Consumable chip, consumable, image forming device and communication method

Abstract

The present application relates to a consumable chip, consumables, an image forming device and a communication method. The consumable chip can be detachably mounted on the consumable, and the consumable can be detachably mounted on the image forming device. The consumable chip comprises: a first storage unit for storing first fixed data representing consumable attribute information; a chip control unit for receiving an authentication request sent by the image forming device, and obtaining the first fixed data and first variable data representing consumable consumption information based on the authentication request, and calculating the first fixed data and the first variable data based on a first preset algorithm to generate authentication data, and sending the authentication data to the image forming device to determine whether to use the consumable for imaging.

Description

Technical Field

[0001] The present application relates to the field of image forming technology, and in particular, to a consumable chip, consumables, an image forming device, and a communication method between the image forming device and the consumable chip. Background Art

[0002] To ensure data security during communication between consumables and image forming devices, conventional techniques typically employ a fixed password to encrypt communication data between the image forming device and the consumables. However, due to the poor stability and reliability of the fixed password, the image forming device can easily authenticate consumables that do not meet quality requirements. This can lead to imaging using these consumables, damaging the image forming device and compromising image quality. Summary of the Invention

[0003] In view of this, the present application proposes a consumable chip, consumables, an image forming device, and a communication method between an image forming device and a consumable chip, which can accurately authenticate consumables, ensure that the consumables that pass the authentication are designated consumables that meet the quality requirements, and avoid damage to the image forming device and impact on the image formation quality due to the use of other consumables that do not meet the quality requirements.

[0004] The present application provides a consumable chip, wherein the consumable chip is detachably mounted on a consumable, and the consumable is detachably mounted on an image forming device, and the consumable chip includes:

[0005] A first storage unit, configured to store first fixed data representing attribute information of consumables;

[0006] A chip control unit is used to receive an authentication request sent by the image forming device, and obtain the first fixed data and the first variable data representing the consumable consumption information based on the authentication request, and calculate the first fixed data and the first variable data based on a first preset algorithm to generate authentication data, and send the authentication data to the image forming device to determine whether to use the consumable for imaging.

[0007] In one embodiment, the chip control unit is further configured to receive a parameter acquisition request sent by the image forming apparatus, and acquire preset parameters provided by the consumable chip based on the parameter acquisition request;

[0008] The chip control unit is further configured to perform calculations based on the authentication data and the preset parameters using a second preset algorithm to generate conversion data corresponding to the preset parameters, and to send the conversion data to the image forming device so that the image forming device executes a preset strategy based on the conversion data.

[0009] In one embodiment, the preset parameters include imaging control parameters, and the preset strategy includes determining whether to use the consumables for imaging according to the imaging control parameters.

[0010] In one embodiment, the preset parameters include consumable parameters, and the preset strategy includes obtaining information about the consumable according to the consumable parameters.

[0011] In one embodiment, the calculation of the first fixed data and the first variable data based on a first preset algorithm to generate authentication data specifically includes: combining the first fixed data and the first variable data to generate first combined data; encrypting the first combined data to generate first data to be processed; performing signature calculation on the first data to be processed to generate first signature data; and encrypting the first data to be processed and the first signature data to generate the authentication data.

[0012] In one embodiment, the first variable data includes information on the number of printed pages, the remaining amount of consumables, and the amount of consumables consumed, and the first fixed data includes a consumable serial number, a consumable model, and a consumable capacity.

[0013] This application also provides a consumable material, including:

[0014] case;

[0015] a developer containing portion, located in the housing and used for containing the developer;

[0016] And the above-mentioned consumable chips.

[0017] In one embodiment, the consumables further include:

[0018] The developer conveying element is used for conveying the developer.

[0019] In one embodiment, the consumables further include:

[0020] Photosensitive drum;

[0021] A charging roller is used for charging the photosensitive drum.

[0022] The present application also provides a consumable material, which includes:

[0023] Photosensitive drum;

[0024] a charging roller, for charging the photosensitive drum;

[0025] And the above-mentioned consumable chips.

[0026] The present application further provides an image forming device, wherein a consumable is mounted on the image forming device, and a consumable chip is mounted on the consumable. The image forming device comprises:

[0027] an image formation control unit, configured to send an authentication request to the consumable chip and receive authentication data sent by the consumable chip based on the authentication request, wherein the authentication data is calculated and generated using a first preset algorithm based on first fixed data representing consumable attribute information and first variable data representing consumable consumption information;

[0028] The image formation control unit is further configured to obtain second fixed data representing consumable property information and second variable data representing consumable consumption information, and calculate the second fixed data and the second variable data based on a first preset algorithm to generate reference data;

[0029] The image formation control unit is further configured to determine whether the authentication data is consistent with the reference data, so as to determine whether to use the consumable material for imaging.

