Control chip, control method, storage medium and program product

Abstract

According to the control chip, the control method, the storage medium and the program product provided by the embodiment of the invention, the control chip is electrically connected with a fixing device, the control chip comprises a fixing control module and a main control module, and the main control module is configured to read a current operation type; the fixing control module comprises a first protection circuit, a second protection circuit and an execution circuit; when the received temperature detection signal is greater than or equal to a first preset value, the first protection circuit sends a first preposed signal to the execution circuit; the second protection circuit is configured to send a second pre-signal to the execution circuit when the received temperature detection signal is greater than or equal to a second preset value; the execution circuit is configured to execute protection control on the fuser when the first preamble signal is received and the current job type is the first job type, or the execution circuit is further configured to execute protection control on the fuser when the second preamble signal is received. According to the invention, the printer can work in a safe temperature range through a double control strategy; and the control signal transmission time is reduced.

Description

Technical Field

[0001] The present application relates to the field of over-temperature protection for fixing, and in particular to a control chip, a control method, a storage medium and a program product. Background Art

[0002] The fixing process of a laser printer is to fix the toner image formed on the printing paper on the paper by heating and pressurizing. This process is mainly completed by the fuser, which is usually composed of a heating roller and a pressure roller. Through the heating and pressurizing of the two rollers, the toner is melted and immersed in the paper, thus forming a permanent image on the paper. Among them, the main component of "toner" is resin. In order to melt the toner, the fixing heating temperature usually needs to reach above 150°C. However, when the fixing heating function is abnormal, such as continuous heating or the heating temperature exceeds a certain value, the printed paper may burn and cause a safety accident.

[0003] Therefore, it is necessary to set a protection circuit in the fuser to avoid abnormal temperature. The traditional fuser over-temperature protection control compares the collected fuser temperature value with the over-temperature protection threshold through the ADC module. When the fuser temperature exceeds the over-temperature protection threshold for a period longer than the filtering time, the fuser will be turned off and the heating will stop.

[0004] In the process of conceiving and realizing the present application, the inventors found that there are at least the following problems: the protection measures for the fuser in the existing solution are too simple and the over-temperature response speed is slow. Summary of the invention

[0005] The embodiments of the present application provide a control chip, a control method, a storage medium and a program product to solve the problem that the fuser protection measure is single and the response speed is slow.

[0006] In a first aspect, an embodiment of the present application provides a control chip, which is electrically connected to a fuser, and includes: a fuser control module and a main control module, wherein:

[0007] The main control module is configured to read the current job type;

[0008] The fixing control module includes: a first protection circuit, a second protection circuit and an execution circuit;

[0009] The first protection circuit is configured to send a first pre-signal to the execution circuit when the received temperature detection signal is greater than or equal to a first preset value;

[0010] The second protection circuit is configured to send a second pre-signal to the execution circuit when the received temperature detection signal is greater than or equal to a second preset value; the second preset value is greater than the first preset value;

[0011] The execution circuit is configured to execute protection control on the fuser when receiving the first pre-set signal and the current job type is the first job type; the execution circuit is also configured to execute protection control on the fuser when receiving the second pre-set signal;

[0012] When the main control module reads the second preamble signal, it transmits an imaging stop signal to the imaging module to control the imaging module to stop imaging.

[0013] In one of the embodiments, the fixing control module further includes a third protection circuit, and the third protection circuit is configured to send a third pre-signal to the execution circuit when the received temperature detection signal is greater than or equal to a third preset value;

[0014] The execution circuit is configured to execute protection control on the fuser when receiving the third preceding signal.

[0015] In one embodiment, the execution circuit is a logic gate circuit.

[0016] In one embodiment, the main control module is configured to determine the current job type according to the paper type specified when the job is issued.

[0017] In one of the embodiments, the control chip further includes a bus, and the fixing control module includes a register circuit;

[0018] The second protection circuit is configured to store a second pre-signal in the register circuit when the received temperature detection signal is higher than a second preset value. After the main control module reads the second pre-signal through the bus, it transmits an imaging stop signal to the imaging module to control the imaging module to stop imaging.

[0019] In a second aspect, an embodiment of the present application further provides a control method, the method comprising:

[0020] receiving a temperature detection signal;

[0021] If the temperature detection signal is greater than or equal to the first preset value, a first pre-set signal is sent to the execution circuit; the first pre-set signal is used to control the execution circuit to perform protection control on the fuser;

[0022] If the temperature detection signal is greater than or equal to the second preset value, a second pre-set signal is sent to the execution circuit, and the second pre-set signal is used to control the execution circuit to perform protection control on the fuser.

