Backside Gloss Mirror Rendering for Anti-Counterfeiting

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Solution Overview

Problem

Conventional security printing techniques using specialty imaging methods like MicroGloss and MacroGloss face challenges in maintaining aesthetics while providing effective anti-counterfeiting measures, particularly due to issues with toner height and visibility under different lighting conditions.

Innovation Solution

The method involves creating a mirror of the gloss effect image on the back side of a recording medium directly opposite the gloss mark on the front side, using a digital front-end processor and color printer, to enhance the hiding capability of security features, especially under backlit conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If specialty imaging techniques like MicroGloss and MacroGloss are used for security printing, then anti-counterfeiting capability is improved, but aesthetic appearance deteriorates due to visible gloss effects and toner height issues

Engineering Contradiction:

Improveanti-counterfeiting capabilityVSAvoidaesthetic appearance

Core Design Contradiction:

ReliabilityVSShape

Solution Approach 1:

The patent applies inversion by placing the mirror image of the gloss effect pattern on the backside of the document rather than on the frontside. This reverses the conventional approach where security features are visible on the front, thereby hiding the gloss effect from frontside viewers while maintaining security functionality when the document is tilted or viewed from the back.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent moves the security feature from a two-dimensional frontside placement to a three-dimensional configuration by utilizing the backside of the document. This dimensional change allows the gloss effect to be hidden in the conventional viewing dimension (frontside) while remaining accessible in an alternative dimension (backside when tilted).

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Reliability

If gloss effect images are rendered on the front side of a document, then security features become visible, but they become too obvious and easy to replicate under backlit conditions

Engineering Contradiction:

Improvesecurity feature visibilityVSAvoidease of replication

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent inverts the placement strategy by positioning the mirror image on the backside of the document. This causes the security feature to be invisible under normal frontside viewing and backlighting conditions, yet becomes visible when the document is tilted, creating an effective anti-counterfeiting measure that is difficult to replicate.

Inventive Principle:

Principle #13The other way round (Inversion)

3Reliability

If toner height is increased to enhance gloss effect visibility, then anti-counterfeiting effectiveness is improved, but document aesthetics and readability deteriorate

Engineering Contradiction:

Improveanti-counterfeiting effectivenessVSAvoiddocument aesthetics

Core Design Contradiction:

ReliabilityVSShape

Solution Approach 1:

The patent applies inversion by placing the high-toner-height gloss effect on the backside of the document. This ensures that the aesthetic document frontside remains clean and readable, while the enhanced gloss effect with high toner height provides strong anti-counterfeiting protection when viewed from the backside or when the document is tilted.

Inventive Principle:

Principle #13The other way round (Inversion)

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 improves the obfuscation of security features, making them more difficult to replicate, thereby enhancing the anti-counterfeiting capabilities without compromising the document's appearance.

Implementation Method 1

creating with a processor, a mirror of a gloss effect image of a gloss mark located on a front side of a recording medium; and rendering with a color printer having marking materials, the mirror of the gloss effect image on a back side of the recording medium directly opposite the gloss mark

Methodology Applied

Scientific EffectOptical reflection: Reflection

Data Source

PatentUS10805494B1Mirror of gloss effect image of gloss mark rendered on backside of medium

Publication Date: 2020.10.13 XEROX CORP

AI summary

A method and system for rendering a gloss effect image on a recording medium, can involve creating with a processor, a mirror of a gloss effect image of a gloss mark located on a front side of a recording medium, and rendering with a color printer having marking materials, the mirror of the gloss effect image on a back side of the recording medium directly opposite the gloss mark located on the front side of the recording medium. The processor can include a digital front processor that communicates with the color printer. The gloss effect image of the gloss mark can be, for example, a micro gloss feature or a macro gloss feature.