Memory Mounting Portion Adhesive Attachment for Cartridge Reliability

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Solution Overview

Problem

There is a need for a method to more reliably prevent a memory from falling off in a cartridge of an image forming apparatus.

Innovation Solution

A cartridge with a memory member that stores information and a supporting body with a memory mounting portion, where the memory member is mounted using adhesive between specific surfaces to ensure secure attachment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If adhesive is used to fix the memory to the frame body or component, then the memory mounting process is simplified, but the memory may fall off during operation

Engineering Contradiction:
Improvememory mounting processVSAvoidmemory attachment reliability
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The patent transitions from fixing the memory on a single surface (2D attachment) to fixing it at multiple surfaces including lateral surfaces (3D multi-point attachment). The memory is fixed at both the bottom surface and lateral surfaces, creating a multi-dimensional attachment structure that significantly improves reliability while maintaining ease of manufacture through the same adhesive application process.

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

Solution Approach 2:

The patent combines multiple attachment functions into a single adhesive application process. The adhesive simultaneously bonds the memory to the bottom surface and lateral surfaces, merging multiple fixation points into one unified attachment system. This approach maintains manufacturing simplicity while achieving superior attachment reliability through multi-surface bonding.

Inventive Principle:
Principle #5Merging (Combining)

2Device complexity

If the memory is mounted on a single surface, then the mounting process is simple, but the memory may fall off during cartridge replacement or maintenance

Engineering Contradiction:
Improvemounting structure complexityVSAvoidmemory retention during operation
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The invention adds lateral surface fixation to the traditional bottom-surface-only mounting approach. By extending the adhesive bonding to include lateral surfaces of the memory, the patent creates a multi-dimensional attachment structure that prevents memory detachment during cartridge replacement and maintenance operations, significantly improving reliability without substantially increasing structural complexity.

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

Solution Approach 2:

The patent applies adhesive to specific localized areas: the bottom surface and lateral surfaces of the memory. This localized multi-point attachment strategy provides targeted fixation at critical locations where the memory is most prone to detachment, achieving high reliability with minimal additional complexity in the mounting structure.

Inventive Principle:
Principle #3Local quality

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 solution effectively prevents the memory from falling off, ensuring reliable operation and maintenance of the image forming apparatus by securely mounting the memory member.

Implementation Method 1

the memory member is mounted on the memory mounting portion by arrangement of adhesive between the second surface and the first opposing portion and between the lateral surface and the second opposing portion

Methodology Applied
Scientific EffectAdhesive bonding: Adhesive

Data Source

PatentUS20250164928A1Cartridge including a memory mounting portion and image forming apparatus including the cartridge
Publication Date: 2025.05.22 CANON KK
  • US20250164928A1 patent drawing
  • US20250164928A1 patent drawing
  • US20250164928A1 patent drawing

AI summary

Disclosed is a cartridge attachable to an image forming apparatus body, the cartridge including: a memory member storing information relating to the cartridge; and a supporting body having a memory mounting portion on which the memory member is mounted, the memory member having a first surface, a second surface, and a lateral surface, the first surface is provided with a contact portion connected to a body electrode portion of the body of the image forming apparatus when the cartridge is installed in the body of the image forming apparatus, the memory mounting portion has a first opposing portion opposing the second surface and a second opposing portion opposing the lateral surface when the memory member is mounted, the memory member is mounted by adhesive between the second surface and the first opposing portion and between the lateral surface and the second opposing portion.