[0030] In one embodiment, the image formation control unit is also used to send a parameter acquisition request to the consumable chip, and receive conversion data sent by the consumable chip based on the parameter acquisition request. The conversion data is calculated and generated using a second preset algorithm based on the authentication data and the preset parameters provided by the consumable chip. The image formation control unit is also used to execute a preset strategy based on the reference data and the conversion data.

[0031] In one embodiment, the preset parameters include imaging control parameters, and the preset strategy includes determining whether to use the consumables for imaging according to the imaging control parameters.

[0032] In one embodiment, the preset parameters include consumable parameters, and the preset strategy includes obtaining information about the consumable according to the consumable parameters.

[0033] In one embodiment, the image formation control unit is further configured to obtain second fixed data representing consumable attribute information and second variable data representing consumable consumption information, and calculate the second fixed data and the second variable data based on a first preset algorithm to generate reference data, specifically including:

[0034] The second fixed data and the second variable data are combined to generate second combined data; the second combined data is encrypted to generate second data to be processed; a signature is calculated on the second data to be processed to generate second signature data; and the second data to be processed and the second signature data are encrypted to generate the reference data.

[0035] In one embodiment, the second variable data includes information on the number of printed pages, the remaining amount of consumables, and the amount of consumables consumed, and the second fixed data includes a consumable serial number, a consumable model, and a consumable capacity.

[0036] The present application also provides a communication method between an image forming device and a consumable chip, which is applied to the image forming device and the consumable chip. The image forming device is detachably mounted with a consumable, and the consumable chip is mounted on the consumable. The image forming device includes an image formation control unit, and the consumable chip includes a chip control unit. The method includes:

[0037] The image formation control unit sends an authentication request to the consumable chip;

[0038] The chip control unit acquires first fixed data representing consumable property information and first variable data representing consumable consumption information based on the authentication request, and calculates the first fixed data and the first variable data based on a first preset algorithm to generate authentication data;

[0039] The chip control unit sends the authentication data to the image formation control unit;

[0040] The image formation control unit acquires second fixed data representing consumables attribute information and second variable data representing consumables consumption information and calculates the second fixed data and the second variable data based on a first preset algorithm to generate reference data;

[0041] The image formation control unit determines whether the authentication data is consistent with the reference data to determine whether to use the consumable material for image formation.

[0042] In one embodiment, the method further comprises:

[0043] The image formation control unit sends a parameter acquisition request to the consumable chip;

[0044] The chip control unit obtains the preset parameters provided by the consumable chip based on the parameter acquisition request;

[0045] The chip control unit is further configured to perform calculations using a second preset algorithm based on the authentication data and the preset parameters to generate conversion data corresponding to the preset parameters and send the conversion data to the image formation control unit;

[0046] The image formation control unit executes a preset strategy based on the reference data and the conversion data.

[0047] In one embodiment, the preset parameters include imaging control parameters, and the preset strategy includes determining whether to use the consumables for imaging according to the imaging control parameters.

[0048] In one embodiment, the preset parameters include consumable parameters, and the preset strategy includes obtaining information about the consumable according to the consumable parameters.

[0049] In one embodiment, the chip control unit obtains first fixed data representing consumable attribute information and first variable data representing consumable consumption information based on the authentication request and calculates the first fixed data and the first variable data based on a first preset algorithm to generate authentication data, specifically including:

[0050] The chip control unit combines the first fixed data and the first variable data to generate first combined data;

[0051] The chip control unit encrypts the combined data to generate first data to be processed;

[0052] The chip control unit performs signature calculation on the first data to be processed to generate first signature data;

[0053] The chip control unit encrypts the first data to be processed and the first signature data to generate the authentication data.

[0054] In one embodiment, the image formation control unit obtains second fixed data representing consumable attribute information and second variable data representing consumable consumption information and calculates the second fixed data and the second variable data based on a first preset algorithm to generate reference data, specifically including:

[0055] The image formation control unit combines the second fixed data and the second variable data to generate second combined data;

[0056] The image forming control unit encrypts the second combined data to generate second data to be processed;

[0057] The image formation control unit performs signature calculation on the second data to be processed to generate second signature data;

[0058] The image formation control unit encrypts the second data to be processed and the second signature data to generate the reference data.

[0059] In one embodiment, the first variable data includes information on the number of printed pages, the remaining amount of consumables, and the amount of consumables consumed, and the first fixed data includes a consumable serial number, a consumable model, and a consumable capacity.

