What is ColorLok®?

ColorLok Technology is the new standard for better print quality. Paper that’s qualified with the ColorLok logo is able to produce the best possible digital prints.

The ColorLok standard of performance is for plain-paper output with inkjet and laser printers, as well as common copy machines. As such, ColorLok papers will provide consistent and reliable printing regardless of which machine is used within an office environment.

ColorLok® Technology

The science behind ColorLok Technology results in more saturated colors, bolder blacks, and faster drying times.

During the paper-making process, a chemical additive is incorporated into the paper to “lock” pigments at the surface. Without this technology, paper acts more like a sponge, absorbing black and color pigments deep into the paper and away from the surface.

Watch: How ColorLok Technology works, John Stoffel, Head Chemist at HP

How Does it Work?

The ColorLok additive is incorporated into the paper during the paper-making process and produces a chemical interaction with the pigment in the ink. This helps to hold the colorant near the surface of the paper, while the water absorbs deep into the paper fibers. What results is a highly-absorptive and fast-drying product.

Pigment particles are the colorant used in many inkjet inks for home and office printers. Pigments are suspended in a colorless liquid, called the ink vehicle, which rapidly immobilizes pigments at the paper surface.

Ordinary paper reduces optical density

When ink touches the surface of ordinary paper, pigment particles are absorbed deep into the porous sheet, thereby reducing optical density.

ColorLok® Technology ink vehicle

With ColorLok Technology, the ink vehicle penetrates the surface of the paper without transporting the pigment particles into the paper.

Standard Paper - Text
Standard paper When ink touches the surface of ordinary paper it spreads along the paper fibers causing a ‘feathering’ effect.
Standard Paper - ColorLok paper
ColorLok paper Color appears richer, more saturated and vibrant because the ink particles separate from the vehicle, before they are absorbed into the paper.
Standard Paper - Flower
Standard paper Black text appears grey because much of the ink has saturated deep into the paper fiber, leaving less intensity on the surface.
Standard Paper - ColorLok paper
ColorLok paper Black pigments are removed from the ink vehicle and remain concentrated on the paper surface, resulting in denser blacks with sharper edges.

Featured Products

ColorLok® papers are available worldwide from a growing number of paper manufacturers and across major brands. Papers that meet the ColorLok quality standard have been rigorously tested in all types of office printing equipment. Look for papers with the ColorLok logo to ensure the highest performance in print quality. Over 4 billion reams of ColorLok paper sold.

Domtar EarthChoice® Office Paper Domtar EarthChoice® Office Paper
HP Multipurpose Ultra White HP Multipurpose Ultra White
Office Depot® Multipurpose Office Depot® Multipurpose
Staples® Multipurpose Staples® Multipurpose
Georgia-Pacific Image Plus Standard Multipurpose Georgia-Pacific Image Plus Standard Multipurpose
Boise Polaris Premium Multipurpose Boise Polaris Premium Multipurpose
W.B. Mason mycopy W.B. Mason mycopy
Copamex HI-TEC Copamex HI-TEC
Suzano Report Suzano Report
Sam's Club Member's Mark Sam's Club Member's Mark
Finch Premium Multipurpose Finch Premium Multipurpose
Xerox®  VitalityTM Multipurpose Printer Paper Xerox® Vitality™ Multipurpose Printer Paper
International Paper Hammermill® Fore MP International Paper Hammermill® Fore MP
HP Office HP Office
HP Laserjet HP Laserjet
Suzano Report Suzano Report
Suzano Eclipse Suzano Eclipse
Inapa Tecno Formula Inapa Tecno Formula
Stora Enso MultiCopy Original Stora Enso MultiCopy Original
Papyrus Plano Superior Papyrus Plano Superior
Antalis Image Impact Antalis Image Impact
Office Depot 100% Recycled Bright White Office Depot 100% Recycled Bright White
Clairefontaine Clairalfa Clairefontaine Clairalfa
Metsa Board Data Copy Metsa Board Data Copy
Suzano Report Premium Suzano Report Premium
Xerox Exclusive Xerox Exclusive
HP All-in-One Printing HP All-in-One Printing
Rey Office Document Rey Office Document
Mondi DNS® premium Mondi DNS® premium
JK Copier JK Copier
HP Everyday HP Everyday
HP Business Copy HP Business Copy
HP Office HP Office
HP Home & Office HP Home & Office
HP Office HP Office
HP Multipurpose HP Multipurpose
Ballet Universal Ballet Universal
Rey Superior Document Rey Superior Document
Ballet Classic Ballet Classic

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Our Brand

ColorLok® is a brand, a technology, a set of performance standards, and a licensing program.

Paper products that carry the ColorLok logo represent a standard for improved home and office printing for both inkjet and laser printers. When the ColorLok logo appears on paper packaging, it assures printer users that the printed output is of the highest quality.

As of March 2015, over 100 paper brands from worldwide sources—including paper mills, merchants, and products branded by office supply retailers—have passed the ColorLok performance specifications and display the ColorLok logo.

How ColorLok Technology works