Dual Reservoir Printer Ink Refill System
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Solution Overview
Problem
Printing devices face inefficiencies due to the need to halt production for ink refills and are prone to failure from shocks, subassembly issues, and electronic damage, leading to increased downtime and maintenance costs.
Innovation Solution
A system comprising a first reservoir, a second reservoir, a pump, and a controller that allows for continuous operation during refills by controlling the pump's duty cycle and valve operation to assess and maintain the status of the second reservoir, enabling smart failure recognition and self-diagnosis without user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the device halts production to change empty ink supplies, then the refilling operation can be performed, but productivity decreases and downtime increases
Solution Approach 1:
The system performs preliminary actions by monitoring ink levels and automatically initiating refilling operations before the ink supply is completely depleted. The controller detects when the second reservoir needs refilling and activates the pump to transfer ink from the first reservoir, ensuring continuous operation without production halts.
Solution Approach 2:
The device performs self-service through automatic ink level monitoring and self-refilling capabilities. The controller continuously monitors the ink level in the second reservoir and automatically activates the pump to refill it from the first reservoir, eliminating the need for manual intervention and production stoppage.
2Productivity
If the device operates continuously without halting for refills, then productivity is maintained, but the complexity of the refilling control system increases
Solution Approach 1:
The system implements feedback through sensors that continuously monitor ink levels in the reservoirs and provide real-time data to the controller. The controller uses this feedback to automatically activate the pump when refilling is needed and to deactivate it when the second reservoir is sufficiently filled, maintaining continuous production with controlled complexity.
Solution Approach 2:
The patent replaces manual mechanical refilling operations with an automated electromechanical system. The controller electronically monitors ink levels and activates the pump motor automatically, substituting the complex manual coordination required for continuous operation with a simpler automated control system.
3Device complexity
If manual monitoring and refilling is performed, then device complexity is low, but loss of time occurs during refilling operations
Solution Approach 1:
The device performs self-service by automatically monitoring ink levels and initiating refilling operations without requiring manual intervention. The controller continuously checks the second reservoir's ink level and automatically activates the pump to refill it from the first reservoir, eliminating the time loss associated with manual refilling operations.
Solution Approach 2:
The system maintains continuity of useful action by ensuring the refilling process occurs automatically during device operation. The pump transfers ink from the first to the second reservoir without interrupting production, and the controller manages the entire process continuously, eliminating downtime while keeping the system relatively simple.
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
This solution enhances printer availability, productivity, and cost savings by allowing refills without stopping production, reducing downtime, and facilitating proactive maintenance through clear failure mode messages and smart failure recognition.
Implementation Method 1
a pump to pump the printable composition from the first reservoir to refill the second reservoir
Data Source
Figure 1
Figure 2
Figure 3A~3C
AI summary
An example device in accordance with an aspect of the present disclosure includes a first reservoir for a printable composition, a pump fluidically coupled to the first reservoir and a second reservoir, and a valve to prevent backflow from the second reservoir to the pump. The valve is to selectively isolate the second reservoir from the pump based on a threshold pump pressure under which the valve is to close.