1. A transparent toner for developing an electrostatic latent image comprising:
toner particles containing a binder resin; and
an external additive containing cerium oxide,
wherein a content of cerium in all toner particles is in the range of 0.05% by weight to 0.20% by weight, and
the cerium oxide contains neodymium, and a content of neodymium in all toner particles is in the range of 0.001% by weight to 0.015% by weight.
2. The transparent toner for developing an electrostatic latent image according to claim 1,
wherein the content of neodymium in all toner particles is in the range of 0.001% by weight to 0.010% by weight.
3. The transparent toner for developing an electrostatic latent image according to claim 1,
wherein the binder resin is polyester.
4. The transparent toner for developing an electrostatic latent image according to claim 1,
wherein a volume average particle size of cerium oxide is in the range of 0.3 \u03bcm to 5.0 \u03bcm.
5. The transparent toner for developing an electrostatic latent image according to claim 1,
wherein an amount of cerium oxide is in the range of 0.05 part by weight to 1.0 part by weight with respect to 100 parts by weight of the toner particles.
6. The transparent toner for developing an electrostatic latent image according to claim 1,
wherein a ratio of cerium to neodymium (CeNd) in cerium oxide is in the range of 4 to 150.
7. An electrostatic latent image developer comprising
the transparent toner for developing an electrostatic latent image according to claim 1.
8. The electrostatic latent image developer according to claim 7,
wherein, in the transparent toner for developing an electrostatic latent image, the content of neodymium in all toner particles is in the range of 0.001% by weight to 0.010% by weight.
9. A toner cartridge comprising
a toner accommodating chamber,
wherein the toner accommodating chamber contains the transparent toner for developing an electrostatic latent image according to claim 1.
10. The toner cartridge according to claim 9,
wherein, in the transparent toner for developing an electrostatic latent image, the content of neodymium in all toner particles is in the range of 0.001% by weight to 0.010% by weight.
11. A process cartridge for an image forming apparatus comprising:
an image holding member; and
a developing unit that forms a toner image by developing an electrostatic latent image, which is formed on a surface of the image holding member, using a developer,
wherein the developer is the electrostatic latent image developer according to claim 7.
12. The process cartridge for an image forming apparatus according to claim 11,
wherein, in the transparent toner for developing an electrostatic latent image, the content of neodymium in all toner particles is in the range of 0.001% by weight to 0.010% by weight.
13. An image forming apparatus comprising:
an image holding member;
a charging unit that charges a surface of the image holding member with electricity;
a latent image forming unit that forms an electrostatic latent image on the surface of the image holding member;
a developing unit that forms a toner image by developing the electrostatic latent image, which is formed on the surface of the image holding member, using a developer; and
a transfer unit that transfers the developed toner image onto a transfer medium,
wherein the developer is the electrostatic latent image developer according to claim 7.
14. The image forming apparatus according to claim 13,
wherein, in the transparent toner for developing an electrostatic latent image, the content of neodymium in all toner particles is in the range of 0.001% by weight to 0.010% by weight.
15. An image forming method comprising:
charging a surface of an image holding member with electricity;
forming an electrostatic latent image on the surface of the image holding member;
developing the electrostatic latent image to form a toner image, using a developer; and
transferring the toner image onto a transfer medium,
wherein the developer is the electrostatic latent image developer according to claim 7.
16. The image forming method according to claim 15,
wherein, in the transparent toner for developing an electrostatic latent image, the content of neodymium in all toner particles is in the range of 0.001% by weight to 0.010% by weight.
17. The image forming method according to claim 15,
wherein an amount of toner particles, which are deposited on the toner image transferred onto the transfer medium, is in the range of 3.0 gm2 to 20.0 gm2.
18. A toner image which is formed on a transfer medium using the transparent toner for developing an electrostatic latent image according to claim 1, wherein the toner image has a thickness of from 6.0 \u03bcm to 40.0 \u03bcm.
