Printer Media Path Layout for Cross-Access Ink Container Storage

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Solution Overview

Problem

Conventional printing apparatuses face constraints in the arrangement of storage portions due to the need to avoid the conveyance path, leading to bulkiness and limited storage capacity.

Innovation Solution

The design allows the access path to the storage portion to cross a partial section of the conveyance path, enhancing the freedom of arrangement and capacity without increasing the apparatus size, with a detachable opening/closing member facilitating easy access and exchange of printing material containers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the access path to the storage portion avoids the conveyance path, then the conveyance of print medium is ensured, but the degree of freedom of arrangement of the storage portion is limited and the apparatus becomes bulky

Engineering Contradiction:
Improvedegree of freedom of arrangement of storage portionVSAvoidapparatus size
Core Design Contradiction:
Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The opening/closing member is made movable between an open state (allowing access to storage portion) and a closed state (forming part of the conveyance path). This dynamic transformation allows the same structure to serve dual functions: enabling storage access when open and maintaining conveyance path integrity when closed, thereby resolving the contradiction between storage accessibility and conveyance reliability without increasing apparatus volume

Inventive Principle:
Principle #15Dynamics

2Quantity of substance

If the access path to the storage portion avoids the conveyance path, then the conveyance path integrity is maintained, but the storage capacity is limited

Engineering Contradiction:
Improveprinting material storage amountVSAvoidarrangement constraint
Core Design Contradiction:
Quantity of substanceVSDevice complexity

Solution Approach 1:

The opening/closing member dynamically switches between blocking the conveyance path (when closed) and allowing access (when open). This enables the storage portion to be positioned in space that would otherwise be occupied by the conveyance path, effectively increasing storage capacity without adding apparatus complexity or violating conveyance path integrity

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The invention utilizes the temporal dimension by making the opening/closing member movable between states. The conveyance path and access path occupy the same spatial location at different times, allowing the storage portion to be arranged in three-dimensional space more efficiently, thereby increasing storage capacity without increasing device complexity

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

3Ease of operation

If the opening/closing member is detachable, then the ease of access to storage portion is improved, but the structural complexity increases

Engineering Contradiction:
Improveease of access to storage portionVSAvoidstructure of opening/closing member
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The opening/closing member is designed as a detachable, separable component that can be removed and reattached. This segmentation allows users to easily access the storage portion by simply detaching the member, improving ease of operation. The modular design actually reduces overall structural complexity compared to a fixed, integrated system that would require complex mechanisms for access

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP4725706A1Printing apparatus
Publication Date: 2026.04.15 CANON KK
  • EP4725706A1 patent drawingFigure 1
  • EP4725706A1 patent drawingFigure 2
  • EP4725706A1 patent drawingFigure 3

AI summary

A printing apparatus (1) includes a storage portion (4) configured to store a container (6) that stores a printing material to be applied to a print medium by printing means (10), conveyance means (80-84) arranged to convey the print medium along a conveyance path (RT), andan opening/closing member (5,5A,33) configured to open/close an access path (AR) that enables access to the storage portion (4). The opening/closing member (5,33) comprises a path forming member (52,33) arranged to form a partial section of the conveyance path (RT) crossing the access path (AR) in a state in which the access path (AR) is closed.