Leveling Section in Liquid Ejecting Apparatus

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Solution Overview

Problem

Existing liquid ejecting apparatuses face challenges in efficiently leveling a medium after pretreatment liquid application without increasing the apparatus size, as they typically require separate sections for pretreatment, image formation, and leveling, which can lead to size increments and interference issues.

Innovation Solution

Incorporating a leveling section within the holding section of the liquid ejecting apparatus, allowing the medium to be leveled efficiently during reciprocating movements, with multiple leveling sections on either side of the ejecting section, and configuring the movement to prevent interference and ensure effective leveling without disrupting image formation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate sections for pretreatment, image formation, and leveling are used, then each function can be performed independently, but the apparatus size increases

Engineering Contradiction:
Improvefunctional independenceVSAvoidapparatus size
Core Design Contradiction:
ReliabilityVSVolume of moving object

Solution Approach 1:

The patent combines the leveling section with the image forming ejecting section by providing the leveling section in the holding section that holds the ejecting section. This integration allows both functions to share the same spatial structure, reducing overall apparatus size while maintaining functional capabilities through coordinated operation during reciprocating movements

Inventive Principle:
Principle #5Merging (Combining)

2Productivity

If multiple leveling sections are provided on either side of the ejecting section, then leveling efficiency increases, but device complexity increases

Engineering Contradiction:
Improveleveling efficiencyVSAvoidsection configuration
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The leveling section is divided into multiple independent leveling units that can be provided on either side of the ejecting section. Each leveling unit operates independently during reciprocating movements, allowing parallel leveling actions that increase efficiency while maintaining manageable complexity through modular design

Inventive Principle:
Principle #1Segmentation

3Volume of moving object

If the leveling section is integrated within the holding section, then apparatus size is reduced, but interference during image formation may occur

Engineering Contradiction:
Improveapparatus sizeVSAvoidinterference during image formation
Core Design Contradiction:
Volume of moving objectVSObject-affected harmful factors

Solution Approach 1:

The leveling section is configured to operate dynamically during reciprocating movements of the holding section. By coordinating the timing and position of leveling actions with the reciprocating cycle, the system integrates leveling functionality without creating interference during image formation, as the leveling section moves with the ejecting section in a controlled manner

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP3434489B1Liquid ejecting apparatus
Publication Date: 2020.06.17 SEIKO EPSON CORP
  • EP3434489B1 patent drawingFigure 1
  • EP3434489B1 patent drawingFigure 2
  • EP3434489B1 patent drawingFigure 3

AI summary

A liquid ejecting apparatus includes a supporting section configured to support a medium; a first ejecting section capable of ejecting a pretreatment liquid onto the medium supported by the supporting section; a first holding section configured to hold the first ejecting section; and a leveling section provided on the first holding section and being capable of moving between a leveling position in contact with an ejection region to which the pretreatment liquid is ejected and a non-leveling position in non-contact with the ejection region of the medium. The liquid ejecting apparatus with such a configuration levels the medium, onto which the pretreatment liquid is applied, in an efficient manner.