Recording medium

Abstract

A recording medium comprising a magnetic material inside, and having a Taber abrasion amount of 10 mg or less. Also provided is a recording medium comprising a magnetic material inside, and having, in an environment of 23° C. and 50% RH, a surface electroresistivity of 1×109 Ω/sq to 2×1011 Ω/sq and a volume electroresistivity of 1×1010 Ωcm to 2×1012 Ωcm.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Exemplary embodiments of the present invention will be described in detail based on the following figures, wherein:

FIG. 1 is a schematic diagram illustrating an example of an image forming apparatus in which a recording medium according to an aspect of the present invention can be used;

FIGS. 2A and 2B are explanatory drawings illustrating the state at which a Taber abrasion amount is measured; and

FIGS. 3A to 3C are explanatory drawings illustrating the large Barkhausen effect.

Claims

1. A recording medium comprising a magnetic material inside, and having a Taber abrasion amount of about 10 mg or less.

2. The recording medium of claim 1, wherein an internal bond strength of the recording medium is about 0.1 N·m or more.

3. The recording medium of claim 1, wherein the magnetic material exhibits at least a large Barkhausen effect.

4. The recording medium of claim 3, wherein the magnetic material is in the shape of a wire having a diameter of about 10 μm or more.

5. The recording medium of claim 4, wherein a length of the magnetic material is from about 5 mm to about 430 mm.

6. The recording medium of claim 4, wherein the diameter of the magnetic material is about 40 μm or less.

7. The recording medium of claim 4, wherein the diameter of the magnetic material is about 30 μm or less.

8. The recording medium of claim 1, wherein an amount of a filler relative to a solid content of a body of the recording medium is about 10% by mass or less.

9. The recording medium of claim 1, further comprising a surface layer with a dry mass of about 0.8 to 3.0 g/m2 containing a polyvinyl alcohol having a saponification degree of about 90 mol % or more, a modified polyvinyl alcohol, a styrene-anhydrous maleic acid copolymer, a vinyl chloride-vinyl acetate copolymer, a styrene-butadiene copolymer, or a polyacrylic acid ester.

10. A recording medium comprising a magnetic material inside, and having, in an environment of 23° C. and 50% RH, a surface electroresistivity of about 1×109 Ω/sq to 2×1011 Ω/sq and a volume electroresistivity of about 1×1010 Ωcm to 2×1012 Ωcm.

11. The recording medium of claim 10, wherein an average value RAVE of the surface electroresistivity over the entire surface region of a body of the recording medium, and a surface electroresistivity R1 of a surface of a region of the body of the recording medium that contains the magnetic material have a relationship expressed by the following formula (1): |Log (R1)−Log (RAVE)|≦1   Formula (1)

12. The recording medium of claim 10, wherein a conditioning moisture content in an environment of 23° C. and 50% RH is from about 5.5% to about 7.5%.

13. The recording medium of claim 10, wherein the magnetic material exhibits at least a large Barkhausen effect.

14. The recording medium of claim 10, wherein the magnetic material is sandwiched between a pair of substrate sheets.

15. The recording medium of claim 10, wherein the recording medium is produced by papermaking from paper stock and the magnetic material.

16. The recording medium of claim 13, wherein the magnetic material is in the shape of a wire having a diameter of about 10 μm or more.

17. The recording medium of claim 16, wherein a length of the magnetic material is from about 5 mm to about 430 mm.

18. The recording medium of claim 16, wherein the diameter of the magnetic material is about 60 μm or less.

19. The recording medium of claim 16, wherein the diameter of the magnetic material is about 50 μm or less.