Digital Printing Device for Decorative Paper Rolls

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Solution Overview

Problem

Existing methods for printing paper from rolls with decorative images are inefficient for small quantities due to high costs and complexity in converting printing devices for different designs, as they require multiple expensive printing cylinders and are not adaptable for varied decorative images.

Innovation Solution

Implementing a digital printing process using a digital printing device that allows for quick and cost-effective printing of various decorative images on paper sections, enabling different designs on each piece without needing to change the printing device, and accommodating variations in image dimensions, arrangement, and color design.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If rotary printing with printing cylinders is used, then large quantities of printing paper with specific decor can be printed efficiently, but the device complexity and cost increase significantly when different decors are required

Engineering Contradiction:

Improveprinting efficiency for large quantitiesVSAvoidnumber of printing cylinders required

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent applies a single printing cylinder that can print multiple different decorative images by using a digital printing system with programmable control. This universal printing device replaces the need for multiple specialized printing cylinders, allowing the same physical device to perform different printing functions by loading different digital decor files, thereby reducing device complexity while maintaining productivity for large quantities

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent implements a dynamic printing system where the decorative images on the printing cylinder can be changed digitally without physical conversion. The printing cylinder surface can be dynamically reconfigured through digital control systems, allowing rapid switching between different decor patterns without mechanical intervention or device conversion, thus maintaining both high productivity and flexibility

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If printing device conversion is performed for different decors, then diverse decorative images can be printed, but production time and costs increase

Engineering Contradiction:

Improveability to print different decorative imagesVSAvoidconversion time between different decors

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent replaces the mechanical system of physically converting printing cylinders with a digital printing system. Instead of mechanically changing cylinders or surfaces, the system uses digital files to define decorative images, which are then applied through digital printing technology. This substitution eliminates the time-consuming mechanical conversion process while maintaining full adaptability to print any decorative image by simply loading a different digital file

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent prepares multiple decorative images in digital form in advance, stored in a digital repository. When a different decor is needed, the pre-prepared digital file is simply called up and printed, eliminating the need for on-the-fly conversion or preparation. This preliminary digital preparation enables instant switching between decors without production downtime

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If multiple printing cylinders with different decorations are maintained, then various decors can be printed, but the cost increases significantly

Engineering Contradiction:

Improvevariety of decorative images availableVSAvoidnumber of printing cylinders required

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent uses digital copies of decorative images stored as data files instead of physical printing cylinders. Each decorative image exists as a digital replica that can be instantly reproduced on the printing surface without requiring a physical cylinder for each design. This copying approach reduces the quantity of physical printing cylinders from many to just one or a few, while maintaining unlimited variety through digital file storage

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The patent implements a universal printing cylinder that can serve multiple functions by printing different decorative images through digital control. This single multi-functional device replaces the need for maintaining multiple specialized cylinders, reducing the quantity of printing equipment required while preserving the ability to print any decor type by loading appropriate digital files

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP2727740B2Method for manufacturing flat building materials and printing paper having a decorative print.

Publication Date: 2018.08.08 HULSTA WERKE HULS GMBH & CO KG

Figure 1~2

AI summary

Method for printing printed paper (2) from a roll (1) comprises printing the paper using a digital printing unit so that the paper section (3, 4, 5) has a further decorative image than the image of the previous paper section (3, 4, 5). An independent claim is also included for a printed paper roll. Preferred Features: The decorative image has a number of different image sections (a-e, f-j, k-o) within the image. The images can be varied within a decoration.