Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
30 words
A reversible optical information recording medium having a thin film made of a material consisting essentially of ternary elements of Te, 0 and Au, and further containing Ge or Se.
Claim 2
Dependent Claim
30 words
A reversible optical information recording medium having a thin film made of a material consisting essentially of ternary elements of Te, 0 and Au, and further containing Ge or Se.
Claim 3
Dependent Claim
39 words
A reversible optical information recording medium according to claim 1, wherein the composition ratio of Te, Ge and Au in said film falls within a region which is defined by points A, B, C and D in Fig. 10.
Claim 4
Dependent Claim
27 words
A reversible optical information recording medium according to claim 1 or 2, wherein the composition ratio of oxygen in said film ranges between 10 and 40 at%.
Claim 5
Dependent Claim
47 words
A reversible optical information recording medium according to claim 1, wherein said film is made of a material consisting essentially of quaternery elements of Te, O, Au and Ge and further containing at least one element selected from a group consisting of Sn, In, Bi and Sb.
Claim 6
Dependent Claim
79 words
A reversible optical information recording medium according to claim 4, wherein the composition ratio of the sum of the numbers of atoms of Te, Sn, and Ge and the numbers of atoms of Au and 0 falls within the region surrounded by points E 1 to I 1 in Fig. 16, and wherein the ratio of numbers of atoms of Te, Sn, and Ge falls within the region defined by points J 1 to O 1 in Fig. 17.
Claim 7
Dependent Claim
79 words
A reversible optical information recording medium according to claim 4, wherein the composition ratio of the sum of the numbers of atoms of Te, In and Ge and the numbers of atoms of Au and 0 falls within the region surrounded by points E 2 to I 2 in Fig. 18, and wherein the ratio of numbers of atoms of Te, In and Ge falls within the region defined by points J 2 to 0 2 in Fig. 19.
Claim 8
Dependent Claim
78 words
A reversible optical information recording medium according to claim 4, wherein the composition ratio of the sum of the numbers of atoms of Te, Bi and Ge and the numbers of atoms of Au and 0 falls within the region surrounded by points E 3 to I3 in Fig. 21, and wherein the ratio of numbers of atoms of Te, Bi and Ge falls within the region defined by points J 3 to 0 3 in Fig. 21.
Claim 9
Dependent Claim
78 words
A reversible optical information recording medium according to claim 4, wherein the composition ratio of the sum of the numbers of atoms of Te, Sb and Ge and the numbers of atoms of Au and 0 falls within the region surrounded by points E 4 to I4 in Fig. 22, and wherein the ratio of numbers of atoms of Te, Sb and Ge falls within the region defined by points J 4 to 0 4 in Fig. 23.
Claim 10
Dependent Claim
66 words
A reversible optical information recording medium according to claim 1, wherein the ratio of numbers of atoms of Te and 0 and the sum of numbers of atoms of Au and Se falls within the region defined by points P, S, T, W in Fig. 24, and wherein the ratio of Au to Se (r = Au/Se) meets the condition of 1/2 S r 5 5.
Claim 11
Dependent Claim
68 words
A reversible optical information recording medium according to claim 1 or 9, wherein the ratio of numbers of atoms of Te and 0 and the sum of numbers of atoms of Au and Se falls within the region defined by points Q, R, U, V, in Fig. 24, and wherein the ratio of Au to Se (r = Au/Se) meets the condition of 1 ≦ r S 2.
Claim 12
Dependent Claim
26 words
A reversible optical information recording medium according to claim 9, consisting essentially of ternary elements of Te, 0 and Au, and Se, and further containing Ge.
Claim 13
Dependent Claim
24 words
A reversible optical information recording medium according to claim 11, wherein the concentration of Ge in said film ranges between 1 and 10 at%.
Claim 14
Dependent Claim
40 words
A reversible optical information recording medium according to claim 9, consisting essentially of ternary elements of Te, 0 and Au, and Se, and further containing at least one element selected from the group consisting of Sn, In, Bi and Sb.
Claim 15
Dependent Claim
32 words
A reversible optical information recording medium according to claim 13, wherein the sum of amounts of addition of Sn, In, Bi and Sb is selected to range between 5 and 20 at%.