SAKAE TP Tomoe River FP Hardcover Notebook A5 White 5 mm Grid 368 Pages

SAKAE TP Tomoe River FP Hardcover Notebook A5 5 mm Grid 368 Pages

The SAKAE TP Tomoe River FP Hardcover Notebook A5 5 mm Grid 368 Pages combines generous writing capacity with a precise, unobtrusive ruling. Its ultra-light Japanese paper, thread-sewn binding and practical square grid create a versatile surface for structured notes, fountain pen writing and long-term projects.

Ideal for students, journal writers, planners and anyone who needs a consistent guide for notes, tables, diagrams, charts or technical sketches.

A 5 mm grid for structured writing

With 368 pages, this notebook provides ample room for study notes, a long-form journal, an ink archive or several related projects in one volume. Its A5 format offers a comfortable writing area while remaining easier to handle and carry than a larger desktop notebook.

The full-page 5 mm square grid is printed in a restrained indigo tone. It supports consistent handwriting, proportional layouts, tables, diagrams and data visualisation without dominating the page. The ruling provides structure while allowing the colour and character of the writing ink to remain clearly visible.

New Sub Dot Grid ruling

SAKAE prints the ruling with its New Sub Dot Grid system. Rather than using completely solid lines, each line is constructed from minute sub-dots separated by spaces that are almost invisible to the eye. This reduces the total printed area while preserving the appearance of a continuous, evenly defined grid.

The microscopic spaces within the printed lines allow writing ink to meet more of the paper surface. The system is designed to help reduce bleed-through where handwriting crosses the ruling. The grid remains clear enough to guide the layout while allowing handwritten lines, shading and ink colour to command the page.

52gsm Tomoe River FP paper

The notebook contains white 52gsm Tomoe River FP paper manufactured in Japan by Sanzen Paper Manufacturing. The FP designation refers to its fountain pen focus and identifies a range created to reveal the behaviour and character of writing inks. Its smooth surface allows users to observe ink colour, shading and the surface sheen produced by certain formulations.

Because this paper is exceptionally thin, writing may remain visible from the reverse. This show-through, often called ghosting, does not necessarily mean that ink has penetrated the sheet. Bleed-through occurs only when ink passes through and marks the opposite face. At Inktraveler, we find this distinction particularly useful when assessing a paper test, as both effects can vary according to the ink, nib width and flow, drying time and repeated strokes over the same area.

Hardcover construction and thread-sewn binding

The thread-sewn binding supports comfortable opening and makes the writing area close to the spine easier to use. A rigid cover provides stability and protection for a notebook designed to hold extensive writing. The Tomoe River FP symbol and paper paper mark are stamped on the cover, while the included transparent protector helps preserve its exterior during regular use and transport.

Package contents

The package contains one SAKAE TP Tomoe River FP A5 hardcover notebook with 368 white pages, a full-page 5 mm indigo square grid and a transparent protective cover. Made in Japan. (Photographs are for reference; colour and minor visual details may vary slightly according to the screen or production batch.)

Technical specifications

Brand: SAKAE TP
Range: Tomoe River FP
Format: A5
Paper: white Tomoe River FP manufactured by Sanzen
Paper weight: 52gsm
Page count: 368 pages
Ruling: 5 mm indigo square grid
Grid system: New Sub Dot Grid
Binding: thread-sewn
Cover: hardcover with transparent protector included
Product reference: SR-A5HBW
JAN and EAN-13: 4909171853520
Country of origin: Japan

History and philosophy of SAKAE Technical Paper

SAKAE Technical Paper is a Japanese company involved in the planning, manufacture, conversion and sale of paper and stationery products. The present company was established in 2016, continuing a paper-goods tradition connected with the Tochiman name since 1960. Through its paper paper brand, SAKAE explores paper as both a practical material and an expressive medium for writing, drawing and creative work.

Tomoe River paper was originally manufactured by Tomoegawa. In 2021, the company announced the transfer of the relevant sales agreements, trademark rights and inventory to Sanzen Paper Manufacturing, ensuring continued production and distribution. Introduced by SAKAE in June 2023, this current notebook uses Sanzen-made Tomoe River paper while preserving the thin profile and fountain-pen-oriented writing experience associated with the FP range.

“A quiet grid gives every idea structure without deciding where it must go.”