Description
Reviews
| Brand | - |
| Category | Stationery, Educational Electronics & Office Supplies / Technical Pens |
| Origin | - |
| Brand | Mitsubishi Uni |
| Ink Type | Waterproof Pigment Ink |
| Tip Material | Stainless Steel |
| Available Colors | Black, Brown, Gray, Blue |
| Line Widths | 0.03mm to 1.0mm |
| Key Feature | Anti-clog Cap Design |
| Fade Resistance | High (Archival Quality) |
| Ideal For | Manga, Technical Drawing, Journaling |
| Body Design | Ergonomic Hexagonal Barrel |
| Origin | Made in Japan |
Anonymous
Mar 31, 2026
Rating: 5/5
Archival quality ink
As an architect, I need lines that won't fade over time. These pens deliver crisp, dark lines that are completely lightfast. The gray option is also excellent for shading technical drawings.
Anonymous
Mar 31, 2026
Rating: 5/5
Smooth writing experience
I use these for bullet journaling and the writing experience is so smooth. The ink dries quickly, so there is no smudging even when I am left-handed. The blue color is a lovely deep shade.
Anonymous
Mar 18, 2026
Rating: 5/5
Best Technical Pens on the Market
I have tried many brands, but Mitsubishi Uni is superior. The anti-clog cap actually works; I left one uncapped for a few minutes by accident, and it still wrote perfectly immediately after capping.
Anonymous
Mar 12, 2026
Rating: 4/5
Reliable workhorse
Very reliable pens for daily sketching. The only reason I didn't give 5 stars is that the finest tips can be delicate if you press too hard, but that is expected with such fine nibs.
Anonymous
Mar 06, 2026
Rating: 4/5
Great precision, slightly pricey
The line consistency is amazing, especially the 0.05mm tip which is great for fine details. They are a bit more expensive than other brands, but the durability and fade resistance make them worth the investment.
Anonymous
Mar 04, 2026
Rating: 5/5
Perfect for Manga Inking
These pens are absolutely fantastic for comic work. The ink flows smoothly without skipping, and the waterproof quality means I can watercolor over my lines without any bleeding. Highly recommended for artists.
Q: Can these pens be refilled?
A: No, the Mitsubishi Uni Color Technical Pens are disposable and not designed to be refilled. Once the ink is depleted, the entire pen should be recycled according to local regulations.
Q: Is the 0.03mm tip durable enough for daily use?
A: While the 0.03mm tip is made of durable stainless steel, it is extremely fine. We recommend using a light hand and avoiding excessive pressure to maintain the tip's integrity for long-term daily use.
Q: Are these pens safe to use on watercolor paper?
A: Yes, these pens are specifically designed with waterproof pigment ink, making them ideal for use on watercolor paper. You can paint over the lines once the ink is dry without worrying about smudging or bleeding.
Q: What is the difference between the black and the brown ink versions?
A: The primary difference is the color pigment. Both offer the same waterproof, fade-resistant, and anti-clog properties. The brown ink provides a warmer, sepia-toned line often preferred for vintage-style sketches or specific manga effects.
Q: How do I prevent the tip from getting clogged?
A: The Uni Color Technical Pen features an advanced anti-clog cap design. Simply ensure you snap the cap on tightly immediately after use. If the pen is not used for a long period, store it horizontally.
