CN111823710A - Electronic device and consumable unit - Google Patents
Electronic device and consumable unit Download PDFInfo
- Publication number
- CN111823710A CN111823710A CN202010293322.5A CN202010293322A CN111823710A CN 111823710 A CN111823710 A CN 111823710A CN 202010293322 A CN202010293322 A CN 202010293322A CN 111823710 A CN111823710 A CN 111823710A
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- Prior art keywords
- consumable
- unit
- electronic device
- control program
- control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
Landscapes
- Ink Jet (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
- Facsimiles In General (AREA)
Abstract
An electronic device and a consumable unit are provided. The electronic device performs control relating to the consumable held by the replaceable consumable unit. The electronic device includes a control unit that reads a control program corresponding to the consumable unit from the consumable unit mounted to the electronic device, and performs control related to the consumable using the control program.
Description
Technical Field
The invention relates to an electronic device and a consumable unit.
Background
Some electronic devices such as printing apparatuses use a replaceable consumable unit that holds a consumable such as ink.
For example, an inkjet printing apparatus using an ink cartridge that can be replaced is known.
An ink cartridge used in such an ink jet printing apparatus stores, in a memory of the ink cartridge, ink physical property information indicating physical properties such as viscosity and surface tension of the ink. The inkjet printing apparatus acquires ink physical property information from a memory of the ink cartridge and performs ink ejection control based on the ink physical property information (see patent document 1).
Here, in the ink cartridge, the format of the memory may be changed by changing the physical properties of the ink or adding ink physical property information stored in the memory, so as to improve the quality, cope with the environment, and the like.
In this case, the inkjet printing apparatus needs to change the control program (firmware) so as to support a new generation of ink cartridges in which the format of the memory is changed.
If the inkjet printing apparatus is connected to the internet, the control program can be automatically downloaded and changed.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2016-153199
Disclosure of Invention
Further, since the inkjet printing apparatus is not limited to being connected to the internet, a new generation of ink cartridges may not be available because a new control program cannot be acquired.
The invention aims to provide an electronic device and a consumable unit which can reduce the situation that the consumable unit becomes unusable.
The electronic device according to the present invention performs control relating to a consumable held by a replaceable consumable unit. The electronic device includes a control unit that reads a control program corresponding to the consumable unit from the consumable unit mounted to the electronic device, and performs control related to the consumable using the control program.
The consumable unit according to the present invention holds a consumable used in an electronic device, and includes a storage unit that stores a control program for the electronic device to perform control related to the consumable.
According to the present invention, it is possible to reduce the situation in which the consumable unit becomes unusable.
Drawings
Fig. 1 is a block diagram showing a configuration of a printing apparatus according to an embodiment.
Fig. 2 is a conceptual diagram of a memory map of a memory included in the ink cartridge mounted in the printing apparatus shown in fig. 1.
Fig. 3 is an explanatory diagram of a storage area of the control program in the storage unit of the printing apparatus shown in fig. 1.
Fig. 4 is a flowchart for explaining an operation when the ink cartridge is mounted in the printing apparatus shown in fig. 1.
Description of the reference numerals
1: a printing device; 2: an ink jet head; 3: an ink path mechanism portion; 4: a conveying section; 5: an operation panel; 6: an installation part; 7: a communication unit; 8: a storage unit; 9: a CPU; 10: a RAM; 11: an ink cartridge; 12: a memory.
Detailed Description
Embodiments of the present invention will be described below with reference to the drawings.
Fig. 1 is a block diagram showing a configuration of a printing apparatus according to an embodiment of the present invention. Fig. 2 is a conceptual diagram of a memory map of a memory included in the ink cartridge mounted in the printing apparatus shown in fig. 1. Fig. 3 is a schematic diagram showing a storage area of a control program in the storage unit of the printing apparatus shown in fig. 1.
As shown in fig. 1, a printing apparatus (electronic device) 1 according to the present embodiment includes an inkjet head 2, an ink path mechanism portion 3, a conveying portion 4, an operation panel 5, a mounting portion 6, a communication portion 7, a storage portion 8, a CPU (control portion) 9, and a RAM 10.
The inkjet heads 2 eject ink onto the paper conveyed by the conveying section 4 to perform printing.
The ink path mechanism 3 supplies ink (consumable) of an ink cartridge (consumable unit) 11, which will be described later, to the inkjet head 2 via an ink path (not shown).
