CN117826553A - Powder box and imaging equipment - Google Patents

Abstract

The invention provides a powder box and imaging equipment, wherein the powder box is detachably arranged in a mounting cavity of the imaging equipment, and an electric contact pin is arranged in the mounting cavity; the powder box comprises a box body, a chip and a chip seat, wherein the chip seat is arranged on the box body, and the chip is arranged in the chip seat and is in electrical contact with the electric contact pin; the chip seat comprises a mounting groove, the chip is mounted in the mounting groove, an opening is formed in one side of the mounting groove, the electric contact surface of the chip faces the opening, and the electric contact pin and the electric contact surface form an acute angle. When the powder box extrudes the electric contact, the electric contact pin can slide on an inclined plane while contacting the electric contact surface, so that the movement amount of the electric contact is reduced, and the electric contact of the imaging device is prevented from being damaged.

Description

Powder box and imaging equipment

Technical Field

The present invention relates to the field of electrophotographic imaging, and in particular, to a powder cartridge and an imaging apparatus.

Background

An electrophotographic image forming apparatus is an apparatus for forming an image on a printing medium such as paper using the principle of electrophotography, and includes a printer and a cartridge detachably mounted in the printer.

Referring to fig. 1, a conventional powder cartridge includes a developing unit 101 and an image forming unit 102. The developing unit 101 includes a developing frame 111, a stirring frame for conveying the toner in the toner hopper toward the developing roller 113, a developing roller 113 for conveying the toner to the surface of the photosensitive drum 122 for latent image, a transmission assembly for driving each moving member in the developing unit 101 to rotate, and the like, and the developing roller 113 and the stirring frame are rotatably mounted on the developing frame 111. The outer wall of the developing frame 111 is further provided with a chip holder 103, and the chip is detachably mounted on the chip holder 103.

The image forming unit 102 includes a drum frame 121, a photosensitive drum 122, a driving force receiving member, and the like, the photosensitive drum 122 being rotatably mounted on the drum frame 121, the driving force receiving member being provided at an axial end of the photosensitive drum 122, the rotational force of the image forming apparatus being coupled to the photosensitive drum 122. The developing frame 111 is hinged to the drum frame 121, and when the photosensitive drum 122 is cleaned, the developing frame 111 may be rotated at an angle with respect to the drum frame 121, thereby driving the developing roller 113 to be separated from the photosensitive drum 122.

When the powder box is correctly installed in the installation cavity of the imaging device, the lower side surface of the chip seat 103 contacts with the lower surface of the installation cavity, and the lower surface of the installation cavity of the imaging device is easily polluted by carbon powder, so that the chip seat 103 of the developing frame 111 can continuously scrape and pollute the carbon powder in the installation cavity onto the chip 107 in the process of moving along with the developing frame 111, and the electric contact surface 108 of the chip 107 is easily polluted, thereby causing poor electric contact between the chip 107 and the electric contact 301 of the imaging device.

In addition, the die pad 103 is provided with a first rib 105 and a second rib 106 in a second direction perpendicular to the developing roller 113. When the compact is mounted to the print, the first web 105 and the second web 106 guide the imaging device electrical contacts 301 in the imaging device mounting cavity. The addition of the first rib plate 105 and the second rib plate 106 on both sides of the chip carrier 103 also increases the structural complexity of the chip carrier 103, which is not beneficial to low-cost production.

Further, as shown in fig. 2, in the conventional toner cartridge, the electrical contact pins 302 on the image forming apparatus electrical contacts 301 are perpendicular to the electrical contact surfaces 108 of the chip 107, and a straight line L1 passing through the contact points of the chip 107 with the electrical contact pins 302 on the image forming apparatus electrical contacts 301 and perpendicular to the electrical contact surfaces 108 intersects with a line P1 passing through the axis of the photosensitive drum 122 and the projection of the axis of the positioning post 123 in the axial direction of the photosensitive drum 122. Since the movable amount of the electrical contact 301 of the imaging device is small and the electrical contact pins 302 are oriented perpendicular to the electrical contact surface 108, the powder cartridge can press the electrical contact 301 during the mounting process of the powder cartridge or when the imaging device vibrates, so that the movable amount of the electrical contact 301 is easily forced to exceed the original movable length, and the electrical contact 301 of the imaging device is damaged.

