MPU chip or MCU chip

Abstract

The invention relates to the technical field of printers, in particular to an MPU chip or an MCU chip which can verify whether a user uses a non-original cracking circuit or original ink or not so as to improve the anti-cracking capability of a printer or an ink box (namely a printing material box). The MPU or MCU chip comprises a frequency divider used for generating a target thermal pulse signal; the clock chip RTC or the crystal oscillator is used for generating a target clock signal; the latch-comparator circuit is used for generating a target voltage threshold signal; the detection signal comprises at least one of a target thermal pulse signal, a target clock signal and a target voltage threshold signal; the operation unit is used for operating a corresponding reference result according to the detection signal; and whether the target object is original or not is identified by comparing the detection result output by the residual liquid detection unit with the reference result.

Description

technical field [0001] The present application relates to the technical field of printers, in particular to an MPU chip or an MCU chip. Background technique [0002] Generally, the printer is equipped with a residual liquid level detection circuit (ie, a liquid residual detection unit), which is used to detect the position of the residual liquid of the printing material (such as printing ink) in the printing material box (also called printing box, toner cartridge, ink cartridge, etc.). At present, some users use non-original ink cartridges instead of original ones, and non-original ink cartridges use cracked residual liquid level detection circuits to deal with printer ink level detection. However, cracked residual liquid level detection circuits are often different from original printers. Matching, so that the printer cannot accurately predict the amount of ink remaining, resulting in damage to the printer or a reduced lifespan. [0003] In view of this, there is an urgent...

AI Technical Summary

Problems solved by technology

At present, some users use non-original ink cartridges instead of original ones, and non-original ink cartridges use cracked residual liquid level detection circuits to deal with printer ink level detection. However, cracked residual liquid level detection circuits are often different from original printers. Matching, so that the printer cannot accurately predict the remaining ink level, resulting in damage to the printer or a reduced lifespan

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