The transport unit 4 takes out a sheet from a sheet feeding deck (not shown), transports the sheet along a transport path (not shown), and discharges the sheet after printing by the inkjet head 2. The conveying section 4 includes a roller for conveying the sheet, a motor (both not shown) for driving the roller, and the like.
The operation panel 5 displays various input screens and the like, and accepts input operations by the user. The operation panel 5 includes: an input unit having various operation keys, a touch panel, and the like; and a display unit (not shown) having a liquid crystal display panel and the like.
The mounting portion 6 is a portion to which the ink cartridge 11 is mounted in a replaceable manner. The structure of the ink cartridge 11 will be described later.
The communication unit 7 wirelessly communicates with the ink cartridge 11, and reads information and the like from a memory (storage unit of consumable unit) 12 of the ink cartridge 11, which will be described later.
The storage unit 8 stores a control program for performing control in accordance with the ink cartridge 11. Specifically, the control program is a program for performing read control of ink physical property information (consumable information) Pn (N is 0, 1, 2, …, N) and the like according to the format of the memory 12 of the ink cartridge 11. The storage unit 8 is constituted by a nonvolatile memory.
As shown in fig. 3, the storage unit 8 has a plurality of areas (storage areas) Ax (X is 0, 1, 2, …, X) for storing the control program. Each region Ax is a region capable of storing 1 control program each.
Each region Ax corresponds to a control program corresponding to the ink cartridge 11. That is, the control program area number as the number indicating each area Ax corresponds to the control program according to the format of the memory 12 of the ink cartridge 11. Here, the control program region numbers of the regions a0, a1, a2, and … are 0, 1, 2, and …, respectively.
At the time of the sale of the printing apparatus 1, at this point in time, the control program corresponding to the ink cartridge 11 that can be used in the printing apparatus 1 is already stored in the region Ax corresponding to the control program. In addition, at least 1 of the areas Ax is an empty area where the control program is not stored when the printing apparatus 1 is sold. When the control program not stored in the storage unit 8 is read out from the memory 12 of the ink cartridge 11 described later after the printing apparatus 1 is distributed, the control program is stored in the empty area Ax corresponding thereto.
The storage unit 8 stores keys Kx (X is 0, 1, 2, …, X) corresponding to the respective areas Ax and different for each area Ax. The key Kx is used to generate a password for decrypting the encrypted ink physical property information Pn and the checksum (judgment information) read out from the memory 12 of the ink cartridge 11.
The storage unit 8 also stores various programs other than the control program described above. For example, the storage section 8 stores a program for drive control of the inkjet heads 2 based on the ink physical property information Pn.
The CPU9 executes various programs to control the overall operation of the printing apparatus 1.
Specifically, when the ink cartridge 11 is mounted in the mounting portion 6, the CPU9 reads the ink physical property information Pn from the memory 12 of the ink cartridge 11 using a control program corresponding to the ink cartridge 11. At this time, when the control program corresponding to the ink cartridge 11 mounted to the mounting portion 6 is not stored in the storage portion 8, the CPU9 reads the control program from the memory 12 of the ink cartridge 11. Then, the CPU9 reads the ink physical property information Pn from the memory 12 using the control program read out from the memory 12 of the ink cartridge 11.
At the time of printing, the CPU9 performs drive control of the inkjet heads 2 based on the ink physical property information Pn using a program for drive control of the inkjet heads 2.
The RAM 10 is used as a work area of the CPU9 for temporary data storage and calculation.
The ink cartridge 11 holds ink used for printing in the printing apparatus 1. In addition, the ink cartridge 11 has a memory 12. As shown in fig. 2, the memory 12 stores therein a unique UID (identifier), a control program area number, ink physical property information Pn, a checksum, and a control program.
The control program area number indicates an area Ax of the storage unit 8 of the printing apparatus 1 for storing the control program corresponding to the ink cartridge 11.
The ink physical property information Pn indicates the physical property of the ink held by this ink cartridge 11.
The checksum is data for verifying the ink physical property information Pn calculated from the ink physical property information Pn held in the memory 12.
The ink physical property information Pn and the checksum are encrypted using the encryption key generated from the encryption key stored in the storage unit 8 of the printing apparatus 1 in correspondence with the area Ax of the control program area number stored in the memory 12.
The control program is a program for the CPU9 of the printing apparatus 1 to perform control corresponding to the ink cartridge 11.
Here, as for the ink cartridge 11, there are cases where: the format of the memory 12 is changed from the previous generation in response to addition of the ink physical property information Pn or the like due to product improvement or the like. The control program stored in the memory 12 is used to perform read control in accordance with the format of the memory 12.