[0060] In one embodiment, the second variable data includes information on the number of printed pages, the remaining amount of consumables, and the amount of consumables consumed, and the second fixed data includes a consumable serial number, a consumable model, and a consumable capacity.

[0061] The technical solution of this application has at least the following beneficial effects:

[0062] The chip control unit of the consumable chip uses the first fixed data representing the consumable attribute information and the first variable data representing the consumable consumption information stored therein to generate authentication data. The authentication data is used for authentication between the consumable chip and the image forming device. Since the authentication data is dynamically changeable, the authentication data received by the image forming device is highly reliable and can accurately authenticate the consumables, ensuring that the consumables that pass the authentication are designated consumables that meet the quality requirements, thereby avoiding damage to the image forming device and affecting the image formation quality due to the use of other consumables that do not meet the quality requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] In order to more clearly illustrate the embodiments of the present application or the technical solutions of the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0064] Figure 1 A schematic structural diagram of an image forming device provided in one embodiment of the present application;

[0065] Figure 2 A schematic diagram of the structure of an image forming device and a consumable chip provided in one embodiment of the present application;

[0066] Figure 3 A flowchart of a communication method between an image forming device and a consumable chip provided in one embodiment of the present application;

[0067] Figure 4 A flowchart of a communication method between an image forming device and a consumable chip provided in another embodiment of the present application;

[0068] Figure 5 A sub-flowchart of a communication method between an image forming device and a consumable chip provided in one embodiment of the present application;

[0069] Figure 6 A sub-flowchart of a communication method between an image forming device and a consumable chip provided in another embodiment of the present application. DETAILED DESCRIPTION

[0070] To facilitate understanding of the present application, a more comprehensive description of the present application will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0071] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0072] The embodiments of the present application relate to communication between an image forming device and a consumable chip, wherein both the image forming device body side and the chip side include electrical contacts, and when the consumable is installed to the image forming device, the electrical contacts on the image forming device body side and the electrical contacts on the chip side contact each other, wherein the electrical contacts may be conductive planes, conductive probes, conductive coils, etc., wherein the image forming device is used to perform image forming operations, such as generating, printing, receiving and sending image data, and examples of image forming devices include: inkjet printers, laser printers, LED (Light Emitting Diode, light emitting diode) printers, copiers, fax machines, scanners or multifunction all-in-one machines and multifunction peripherals (MFP, Multi-Functional Peripheral) that perform the above functions in a single device. The image forming device includes an image forming control unit and an image forming unit, wherein the image forming control unit is used to control the image forming device as a whole, and the image forming unit is used to form an image on a conveyed paper under the control of the image forming control unit based on the image data.

[0073] Figure 1 This is a schematic diagram of the structure of an image forming device provided in one embodiment of the present application; please refer to Figure 1As an example of an image forming device, the image forming unit of the image forming device may include: a developer accommodating portion 11, a developing component 12, a developer conveying element 13, a photosensitive component 14, a transfer component 15 and a fixing assembly 5, etc. The paper to be printed moves in the paper feeding direction, and after successively undergoing the powder feeding operation of the developer conveying element 13 and the developing operation of the developing component 12, arrives at the clamping area between the photosensitive component 14 and the transfer component 15 for transfer, and then passes through the fixing assembly 5 for fixing to complete the image forming operation, wherein the developer accommodating portion 11 is used to accommodate the developer, and the developer can be materials such as toner and carbon powder; the developing component 12 can include components such as a developing roller; the developer conveying element 13 can include components such as a powder feeding roller; the photosensitive component 14 can include components such as a photosensitive drum (OPC, Organic Photoconductor) and a charging roller, etc., and the charging roller is used to charge the photosensitive drum.

[0074] Typically, an image forming device is detachably mounted with at least one consumable material. Figure 1 As an example of the image forming device shown in FIG, the image forming device is detachably mounted with four consumables (respectively Figure 1 The consumables 1, 2, 3 and 4 shown are used to provide the image forming device with four colors of developers (black K, cyan C, magenta M and yellow Y). Of course, in other embodiments, the number of consumables installed in the image forming device can be increased or decreased, for example, to 1 or 6, etc., and this application does not limit this.

[0075] The consumables described in this embodiment can be implemented in a manner such that the consumables are of a split structure, including a developer cartridge and a drum cartridge, wherein the developer cartridge and the drum cartridge are relatively detachable, and a developer cartridge chip is provided in the developer cartridge, and a drum cartridge chip is provided in the drum cartridge, respectively used to store information such as toner content and number of printed pages. For example, the developer cartridge includes a housing, a developer container 11, a developer component 12, and a developer conveying element 13, wherein the developer container 11 is located in the housing and is used to contain developer, and the developer conveying element 13 is used to convey developer; the drum cartridge includes a photoreceptor 14, etc.

