Description

The Genuine HP 728B 130ml Matte Black DesignJet Ink Cartridge [3WX26A] is an Original HP ink cartridge designed for compatible HP DesignJet T730 and T830 series large-format printers and multifunction devices. Containing 130ml of genuine HP pigment-based Matte Black ink, it is engineered to produce crisp technical lines, strong black density and clear professional output for CAD drawings, architectural plans, maps, diagrams and other large-format documents.
Developed together with the HP DesignJet printing system, Original HP 728B ink helps support reliable printer operation and consistent professional output. The 3WX26A 130ml Matte Black works alongside HP 728 Cyan, Magenta and Yellow inks in compatible T730 and T830 printers.
- ✔ Genuine HP Original DesignJet Ink Cartridge
- ✔ HP Cartridge Series: 728B
- ✔ Manufacturer Part Number: 3WX26A
- ✔ Colour: Matte Black
- ✔ Ink Capacity: 130ml
- ✔ Pigment-Based Matte Black Ink
- ✔ HP Thermal Inkjet Technology
- ✔ Designed for HP DesignJet T730 Series
- ✔ Designed for HP DesignJet T830 Series
- ✔ Ideal for CAD, Plans & Technical Drawings
- ✔ Crisp Lines & Strong Black Density
- ✔ Genuine HP Fit, Recognition & Reliability
Genuine HP 728B 130ml Matte Black Ink
The HP 728B 3WX26A contains 130ml of Genuine HP Matte Black ink for supported HP DesignJet T730 and T830 printers. Unlike the Cyan, Magenta and Yellow inks in this printing system, which are dye-based, the Matte Black ink is pigment-based.
This pigment-based formulation is particularly well suited to technical printing where sharp black lines, text clarity and strong contrast are important.
Key Features
- ✔ Genuine HP Original Ink Cartridge
- ✔ HP 728B DesignJet Ink Series
- ✔ Part Number: 3WX26A
- ✔ Colour: Matte Black
- ✔ 130ml Ink Capacity
- ✔ Pigment-Based Matte Black Ink
- ✔ HP Thermal Inkjet Technology
- ✔ Designed for HP DesignJet T730
- ✔ Designed for HP DesignJet T830 Multifunction Printers
- ✔ Sharp Black Lines & Fine Detail
- ✔ Excellent for Technical Drawings & Plans
- ✔ Professional Large-Format Printing
- ✔ Reliable OEM Cartridge Recognition
Designed for HP DesignJet T730 & T830
The HP 728B ink system is designed for compatible HP DesignJet large-format printers and multifunction devices. The 3WX26A 130ml Matte Black cartridge is supported by the HP DesignJet T730 and T830 printer families.
These DesignJet models are widely used by architects, engineers, construction professionals, surveyors and other technical users who require accurate large-format plans, drawings, maps and diagrams.
Compatible HP DesignJet Printers
The Genuine HP 728B 3WX26A Matte Black Ink Cartridge is designed for supported models including:
- ✔ HP DesignJet T730 36-inch Printer
- ✔ HP DesignJet T730 Series
- ✔ HP DesignJet T830 24-inch Multifunction Printer
- ✔ HP DesignJet T830 36-inch Multifunction Printer
- ✔ HP DesignJet T830 Series
Important: Please confirm that your exact DesignJet printer supports HP 728B / 3WX26A before ordering. Older printers may require a current firmware version to recognise later 728B cartridges.
Pigment-Based Matte Black Ink
The 3WX26A uses pigment-based Matte Black ink. HP specifies the T730/T830 ink system as dye-based for Cyan, Magenta and Yellow, with pigment-based ink used for Matte Black.
Pigment-based Matte Black is particularly useful for technical applications because it helps produce strong black density, crisp lines and easily readable detail in CAD drawings, plans and other professional documents.
Professional CAD & Technical Printing
The HP DesignJet T730 and T830 are designed for technical large-format applications, and the Matte Black cartridge plays an important role in reproducing fine black lines, text, dimensions, annotations and other detailed elements.