Next, the operation when the ink cartridge 11 is mounted in the printing apparatus 1 will be described with reference to the flowchart of fig. 4.
The ink cartridge 11 is mounted to the mounting portion 6 by the user's operation, and the process of the flowchart of fig. 4 is started. The ink cartridge 11 is mounted to the mounting portion 6 by a sensor not shown.
In step S1 of fig. 4, the CPU9 reads the control program area number from the memory 12 of the ink cartridge 11 via the communication section 7.
Next, in step S2, the CPU9 determines whether or not the control program is stored in the area Ax of the control program area number acquired in step S1. If it is determined that the control program is stored (step S2: YES), the CPU9 proceeds to step S5.
If it is determined that the control program is not saved (no in step S2), in step S3, the CPU9 reads the control program from the memory 12 of the ink cartridge 11 via the communication unit 7.
Next, in step S4, the CPU9 saves the control program read out from the memory 12 in step S3 to the region Ax of the control program region number acquired in step S1. After that, the CPU9 proceeds to step S5.
In step S5, the CPU9 generates a password for encryption and decryption from the key Kx corresponding to the region Ax of the control program region number acquired in step S1.
Next, in step S6, the CPU9 reads the ink physical property information Pn and the checksum from the memory 12 of the ink cartridge 11 via the communication section 7. At this time, the CPU9 performs read control of the ink physical property information Pn and the checksum from the memory 12 using the control program stored in the region Ax of the control program region number acquired in step S1.
Then, the CPU9 decrypts the encryption of the ink physical property information Pn read out from the memory 12 and the checksum, using the password generated in step S5.
Here, the CPU9 stores the ink physical property information Pn obtained by decrypting the encryption in the storage section 8. This ink physical property information Pn is used for drive control of the inkjet head 2 at the time of printing.
Next, in step S7, the CPU9 determines whether the checksum is correct. Here, the CPU9 calculates a checksum from the ink physical property information Pn obtained by decrypting the encryption, and determines that the checksum is correct when the checksum matches the checksum obtained by decrypting the encryption.
If the checksum is determined to be incorrect (step S7: NO), in step S8, the CPU9 determines that the ink cartridge 11 mounted to the mounting portion 6 is not genuine, and causes the display portion of the operation panel 5 to display an illegal ink error. Thereby, the series of processes ends.
If the checksum is determined to be correct (yes in step S7), in step S9, the CPU9 determines whether or not the ink of the ink cartridge 11 mounted to the mounting portion 6 is ink that can be used in the printing apparatus 1, based on the ink physical property information Pn obtained by decrypting the encryption. If it is determined that it is ink that can be used (step S9: yes), the CPU9 ends the series of processing.
If it is determined that the ink is not usable (step S9: no), in step S10, the CPU9 causes the display section of the operation panel 5 to display an ink unsuitable error. Thereby, the series of processes ends.
In printing, the CPU9 causes the inkjet heads 2 to eject ink to form an image on a sheet while conveying the sheet by the conveying section 4. At this time, the CPU9 performs drive control of the inkjet heads 2 based on the ink physical property information Pn using a program for drive control of the inkjet heads 2.
As described above, the ink cartridge 11 used in the printing apparatus 1 stores the control program in the memory 12. When the control program corresponding to the ink cartridge 11 is not stored in the storage unit 8 when the ink cartridge 11 is mounted in the printing apparatus 1, the CPU9 reads the control program from the ink cartridge 11. Then, the CPU9 performs read control of the ink physical property information Pn and the like using the control program read from the ink cartridge 11.
Thus, even when a new generation ink cartridge 11, the format of which has been changed in the memory 12, is installed in the printing apparatus 1 and the control program cannot be automatically downloaded and acquired via the internet, the control program corresponding to the ink cartridge 11 can be acquired and the reading control of the ink physical property information Pn and the like can be performed. As a result, the following can be reduced: the ink cartridge 11 becomes unusable because the control program corresponding to the ink cartridge 11 cannot be acquired.
In the printing apparatus 1, the storage unit 8 has a plurality of areas Ax for storing the control program. The CPU9 saves the control program read out from the ink cartridge 11 mounted to the printing apparatus 1 to the empty area Ax. This makes it possible to speed up the process of acquiring the control program, compared to the case where the stored control program is rewritten to the control program read out from the ink cartridge 11.
Since a plurality of control programs can be stored in the storage unit 8, a plurality of types of ink cartridges 11 having different formats of the memory 12 can be provided for the same ink, and corresponding control programs can be prepared.