[0076] Another possible implementation is that the consumables are of an integrated structure, for example, the consumables (1, 2, 3, or 4) include a developer container 11, a developer component 12, a developer conveying element 13, a photosensitive component 14, a transfer component 15, etc. That is, in this application, for consumables with an integrated structure, one consumable chip is usually provided; for consumables with a separate structure, two consumable chips are usually provided, one mounted on the developer cartridge and the other mounted on the drum cartridge.

[0077] It should be noted that the consumables mentioned in this embodiment can be the above-mentioned developing cartridge, the above-mentioned drum cartridge, or a combination of a developing cartridge and a drum cartridge, which is not limited here; and the consumables mentioned in this embodiment can also be other components, parts, and units in the image forming device that are easily damaged and need to be replaced, such as a paper box, a powder cartridge, a paper box or a powder cartridge, etc., which also belong to the technical solutions corresponding to the consumables protected by the present invention; correspondingly, the consumable chip mentioned in this embodiment is installed on the above-mentioned consumables, and the consumable chip is used to record the status of the consumables to facilitate the image forming device to centrally manage the consumables installed thereon. The consumable chip can store relevant information about the consumables, such as product model, color / type and production date of the recording material (such as ink, toner), usage information of printing media such as toner and paper, number of printed pages, information such as serial number, etc. At the same time, the consumable chip can also be authenticated with the image forming device to prevent the image forming device from using consumables that do not meet the predetermined quality requirements for imaging.

[0078] Please refer to Figure 2 , Figure 2 This is a schematic diagram of the structure of the image forming device 20 and consumable chip 30 provided in an embodiment of the present application. The image forming device 20 includes an image formation control unit 21. The consumable chip 30 is detachably mounted on the consumable, and the consumable is detachably mounted on the image forming device 20. The consumable chip 30 includes a chip control unit 31 and a first storage unit 32.

[0079] The image forming control unit 21 is configured to send an authentication request to the consumable chip 30. The authentication request is a signal that the image forming device 20 sends to the consumable chip 30 to request authentication data.

[0080] The first storage unit 32 is configured to store first fixed data representing consumable attribute information. The chip control unit 31 is configured to receive an authentication request from the image forming device 20 and, based on the authentication request, obtain the first fixed data and first variable data representing consumable consumption information. The chip control unit 31 is further configured to calculate the first fixed data and the first variable data based on a first preset algorithm to generate authentication data, and transmit the authentication data to the image forming device 20 to determine whether to use the consumable for imaging.

[0081] The chip control unit 31 is connected to the image formation control unit 21 via a data bus, and data can be transmitted between the chip control unit 31 and the image formation control unit 21 via the data bus. The image formation control unit 21 sends an authentication request on the data bus, and the chip control unit 31 receives the authentication request on the data bus.

[0082] The first fixed data includes the consumable serial number, consumable model, consumable capacity or other fixed attribute information of the consumable. The first fixed data is fixedly stored in the first storage unit 32 and does not change with the execution of image formation.

[0083] The first variable data includes information about the number of printed pages, the remaining amount of consumables, the amount of consumables consumed, or other rewritable consumable consumption information. The first variable data is rewritten or changed based on the consumption of consumables during the image forming operation performed by the image forming device 20. The consumables chip 30 can store the first variable data after the image forming device 20 completes the image forming operation.

[0084] The chip control unit 31 calculates the first fixed data and the first variable data based on the first preset algorithm to generate authentication data, specifically including: combining the first fixed data and the first variable data to generate first combined data; encrypting the first combined data to generate first data to be processed; performing signature calculation on the first data to be processed to generate first signature data; and encrypting the first data to be processed and the first signature data to generate authentication data.

[0085] The first fixed data and the first variable data are combined to generate the first combined data. Specifically, the first fixed data and the first variable data may be combined to generate the first combined data by treating them as a whole without changing their specific contents, and then splicing the two wholes to generate the first combined data; or, the first fixed data may be split to obtain a plurality of first split data, the first variable data may be split to obtain a plurality of second split data, and the plurality of first split data and the plurality of second split data may be arranged according to a preset arrangement rule to generate the first combined data; or, a portion of the first split data and a portion of the second split data may be randomly arranged to generate the first combined data. The first fixed data and the first variable data may also be combined in other ways, which are not limited here.

[0086] The first combined data is encrypted to generate the first data to be processed. Specifically, the first combined data is encrypted using a preset encryption algorithm to generate the first data to be processed. The preset encryption algorithm may be any one of an AES (Advanced Encryption Standard) algorithm, a DES (Data Encryption Standard) algorithm, a 3DES (Triple DES) algorithm, an SM4 algorithm, or other encryption algorithms, and is not limited here.

