Modular Ink Supply Unit Layout for Compact Stable Liquid Flow

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing inkjet recording apparatuses lack a modular and efficient system for attaching and detaching ink supply and collection tanks, which are independent of a box-like ink tank guide, limiting flexibility and increasing the size of the apparatus.

Innovation Solution

A detachable liquid supply unit comprising a support that attaches to an apparatus body, incorporating a supply tank and a collection tank, allowing for easy mounting and detachment, and includes a frame structure that optimizes space usage and maintains pressure differentials for stable liquid flow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the supply tank and collection tank are made independent and detachable from the apparatus body, then the flexibility and ease of maintenance are improved, but the device complexity increases due to the need for separate support structures and attachment mechanisms

Engineering Contradiction:
Improveease of maintenanceVSAvoiddevice complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent combines the supply tank, collection tank, and support structure into an integrated liquid supply unit. This merging allows the tanks to be detachable from the apparatus body while sharing common support structures and attachment mechanisms, thereby improving ease of maintenance without proportionally increasing device complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The liquid supply unit is designed as a separate modular component that can be detached from the apparatus body. This segmentation enables independent maintenance and replacement of the tank system without affecting the main recording apparatus, improving ease of maintenance while the shared support structure minimizes the increase in overall device complexity.

Inventive Principle:
Principle #1Segmentation

2Volume of moving object

If the supply tank and collection tank are positioned close to each other to reduce apparatus size, then the volume of the apparatus is reduced, but the stability of liquid flow may be compromised due to interference between the tanks

Engineering Contradiction:
Improveapparatus sizeVSAvoidliquid flow stability
Core Design Contradiction:
Volume of moving objectVSReliability

Solution Approach 1:

The patent positions the supply tank and collection tank in different spatial dimensions and orientations, with the supply tank extending in a first direction and the collection tank extending in a second direction different from the first. This dimensional arrangement allows close positioning for compact volume while maintaining separate liquid flow paths that prevent interference, thus preserving liquid flow stability.

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

Solution Approach 2:

The patent applies different structural characteristics to different parts of the tank system. The supply tank and collection tank have different extension directions and are supported at different locations on the support structure. This local differentiation allows optimized spatial arrangement for compact volume while maintaining independent, stable liquid flow paths for each tank.

Inventive Principle:
Principle #3Local quality

3Adaptability or versatility

If the tanks are attached to a support structure that extends in multiple directions, then the adaptability and versatility of the liquid supply unit are improved, but the manufacturing complexity increases

Engineering Contradiction:
ImproveadaptabilityVSAvoidmanufacturing complexity
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The support structure is designed with multiple extension directions and universal attachment capabilities that can accommodate different tank configurations and orientations. This multi-functional support structure provides adaptability for various liquid supply unit arrangements while being manufactured as a single integrated component, balancing versatility with manufacturing simplicity.

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

Data Source

PatentEP4721982A1Liquid supply unit, recording device provided with same, and method for attaching liquid supply unit
Publication Date: 2026.04.08 KYOCERA CORP
  • EP4721982A1 patent drawingFigure 1
  • EP4721982A1 patent drawingFigure 2
  • EP4721982A1 patent drawingFigure 3

AI summary

A liquid supply unit includes a supply tank that stores a liquid to be supplied to a supply destination, a collection tank that stores the liquid collected from the supply destination, and a support that supports the supply tank and the collection tank. The support is detachably attachable to an apparatus body including the supply destination.