Optical Sensor for Printing Fluid Waste Container Level Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current systems lack an effective method to accurately detect the filling level of printing fluid waste containers in inkjet printers, leading to potential overflow and inefficiencies in waste management.
Innovation Solution
An optical sensor system that emits a signal onto a reference surface within the waste container reservoir, detecting the filling level by analyzing the reflected signal and providing alerts when the container reaches maximum capacity, integrated with a control unit to manage printing operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If no filling level detection system is installed, then the device complexity is low, but the reliability of waste management deteriorates due to potential overflow
Solution Approach 1:
The patent replaces complex mechanical level detection mechanisms with an optical sensing system. The optical sensor unit uses light emission and detection principles to measure filling levels, eliminating the need for mechanical float indicators or contact-based sensors, thereby maintaining high reliability while reducing mechanical complexity
Solution Approach 2:
The patent introduces an optical window as an intermediary element that allows optical signals to pass through the container wall for level detection. This intermediary enables non-contact measurement through the container wall, providing reliable detection without penetrating the container structure or requiring direct contact with the printing fluid
2Productivity
If manual checking of filling level is used, then the device complexity is low, but the loss of time increases due to frequent user intervention
Solution Approach 1:
The patent implements a feedback system where the optical sensor continuously monitors the filling level and sends signals to the control unit. When the printing fluid reaches a critical level, the system automatically generates replacement alerts, eliminating the need for manual checking and enabling continuous productive operation without time loss
Solution Approach 2:
The detection system performs self-monitoring of the waste container filling level without requiring user intervention. The optical sensor and control unit work autonomously to track and manage the filling status, freeing users to focus on productive printing tasks while the system manages waste monitoring automatically
3Measurement precision
If optical sensor unit is integrated into the system, then the measurement precision of filling level is improved, but the device complexity increases
Solution Approach 1:
The optical sensor unit is designed to perform multiple functions: detecting filling levels, determining when the container is full, and providing data for replacement alerts. This multi-functional design consolidates what could be separate complex subsystems into a single integrated unit, improving measurement precision without proportionally increasing overall device complexity
Solution Approach 2:
The optical window serves as an intermediary that simplifies integration by providing a dedicated pathway for optical signals through the container wall. This pre-configured interface reduces the complexity of sensor installation and signal transmission, enabling precise non-contact measurement without requiring complex penetration or contact mechanisms
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 system reliably detects the filling level, preventing overflow by alerting users when the container is full and ensuring timely replacement, thereby maintaining efficient printing operations.
Implementation Method 1
emitting an optical signal onto a reference filling surface of a reservoir of a printing fluid waste container; receiving a reflected optical signal; and from the reflected optical signal, detecting a filling level of the reservoir
Data Source
AI summary
A system for detecting a filling level in a printing fluid waste container comprises a waste container that collects excess printing fluid in a reservoir, and an optical sensor unit that detects a filling level of the reservoir on a filling reference surface.