This makes the 3WX26A particularly suitable for:
- Architectural Plans
- Engineering Drawings
- CAD Documents
- Construction Plans
- Maps & Diagrams
- Technical Schematics
- Presentations & Business Graphics
Genuine HP Quality & Reliability
Original HP inks are developed together with compatible HP DesignJet printers as an integrated printing system. The 3WX26A is designed to provide correct cartridge recognition, consistent ink delivery and dependable professional output.
For businesses relying on their DesignJet for important plans and technical documents, Genuine HP ink provides the OEM consumable designed specifically for the printer.
Product Specifications
| Brand | HP |
| Cartridge Series | HP 728B |
| Manufacturer Part Number | 3WX26A |
| Product Type | Genuine DesignJet Ink Cartridge |
| Manufacturer Type | Genuine / Original HP |
| Colour | Matte Black |
| Ink Capacity | 130ml |
| Ink Type | Pigment-Based |
| Print Technology | HP Thermal Inkjet |
| Pack Quantity | 1 Ink Cartridge |
| Compatible Printer Series | HP DesignJet T730 / T830 |
| Condition | New |
HP 728 / 728B 130ml Ink Set
The compatible 130ml ink configuration for the HP DesignJet T730 and T830 combines the HP 728B Matte Black cartridge with HP 728 Cyan, Magenta and Yellow cartridges.
| Part Number | Series | Colour | Capacity |
| 3WX26A | HP 728B | Matte Black | 130ml |
| F9J67A | HP 728 | Cyan | 130ml |
| F9J66A | HP 728 | Magenta | 130ml |
| F9J65A | HP 728 | Yellow | 130ml |
This listing is specifically for 1 × Genuine HP 728B 3WX26A 130ml Matte Black Ink Cartridge.
HP 728B Matte Black Capacity Options
HP provides the 728B Matte Black cartridge in different capacities for supported DesignJet printers:
| Part Number | Colour | Capacity |
| 3WX26A | Matte Black | 130ml |
| 3WX30A | Matte Black | 300ml |
The 3WX26A 130ml cartridge in this listing provides a practical capacity for regular professional DesignJet printing, while the larger 300ml 3WX30A option may be preferable for higher-volume environments.
Ideal For
- ✔ Architects & Architectural Practices
- ✔ Engineers & Engineering Offices
- ✔ Construction & Building Companies
- ✔ Surveyors & Planning Professionals
- ✔ CAD & Technical Drawing Users
- ✔ Government & Educational Organisations
- ✔ Maps, Plans & Diagrams
- ✔ Technical Line Drawings
- ✔ HP DesignJet T730 Users
- ✔ HP DesignJet T830 Users
- ✔ Customers Requiring Genuine HP DesignJet Ink
Why Choose the HP 728B 130ml Matte Black?
The HP 728B 3WX26A combines a useful 130ml capacity with pigment-based Matte Black ink designed for the technical printing requirements of compatible DesignJet T730 and T830 devices.
For users producing CAD drawings, architectural plans and other line-intensive documents, the Genuine HP Matte Black formulation is designed to provide the crisp lines, strong black density and reliable output expected from the DesignJet printing system.
What's Included?
- ✔ 1 × Genuine HP 728B 130ml Matte Black DesignJet Ink Cartridge [3WX26A]
Frequently Asked Questions (FAQ)
Is the HP 3WX26A a Genuine HP ink cartridge?
Yes. This listing is for a Genuine Original HP 728B DesignJet Ink Cartridge, not a compatible, generic or refilled cartridge.
Is 3WX26A HP 728 or HP 728B?
The 3WX26A is HP 728B. It is the 130ml Matte Black DesignJet ink cartridge.
What colour is HP 3WX26A?
The 3WX26A is Matte Black.
How much ink is in the HP 3WX26A?
The cartridge contains 130ml of Matte Black ink.