[0087] Signature calculation refers to the algorithm used to create digital signatures. A digital signature is a string of numbers generated by the sender that cannot be forged. This string effectively proves the authenticity of the information sent by the sender. When verifying a signature, if the input data is inconsistent, the resulting signature value cannot be the same. The receiver recalculates the signature of the data and compares it with the original stored signature to check for any alterations, verifying that the data was sent intact and unaltered.

[0088] Because the first fixed data undergoes multiple encryption and signature calculations, each time the result is the same, i.e., a fixed result is obtained. However, when the data resulting from the combination of the first variable data and the first fixed data is encrypted and signed multiple times, the first variable data is different each time. Therefore, the multiple encryption and signature calculations for the data resulting from the combination of the first variable data and the first fixed data produce different results each time, i.e., a variable result is obtained. Analyzing a variable result is more difficult than analyzing a fixed result, thereby improving the security and reliability of the authentication data. Furthermore, because the first fixed data and the first variable data are combined, the length of the first combined data is greater than the length of the first fixed data, which increases the difficulty of encrypting the first combined data and the difficulty of decrypting the first combined data, further improving the security and reliability of the authentication data.

[0089] The image formation control unit 21 receives authentication data sent by the consumable chip 30 based on the authentication request. The authentication data is generated by calculation using a first preset algorithm based on first fixed data representing consumable attribute information and first variable data representing consumable consumption information.

[0090] The image formation control unit 21 is further configured to obtain second fixed data representing consumable attribute information and second variable data representing consumable consumption information, and to calculate the second fixed data and the second variable data based on a first preset algorithm to generate reference data. The image formation control unit 21 is further configured to determine whether the authentication data is consistent with the reference data to determine whether to use the consumable for imaging.

[0091] The second fixed data includes the consumable serial number, consumable model, consumable capacity, or other fixed attribute information of the consumable. The second fixed data is permanently stored in the image forming device 20 and does not change as image formation is performed. The consumable serial number, as identification information for the consumable, prevents consumables with incorrect serial numbers from being installed in the image forming device 20.

[0092] The image formation control unit 21 may obtain the second fixed data and the second variable data from the consumable chip 30 , and may obtain the first fixed data and use the first fixed data as the second fixed data, and obtain the first variable data and use the first variable data as the second variable data.

[0093] The second variable data includes information about the number of printed pages, the remaining amount of consumables, the amount of consumables consumed, or other rewritable information about consumables. The second variable data is rewritten or changed based on the consumption of consumables during the image forming operation performed by the image forming device 20. The image forming device 20 may save the second variable data after completing the image forming operation.

[0094] The image formation control unit 21 further calculates the second fixed data and the second variable data based on the first preset algorithm to generate reference data, specifically including:

[0095] The second fixed data and the second variable data are combined to generate second combined data; the second combined data is encrypted to generate second data to be processed; a signature is calculated on the second data to be processed to generate second signature data; and the second data to be processed and the second signature data are encrypted to generate reference data.

[0096] The second fixed data and the second variable data are combined to generate the second combined data. Specifically, the second fixed data and the second variable data may be combined as a whole without changing their specific contents, and the two wholes may be spliced ​​to generate the second combined data; or the second fixed data may be split to obtain a plurality of third split data, the second variable data may be split to obtain a plurality of fourth split data, and the plurality of third split data and the plurality of fourth split data may be arranged according to a preset arrangement rule to generate the second combined data; or a portion of the third split data and a portion of the fourth split data may be randomly arranged to generate the second combined data. The second fixed data and the second variable data may also be combined in other ways, which are not limited here.

[0097] The second combined data is encrypted to generate the second data to be processed. Specifically, the second combined data is encrypted using a preset encryption algorithm to generate the second data to be processed. The preset encryption algorithm may be any one of an AES (Advanced Encryption Standard) algorithm, a DES (Data Encryption Standard) algorithm, a 3DES (Triple DES) algorithm, an SM4 algorithm, or other encryption algorithms, and is not limited here.

[0098] Because the second fixed data undergoes multiple encryption and signature calculations, each time the result is the same, i.e., a fixed result is obtained. However, when the second variable data and the second fixed data are combined, the second variable data is different each time. Therefore, the multiple encryption and signature calculations on the data obtained by combining the second variable data and the second fixed data produce different results each time, i.e., a variable result is obtained. Analyzing a variable result is more difficult than analyzing a fixed result, thereby improving the security and reliability of the reference data. Furthermore, because the second fixed data and the second variable data are combined, the data length of the second combined data is longer than the data length of the fixed data, which increases the difficulty of encrypting the second combined data and the difficulty of decrypting the second combined data, further improving the security and reliability of the reference data.

