Tidemark mounts every handscroll on one continuous rail and follows the pigment as it advances — logging each archival pass at the exact tideline where the wet front settles into fiber.
Lay the scroll flat and register it against the baseline rail before any pigment is read.
A pass sweeps across; the luminous seam marks exactly where saturation meets dry fiber.
Where the front recedes it leaves an iron stain — Tidemark seals it into the register.
Saturation, pooling, and the iron tideline are captured in one read — not a flat scan but the ink's behaviour, the thing a conservator actually trusts.
Tidemark holds the wet state and the dried state side by side on the rail, so a folio's whole history reads in one sweep.
Across nineteen mounted folios on the Mogami collection rail.
Each pass logged at the tideline, sealed once the pigment stabilises.
Permanent iron marks, registered and catalogued by conservator.
Ink is not placed on the page. It is let go — and the paper decides where the line will end.