Open Printer is an open-source, repairable inkjet printer designed for makers, artists, and anyone tired of throwaway hardware. Built with standard mechanical components and modular parts, it’s easy to assemble, modify, and repair. You can print on standard sheets or paper rolls and choose between black or color cartridges, refillable at your convenience.

This project aims to reclaim our everyday tools. As such, it features no proprietary drivers, no cartridge DRM that locks you to a single vendor and is designed to never become obsolete. The Open Printer is built for longevity and customizability, ensuring that it remains fully under your control.

Take Back Your Printer

Thanks to its open-source, standard components, Open Printer can be assembled, customized, and repaired to extend its life. You can easily maintain it and refill cartridges with ink, and its flexible design can adapt to your workspace, working when installed on a wall or placed on a desktop.

Open Printer adapts to your needs, not the other way around. With Open Printer, you can choose between standard sheets or a paper roll, giving you an incredible degree of flexibility. Create not only standard documents, but also banners or strips. Unleash your creativity without constraints thanks to its ingenious integrated cutter:

Features & Specifications

Print Specs

• Black & White: 600 dpi
• Color: 1200 dpi
• Printhead compatibility: HP 63 (US), HP 302 (Europe)
• Ink cartridges: use only one (black or color) or both (black and color), refillable
• Speed: TBD

Supported paper formats

• North American letter, tabloid, and 11-inch wide paper roll
• European A4, A3, and 297 mm-wide paper roll

Processing

• Main board: Raspberry Pi Zero W
• Cartridge board: STM32 MCU

Interface

• Display: 1.47-inch, 172 x 320 TFT LCD
• Button: Jogger wheel

Connectivity

• USB Type-C (computer)
• USB Type-A (for USB mass storage device)
• Wi-Fi 802.11ac
• Bluetooth 4.1

Power: 24 V DC supply, 2.1 mm DC-in jack
Compatibility: Windows, macOS, Linux, Android, iPhone (uses the CUPS open-source print server)
Dimensions: 50 x 10 x 11 cm (19.7 x 3.9 x 4.3 in)

Open Source

Open Printer will use the Creative Commons BY-NC-SA 4.0 license for all of its files, including electronics and mechanical design files, firmware code, and the bill of materials. We hope that people will be able to repair, upgrade, and contribute improvements to their printers. Learn more at opentools.studio

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