(57) To obtain a woody plate material having an impression of high quality material easily
and at a low cost by processing a surface of a woody material, such as a veneer, plywood
or a plate material obtained by lumbering, to have a grain pattern and touch which
closely resemble a desired natural wood. When embossing a xylem surface pattern such
as conduit pipes, and printing a grain pattern such as a cross grain, simultaneously
on a surface of a plate-like woody material A1, an embossing roller 3 having a xylem
surface pattern which matches a desired grain pattern projected on its surface is
used for embossing a concave xylem surface pattern on a surface of the woody material
A1 and, simultaneously, the embossed portion is supplied with ink by an ink feeding
device, and then, a grain pattern which matches the xylem surface pattern embossed
on the surface is printed by a printing roller 8 so as to obtain a woody plate material
having a desired grain pattern.
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