Is HP 728B Matte Black pigment or dye ink?
The Matte Black ink used in the compatible DesignJet T730/T830 printing system is pigment-based. Cyan, Magenta and Yellow are dye-based.
Does 3WX26A work with the HP DesignJet T730?
Yes. HP lists the 3WX26A HP 728B 130ml Matte Black cartridge for compatible DesignJet T730 printers.
Does 3WX26A work with the HP DesignJet T830?
Yes. The 3WX26A is designed for compatible HP DesignJet T830 multifunction printers, including supported 24-inch and 36-inch configurations.
Does a printer firmware update matter when using HP 728B?
It can. Because HP 728B is a later cartridge version, some older compatible T730/T830 printers may require updated printer firmware for correct cartridge recognition. Keeping the printer firmware current is recommended before installing a 728B cartridge.
What is the difference between 3WX26A and 3WX30A?
Both are HP 728B Matte Black DesignJet cartridges. The 3WX26A contains 130ml, while the 3WX30A contains 300ml.
Can I replace only the Matte Black cartridge?
Yes. The compatible HP DesignJet T730 and T830 printing system uses separate Matte Black, Cyan, Magenta and Yellow ink cartridges, so each colour can be replaced independently.
Which 130ml colour cartridges are used alongside 3WX26A?
The corresponding 130ml colour cartridges are F9J67A Cyan, F9J66A Magenta and F9J65A Yellow.
Does the 3WX26A have a page yield?
HP specifies this DesignJet consumable primarily by its 130ml ink capacity rather than a conventional office-printer page yield. Actual ink usage varies substantially according to drawing size, coverage, print mode and document type.

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The OZ Toner Return Policy applies to all purchases made on this website.
We recommend you read our Returns Policy carefully prior to placing an order and retain a copy of these terms and your order so you are familiar with our policy on refunds, returns and exchanges and your rights under the Australian Consumer Law.
We recommend you immediately examine goods delivered to you to ensure that there are no visible signs of damage or fault and that the goods received match the order you placed. Our exchange/return window is within 30 days of receiving your order. All incorrectly ordered or unwanted returns will incur a minimum 20% restocking fee.
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We provide refund or replacement on defective and damaged products.
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Buyers must contact manufacturer of the item for all the warranty service within the warranty period. We will provide contact details of the manufacturer to the buyer. We have no other responsibility (including DOA) for items covered with manufacturer warranty.
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Buyers must contact manufacturer of the item for all the on-site warranty service within the warranty period. We will provide contact details of the manufacturer to the buyer. We have no other responsibility (including DOA) for items covered with manufacturer warranty.
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Buyers are responsible to send back the faulty item to us. Items with valid warranty within the warranty period will be replaced with fully functional unit after checking. Please allow up to 2 weeks for replacement. We have no guarantee on product compatibility with buyers own equipment unless specified on the item listing.
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Refunds are only issued under certain circumstances, such as:
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DOA products where no exchange/replacement is possible
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Incorrect supply where the proper model cannot be provided
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Approved cases where neither replacement nor upsell option is available
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Refunds are made via the original payment method and typically processed within 7 business days after approval.
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Where you believe an item is faulty, you must contact manufacturer to for it to be assessed within a reasonable period of time, and you must request return authorization letter from the manufacturer if the item is confirmed faulty. If there is a major failure with the item, and you have forwarded the return authorization letter granted by manufacturer to us, you may choose a refund or exchange. If the failure is minor, manufacturer will honor the warranty and repair the item for you within a reasonable time.
Where an item is damaged through misuse or abnormal use, OZ Toner cannot provide a refund, exchange or repair, whether the fault is identified by OZ Toner, the manufacturer or their service agent.
OZ Toner will require satisfactory proof of purchase before providing a remedy under the Australian Consumer Law.
For further information about the Australian Consumer Law and Consumer Guarantees, visit www.consumerlaw.gov.au.

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