Inkjet Channel Member Parallel Section Design

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Solution Overview

Problem

Conventional inkjet channel members often have low size precision of openings on the outlet side, leading to inaccuracies in inkjet head structures used in printing devices.

Innovation Solution

A channel member design with a channel penetrating from one main surface to another, featuring a larger opening diameter on the second main surface and an inner surface with a parallel section parallel to the second main surface, enhancing size precision and ink discharge stability through precise manufacturing methods.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a conventional channel member is manufactured by baking a compact, then the manufacturing process is simple, but the size precision of the opening on the outlet side becomes low

Engineering Contradiction:

Improvesize precision of openingVSAvoidmanufacturing process complexity

Core Design Contradiction:

Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The patent applies preliminary action by forming a parallel section on the inner surface of the channel before the baking process. This pre-formed parallel section serves as a structural constraint that guides the deformation behavior during baking, ensuring that the opening on the outlet side achieves high size precision while maintaining manufacturing simplicity. The parallel section is created in advance to control the final dimensional accuracy without adding complex post-processing steps.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If the opening diameter on the outlet side is made larger, then ink discharge stability is improved, but the channel member size increases

Engineering Contradiction:

Improveink discharge stabilityVSAvoidchannel member size

Core Design Contradiction:

ReliabilityVSLength of stationary object

Solution Approach 1:

The patent applies local quality by creating a parallel section at a specific location on the inner surface of the channel, rather than making the entire channel member larger. This localized structural feature provides the necessary ink discharge stability through its geometric constraints, while keeping the overall channel member size compact. The parallel section is strategically positioned to influence flow characteristics without proportionally increasing the entire component dimensions.

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 design improves size precision and reduces ink discharge variability, leading to more stable and precise ink droplet formation and reduced printing time by minimizing pressure wave interference.

Implementation Method 1

minimizing pressure wave interference

Methodology Applied

Scientific EffectPressure wave interference:

Data Source

PatentUS8550605B2Channel member, inkjet head structure and inkjet recording device

Publication Date: 2013.10.08 KYOCERA CORP

AI summary

Provided is a channel member having a channel which penetrates from one main surface to the other main surface. The channel is formed with its diameter increased toward the other main surface from the one main surface. A parallel section which is substantially parallel to the other main surface and is exposed to the other main surface is provided on the inner surface of the channel.