact with the photosensitive drum 12, ionizing the air in the gap between them, generating electrons, and distributing them on the surface of the photosensitive drum 12.
  • the surface of the photosensitive drum 12 is attached with a voltage of about -600V.
  • the second connecting member 8 is electrically connected to the first connecting member 7 and can move under the action of an external force.
  • the second connecting end 57 and the force receiving end 58 are arranged on the second connecting member 8, wherein the second connecting end 57 is used to be electrically connected to the grounding member 51 or the power supply member 52.
  • the imaging device When processing and executing the print instruction, the imaging device will emit laser after receiving the print instruction, irradiating certain printing areas on the surface of the photosensitive drum 12. After the printing area of the photosensitive drum 12 is exposed, the voltage will rise to higher than -300V, preferably between about -200V and -100V.
  • the connection terminal 57 is connected to the power supply member 52, and the developing roller 22 is applied with a developing voltage (such as -300V, the absolute value of the voltage is 300V) by the device. At this time, the developing roller 22 has a first voltage. At this time, the voltage on the developing roller 22 is lower than the voltage of the exposed position on the photosensitive drum 12 (such as -200V, the absolute value of the voltage is 200V).
  • the direction of the electric field points to the developing roller, and the electric field force on the negatively charged toner points to the photosensitive drum 12.
  • the toner can be transferred from the developing roller 22 to the exposed area of the photosensitive drum 12, thereby forming a toner image.
  • the voltage remains below -300V for a certain period of time (such as -600V).
  • the direction of the electric field formed between this area and the developing roller 22 points to the photosensitive drum 12, and the electric field force on the negatively charged toner points to the developing roller 22. Therefore, the toner on the developing roller 22 in this area cannot be transferred to the non-exposed area of the photosensitive drum 12.
  • the second connection end 57 is connected to the grounding member 51, and the voltage on the developing roller 22 is pulled down to 0V.
  • the developing roller 22 has a second voltage, and the absolute value of the second voltage is 0V.
  • the developing roller 22 is in contact with the photosensitive drum 12. Even if the photosensitive drum 12 transfers charge to the developing roller 22, its potential remains at 0V due to the grounding of the developing roller 22. Therefore, regardless of whether there is exposure on the surface of the photosensitive drum 12, it can be ensured that the voltage of the photosensitive drum 12 is lower than the voltage of the developing roller 22, and the direction of the electric field always points to the photosensitive drum 12.
  • the negatively charged toner is directed to the developing roller under the electric field force. At this time, the toner will not be transferred from the surface of the developing roller 22 to the surface of the photosensitive drum 12.
  • the force receiving end 58 is used to receive the force from the force applying member 20 of the imaging device so that at least a portion of the connecting member 53 (the second connecting member 8) moves between the first position and the second position.
  • the second connecting member 8 can move between the first position and the second position by receiving the force of the force applying member 20 of the imaging device.
  • the second connecting member 8 is rotatably supported at one end of the processing box 10, and is roughly in the shape of a rod.
  • the force receiving end 58 is arranged at the lower end of the rod, and the second connecting end 57 extends from the upper side of the rod to the side close to the photosensitive unit, and can swing with the swing of the second connecting member 8.
  • the force member 20 applies a force to the second connecting member 8, causing the second connecting member 8 to rotate to a first position (the position shown in Figure 18), and during a non-imaging operation (cleaning period), the force member 20 applies a force to the second connecting member 8, causing the second connecting member 8 to rotate to a second position (the position shown in Figure 19).
  • the force member 20 moves in a direction close to the photosensitive drum 12 and applies a force to the force receiving end 58, and the second connecting member 8 rotates to a position in contact with the power supply member 52.
  • the force member 20 moves in a direction away from the photosensitive drum 12 and applies a force to the force receiving end 58, and the second connecting member 8 rotates to a position in contact with the grounding member 51.
  • the second connecting member 8 may further include a conductive portion and a non-conductive portion, wherein the conductive portion is used to electrically connect the developing roller 22 and the power supply member 52 or the grounding member 51, for example, the force receiving end 58 may be configured as a non-conductive material.
  • the force receiving end 58 is configured to be able to move between a protruding position and a retracted position.
  • the force receiving end 58 In the protruding position (the position of the force receiving end 58 shown in FIG. 17 ), the force receiving end 58 can receive the force of the force-applying member 20.
  • the retracted position In the retracted position (the position of the force receiving end 58 shown in FIG. 15 ), the force receiving end 58 is closer to the inside of the frame than in the protruding position.
  • This structural design can avoid interference with the imaging device when the processing box 10 is installed.
  • the processing box 10 also includes an elastic member 30, which is used to make The force receiving end 58 is kept in the retracted position.
  • one end of the elastic member 30 is connected to the second connecting member 8, and the other end is connected to the developing unit frame 21.
  • the second connecting member 8 When the second connecting member 8 is pressed by the pressing mechanism on the imaging device, the second connecting member 8 overcomes the force of the elastic member 30 and moves downward, and the force receiving end 58 moves from the retracted position to the protruding position.
  • the force receiving end 58 can also be configured as a component that moves relative to the developing unit frame 21, such as a rocker arm or a free gravity block structure.
  • This structure can move when it touches an obstacle, thereby avoiding interference from the obstacle. It can not only allow the processing box 10 to be smoothly installed in the device, but also meet the function of receiving the device force-applying component 20, so that at least a part of the connecting member (the second connecting member 8) can move between the first position and the second position.
  • This structural scheme has a simpler structure.
  • the pressing member 40 of the image forming apparatus is located at the upper side of the process cartridge 10, the second connecting member 8 is not pressed by the pressing member 40, and the force receiving end 58 is in the retracted position.
  • the second connecting member 8 is in the initial position where it is not connected to the power supply member 52 and the grounding member 51.
  • the pressing member 40 moves downward and presses the second connecting member 8
  • the second connecting member 8 overcomes the force of the elastic member 30 and moves downward, and the force receiving end 58 moves from the retracted position to the protruding position, in which the force receiving end 58 can receive the force of the force applying member 20.
  • the second connecting member 8 is in an initial position that is not electrically connected to the power supply member 52 and the grounding member 51.
  • the first conductive component 6 contacts the imaging device and receives power, and the charging roller 13 receives power and charges the photosensitive drum 12.
  • the force-applying member 20 moves toward the direction close to the photosensitive drum 12 and pushes the force receiving end 58, and the second connecting member 8 rotates to the first position.
  • the second connecting member 8 is electrically connected to the power supply member 52.
  • the developing roller 22 can receive the power of the developing electrode of the device (such as a voltage of -300V).
  • the voltage at the exposed position on its surface (such as -200V) is higher than the voltage of the developing roller 22.
  • the direction of the electric field between the photosensitive drum 12 and the developing roller 22 points to the developing roller 22.
  • the negatively charged toner on the developing roller 22 is affected by the electric field force direction pointing to the photosensitive drum 12. Therefore, the negatively charged toner on the surface of the developing roller 22 can be transferred to the exposed position on the surface of the photosensitive drum 12.
  • the force member 20 moves away from the photosensitive drum 12 and pushes the force receiving end 58, and the second connecting member 8 rotates to the second position.
  • the second connecting member 8 is connected to the grounding member 51, and the developing roller 22 is grounded, and the voltage is 0V.
  • the developing roller 22 is in contact with the surface of the photosensitive drum 12, part of the charge on the surface of the photosensitive drum 12 is conducted to the developing roller through the carbon powder on the surface of the developing roller 22. Due to grounding, the charge is conducted away.
  • the voltage value of the developing roller 22 is higher than the voltage value on the photosensitive drum 12 (for example, -600V), so the negatively charged carbon powder on the developing roller 22 cannot be transferred to the surface of the photosensitive drum 12, thereby avoiding unnecessary carbon powder attached to the photosensitive drum 12 and avoiding contamination of the transfer belt.
  • the voltage value of the developing roller 22 is higher than the voltage value on the photosensitive drum 12 (for example, -600V), so the negatively charged carbon powder on the developing roller 22 cannot be transferred to the surface of the photosensitive drum 12, thereby avoiding unnecessary carbon powder attached to the photosensitive drum 12 and avoiding contamination of the transfer belt.
  • the second connecting member 8 has a third position which is not electrically connected to the grounding member 51 and the power supply member 52. That is, the second connecting member 8 passes through the third position during the process of moving between the first position and the second position, but in some cases the time spent in the third position is relatively short.
  • the second connecting member 8 when the process cartridge is not installed in the image forming apparatus, the second connecting member 8 is in any one of the first position, the second position or the third position.
