Project grades
52 gsm / 68 gsm
Exact grade and availability are confirmed per inquiry.
TOMOE RIVER S / B2B SOURCING
FUKUSEI accepts overseas B2B inquiries for Tomoe River S paper from Japan. We can review 52 gsm and 68 gsm requirements, arrange samples when available, confirm specifications and coordinate export conditions for commercial projects.

Specification
Buyers often use “Tomoe River,” “Tomoe River S,” “Sanzen Tomoe River” and a grammage such as 52 gsm or 68 gsm interchangeably. For a commercial order, those details should be separated. FUKUSEI confirms the requested grade, basis weight, colour, size, quantity, destination and current supply conditions before quotation.
Project grades
Exact grade and availability are confirmed per inquiry.
Typical uses
Also discussed for fountain-pen-focused writing products.
Supply model
Samples, specifications, packing and export terms are coordinated project by project.
Commercial terms
MOQ, price, lead time and available size are not treated as fixed website terms.
52 gsm vs 68 gsm
Both can be relevant to premium writing products. The better choice depends on the finished book, page count, desired hand feel and the actual writing and production test.
| Factor | 52 gsm | 68 gsm |
|---|---|---|
| High page count | Useful starting point when reducing page-block thickness and finished weight is important. | Creates a more substantial page block and increases finished-book weight. |
| Page feel | Very light and thin page feel. | More substantial feel while remaining lighter than many standard writing papers. |
| Show-through / opacity | Must be checked with the actual paper, print and ink. | May feel more opaque, but performance still depends on the exact grade and use. |
| Fountain-pen use | Test feathering, bleed-through, drying time and ink appearance with the intended nibs and inks. | Use the same practical test; gsm alone does not guarantee better fountain-pen performance. |
| Binding & shipping | Can support thinner, lighter high-page-count books. | Adds bulk and weight, which should be checked in a finished dummy and freight plan. |
Buyer information
Supply & export
Tomoe River S supply conditions can change by basis weight, colour, production lot, sheet size and timing. FUKUSEI therefore confirms the current Japanese supply source before quoting. For suitable projects we can coordinate samples, export pallets, documentation and overseas delivery. If downstream cutting, printing or binding is required, independent long-term partner factories can be introduced and coordinated separately.
FAQ
FUKUSEI accepts B2B inquiries for Tomoe River S and confirms the exact requested grade, basis weight, colour, size, quantity and current supply conditions with the Japanese source before quotation.
Yes. We can review both 52 gsm and 68 gsm project requirements. Availability, colour, size, MOQ and lead time must be confirmed for the specific inquiry.
It is widely selected for writing products, but a commercial buyer should still test the actual paper with the intended nibs and inks. Check feathering, bleed-through, show-through, drying time, ink appearance and binding conditions before final approval.
Do not assume that every product described as “Tomoe River” is the same specification. For procurement, identify the exact product name, manufacturer or source reference, basis weight, colour and sample so the requested grade can be confirmed correctly.
For suitable B2B projects, FUKUSEI can coordinate Japan-side supply, export packing, documentation and international delivery conditions. Final feasibility depends on the requested specification, quantity and destination.
FUKUSEI primarily handles commercial B2B paper projects rather than consumer retail. Brands, printers, publishers, converters and distributors can contact us with their expected quantity and use.
Related guides
If the exact specification is not fixed, send the intended product, target gsm, quantity, destination and reference paper. We can start by confirming what needs to be verified.