Disclosure of Invention

A first object of the present invention is to provide a powder cartridge in which, when the powder cartridge presses an electrical contact during installation of the powder cartridge or during vibration of an image forming apparatus, the electrical contact pin can slide obliquely while contacting the electrical contact surface, thereby reducing the amount of movement of the electrical contact and avoiding damage to the electrical contact of the image forming apparatus.

A second object of the present invention is to provide another powder cartridge capable of reducing the moving amount of the electrical contacts, avoiding damage to the electrical contacts of the image forming apparatus.

A third object of the present invention is to provide an image forming apparatus having the above-described cartridge.

In order to achieve the first object, the present invention provides a powder cartridge detachably mounted in a mounting cavity of an image forming apparatus, in which an electrical contact pin is provided; the powder box comprises a box body, a chip and a chip seat, wherein the chip seat is arranged on the box body, and the chip is arranged in the chip seat and is in electrical contact with the electric contact pin; the chip seat comprises a mounting groove, the chip is mounted in the mounting groove, an opening is formed in one side of the mounting groove, the electric contact surface of the chip faces the opening, and the electric contact pin and the electric contact surface form an acute angle.

According to the scheme, the chip is obliquely arranged, and even if the powder box extrudes the electric contact in the powder box installation process or when the imaging device vibrates, the electric contact pin can contact the electric contact surface and simultaneously produce oblique sliding due to the fact that the electric contact pin is in a non-vertical state with the electric contact surface of the chip, so that the moving amount of the electric contact is reduced, and damage to the electric contact of the imaging device is avoided.

In a preferred embodiment, the electrical contact pins are arranged near the bottom of the mounting cavity and the chip is arranged obliquely upwards.

In a preferred scheme, the powder box further comprises a rotating piece, wherein the rotating piece extends along the length direction of the box body and is rotatably arranged on the box body, and a positioning column is arranged on the end wall of the box body; the line of projection of the axis of the rotating member and the axis of the positioning post along the axial direction of the rotating member is parallel to the normal of the electrical contact surface.

Therefore, when the connecting line of the projection of the axis of the rotating piece and the axis of the positioning column along the axial direction of the rotating piece is parallel to the normal line of the electric contact surface, the electric contact surface of the chip has an optimal inclination angle, so that the electric contact can be stably and electrically connected with the electric contact while ensuring a small movement amount of the electric contact.

In a preferred scheme, an electric contact limiting groove is formed in the mounting cavity near the bottom, and an electric contact pin is mounted in the electric contact limiting groove; the chip seat also comprises a seat top wall and a seat bottom wall, and an opening is formed between the seat top wall and the seat bottom wall in a surrounding manner; at least one of the upper surface of the top wall of the seat and the lower surface of the bottom wall of the seat is a plane, and one sides of the top wall of the seat and the bottom wall of the seat, which are close to the electric contact surface of the chip, are respectively provided with a guide inclined surface which is in sliding fit with the side wall of the electric contact limiting groove in the direction of inserting the chip seat into the electric contact limiting groove.

From the above, through setting at least one of the upper surface of seat roof and the lower surface of seat diapire to the plane, that is, the upper surface of seat roof and/or the lower surface of seat diapire of chip carrier do not set up gusset or other guiding and positioning structure, can simplify the structure of chip carrier, reduce mould design and manufacturing cost, simultaneously through setting up the guide inclined plane on the chip carrier, can realize the grafting cooperation of chip carrier and electrical contact spacing groove better at the lateral wall sliding fit of powder box installation's in-process guide inclined plane and electrical contact spacing groove, and then realize that chip electrical contact face and electrical contact are connected electrically steadily.

Further, the cartridge includes a drum frame including a frame body portion and a first side extension portion, the frame body portion extending along a length direction of the cartridge, the first side extension portion being disposed at a first end of the frame body portion and extending downward from the frame body portion, and the chip carrier being disposed on the first side extension portion.

