CN217506370U - Developing cartridge and process cartridge - Google Patents

Abstract

The utility model relates to a developing box and processing box. The developing box of the embodiment comprises a developing roller and a developing frame, wherein a developer accommodating bin is formed in the developing frame, the developing frame is provided with a first end and a second end which are oppositely arranged in the axial direction of the developing roller, the first end of the developing frame is provided with a power receiving part used for receiving rotary driving force, and the second end of the developing frame is provided with a detected part; wherein, the bottom of the developing frame is provided with one or more rolling members, and the rotating axes of the rolling members and the developing roller are parallel to each other. The developing box of the embodiment can be combined with the photosensitive drum box to form the split type processing box, the rolling piece is arranged to be beneficial to the smooth movement of the developing box in the photosensitive frame, and the developing box has the advantage of flexible structural design.

Description

Developing cartridge and process cartridge

Technical Field

The utility model relates to a develop box and processing box for electronic photograph imaging equipment.

Background

An electrophotographic image forming apparatus can perform an image forming job using a process cartridge including a developing roller and a photosensitive drum, an electrostatic latent image being formed on the photosensitive drum at the time of the image forming job, the developing roller supplying a developer to the photosensitive drum to develop the electrostatic latent image.

There is a separate type process cartridge in which a photosensitive drum cartridge and a developing cartridge are assembled relatively independently. The developing device comprises a photosensitive drum box, a developing roller and a control device, wherein the photosensitive drum box is provided with a photosensitive frame and a rotatable photosensitive drum; developing cartridge movable mounting has the atress portion in developing cartridge holding tank of photosensitive frame, and developing cartridge is last, and developing cartridge is whole to produce the removal holding the chamber behind the atress portion atress for developer roll and sensitization drum separation. During a non-image forming operation, the developing roller is separated from the photosensitive drum to clean the photosensitive drum, and after the cleaning is completed, the developing cartridge is returned to an initial position so that the developing roller and the photosensitive drum are in contact to perform an image forming operation.

Disclosure of Invention

The utility model mainly aims at providing a can be in smooth and easy motion and the nimble development box of structural design in the photosensitive frame.

Another object of the present invention is to provide a process cartridge including the above developing cartridge.

In order to achieve the above main object, a first aspect of the embodiments of the present invention provides a developing cartridge, including a developing roller and a developing frame having a developer accommodating chamber formed therein, the developing frame having a first end and a second end oppositely disposed in an axial direction of the developing roller, the first end of the developing frame being provided with a power receiving member for receiving a rotational driving force, the second end of the developing frame being provided with a detected member; wherein, the bottom of the developing frame is provided with one or more rolling members, and the rotating axes of the rolling members and the developing roller are parallel to each other.

The developing cartridge of the embodiment may be combined with the photosensitive drum cartridge into a single-body type process cartridge. Wherein, the rolling member forms the roll cooperation with photosensitive frame in the development box motion process, is favorable to the development box to smoothly move in photosensitive frame's development box holding tank.

Further, the rolling member is arranged on the developing frame, and the developing box has the advantage of flexible structural design. Particularly, with the rolling member setting in development frame's bottom, only need consider when developing the box design the gyro wheel can with the diapire cooperation of developing the box holding tank can, consequently have the nimble advantage of structural design, and if set up the rolling member on photosensitive frame, then need set up abrupt muscle in addition in the corresponding position on the development frame diapire and come the rolling member cooperation on the photosensitive frame, it is great to the structural design restriction of developing the box.

According to the utility model discloses a concrete implementation mode, the rolling member includes the roller, and the axial both ends of roller have respectively rather than coaxial first pivot and the second pivot that sets up, and development frame's bottom has the installation department, and the installation department forms to rotate with first pivot and second pivot to be connected.

More specifically, the mounting portion includes: the supporting shaft hole is connected with the first rotating shaft in a rotating mode; the tail ends of the elastic clamping arms are provided with arc-shaped surfaces which are in running fit with the second rotating shaft, and gaps for the second rotating shaft to press in are formed between the elastic clamping arms which are arranged in pairs. The mounting structure has the advantages of simple structure and convenience in mounting the rolling parts.

More specifically, the bottom of the developing frame is provided with an arc-shaped groove adapted to the roller. Wherein, the arc wall can carry out radial spacing to the roller to avoid the roller to produce in the rolling process and beat.

According to the utility model discloses a concrete implementation mode, development frame's second end is equipped with the powder mouth of irritating sealed by the sealing plug, and the below of sealing plug is stretched to the rolling member on the direction of height of developing box. Therefore, the motion of the developing box can be prevented from being influenced by the fact that the sealing plug contacts the bottom wall of the photosensitive frame, and the sealing plug is prevented from loosening and leaking powder due to the fact that the sealing plug contacts the bottom wall of the photosensitive frame.