[0023] In one embodiment, if the temperature detection signal is greater than or equal to a first preset value, a first pre-signal is sent to the execution circuit; specifically comprising:

[0024] The duration of obtaining the temperature detection signal being greater than or equal to the first preset value is defined as the first duration;

[0025] If the first duration is greater than or equal to a first preset time, a first pre-signal is sent to the execution circuit, wherein the first preset time is associated with the current job type.

[0026] In one embodiment, the method further comprises:

[0027] If the temperature detection signal is greater than or equal to the third preset value, the duration of the temperature detection signal being greater than or equal to the third preset value is obtained as the second duration;

[0028] If the second duration is greater than or equal to the second preset time, a third pre-set signal is sent to the execution circuit; the third pre-set signal is used to control the execution circuit to perform protection control on the fuser.

[0029] In a third aspect, an embodiment of the present application further provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement any of the above-mentioned control methods.

[0030] In a fourth aspect, an embodiment of the present application further provides a computer program product, including a computer program, which implements any of the above-mentioned control methods when executed by a processor.

[0031] The control chip, control method, storage medium and program product provided by the embodiments of the present application, the control chip is electrically connected to the fuser, including: a fuser control module, a main control module, wherein: the main control module is configured to read the current job type; the fuser control module includes: a first protection circuit, a second protection circuit and an execution circuit; the first protection circuit is configured to send a first pre-signal to the execution circuit when the received temperature detection signal is greater than or equal to a first preset value; the second protection circuit is configured to send a second pre-signal to the execution circuit when the received temperature detection signal is greater than or equal to a second preset value; the second preset value is greater than the first preset value; the execution circuit is configured to perform protection control on the fuser when the first pre-signal is received and the current job type is the first job type; the execution circuit is also configured to perform protection control on the fuser when the second pre-signal is received; when the main control module reads the second pre-signal, it transmits an imaging stop signal to the imaging module to control the imaging module to stop imaging. The fuser is protected by the first protection circuit and the second protection circuit, so that the printer can work within a safe temperature range; secondly, the protection circuit is built into the chip, which has a fast response and reduces the time for control signal transmission, making it easier for the control chip to control the imaging module to stop imaging in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0033] Figure 1 A schematic diagram of the structure of a control chip provided in one embodiment of the present application;

[0034] Figure 2 A schematic diagram of the structure of a control chip provided in one embodiment of the present application;

[0035] Figure 3 A flowchart of a control method provided in one embodiment of the present application;

[0036] Figure 4 A flowchart of a control method provided in one embodiment of the present application;

[0037] Figure 5 A flowchart of a control method provided in one embodiment of the present application;

[0038] Figure 6 A flow chart of a control method provided by another embodiment of the present application;

[0039] Figure 7 This is a schematic diagram of the structure of the control chip provided in this application.

[0040] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0041] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0042] The fixing process of a laser printer is to fix the toner image formed on the printing paper on the paper by heating and pressurizing. This process is mainly completed by the fuser, which is usually composed of a heating roller and a pressure roller. Through the heating and pressurizing of the two rollers, the toner is melted and immersed in the paper, thus forming a permanent image on the paper. Among them, the main component of "toner" is resin. In order to melt the toner, the fixing heating temperature usually needs to reach above 150°C. However, when the fixing heating function is abnormal, such as continuous heating or the heating temperature exceeds a certain value, the heating roller and the pressure roller may stick together, and the printed paper may burn, causing a safety accident.

[0043] Therefore, it is necessary to set a protection circuit in the fuser to avoid abnormal temperature. The traditional fuser over-temperature protection control compares the collected fuser temperature value with the over-temperature protection threshold through the ADC module. When the fuser temperature exceeds the over-temperature protection threshold for a period longer than the filtering time, the fuser will be turned off and the heating will stop.

[0044] In combination with the above scenarios, it can be seen that in the prior art, there are technical problems that the protection measures for the fuser are too simple and the over-temperature response speed is slow.