[0099] In one embodiment, the image forming control unit 21 is further configured to send a parameter acquisition request to the consumable chip 30. The parameter acquisition request is a request signal for the image forming device 20 to acquire preset parameters from the consumable chip 30.

[0100] The chip control unit 31 is further configured to receive a parameter acquisition request sent by the image forming device 20 and, based on the parameter acquisition request, acquire the preset parameters provided by the consumable chip 30. The chip control unit 31 is further configured to perform a calculation using a second preset algorithm based on the authentication data and the preset parameters to generate conversion data corresponding to the preset parameters, and to transmit the conversion data to the image forming device 20 so that the image forming device 20 executes the preset policy based on the conversion data.

[0101] The image forming device receives the conversion data sent by the consumable chip 30 based on the parameter acquisition request. The conversion data is calculated and generated using a second preset algorithm based on the authentication data and the preset parameters provided by the consumable chip 30. The image forming control unit 21 is also used to execute the preset strategy based on the reference data and the conversion data.

[0102] The preset parameters include imaging control parameters and consumable material parameters. Imaging control parameters are control parameters used by the image forming apparatus 20 to perform imaging operations. These parameters include at least one of a high-voltage compensation parameter corresponding to an environmental parameter, a calibration parameter for a color image forming mode, a transfer voltage, and a developing voltage.

[0103] The consumable chip 30 may store the preset parameters in plain text form or in cipher text form.

[0104] When the consumable chip 30 stores preset parameters in plain text, after receiving the parameter acquisition request sent by the image forming device 20, the chip control unit 31 uses the second preset algorithm to calculate based on the authentication data and the preset parameters, generates conversion data corresponding to the preset parameters, and then sends the conversion data to the image forming device 20. After receiving the conversion data, the image forming control unit 21 decrypts the conversion data based on the reference data and the second preset algorithm.

[0105] When the consumable chip 30 stores the preset parameters in ciphertext form, the chip control unit 31 specifically encrypts the preset parameters using the authentication data based on the second preset algorithm to generate conversion data corresponding to the preset parameters, which the consumable chip 30 then stores. Upon receiving a parameter acquisition request from the image forming device 20, the chip control unit 31 transmits the conversion data to the image forming device 20. Upon receiving the conversion data, the image forming control unit 21 decrypts the conversion data based on the reference data and the second preset algorithm.

[0106] When the preset parameters include imaging control parameters, the preset strategy includes determining whether to use consumables for imaging based on the imaging control parameters. In other words, the image formation control unit 21 determines whether the consumables can be used for imaging based on the imaging control parameters. If the consumables can be used for imaging, the image formation control unit 21 adjusts the characteristics of the imaging control parameters to improve the image formation effect.

[0107] When the preset parameters include consumable parameters, the preset strategy includes acquiring information about the consumables according to the consumable parameters. The image formation control unit 21 can acquire information related to the consumables through the consumable parameters.

[0108] In this embodiment, the chip control unit 31 uses the authentication data calculated by the first fixed data and the first variable data to encrypt the preset parameters to generate conversion data, and then sends the conversion data to the image formation control unit 21. The image formation control unit 21 uses the reference data calculated by the second fixed data and the second variable data to decrypt the conversion data. Since the authentication data and the reference data are dynamically changeable, the authentication data is used to encrypt the preset parameters, which increases the difficulty of data analysis. The authentication data is updated in real time, making it more difficult to crack, thereby enhancing the security and reliability of the data sent by the chip control unit 31 to the image formation control unit 21, and can prevent the data sent by the chip control unit 31 to the image formation control unit 21 from being maliciously intercepted and stolen.

[0109] The image forming device 20 and consumable chip 30 of the present application, the chip control unit 31 of the consumable chip 30 uses the first fixed data and first variable data stored therein to generate authentication data, and the authentication data is used for authentication between the consumable chip 30 and the image forming device 20. Since the authentication data is dynamically variable, the authentication data received by the image forming device 20 is highly reliable and can accurately authenticate the consumables, ensuring that the consumables that pass the authentication are designated consumables that meet the quality requirements, thereby avoiding damage to the image forming device 20 and affecting the image formation quality due to the use of other consumables that do not meet the quality requirements.

[0110] Please refer to Figure 3 The present application also provides a method for communicating between an image forming device and a consumable chip. The method is applied to the image forming device and the consumable chip. The image forming device is detachably mounted with a consumable, and the consumable chip is mounted on the consumable. The image forming device includes an image forming control unit, and the consumable chip includes a chip control unit. The method includes the following steps:

[0111] S101: The image formation control unit sends an authentication request to the consumable chip.