Therefore, the chip holder for fixing the chip is arranged on the drum frame, so that when the photosensitive drum needs to be cleaned, the separation mechanism in the imaging device drives the developing unit to move, and in the process of separating the developing roller from the photosensitive drum, the chip holder cannot move because the imaging unit is fixed relative to the imaging device, and after the powder box is installed in the imaging device, the chip electric contact surface is always in stable contact with the imaging device electric connector, so that the chip holder is prevented from being arranged on the movable developing unit, and when the developing unit moves relative to the imaging unit, the chip holder and the chip electric contact surface on the developing unit move, so that the stability of electric contact between the chip electric contact surface and the electric contact of the imaging device is influenced.

Further, in the length direction of the box body, the two sides of the chip seat are provided with guiding inclined planes, and the guiding inclined planes at the two sides of the chip seat are gradually far away from each other from one side close to the opening to one side far away from the opening.

Therefore, the guide inclined plane can be arranged on one side of the chip seat and can also be arranged on two sides of the chip seat, and good guide effect can be realized.

In a preferred embodiment, the base wall of the chip carrier is spaced apart from the base wall of the mounting cavity.

Therefore, the chip seat is not contacted with the bottom wall of the mounting cavity, and a certain distance space is formed between the chip seat and the bottom wall of the mounting cavity, so that the possibility of pollution of the electric contact of the chip is further reduced, and the stability of electric contact of the chip and the imaging equipment is ensured.

In order to achieve the second object, the present invention provides a powder box, comprising a box body, a photosensitive drum, a chip and a chip seat; the photosensitive drums are rotatably arranged on the box body, and positioning columns are arranged on the end walls of the box body; the chip seat is arranged on the box body, and the chip is arranged in the chip seat; the chip seat comprises a mounting groove, the chip is mounted in the mounting groove, an opening is formed in one side of the mounting groove, and the electric contact surface of the chip is arranged towards the opening; the line of projection of the axis of the photosensitive drum and the axis of the positioning post along the axial direction of the photosensitive drum is parallel to the normal line of the electric contact surface.

In order to achieve the third object, the present invention provides an image forming apparatus provided with a mounting chamber in which the above-described powder cartridge is detachably mounted.

Drawings

Fig. 1 is a block diagram of a chip and a chip holder in a conventional compact.

Fig. 2 is a right side view of a conventional compact.

Fig. 3 is a block diagram of a first embodiment of a drive head and a compact of the present invention.

Fig. 4 is a partial construction view of a first embodiment of the compact of the present invention.

Fig. 5 is an exploded view of a first embodiment of the compact of the present invention from a first perspective.

Fig. 6 is an exploded view of a first embodiment of the compact of the present invention from a second perspective.

Fig. 7 is a block diagram of the cooperation of the electrical contact limiting groove and the chip carrier in the first embodiment of the powder box of the present invention.

Fig. 8 is a block diagram of a first view of a chip carrier according to a first embodiment of the invention.

Fig. 9 is a block diagram of a second view of a chip carrier according to a first embodiment of the invention.

Fig. 10 is a schematic diagram of a cooperation structure between a chip holder and a bottom wall of a mounting cavity in a powder box according to a first embodiment of the invention.

Fig. 11 is a right side view of a second embodiment of the compact of the present invention.

Fig. 12 is an enlarged view of a portion of a second embodiment of the compact of the present invention.

Fig. 13 is an exploded view of a chip and a chip holder in a second embodiment of the compact of the present invention.

The invention is further described below with reference to the drawings and examples.

Detailed Description

First embodiment of the compact:

referring to fig. 3 to 6, the cartridge is detachably mounted in an image forming apparatus, the electrophotographic image forming apparatus includes a main body in which a mounting chamber is provided, a transmission head 10 is provided on a side wall of the mounting chamber, the transmission head 10 includes a gear portion 11 and a coupling recess, the gear portion 11 is located on a peripheral wall of the transmission head 10, and the coupling recess is located at an axial end of the transmission head 10.

The cartridge includes a developing unit 2 and a drum unit 3, the developing unit 2 includes a developing frame 21, and a developing roller 22 and a stirring frame (not shown), and a force receiving portion (not shown) is provided at the bottom of one end of the developing frame 21. The drum unit 3 includes a drum frame 31, a photosensitive drum 4 rotatably supported on the drum frame 31, and a cleaning blade 33 mounted on the drum frame 31, both ends of the cleaning blade 33 being supported on the drum frame 31, and blades of the cleaning blade 33 being abutted on the photosensitive drum 4 for cleaning residual powder on the photosensitive drum 4. The drum frame 31 and the developing frame 21 constitute a cartridge body of the toner cartridge, and the developing roller 22, the agitating frame, and the photosensitive drum 4 are rotatably mounted as rotating members on the cartridge body and each extend along the longitudinal direction of the cartridge body.