[0045] The control chip provided in the embodiment of the present application is electrically connected to the fuser, and includes: a fuser control module and a main control module, wherein: the main control module is configured to read the current job type; the fuser control module includes: a first protection circuit, a second protection circuit and an execution circuit; the first protection circuit is configured to send a first pre-signal to the execution circuit when the received temperature detection signal is greater than or equal to a first preset value; the second protection circuit is configured to send a second pre-signal to the execution circuit when the received temperature detection signal is greater than or equal to a second preset value; the second preset value is greater than the first preset value; the execution circuit is configured to perform protection control on the fuser when the first pre-signal is received and the current job type is the first job type; the execution circuit is also configured to perform protection control on the fuser when the second pre-signal is received; when the main control module reads the second pre-signal, it transmits an imaging stop signal to the imaging module to control the imaging module to stop imaging. The fuser is protected by the first protection circuit and the second protection circuit, so that the printer can work within a safe temperature range; secondly, the protection circuit is built into the chip, which has a fast response and reduces the time for control signal transmission, making it easier for the control chip to control the imaging module to stop imaging in time.

[0046] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0047] like Figure 1 As shown, Figure 1A schematic diagram of the structure of a control chip provided in an embodiment of the present application. The control chip is electrically connected to the fuser, and the control chip includes: a fuser control module and a main control module, wherein: the main control module is configured to read the current job type; the fuser control module includes: a first protection circuit, a second protection circuit and an execution circuit; the first protection circuit is configured to send a first pre-signal to the execution circuit when the received temperature detection signal is greater than or equal to a first preset value; the second protection circuit is configured to send a second pre-signal to the execution circuit when the received temperature detection signal is greater than or equal to a second preset value; the second preset value is greater than the first preset value; the execution circuit is configured to perform protection control on the fuser when the first pre-signal is received and the current job type is the first job type; the execution circuit is also configured to perform protection control on the fuser when the second pre-signal is received; when the main control module reads the second pre-signal, it transmits an imaging stop signal to the imaging module to control the imaging module to stop imaging.

[0048] Specifically, the temperature detection signal is used to determine the temperature of the fuser, and the execution circuit is configured to perform protection control on the fuser when the first pre-signal is received and the current job type is the first job type; it is also configured to perform protection control on the fuser when the second pre-signal is received; when the main control module reads the second pre-signal, it transmits an imaging stop signal to the imaging module to control the imaging module to stop imaging. Through the above embodiments, the present invention can flexibly perform temperature control according to the temperature of the fuser and the current job type, thereby effectively preventing the fuser from overheating and protecting the safe operation of the equipment. The fuser is protected by the first protection circuit and the second protection circuit, so that the printer can work within a safe temperature range; secondly, the protection circuit is built into the chip, which has a fast response and reduces the time for controlling the signal transmission, so that the control chip can control the imaging module to stop imaging in time.

[0049] Optionally, the present application can detect the temperature detection signal of the fuser through a temperature sensor and send the temperature detection signal to the fuser control module. The temperature sensor in this embodiment is arranged outside the control chip, and the temperature sensor is installed inside or near the fuser to detect the temperature of the fuser in real time.

[0050] In one embodiment, if Figure 2 As shown, Figure 2 The structure diagram of the control chip provided by an embodiment of the present application is as follows. The fixing control module further includes a third protection circuit, which is configured to send a third pre-signal to the execution circuit when the received temperature detection signal is greater than or equal to a third preset value.

[0051] The execution circuit is configured to execute protection control on the fuser when receiving the third preceding signal.

[0052] Specifically, when the temperature of the fuser is greater than or equal to the third preset value, the third protection circuit sends a third pre-set signal to the execution circuit. When the execution circuit receives the third pre-set signal, it will turn on the protection of the fuser, control the fuser to turn off, and then stop the ongoing printing work of the printer.

[0053] Optionally, the third protection circuit is an ADC over-temperature protection circuit, wherein the third preset value < the first preset value < the second preset value. The first preset value, the second preset value and the third preset value can be determined according to actual conditions.

[0054] In one embodiment, the control chip also includes a bus, and the fixing control module includes a register circuit; the second protection circuit is configured to register a second pre-signal to the register circuit when the received temperature detection signal is higher than a second preset value, and after the main control module reads the second pre-signal through the bus, it transmits an imaging stop signal to the imaging module to control the imaging module to stop imaging.

[0055] In one embodiment, see Figure 2 The control chip also includes a first firmware and a second firmware, wherein the first firmware is used to store a first preset value and a third preset value or set a fixing protection start value. When the first protection circuit and the third protection circuit receive a temperature detection signal, they determine whether to start protection according to the first preset value and the third preset value stored in the first firmware. If the first protection circuit is configured to send a first preamble signal to the execution circuit and start protection when the received temperature detection signal is greater than or equal to the first preset value; if the third protection circuit is configured to send a third preamble signal to the execution circuit and start protection when the received temperature detection signal is greater than or equal to the third preset value.