[0112] S102: The chip control unit obtains first fixed data representing consumable property information and first variable data representing consumable consumption information based on the authentication request, and calculates the first fixed data and the first variable data based on a first preset algorithm to generate authentication data.

[0113] S103 , the chip control unit sends the authentication data to the image formation control unit.

[0114] S104 , the image formation control unit obtains second fixed data representing consumable property information and second variable data representing consumable consumption information, and calculates the second fixed data and the second variable data based on a first preset algorithm to generate reference data.

[0115] S105 , the image formation control unit determines whether the authentication data is consistent with the reference data to determine whether to use consumables for imaging.

[0116] The first variable data includes information on the number of printed pages, the remaining amount of consumables, and the amount of consumables consumed. The first fixed data includes a consumable serial number, a consumable model, and a consumable capacity.

[0117] The second variable data includes information on the number of printed pages, the remaining amount of consumables, and the amount of consumables consumed. The second fixed data includes the consumables serial number, consumables model, and consumables capacity.

[0118] The communication method between the image forming device and the consumable chip of the present application is as follows: the chip control unit of the consumable chip uses the first fixed data representing the consumable attribute information and the first variable data representing the consumable consumption information stored therein to generate authentication data, and the authentication data is used for authentication between the consumable chip and the image forming device. Since the authentication data is dynamically variable, the authentication data received by the image forming device is highly reliable and can accurately authenticate the consumables, ensuring that the consumables that pass the authentication are the designated consumables that meet the quality requirements, thereby avoiding damage to the image forming device and affecting the image formation quality due to the use of other consumables that do not meet the quality requirements.

[0119] Please refer to Figure 4 In one embodiment, the method further comprises:

[0120] S201: The image formation control unit sends a parameter acquisition request to the consumable chip.

[0121] S202: The chip control unit obtains preset parameters provided by the consumable chip based on the parameter acquisition request.

[0122] S203 , the chip control unit is further configured to perform calculations using a second preset algorithm based on the authentication data and the preset parameters to generate conversion data corresponding to the preset parameters and send the conversion data to the image formation control unit.

[0123] S204 , the image formation control unit executes a preset strategy based on the reference data and the conversion data.

[0124] When the preset parameters include imaging control parameters, the preset strategy includes determining whether to use consumables for imaging according to the imaging control parameters, and adjusting characteristics of the imaging control parameters to improve image formation effects.

[0125] When the preset parameters include consumable parameters, the preset strategy includes obtaining information about the consumables according to the consumable parameters.

[0126] The chip control unit uses authentication data to encrypt and calculate preset parameters to generate conversion data, and then sends the conversion data to the image formation control unit. The image formation control unit uses reference data to decrypt the conversion data and executes the preset strategy based on the decrypted data. Since the authentication data and reference data are dynamically changeable, the use of authentication data to encrypt the preset parameters increases the difficulty of data analysis, and the authentication data is updated in real time, making it more difficult to crack, thereby enhancing the security and reliability of the data sent by the chip control unit to the image formation control unit, and can prevent the data sent by the chip control unit to the image formation control unit from being maliciously intercepted and stolen.

[0127] Please refer to Figure 5 , S102, specifically including:

[0128] S11 , the chip control unit combines the first fixed data and the first variable data to generate first combined data.

[0129] S12, the chip control unit encrypts the combined data to generate first data to be processed.

[0130] S13, the chip control unit performs signature calculation on the first data to be processed to generate first signature data.

[0131] S14, the chip control unit encrypts the first data to be processed and the first signature data to generate authentication data.

[0132] Because the first fixed data undergoes multiple encryption and signature calculations, each time the result is the same, i.e., a fixed result is obtained. However, when the data resulting from the combination of the first variable data and the first fixed data is encrypted and signed multiple times, the first variable data is different each time. Therefore, the multiple encryption and signature calculations for the data resulting from the combination of the first variable data and the first fixed data produce different results each time, i.e., a variable result is obtained. Analyzing a variable result is more difficult than analyzing a fixed result, thereby improving the security and reliability of the authentication data. Furthermore, because the first fixed data and the first variable data are combined, the length of the first combined data is greater than the length of the first fixed data, which increases the difficulty of encrypting the first combined data and the difficulty of decrypting the first combined data, further improving the security and reliability of the authentication data.

[0133] Please refer to Figure 6 , S104, specifically including:

[0134] S21 : The image formation control unit combines the second fixed data and the second variable data to generate second combined data.

