What is claimed is:
1. An ink jet ink composition comprising water, humectant and a self-assembling colorant that is capable of spontaneously forming a nanoparticulate dispersion without any prior physical attrition or surface modification, said colorant having the formula:
(A)m-Q-(Z)n
wherein: Q represents a chromophore;
each A independently represents an organic or inorganic group capable of hydrogen bonding or other non-covalent bonding;
each Z independently represents an organic or inorganic group capable of electrostatic bonding; and
m and n each independently represents an integer from 0 to 10;
with the proviso that nm is at least 1; and with the further proviso that at least about 50 wt. % of the colorant is present in the composition as particles.
2. The composition of claim 1 wherein said Q represents a colorant selected from the class consisting of anthraquinone, naphthoquinone, quinacridone, quinophthalone, indigo, thioindigo, perylene, dioxazine, 1,4-diketopyrrolopyrrole, anthrapyridine, anthrapyrimidine, anthanthrone, flavanthrone, indanthrone, isoindoline, isoindolinone, perinone, pyranthrone, porphyrin, and azo chromophores.
3. The composition of claim 1 wherein each said A independently represents sulfonate, sulfinate, phosphonate, carboxylate, ammonium, substituted ammonium, pyridinium, amidinium or guanidinium.
4. The composition of claim 1 wherein each said Z independently represents hydroxy, a sugar residue, a polyoxyalkylene group, a sulfamoyl or carbamoyl group and its mono- and di-substituted derivatives, a heterocyclic group or an alkylsulfonyl group.
5. The composition of claim 1 wherein said colorant is present in an amount of from about 0.2 to about 10 wt. %, said humectant is present in an amount of from about 5 to about 70 wt. %, and the balance is water.
6. The composition of claim 1 which also includes a water-soluble dye.
7. The composition of claim 1 wherein said particles are less than about 0.3 m in size.
8. The composition of claim 1 wherein said particles are less than about 0.1 m in size.
9. The composition of claim 1 wherein said colorant has the formula:
11
wherein: each R1 independently represents an alkyl group of from 1 to about 6 carbon atoms, an alkoxy group of from 1 to about 6 carbon atoms, an alkoxycarbonyl group of from 1 to about 6 carbon atoms, halogen, cyano, nitro, carbamoyl, alkylsulfonyl, an alkylcarbamoyl group of from 1 to about 6 carbon atoms or a dialkylcarbamoyl group of from 1 to about 6 carbon atoms;
R2 and R3 each independently represents H or an alkyl group of from 1 to about 6 carbon atoms, optionally substituted with one or more groups chosen from hydroxy, amino, dialkylamino, alkoxy, halogen, nitro, cyano, alkoxycabonyl and acyloxy;
R2 and R3 may also be part of a 5- to 7-membered heterocyclic ring;
x represents an integer from 0 to 4; and
Y represents hydrogen, alkali metal or an organic cation.
10. The composition of claim 1 wherein said support is paper, resin-coated paper or a plastic.
11. The composition of claim 1 wherein said image-receiving layer comprises interconnecting pores.
12. The composition of claim 11 wherein said image-receiving layer comprises from about 20% to about 95% inorganic particles and from about 5% to about 80% of a polymeric binder.
13. The composition of claim 11 wherein said image-receiving layer comprises organic particles.
14. The composition of claim 11 wherein said image-receiving layer comprises a polymeric open-pore membrane.
15. The composition of claim 12 wherein said inorganic particles comprise silica, alumina, titanium dioxide, clay, calcium carbonate, barium sulfate or zinc oxide.
16. The composition of claim 12 wherein said polymeric binder is gelatin, poly(vinyl alcohol), poly(vinyl pyrrolidinone) or poly(vinyl acetate) or copolymers thereof.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An instrumental device comprising:
a dial plate formed in a circular plate shape, and on which indexes indicating a condition of a mobile object are arranged in a circumferential direction of the dial plate;
a case provided with a concave formed in a concave groove shape along the indexes, and to which the dial plate is attached so as to cover an opening of the concave; and
a light source provided on a rear side of the dial plate in the concave, opposite to the index, and emitting light toward the index,
wherein the case is provided with a light shield interposed between the index and the light source and facing the light source, and
wherein at least a part of an outer periphery of the light shield is formed in an arc shape so that a distance from an outer periphery of the concave is constant.
2. The instrumental device as claimed in claim 1,
wherein the index is positioned at an outside or an inside of the opening,
wherein an inner peripheral wall of the concave is so provided as to reflect light from the light source,
wherein the inner peripheral wall is provided with a first inclined wall inclined in a direction approaching the dial plate as extended outward, and a second inclined wall inclined in a direction approaching the dial plate as extended inward, and
wherein an inclination of one wall provided with the index of the first and second inclined walls is formed smaller than an inclination of the other wall away from the index.
3. The instrumental device as claimed in claim 1, wherein an inner periphery of the light shield is formed in an arc shape projecting outward.
4. The instrumental device as claimed claim 2, wherein an inner periphery of the light shield is formed in an arc shape projecting outward.
5. The instrumental device as claimed in claim 1, wherein the outer periphery of the light shield is provided with a round portion of which distance from the outer periphery of the concave is longer as extended toward an end of the outer periphery of the light shield.
6. The instrumental device as claimed in claim 2, wherein the outer periphery of the light shield is provided with a round portion of which distance from the outer periphery of the concave is longer as extended toward an end of the outer periphery of the light shield.
7. The instrumental device as claimed in claim 3, wherein the outer periphery of the light shield is provided with a round portion of which distance from the outer periphery of the concave is longer as extended toward an end of the outer periphery of the light shield.
8. The instrumental device as claimed in claim 4, wherein the outer periphery of the light shield is provided with a round portion of which distance from the outer periphery of the concave is longer as extended toward an end of the outer periphery of the light shield.
9. The instrumental device as claimed in claim 2, further comprising:
a pair of legs configured to connect the light shield and the concave and to reflect the light from the light source to the first or second inclined wall, said legs respectively projected outward from both ends of the outer periphery of the light shield.
10. The instrumental device as claimed in claim 3, further comprising:
a pair of legs configured to connect the light shield and the concave and to reflect the light from the light source to the first or second inclined wall, said legs respectively projected outward from both ends of the outer periphery of the light shield.
11. The instrumental device as claimed in claim 4, further comprising:
a pair of legs configured to connect the light shield and the concave and to reflect the light from the light source to the first or second inclined wall, said legs respectively projected outward from both ends of the outer periphery of the light shield.
12. The instrumental device as claimed in claim 5, further comprising:
a pair of legs configured to connect the light shield and the concave and to reflect the light from the light source to the first or second inclined wall, said legs respectively projected outward from both ends of the outer periphery of the light shield.
13. The instrumental device as claimed in claim 6, further comprising:
a pair of legs configured to connect the light shield and the concave and to reflect the light from the light source to the first or second inclined wall, said legs respectively projected outward from both ends of the outer periphery of the light shield.
14. The instrumental device as claimed in claim 7, further comprising:
a pair of legs configured to connect the light shield and the concave and to reflect the light from the light source to the first or second inclined wall, said legs respectively projected outward from both ends of the outer periphery of the light shield.
15. The instrumental device as claimed in claim 8, further comprising:
a pair of legs configured to connect the light shield and the concave and to reflect the light from the light source to the first or second inclined wall, said legs respectively projected outward from both ends of the outer periphery of the light shield.