[0056] The register circuit is the second firmware in the figure. If the second protection circuit detects that the temperature detection signal is higher than the second preset value, it directly controls the fuser to be turned off. When the fuser is turned off, the second pre-signal is registered to the second firmware. After the main control module reads the second pre-signal through the bus, it transmits an imaging stop signal to the imaging module to control the imaging module to stop imaging. This avoids the problem that after the fuser stops working, the imaging module continues to perform the imaging process and outputs an insufficiently fixed toner image, causing the image quality to deteriorate.

[0057] In one embodiment, the execution circuit is a logic gate circuit.

[0058] Specifically, the logic gate circuit is a switch or a relay, which controls the fuser to stop working by disconnecting the switch of the circuit where the fuser is located or disconnecting the power supply circuit of the fuser.

[0059] In one embodiment, the main control module is configured to determine the current job type according to the paper type specified when the job is issued.

[0060] Optionally, if the current job type indicates that the job needs to be heated to a higher temperature, the execution circuit does not turn on the protection control of the fuser. The paper type will affect the heating temperature of the fuser. If the heating temperature is not enough, the toner cannot be fully fixed, which will cause imaging quality problems. The paper type includes the thickness of the paper and the size of the paper, both of which will affect the heating temperature of the fuser. Therefore, the first preset value is associated with the current job type or paper type, and the first preset value can be adjusted according to the current job type or paper type.

[0061] This application can determine whether to turn on the protection control of the fuser according to the current job type or paper type, so as to avoid the control chip triggering protection when the toner is not fully fixed when fixing thick paper or large-size paper.

[0062] In a second aspect, the present application also provides a control method, which is applied to the above-mentioned control chip, such as Figure 3 As shown, Figure 3 This is a flowchart of a control method provided in an embodiment of the present application. The method comprises the following steps:

[0063] Step S302: receiving a temperature detection signal.

[0064] Specifically, the temperature sensor is installed inside or near the fuser to detect the temperature of the fuser in real time. The temperature sensor generates a temperature detection signal that reflects the current temperature information of the fuser. The control chip receives the temperature detection signal sent by the temperature sensor, and determines whether the temperature of the fuser is within a preset range based on the temperature detection signal, and performs a corresponding temperature adjustment mechanism. If the temperature of the fuser exceeds the preset range, the control chip will trigger the corresponding temperature adjustment mechanism to achieve precise control to prevent the temperature of the fuser from being too high and causing the paper to burn.

[0065] Step S304: If the temperature detection signal is greater than or equal to the first preset value, a first pre-signal is sent to the execution circuit; the first pre-signal is used to control the execution circuit to perform protection control on the fuser.

[0066] Specifically, the first protection circuit sends a first pre-signal to the execution circuit when the temperature detection signal is greater than or equal to a first preset value. The execution circuit is configured to perform protection control on the fuser, i.e., control to shut down the fuser, only when the first pre-signal is received and the current job type is the first job type.

[0067] Step S306: If the temperature detection signal is greater than or equal to the second preset value, a second pre-set signal is sent to the execution circuit, and the second pre-set signal is used to control the execution circuit to perform protection control on the fuser.

[0068] Specifically, the second preset value is set as the upper limit of the safe temperature of the fuser. When the temperature detection signal is greater than or equal to the second preset value, there is no need to set a waiting time. The second protection circuit directly sends a second pre-signal to the execution circuit to control the execution circuit to stop the fuser. At the same time, the second pre-signal is registered to the second firmware. After the main control module reads the second pre-signal through the bus, it transmits an imaging stop signal to the imaging module to control the imaging module to stop imaging. This avoids the problem that after the fuser stops working, the imaging module continues to execute the imaging process to output an insufficiently fixed toner image, causing the image quality to deteriorate.

[0069] The present application sets up a double protection mechanism by utilizing a first protection circuit and a second protection circuit. The response speed of the second protection circuit is greater than the response speed of the first protection circuit. When overtemperature of the fuser is detected, the fuser and the imaging module are shut down in time to prevent the printer from continuing to work without fuser heating, and the toner cannot be melted on the paper, resulting in unclear images and toner contamination.

[0070] In one embodiment, step S304 specifically includes the following steps: Figure 4 As shown, Figure 4 A flow chart of a control method provided in an embodiment of the present application:

[0071] Step S402: Acquire a duration in which the temperature detection signal is greater than or equal to a first preset value as a first duration.

[0072] Step S404: If the first duration is greater than or equal to a first preset time, a first pre-signal is sent to the execution circuit, wherein the first preset time is associated with the current job type.

