Multi-Bay Inkjet Vehicle Livery for Large-Surface Printing

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Solution Overview

Problem

Existing spray painting methods for applying livery on transportation equipment, such as aircraft, are costly due to infrastructure requirements, time-consuming, and inefficient in covering large surfaces with complex features, and limited in color resolution and agility.

Innovation Solution

A multi-bay system utilizing crossflow or downflow air handling, explosion-proof equipment, and inkjet printing technology for surface preparation, printing, and clear-coating, allowing for 360° printing and accommodating obstructions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If spray painting is used to apply livery, then coverage of large surfaces is achieved, but infrastructure costs increase due to air filtration and explosion proof equipment requirements

Engineering Contradiction:

Improvesurface coverage areaVSAvoidinfrastructure cost

Core Design Contradiction:

Area of stationary objectVSEase of manufacture

Solution Approach 1:

The patent replaces the spray painting mechanical system with an inkjet printing system. Inkjet printing uses digitally controlled inkjet heads to deposit paint directly onto the surface, eliminating the need for spray booths, air filtration systems, and explosion-proof equipment while achieving complete surface coverage.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the fundamental parameters of the painting process by transitioning from aerosol-based spray painting to liquid inkjet deposition. This parameter change allows paint application without requiring controlled air environments or special safety infrastructure, reducing manufacturing costs while maintaining large area coverage capability.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If spray painting operations are performed sequentially (preparation, painting, clear coating), then complete livery application is achieved, but time requirements increase

Engineering Contradiction:

Improvelivery application completenessVSAvoiddrying time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent implements continuous inkjet printing operations that can apply multiple coats and clear coats without requiring drying time between steps. The inkjet system maintains continuous operation, eliminating the idle drying periods inherent in spray painting processes while ensuring complete and durable livery application.

Inventive Principle:

Principle #20Continuity of useful action

Solution Approach 2:

The patent applies preliminary surface preparation treatments that enable subsequent inkjet printing layers to adhere properly without requiring extended drying or curing times. The surface is pre-treated to accept inkjet-deposited paint immediately, allowing continuous processing through multiple layers without time loss.

Inventive Principle:

Principle #10Preliminary action

3Area of stationary object

If spray paint equipment is repositioned to cover entire vehicle surface, then complete coverage is achieved, but productivity decreases due to equipment movement time

Engineering Contradiction:

Improvetotal surface coverageVSAvoidequipment repositioning time

Core Design Contradiction:

Area of stationary objectVSProductivity

Solution Approach 1:

The patent divides the painting system into multiple stationary inkjet printing stations positioned at different locations around the vehicle. Each station handles a specific zone, eliminating the need to reposition equipment while achieving complete surface coverage through coordinated operation of segmented printing zones.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent transitions from linear spray painting along the vehicle surface to three-dimensional positioning of multiple inkjet stations around the vehicle. This spatial arrangement in multiple dimensions allows simultaneous printing on different surfaces without equipment movement, dramatically improving productivity while maintaining complete coverage.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

4Extent of automation

If traditional robotic manipulators are used for spray painting, then automation is achieved, but manufacturing precision decreases due to difficulty accommodating obstructions

Engineering Contradiction:

Improvepainting automationVSAvoidedge resolution

Core Design Contradiction:

Extent of automationVSManufacturing precision

Solution Approach 1:

The patent replaces traditional robotic spray painting manipulators with a specialized inkjet printing system that uses digitally controlled inkjet heads mounted on precision rails. This substitution enables automated printing with high edge resolution by precisely controlling inkjet droplet placement around obstructions like lights and antennas, maintaining automation while improving manufacturing precision.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

5Reliability

If spray painting is used, then livery application is achieved, but measurement precision decreases due to constraints on edge resolution and minimum feature size

Engineering Contradiction:

Improvelivery applicationVSAvoidedge resolution

Core Design Contradiction:

ReliabilityVSMeasurement precision

Solution Approach 1:

The patent changes the physical parameters of paint deposition by using inkjet technology that can place individual droplets with precise control over position, size, and spacing. This parameter change enables high edge resolution and accurate rendering of small features that are impossible to achieve with spray painting, while maintaining reliable livery application.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent replaces the aerosol-based spray painting mechanism with digital inkjet deposition. This substitution allows precise computer-controlled placement of paint droplets, achieving superior edge resolution and minimum feature size control compared to the diffuse nature of spray painting, while ensuring complete and reliable livery application.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

Reduces infrastructure costs and time, enhances color resolution and agility, and efficiently applies durable livery on large vehicles with complex features.

Implementation Method 1

inkjet printing at least the portion of the exterior surface of the vehicle in a second bay

Methodology Applied

Scientific EffectInkjet printing:

Implementation Method 2

clear-coating at least the portion of the exterior surface of the vehicle in a third bay

Methodology Applied

Scientific EffectClear-coating:

Implementation Method 3

using crossflow or downflow air handling

Methodology Applied

Scientific EffectCrossflow air handling:

Implementation Method 4

using crossflow or downflow air handling

Methodology Applied

Scientific EffectDownflow air handling:

Data Source

PatentUS12403495B2Inkjet printing vehicle livery

Publication Date: 2025.09.02 THE BOEING CO

AI summary

The present disclosure includes a method and apparatus for changing livery on a vehicle. A method of inkjet printing an exterior surface of a vehicle, includes preparing at least a portion of the exterior surface of the vehicle in a first bay using crossflow or downflow air handling and using explosion protected equipment. That method includes inkjet printing at least the portion of the exterior surface of the vehicle in a second bay. This method includes clear-coating at least the portion of the exterior surface of the vehicle in a third bay using downflow or crossflow air handling, using air filtration and using explosion protected equipment.