WO2015014252A1

WO2015014252A1 - Detection device for developer box

Info

Publication number: WO2015014252A1
Application number: PCT/CN2014/083121
Authority: WO
Inventors: 苏健强
Original assignee: 珠海天威飞马打印耗材有限公司
Priority date: 2013-08-02
Filing date: 2014-07-28
Publication date: 2015-02-05
Also published as: CN103472696A; CN103472696B

Abstract

A detection device (7, 8) for a developer box, comprising a drive circuit controller (71, 81), an execution unit (72, 82) and a trigger element (73, 83) used for contacting with a sensor (20), wherein the trigger element (73, 83) is connected to the execution unit (72, 82), and the drive circuit controller (71, 81) is connected to the execution unit (72, 82). In one embodiment, the execution unit (72, 82) is a micro motor (72), and the trigger element (73, 83) is a cam (73) capable of being driven to rotate by the micro motor (72); and in another embodiment, the execution unit (72, 82) is a solenoid mechanism (82), and the trigger element (73, 83) is a movable screw rod (83) capable of reciprocatingly moving along the axial direction thereof under the driving action of the solenoid mechanism (82).

Description

Developer cartridge detection device

Technical field

The present invention relates to the field of image forming technology, and in particular to a detecting device for a developer cartridge of an image forming apparatus such as a laser printer or a copying machine for cooperating with a sensor of an image forming apparatus to detect a use state of the developer cartridge. The present application claims priority to Chinese Patent Application No. 201310335506.3, entitled "Detecting Device for Developer Cartridge", filed on August 2, 2013, the entire contents of which is incorporated herein by reference.

Background technique

In a laser-type image forming apparatus such as a laser printer, a copying machine, or a digital all-in-one, a developing device that develops an electrostatic latent image formed on a photosensitive drum is provided, and the developing device applies a developer to the electrostatic latent image for development. The developer consumed for development is generally provided by a developer cartridge, and after the developer in the developer cartridge is used up, a new developer cartridge is replaced.

The partial integral and split developer cartridges are provided with use state detecting means for cooperating with sensors on the image forming apparatus to detect whether the developer cartridge being used is new. For example, the Chinese Utility Model Patent No. CN200720060742.9 discloses a developer cartridge provided with a use state detecting device, which includes a powder silo for accommodating the developer, a stirring frame, a powder feeding roller, a developing roller, and a powder discharging knife. And, the end wall on one side of the developer cartridge is provided with a gear transmission mechanism for transmitting the driving force input from the image forming apparatus to the agitating frame, the powder feeding roller, and the developing roller for operation. In a developer cartridge having the above structure, an end wall provided with a gear transmission mechanism is further provided with a detecting means for identifying whether the developer cartridge has undergone use, and triggering corresponding use in the image forming apparatus. Status sensor. The detecting device mainly comprises a detecting wheel and a torsion spring. The detecting wheel is rotatably supported on a supporting shaft fixedly disposed on an outer surface of the end wall, and is fixed on an end surface of the detecting wheel axially opposite to the end wall. At least two triggering elements, the torsion spring is sleeved on the support shaft, and the outer end of the biasing arm at one end of the spiral intermediate portion forms a hook portion which is hooked from the detecting wheel to the torsion spring The other end of the force-receiving arm projecting from the end face is pressed against the baffle formed around the support shaft. Before the developer cartridge is loaded into the image forming apparatus, the torsion spring is in a taut state, and the detecting wheel is locked by the gear transmission mechanism. When the developer cartridge is loaded into the image forming apparatus, the first gear in the gear transmission mechanism rotates the detecting wheel by an angle with the toothed projection on the detecting wheel, and the torsion spring releases the elastic force to the detecting wheel. The rotation continues in the original direction, and when the detecting wheel rotates, the corresponding use state sensor in the image forming apparatus is triggered by its triggering element, so that the image forming apparatus can recognize whether the developer cartridge has experienced the use state.

The above detecting device needs to cooperate with the driving connector on the developer cartridge. Since it is a mechanical driving detection, different mechanical structures need to be made for different timing detection settings, and timing problems are required to be assembled with the driving connector. In addition, because of the mechanical cooperation, the structure is complicated, and it is more troublesome to reuse the developer cartridge. The entire component needs to be disassembled and reinstalled and reset, and even some fixed connection structures cannot do this, so the entire detection device is complicated and manufactured. And the installation accuracy is high, so the cost is high, and it is not universal and the replacement is complicated.

technical problem

The technical problem to be solved by the present invention is to provide a developer cartridge detecting device having more reliable performance. After the new developer cartridge having such a detecting device is loaded into the image forming apparatus, it can cooperate with the image forming device sensor to realize accurate electronic Delayed interactive detection.

Technical solution

In order to solve the above technical problems, the present invention adopts the following technical solution: a detecting device for designing a developer cartridge for cooperating with a sensor of an image forming apparatus for detecting a use state of a developer cartridge, the detecting device including a driving circuit control a triggering element for contacting the sensor, the triggering element being coupled to the execution unit, the drive circuit controller being in controllable connection with the execution unit.

