Ink Tank Light-Guiding Portion for Position Authentication and Status Display
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Solution Overview
Problem
Existing ink tank systems face challenges in simultaneously ensuring accurate position authentication and user-friendly visual notification of ink status without increasing the cost and size of the inkjet recording apparatus, as the light output for position authentication and display purposes often contradict each other in terms of directional characteristics.
Innovation Solution
The ink tank incorporates a light-guiding portion with a distinct output surface for position authentication and a display surface for user notification, allowing the light to be diffused for easy visual recognition by the user while maintaining high directional characteristics for accurate authentication, using a translucent light-guiding member with a reflection surface to separate and concentrate light paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the light is diffused for user visual recognition, then the user can easily recognize the light information from any angle, but the position authentication accuracy deteriorates because the light-receiving portion cannot reliably detect the light from the ink tank at the erroneous position
Solution Approach 1:
The light-guiding member is divided into two distinct functional regions: a display surface with light-diffusing properties for user notification, and an output surface with light-outputting properties for position authentication. This segmentation allows each region to optimize its light interaction characteristics independently, resolving the contradiction between diffusion for visibility and directionality for authentication accuracy.
Solution Approach 2:
Different regions of the light-guiding member are assigned different optical qualities: the display surface has high light-diffusing capability to enable viewing from multiple angles, while the output surface maintains high light-outputting efficiency for reliable authentication detection. This local differentiation of optical properties allows both contradictory requirements to be satisfied in their respective locations.
2Loss of information
If a display is provided on the main body to show ink tank status information, then the user can recognize the information, but the inkjet recording apparatus increases in cost and size, and design is impacted
Solution Approach 1:
The ink tank itself serves as the display device by incorporating a light-guiding member that visually presents status information (mounting position, ink remaining amount) directly on the tank. This eliminates the need for a separate display on the main body, allowing the ink tank to provide its own information display function without increasing overall apparatus complexity.
Solution Approach 2:
The light-guiding member serves multiple functions simultaneously: it guides light for position authentication, displays status information to users, and notifies users of mounting errors. This multi-functionality consolidates what would otherwise require separate components, avoiding increases in apparatus cost and size while maintaining information display capability.
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 enables reliable position authentication and user-friendly visual notification of ink status, preventing erroneous mounting while maintaining the apparatus's design integrity and cost-effectiveness.
Implementation Method 1
a light-guiding portion for guiding light emitted from the light-emitting portion
Implementation Method 2
using a translucent light-guiding member with a reflection surface to separate and concentrate light paths
Implementation Method 3
Processing for diffusing the light is performed on the display portion formed of a part of the light-guiding member
Data Source
AI summary
An ink tank includes a light-emitting portion and a light-guiding portion for guiding light emitted from the light-emitting portion, wherein the light-guiding portion includes an output portion configured to output the guided light to project individual information about the ink tank and a display portion formed on a side surface different from the output portion and configured to display information about a status of the ink tank by outputting the guided light.