  • the time during which the second connection end 57 is electrically connected to the grounding member 51 is longer than the time during which the second connection end 57 is electrically connected to the power supply member 52 .
  • the initial position of the second connecting member 8 may be the first position or the second position.
  • the electrical switching assembly may be disposed on the driving end side of the process cartridge 10 .
  • the process cartridge 10 further includes a voltage stabilizer that can stabilize the voltage supplied to the developing roller 22 .
  • the grounding member 51 does not have to be configured to be grounded, but is connected to a voltage reducing unit or a voltage increasing unit so that the voltage value on the developing roller 22 remains higher than the voltage on the surface of the photosensitive drum 12; in other words, the grounding member, the voltage reducing unit or the voltage increasing unit constitute a voltage regulating member.
  • the voltage regulating component does not make the developing roller voltage 0. As long as the developing roller voltage is higher than the photosensitive drum voltage, the direction of the electric field is from the developing roller to the photosensitive drum, and the force on the toner is directed to the developing roller.
  • the voltage regulating component does not make the developing roller voltage zero, as long as the voltage supplied to the developing roller by the voltage regulating component can weaken the potential difference between the developing roller and the photosensitive drum, and the direction of the electric field is from the photosensitive drum to the developing roller, the force applied to the toner is not sufficient to move the toner from the developing roller to the photosensitive drum.
  • the electrical switching component can also be configured to control whether the photosensitive drum 12 is grounded to achieve a potential difference between the developing roller 22 and the photosensitive drum 12, as long as the charged toner cannot satisfy the electric field force to transfer from the surface of the developing roller 22 to the photosensitive drum 12. More specifically, the electric field force to which the charged toner particles are subjected can overcome the frictional shear force between the developing roller 22 and the photosensitive drum 12, or the superposition of the electric field force to which the charged toner particles are subjected and the frictional shear force between the developing roller 22 and the photosensitive drum 12 cannot overcome the attraction (adhesion) between the charged toner particles and the developing roller, so that the toner cannot be transferred from the surface of the developing roller 22 to the surface of the photosensitive drum 12.
  • first connecting member 7 and the second connecting member 8 may be integrally formed.
  • the voltage regulating component, the power supply component 52 and the connector 53 are not entirely made of conductive materials, for example, they have conductive parts and non-conductive parts, the conductive parts are used for conducting electricity, and the non-conductive parts are used for supporting or installing the conductive parts.
  • This embodiment is introduced by taking negatively charged toner as an example.
  • a person skilled in the art can obviously think of the improvement of the processing box when using positively charged toner based on the technical solution of this embodiment, as long as the force applied to the positively charged toner during non-imaging operation is directed toward the developing roller, or the force applied to the positively charged toner is directed toward the photosensitive drum, but the force is not sufficient to move the toner to the surface of the photosensitive drum.
  • the process box of this embodiment is further optimized on the basis of the embodiment 1, and its shape and structure are basically the same as the shape and structure of the process box 10 of the embodiment 1.
  • the same parts will not be repeated here, and the differences will be mainly introduced below.
  • the parts that are the same as those in the embodiment 1 use the same reference numerals as those in the embodiment 1.
  • the processing box 10 also includes a retaining mechanism 50, which enables the connecting member 53 to maintain a stable electrical connection with the power supply member 52 during the imaging operation; during the cleaning operation, the connecting member 53 can maintain a stable electrical connection with the grounding member 51.
  • the holding mechanism 50 includes an engaging portion 531 disposed on the connecting member 53, a first engaged portion 521 disposed on the power supply member 52, and a second engaged portion 511 disposed on the grounding member 51.
  • the connecting member 53 receives the force of the force-applying member 20 and moves to the first position
  • the engaging portion 531 abuts against and is held by the first engaged portion 521, and the connecting member 53 and the power supply member 52 are electrically connected.
  • the connecting member 53 and the power supply member 52 can maintain electrical connection.
  • the first engaged portion 521 and the second engaged portion 511 can be set in a step shape.
  • the connector 53/the second connector 8 When the connector 53/the second connector 8 receives the force of the force-applying member 20 and moves from the first position to the second position, the engaging portion 531 abuts against and is held by the second engaged portion 511, and the connector 53/the second connector 8 maintains electrical connection with the grounding member 51. At this time, regardless of whether the force-applying member 20 continues to apply force to the connector 53/the second connector 8, the connector 53/the second connector 8 and the grounding member 51 can maintain electrical connection.
  • the joint part 531 is configured as a protruding structure, and at least one of the joint part 531, the first jointed part 521 and the second jointed part 511 is an elastic component.
  • a more preferred joint part 531 is an elastic conductor, such as a metal elastic sheet.
  • the processing box 10 having the above structure can be used in a variety of imaging devices.
  • the processing box 10 of this embodiment can be used in addition to the imaging device of embodiment 1, and can also be used in another imaging device.
  • the imaging device of this embodiment has a different action process from the force applying member 20 of the imaging device of embodiment 1, which is described in detail below in conjunction with Figures 21 to 27.
  • the force applying member 20 has a first force applying portion 201 and a second force applying portion 202, and the first force applying portion 201 and the second force applying portion 202 are separated by a preset distance to form a spacing space 203; the force applying member 20 has three positions during the action, namely, a third position A, a fourth position B and a fifth position C, wherein the third position A is located between the fourth position B and the fifth position C, and the fourth position B is closer to the photosensitive drum 12 relative to the fifth position C.
  • the force receiving end 58 of the process cartridge 10 is inserted into the spacing space.
  • the force applying member 20 moves to the fourth position B and applies a force to the force receiving end 58, and the second connecting member 8 rotates to the first position, at which time the engaging portion 531 abuts against the first engaged portion 521 and is held.
  • the second connecting member 8 is electrically connected to the power supply member 52, and the developing roller 22 can receive power (such as a voltage of -300V).
  • the force member 20 moves from the fourth position B to the third position A, and the force member 20 no longer applies a force to the force receiving end 58. Since the engaging portion 531 abuts against and is held by the first engaged portion 521, the connection between the connecting member 53 and the power supply member remains stable.
  • the voltage (such as -200V) at the exposed position on its surface is higher than the voltage of the developing roller 22. At this time, the negatively charged toner on the developing roller 22 can be transferred to the exposed position on the surface of the photosensitive drum 12.
  • the force-applying member 20 moves from the third position to the fifth position C and pushes the force receiving end 58, and the second connecting member 8 rotates to the second position.
  • the engaging portion 531 disengages from the first engaged portion 521, the engaging portion 531 abuts against and is held by the second engaged portion 511, and the second connecting member 8 is connected to the grounding member 51.
  • the force-applying member 20 moves from the fifth position C to the third position A, and the force-applying member 20 no longer applies a force to the force receiving end 58. Since the engaging portion 531 abuts against and is held by the second engaged portion 511, the electrical connection between the connecting member 53 and the grounding member 51 remains stable.
  • the developing roller 22 Since the developing roller 22 is grounded and the voltage is 0V, even if the developing roller 22 contacts the surface of the photosensitive drum 12, part of the charge on the surface of the photosensitive drum 12 is conducted to the developing roller through the carbon powder on the surface of the developing roller 22. Due to the grounding, the charge is conducted away. At this time, the voltage value of the developing roller 22 is higher than the voltage value on the photosensitive drum 12 (for example, -600V), so the carbon powder with negative charge on the developing roller 22 cannot be transferred to the surface of the photosensitive drum 12, thereby avoiding unnecessary carbon powder attached to the photosensitive drum 12 and avoiding contamination of the transfer belt. At the same time, there is no need to separate the photosensitive drum 12 and the developing roller 22, which simplifies the complex separation mechanism.
  • the shape of the above-mentioned retaining mechanism 50 is not limited by space and can be designed into various structural parts that can meet the above-mentioned characteristics, such as a directional elastic deformation mechanism or a locking mechanism, which can meet the requirement of maintaining stable contact in one direction under the action of external force.
  • the joining portion 531 is also provided with a clamping portion, and the first joined portion 521 and the second joined portion 511 are configured as clamping portions, and the joining portion 531 and the first joined portion 521 and the second joined portion 511 can switch between a clamping state and a non-clamping state.
  • the process box of this embodiment is further optimized on the basis of the embodiment 1, and its shape and structure are basically the same as the shape and structure of the process box 10 of the embodiment 1.
  • the same parts will not be repeated here, and the differences will be mainly introduced below.
  • the parts that are the same as those in the embodiment 1 use the same reference numerals as those in the embodiment 1.
