1. An electrophotographic toner, which is decolorized by heating, comprising an electron donating color former compound, an electron accepting color developing agent, and a polyester binder resin having a weight average molecular weight Mw of 6000 or more and 25000 or less.
2. The toner according to claim 1, wherein the toner has a glass transition point of 35\xb0 C. or higher and 65\xb0 C. or lower.
3. The toner according to claim 1, wherein the toner has a softening point of 80\xb0 C. or higher and 120\xb0 C. or lower.
4. The toner according to claim 1, wherein the toner has a toluene insoluble content of 10% by mass or more and 40% by mass or less.
5. The toner according to claim 1, wherein the toner has an acid value of 25 mgKOHg or less.
6. The toner according to claim 1, further comprising a temperature control agent.
7. The toner according to claim 6, wherein at least the electron donating color former compound, the electron accepting color developing agent, and the temperature control agent are microencapsulated.
8. The toner according to claim 1, wherein the toner is decolorized at a temperature higher than the fixing temperature of the toner.
9. The toner according to claim 1, further comprising at least one type of fine particles having an average primary particle diameter of 50 nm or more and 200 nm or less, wherein the coverage of toner particles of the toner with the fine particles having an average primary particle diameter of 50 nm or more and 200 nm or less is 30% or less per fine particles of one kind of substance, and the coverage of the toner particles with all of the fine particles is 50% or more and 150% or less.
10. The toner according to claim 9, wherein the fine particles comprise any of silica, titania, alumina, strontium titanate, and tin oxide.
11. The toner according to claim 1, wherein the electron donating color former compound is a leuco dye.
12. A toner cartridge containing the electrophotographic toner according to claim 1.
13. An image forming apparatus comprising the electrophotographic toner according to claim 1.
14. An electrophotographic toner, which is decolorizable with heat, comprising an electron donating color former compound, an electron accepting color developing agent, and a polyester binder resin having a weight average molecular weight Mw of 6000 or more and 25000 or less.
15. The toner according to claim 14, further comprising a temperature control agent.
16. The toner according to claim 15, wherein at least the electron donating color former compound, the electron accepting color developing agent, and the temperature control agent are microencapsulated.
17. The toner according to claim 14, wherein the toner is decolorized with heat which make the temperature control agent heated to a temperature not lower than the melting point of the temperature control agent.
18. A toner cartridge containing the electrophotographic toner according to claim 14.
19. An image forming apparatus comprising the electrophotographic toner according to claim 14.
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 method for manufacturing a panel for a reflective broadband electromagnetic shield, the method comprising the steps of:
(a) forming a core of substantially the same size and same shape as the panel, the core having first and second surfaces on opposite sides thereof with the distance between the first and second surfaces defining the thickness of the core;
(b) building a layered, reflective broadband electromagnetic shielding cover having a thickness substantially less than the thickness of the core; and
(c) disposing the cover on the first surface of the core.
2. A method as recited n claim 1, wherein the step of building comprises the steps of:
(a) forming metal into a porous first stratum exhibiting pronounced low-frequency electromagnetic shielding properties;
(b) assembling electrically-conductive elements into a second stratum exhibiting pronounced high-frequency electromagnetic shielding properties; and
(c) securing the second stratum to the first stratum in an overlapping electrically-continuous relationship.
3. A method as recited in claim 2, wherein the first stratum comprises a metallic lattice.
4. A method as recited in claim 3, wherein the metallic lattice has a form chosen from a group comprising metal screening, metal mesh, expanded metal foil, and perforated metal sheeting.
5. A method as recited in claim 2, wherein the first stratum comprises at least two metallic lattices and each such metallic lattice has a form chosen from a group comprising metal screening, metal mesh, expanded metal foil, and perforated metal sheeting, each of the metallic lattices differs in form from at least one other metallic lattice.
6. A method as recited in claim 2, wherein the first stratum comprises a noncontinuous metal film disposed on the first surface of the core using a process selected from the group of processes comprising spraying, vapor deposition, electrodeposition, dipping, rolling, and brushing.
