Kokuyo Letter Size KB Paper 5 Ream (2500 Sheets) - Smooth, Fountain

In this review the Kokuyo Letter Size KB Paper is presented as a practical choice for people who print daily, keep journals, or write letters by hand. The single biggest reason to buy is its combination of a smooth, fountain pen friendly surface and neutral pH, acid-free composition that preserves pages over time. The pack includes five reams for 2,500 sheets, so it suits high-volume use while delivering a natural off-white look and minimal bleed-through for both ink pens and printer toner.

Key Features

• Large pack size: Five reams supply 2,500 sheets, making it economical for offices, classrooms, or heavy personal use.
• Fountain pen compatibility: The paper performs well with fountain pens and varied nibs, showing little feathering and clear ink lines.
• Double-sided use: At 64 gsm with a smooth surface, it minimizes bleed-through so documents can be printed or written on both sides.
• Long-term preservation: Acid-free, neutral pH composition helps prevent yellowing and keeps letters and journals lasting longer.
• Environmentally responsible: Made with FSC certified pulp and responsibly sourced fibers for users who prefer sustainable paper options.
• Versatile color and finish: The off-white 80 brightness provides a soft, natural tone that works well for correspondence and creative projects.

Who It's For

Writers, fountain pen enthusiasts, and small offices that need a reliable, multi-purpose letter size paper will appreciate this Kokuyo pack for its smooth feel and low bleed-through. Its neutral pH and FSC content make it a good pick for anyone storing documents or creating keepsakes, such as international pen pals or planners.

Those who require very heavy, cardstock-like sheets or ultra-high whiteness for photo-quality prints should look elsewhere, since this paper is lightweight at 64 gsm and designed for everyday printing, writing, and journaling rather than heavy-duty or photographic work.

Pros & Cons

Pros

• Consistent smooth surface that is friendly to fountain pens and most inks.
• Large 5-ream quantity provides good value for frequent users.
• Acid-free and neutral pH supports long-term document preservation.
• FSC certified pulp offers a more sustainable paper option.

Cons

• At 64 gsm some users may find the sheets feel thin and slightly see-through for heavier ink swatches.

Specifications

Size	Letter 8.27 in x 11.69 in (US letter)
Sheets	2,500 sheets (5 reams of 500)
Weight	64 gsm (2.4 oz per m2), approx 0.09 mm
Brightness	80% whiteness (ISO), off-white
Composition	FSC certified pulp (over 30%), acid-free, neutral pH
Use cases	Printing, writing, journaling, double-sided documents

Our Verdict

The Kokuyo KB Letter Size paper is a solid, value-oriented choice for everyday printing and handwriting, especially for fountain pen users who want minimal feathering and bleed-through. With five reams and acid-free, FSC certified pulp, it balances cost, sustainability, and longevity, making it a smart buy for offices, students, and writers who need a reliable, versatile paper without paying for heavy or photographic stock.

Frequently Asked Questions

Is this paper suitable for double-sided printing?
Yes. At 64 gsm the sheet minimizes bleed-through and is suitable for double-sided printing in typical office and home printers.

Will fountain pen ink feather or bleed on this paper?
No. The smooth surface is reported to handle fountain pens well with minimal feathering and good line clarity.

Is the paper environmentally certified?
Yes. The paper is made with FSC certified pulp and is designed to be sourced from responsibly managed forests.