Hard Imaging Device Non-Aqueous Carrier Transfer

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Current hard imaging devices face inefficiencies in forming high-quality images on various media types, particularly due to limitations in inkjet printing technologies which often require extensive drying processes and are constrained by the use of aqueous carriers, leading to power-intensive operations and restricted media compatibility.

Innovation Solution

The implementation of a hard imaging device utilizing an inkjet print head with a non-aqueous liquid carrier and a transfer member that receives and processes droplets of a liquid marking agent, where the liquid carrier is removed through a combination of physical and thermal processes, allowing for efficient transfer of ink particles to media, thereby enhancing image formation and expanding media compatibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If aqueous carriers are used in inkjet printing, then print quality can be achieved, but power consumption increases and media compatibility is restricted

Engineering Contradiction:
Improveprint qualityVSAvoidpower consumption
Core Design Contradiction:
Manufacturing precisionVSUse of energy by moving object

Solution Approach 1:

The patent changes the fundamental parameter of the liquid carrier from aqueous (water-based) to non-aqueous (solvent-based). This parameter change allows the liquid carrier to evaporate more quickly and efficiently, reducing the power needed for drying while expanding compatibility with various media types including glossy and coated surfaces.

Inventive Principle:
Principle #35Parameter changes

2Manufacturing precision

If aqueous carriers are used in inkjet printing, then print quality can be achieved, but media compatibility is restricted

Engineering Contradiction:
Improveprint qualityVSAvoidmedia compatibility
Core Design Contradiction:
Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The patent changes the fundamental parameter of the liquid carrier from aqueous (water-based) to non-aqueous (solvent-based). This parameter change allows the liquid carrier to evaporate more quickly and efficiently, reducing the power needed for drying while expanding compatibility with various media types including glossy and coated surfaces.

Inventive Principle:
Principle #35Parameter changes

3Manufacturing precision

If extensive drying processes are used, then image quality can be improved, but processing time increases

Engineering Contradiction:
Improveimage qualityVSAvoidprocessing time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent changes the fundamental parameter of the liquid carrier from aqueous (water-based) to non-aqueous (solvent-based). This parameter change allows the liquid carrier to evaporate more quickly and efficiently, reducing the power needed for drying while expanding compatibility with various media types including glossy and coated surfaces.

Inventive Principle:
Principle #35Parameter changes

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

This approach results in power savings, improved print quality, and the ability to use a wider range of media, including glossy and coated surfaces, while reducing strikethroughs and media expansion, making the process more efficient and commercially viable.

Implementation Method 1

controlling a print device to eject a plurality of droplets of a liquid marking agent corresponding to the image to be formed

Methodology Applied
Scientific EffectInkjet ejection:

Implementation Method 2

receiving the droplets of the liquid marking agent upon a transfer member; and after the receiving, transferring the ink particles of the droplets from the transfer member to media

Methodology Applied
Scientific EffectTransfer:

Implementation Method 3

the liquid carrier is removed through a combination of physical and thermal processes

Methodology Applied
Scientific EffectEvaporation: Evaporation

Data Source

PatentEP3508346B1Hard imaging device
Publication Date: 2022.11.30 HEWLETT PACKARD DEVELOPMENT COMPANY LP
  • EP3508346B1 patent drawingFigure 1~2
  • EP3508346B1 patent drawingFigure 3
  • EP3508346B1 patent drawingFigure 4~4A

AI summary

Hard imaging device comprising: a print device to eject a plurality of droplets of a liquid marking agent, the droplets of the liquid marking agent individually comprising a plurality of ink particles within a non-aqueous carrier fluid; a control device to control the print device to eject the droplets of the liquid marking agent corresponding to an image to be formed; and a transfer member adjacent to the print device and to receive the droplets of the liquid marking agent ejected by the print device, wherein the transfer member (12) is to transfer the ink particles of the droplets from the transfer member to media to form a hard version of the image using the media; wherein the transfer member (12) includes a release layer (30), a soft layer (32) and a base layer (34) wherein the soft layer (32) has a lower resistivity than the release layer (30).