  • the main difference between the process cartridge 10 of this embodiment and the process cartridge 10 of Embodiment 1 is that the power supply member 52 is not in direct contact with the main component of the imaging device but is electrically connected to the first conductive component 6 .
  • the processing box is further provided with a step-down unit 101 .
  • the step-down unit 101 is a resistor connected to a circuit, which can reduce the voltage applied to the power supply member 52 relative to the voltage of the first conductive component 6 .
  • the process cartridge further includes a voltage stabilizer 9 that can stabilize the voltage supplied to the developing roller 22 .
  • the step-down unit 101 and the voltage stabilizer 9 are integrated on a PCB board 60, and the PCB board 60 has a power access terminal 601, a ground terminal 602 and a power output terminal 603, wherein the power access terminal 601 is electrically connected to the first conductive component 6, the ground terminal 602 is electrically connected to the grounding member 51, and the power output terminal 603 is electrically connected to the power supply component 52.
  • the processing box 10 of this structure does not need to receive power independently from the main assembly of the imaging device by the power supply member 52, and can be applied to more imaging devices and achieve universal use.
  • the structure can be simplified to avoid unstable contact.
  • the second connecting member 8 When the second connecting member 8 moves to the first position, the second connecting member 8 is electrically connected to the power supply member 52, and the developing roller 22 can receive power lower than the voltage of the charging roller 13 (eg, a voltage of -300V).
  • the second connection member 8 When the second connection member 8 moves to the second position, the second connection member 8 is electrically connected to the grounding member 51 .
  • the processing box of this embodiment is further optimized on the basis of the above embodiment, and its shape and structure are basically the same as those of the processing box of the above embodiment.
  • the same parts will not be repeated here, and the differences will be mainly introduced below.
  • the parts that are the same as the above embodiment will use the labels of the above embodiment.
  • the connecting member 53 of this embodiment is always electrically connected to the power supply member 52, and the power supply member 52 is electrically connected to the imaging device, that is, the developing roller 22 is always electrically connected to the power supply member 52.
  • the connector 53 (the portion may be the second connector 8) is movable between a first position electrically connected to the power supply 52 and a second position electrically connected to the voltage regulating member; in the first position, the connector 53 is electrically connected to the power supply 52; in the second position, the connector 53 is electrically connected to both the power supply 52 and the voltage regulating member 51.
  • the voltage regulating member is the grounding member 51.
  • the connector 53/the second connector 8 is disconnected from the grounding member 51 (the connector/the second connector is in the first position)
  • the connector 53 is electrically connected to the power supply member 52, and a first voltage (such as -200V) is applied to the developing roller 22.
  • a first voltage such as -200V
  • the developing roller 22 is in contact with the photosensitive drum 12, and the toner on the developing roller 22 can be transferred to the exposure area of the photosensitive drum 12 under the action of the electric field force.
  • the connecting member 53/the second connecting member 8 when the connecting member 53/the second connecting member 8 is electrically connected to the grounding member 51 (the connecting member/the second connecting member is in the second position), the connecting member 53/the second connecting member 8 is always electrically connected to the power supply member 52, and the developing roller 22 is grounded.
  • the voltage applied to the developing roller 22 is the second voltage (such as 0V or -50V), and the absolute value of the second voltage (such as 0V or -50V) is smaller than the absolute value of the first voltage (such as -200V); at this time, the electric field force on the toner is toward the developing roller 22, or the electric field force is toward the photosensitive drum 12 but is not enough to move the toner from the surface of the developing roller 22 to the photosensitive drum 12.
  • the processing box with the above structure solves the problem that the toner is transferred to the surface of the photosensitive drum 12 when the developing roller 22 and the photosensitive drum 12 are not separated during non-imaging operation (such as cleaning operation), causing the photosensitive drum 12, the transfer belt, etc. to be contaminated by the toner.
  • the connecting member 53/ The second connecting member 8 is always electrically connected to the power supply member 52.
  • This embodiment makes it possible for the voltage switching process of the developing roller 12 to be free of disconnection time, thereby avoiding the electric field of the developing roller 22 to change instantly in a short period of time due to the disconnection interval in the middle of the switching process between the two positions of the connecting member 53, thereby causing the carbon powder on the surface of the developing roller 22 to be transferred to the surface of the photosensitive drum 12.
  • it can also avoid the frequent disconnection and closing operations between the connecting member 53/second connecting member 8 and the power supply member 52, which causes wear between the two, and also improves the stability of the electrical connection between the two.
  • the processing box of this embodiment is further optimized on the basis of the above-mentioned embodiments 1-4, and its shape and structure are basically the same as those of the processing boxes of the above-mentioned embodiments.
  • the same parts will not be repeated here, and the differences will be mainly introduced below.
  • the parts that are the same as those of the above-mentioned embodiments will use the labels of the above-mentioned embodiments.
  • At least a portion of the power supply member 52a of this embodiment is configured to move relative to the connecting member 53a. Specifically, at least a portion of the power supply member 52a can move between a position electrically connected to the connecting member 53a and a position not connected.
  • the power supply member 52a and the connecting member 53a can be in a state of not being electrically connected (as shown in Figure 34); during the imaging operation, the power supply member 52a is electrically connected to the connecting member 53a (as shown in Figure 35) to be able to supply power to the developing roller; during non-imaging operation (for example, during cleaning operation), the power supply member 52a is electrically disconnected from the connecting member 53a, and the power supply member 52a stops transmitting power to the developing roller 22; the connecting member 53a is electrically connected to the grounding member 51 (as shown in Figure 36).
  • the power supply member 52a and the connection member 53a are always electrically connected.
  • the processing box of this embodiment is further optimized on the basis of the above-mentioned embodiments 1-5, and its shape and structure are basically the same as those of the processing boxes of the above-mentioned embodiments.
  • the same parts will not be repeated here, and the differences will be mainly introduced below.
  • the parts that are the same as those of the above-mentioned embodiments will use the labels of the above-mentioned embodiments.
  • At least a portion of the grounding member 51b of this embodiment is configured to be movable. Specifically, at least a portion of the grounding member 51b can move between a position electrically connected to the connecting member 53b and a position not connected.
  • the grounding member 51b is not electrically connected to the connecting member 53b (as shown in Figure 37); during the non-imaging operation (for example, during the cleaning operation), the grounding member 51b is electrically connected to the connecting member 53b (as shown in Figure 38), and the developing roller 22 is grounded.
  • At least a portion of the grounding member and at least a portion of the power supply are configured to be movable relative to the connection member.
  • At least a portion of the ground member, at least a portion of the power supply, and at least a portion of the connection member are configured to be movable.