[0073] Optionally, the first preset time is set according to the filter time of the temperature detection signal and the current job type (paper type). Because the thickness and size of the paper will affect the heating temperature of the fuser, the first preset time can be set according to the current job type. If the paper is too thick or the size is large, the first preset time can be appropriately increased. The first preset time is set according to the specific situation to avoid accidental closure of the fuser due to the current job type, which affects the printing job.

[0074] Specifically, the traditional fuser over-temperature protection control compares the collected fuser temperature value with the over-temperature protection threshold through the ADC module. When the over-temperature state time exceeds the over-temperature signal filtering time, the fuser is turned off and the heating is stopped. This method is single and the over-temperature response speed is slow. The embodiment of the present application adds a control strategy corresponding to the first protection circuit on the basis of ADC over-temperature control, which can more accurately control the temperature of the fuser and avoid the fuser being shut down due to mismeasurement.

[0075] In one embodiment, the method further comprises the following steps: Figure 5 As shown, Figure 5 A flow chart of a control method provided in an embodiment of the present application:

[0076] Step S502: If the temperature detection signal is greater than or equal to the third preset value, the duration during which the temperature detection signal is greater than or equal to the third preset value is obtained as the second duration.

[0077] Step S504: If the second duration is greater than or equal to the second preset time, a third pre-set signal is sent to the execution circuit; the third pre-set signal is used to control the execution circuit to perform protection control on the fuser.

[0078] Optionally, the second preset time is set according to the filter time of the temperature detection signal and the current job type (paper type). Because the thickness and size of the paper will affect the heating temperature of the fuser, the second preset time can be set according to the current job type. If the paper is too thick or the size is large, the second preset time can be appropriately increased. The second preset time is set according to the specific situation to avoid accidental closure of the fuser due to the current job type, which affects the printing job.

[0079] The present application provides a control method, which is applied to the above-mentioned control chip, such as Figure 6 As shown, Figure 6 This is a flow chart of a control method provided by another embodiment of the present application, the method comprising the following steps:

[0080] When the fuser starts to work, the protection process of the first protection circuit is that the first firmware controls the first over-temperature detection function switch. If the detection function is turned on, the first over-temperature detection is started inside the control chip. When it is detected that the output level of the first protection circuit is a low level, that is, the temperature detection signal is greater than or equal to the first preset value, it is assumed that the first over-temperature detection is triggered, the output level of the first protection circuit is configured to be a low level, and the duration of the temperature detection signal being greater than or equal to the first preset value is the first duration t1. If the first duration t1 is greater than or equal to the first preset time t3, that is, t1≥t3 and the first firmware turns on the execution function of the execution circuit, the execution circuit controls the fuser to turn off, and the fuser heating is turned off without going through the firmware.

[0081] The protection process of the second protection circuit is: the control chip directly performs the second over-temperature detection inside, and when the trigger level of the second protection circuit is high, that is, when the temperature detection signal is higher than the second preset value, the control chip immediately turns off the fuser heating directly without waiting for the debounce time, and at the same time notifies the firmware that the fuser is turned off. The second preset value is greater than the first preset value.

[0082] The protection process of the third protection circuit is: the first firmware controls the third over-temperature detection function switch. If the detection function is turned on, the third over-temperature detection is started inside the control chip. When it is detected that the temperature detection signal is greater than or equal to the third preset value, and the duration of the temperature detection signal being greater than or equal to the third preset value is the second duration t2, if the second duration t2 is greater than or equal to the second preset time t4, that is, t2≥t4 and the first firmware turns on the execution function of the execution circuit, the execution circuit controls the fuser to be turned off, and the fuser heating is turned off without going through the firmware.

[0083] An embodiment of the present application further provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement any of the above-mentioned control methods.

[0084] An embodiment of the present application also provides a computer program product, including a computer program, which implements any of the above-mentioned control methods when executed by a processor.

[0085] Figure 7 This is a schematic diagram of the structure of the control chip provided in this application. Figure 7 As shown, the control chip 50 provided in this embodiment includes: at least one processor 501 and a memory 502. Optionally, the device 50 also includes a communication component 503. The processor 501, the memory 502 and the communication component 503 are connected via a bus 504.

[0086] In a specific implementation process, at least one processor 501 executes the computer-executable instructions stored in the memory 502, so that at least one processor 501 executes the above method.

[0087] The specific implementation process of the processor 501 can be found in the above method embodiment, and its implementation principle and technical effect are similar, so this embodiment will not be repeated here.

