What is claimed is:
1. A tacky ink comprising:
a solvent;
a coloring agent; and
additives comprising a tackiness agent for imparting tackiness to the ink composition.
2. The tacky ink of claim 1 wherein the tackiness agent is polyethylene oxide.
3. The tacky ink of claim 2 wherein the polyethylene oxide is expressed by the following structural formula: HO(CH2CH2O)nCH2CH2OH where n is ranged from 400 to 1,000,000.
4. The tacky ink of claim 2 wherein the polyethylene oxide is expressed by the following structural formula: HO(CH2CH2O)nCH2CH2OH where n is ranged from 100,000 to 300,000.
5. The tacky ink of claim 1 wherein the amount of the tackiness agent is 0.01-20 weight percents of the ink composition.
6. The tacky ink of claim 1 wherein the amount of the tackiness agent is 0.1-10 weight percents of the ink composition.
7. The tacky ink of claim 1 wherein the coloring agent is formed with one or more pigments soluble in the solvent such as oil pigment, water pigment, and fluorescent pigment, or with one or more kinds of particles distributed in the ink composition such as pigment or dye, metallic powder, mica powder, fluorescent dye, and phosphorescent dye.
8. The tacky ink of claim 1 wherein the additives comprise aromatic materials.
9. A pen using a tacky ink, the pen comprising:
an ink storage unit with a tube for storing the tacky ink therein and a tip partially inserted into an end portion of the tube, the tacky ink having a composition of a solvent, a coloring agent and additives, the additives comprising a tackiness agent for imparting tackiness to the ink composition;
a case receiving the ink storage unit; and
a cap inserted into an end portion of the case while receiving the tip of the ink storage unit.
10. The tacky ink of claim 9 wherein the tackiness agent is polyethylene oxide.
11. The tacky ink of claim 10 wherein the polyethylene oxide is expressed by the following structural formula: HO(CH2CH2O)nCH2CH2OH where n is ranged from 400 to 1,000,000.
12. The tacky ink of claim 9 wherein the amount of the tackiness agent is 0.01-20 weight percents of the ink composition.
13. The tacky ink of claim 9 wherein the coloring agent is formed with one or more pigments soluble in the solvent such as oil pigment, water pigment, and fluorescent pigment, or with one or more kinds of particles distributed in the ink composition such as pigment or dye, metallic powder, mica powder, fluorescent dye, and phosphorescent dye.
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. A honeycomb filter for purifying exhaust gases which has a structure in which:
a columnar body made of porous ceramic comprises a number of through holes, said through holes being placed in parallel with one another in the length direction with wall portion interposed therebetween;
a sealing material layer is formed on a circumference portion of said columnar body; and
said wall portion which separates said through holes functions as a filter for collecting particulates,
wherein
a rate S\u03b1 of an area occupied by the sealing material layers to the total area of a cross-section including the through holes in the direction perpendicular to the through holes, in said honeycomb filter for purifying exhaust gases, is set to 0.5% or more, and
a rate V\u03b1 of organic components to the honeycomb filter for purifying exhaust gases is set to 0.5% by weight or less.
2. The honeycomb filter for purifying exhaust gases according to claim 1,
wherein
a catalyst for purifying exhaust gases is supported inside the columnar body.
3. A honeycomb filter for purifying exhaust gases which has a structure in which:
a plurality of a columnar porous ceramic member are combined with one another through a sealing material layer to form a ceramic block, each of said columnar porous ceramic member comprising a number of through holes, said through holes being placed in parallel with one another in the length direction with partition wall interposed therebetween;
a sealing material layer is formed on a circumference portion of said ceramic block; and
said partition wall which separates said through holes functions as a filter for collecting particulates,
wherein
a rate S\u03b2 of an area occupied by the sealing material layers to the total area of a cross-section including the through holes in the direction perpendicular to the through holes, in said honeycomb filter for purifying exhaust gases, is set to 2% or more, and
a rate V\u03b2 of organic components to said honeycomb filter for purifying exhaust gases is set to 0.5% by weight or less.
4. The honeycomb filter for purifying exhaust gases according to claim 3,
wherein
a catalyst for purifying exhaust gases is supported inside the porous ceramic member.
5. The honeycomb filter for purifying exhaust gases according to claim 1,
wherein
a sealing material layer has adhesive function.
6. The honeycomb filter for purifying exhaust gases according to claim 1,
wherein
a sealing material layer contains an inorganic binder andor inorganic particles.
7. The honeycomb filter for purifying exhaust gases according to claim 2, wherein
a sealing material layer has adhesive function.
8. The honeycomb filter for purifying exhaust gases according to claim 3,
wherein
a sealing material layer has adhesive function.
9. The honeycomb filter for purifying exhaust gases according to claim 4,
wherein
a sealing material layer has adhesive function.
10. The honeycomb filter for purifying exhaust gases according to claim 2,
wherein
a sealing material layer contains an inorganic binder andor inorganic particles.
11. The honeycomb filter for purifying exhaust gases according to claim 3,
wherein
a sealing material layer contains an inorganic binder andor inorganic particles.
12. The honeycomb filter for purifying exhaust gases according to claim 4,
wherein
a sealing material layer contains an inorganic binder andor inorganic particles.
13. The honeycomb filter for purifying exhaust gases according to claim 5,
wherein
a sealing material layer contains an inorganic binder andor inorganic particles.
14. The honeycomb filter for purifying exhaust gases according to claim 7, wherein
a sealing material layer contains an inorganic binder andor inorganic particles.
15. The honeycomb filter for purifying exhaust gases according to claim 8,
wherein
a sealing material layer contains an inorganic binder andor inorganic particles.
16. The honeycomb filter for purifying exhaust gases according to claim 9,
wherein
a sealing material layer contains an inorganic binder andor inorganic particles.