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Abstract

本发明提供一种处理盒，可拆卸地安装到设置有电力部件的电子照相成像设备中，处理盒包括感光鼓、显影辊以及用于向感光鼓充电的充电部件；处理盒还包括：电力供应件，能够与电力部件接触以接收电力，电力供应件能够向显影辊供应电力；接地构件，能够在与显影辊电连接的状态和不电连接的状态之间切换，当显影辊与接地构件不电连接时，显影辊具有第一电压值；当显影辊与接地构件电连接时，显影辊具有第二电压值；第一电压值的绝对值大于第二电压值的绝对值；具有此种结构的处理盒，在清洁操作时，显影辊和感光鼓无需分离，同时解决了在清洁操作时显影辊上的碳粉转移至感光鼓而导致打印缺陷的技术问题。

Description

一种处理盒 技术领域
本发明涉及电子照相成像技术领域，尤其涉及一种处理盒。
背景技术
在激光打印机、复印机、传真机等通过电子照相成像的成像设备中，通常这种设备至少包括一个电极组件以及显影剂转印组件，其中电极组件包括至少有一个充电电极，和一个显影电极，以及至少有一个接地端，有些设备还存在有供应电极,其中，转印组件包括有转印辊、转印带等显影剂转运构件。该设备还包括有一个处理盒，该处理盒能从成像设备中拆卸出来。现有的处理盒主要包括：将感光鼓单元和显影单元集成在一起的一体式处理盒，以及仅包括感光鼓单元或显影单元的分体式处理盒。
在一体式处理盒中，感光鼓单元和显影单元通常通过可旋转移动的方式彼此连接在一起。感光鼓单元包括感光单元框架、被感光单元框架可旋转支撑的感光鼓、充电辊等，显影单元包括显影单元框架、被显影单元框架可旋转支撑的显影辊、粉仓等。在处理盒成像操作期间，感光鼓与显影辊相互接触，在成像设备采用将显影辊放置成与感光鼓接触以使感光鼓上的潜像显影的显影方法的情况下，显影辊保持压在感光鼓的外周表面上，在处理盒处于非成像操作期间，需要对感光鼓、转印辊或者转印带等进行清洁操作。
现有的在处理盒上设置力接收机构，在成像操作时显影辊和感光鼓接触，清洁时力接收机构接收成像设备的作用力而使得显影辊和感光鼓分开，但此种力接收机构较为复杂。
现有一种处理盒，处理盒可拆卸地安装到成像设备中，处理盒包括：显影单元和感光单元，感光单元包括感光单元框架和感光鼓，显影单元包括显影单元框架和显影辊；第一力接收组件，位于处理盒长度方向的第一端，用于接收来自第一施力部的力；盒侧显影电极，位于处理盒长度方向的第二端；处理盒还包括开关装置，位于处理盒的所述第一端，开关装置包括第二力接收组件、第一电连通构件和第二电连通构件，第二力接收组件包括第二力接收构件和第一弹性件，第一电连通构件与第二力接收构件以及显影辊连接；第二电连通构件与盒侧显影电极连接；第二力接收构件可相对于显影单元框架在第一位置和第二位置之间以及在第二位置和第三位置之间移动。在处理盒装入所述成像设备的状态下，在成像操作期间第二力接收构件位于第二位置，第一电连通构件与第二电连通构件电接触，在非成像操作期间第二力接收构件位于第三位置，第一电连通构件与第二电连通构件不接触。
此种结构的处理盒，在成像操作期间，显影辊和感光鼓彼此接触，显影辊带电。在非成像操作期间，显影辊和感光鼓无需分离，二者仍处于保持接触状态，但显影辊的供电被断开。在非成像操作期间(如清洁操作时)，由于显影辊和感光鼓彼此接触，显影辊会从感光鼓上接收电力，显影辊和感光鼓之间电场方向并未改变且两者之间电势差不大(或者不具有电势差)，存在显影辊上的碳粉会受到感光鼓表面剪切力或者瞬间电场力影响而转印至感光鼓的表面的情况，使得感光鼓表面的碳粉无法被清除干净，从而也会进一步污染转印带、转印辊、感光鼓，造成打印缺陷。
发明内容
本发明提供了一种采用下述方案的处理盒，解决在非成像操作期间感光鼓和显影辊不分离，显影辊上的碳粉转移至感光鼓而导致打印缺陷的技术问题。
一种处理盒，可拆卸地安装到设置有电力部件的电子照相成像设备的主组件中，所述处理盒包括感光鼓、显影辊以及用于向所述感光鼓充电的充电部件；所述处理盒还包括：电力供应件，能够与所述电力部件接触以接收电力，所述电力供应件能够向所述显影辊供应电力；接地构件，能够在与所述显影辊电连接的状态和不电连接的状态之间切换，当所述显影辊与所述接地构件不电连接时，所述显影辊具有第一电压值；当所述显影辊与所述接地构件电连接时，所述显影辊具有第二电压值；所述第一电压值的绝对值大于所述第二电压值的绝对值。
优选的，所述处理盒还包括连接件，所述连接件能够与所述显影辊电连接，所述连接件能够与所述电力供应件电连接或能够与所述电力供应件在电连接状态和不电连接状态之间切换；所述连接件能够在与所述接地构件电连接的状态和不电连接的状态之间切换。
优选的，所述连接件的至少一部分能够在与所述电力供应件电连接的第一位置和与所述接地构件电连接的第二位置之间移动。
优选的，所述显影辊包括显影辊轴和支撑在所述显影辊轴上的第一主体部；所述连接件具有第一连接端和第二连接端，所述第一连接端与所述显影辊轴电连接，所述第二连接端能够在与所述电力供应件接触的第一位置和与所述接地构件接触的第二位置之间移动；当所述第二连接端处于第一位置时，所述显影辊具有第一电压值，当所述第二连接端当处于第二位置时，所述显影辊具有第二电压值，所述第一电压值的绝对值大于第二电压值的绝对值。
基于本发明的发明构思，本发明还提供一种处理盒，可拆卸地安装到设置有电力部件的电子照相成像设备的主组件中，所述处理盒包括感光鼓、显影辊以及用于向所述感光鼓充电的充电部件；所述处理盒还包括：电力供应件，能够与所述电力部件接触以接收电力；连接件，能够与所述显影辊电连接，所 述连接件能够与所述电力供应件电连接或能够与所述电力供应件在电连接的状态和不电连接的状态之间切换；接地构件，所述连接件的至少一部分能够在与所述接地构件电连接的状态和不电连接的状态之间切换。上述结构的处理盒，在清洁操作时，显影辊和感光鼓无需分离，盒体结构更加简单，同时解决了在清洁操作时显影辊上的碳粉转移至感光鼓而导致打印缺陷的技术问题。
优选的，所述连接件的至少一部分能够在与所述电力供应件电连接的第一位置和与所述接地构件电连接的第二位置之间移动。
优选的，在所述第一位置时，所述连接件与所述电力供应件电连接；在所述第二位置时，所述连接件与所述电力供应件、所述接地构件同时电连接。
优选的，所述连接件还包括力接收端，所述力接收端能够在突出位置和缩回位置之间移动，在所述突出位置，所述力接收端能够接收成像设备的施力构件的作用力从而使得所述连接件的至少一部分在所述第一位置和所述第二位置之间移动。
优选的，所述处理盒还包括弹性件，所述弹性件用于使得所述力接收端保持在缩回位置。
优选的，所述接地构件和/或所述电力供应件的至少一部分能够在与所述连接件电连接的位置和不与所述连接件电连接的位置之间移动。
优选的，所述处理盒还包括保持机构，所述保持机构能够在成像操作期间使得所述连接件能够保持与所述电力供应件电连接；在清洁操作期间能够使得所述连接件保持与所述接地构件电连接。
优选的，所述处理盒还包括设置在处理盒上方侧的第一导电组件，所述第一导电组件与所述电子照相成像设备接触并接收电力；所述充电部件为充电辊，所述充电辊与所述第一导电组件电连接。
附图说明
图1是实施例1处理盒的整体结构示意图；
图2是实施例1处理盒的另一角度的整体结构示意图；
图3是实施例1处理盒驱动端的结构示意图；
图4是实施例1的处理盒的导电端的结构示意图；
图5是实施例1的处理盒的截面图；
图6是实施例1的处理盒的局部结构分解图；
图7是实施例1感光单元的局部结构分解图；
图8是实施例1显影单元的局部结构分解图；
图9是实施例1的显影单元的结构示意图；
图10是实施例1第一盖部件、电力供应件、接地构件以及第一导电组件的组装结构示意图；
图11是实施例1第一盖部件、电力供应件、接地构件以及第一导电组件的另一角度看时的组装结构示意图；
图12是实施例1第一盖部件、电力供应件、接地构件以及第一导电组件的分解后的结构示意图；
图13是实施例1连接件与接地构件电连接时的局部电路原理图；
图14是实施例1连接件与电力供应件电连接时的局部电路原理图；
图15是实施例1的处理盒装入成像设备但未关闭门盖时力接收端与施力构件之间的配合关系图；
图16和图17是实施例1的处理盒装入成像设备且关闭门盖后连接件与施力构件之间的配合关系图；
图18是实施例1的处理盒处于成像操作时施力构件与电切换组件的配合关系图；
图19是实施例1的处理盒处于清洁操作时施力构件与电切换组件的配合关系图；
图20是实施例2的处理盒的电切换组件的结构示意图；
图21是实施例2的处理盒装入成像设备且关闭门盖后力接收端与施力构件之间的配合关系图；
