Folded disposable diaper having indicia that visually change or become visible when the diaper is unfolded

1. A disposable diaper, wherein the disposable diaper is a pants type disposable diaper having a waist opening, two leg openings and opposite ventral and dorsal sides, said diaper comprising at least one predetermined illustration displayed on an outer surface thereof;

wherein the disposable diaper has a folded state in which at least a portion of the illustration is hidden;

wherein the diaper further has a unfolded state in which the hidden portion of the illustration is exposed;

wherein the disposable diaper in the folded state has opposite side portions of the disposable diaper being folded along first and second folding lines substantially orthogonal to an edge of the waist opening, wherein the outer surface of said diaper on either said ventral side or said dorsal side contacts with itself; and

wherein the illustration comprises a first illustration, a second illustration, and a third illustration;

wherein the disposable diaper comprises:

a first face on which the first illustration is provided, the first face being the outer surface of said diaper on one of the ventral side and the dorsal side of the diaper; and

a second face on which the second illustration is provided, the second face being other than the first face; and

wherein the third illustration is visible when the diaper is in the folded state in which the hidden portion of the first illustration on the first face is covered with at least a portion of the second illustration on the second face.

2. The disposable diaper according to claim 1 , wherein the second face is the outer surface of said diaper on the other one of the dorsal side and the ventral side.

3. The disposable diaper according to claim 1 , wherein the first illustration and the third illustration express a story, and

wherein the third illustration expresses a first part of the story, and the first illustration when fully visible expresses a second part of the story.

4. The disposable diaper of claim 1 ,

wherein, when said diaper is in said folded state, said second illustration partially covers the first illustration and defines together with a uncovered portion of said first illustration the third illustration, and wherein said first illustration when fully visible is different from said third illustration.

5. The disposable diaper according to claim 4 , wherein

said first illustration when fully visible comprises a character dominantly displayed in said first illustration; and

in said third illustration, the same character is dominantly displayed, said character being changed in facial expression from one of said first and third illustrations to the other.

6. The disposable diaper according to claim 1 , wherein

the first illustration is different from the third illustration which is formed when the diaper is in the folded state, the third illustration is changed to the first illustration when said disposable diaper is unfolded from the folded state to the unfolded state.

7. The disposable diaper according to claim 1 , wherein said first illustration has a size of about 64 centimeters squared.

8. The disposable diaper according to claim 1 , wherein the disposable diaper is configured for a baby younger than 36 months old.

9. The disposable diaper according to claim 1 , wherein the disposable diaper is configured for a baby whose weight is less than 15 kg.

10. The disposable diaper according to claim 1 , wherein, when the disposable diaper is in the folded state, the edge of the waist opening and a peripheral edge of each of the leg openings are also folded.

11. The disposable diaper according to claim 1 , wherein

the edge of the waist opening intersects the first and second folding lines; and

a peripheral edge of each of the leg openings intersects a respective one of said first and second folding line.

12. The disposable diaper according to claim 11 , wherein the peripheral edge of each of the leg openings intersects the respective one of said first and second folding line twice.

13. The disposable diaper according to claim 12 , wherein

the second illustration is completely located in the side portions of the disposable diaper;

the first illustration is completely located in a central portion of the disposable diaper between said side portion; and

each of the first and second folding lines defines a border between said central portion and a respective one of said side portions.

14. The disposable diaper according to claim 13 , wherein

the second illustration includes first and second parts each being completely located in one of said side portions of the disposable diaper.