Ink Server Autonomous Level Detection for Stable Supply

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Solution Overview

Problem

Existing ink supply systems face instability in ink delivery due to reliance on printer instructions for ink level detection, leading to potential ink depletion and supply interruptions when printers are powered off.

Innovation Solution

An ink server with integrated sensors, switching units, and a controller that autonomously detects ink state and manages supply, independent of printer power or instructions, ensuring continuous and stable ink delivery.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the ink server detects ink level based on printer instructions, then the system complexity is reduced, but the reliability of ink supply deteriorates when printer is powered off

Engineering Contradiction:
Improvesystem complexityVSAvoidink supply reliability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The ink server is equipped with a detection unit that autonomously detects the ink level in the ink cartridge without requiring external instructions from the printer. The server independently manages ink supply by detecting ink levels, determining remaining amounts, and controlling supply based on its own measurements, making the system self-sufficient and reliable even when the printer is powered off.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The ink server implements a feedback mechanism where the detection unit continuously monitors ink levels and provides real-time information to the control unit. This feedback loop enables the server to automatically adjust ink supply decisions based on current ink status, ensuring reliable operation independent of printer power state.

Inventive Principle:
Principle #23Feedback

2Ease of operation

If the ink server waits for printer instructions to detect ink level, then the ease of operation is improved, but the productivity of ink supply management deteriorates

Engineering Contradiction:
Improveoperation simplicityVSAvoidink supply management efficiency
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The ink server autonomously performs ink level detection and supply management without requiring manual instructions or active participation from the printer. The detection unit automatically monitors ink levels, and the control unit independently decides when and how much ink to supply, maximizing management efficiency while maintaining operational simplicity.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The ink server maintains continuous ink level monitoring through its autonomous detection unit, ensuring that ink supply management operates without interruption. This continuous operation eliminates waiting periods for printer instructions, thereby improving productivity while keeping the system easy to operate.

Inventive Principle:
Principle #20Continuity of useful action

Data Source

PatentEP3698975B1Ink server and ink supply system
Publication Date: 2023.03.08 SEIKO EPSON CORP
  • EP3698975B1 patent drawingFigure 1
  • EP3698975B1 patent drawingFigure 2
  • EP3698975B1 patent drawingFigure 3

AI summary

The ink server includes at least one ink storage unit that stores ink to be supplied to a printer, a switching unit that switches whether to supply the ink stored in the at least one ink storage unit to the printer, a detection unit that detects a state of the ink stored in the at least one ink storage unit, a controller that controls the switching unit and the detection unit, and a power supply circuit that supplies a power supply voltage to the switching unit, the detection unit, and the controller.