1. A method of producing an optical-fiber-arraying-member, comprising a process of forming a plurality of optical fiber fixing grooves in a surface of a base material of a flat plate shape; and
thereafter deforming said base material so that a surface of said base material becomes part of a side face of a cylinder and said optical fiber fixing grooves become an outer periphery of said base material.
2. A method of producing an optical-fiber-arraying-member, comprising a process of alternately repeating plural times a step of forming an optical fiber fixing groove with a stamp member having a groove-forming rib by pushing said groove-forming rib against a predetermined surface of a base material along a radial direction of a virtual circle and a step of rotating an extending direction of said groove-forming rib of said stamp member and said base material relative to each other by a predetermined angle about a center axis of said virtual circle, thereby radially forming a plurality of optical fiber fixing grooves in said base material.
3. The production method of the optical-fiber-arraying-member according to claim 2, wherein said base material is of a prism shape and said base material and said stamp member are rotated relative to each other about a center axis of the prism to determine a side face of said base material in which said optical fiber fixing grooves are to be formed.
4. The production method of the optical-fiber-arraying-member according to claim 2, wherein said base material is of a pyramid shape and said base material and said stamp member are rotated relative to each other about a center axis of the pyramid to determine a side face of said base material in which said optical fiber fixing grooves are to be formed.
5. A method of producing an optical-fiber-arraying-member, comprising a process of alternately repeating plural times a step of forming an optical fiber fixing groove with a stamp member having a groove-forming rib by pushing said groove-forming rib along a direction of a generator of a cylindrical side face of a base material, which has one of the cylindrical side face and part of the cylindrical side face as its own side face and a step of rotating said stamp member and said base material relative to each other by a predetermined angle about a center axis of said cylinder, thereby forming a plurality of optical fiber fixing grooves parallel to each other in the cylindrical side face of said base material.
6. A method of producing an optical-fiber-arraying-member, comprising a process of alternately repeating plural times a step of forming an optical fiber fixing groove with a stamp member having a groove-forming rib by pushing said groove-forming rib along a direction of a generator of a conical side face of a base material, which has one of the conical side face and part of the conical side face as its own side face and a step of rotating said stamp member and said base material relative to each other by a predetermined angle about a center axis of said cone, thereby forming a plurality of optical fiber fixing grooves in the conical side face of said base material,
side optical fibers to align the ends.
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 polyester resin for toner, comprising 5 to 30% by mass of a constitutional unit derived from isosorbide, wherein
a storage elastic modulus G\u2032 at 180\xb0 C. is within a range of 400 to 1,000 Pa.
2. The polyester resin for toner according to claim 1, which includes as constitutional unit derived from a tri- or higher polyhydric carboxylic acid.
3. The polyester resin for toner according to claim 2, which includes 5 to 25 parts by mol of the constitutional unit derived from a tri- or higher polyhydric carboxylic acid when the total content of the whole acid component in the polyester resin for toner is 100 parts by mol.
4. The polyester resin for toner according to claim 1, which includes 30% by mass or more of a constitutional unit derived from biomass.
5. The polyester resin for toner according to claim 1, which includes 9 to 25% by mass of the constitutional unit derived from isosorbide.
6. The polyester resin for toner according to claim 1, which includes a constitutional unit derived from 1,3-propanediol.
7. The polyester resin for toner according to claim 6, wherein the 1,3-propanediol is derived from biomass.
8. A method for producing a polyester resin for toner, which comprises polycondensing a mixture containing 5 to 30% by mass of isosorbide and a polyhydric carboxylic acid at 230\xb0 C. or lower, and completing a polycondensation reaction at a softening temperature within a range of 135 to 150\xb0 C.
9. The method for producing a polyester resin for toner according to claim 8, wherein the polyhydric carboxylic acid includes a tri- or higher polyhydric carboxylic acid.
10. The method for producing a polyester resin for toner according to claim 9, which includes 5 to 25 parts by mol of the tri- or higher polyhydric carboxylic acid when the total content of the whole acid component in the mixture is 100 parts by mol.
11. The method for producing a polyester resin for toner according to claim 8, wherein the mixture contains 30% by mass or more of a raw material derived from biomass.
12. The method for producing a polyester resin for toner according to claim 8, which contains 9 to 25% by mass of the isosorbide in the mixture.
13. The method for producing a polyester resin for toner according to claim 8, wherein the mixture contains 1,3-propanediol.
14. The method for producing a polyester resin for toner according to claim 8, wherein the mixture is polycondensed at 215\xb0 C. or higher.
15. A toner comprising the polyester resin for toner according to claim 1.