Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Reexamination Certificate
1998-11-09
2001-12-11
Hess, Bruce H. (Department: 1774)
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
C428S167000, C428S187000, C428S203000, C428S212000
Reexamination Certificate
active
06329040
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a decorative sheet used as a material for a table cover, a shower curtain, a window decoration sheet, a pouch and the like.
As a decorative substance whose pattern or color is changed depending upon a visual angle or a decorative substance for providing a three-dimensional effect to a plane sheet, a lenticular plate including semicylindrical lenses, namely, convex lenses each having an arch section, is conventionally used.
When a decorative substance like, for example, a post card is produced by using a lenticular plate, it is necessary to make a pitch of a printed material accurately accord with a pitch of the lenticular plate. Therefore, there are problems of very high accuracy required in the production, a high cost and a large percent of defectives.
Also, in general, in order to attain a 3-D (three-dimensional) effect, a three-dimensional image is photographically formed. Therefore, the usage of a lenticular plate is occasionally poor in generality, and merely a comparatively small product can be obtained by using a lenticular plate. Also, photographic paper or the like is necessary for placing a lenticular plate on material paper, and hence, the product is lack of flexibility. Moreover, since a lenticular plate has a structure in which above-mentioned semicylindrical lenses are repeatedly formed, when a soft material is used, a valley portion between the semicylindrical lenses can become a slit line and the product can be easily torn.
BRIEF SUMMARY OF THE INVENTION
The present invention was devised to overcome the aforementioned problems, and the object of the invention is providing a three-dimensional pattern on a plane sheet surface by forming designed portions on front and back surfaces of a translucent sheet material.
The decorative sheet of this invention comprises a first designed portion formed on one surface of a translucent sheet material and having a first pattern repeatedly formed with a predetermined pitch; and a second designed portion formed on the other surface of the translucent sheet material and having a second pattern similar to the first pattern.
Alternatively, the decorative sheet of this invention comprises a first designed portion formed on one surface of a translucent sheet material and having a first pattern repeatedly formed with a predetermined pitch; and a second designed portion formed on the other surface of the translucent sheet material and having a second pattern repeatedly formed with a predetermined pitch.
Accordingly, the decorative sheet can attain a three-dimensional effect in spite of its flatness by using the effect of parallax stereogram.
In the decorative sheet, the first pattern and the second pattern are formed by printing.
Thus, the patterns are formed on the both surfaces by printing, and hence, no slit line is formed, and the decorative sheet is difficult to tear.
In the decorative sheet, the first pattern is formed with irregularities each having a rectangular section, and the second pattern is formed by printing.
Thus, the first pattern is formed with the irregularities, and hence, the three-dimensional effect can be enhanced.
In the decorative sheet, the first pattern and the second pattern are formed with irregularities each having a rectangular section.
Thus, the first and second patterns are formed with the irregularities, and hence, the three-dimensional effect can be further enhanced due to the strong effect of the parallax stereogram.
In the decorative sheet, the second pattern is smaller than the first pattern.
Since the second pattern has a similar shape obtained by reducing the first pattern, when the decorative sheet is seen with the first designed portion disposed in front, a three-dimensional pattern having a depth can be formed thereon.
In the decorative sheet, the second pattern is larger than the first pattern.
Since the second pattern has a similar shape obtained by enlarging the first pattern, when the decorative sheet is seen with the first designed portion disposed in front, a three-dimensional pattern which looks to be formed above the surface can be formed thereon.
In the decorative sheet, the second pattern is formed by printing a moire pattern obtained by using the first pattern.
Since the moire pattern is used as the second pattern, the three-dimensional effect can be further enhanced due to the strong effect of the parallax stereogram.
In the decorative sheet, the first designed portion is obtained by forming the first pattern on one surface of another translucent sheet, and the second designed portion is obtained by forming the second pattern on one surface of still another translucent sheet.
Since the first pattern and the second pattern are thus separately formed, the respective designed portions can be freely combined. Therefore, the thickness of the decorative sheet can be adjusted by using the thicknesses of the sandwiched translucent sheet materials.
In the decorative sheet, the first designed portion is obtained by printing the first pattern on one surface of the translucent sheet material, and the second designed portion is obtained by printing the second pattern on the other surface of the translucent sheet material.
Accordingly, since the decorative sheet can be produced through duplex printing on the translucent sheet material, the number of processes can be reduced.
In the decorative sheet, the first designed portion is obtained by forming irregularities, that is convexities, each having a rectangular section, in the shape of the first pattern in a plan view on one surface of the translucent sheet material, and the second designed portion is obtained by printing the second pattern on the other surface of the translucent sheet material.
Alternatively, in the decorative sheet, the first designed portion is obtained by forming irregularities, each having a rectangular section, in the shape of the first pattern in a plan view on one surface of the translucent sheet material, and the second designed portion is obtained by forming irregularities, each having a rectangular section, in the shape of the second pattern in a plan view on the other surface of the translucent sheet material.
Accordingly, since the first and second designed portions are formed on the front and back surfaces of one translucent sheet material, there is no need to adhere the first and second designed portions to each other.
In the decorative sheet, a predetermined picture is formed on the first designed portion, the second designed portion or a front surface or a back surface of the translucent sheet material.
Since the predetermined picture is thus formed, the three-dimensional effect of the three-dimensional pattern can be further enhanced through perspective with this picture.
The above and further objects and features of the invention will more fully be apparent from the following detailed description with accompanying drawings.
REFERENCES:
patent: 5866233 (1999-02-01), Oshima et al.
patent: 6-143529 (1994-04-01), None
patent: 6-039500 (1994-05-01), None
patent: 2802484 (1998-07-01), None
Unexamined JP patent (English), JP 06-143529-A, May 24, 1994.
Ohtani Tatsurou
Oshima Masahiro
Shimizu Katsumi
Darby & Darby
Hess Bruce H.
Meiwa Gravure Co., Ltd.
Shewareged B.
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