Needle Speed Control for Liquid Cartridge Sealing
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Solution Overview
Problem
Liquid ejection apparatuses experience leakage issues when the hollow needle penetrates or separates from the sealing member of a liquid cartridge at increased speeds, necessitating a solution to prevent ink leakage.
Innovation Solution
A liquid ejection apparatus with a detachable liquid cartridge that includes a memory to store data for controlling the speed of the hollow needle relative to the sealing member, using a reader and controller to manage the penetration and withdrawal speeds based on stored data to prevent leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the hollow needle penetrates or separates from the sealing member at increased speed, then the productivity of the liquid ejection apparatus is improved, but liquid leakage occurs from the liquid cartridge
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the penetration speed of the hollow needle based on stored data that determines optimal speed parameters. The controller modifies the movement speed parameter to prevent leakage while maintaining productivity, resolving the contradiction between fast penetration and reliable sealing.
2Speed
If the hollow needle penetrates the sealing member at high speed, then the operation speed is improved, but the sealing member may crack or deform
Solution Approach 1:
The patent implements feedback by using stored data from previous operations to determine optimal penetration speeds. The controller references this feedback information to adjust the needle movement speed, preventing excessive speeds that could crack or deform the sealing member while maintaining efficient operation.
3Loss of time
If the hollow needle penetrates or separates from the sealing member at increased speed, then the processing time is reduced, but liquid leakage occurs
Solution Approach 1:
The patent applies dynamics by making the penetration speed variable rather than fixed. The controller dynamically adjusts the speed based on stored operational data, allowing optimization of both penetration time and sealing reliability. This dynamic control enables faster penetration when conditions permit while preventing leakage when necessary.
Data Source
AI summary
A liquid ejection apparatus includes a liquid ejection head that ejects liquid, a hollow needle that communicates with the liquid ejection head, a moving mechanism that moves the hollow needle or a liquid cartridge such that the hollow needle penetrates a sealing member of the liquid cartridge, a reader that reads a data stored in a memory, and a controller that controls a speed of the hollow needle relative to the sealing member based on the data read by the reader.