[0088] In the above embodiments, it should be understood that the processor can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), etc. A general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the invention can be directly implemented as a hardware processor, or can be implemented by a combination of hardware and software modules in the processor.

[0089] The memory may include a high-speed memory (Random Access Memory, RAM), and may also include a non-volatile memory (NVM), such as at least one disk storage.

[0090] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, the bus in the drawings of this application is not limited to only one bus or one type of bus.

[0091] The present application also provides a computer program product, including a computer program, which implements the above method when executed by a processor.

[0092] The present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, the above method is implemented.

[0093] The above-mentioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. The readable storage medium can be any available medium that can be accessed by a general or special-purpose computer.

[0094] An exemplary readable storage medium is coupled to a processor so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (Application Specific Integrated Circuits, referred to as: ASIC). Of course, the processor and the readable storage medium can also exist in the device as discrete components.

[0095] The division of units is only a logical function division, and there may be other divisions in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0096] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0097] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0098] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0099] Those skilled in the art can understand that all or part of the steps of implementing the above-mentioned method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps of the above-mentioned method embodiments are executed; and the aforementioned storage medium includes: ROM, RAM, disk or optical disk and other media that can store program codes.

[0100] Finally, it should be noted that those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art not disclosed by the present invention, are not limited to the precise structure described above and shown in the drawings, and may be modified and changed in various ways without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A control chip, characterized in that: The control chip is electrically connected to the fuser, and includes: a fuser control module and a main control module, wherein: The main control module is configured to read the current job type; The fixing control module includes: a first protection circuit, a second protection circuit and an execution circuit; The first protection circuit is configured to send a first pre-signal to the execution circuit when the received temperature detection signal is greater than or equal to a first preset value; The second protection circuit is configured to send a second pre-signal to the execution circuit when the received temperature detection signal is greater than or equal to a second preset value; the second preset value is greater than the first preset value; The execution circuit is configured to execute protection control on the fuser when the first pre-set signal is received and the current job type is the first job type; the execution circuit is also configured to execute protection control on the fuser when the second pre-set signal is received; When the main control module reads the second preamble signal, it transmits an imaging stop signal to the imaging module to control the imaging module to stop imaging.

2. The control chip according to claim 1, characterized in that: The fixing control module further includes a third protection circuit, wherein the third protection circuit is configured to send a third pre-set signal to the execution circuit when the received temperature detection signal is greater than or equal to a third preset value; The execution circuit is configured to execute protection control on the fuser when receiving the third preceding signal.

3. The control chip according to claim 1, characterized in that: The execution circuit is a logic gate circuit.

4. The control chip according to claim 1, characterized in that: The main control module is configured to determine the current job type according to the paper type specified when the job is issued.

5. The control chip according to claim 1, characterized in that: The control chip also includes a bus, and the fixing control module includes a register circuit; The second protection circuit is configured to store the second pre-signal in the register circuit when the received temperature detection signal is higher than a second preset value. After the main control module reads the second pre-signal through the bus, it transmits an imaging stop signal to the imaging module to control the imaging module to stop imaging.

6. A control method, characterized in that: The method comprises: receiving a temperature detection signal; If the temperature detection signal is greater than or equal to a first preset value, a first pre-set signal is sent to the execution circuit; the first pre-set signal is used to control the execution circuit to perform protection control on the fuser; If the temperature detection signal is greater than or equal to a second preset value, a second pre-set signal is sent to the execution circuit, and the second pre-set signal is used to control the execution circuit to perform protection control on the fuser.

7. The control method according to claim 6, characterized in that: If the temperature detection signal is greater than or equal to a first preset value, sending a first pre-signal to the execution circuit specifically includes: Acquire the duration of the temperature detection signal being greater than or equal to the first preset value as the first duration; If the first duration is greater than or equal to a first preset time, a first pre-set signal is sent to the execution circuit, wherein the first preset time is associated with the current job type.

8. The control method according to claim 6, characterized in that: The method further comprises: If the temperature detection signal is greater than or equal to a third preset value, obtaining a duration in which the temperature detection signal is greater than or equal to the third preset value as a second duration; If the second duration is greater than or equal to a second preset time, a third pre-set signal is sent to the execution circuit; the third pre-set signal is used to control the execution circuit to perform protection control on the fuser.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the control method according to any one of claims 6 to 8.

10. A computer program product, characterized in that It comprises a computer program, which, when executed by a processor, implements the control method described in any one of claims 6 to 8.

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