The developing frame 21 includes a developing frame main body 211 and two end caps 212, the two end caps 212 are respectively provided at both ends of the developing frame main body 211, the two end caps 212 are each provided with a developing hinge portion 213, both ends of the drum frame 31 are each provided with an imaging hinge portion 311, the powder cartridge further includes two positioning pins 12, and one positioning pin 12 sequentially passes through one imaging hinge portion and the developing hinge portion 213 of the same side, thereby realizing hinge of the developing frame 21 and the drum frame 31.

An elastic member such as a spring (not shown) is provided at the top of one end of the drum frame 31 away from the force receiving portion, a biasing member (not shown) is provided in the image forming apparatus, after the biasing member applies a biasing force to the force receiving portion, the developing frame 21 rotates relative to the drum frame 31, the developing roller 22 is separated from the photosensitive drum 4, the developing roller 22 moves to a cleaning position relative to the photosensitive drum 4, and at this time, the spring is forced to be in a compressed state; when the urging member moves reversely and the urging force to the force receiving portion is removed, the spring urges the developing frame 21 to rotate under the action of its own elastic restoring force, the developing roller 22 contacts the photosensitive drum 4, and the developing roller 22 moves to the image forming position with respect to the photosensitive drum 4.

One axial end of the photosensitive drum 4 is provided with a rotational force transmitting assembly 41, one axial end of the developing roller 3 is provided with a developing roller gear 5, an axial end of the agitator is provided with an agitator gear, the cartridge frame 20 includes the developing frame 21 and the drum frame 31, and the rotational force transmitting assembly 41, the agitator gear and the developing roller gear 5 are located on the same side of the cartridge frame 20 to constitute a gear train.

The box frame 20 is provided with a recess 201 near the rotational force transmission assembly 41, the recess 201 is recessed from a first end of the box frame 20 toward a second end of the box frame 20, and the driving head 10 may extend into the recess 201, so that a coupling recess of the driving head 10 is engaged with the rotational force transmission assembly 41 to receive the driving force.

The drum frame 31 includes a frame main body portion 312, a first side extension portion 313 and a second side extension portion 314, the frame main body portion 312 extends along the axial direction of the photosensitive drum 4, the first side extension portion 313 and the second side extension portion 314 are respectively disposed at two ends of the frame main body portion 312 and extend downward from the frame main body portion 312, a chip holder 6 is disposed on the first side extension portion 313, the chip holder 6 and the drum frame 31 are integrally formed, a chip 60 is mounted in the chip holder 6, an electrical contact limiting groove 100 is disposed at a position, close to the bottom, of a mounting cavity of the imaging device, an electrical contact (not shown) is disposed in the electrical contact limiting groove 100, an electrical contact pin is disposed on the electrical contact, and the chip 60 is in electrical contact with the electrical contact pin of the electrical contact.

Referring to fig. 7 to 10, the chip holder 6 includes a mounting groove 61, a holder top wall 62 and a holder bottom wall 63, the chip 60 is mounted in the mounting groove 61, an opening 65 is defined between the holder top wall 62 and the holder bottom wall 63, an electrical contact surface 601 of the chip 60 is disposed toward the opening 65, and an electrical contact pin is disposed near the bottom of the mounting cavity.

The upper surface of the top wall 62 and the lower surface of the bottom wall 63 are both planar, that is, the top wall 62 and the bottom wall 63 of the chip carrier are not provided with rib plates or other guiding and positioning structures, and the sides of the top wall 62 and the bottom wall 63, which are close to the electric contact surface 601 of the chip 60, are provided with guiding inclined planes 64, and the guiding inclined planes 64 are in sliding fit with the side walls 105 of the electric contact limiting grooves 100 in the direction of inserting the chip carrier 6 into the electric contact limiting grooves 100.

In the axial direction of the photosensitive drum 4, the guide slope 64 is located on the side of the chip carrier 6 away from the frame main body portion 312, and the guide slope 64 gradually gets away from the frame main body portion 312 from the side near the opening 65 to the side far from the opening 65.

