Composite sheet, method of preparing same, and adhesive label sheet assembly having same
AssigneeRicoh Company, Ltd.
InventorsMasahiro Sato, Masanaka Nagamoto, Takeshi Akimoto
Life of this patent
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Abstract
A composite sheet including a paper layer made of a wood pulp having a Canadian standard freeness value of 350 to 500 ml, a transparency improving layer provided over one side of the paper layer, and a release liner provided over the transparency improving layer. The composite sheet has a transmittance of at least 10 to 20% for a light with a wavelength of 940 to 960 nm and a bulk density of 0.90 to 1.15 g/cm3. A thermosensitive recording adhesive label sheet has the above composite sheet and a thermosensitive recording sheet provided on the composite sheet through an adhesive layer.
Claims12
A composite sheet comprising a paper layer made of a wood pulp having a Canadian standard freeness value of 350 to 500 ml, a transparency improving layer provided over one side of said paper layer, and a release liner provided over an opposite surface of said transparency improving layer from said paper layer, said composite sheet having a transmittance of 10 to 20% for a light with a wavelength of 940 to 960 nm and a bulk density of 0.90 to 1.15 g/cm3.
Dependencies are inferred from the claim text.