图22是实施例2的处理盒处于成像操作时，施力构件处于第四位置时，施力构件与电切换组件的动作配合关系图；
图23是实施例2的处理盒处于成像操作时，施力构件处于第三位置时，施力构件与电切换组件的动作配合关系图；
图24是实施例2的处理盒处于成像操作时连接件与电力供应件之间的配合关系图；
图25是实施例2的处理盒处于清洁操作时，施力构件处于第五位置时，施力构件与电切换组件的动作配合关系图；
图26是实施例2的处理盒处于清洁操作时，施力构件处于第三位置时，施力构件与电切换组件的动作配合关系图；
图27是实施例2的处理盒处于清洁操作时连接件与接地构件之间的配合关系图；
图28是实施例3连接件与接地构件电连接时的局部电路原理图；
图29是实施例3连接件与电力供应件电连接时的局部电路原理图；
图30是实施例3电切换组件的结构示意图；
图31是实施例3电切换组件的分解结构示意图；
图32是实施例4连接件与接地构件断开电连接时的局部电路原理图；
图33是实施例4连接件与接地构件电连接时的局部电路原理图；
图34是实施例5连接件与电力供应件不电连接时的局部电路原理图；
图35实施例5连接件与电力供应件电连接时的局部电路原理图；
图36实施例5连接件与接地构件电连接时的局部电路原理图；
图37实施例6连接件与接地构件不电连接时的局部电路原理图；
图38实施例6连接件与接地构件电连接时的局部电路原理图。
具体实施方式
以下结合实施例及其附图1至图29对本发明作进一步说明。
实施例1
如图1至图19所示，处理盒10包括感光单元1和显影单元2，感光单元1包括感光单元框架11、驱动端111、导电端112、感光鼓12、充电部件13和第一驱动单元15，驱动端111和导电端112分别设置在感光单元框架11长度方向的两端；驱动端111和导电端112可以视为感光单元框架11的一部分，其可以是和感光单元框架11一体成型或者分体装配。在本实施例中，驱动端111和导电端112分别被配置为第一盖部件111和第二盖部件112，覆盖在感光单元框架11的端部，能够支撑感光鼓12和充电部件13。
感光鼓12可旋转地支撑在感光单元框架11上，充电部件优选为充电辊13，充电辊13可旋转地支撑在感光单元框架11上；充电部件13配置为与感光鼓12接触，以能够给感光鼓12充电。第一驱动单元15设置在感光鼓12的一端，以能够接收成像设备的驱动力而驱动感光鼓12和充电辊13旋转。
显影单元2包括显影单元框架21、显影辊22和送粉辊23、第二驱动单元25，显影单元框架21与感光单元框架11连接，显影辊22可旋转地支撑在显影单元框架21上并使得显影辊22和感光鼓12彼此接触，以使得在成像操作期间，显影辊22上的碳粉可转移至感光鼓12的表面；显影辊22包括显影辊轴221和支撑在显影辊轴221上的第一主体部222。送粉辊23可旋转地支撑在显影单元框架21上，以能够向显影辊22供应碳粉。第二驱动单元25设置在显影单元2的一端，以能够从成像设备接收驱动力并向显影辊22和送粉辊23供应驱动力，使得显影辊22和送粉辊23能够旋转。
在本实施例中，处理盒10还包括第一导电组件6，第一导电组件6能够与成像设备电连接，并从成像设备接收电力，更具体的是第一导电组件6与成像设备充电电极电连接。第一导电组件6还能够电连接至充电辊13，以向充电辊13提供电力，充电辊13通过与感光鼓12接触以及向感光鼓12充电。
经过反复研究和多次试验发现，在一种使用带负电碳粉的处理盒10中，当处理盒10处于成像操作期间，充电辊13接收来自成像设备充电电极的电压(如-900V)在于感光鼓12接触形成的间隙中，电离空气产生电子，电子分布到感光鼓12表面，感光鼓12表面形成一个电压(如-600V)，成像操作期间，设备接收到打印指令，激光发送器会发出激光，并照射在感光鼓12表面，使得感光鼓12表面打印区域被曝光，并导致被曝光的位置的电压升高，被曝光的位置电位升高至高于-300V，更优的约为-200V至 -100V之间；此时显影辊22接收设备显影电压(如-300V)，此时，感光鼓12被曝光的区域电压(如-200V)高于显影辊22上的电压(如-300V)，此时电场方向指向显影辊22，带负电的碳粉会从显影辊22转移至感光鼓12表面上被曝光的位置，从而得到打印图像。而在非曝光区域，感光鼓12表面电压(如-600V)低于显影辊22表面电压(如-300V)，该区域电场方向指向感光鼓12，因此该区域带负电碳粉收到的电场力指向显影辊22，显影辊22表面碳粉不会转移至感光鼓12的表面，从而非打印区域不上碳粉。在处理盒10处于非成像操作期间(如清洁状态时)，当供应至显影辊22上的电压被切断时，但通常显影电极是一个开源电极，因此，由于保持显影辊22与感光鼓12接触，感光鼓12可通过碳粉的导电作用将电力传递给显影辊22，使得显影辊保持有一定的电荷，其结果是显影辊22与感光鼓12表面上的电压电势差很小，或者某些时候电场方向会指向显影辊，此时显影辊22上的负电碳粉在感光鼓12与显影辊22之间摩擦剪切力作用下或者反向电场力作用下，能够转移至感光鼓12表面，造成感光鼓12被碳粉污染，进而使得碳粉附着到转印带上，从而导致感光鼓12和/或转印带清洁不干净，造成打印缺陷。
为解决上述缺陷，本实施例提供了一种新的技术方案。
如图1至图12所示，本实施例的处理盒10还包括电切换组件5，电切换组件5包括调压构件、电力供应件52以及连接件53，其中调压构件能够调节向显影辊22供应的电压，该电压不同于电力供应件52供应的电压，优选的调压构件为接地构件51，连接件53能够与显影辊22电连接，连接件53的至少一部分能够在与电力供应件52接触的第一位置和与接地构件51接触的第二位置之间移动。
换言之，连接件53的至少一部分能够在与电力供应件52电连接的第一位置和与接地构件51电连接的第二位置之间移动。
具体的，以下以供应负电荷的成像设备系统和使用带负电的碳粉为例进行介绍。
在本实施例中，电切换组件5被设置在处理盒10的导电一端(导电端112所在的一端)。
结合图18和图19，电力供应件52可电连接至成像设备，更具体的是电力供应件52电连接至成像设备的显影电极或供应电极。在成像操作期间，连接件53的至少一部分处于第一位置，连接件53与电力供应件52接触，使得显影辊22带电，此时显影辊22的电压低于感光鼓12上被曝光位置的电压，曝光区域与显影辊22之间形成的电场方向指向显影辊22，此时带负电的碳粉受到指向感光鼓12的电场力作用下，带负电的碳粉可以从显影辊22上转移至感光鼓12上的曝光位置，进而形成静电潜像。优选的，电力供应件52设置在第二盖部件112上，并至少有一部分从第二盖部件112向外暴露，在处理盒10安装至成像设备的状态下电力供应件52能够与成像设备主组件内电力部件接触，以能够接收电力。优选的，电力供应件52可以优导电金属件或导电树脂构成，其能与第二盖部件112一体成型，也可以分体设置。
接地构件51被配置为接地，具体的通过电连接至成像设备后接地。在处理盒以及成像设备进行清洁操作期间，连接件53的至少一部分处于第二位置，连接件53与接地构件51连接，此时显影辊22上的电压被拉低至0。其结果是，感光鼓12上的电压(如-600V)低于显影辊22的电压(如0V)，此时显影辊22与感光鼓12之间形成电场方向指向感光鼓，负电碳粉受到的电场力指向显影辊22，因此附着在显影辊22上的负电碳粉，在电场力作用下，碳粉无法转移至感光鼓12上，从而避免了感光鼓12被污染。
优选的，接地构件51的至少一部分从第二盖部件112向外暴露，在处理盒10安装至成像设备的状态下与成像设备主组件内的接地组件电连接，以实现接地。具体的，接地构件51包括第一接地件511和第二接地件512，第一接地件511的一端穿过第二盖部件112的孔并插入感光鼓12，另一端配置成与成像设备主组件内的接地组件(图中未示出)电连接，其能够使得感光鼓12接地。第二接地件512的一端与第一接地件511电连接，另一端配置为能够与连接件53电连接或断开电连接。优选的，第一接地件511为插入感光鼓12中的导电轴销。
在本实施例中，连接件53具有第一连接端56、第二连接端57和力接收端58，第一连接端56与显影辊轴221电连接，第二连接端57能够在与电力供应件52接触的第一位置和与接地构件51接触的第二位置之间移动。当连接件53/第二连接端57处于第一位置时，显影辊22具有第一电压值，当连接件53/第二连接端57当处于第二位置时，显影辊22具有第二电压值，第一电压值的绝对值大于第二电压的绝对值。
