Patent ID: 11871782
Assignee: JAPAN TOBACCO INC.
Field: Measurement (Instruments)
Classification: CPC A  D  G | IPC A  D  G

Claim 3:
4. A multifilter segment comprising:
a plurality of filter segments comprising a plurality of filter materials and inner wrappers respectively covering outer surfaces of the plurality of filter materials; and
an outer wrapper which connects and integrates the filter segments by being wound around outer surfaces of the inner wrappers of the plurality of filter segments while end portions of the filter segments are arranged face-to-face,
wherein the inner wrappers of the adjacent filter segments contain bleached wood pulp and unbleached wood pulp having ratios of the bleached wood pulp and the unbleached wood pulp different from each other,
wherein the inner wrappers of the adjacent filter segments have CIELab color parameters different from each other,
wherein the CIELab color parameters of the inner wrappers of the adjacent filter segments are different from each other such that a transmitted light intensity ratio is greater than or equal to 1.6 when red, blue or green light or light having a combination of two or more types passes through the adjacent filter segments,
wherein the outer wrapper is white paper,
wherein the outer wrapper does not affect a color transparency of the adjacent filter segments which satisfy the transmitted light intensity ratio of 1.6 or greater, and
wherein the outer wrapper has an opacity of 70% or less.