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 production of a stretched multilayer film comprising at least mono-axially stretching a multilayer structure under heating, wherein the multilayer structure comprises
a layer containing (A) vinyl alcohol-based resin having 1,2-diol unit in a side chain thereof represented by formula (1);
a layer laminated on at least one side of the layer containing the (A) vinyl alcohol-based resin, and containing (B) thermoplastic resin having a melting point of 125 to 300\xb0 C.; and
a layer of (C) adhesive resin intervened between the layer containing (A) vinyl alcohol-based resin and the layer containing (B) thermoplastic resin,
wherein the (C) adhesive resin has a melting point higher than the stretching temperature of the multilayer structure,
and wherein each of R1 to R6 independently represents hydrogen atom or an organic group, and X represents a single bond or binding chain.
2. The method for production of a stretched multilayer film according to claim 1, wherein the content of the 1,2-diol unit in a side chain to the layer containing the (A) vinyl alcohol-based resin is in the range of 0.1 to 30 mol %.
3. The method for production of a stretched multilayer film according to claim 1, wherein the 1,2-diol unit in a side chain is a structural unit represented by formula (1a).
4. The method for production of a stretched multilayer film according to claim 1, wherein the vinyl alcohol-based resin (A) is polyvinyl alcohol-based resin or a saponified product of ethylene-vinyl ester-based copolymer.
5. The method for production of a stretched multilayer film according to claim 1, wherein the vinyl alcohol-based resin (A) is a saponified product of ethylene-vinyl acetate-based copolymer having ethylene structural unit of 20 to 60 mol %.
6. The method for production of a stretched multilayer film according to claim 1, wherein the stretching process is performed at a stretching temperature of 40 to 250\xb0 C. as a temperature of the multilayer structure, and the stretching temperature is lower than melting points both of the layer containing the (A) vinyl alcohol-based resin and the layer containing the (B) thermoplastic resin.
7. The method for production of a stretched multilayer film according to claim 1, wherein the melting point of the (C) adhesive resin is higher than the stretching temperature by 1 to 40\xb0 C.
8. The method for production of a stretched multilayer film according to claim 1, wherein the (C) adhesive resin is a carboxylic acid-modified polyolefin-based resin having a melting point higher than the stretching temperature of multilayer structure in a stretching process.
9. The method for production of a stretched multilayer film according to claim 8, wherein the carboxylic acid-modified polyolefin-based resin is carboxylic acid-modified polypropylene-based resin.
10. The method for production of a stretched multilayer film according to claim 1, wherein the melting point of the (B) thermoplastic resin is in the range of 145 to 200\xb0 C.
11. The method for production of a stretched multilayer film according to claim 10, wherein the (B) thermoplastic resin is a polyolefin-based resin having a melting point of 145 to 200\xb0 C.
12. The method for production of a stretched multilayer film according to claim 11, the polyolefin-based resin is polypropylene-based resin.
13. The method for production of a stretched multilayer film according to claim 1, wherein the stretching ratio is in the range of 15 to 100 times in terms of area ratio.
14. A stretched multilayer film produced by a method claimed in claim 1.
15. The method for production of a stretched multilayer film according to claim 3, wherein the vinyl alcohol-based resin (A) is a saponified product of ethylene-vinyl acetate-based copolymer having ethylene structural unit of 20 to 60 mol %.
16. The method for production of a stretched multilayer film according to claim 5, wherein the stretching process is performed at a stretching temperature of 40 to 250\xb0 C. as a temperature of the multilayer structure, and the stretching temperature is lower than melting points both of the layer containing the (A) vinyl alcohol-based resin and the layer containing the (B) thermoplastic resin.
17. The method for production of a stretched multilayer film according to claim 5, wherein the melting point of the (C) adhesive resin is higher than the stretching temperature by 1 to 40\xb0 C.
18. The method for production of a stretched multilayer film according to claim 5, wherein the (C) adhesive resin is a carboxylic acid-modified polyolefin-based resin having a melting point higher than the stretching temperature of multilayer structure in a stretching process.
19. The method for production of a stretched multilayer film according to claim 16, wherein the melting point of the (C) adhesive resin is higher than the stretching temperature by 1 to 40\xb0 C.
20. The method for production of a stretched multilayer film according to claim 19, wherein the (C) adhesive resin is a carboxylic acid-modified polyolefin-based resin having a melting point higher than the stretching temperature of multilayer structure in a stretching process.