The base wall 63 of the chip carrier 6 is spaced from the bottom wall 104 of the mounting cavity by a minimum distance H, and the chip carrier 6 is not in contact with the bottom wall of the mounting cavity and forms a distance space therebetween to further reduce the possibility of contamination of the electrical contact surface 601 of the chip 60 on the chip 60.

The first side extension 313 is further provided with a first supporting hole 315 and a second supporting hole 316, the first end of the photosensitive drum 4 is in running fit with the first supporting hole 315, and the chip holder 6 is located below the first supporting hole 315. The second supporting hole 316 is located between the first supporting hole 315 and the chip carrier 6, the first end of the developing roller 22 is rotatably fitted to the second supporting hole 316, and the second end of the developing roller 22 is rotatably connected to the developing frame 21.

The first side extension portion 313 is provided with a first positioning column 317, the second side extension portion 314 is provided with a second positioning column 318, the first positioning column 317 and the second positioning column 318 are coaxially disposed and both extend along the axial direction of the photosensitive drum 4, the first positioning column 317 extends from the outer surface of the first side extension portion 313 in a direction away from the frame main body portion 312, and the second positioning column 318 extends from the outer surface of the second side extension portion 314 in a direction away from the frame main body portion 312. The first positioning column 317 and the second positioning column 318 are used to cooperate with structures on the inner side wall of the mounting cavity to position the powder box when the powder box is mounted to the imaging device.

Second embodiment of powder box:

as a description of the second embodiment of the compact of the present invention, only the differences from the first embodiment of the compact described above will be described below.

Referring to fig. 11 to 13, in the present embodiment, the electrical contact pins 2115 of the electrical contacts 2110 are disposed at an acute angle θ to the electrical contact surface 2601 of the chip 260, and the chip 260 is disposed obliquely upward. The electrical contact pins 2115 are angled at an angle θ from the electrical contact face 2601 that is greater than 0 degrees and less than 90 degrees. Preferably, a line P of projection of the axis of the photosensitive drum 224 and the axis of the second positioning post 2318 on the second side extension 2314 along the axial direction of the photosensitive drum 224 is parallel to the normal L of the electrical contact face 2601.

In this embodiment, the mounting groove 261 is disposed obliquely in a direction parallel to the electrical contact surface 2601 of the chip.

Third embodiment of powder box:

as a description of the third embodiment of the compact of the present invention, only the differences from the first embodiment of the compact described above will be described below.

The bottom of the developing frame is not provided with a force receiving part, the imaging device is not provided with a force application member, but a spring is still arranged between the developing frame and the drum frame, and the developing frame can rotate in a small range relative to the drum frame, so that the developing roller is always abutted with the photosensitive drum, the developing roller is not separated from the photosensitive drum, and a cleaning step is not carried out.

From the above, through setting up the chip slope, the line of the projection of the axis of photosensitive drum and the axis of second reference column along the axial of photosensitive drum is on a parallel with the normal of electric contact surface this moment, in powder box installation or when imaging device shakes, even powder box extrusion electric contact, because be non-perpendicular state between electric contact pin and the chip electric contact surface, electric contact pin can produce the inclined plane and slide when contacting the electric contact surface to reduce the amount of movement of electric contact, avoid leading to the damage of imaging device electric contact. Through setting up the chip carrier that is used for fixed chip on the drum frame, like this, when need clean the sensitization drum, the separating mechanism in the imaging device drives the developing unit motion, the in-process of developing roller and sensitization drum separation, because imaging unit is motionless for imaging device, therefore, the chip carrier also can not take place to remove, in powder box installation to imaging device, chip electric contact surface and imaging device electric joint contact back, just carry out stable contact all the time, thereby avoid the chip carrier to set up on mobilizable developing unit, when imaging unit moves relatively, chip carrier and chip electric contact surface on it remove, and influence the stability of electric contact between chip electric contact surface and the electric contact of imaging device.