具体的，连接件53包括第一连接件7和第二连接件8，第一连接件7配置为可支撑显影辊轴221，第一连接端56设置在第一连接件7上。第一连接件7安装在显影单元框架21的一端，显影辊轴221可旋转的支撑在第一连接件7上，二者之间形成电连接，第一连接端56设置在第一连接件7上，与显影辊轴221接触。第一连接件7由导电材质构成，在一些实施方式中，第一连接件7不必设置成支撑显影辊轴221的部件，其可以是其他可电连接至显影辊22的导电件，例如导电金属片或导电丝等。
在一些实施方式中，第一导电组件6电连接成像设备，成像设备施加在第一导电组件6上电压约为-800V至-1200V之间，更优的约为-900V，第一导电组件6将该电压传导给充电构件13，充电构件13与感光鼓12之间接触，在彼此之间的间隙中电离空气，产生电子，并分布在感光鼓12表面，此时，感光鼓12表面附有约-600V电压。第二连接件8与第一连接件7电连接并能够在外力的作用下移动，第二连接端57和力接收端58设置在第二连接件8上，其中第二连接端57用于与接地构件51或电力供应件52电连接。
当处理执行打印指令时候，成像设备在接收打印指令后，会发射激光，照射在感光鼓12表面某些打印区域，感光鼓12打印区域被曝光后，电压会升高至高于-300V，优选是约为-200V至-100V之间，第二 连接端57与电力供应件52连接，显影辊22被设备施加一个显影电压(如-300V，电压绝对值为300V)，此时显影辊22具有第一电压，此时显影辊22上的电压低于感光鼓12上被曝光位置的电压(如-200V，电压绝对值为200V)，此时电场方向指向显影辊，负电碳粉受到的电场力指向感光鼓12，碳粉可以从显影辊22上转移至感光鼓12曝光区域，从而形成碳粉图像。而感光鼓12的非曝光区域，电压在一定时间内保持低于-300V的状态(如-600V)，此时该区域与显影辊22之间形成的电场方向指向感光鼓12，负电碳粉受到的电场力指向显影辊22，因此，该区域显影辊22上的碳粉无法转移至感光鼓12的非曝光区域。
当处理完成打印指令后(进行清洁操作时)，第二连接端57与接地构件51连接，显影辊22上的电压被拉低至0V，此时显影辊22具有第二电压，第二电压绝对值为0V，此种状态下，显影辊22与感光鼓12接触，即使感光鼓12向显影辊22传递电荷，但由于显影辊22接地，其电势保持在0V。因此无论感光鼓12表面是否存在曝光现象，此时可以确保感光鼓12的电压低于显影辊22电压，电场方向始终指向感光鼓12.负电碳粉在受到的电场力指向显影辊，此时，碳粉不会从显影辊22表面转移至感光鼓12表面上。
力接收端58用于从成像设备的施力构件20接收作用力而使得连接件53的至少一部分(第二连接件8)在第一位置和第二位置之间移动。具体的，第二连接件8能够在接收成像设备的施力构件20的作用力而在第一位置和第二位置之间移动。具体的，第二连接件8可转动地被支撑在处理盒10的一端，大致呈杆状，力接收端58设置在杆的下端，第二连接端57从杆的上侧向靠近感光单元的一侧延伸，并能够随着第二连接件8的摆动而摆动。
结合图15至图19，在一种成像设备的成像操作期间，施力构件20向第二连接件8施加作用力，使得第二连接件8转动至第一位置(如图18所示的位置)，在非成像操作(清洁期间)期间，施力构件20向第二连接件8施加作用力，使得第二连接件8转动至第二位置(如图19所示的位置)。具体的，在处理盒10处于成像操作时，施力构件20向靠近感光鼓12的方向移动并向力接收端58施加作用力，第二连接件8转动至与电力供应件52接触的位置。在处理盒10处于清洁操作时，施力构件20向远离感光鼓12的方向移动并向力接收端58施加作用力，第二连接件8转动至与接地构件51接触的位置。
可选择的，第二连接件8还可以包括导电部分和非导电部分，导电部分用于电连接显影辊22和电力供应件52或接地构件51，例如力接收端58可以配置成非导电的材质。
在一些实施方式中，力接收端58被配置为能够在突出位置和缩回位置之间移动，在突出位置(图17所示的力接收端58所处的位置)，力接收端58能够接收施力构件20的作用力，在缩回位置(图15所示的力接收端58所处的位置)力接收端58相比在突出位置更靠近框架内部；此种结构设计能够避免在处理盒10装机时与成像设备发生干涉。具体的，处理盒10还包括弹性件30，该弹性件30用于使得 力接收端58保持在缩回位置。优选的，弹性件30一端与第二连接件8连接，另一端与显影单元框架21连接，当第二连接件8受到成像设备上的按压机构的按压时，第二连接件8克服弹性件30的作用力而向下移动，力接收端58从缩回位置移动至突出位置。
在一些实施方式中，力接收端58还可以配置成相对显影单元框架21移动的部件，例如可以摆杆、自由重力块结构，这种结构能够在触碰到障碍物时发生移动，从而避开障碍物的干涉，既可以使得处理盒10顺畅的安装到设备中，又能满足接受设备施力构件20的作用，使得连接件的至少一部分(第二连接件8)在第一位置和第二位置之间移动，该结构方案结构更为简单。
接下来结合图13至图19详细描述处理盒10在成像操作和清洁操作时处理盒10各部件的配合过程。
如图15所示，在处理盒10装入成像设备且未闭合门盖时，成像设备的按压件40位于处理盒10的上方侧，第二连接件8不受按压件40的按压，力接收端58处于缩回位置。第二连接件8处于不与电力供应件52和接地构件51连接的初始位置。
如图16至图17所示，在成像设备的门盖闭合后，按压件40向下移动并按压第二连接件8，第二连接件8克服弹性件30的力的作用而向下移动，力接收端58从缩回位置移动至突出位置，在该突出位置，力接收端58能够接收施力构件20的作用力。第二连接件8处于不与电力供应件52和接地构件51电连接的初始位置。第一导电组件6与成像设备接触并接收电力，充电辊13接收电力并向感光鼓12充电。
如图14和图18所示，当处理盒10需要进行成像操作时，施力构件20向靠近感光鼓12的方向移动并推动力接收端58，第二连接件8转动至第一位置，此时第二连接件8与电力供应件52电连接，此时显影辊22能够接收设备显影电极的电力(如-300V的电压)，感光鼓12被曝光后，其表面被曝光的位置的电压(如-200V)高于显影辊22的电压，感光鼓12与显影辊22之间的电场方向指向显影辊22，此时显影辊22上带负电荷的碳粉受到电场力方向指向感光鼓12，因此显影辊22表面负电碳粉可转移至感光鼓12表面上的被曝光的位置。
如图14和图19所示，当处理盒10需要进行清洁操作时，施力构件20向远离感光鼓12的方向移动并推动力接收端58，第二连接件8转动至第二位置，此时第二连接件8与接地构件51连接，显影辊22被接地，电压为0V，此时就算显影辊22与感光鼓12表面接触，感光鼓12表面部分电荷通过显影辊22表面碳粉导通至显影辊，由于接地原因，电荷被导走，此时显影辊22的电压值高于感光鼓12上的电压值(例如-600V)，因此显影辊22上带负电荷的碳粉无法转移至感光鼓12表面，从而避免了感光鼓12附上不必要的碳粉，避免了污染转印带。同时不需要感光鼓12和显影辊22分离，简化了复杂的分离机构。
第二连接件8在第一位置和第二位置之间切换的过程中，第二连接件8存在同时不与接地构件51和电力供应件52电连接的第三位置，也即第二连接件8在第一位置和第二位置之间移动的过程中经过第三位置，但在一些情况下第三位置停留的时间较短。
在一些实施方式中，在处理盒未被安装至成像设备时，第二连接件8处于第一位置、第二位置或第三位置的任意一个。
在一些实施方式中，连接件53在第一位置切换至第二位置过程中，第二连接端57与接地构件51电连接的时间长于第二连接端57与电力供应件52电连接的时间。
在一些实施方式中，第二连接件8的初始位置可以是第一位置或第二位置。
在一些实施方式中，电切换组件可被设置在处理盒10的驱动端一侧。
在一些实施方式中，处理盒10还包括稳压件，其能够使得供应至显影辊22的电压保持稳定。
在一些实施方式中，接地构件51不必设置成接地，而是连接到一个降压单元或增压单元，使得显影辊22上的电压值保持高于感光鼓12表面的电压；换言之，接地构件、降压单元或增压单元构成调压构件。
在一些实施方式中，调压构件并未使得显影辊电压为0，只要使得显影辊电压高于感光鼓电压，电场方向由显影辊指向感光鼓，碳粉受到的力指向显影辊。
在一些实施方式中，调压构件并未使得显影辊电压为0，只要使得调压构件向显影辊供应的电压能够弱化显影辊与感光鼓之间的电势差即可，电场方向由感光鼓指向显影辊，当碳粉受到的力不足以使得碳粉从显影辊移动至感光鼓。
在一些实施例中，电切换组件还可以设置为控制感光鼓12是否接地来实现显影辊22与感光鼓12之间的电势差，只要使得带电碳粉不能满足从显影辊22表面转移到感光鼓12的电场力即可，更具体的是带电碳粉粒子受到的电场力能够克服显影辊22与感光鼓12之间的摩擦剪切力，或者带电碳粉粒子受到电场力以及显影辊22与感光鼓12之间的摩擦剪切力叠加不能克服带电碳粉粒子与显影辊之间吸引力(附着力)，使得碳粉无法从显影辊22表面转移至感光鼓12的表面。
