Ink storage device with interlocking type liquid level detection function and liquid level detection method

Abstract

The invention discloses an ink storage device with an interlocking type liquid level detection function. The ink storage device comprises a liquid level detection device, an ink box assembly, a main ink barrel and a positive and negative pressure system. The ink box assembly comprises an ink box and an ink box cover, the ink box is communicated with the main ink barrel, and a liquid level detection device is arranged on the ink box assembly. The liquid level detection device comprises a capacitive interlocking sensor, a locking nut, a positive electrode wire, a negative electrode wire, a signal wire A, a signal wire B, an induction point and a controller, a rod body of the capacitive interlocking sensor is provided with threads and fixed to the ink box cover through the locking nut, the induction point is located at the bottom end of the rod body of the capacitive interlocking sensor and extends into the ink box, the positive electrode wire and the negative electrode wire are connected with a power supply, and the A signal wire and the B signal wire are connected with the controller. The ink storage device is simple in structure, convenient to install and easy to replace, can be suitable for liquid level detection of ink with different properties, is reliable in work, and can quickly and accurately position the cause of the problem when a fault occurs, thereby quickly removing the fault.

Description

technical field [0001] The invention relates to the technical field of digital inkjet printing, in particular to an ink storage device with interlocking liquid level detection and a liquid level detection method. Background technique [0002] In the field of digital inkjet equipment, there are generally two types of devices used to store ink in the ink system: the main ink tank and the ink cartridge, both of which are equipped with floating ball stainless steel sensors for liquid level monitoring. The main ink barrel is generally larger in size to provide ink, similar to a water storage tank for tap water. After the lack of ink, the floating ball stainless steel sensor will alarm, and the ink will be manually filled. The ink cartridge directly supplies ink to the print head. The floating ball stainless steel sensor detects that the ink cartridge is short of ink and then sends a command to the ink supply pump. The ink supply pump pumps ink from the main ink tank to the ink ca...

AI Technical Summary

Problems solved by technology

However, the low level 0 may also be triggered by a circuit break, and the high level 1 may also be triggered by a circuit short circuit. If A=0 is triggered due to a circuit break, and the actual ink cartridge is not short of ink, send an ink pumping command at this time. Ink replenishment will cause problems. Similarly, if A=1 is triggered due to a short circuit, and the actual ink cartridge is out of ink, it will also cause problems if the pump ink command cannot be sent to replenish ink at this time.

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