Furthermore, the angle of the electrical contact pins to the electrical contact surface may be varied as desired. The chip seat and the drum frame can also be fixedly connected through a fixing piece; or the chip seat and the drum frame are fixedly connected in a welding or clamping way. One of the upper surface of the seat top wall and the lower surface of the seat bottom wall may also be provided as a planar wall. In the axial direction of the photosensitive drum, the guide inclined surface may be located on a side of the chip holder close to the frame main body portion, and the guide inclined surface gradually approaches the frame main body portion from a side close to the opening to a side far from the opening. The guide inclined planes are arranged on the two sides of the chip seat in the axial direction of the photosensitive drum, and the guide inclined planes on the two sides of the chip seat are gradually far away from each other from one side close to the opening to one side far away from the opening. The size of the spacing distance H between the bottom wall of the chip seat and the bottom wall of the mounting cavity can be changed according to the requirement. The chip carrier may also be disposed on the developing frame. The above-described modifications can also achieve the object of the present invention.

Finally, it should be emphasized that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention, but rather that various changes and modifications can be made by those skilled in the art without departing from the spirit and principles of the invention, and any modifications, equivalent substitutions, improvements, etc. are intended to be included within the scope of the present invention.

Claims (9)

1. The powder box is detachably arranged in a mounting cavity of the imaging equipment, and an electric contact pin is arranged in the mounting cavity;

the powder box comprises a box body, a chip and a chip seat, wherein the chip seat is arranged on the box body, and the chip is arranged in the chip seat and is in electrical contact with the electrical contact pin;

the method is characterized in that:

the chip seat comprises a mounting groove, the chip is mounted in the mounting groove, an opening is formed in one side of the mounting groove, an electric contact surface of the chip faces the opening, and the electric contact pin and the electric contact surface form an acute angle.

2. The compact of claim 1, wherein:

the electric contact pins are arranged near the bottom of the mounting cavity, and the chips are arranged obliquely upwards.

3. The compact of claim 1, wherein:

the powder box further comprises a rotating piece which extends along the length direction of the box body and is rotatably arranged on the box body, and a positioning column is arranged on the end wall of the box body;

the line connecting the axis of the rotating member and the projection of the axis of the positioning post along the axial direction of the rotating member is parallel to the normal line of the electrical contact surface.

4. A compact according to any one of claims 1 to 3, wherein:

an electric contact limiting groove is formed in the mounting cavity near the bottom, and the electric contact pin is mounted in the electric contact limiting groove;

the chip seat also comprises a seat top wall and a seat bottom wall, wherein the opening is formed by surrounding the seat top wall and the seat bottom wall;

at least one of the upper surface of the seat top wall and the lower surface of the seat bottom wall is a plane, one side, close to the electric contact surface of the chip, of the seat top wall and the seat bottom wall is provided with a guide inclined surface, and the guide inclined surface is in sliding fit with the side wall of the electric contact limiting groove in the direction of inserting the chip seat into the electric contact limiting groove.

5. The compact of claim 4, wherein:

the box body comprises a drum frame, the drum frame comprises a frame main body part and a first side extension part, the frame main body part extends along the length direction of the box body, the first side extension part is arranged at the first end of the frame main body part and extends downwards from the frame main body part, and the chip holder is arranged on the first side extension part.

6. The compact of claim 4, wherein:

on the length direction of the box body, the two sides of the chip seat are respectively provided with the guide inclined planes, and the guide inclined planes on the two sides of the chip seat are gradually far away from each other from one side close to the opening to one side far away from the opening.

7. A compact according to any one of claims 1 to 3, wherein:

the bottom wall of the chip seat is arranged at intervals with the bottom wall of the mounting cavity.

8. The powder box comprises a box body, a photosensitive drum, a chip and a chip seat;

the photosensitive drums are rotatably arranged on the box body, and positioning columns are arranged on the end walls of the box body;

the chip seat is arranged on the box body, and the chip is arranged in the chip seat;

the method is characterized in that:

the chip seat comprises a mounting groove, the chip is mounted in the mounting groove, an opening is formed in one side of the mounting groove, and an electric contact surface of the chip is arranged towards the opening;

the line connecting the axis of the photosensitive drum and the projection of the axis of the positioning post along the axial direction of the photosensitive drum is parallel to the normal line of the electric contact surface.

9. An image forming apparatus provided with a mounting chamber, wherein the cartridge according to any one of claims 1 to 8 is detachably mounted in the mounting chamber.