Thus, even if it is desired to compare data stored in the memories 12 of the plurality of types of ink cartridges 11 and analyze the contents, the analysis is difficult due to the format of the memories 12. Therefore, the ink physical property information Pn of the memory 12 can be prevented from being illegally tampered. As a result, the following can be prevented: if the ink physical property information Pn in the memory 12 is tampered with and inappropriate drive control is performed for the inkjet heads 2, degradation of the quality of the printed image and malfunction of the printing apparatus 1 occur.
In the printing apparatus 1, the storage unit 8 stores the key Kx. In the ink cartridge 11 mounted to the printing apparatus 1, the ink physical property information Pn stored in the memory 12 is encrypted by a password generated from the key Kx stored in the storage unit 8 of the printing apparatus 1. This makes it possible to make the analysis and falsification of the ink physical property information Pn stored in the memory 12 of the ink cartridge 11 more difficult.
In the printing apparatus 1, the storage unit 8 stores the keys Kx different for each of the plurality of blocks Ax corresponding to the control program corresponding to the ink cartridges 11. This enables the same ink cartridge 11 (control program) to support a plurality of keys Kx. This makes it possible to make the analysis and falsification of the ink physical property information Pn stored in the memory 12 of the ink cartridge 11 more difficult.
The ink cartridge 11 mounted on the printing apparatus 1 stores a checksum in the memory 12. The CPU9 of the printing apparatus 1 reads the checksum from the memory 12, and determines whether or not the ink cartridge 11 is genuine using the checksum. This makes it possible to determine whether or not the ink cartridge 11 is genuine, and thus it is possible to prevent a reduction in the quality of a printed image and a malfunction of the printing apparatus 1 due to the use of an unauthorized ink cartridge 11.
In addition, in the above-described embodiment, the following configuration is shown: the storage unit 8 has a plurality of areas Ax, and stores the control program read from the ink cartridge 11 in the empty area Ax of the storage unit 8. However, the control program stored in the storage unit may be rewritten to the control program read out from the ink cartridge 11.
In the above-described embodiment, the following case is explained: the control program stored in the memory 12 of the ink cartridge 11 is a program for performing read control of the ink physical property information Pn and the like according to the format of the memory 12. However, the control program stored in the memory 12 may further include a program for controlling driving of the inkjet heads 2. The control program stored in the memory 12 may be any program for performing control relating to the ink of the ink cartridge 11.
In the above-described embodiment, the example in which the ink physical property information Pn and the checksum are encrypted has been described, but encryption may be omitted.
In the above-described embodiment, the memory 12 stores the checksum of the ink physical property information Pn for determining whether or not the ink cartridge 11 is genuine, but the checksum may be omitted. In addition, other determination information may be used to determine whether the ink cartridge 11 is genuine.
In the above-described embodiments, the description has been given by taking as an example a printing apparatus of an ink jet system using an ink cartridge, but the present invention is not limited to this, and can be applied to any electronic device that performs control relating to a consumable held by a replaceable consumable unit. For example, the present invention can be applied to a stencil printing apparatus using an original plate (stencil paper) wound around a paper tube as a consumable unit.
The present invention is not limited to the above-described embodiments, and the components can be modified and embodied in the implementation stage without departing from the spirit thereof. In addition, various inventions can be formed by appropriate combinations of a plurality of constituent elements disclosed in the above embodiments. For example, some of the components may be deleted from all the components shown in the embodiments.
The present invention has, for example, the following configurations.
(attached note 1)
The electronic device performs control relating to the consumable held by the replaceable consumable unit. The electronic device includes a control unit that reads a control program corresponding to the consumable unit from the consumable unit mounted to the electronic device, and performs control related to the consumable using the control program.
(attached note 2)
The electronic device described in supplementary note 1 further includes a storage unit having a plurality of storage areas for the control program, wherein when the control program corresponding to the consumable unit is stored in the storage unit when the consumable unit is mounted in the electronic device, the control unit performs control related to the consumable using the control program stored in the storage unit, and when the control program corresponding to the consumable unit is not stored in the storage unit when the consumable unit is mounted in the electronic device, the control unit reads the control program from the consumable unit and stores the control program in an empty storage area among the plurality of storage areas, and performs control related to the consumable using the stored control program.