More specifically, the second end of the developing frame is provided with a recessed part which is retracted towards the inner side of the developing frame in the axial direction of the developing roller, and the powder filling port is arranged on the recessed part, so that loosening and powder leakage caused by contact of the sealing plug and the side wall of the photosensitive frame facing the second end of the developing frame are avoided.

More specifically, at least one rolling member is provided at a position close to the toner filling opening to better avoid the sealing plug from coming into contact with the bottom wall of the developing cartridge accommodating groove.

According to a specific embodiment of the present invention, the number of the rolling member is one, and the rolling member is closer to the second end of the developing frame than the first end of the developing frame.

More specifically, a side of the developing frame opposite to the developing roller is provided with a handle portion, and the rolling member is located between the handle portion and the second end of the developing frame in the axial direction of the developing roller.

In order to achieve the above another object, a second aspect of the embodiments of the present invention discloses a process cartridge including a photosensitive drum cartridge and any one of the above-described developing cartridges; the photosensitive drum box is provided with a photosensitive frame and a photosensitive drum, and the developing box is movably arranged in a developing box accommodating groove of the photosensitive frame and can move between a first position where the developing roller is contacted with the photosensitive drum and a second position where the developing roller is separated from the photosensitive drum.

To more clearly illustrate the objects, technical solutions and advantages of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

Drawings

FIG. 1 is a perspective view of an embodiment of a developing cartridge of the present invention;

fig. 2 is a side view of an embodiment of the developing cartridge of the present invention;

FIG. 3 is an exploded view of the assembled structure of the rolling member and the sealing plug in the embodiment;

fig. 4 is a structural view of the second end of the developing cartridge in the embodiment, in which the second end cap and the sealing plug are omitted.

Detailed Description

Developing cartridge embodiment

The developing box of the embodiment can be movably arranged in the developing box accommodating groove of the photosensitive drum box to form a split type processing box. As shown in fig. 1, the developing cartridge of the embodiment includes a developing roller 10 and a developing frame 20 having a developer accommodating chamber formed therein, a handle portion 26 is provided on a side of the developing frame 20 opposite to the developing roller 10, and the developing frame 20 has a first end 20a and a second end 20b which are oppositely provided.

The first end 20a of the developing frame 20 is provided with a first end cap 31, a power receiving part 32, and a gear transmission mechanism 33, and the power receiving part 32 is used to receive power from the electrophotographic image forming apparatus and to rotate the developing roller 10 by the gear transmission mechanism 33.

The second end 20b of the developing frame 20 is provided with a second end cap 41 and a detected member 42. The detected member 42 is at least partially exposed from the second end cap 41 and can be detected by the electrophotographic image forming apparatus to identify information related to the developing cartridge (e.g., the capacity of the developer and/or the freshness of the developing cartridge).

As shown in fig. 3 and 4, the second end 20b of the developing frame 20 is also provided with a powder filling port 23 sealed by a sealing plug 24, the powder filling port 23 being used to add the developer into the developer accommodating chamber. Preferably, the second end 20b of the developing frame 20 has a recess 25, the recess 25 is retracted toward the inside of the developing frame 20 in the axial direction of the developing roller 10, and the powder filling port 23 is provided on the recess 25, so as to avoid loosening and powder leakage caused by the contact of the sealing plug 24 with the sidewall of the photosensitive frame facing the second end 20b of the developing frame 20.

As shown in fig. 1, the bottom (the side facing the developing cartridge receiving groove) of the developing frame 20 is provided with a rolling member 50, and the rotational axis of the rolling member 50 and the rotational axis of the developing roller 10 are parallel to each other, so that the developing cartridge can move smoothly in the developing cartridge receiving groove of the photosensitive frame. Wherein the rolling member 50 is closer to the second end 20b of the developing frame 20 than the first end 20a of the developing frame 20; for example, the rolling member 50 may be located between the grip portion 26 and the second end 20b of the developing frame 20 in the axial direction of the developing roller 10.

Preferably, as shown in fig. 2, the rolling member 50 protrudes below the sealing plug 24 in the height direction H of the developing cartridge, so as to avoid the sealing plug 24 contacting the bottom wall of the photosensitive frame (i.e., the bottom wall of the developing cartridge receiving groove) from affecting the smooth movement of the developing cartridge, and to avoid the sealing plug 24 coming loose by contacting the bottom wall of the photosensitive frame. Preferably, the roller 50 is disposed near the powder filling opening 23 to better avoid the sealing plug 24 from contacting the bottom wall of the developing cartridge receiving groove.