According to an embodiment of the invention, the execution unit is a micromotor, and the triggering element is a cam that can be rotated by the micromotor.

According to another embodiment of the present invention, the execution unit is a solenoid mechanism, and the triggering element is a movable screw that is reciprocally movable in the axial direction thereof under the driving action of the solenoid mechanism. Further, the solenoid mechanism includes a fixing base, a magnet, a spring coil and a screw, the fixing base is connected to the driving circuit controller, the magnet is disposed in the fixing seat, and the screw is fixed in the An inner end of the movable screw opposite to the magnet, the spring coil being sleeved between the flange of the movable screw and mounted on the movable screw and the fixing seat, the spring coil and the The drive circuit controller is electrically connected.

Beneficial effect

The developer cartridge detecting device of the present invention controls the cooperation between the triggering component and the image forming device sensor through the driving circuit controller during operation, ensures the accuracy of the contact between the triggering component and the sensor, and prolongs the contact time between the triggering component and the sensor. To realize the delay detection of the presence of the sensor, the central processing unit of the laser printer enters the counting working state, and records the working history of the developer cartridge. The invention is driven by electronic means, so the structure is simple, the performance is more reliable, and the structure can be universally realized. The timing difference of different image forming apparatuses can be solved by software, and the structure thereof is greatly simplified, and the detection is further performed. The device can be easily disassembled and re-adjusted between the device and the developer cartridge, and the recycled toner cartridge can be easily recycled.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view showing the structure of a developer cartridge having a detecting device according to a first embodiment of the present invention.

Figure 2 is a schematic view showing the structure of the end portion of the developer cartridge shown in Figure 1 after the shield is removed.

Fig. 3 is a schematic view showing an initial state of the detecting device shown in Fig. 2.

Figure 4 is a schematic view showing the operating state of the detecting device shown in Figure 2.

Fig. 5 is a schematic view showing the operation end state of the detecting device shown in Fig. 2.

Fig. 6 is a perspective view showing the initial state of the detecting device of the second embodiment of the present invention.

Figure 7 is an axial view of the initial state of the detecting device shown in Figure 6.

Figure 8 is a cross-sectional view showing the initial state of the detecting device shown in Figure 6.

Fig. 9 is a perspective view showing a contracted state of the detecting device according to the second embodiment of the present invention.

Figure 10 is an axial view showing the state of contraction of the detecting device shown in Figure 9.

Figure 11 is a cross-sectional view showing the state in which the detecting device shown in Figure 9 is in a contracted state.

Embodiments of the invention

Various embodiments of the present invention will be described in detail below, the embodiments of which are illustrated in the accompanying drawings and described below. While the invention will be described in conjunction with the exemplary embodiments, it is understood that the invention is not limited to these exemplary embodiments. On the contrary, the invention includes not only these embodiments but also various modifications and improvements.

Embodiment 1

1 and 2 show a developer cartridge having a detecting device according to a first embodiment of the present invention, which is applied to an image forming apparatus such as a laser printer, and includes a first end wall 11 and a second end wall 12 And a casing 1 surrounded by a plurality of side walls, the casing 1 being internally divided into a powder storage bin 10 for storing a predetermined amount of developer and for storing a certain developer and performing adsorption of the developer on the developing roller 2 therein (only shown a developing chamber on the surface of the end portion, a mixing rack 3 is disposed in the powder storage chamber 10, and a powder feeding roller 4 for supplying the developer to the developing roller 2 is disposed between the powder storage chamber 10 and the developing chamber, and the developing roller 2 and the powder feeding roller 4 are rotatably Supported on both end walls of the casing 1, a developing knife (not shown) for adjusting the thickness of the developer layer on the surface of the developing roller is provided above the developing roller 2. The first end wall 11 of the casing 1 is provided with a gear transmission mechanism 6 for transmitting the rotational torque input by the laser printer to the agitating frame 3, the powder feeding roller 4 and the developing roller 2 so that they respectively perform stirring, powder feeding and For the development work, the agitator 3 receives the driving force by meshing with the gear mechanism 6 by the agitator gear 31 fixed at its end. A shield 5 is disposed outside the gear transmission mechanism 6, and the shield 5 can be fixed to the first end wall 11 by bolts 51 or a snap fastener, etc., thereby enclosing the gear transmission mechanism 6 by the shield 5 and the first In the inner cavity surrounded by the end wall 11, the gear transmission mechanism 6 is prevented from being exposed to affect the viewing and the influence of flying dust. At the same time, the surface of the shield 5 itself facing the first end wall 11 is in sliding contact with the corresponding gear axial end face in the gear transmission mechanism 6, and the gear transmission mechanism 6 is axially positioned to avoid the gear transmission mechanism 6. The gears are detached from the corresponding gear shafts to cause printing defects and the like. A detection device 7 is also provided between the first end wall 11 and the shield 5 for triggering a corresponding use state sensor 20 in the laser printer for the purpose of identifying whether the developer cartridge has experienced a use condition.

