Printing Cartridge Identification Layout for Easy Reuse

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Solution Overview

Problem

Existing printing material cartridges are difficult to reuse due to the integration of the circuit substrate with the outer covering, making removal and reutilization cumbersome.

Innovation Solution

A printing material cartridge with an identification portion that is optically readable and a protruding portion to trigger a notification mechanism upon complete mounting, facilitating easy reuse.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the circuit substrate is attached to the outer covering of the cartridge, then the structural integrity and reliability are improved, but the ease of reuse deteriorates because the substrate cannot be easily removed

Engineering Contradiction:
Improvestructural integrityVSAvoidease of reuse
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The cartridge is divided into separable components: the case with outer covering, the circuit substrate, and the identification portion. The identification portion is detachably attached to the case, allowing it to be removed and reused with different cartridges while maintaining structural integrity during use.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different parts of the cartridge have different attachment characteristics. The circuit substrate is firmly attached to ensure reliability, while the identification portion uses a detachable attachment method (adhesive, snap-fit, or screw) that allows easy removal and reuse without compromising the overall structural integrity.

Inventive Principle:
Principle #3Local quality

2Loss of information

If the identification portion is placed on the cartridge, then the identification capability is improved, but the device complexity increases due to additional components

Engineering Contradiction:
Improveidentification capabilityVSAvoiddevice complexity
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The identification portion serves multiple functions: it identifies the cartridge type, stores usage information, and can be reused across different cartridges. This multi-functionality reduces the need for separate identification systems and simplifies the overall device complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The identification portion can be detached and copied to different cartridges, allowing the same identification data to be used across multiple cartridges without requiring unique identification systems for each cartridge.

Inventive Principle:
Principle #26Copying

3Speed

If the reading portion is positioned inside the cartridge mounting portion, then the reading speed is improved during insertion, but the measurement precision may deteriorate due to limited optical access

Engineering Contradiction:
Improvereading speedVSAvoidoptical reading precision
Core Design Contradiction:
SpeedVSMeasurement precision

Solution Approach 1:

The identification portion is positioned on the outer surface of the case, allowing the reading portion to access it from the outside during insertion. This spatial arrangement enables both fast reading during quick insertion and sufficient optical access for accurate reading without requiring complex internal positioning.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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

Enables easy identification and notification of completed mounting, allowing for efficient reuse of the cartridge.

Implementation Method 1

an identification portion formed at a readable position that is optically readable by a reading portion formed inside the cartridge mounting portion

Methodology Applied
Scientific EffectOptical reading: Light

Data Source

PatentUS12479210B2Printing material cartridge with identification portion readable by printing apparatus and printing system
Publication Date: 2025.11.25 SEIKO EPSON CORP
  • US12479210B2 patent drawing
  • US12479210B2 patent drawing
  • US12479210B2 patent drawing

AI summary

A printing material cartridge mounted by being inserted into a cartridge mounting portion of a printing apparatus, includes: an identification portion on which identification information for identifying the printing material cartridge is recorded, in which the identification portion is formed at a readable position that is optically readable by a reading portion formed inside a cartridge mounting portion of the printing apparatus in an insertion process of inserting the printing material cartridge into the cartridge mounting portion.