SEMCO International

Physical Integrity vs. Digital Reproduction

Printing Can Be Copied. Physical Engraving Adds Another Layer.

Standard ink printing and high-resolution digital scanning operate entirely on the surface plane. SEMCO's stylus engraving forms a deep physical indentation within compatible media, providing an unforgeable tactile and optical characteristic that flat reproduction cannot capture.

Stage 01PHYSICALLY ENGRAVED

Original Document

Contains micro-mechanical stylus engravings penetrating the substrate matrix.

Watermark Intact & Verifiable

Stage 02DIGITAL SCANNING

SURFACE-ONLY IMAGE CAPTURE

Photocopy or Scan

Scanners register 2D surface reflections but cannot capture internal mechanical depth.

Depth Data Omitted

Stage 03FLAT REPRODUCTION

Reproduction

Flat printout lacks the physical groove depth and light-transmission characteristics.

Physical Watermark Lost

Physical Operating Principles

A Security Feature Engraved into the Media

The SEMCO system executes a stylus-based raster engraving process, altering the physical density and surface profile of specialized media to create an internal, tamper-evident security watermark.

DIAGRAM: 3-AXIS MECHANISM PRINCIPLEPHYSICAL STYLUS SYSTEM

DIAGRAM: ENGRAVING HEAD & MEDIA FEEDPRECISION STYLUS

1. Stylus Penetration

A diamond or carbide stylus oscillates at high frequency (1.6 KHz), exerting microscopic vertical impact upon the target substrate without ripping the surrounding fibers.

2. Depth & Tone Variation

By modulating penetration depth across 256 discrete levels, photographic grayscale portraits and complex security emblems are translated directly into physical topography.

3. Substrate Embedding

The watermark becomes an inseparable structural element of the document, protected beneath surface resin layers and immune to chemical solvent washing.

NOTE ON SCHEMATICS:Technical mechanism illustrations shown above represent the foundational Japanese 3-axis stylus patent drawings (EIE Series).

Optical Transmission Characteristics

Negative in One View. Positive Through Light.

The appearance of the engraved watermark depends on the media and viewing conditions. In the demonstrated example, transmitted light reveals a positive image from the negative watermark.

Positive Watermark Revealed Under Transmitted Light

Positive View (Through Light)

Negative View (Surface Angle)

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← Drag slider or tap controls to test light transmissionMACRO SPECIMEN ANALYSIS

Inspection Methodology

When illuminated from the front at normal angles, the diamond stylus impressions appear as an indented, negative tonality across the substrate.

Holding the document up to natural or back-projection light causes the varying substrate thicknesses to transmit differential luminous flux—rendering a photorealistic positive portrait immediately obvious to immigration or border authorities.

NO BATTERIES • NO MICROCHIP REQUIRED FOR LEVEL 1 VISUAL INSPECTION

Forensic Difference

See the Physical Difference

The security feature is intended to be visually inspected under suitable lighting, and a scan or photocopy completely fails to reproduce the same physical engraving.

Original Document

Watermark Verified

Authentic specimen showing real physical engraving directly in the paper matrix. Watermark reacts dynamically when tilted or held against transmitted light.

Reproduction

Watermark Lost

Photocopied or scanned replica. Because standard copiers cannot transfer depth into the paper fibers, the internal watermark is entirely missing.

Substrate Science

Engineered Media for Physical Engraving

Ordinary paper tears under high-frequency vertical stylus vibration, while standard monolithic PVC cards can fracture. SEMCO utilizes specialized engineered media designed to absorb mechanical engraving without structural failure.

Document SubstrateEIE-777 SPECIFIED

Special Synthetic Resin Paper (SSRP)

A polyester-film-based, specially coated, colour-laser-printable, non-tear media specifically designed for engraving and digital or offset printing.

NON-TEARPolyester film core

WATER RESISTANT100% moisture immune

THERMAL STABILITYResists heat lamination

DOUBLE-SIDEDDual-face print adhesion

COMPATIBLE THICKNESS: 0.1 mm to 1.0 mm (Passports & Certificates)

Card SubstrateMULTI-LAYER RESIN

Engraving Card Structure

Engineered with distinct stratified layers allowing the mechanical stylus to alter the upper layers without cracking or piercing through the underlying clear base core.

Layer 1: Protective Clear OverlayProtects underlying data against mechanical abrasions

Layer 2: Specialized Engraving CoreReceives stylus displacement creating tactile watermark

Layer 3: Stabilizing High-Impact BasePET/PVC composite providing rigidity and ISO 7810 flatness

STANDARD CARD FORMAT: 85.6 × 54.0 mm, t = 0.76 mm (CR-80)

Client-Supplied Document Specimens

Document Applications

Archival reference examples illustrating physical engraving implementations across official governmental, academic, and administrative document formats using authentic client-provided specimens.

ICAO 9303 CompliantARCHIVAL SPECIMEN 01

Passport Booklet Engraving Attachment & Positioning Specimen

Precision vacuum clamping system designed for multi-page travel booklets, applying micro-engraved portraits and serial watermarks.

Physical Card Specimens

Identity & Card Applications

Every card application specimen below demonstrates authentic physical engraving rather than an embossed or raised effect, with unique source photographs of client-provided identity cards and vehicle registration certificates.

SPECIMEN 01Scheme Card Sample

National Identity Credential

Physical identity card format featuring tactile surface verification, uncopyable portrait engraving, and multi-tone security print.