(attached note 3)
In the electronic device described in supplementary note 2, each of the storage areas corresponds to the control program corresponding to the consumable unit, the storage unit stores a key different for each of the storage areas, the control unit reads consumable information encrypted with a password generated based on the key corresponding to the storage area corresponding to the control program corresponding to the consumable unit from the consumable unit mounted to the electronic device, and the control unit generates a password based on the key corresponding to the storage area corresponding to the control program corresponding to the consumable unit and decrypts the encryption of the read consumable information using the generated password.
(attached note 4)
The electronic device described in supplementary note 1 further includes a storage unit that stores a key corresponding to the consumable unit, the control unit reads consumable information encrypted with a password generated based on the key corresponding to the consumable unit from the consumable unit attached to the electronic device, and the control unit generates a password based on the key corresponding to the consumable unit stored in the storage unit and decrypts the encryption of the read consumable information using the generated password.
(attached note 5)
In the electronic apparatus described in any of supplementary notes 1 to 4, the control section reads determination information for determining whether or not the consumable unit is genuine from the consumable unit mounted to the electronic apparatus, and the control section determines whether or not the consumable unit mounted to the electronic apparatus is genuine using the read determination information.
(attached note 6)
The consumable unit holds a consumable used in an electronic device, and includes a storage unit that stores a control program for the electronic device to perform control related to the consumable.
(attached note 7)
In the consumable unit described in supplementary note 6, the storage unit stores consumable information encrypted with a password generated from a key stored in the electronic device.
(attached note 8)
In the consumable unit described in supplementary note 6 or 7, the storage unit stores determination information for determining whether or not the consumable unit is genuine in the electronic device.
Claims (8)
1. An electronic device performs control relating to a consumable held by a replaceable consumable unit,
the electronic device includes a control unit that reads a control program corresponding to the consumable unit from the consumable unit mounted to the electronic device, and performs control related to the consumable using the control program.
2. The electronic device of claim 1,
further comprises a storage unit having a plurality of storage areas for the control program,
when the control program corresponding to the consumable unit is stored in the storage unit when the consumable unit is mounted to the electronic device, the control unit performs control related to the consumable using the control program stored in the storage unit,
when the control program corresponding to the consumable unit is not stored in the storage unit when the consumable unit is mounted to the electronic device, the control unit reads the control program from the consumable unit, stores the control program in an empty storage area among the plurality of storage areas, and performs control related to the consumable using the stored control program.
3. The electronic device of claim 2,
each of the holding areas corresponds to the control program corresponding to the consumable unit,
the storage unit stores keys different for each storage area,
the control unit reads, from the consumable unit mounted to the electronic device, consumable information encrypted with a password generated from the key corresponding to the storage area corresponding to the control program corresponding to the consumable unit,
the control unit generates a password from the key corresponding to the storage area corresponding to the control program corresponding to the consumable unit, and decrypts the encryption of the read consumable information using the generated password.
4. The electronic device of claim 1,
further comprises a storage unit for storing a key corresponding to the consumable unit,
the control section reads, from the consumable unit mounted to the electronic device, consumable information encrypted with a password generated from the key corresponding to the consumable unit,
the control unit generates a password from the key corresponding to the consumable unit stored in the storage unit, and decrypts the encryption of the read consumable information using the generated password.
5. The electronic device according to any one of claims 1 to 4,
the control unit reads, from the consumable unit mounted to the electronic device, determination information for determining whether the consumable unit is genuine, and the control unit determines, using the read determination information, whether the consumable unit mounted to the electronic device is genuine.
6. A consumable unit holding a consumable used in an electronic device,
the consumable unit includes a storage unit that stores a control program for the electronic device to perform control related to the consumable.
7. The consumable unit of claim 6,
the storage unit stores consumable information encrypted with a password generated from a key stored in the electronic device.
8. Consumable unit according to claim 6 or 7,
the storage unit stores determination information for determining whether or not the consumable unit is genuine in the electronic device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-081791 | 2019-04-23 | ||
| JP2019081791A JP7315367B2 (en) | 2019-04-23 | 2019-04-23 | Electronics and consumable units |
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| Publication Number | Publication Date |
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| CN111823710A true CN111823710A (en) | 2020-10-27 |
| CN111823710B CN111823710B (en) | 2022-04-05 |
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| CN202010293322.5A Active CN111823710B (en) | 2019-04-23 | 2020-04-15 | Electronic device and consumable unit |
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| JP (1) | JP7315367B2 (en) |
| CN (1) | CN111823710B (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP7315367B2 (en) | 2023-07-26 |
| CN111823710B (en) | 2022-04-05 |
| JP2020179510A (en) | 2020-11-05 |
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