3 to 5, the detecting device 7 includes a driving circuit controller 71, a micro motor 72, and a fan-shaped cam 73. The driving circuit controller 71 is connected to the micro motor 72, and the cam 73 is connected to the output end of the micro motor 72. The micromotor 72 is rotated for contact with the sensor 20 of the image forming apparatus. In the initial state, after the developer cartridge is loaded into the laser printer, the cam 73 on the developer cartridge comes into contact with the sensor 20 of the image forming apparatus, causing the contact end of the sensor 20 to be contacted and pressed, by artificially triggering the drive circuit controller 71. The control switch (or the automatic delay structure control switch) is then rotated by the micro motor 72 under the operation command of the drive circuit controller 71, thereby rotating the cam 73 to achieve contact with the sensor 20 of the image forming apparatus as the cam 73 rotates. Implement timing detection.

The detecting device 7 of the above structure controls the cooperation of the cam 73 and the sensor 20 through the driving circuit controller 71 during operation, ensures the accuracy of the contact of the cam 73 with the sensor 20, and prolongs the contact time of the cam 73 with the sensor 20. The delay detection of the sensor 20 is realized, so that the central processing unit of the laser printer enters the counting working state, and the working history of the developer cartridge is recorded. The detecting device 7 is driven by electronic means, so the structure is simple, the performance is more reliable, and the structure can be universally realized. The timing difference of different image forming devices can be solved by software, and the structure thereof is greatly simplified. In addition, the detection device 7 and the developer cartridge can be easily disassembled and re-adjusted, and the recycled toner cartridge can be conveniently recycled.

Embodiment 2

Referring to FIG. 6, the detecting device 8 of the second embodiment of the present invention includes a driving circuit controller 81, a solenoid mechanism 82 and a movable screw 83. The driving circuit controller 81 is connected with the solenoid mechanism 82, and the movable screw 83 can be connected. Under the driving action of the solenoid mechanism 82, it reciprocates in its own axial direction for selectively contacting the sensor 20 of the image forming apparatus. The driving circuit controller 81 includes a driving circuit base 811 and a driving circuit 812 located therein. The solenoid mechanism 82 includes a fixing base 821, a magnet 822, a spring coil 823 and a screw 824. The fixing base 821 is connected to the driving circuit base 811, and the magnet The 822 is disposed in the fixing base 821, the screw 824 is fixed to the inner end of the movable screw 83 and opposite to the magnet 822, the movable screw 83 is a large-head screw, and the spring coil 823 is sleeved on the movable screw 83 and mounted on the movable screw Between the large flange on the 83 and the mount 821, the spring coil 823 is electrically coupled to the drive circuit 812 via a power cord 84.

In the initial state, after the developer cartridge is loaded into the laser printer, the movable screw 83 is brought into contact with the contact end of the sensor 20 on the image forming apparatus to be pressed, triggering the detection of the image forming apparatus to start, under the action of the drive circuit 812, the spring coil 823 and The movable screw 83 generates an electromagnetic force, and generates an anisotropic suction force with the magnet 822 in the fixed seat 821, so that the movable screw 83 rapidly compresses the spring coil 823, and the movable screw 83 contracts. The movable screw 83 is separated from the sensor 20 of the image forming apparatus, and by setting the time of the counter on the drive circuit 812, the time during which the detecting device 8 is in contact with the sensor 20 is ensured, and precise time control is realized.

The power supply electrode of the drive circuit 812 of the above detecting device 8 can be powered by a battery, or can be powered by a voltage regulating element connected to the developer cartridge. The timing adjustment on the detecting device 8 can be adjusted to be specific and versatile according to the requirements of different developer cartridges and image forming apparatuses.

Industrial applicability

The detecting device of the developer cartridge of the present invention can be industrially manufactured or used, and has industrial applicability.

Claims

a detecting device of the developer cartridge for cooperating with a sensor of the image forming apparatus to detect a use state of the developer cartridge, characterized in that the detecting device includes a driving circuit controller, an executing unit, and a contact with the sensor a triggering element connected to the execution unit, the drive circuit controller being in control connection with the execution unit.
A detecting device for a developer cartridge according to claim 1, wherein said actuator unit is a micro motor, and said trigger member is a cam that can be rotated by said micro motor.
A detecting device for a developer cartridge according to claim 1, wherein said actuator unit is a solenoid mechanism, and said triggering member is reciprocally rotatable in the axial direction thereof under the driving action of said solenoid mechanism Moving movable screw.
A detecting device for a developer cartridge according to claim 3, wherein said solenoid mechanism comprises a fixing base, a magnet, a spring coil and a screw, said fixing base being connected to said driving circuit controller, said magnet Provided in the fixing seat, the screw is fixed at an inner end of the movable screw and opposite to the magnet, and the spring coil is sleeved on the movable screw and is mounted on the movable screw The spring coil is electrically connected to the drive circuit controller between the rim and the mount.