[0135] S22 , the image formation control unit encrypts the second combined data to generate second data to be processed.

[0136] S23, the image formation control unit performs signature calculation on the second data to be processed to generate second signature data.

[0137] S24, the image formation control unit encrypts the second data to be processed and the second signature data to generate reference data.

[0138] Because the second fixed data undergoes multiple encryption and signature calculations, each time the result is the same, i.e., a fixed result is obtained. However, when the second variable data and the second fixed data are combined, the second variable data is different each time. Therefore, the multiple encryption and signature calculations on the data obtained by combining the second variable data and the second fixed data produce different results each time, i.e., a variable result is obtained. Analyzing a variable result is more difficult than analyzing a fixed result, thereby improving the security and reliability of the reference data. Furthermore, because the second fixed data and the second variable data are combined, the data length of the second combined data is longer than the data length of the fixed data, which increases the difficulty of encrypting the second combined data and the difficulty of decrypting the second combined data, further improving the security and reliability of the reference data.

[0139] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0140] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A consumable chip, wherein the consumable chip is mounted on a consumable, and the consumable is detachably mounted on an image forming device, characterized in that: The consumable chip includes: a chip control unit for receiving an authentication request sent by the image forming device, and sending authentication data to the image forming device based on the authentication request, wherein the authentication data is used to determine whether it is consistent with the reference data, wherein the authentication data is the same as the result of calculating the first fixed data representing the consumable properties and the first variable data representing the consumable consumption information based on a first preset algorithm, wherein the first fixed data will not change with the execution of the image forming operation, and the first variable data is rewritten or changed according to the consumption status of the consumables during the image forming operation performed by the image forming device.

2. The consumable chip according to claim 1, characterized in that: The consumable chip further includes a first storage unit, and the first storage unit is used to store the first fixed data.

3. The consumable chip according to claim 1, characterized in that: The chip control unit is further configured to receive a parameter acquisition request sent by the image forming device, and acquire preset parameters based on the parameter acquisition request; and send conversion data to the image forming device to determine whether to use the consumable material for imaging, wherein the conversion data is the same as a result calculated by using a second preset algorithm based on the authentication data and the preset parameters; or The authentication data is the same as the result of calculating the first fixed data characterizing the consumable properties and the first variable data characterizing the consumable consumption information based on a first preset algorithm, including: the authentication data is the same as the result of encrypting and / or signing the combination of the first fixed data and the first variable data.

4. The consumable chip according to any one of claims 1 to 3, characterized in that: The first variable data includes information on the number of printed pages, the remaining amount of consumables, and the amount of consumables consumed, and the first fixed data includes a consumable serial number, a consumable model, and a consumable capacity.

5. A consumable material, characterized in that: include: case; a developer containing portion, located in the housing and used for containing the developer; And the consumable chip according to any one of claims 1 to 4.

6. The consumable material according to claim 5, characterized in that: The consumables also include: The developer conveying element is used for conveying the developer.

7. The consumable material according to claim 6, characterized in that: The consumables also include: Photosensitive drum; A charging roller is used for charging the photosensitive drum.

8. A consumable material, characterized in that: The consumables include: Photosensitive drum; a charging roller, for charging the photosensitive drum; And the consumable chip according to any one of claims 1 to 4.

9. A communication method between an image forming device and a consumable chip, applied to a consumable chip, wherein the image forming device is detachably mounted with a consumable, the consumable chip being mounted on the consumable, the image forming device including an image forming control unit, and the consumable chip including a chip control unit, characterized in that: The method comprises: receiving an authentication request sent by the image formation control unit; providing authentication data to the image forming device based on the authentication request to determine whether to use the consumable material for imaging, the image formation control unit being further configured to determine whether the authentication data is consistent with reference data; The authentication data is the same as the result of calculating the first fixed data representing the properties of the consumables and the first variable data representing the consumables consumption information based on a first preset algorithm, wherein the first fixed data will not change with the execution of the image forming operation, and the first variable data is rewritten or changed according to the consumption status of the consumables during the image forming operation performed by the image forming device.

10. The method according to claim 9, characterized in that The method further comprises: receiving a parameter acquisition request sent by the image formation control unit; Sending conversion data to the image formation control unit based on the parameter acquisition request, the conversion data being used to determine whether to use the consumable material for imaging; wherein the conversion data is the same as a result calculated by using a second preset algorithm based on the authentication data and preset parameters; or The authentication data is the same as the result of calculating the first fixed data characterizing the consumable properties and the first variable data characterizing the consumable consumption information based on a first preset algorithm, including: the authentication data is the same as the result of encrypting and / or signing the combination of the first fixed data and the first variable data.

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