# US 10,455,113 B1 · Document classification utilizing fluorescent or ultraviolet inking

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- Number: US 10,455,113 B1
- Document ID: US10455113B1
- Status: Granted
- Kind: B1
- Application number: 15/383,395
- Filed: 2016-12-19
- Granted: 2019-10-22
- Earliest claimed: 2015-12-19
- Assignees: Ripcord Inc.
- Applicants: Ripcord Inc.
- Inventors: Alex Fielding; Kevin C. Hall; Kirk H. Knight
- Web page: https://patentgrep.com/patent/US10455113B1

## CPC

- H04N 1/32352: {Controlling detectability or arrangements to facilitate detection or retrieval of the embedded information, e.g. using markers (for decoding, detection or retrieval operations H04N1/32149 and subgroups take precedence)}
- B41J 2/2107: {characterised by the ink properties (supplying ink in a solid state B41J2/17593)}
- B41J 2/2114: {Ejecting specialized liquids, e.g. transparent or processing liquids (B41J2/211 takes precedence)}
- G06K 15/102: {using ink jet print heads}
- H04N 1/00347: {with another still picture apparatus, e.g. hybrid still picture apparatus (circuits or arrangements for control or supervision between image input and image output device H04N1/32)}
- H04N 1/32149: {Methods relating to embedding, encoding, decoding, detection or retrieval operations}
- H04N 2201/0081: Image reader (H04N2201/0091 - H04N2201/0094 take precedence)
- H04N 2201/327: which are undetectable to the naked eye, e.g. embedded codes
- H04N 2201/3271: Printing or stamping
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS

## Abstract

Systems and methods are provided for document classification and digitization. One or more physical documents may have a classification code applied thereon. The classification code may be a unique identifier for the document and/or page of the document. The classification code may utilize ink outside the visible spectrum for the purpose of being machine readable. A digital version of the physical document may be created. The digital version may include a visible reproduction of the document without showing the classification code.

## Claims

### Claim 1

A method of document classification, said method comprising:
receiving, at a classification station, a physical document comprising one or more pages;
applying, at the classification station, a classification code to the physical document, wherein the classification code is formed using an ink that is (1) not visible to the unaided eye when viewed under natural light and (2) visible when illuminated by wavelengths outside the visible spectrum, wherein the classification code is applied to the physical document prior to scanning;
scanning, with aid of an image capture device, the physical document into one or more images of the one or more pages of the physical document in a digital format, wherein the classification code is not visible in the one or more images of the one or more pages of the physical document;
scanning the classification code under illumination of wavelengths outside the visible spectrum;
associating the classification code to the digital format of the physical document without having the classification code visible in the one or more images; and
storing both (i) the digital format of the physical document digitally associated with the classification code, wherein the classification code is not visible in the one or more images of the physical document, and (ii) the physical document physically associated with the classification code, wherein the classification code is not visible under natural light but capable of being identified under illumination of the wavelengths outside the visible spectrum for future processing of the physical document.

### Claim 2 (depends on 1)

The method of claim 1, wherein information from the classification code includes one or more of the following: a unique identifier for each of the one or more pages, timing at which the classification code is applied to the physical document, or timing at which the physical document is received at the classification station.

### Claim 3 (depends on 1)

The method of claim 1, wherein the physical document is formed of one or more members selected from the group consisting of: card stock, file folders, cardboard, acetate film, polyester film, synthetic paper, microfiche, tissue paper, X-ray film, blueprints, maps, cloth, and parchment.

### Claim 4 (depends on 1)

The method of claim 1, wherein the ink is an ultraviolet ink that is visible when viewed under ultraviolet light.

### Claim 5 (depends on 1)

The method of claim 1, wherein the classification code is applied with aid of an ink jet printer.

### Claim 6 (depends on 1)

The method of claim 1, wherein the classification code follows a Bates numbering system.

### Claim 7

An assembly for document digitization and classification, said assembly comprising:
a classification station configured to (1) receive a physical document comprising one or more pages, and (2) apply a classification code to the physical document, wherein the classification code is formed using an ink that is (i) not visible to the unaided eye when viewed under natural light and (ii) visible when illuminated by wavelengths outside the visible spectrum, wherein the classification code is applied to the physical document prior to scanning;
a scanning station comprising an image capture device configured to (1) scan the classification code under illumination of wavelengths outside the visible spectrum and (2) scan the physical document into one or more images of the one or more pages of the physical document in a digital format, wherein the classification code is not visible in the one or more images of the one or more pages of the physical document; and
a processor configured to associate the classification code to the digital format of the physical document without having the classification code visible in the one or more images, thereby storing both (i) the digital format of the physical document digitally associated with the classification code, wherein the classification code is not visible in the one or more images of the physical document, and (ii) the physical document physically associated with the classification code, wherein the classification code is not visible under natural light but capable of being identified under illumination of the wavelengths outside the visible spectrum for future processing of the physical document.

### Claim 8 (depends on 7)

The assembly of claim 7, further comprising a conveyance mechanism that permits the physical document to be conveyed from the classification station to the scanning station without human intervention.

### Claim 9 (depends on 8)

The assembly of claim 8, wherein the classification station, the scanning station, and the conveyance mechanism operate in concert without human intervention.

### Claim 10 (depends on 7)

The assembly of claim 7, wherein the classification station or the scanning station is configured to accommodate a plurality of types of physical documents without human intervention, wherein the plurality of types of physical documents include two or more members selected from the group consisting of: card stock, file folders, cardboard, acetate film, polyester film, synthetic paper, microfiche, tissue paper, X-ray film, blueprints, maps, cloth, and parchment.

### Claim 11 (depends on 7)

The assembly of claim 7, further comprising a clock, wherein information from the classification code comprises timing information provided by the clock.

### Claim 12 (depends on 7)

The assembly of claim 7, further comprising an illumination source that illuminates the physical document under light that includes wavelengths outside the visible spectrum, wherein the classification station applies the classification code to the physical document after the illumination source illuminates the physical document when illumination by the illumination source reveals that the physical document does not already have, applied thereon, a classification code formed of the ink that is not visible to the unaided eye.

### Claim 13

A method of document classification, said method comprising:
receiving, at a classification station, a physical document comprising one or more pages;
applying, at the classification station, a classification code to the physical document, wherein the classification code is formed using an ink that is (1) not visible to the unaided eye when viewed with natural light illumination and (2) visible when illuminated by wavelengths outside the visible spectrum, wherein the classification code is applied to the physical document prior to scanning, and wherein the classification code includes timing information relating to an event associated with the physical document;
scanning, with aid of an image capture device, the physical document into one or more images of the one or more pages of the physical document in a digital format;
scanning the classification code under illumination of wavelengths outside the visible spectrum;
associating the classification code to the digital format of the physical document; and
storing both (i) the digital format of the physical document digitally associated with the classification code, and (ii) the physical document physically associated with the classification code.

### Claim 14 (depends on 13)

The method of claim 13, wherein the event associated with the physical document is when the physical document is received at the classification station.

### Claim 15 (depends on 13)

The method of claim 13, wherein the event associated with the physical document is when the classification code is applied to the physical document.

### Claim 16 (depends on 13)

The method of claim 13, wherein the timing information has a degree of precision that is greater than or equal to a minute of precision.

### Claim 17 (depends on 13)

The method of claim 13, wherein the classification code follows a Bates numbering system.

### Claim 18 (depends on 13)

The method of claim 13, wherein the classification code is applied to each of the one or more pages of the physical document.