7. A method as recited in claim 2, further comprising the step of applying adhesive between the first stratum and the first face of the core.
8. A method as recited in claim 2, wherein the electrically-conductive elements of the second stratum comprise a non-woven veil of electrically-nonconductive fibers coated by a metal.
9. A method as recited in claim 8, wherein the fibers assume a form selected from the group comprising a scrim, a mat, and a paper.
10. A method as recited in claim 8, wherein the step of assembling comprises the steps of:
(a) selecting electrically-nonconductive fibers;
(b) metalizing individual of the fibers to produce individually-metalized fibers; and
(c) arraying the individually-metalized fibers as a non-woven veil.
11. A method as recited in claim 8, wherein the step of assembling comprises the steps of:
(a) selecting electrically-nonconductive fibers;
(b) arraying the fibers as a non-woven veil; and
(c) metalizing the non-woven veil.
12. A method for manufacturing a panel for a reflective broadband electromagnetic shield, the method comprising the steps of:
(a) forming a core of substantially the same size and same shape as the panel, the core having first and second surfaces on opposite sides thereof with the distance between the first and second surfaces defining the thickness of the core;
(b) forming metal into a porous metallic lattice exhibiting pronounced low-frequency electromagnetic shielding properties;
(c) assembling a non-woven veil of electrically-nonconductive fibers coated by a metal exhibiting pronounced high-frequency electromagnetic shielding properties;
(d) securing the non-woven veil of electrically-nonconductive fibers coated by a metal to the porous metallic lattice in an overlapping electrically-continuous relationship to form a layered, reflective broadband electromagnetic shielding cover having a thickness substantially less than the thickness of the core; and
(e) disposing the cover on the first surface of the core.
13. A method as recited in claim 12, wherein the metallic lattice has a form chosen from a group comprising metal screening, metal mesh, expanded metal foil, and perforated metal sheeting.
14. A method as recited in claim 12, wherein the electrically-nonconductive fibers assume a form selected from the group comprising a scrim, a mat, and a paper.
15. A method as recited in claim 12, wherein the step of assembling comprises the steps of:
(a) selecting electrically-nonconductive fibers;
(b) metalizing individual of the fibers to produce individually-metalized fibers; and
(c) arraying the individually-metalized fibers as a non-woven veil.
16. A method as recited in claim 12, wherein the step of assembling comprises the steps of:
(a) selecting electrically-nonconductive fibers;
(b) arraying the fibers as a non-woven veil; and
(c) metalizing the non-woven veil.
17. A method for manufacturing a panel for a reflective broadband electromagnetic shield, the method comprising the steps of:
(a) forming a core of substantially the same size and same shape as the panel, the core having first and second surfaces on opposite sides thereof with the distance between the first and second surfaces defining the thickness of the core;
(b) forming metal into a porous metallic lattice exhibiting pronounced low-frequency electromagnetic shielding properties;
(c) selecting electrically-nonconductive fibers;
(d) forming a non-woven veil of electrically-nonconductive fibers coated by a metal from the selected electrically-nonconductive fibers so that the a non-woven veil of electrically-nonconductive fibers coated by a metal exhibits pronounced high-frequency electromagnetic shielding properties;
(e) securing the non-woven veil of electrically-nonconductive fibers coated by a metal to the porous metallic lattice in an overlapping electrically-continuous relationship to form a layered, reflective broadband electromagnetic shielding cover having a thickness substantially less than the thickness of the core; and
(f) disposing the cover on the first surface of the core.
18. A method as recited in claim 17, wherein the step of forming a non-woven veil of electrically-nonconductive fibers coated by a metal comprises the steps of:
(a) metalizing individual of the fibers to produce individually-metalized fibers; and
(b) arraying the individually-metalized fibers as a non-woven veil.
19. A method as recited in claim 17, wherein the step of forming a non-woven veil of electrically-nonconductive fibers coated by a metal comprises the steps of:
(a) arraying the fibers as a non-woven veil; and
(b) metalizing the non-woven veil.