Cold Brew Yogurt Fermentation Equipment - Manual Old-Style Yogurt Processing and Filling Line
$113,050.00
Electric Spray Painting Pen Set for Babies and Toddlers, Non-Toxic Washable Watercolor Markers, Drawing Tool Kit Toy
$49.50
![[Buy 2 Get 10% Off] Painted Double-Layer Wool Felt Mat for Calligraphy and Painting](https://www.gosteppe.com/cache/small/product/270133/legacy-main-a12ad5b62abb27a9a45afaf4.png)
[Buy 2 Get 10% Off] Painted Double-Layer Wool Felt Mat for Calligraphy and Painting
$7.48
Compact Home Range Hood, Portable USB Desktop Smoke Extractor for Living Room Hot Pot and BBQ Odor Removal
$41.00
Office and Home Computer Cable Management Sleeve - Desktop Data Cord Organizer and PC Wire Collector
$6.50
Linear Bearing
$75.47
Thickened Aluminum Alloy Stainless Steel Floor Wire Raceway - Surface-Mounted Cable Cover Protector, Anti-Crush, Self-Adhesive Invisible Design
$2.13
Kids Foam Stamp Brushes - Mushroom-Tipped Painting Set for Kindergarten Art and Graffiti Projects
$2.38
Heisidike HZL-32 Portable Stone Removal Hook for Car Tire Tread Cleaning
$9.28
Bixilage Cheese Processing Equipment – Curd Fermentation Machine for Stretchy Hand-Pulled Cheese Production Line
$67,900.00
Essential Oil Soap Stamping Machine DIY Stamp Maker Semi-Auto Pneumatic Stampler Small Handmade Soap Equipment
$2,173.00
Inverted Barrel Water Stand - Simple U-Shaped Thickened Holder for Purified Water Buckets with Dispenser Outlet
$21.00
Qingling Pickup 2.8T Diesel Isuzu 4JB1-T1 Engine Turbocharger Pump Assembly
$1,502.00
Juli JL-499 Heat Resistant up to 150°C Instant Adhesive High Performance Low Whitening Transparent High-Temperature Fast-Drying Glue
$90.30
Stainless Steel Buffet Warmer with Hydraulic Lift - Commercial Electric Heating Chafing Dish
$882.00
Zhaobei New Felt Calligraphy Mat Anti-Pilling Painting Felt Chinese Painting Cloth Brush Character Calligraphy Felt Pad
$29.70
Fruit Picking Bucket with Shoulder Strap, Manual Fertilizer Spreader, Durable Rubber Harvest Container for Seeds and Chemicals
$26.57
Baohong Artist Grade Watercolor Pad - 100% Cotton Pulp, 300gsm, Glued on Four Sides, Available in 16K, 8K, 4K with Cold Press or Hot Press Texture
$42.00
Commercial Brush Peeling Machine for Sweet Potatoes, Ginger, Taro, Mustard Greens, and Kohlrabi
$15.90
No-Drill Invisible Cable Organizer – Self-Adhesive Wire Fixer, Data Cable Clip, and Net Cable Management Solution
$6.90
Large Stone Landscape Sculptures, Engraved Pebble Gate Stones, Cornerstones, Roadside Markers, Village Signs, and Lawn Memorial Stones
$838.05
Kitchen Sink Organizer Rack, Dish Drying Rack, Multi-Function Countertop Storage Shelf for Washing and Placing Bowls
$55.70
New Hanging Kitchen Sink Strainer Basket, Multi-Function Colander for Washing Vegetables and Filtering Leftovers
$7.74
Sting Bite Relief Pen Electric Bug Bite Relief for Indoor
$60.14
Thickened 160g Gouache Paper 8K/4K for Beginners and Art Exam Students - Professional Art Painting Paper for Watercolor, Gouache, and Acrylic Creation and Practice
$5.78
Pad Printing Ink Cup Sealing Ring Rubber Gasket Elastic Rubber Ink Cartridge O-Ring Silicone Ink Leak-Proof Eco-Friendly Ink Cup Seal
$9.70
Stainless Steel Walnut Kernel Peeling Machine - Pecan Physical Peeling Equipment, DDA Washing Unit, Nut Kernel Peeler
$36,315.00
Daxiang Machinery Top-Flow Pillow Packaging Machine for Vegetables, Bread, Mooncakes, Cakes, Food, and Fruit Sealing
$35,475.00
50 Pcs Market Commodity Price Tag ers Advertising Tags Paper
$45.37
Fountain in the Rain by Kaoru Sudo, Mr. Chui Saxophone, Three-Piece Precise Transcription Service
$37.00
![[Customizable] Blank DIY Bookmarks - Thickened Hard Cardstock in Multiple Sizes with Tassels for Kindergarten and Elementary Art, Calligraphy, and Reading Gifts](https://www.gosteppe.com/cache/medium/product/386159/legacy-main-05a2e5e73e5ac60017fbef5e.webp)
