Printing Ink Reservoir Pressure Control with Early Air-Pipe Detection
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Solution Overview
Problem
Ink overflow and air bubbles from the reservoir tank to the air pipe can contaminate the printing apparatus, leading to ink leakage and floor contamination due to the breakdown of the printing apparatus or air mixing with the ink, which affects the application of pressure to the reservoir tank.
Innovation Solution
A sensor is provided in the air pipe connecting the reservoir tank and pressure generator to detect ink or air bubbles before they reach the air filter, preventing contamination by detecting and addressing the overflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a pressure generator and reservoir tank are connected via an air pipe with an air filter to control negative pressure and optimize meniscus shape, then ink discharge is improved, but ink or air bubbles may overflow to the air pipe and wet the air filter, causing pressure loss and ink leakage
Solution Approach 1:
The sensor detects ink or air bubbles in the air pipe before they reach the air filter, allowing preliminary action to be taken to prevent the harmful effect of wetting the air filter and losing pressure control
2Object-affected harmful factors
If an air filter is provided in the air pipe to prevent foreign matter mixing, then system cleanliness is improved, but ink or air bubbles reaching the air filter causes pressure generator failure to apply pressure
Solution Approach 1:
The sensor provides early warning before ink or air bubbles reach the air filter, enabling preliminary response to maintain pressure application reliability
Solution Approach 2:
The sensor acts as an intermediary detection device between the air pipe and air filter, detecting the presence of ink or air bubbles before they can wet the air filter and cause pressure loss
3Productivity
If the air pipe is used to apply pressure to the reservoir tank, then ink feed control is improved, but ink overflow to the air pipe causes contamination of the printing apparatus and floor
Solution Approach 1:
The sensor detects ink overflow in the air pipe before it reaches the air filter, enabling preliminary action to prevent ink from wetting the air filter and causing contamination of the printing apparatus and floor
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The sensor effectively prevents ink or air bubbles from reaching the air filter, maintaining the pressure application to the reservoir tank and preventing ink leakage and contamination.
Implementation Method 1
a sensor which detects the ink or air bubbles in the first air pipe between the first reservoir tank and the first air filter
Implementation Method 2
an air filter which is provided in the air pipe between the reservoir tank and the pressure generator and removes foreign matters from air in the air pipe
Implementation Method 3
a pressure generator and the reservoir tank are allowed to communicate by an air pipe, and a pressure generated by the pressure generator is applied to the reservoir tank via the air pipe
Data Source
AI summary
The sensor is provided which detects the ink or air bubbles in the pressure transmission pipe between the supply tank and the air filter. Therefore, the overflow of the ink or air bubbles to the pressure transmission pipe connecting the supply tank and the pressure generator can be detected before these reach the air filter provided in the pressure transmission pipe.