在一些实施方式中，第一连接件7和第二连接件8可以一体成型。
在一些实施方式中，调压构件、电力供应件52以及连接件53并非完全由导电材质构成，例如具有导电部分和非导电部分，导电部分用于导电，非导电部分用于支撑导电部分或安装导电部分。
本实施例以带负电的碳粉为例进行介绍，本领域的技术人员更具本实施例的技术方案可以显而易见想到使用正电的碳粉时处理盒的改进，只要使得在非成像操作期间，带正电的碳粉受到的力指向显影辊，或受到的力指向感光鼓，但该力不足以使得碳粉移动至感光鼓的表面。
实施例2
本实施例的处理盒是在实施例1的基础上进一步优化，其形状结构与实施例1的处理盒10的形状结构基本相同，相同部分不再赘述，以下主要介绍其不同之处。以下和实施例1相同的部件沿用实施例1的标号。
如图图20至图27所示，在本实施例中，处理盒10还包括保持机构50，该保持机构50能够使得在成像操作期间，连接件53能够保持与电力供应件52稳定电连接；在清洁操作期间，连接件53能够保持与接地构件51稳定电连接。
具体的，保持机构50包括设置在连接件53上的接合部531、设置在电力供应件52上的第一被接合部521、以及设置在接地构件51上的第二被接合部511，当连接件53接收施力构件20的作用力移动至第一位置时，接合部531与第一被接合部521抵接并被保持住，连接件53与电力供应件52保持电连接，此时无论施力构件20是否持续向连接件53施加作用力，连接件53与电力供应件52均能保持电连接。具体的，第一被接合部521和第二被接合部511可设置为台阶状。
当连接件53/第二连接件8接收施力构件20的作用力从第一位置移动至第二位置时，接合部531与第二被接合部511抵接并被保持住，连接件53/第二连接件8与接地构件51保持电连接，此时无论施力构件20是否持续向连接件53/第二连接件8施加作用力，连接件53/第二连接件8与接地构件51均能保持电连接。
此种结构的处理盒10，连接件53与接地构件51、电力供应件52的电连接更加稳定。
具体的，接合部531配置为突起结构，接合部531、第一被接合部521和第二被接合部511三者至少有一个是弹性部件。更优的结合部531为弹性导电体，例如金属弹性片。
具有上述结构的处理盒10，其能够通用多种成像设备。换言之，本实施例的处理盒10除了可以适用实施例1的成像设备外，还能够适用于另一种成像设备。本实施例的成像设备与实施例1的成像设备的施力构件20的动作过程不同，具体的以下结合图21至图27进行详细描述。
如图21所示，施力构件20具有第一施力部201和第二施力部202，第一施力部201和第二施力部202间隔开预设的距离，形成间隔空间203；施力构件20在动作过程中具有三个位置，分别为第三位置A、第四位置B和第五位置C，其中第三位置A位于第四位置B和第五位置C之间，第四位置B相对于第五位置C更靠近感光鼓12。当处理盒10安装至成像设备的主组件中并闭合门盖时，处理盒10的力接收端58插入到间隔空间中。
如图22至图24所示，当处理盒10需要进行成像操作时，施力构件20移动至第四位置B并对力接收端58施加作用力，第二连接件8转动至第一位置，此时接合部531与第一被接合部521抵接并被保持 住，第二连接件8与电力供应件52电连接，此时显影辊22能够接收电力(如-300V的电压)。随后施力构件20从第四位置B移动至第三位置A，施力构件20不再向力接收端58施加作用力，由于接合部531与第一被接合部521抵接并被保持住，连接件53与电力供应件的连接保持稳定。感光鼓12被曝光后，其表面被曝光的位置的电压(如-200V)高于显影辊22的电压，此时显影辊22上带负电荷的碳粉可转移至感光鼓12表面上的被曝光的位置。
如图25至图27所示，当处理盒10需要进行清洁操作时，施力构件20从第三位置至移动至第五位置C并推动力接收端58，第二连接件8转动至第二位置，在此过程中，接合部531与第一被接合部521脱离，接合部531与第二被接合部511抵接并被保持住，第二连接件8与接地构件51连接，随后施力构件20从第五位置C移动至第三位置A，施力构件20不再向力接收端58施加作用力，由于接合部531与第二被接合部511抵接并被保持住，连接件53与接地构件51的电连接保持稳定。
由于显影辊22被接地，电压为0V，此时就算显影辊22与感光鼓12表面接触，感光鼓12表面部分电荷通过显影辊22表面碳粉导通至显影辊，由于接地原因，电荷被导走，此时显影辊22的电压值高于感光鼓12上的电压值(例如-600V)，因此显影辊22上带负电荷的碳粉无法转移至感光鼓12表面，从而避免了感光鼓12附上不必要的碳粉，避免了污染转印带。同时不需要感光鼓12和显影辊22分离，简化了复杂的分离机构。
上述保持机构50的形态不受空间所限制，可以设计成各种能够满足上述特征的结构部，例如采用定向弹性形变机构，或者锁定机构，均可以满足在收到外力作用下，可以趋向一个方向的保持稳定接触。
在一些实施方式中，接合部531还被设置有卡接部，第一被接合部521和第二被接合部511配置为被卡接部，接合部531与第一被接合部521和第二被接合部511之间可以在卡接状态和非卡接状态时间切换。
实施例3
本实施例的处理盒是在实施例1的基础上进一步优化，其形状结构与实施例1的处理盒10的形状结构基本相同，相同部分不再赘述，以下主要介绍其不同之处。以下和实施例1相同的部件沿用实施例1的标号。
结合如图28至图31所示，本实施例的处理盒10与实施例1的处理盒10的主要不同之处在于电力供应件52不与成像设备的主组件直接接触，而是电连接至第一导电组件6。
在本实施例中，处理盒还设置有降压单元101，具体的该降压单元101为连接至电路中的电阻，其能够使得施加在电力供应件52上的电压相对于第一导电组件6的电压被降低。
在一些实施方式中，处理盒还包括稳压件9，其能够使得供应至显影辊22的电压保持稳定。
如图所示，在一些实施方式中，降压单元101和稳压件9集成在一个PCB板60上，PCB板60具有电力接入端601、接地端602以及电力输出端603，其中电力接入端601与第一导电组件6电连接，接地端602与接地构件51电连接，电力输出端603与电力供应件52电连接。
此种结构的处理盒10，电力供应件52无需独立从成像设备的主组件中接收电力，能够适用更多的成像设备，实现通用。另外还能够简化结构，避免接触的不稳定。
当第二连接件8移动至第一位置时，第二连接件8与电力供应件52电连接，此时显影辊22能够接收低于充电辊13的电压的电力(如-300V的电压)。
当第二连接件8移动至第二位置时，第二连接件8与接地构件51电连接。
本实施例的技术方案可以适用于实施例1，也可以适用于实施例2。
实施例4
本实施例的处理盒是在上述实施例的基础上进一步优化，其形状结构与上述实施例的处理盒形状结构基本相同，相同部分不再赘述，以下主要介绍其不同之处，以下和上述实施例相同的部件沿用上述实施例的标号。
如图32和图33所示，本实施例的连接件53始终与电力供应件52保持电连接，电力供应件52与成像设备电连接，也即，显影辊22始终与电力供应件52保持电连接。
具体的，连接件53至少一部分(该部分可以是第二连接件8)能够在与电力供应件52电连接的第一位置和与调压构件电连接的第二位置之间移动；在第一位置时，连接件53与电力供应件52电连接；在第二位置时，连接件53与电力供应件52和调压构件51同时电连接。具体的，调压构件为接地构件51。
如图32所示，当连接件53/第二连接件8与接地构件51断开时(连接件/第二连接件处于第一位置)，连接件53与电力供应件52电连接，显影辊22被施加第一电压(如-200V)，此时显影辊22与感光鼓12接触，显影辊22上的碳粉在电场力的作用下可转移至感光鼓12的曝光区域。
如图33所示，当连接件53/第二连接件8与接地构件51电连接时(连接件/第二连接件处于第二位置)，连接件53/第二连接件8始终与电力供应件52电连接，显影辊22被接地，此时显影辊22被施加的电压为第二电压(如0V或-50V)，第二电压(如0V或-50V)的绝对值小于第一电压(如-200V)的绝对值；此时碳粉受到的电场力朝向显影辊22，或电场力朝向感光鼓12但不足以使得碳粉从显影辊22表面移动至感光鼓12上。