In an alternative embodiment, as shown in fig. 2 and 3, the rolling member 50 includes a roller 51, the roller 51 has a first rotating shaft 521 and a second rotating shaft 522 coaxially disposed at two axial ends thereof, and the bottom of the developing frame 20 is provided with a mounting portion rotatably connected with the first rotating shaft 521 and the second rotating shaft 522 to form a rotational connection. The roller 51, the first rotating shaft 521 and the second rotating shaft 522 may be integrally formed, or may be rotatably sleeved on the first rotating shaft 521 and the second rotating shaft 522, and the first rotating shaft 521 and the second rotating shaft 522 may be different portions of the same rotating shaft.

In an alternative embodiment, the mounting portion has a support shaft hole 21 and elastic catching arms 22 arranged in pairs. Wherein, the supporting shaft hole 21 is rotatably connected with the first rotating shaft 521; the end of the elastic latch arm 22 is formed with an arc surface 221 rotatably engaged with the second rotating shaft 522, and a gap 222 for pressing the second rotating shaft 522 is formed between the elastic latch arms 22 arranged in pairs, and the minimum width of the gap 222 is smaller than the diameter of the second rotating shaft 522, so as to prevent the second rotating shaft 522 from being separated from the elastic latch arms 22. Further, the bottom of the developing frame 20 may be provided with an arc-shaped groove 27 adapted to the roller 51; the arcuate slot 27 provides a radial stop for the roller 51 to prevent the roller 50 from jumping during movement of the cartridge.

In other embodiments of the present invention, the bottom of the developing frame 20 may also be provided with a plurality of rolling members 50, and the plurality of rolling members 50 may be disposed along the axial direction of the developing roller 10.

Process cartridge embodiment

The process cartridge of the embodiment comprises a photosensitive drum cartridge and the developing cartridge disclosed in the previous embodiment, wherein the photosensitive drum cartridge is provided with a photosensitive frame and a photosensitive drum (not shown), and the developing cartridge is movably arranged in a developing cartridge accommodating groove of the photosensitive frame and can move between a first position where a developing roller is contacted with the photosensitive drum and a second position where the developing roller is separated from the photosensitive drum.

The photosensitive drum box structure with the developing box accommodating groove and the motion structure of the developing box in the developing box accommodating groove can refer to the prior art and are not described in detail.

Although the present invention has been described above by way of examples, it should be understood that the above examples are intended to illustrate and describe only possible embodiments of the invention, and should not be construed as limiting the scope of the invention, i.e. equivalent alterations and modifications made by those skilled in the art in light of the present invention are intended to be covered by the scope of the claims of the present invention.

Claims (10)

1. A developing box comprises a developing roller and a developing frame, wherein a developing agent accommodating bin is formed in the developing frame, the developing frame is provided with a first end and a second end which are oppositely arranged in the axial direction of the developing roller, the first end of the developing frame is provided with a power receiving piece used for receiving rotary driving force, and the second end of the developing frame is provided with a detected piece; the method is characterized in that: one or more rolling parts are arranged at the bottom of the developing frame, and the rotating axis of the rolling part is parallel to that of the developing roller.

2. A developing cartridge according to claim 1, wherein: the rolling part includes the roller, the axial both ends of roller have respectively rather than coaxial first pivot and the second pivot that sets up, development frame's bottom has the installation department, the installation department with first pivot with the second pivot forms to rotate and connects.

3. A developing cartridge according to claim 2, wherein said mounting portion includes:

the supporting shaft hole is connected with the first rotating shaft in a rotating mode;

the tail ends of the elastic clamping arms are provided with arc-shaped surfaces which are in running fit with the second rotating shaft, and gaps for the second rotating shaft to press in are formed between the elastic clamping arms which are arranged in pairs.

4. A developing cartridge according to claim 2, wherein: and an arc-shaped groove matched with the roller is formed in the bottom of the developing frame.

5. A developing cartridge according to claim 1, wherein: and the second end of the developing frame is provided with a powder filling port sealed by a sealing plug, and the rolling piece protrudes to the lower part of the sealing plug in the height direction of the developing box.

6. A developing cartridge according to claim 5, wherein: the second end of the developing frame is provided with a concave part, the concave part retracts towards the inner side of the developing frame in the axial direction of the developing roller, and the powder filling port is arranged on the concave part.

7. A developing cartridge according to claim 5, wherein: at least one rolling member is arranged at a position close to the powder filling opening.

8. A developing cartridge according to claim 1, wherein: the rolling member is one in number, and the rolling member is closer to the second end than the first end.

9. A developing cartridge according to claim 8, wherein: a handle portion is provided on a side of the developing frame opposite to the developing roller, and the rolling member is located between the handle portion and the second end in an axial direction of the developing roller.

10. A process cartridge includes a photosensitive drum cartridge having a photosensitive frame and a photosensitive drum; the method is characterized in that:

a developing cartridge according to any one of claims 1 to 9, being movably mounted in a developing cartridge accommodating groove of said photosensitive frame, and being movable between a first position where said developing roller is in contact with said photosensitive drum and a second position where said developing roller is separated from said photosensitive drum.

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