Data storage method of consumable chip, consumable chip and consumable

Abstract

The invention provides a data storage method of a consumable chip, the consumable chip and a consumable. The consumable chip is provided with a nonvolatile memory and a volatile memory, wherein initial data are stored in the nonvolatile memory, the initial data comprise authentication data and consumable initial record data, and the volatile memory is used for storing consumable usage record data.The method comprises the following steps that an operation instruction transmitted by a printer is received; the instruction type of the operation instruction is judged, if the operation instructionis a write instruction, whether written data is the consumable usage record data or not is judged, if yes, the written data are stored in the volatile memory, and if not, the written data are stored in the nonvolatile memory; and alternatively, if the operation instruction is the write instruction, the written data are stored in the volatile memory, whether the written data are the consumable usage record data or not is judged, if yes, the position for storing the data is not changed, and if not, other data written into the volatile memory is transferred to the nonvolatile memory.

Description

technical field [0001] The invention relates to the technical field of printing and imaging, in particular to a data storage method for a consumable chip, a consumable chip and consumables. Background technique [0002] With the popularization of office automation, printing equipment has become an indispensable equipment in office activities. During the printing process, consumables such as ink cartridges are needed. At present, consumables generally use chips as the medium for storing data, and the chips have non-volatile memory; after the non-volatile memory is powered off, the stored data will not be lost. During the process of using consumables, the printer writes unique data (such as printer ID, customer data, consumables usage record data, etc.) into the consumables chip, and the chip stores the data in a non-volatile memory. [0003] After the consumables are loaded into the printer, if the printer fails and the customer wants to install the consumables on other prin...

AI Technical Summary

Problems solved by technology

[0003] After the consumables are loaded into the printer, if the printer fails and the customer wants to install the consumables on other printers, the consumables have communicated with the printer, so the consumables chip will store the used printer ID, and the printer ID is Unique to each printer, this causes other printers to have ID mismatches when communicating with the used consumables, resulting in the inability to use the consumables normally again

Moreover, when the consumables are loaded into the printer and used for a period of time, if the printer breaks down and the customer wants to install the consumables on other printers for use, since the consumable chips are written into the relevant usage data of the consumables (such as the consumption of printing consumables, the installation logo of consumables, etc.) ), after the consumables are replaced to other printers, the printer detects the above relevant usage data and considers that the consumables have been used and cannot be used again

In addition, when the consumables are used, the consumable chips store unique data. After the customer's consumables are recycled, the customer data stored on the chip may be maliciously read, resulting in data leakage

[0004] The occurrence of the above-mentioned use failures leads to the unused consumables being unable to be used again, resulting in a waste of resources; in addition, after the consumables are used, there is a risk of leaking customer data

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