Sakura Color Products Corporation

Marimo Mori

Takeshi Sakumura

Yasuaki Hirata

Provided is a plasma treatment detection indicator that enables the completion of plasma treatment to be confirmed from the color change of a color-changing layer by controlling the color change rate, regardless of whether the type of plasma is reduced-pressure plasma or atmospheric-pressure plasma, and regardless of the degree of plasma intensity; also provided is an ink composition for detecting plasma treatment for forming the color-changing layer. The ink composition for detecting plasma treatment comprises an organic dye and at least one member selected from the group consisting of a photopolymerization initiator, silica, and hydrophobic alumina.

Ink composition for plasma treatment detection, and plasma treatment detection indicator

This invention provides a plasma treatment detection indicator that uses a fibrous base material or a synthetic resin base material comprising a coloring pigment as a base material and in which fine fiber pieces or coloring pigment is prevented from being generated in a powder form from the base material in plasma treatment. More specifically, this invention provides a plasma treatment detection indicator comprising a base material and at least a color-changing layer that changes color in a plasma treatment atmosphere, the color-changing layer being disposed above part or all of a surface of the base material, (1) the base material being a fibrous base material or a synthetic resin base material comprising a coloring pigment, and (2) a resin-based or inorganic transparent cover layer that covers all of the surface of the base material being disposed between the base material and the color-changing layer.

Plasma processing detection indicator

An object of the present invention is to provide: a plasma treatment detection indicator comprising a color-changing layer that exhibits improved heat resistance so that the layer does not change color even when overheated at up to about 170&#xb0; C. as a result of a plasma-generating gas not being supplied or being insufficient due to a defect in a plasma treatment device; and an ink composition for detecting plasma treatment, the composition being for forming the color-changing layer. The ink composition for detecting plasma treatment includes a colorant and a binder resin containing a phenol resin, and the plasma treatment detection indicator uses the ink composition.

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Osaka, Japan

Marimo Mori