Modular Primer Roller Sleeves for Print Press Reconfiguration

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Solution Overview

Problem

Industrial print presses face challenges in accommodating varying substrate materials, thicknesses, and print patterns, particularly in efficiently applying primer layers inline without the need for dedicated, specifically manufactured rollers.

Innovation Solution

The implementation of a modular primer apparatus with interchangeable priming rollers, featuring a spindle, roller core, and elastically deformable annular sleeves, allows for adaptable substrate priming configurations. This setup includes a fluid supply system for positioning and securing the sleeves, enabling quick changes between print jobs without extensive downtime.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If dedicated specifically manufactured rollers are used for different substrates and print patterns, then the priming precision and substrate compatibility are improved, but the device complexity and inventory management burden increase

Engineering Contradiction:
Improvesubstrate compatibilityVSAvoidroller inventory management
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The roller is divided into a core component and interchangeable sleeve members. The core provides structural support while the sleeves provide substrate-specific priming characteristics. This segmentation allows different sleeves to be swapped on the same core to accommodate different substrates and print patterns, reducing the need for multiple complete rollers.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A single roller core can accommodate multiple types of sleeves, making one roller assembly capable of handling multiple substrate types and print patterns. The universal core design with standardized mounting allows different sleeves to be interchanged, providing multi-functionality without requiring separate dedicated rollers for each application.

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

2Productivity

If interchangeable sleeves are implemented for different print jobs, then the productivity and setup speed are improved, but the manufacturing precision and assembly complexity increase

Engineering Contradiction:
Improvesetup speedVSAvoidsleeve positioning accuracy
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The sleeves are pre-manufactured with precise dimensions and mounting features. The core is pre-equipped with standardized mounting mechanisms. This preliminary preparation ensures that when sleeves are quickly swapped between print jobs, they achieve accurate positioning and secure attachment without requiring complex assembly procedures during changeover.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The core acts as an intermediary between the sleeve members and the roller apparatus. It provides a standardized interface that simplifies the attachment and detachment process. The core's mounting mechanisms mediate the connection, ensuring precise positioning and secure fixation of different sleeves while enabling rapid interchangeability.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Adaptability or versatility

If modular primer apparatus with interchangeable components is used, then the adaptability and reconfiguration flexibility are improved, but the device complexity and initial manufacturing cost increase

Engineering Contradiction:
Improvereconfiguration flexibilityVSAvoidinitial manufacturing cost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The primer apparatus is segmented into modular components including the core, interchangeable sleeves, and fluid supply system. This segmentation allows independent manufacturing and assembly of components, enabling flexible reconfiguration for different print jobs while potentially reducing overall manufacturing complexity through standardized parts.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The modular design with universal core and interchangeable sleeves creates a multi-functional primer apparatus that can handle various substrates and print patterns. Instead of manufacturing multiple complete rollers, the system uses one core with multiple reusable sleeves, reducing initial manufacturing costs while maintaining high adaptability.

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

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 solution reduces the risk of print press downtime and inventory management limitations by allowing for rapid setup and reconfiguration of priming rollers for different print jobs, utilizing interchangeable sleeves that can be reused across multiple print tasks.

Implementation Method 1

The fluid supply system for positioning and securing the sleeves

Methodology Applied
Scientific EffectFluid pressure: Pressure Increase

Data Source

PatentUS12344493B2Primer apparatus
Publication Date: 2025.07.01 HEWLETT PACKARD DEVELOPMENT COMPANY LP
  • US12344493B2 patent drawing
  • US12344493B2 patent drawing
  • US12344493B2 patent drawing

AI summary

A primer roller may include a cylinder having an outer support surface. The outer support surface support surface may have a length in an axial direction and a fixed outer diameter extending along the length. The roller may further comprise, at least at least one elastically deformable annular sleeve having an axial length less than the axial length of the support surface of the cylinder an external diameter greater than the outer diameter of the support surface of the cylinder, and an internal diameter which provides a friction fit on the support surface of the cylinder. The outer surface of the support roller comprises a plurality of fluid outlets. The outlets are distributed about the support surface. Fluid expelled from the fluid outlets enables the sleeve to be slidably positioned relative to the support surface. A priming apparatus and a print press are also disclosed.