Uni-Ball Signo Gel Impact Rollerball Pen - UN00055-ASb
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The Uni-Ball Signo Gel Impact is an excellent choice for writers, artists, and professionals who prioritize a bold, expressive writing experience on important documents. Featuring a 1.0mm tip and archival-quality pigment ink, it offers unparalleled smoothness and permanence, though users who prefer extra-fine lines may find the 0.6mm output too heavy for cramped notebooks.
All features
| Model Part Number | UN00055-ASb |
|---|---|
| Brand | Uni-Ball |
Extended Product Information
FAQs
Is the ink waterproof?
Yes, the Uni Super Ink is pigment-based, making it both water-resistant and fade-resistant once dry.
Does this pen bleed through paper?
Due to the broad 1.0mm tip and high ink flow, it may bleed on very thin or low-quality paper. It performs best on standard notebook or bond paper.
Is the pen refillable?
The Signo Gel Impact is designed as a disposable unit; it does not support standard ink refills.
Can I use this for legal documents?
Yes, because the ink is tamper-proof and archival, it is highly suitable for signing important documents and checks.
How long does the ink usually last?
Longevity depends on individual writing pressure and frequency of use, but the ink window allows you to monitor levels so you aren't caught off guard.
Is the grip comfortable for left-handed writers?
Many left-handed users appreciate the smooth ink flow, though they should be mindful of the ink drying time to avoid smearing.
Troubleshooting
Pen is skipping or writing inconsistently
The ball tip may have picked up paper fibers or residue. Gently wipe the tip with a clean, soft cloth or scribble on a scrap piece of paper to clear the flow.
Ink looks faint after periods of disuse
Store the pen with the tip facing downward for a few minutes to allow gravity to pull the gel ink toward the writing point.
Cap becomes loose
Inspect the inner cap mechanism for debris or dried ink buildup and clean with a dry cotton swab.
Pros and Cons
Pros
- Exceptionally smooth ink flow
- Archival and tamper-proof pigment ink
- Comfortable rubberized grip for extended use
- Visible ink supply window
- Consistent, bold line quality
Cons
- Broad 0.6mm line may feather on cheap paper
- Ink takes slightly longer to dry than standard ballpoints
- Not ideal for writing in very small spaces or dense grid journals
Setup, Compatibility & Care
This pen requires no complex setup; simply remove the protective tip seal upon first use. To ensure the longevity of the pen, always store it with the cap securely snapped on when not in use to prevent the gel ink from drying out. If you carry the pen in a pocket or bag, ensure the cap is fully engaged to avoid accidental leakage. The pen is designed for standard writing surfaces; avoid writing on oily or glossy surfaces where the gel ink may struggle to adhere. Should the pen be dropped, check the tip alignment before use, as the precision 1.0mm rollerball mechanism is sensitive to impact.