具有上述结构的处理盒，解决了在非成像工作时(如清洁操作)显影辊22和感光鼓12不分离而导致的碳粉被转移至感光鼓12表面引起感光鼓12、转印带等被碳粉污染的情况。另外，由于连接件53/ 第二连接件8始终与电力供应件52电连接，这样的实施方案使得显影辊12的电压切换过程不存在断开连接的时间，避免了显影辊因连接构件53在从两个位置之间切换过程，中间出现断开间隔时间而导致电场在短暂时间内发生瞬间变化，从而使得显影辊22表面的碳粉转运至感光鼓12表面。其次还可以避免连接件53/第二连接件8与电力供应件52之间频繁断开和闭合操作导致二者之间的磨损情况，同时也提到了二者电连接的稳定性。
实施例5
本实施例的处理盒是在上述实施例1-4的基础上进一步的优化，其形状结构与上述实施例的处理盒形状结构基本相同，相同部分不再赘述，以下主要介绍其不同之处，以下和上述实施例相同的部件沿用上述实施例的标号。
如图34至图36所示，与上述实施例不同的是，本实施例的电力供应件52a的至少一部分被设置为相对连接件53a移动。具体的，电力供应件52a的至少一部分能够在与连接件53a电连接的位置和不连接接的位置之间移动。在成像操作前，电力供应件52a与连接件53a可以处于不电连接的状态(如图34所示)；在成像操作时，电力供应件52a与连接件53a电连接(如图35所示)，以能够向显影辊供应电力；在非成像操作时(例如在清洁操作时)，电力供应件52a与连接件53a断开电连接，电力供应件52a停止向显影辊22传输电力；连接件53a与接地构件51电连接(如图36所示)。
在一些实施方式中，电力供应件52a与连接件53a始终保持电连接。
实施例6
本实施例的处理盒是在上述实施例1-5的基础上进一步的优化，其形状结构与上述实施例的处理盒形状结构基本相同，相同部分不再赘述，以下主要介绍其不同之处，以下和上述实施例相同的部件沿用上述实施例的标号。
如图37和图38所示，与上述实施例不同的是，本实施例的接地构件51b的至少一部分被设置为可移动。具体的，接地构件51b的至少一部分能够在与连接件53b电连接的位置和不连接接的位置之间移动。在成像操作时，接地构件51b不与与连接件53b电连接(如图37所示)；在非成像操作时(例如在清洁操作时)，接地构件51b与连接件53b电连接(如图38所示)，显影辊22被接地。
在一些实施方式中，接地构件的至少一部分和电力供应件的至少一部分被设置为可相对连接件移动。
在一些实施方式中，接地构件的至少一部分、电力供应件的至少一部分和连接件的至少一部分被设置为可移动。
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制，为了便于区分不同的部件，本发明引入了“第一”、“第二”等术语，其中术语“第一”、“第二”等术语不是理解为对其数量上的限制，根据说明书的记载，“第一”、“第二”等说明的部件可以是一个，也可以是包含多个。
尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (12)

  1. 一种处理盒，可拆卸地安装到设置有电力部件的电子照相成像设备的主组件中，所述处理盒包括感光鼓、显影辊以及用于向所述感光鼓充电的充电部件；
    其特征在于，所述处理盒还包括：
    电力供应件，能够与所述电力部件接触以接收电力，所述电力供应件能够向所述显影辊供应电力；
    接地构件，能够在与所述显影辊电连接的状态和不电连接的状态之间切换，当所述显影辊与所述接地构件不电连接时，所述显影辊具有第一电压值；当所述显影辊与所述接地构件电连接时，所述显影辊具有第二电压值；所述第一电压值的绝对值大于所述第二电压值的绝对值。
  2. 根据权利要求1所述的处理盒，其特征在于，所述处理盒还包括连接件，所述连接件能够与所述显影辊电连接，所述连接件能够与所述电力供应件电连接或能够与所述电力供应件在电连接状态和不电连接状态之间切换；所述连接件能够在与所述接地构件电连接的状态和不电连接的状态之间切换。
  3. 根据权利要求2所述的处理盒，其特征在于，所述连接件的至少一部分能够在与所述电力供应件电连接的第一位置和与所述接地构件电连接的第二位置之间移动。
  4. 根据权利要求2所述的处理盒，其特征在于，所述显影辊包括显影辊轴和支撑在所述显影辊轴上的第一主体部；所述连接件具有第一连接端和第二连接端，所述第一连接端与所述显影辊轴电连接，所述第二连接端能够在与所述电力供应件接触的第一位置和与所述接地构件接触的第二位置之间移动；当所述第二连接端处于第一位置时，所述显影辊具有第一电压值，当所述第二连接端当处于第二位置时，所述显影辊具有第二电压值，所述第一电压值的绝对值大于第二电压值的绝对值。
  5. 一种处理盒，可拆卸地安装到设置有电力部件的电子照相成像设备的主组件中，所述处理盒包括感光鼓、显影辊以及用于向所述感光鼓充电的充电部件；
    其特征在于，所述处理盒还包括：
    电力供应件，能够与所述电力部件接触以接收电力；
    连接件，能够与所述显影辊电连接，所述连接件能够与所述电力供应件电连接或能够与所述电力供应件在电连接的状态和不电连接的状态之间切换；
    接地构件，所述连接件的至少一部分能够在与所述接地构件电连接的状态和不电连接的状态之间切换。
  6. 根据权利要求5所述的处理盒，其特征在于，所述连接件的至少一部分能够在与所述电力供应件电连接的第一位置和与所述接地构件电连接的第二位置之间移动。
  7. 根据权利要求6所述的处理盒，其特征在于，在所述第一位置时，所述连接件与所述电力供应件电连接；在所述第二位置时，所述连接件与所述电力供应件、所述接地构件同时电连接。
  8. 根据权利要求6所述的处理盒，其特征在于，所述连接件还包括力接收端，所述力接收端能够在突出位置和缩回位置之间移动，在所述突出位置，所述力接收端能够接收成像设备的施力构件的作用力从而使得所述连接件的至少一部分在所述第一位置和所述第二位置之间移动。
  9. 根据权利要求6所述的处理盒，其特征在于，所述处理盒还包括弹性件，所述弹性件用于使得所述力接收端保持在缩回位置。
  10. 根据权利要求2-8任意一项权利要求所述的处理盒，其特征在于，所述接地构件和/或所述电力供应件的至少一部分能够在与所述连接件电连接的位置和不与所述连接件电连接的位置之间移动。
  11. 根据权利要求2-8任意一项权利要求所述的处理盒，其特征在于，所述处理盒还包括保持机构，所述保持机构能够在成像操作期间使得所述连接件能够保持与所述电力供应件电连接；在清洁操作期间能够使得所述连接件保持与所述接地构件电连接。
  12. 根据权利要求11所述的处理盒，其特征在于，所述处理盒还包括设置在处理盒上方侧的第一导电组件，所述第一导电组件与所述电子照相成像设备接触并接收电力；所述充电部件为充电辊，所述充电辊与所述第一导电组件电连接。
PCT/CN2023/127958 2022-10-30 2023-10-30 一种处理盒 WO2024093949A1 (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2535366A1 (de) * 1974-08-14 1976-02-26 Ricoh Kk Elektrophotographisches verfahren und einrichtung zur durchfuehrung des verfahrens
CN1900838A (zh) * 2005-07-19 2007-01-24 三星电子株式会社 显影装置和向显影装置提供电压的方法
CN204044502U (zh) * 2014-08-22 2014-12-24 珠海天威飞马打印耗材有限公司 处理盒及其显影电压控制电路
CN213876326U (zh) * 2020-11-02 2021-08-03 江西亿铂电子科技有限公司 一种显影盒、处理盒及电子成像设备

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2535366A1 (de) * 1974-08-14 1976-02-26 Ricoh Kk Elektrophotographisches verfahren und einrichtung zur durchfuehrung des verfahrens
CN1900838A (zh) * 2005-07-19 2007-01-24 三星电子株式会社 显影装置和向显影装置提供电压的方法
CN204044502U (zh) * 2014-08-22 2014-12-24 珠海天威飞马打印耗材有限公司 处理盒及其显影电压控制电路
CN213876326U (zh) * 2020-11-02 2021-08-03 江西亿铂电子科技有限公司 一种显影盒、处理盒及电子成像设备

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