1. A composition for resin-bonded magnets, comprising a magnetic powder (A) and resin binder (B), the former containing a transition metal element as one of the constituent elements,
wherein the binder (B) comprises, as the major ingredient, a thermosetting resin (B-1) containing an organic peroxide(B-2) and having radical-polymerization reactivity, and is further incorporated with an N-oxyl compound (C), wherein the N-oxyl compound (C) is incorporated at 0.1 to 10 part by weight per 100 parts by weight of the thermosetting resin (B-1) having radical-polymerization reactivity.
2. The composition for resin-bonded magnets according to claim 1, wherein said magnetic powder (A) has an anisotropic magnetic field of 50 kOe or more.
3. The composition for resin-bonded magnets according to claim 1 or 2, wherein said magnet powder (A) contains the magnetic particles having a size of 100 \u03bcm or less at 50% by weight or more, based on the whole magnetic powder.
4. The composition for resin-bonded magnets according to claim 1 or 2, wherein said organic peroxide (B-2) has a function of being curable at 150\xb0 C. or lower.
5. The composition for resin-bonded magnets according to claim 1 or 2, wherein said organic peroxide (B-2) is selected from the group consisting of dialkyl-based compounds and peroxyketal-based compounds.
6. The composition for resin-bonded magnets according to claim 1 or 2, wherein said thermosetting resin (B-1) having radical-polymerization reactivity is liquid at 150\xb0 C. or lower.
7. The composition for resin-bonded magnets according to one of claim 1 or 2, wherein said N-oxyl compound (C) has, at the terminal of the molecular chain, at least one structure type represented by one of the following general formula (1):
(wherein, X1 and X2 are each hydrogen atom, or \u2014OR5, \u2014OCOR6 or \u2014NR7R8 group; R1, R2, R3 and R4 are each an alkyl group of 1 or more carbon atoms; and R5, R6, R7 and R8 are each hydrogen atom or an alkyl group of 1 to 16 carbon atoms), and general formula (2):
(wherein, X3, X4 and X5 are each hydrogen atom, or \u2014OR13, \u2014OCOR14 or \u2014NR15R16 group; R9, R10, R11 and R12 are each an alkyl group of 1 or more carbon atoms; and R13, R14, R15 and R16 are each hydrogen atom or an alkyl group of 1 to 16 carbon atoms).
8. The composition for resin-bonded magnets according to claim 1 or 2, wherein said thermosetting resin (B-1) having radical-polymerization reactivity is at least one type of resin selected from the group consisting of vinyl ester, urethane (meth)acrylate, unsaturated polyester and polyester (meth)acrylate resin.
9. The composition for resin-bonded magnets according to claim 1 or 2, which is serviceable for 120 hours or more at 30\xb0 C. under closed, stationary conditions.
10. A resin-bonded magnet produced by forming the composition according to claim 1 or 2 for resin-bonded magnets by at least one method selected from the group consisting of injection molding, extrusion, injection compression, injection pressing and transfer molding.
11. A composition for use in a resin-bonded magnet, comprising:
a magnetic powder containing a transition metal; and
a resin binder, comprising:
an unsaturated polyester resin;
an organic peroxide; and
an N-oxyl compound, wherein the N-oxyl compound is incorporated at 0.1 to 10 parts by weight per 100 parts by weight of the unsaturated polyester resin.
12. The composition for resin-bonded magnets according to claim 11, wherein the composition has a service life of 120 hours or more at a temperature of 30\xb0 C. under a closed and stationary condition.
13. A composition for use in a resin-bonded magnet, comprising:
a magnetic powder containing a transition metal; and
a resin binder, comprising:
a thermosetting resin;
an organic peroxide; and
an N-oxyl compound,
wherein the composition has a service life of 120 hours or more at a temperature of 30\xb0 C. under a closed and stationary condition.
14. The composition for resin-bonded magnets according to claim 13, wherein said N-oxyl compound (C) is incorporated at 0.1 to 10 parts by weight per 100 parts by weight of the thermosetting resin.
15. The composition for resin-bonded magnets according to claim 13, wherein said thermosetting resin having a radical-polymerization reactivity is at least one type of resin selected from the group consisting of vinyl ester and unsaturated polyester.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A digital camera having an image capturing mode for executing a process regarding image capturing and another mode, comprising:
a focusing lens for capturing an image;
an operation member for accepting an operation for driving said focusing lens;
a detector for detecting an operation by said operation member; and
a controller for entering said image capturing mode when an operation by said operation member is detected by said detector in said another mode.
2. The digital camera according to claim 1, wherein
said operation member is a focus ring.
3. The digital camera according to claim 1, wherein
said operation member is a member for switching focusing between autofocusing for automatically driving said focusing lens and manual focusing for manually driving said focusing lens.
4. A digital camera having an image capturing mode for executing a process regarding image capturing and another mode, comprising:
a zoom lens for capturing an image;
an operation member for accepting an operation for driving said zoom lens;
a detector for detecting an operation by said operation member; and
a controller for entering said image capturing mode when an operation by said operation member is detected by said detector in said another mode.
5. A digital camera having an image capturing mode for executing a process regarding image capturing and another mode, comprising:
a diaphragm used for capturing an image;
an operation member for accepting an operation for driving said diaphragm;
a detector for detecting an operation by said operation member; and
a controller for entering said image capturing mode when an operation by said operation member is detected by said detector in said another mode.
6. A digital camera having an image capturing mode for executing a process regarding image capturing and another mode, comprising:
an image capturing device;
an operation member for setting an exposure time of said image capturing device;
a detector for detecting an operation by said operation member; and
a controller for entering said image capturing mode when an operation by said operation member is detected by said detector in said another mode.
7. A digital camera having an image capturing mode for executing a process regarding image capturing and another mode, comprising:
an image capturing device;
an adjuster for adjusting a gain of an output from said image capturing device;
an operation member for setting said gain;
a detector for detecting an operation by said operation member; and
a controller for entering said image capturing mode when an operation by said operation member is detected by said detector in said another mode.
8. A digital camera having an image capturing mode for executing a process regarding image capturing and another mode, comprising:
an image capturing device;
an adjuster for adjusting white balance of an output from said image capturing device;
an operation member for accepting an operation regarding said white balance;
a detector for detecting an operation by said operation member; and
a controller for entering said image capturing mode when an operation by said operation member is detected by said detector in said another mode.
9. A digital camera having an image capturing mode for executing a process regarding image capturing and another mode, comprising:
a flash for illuminating a subject;
an operation member for accepting an operation regarding said flash;
a detector for detecting an operation by said operation member; and
a controller for entering said image capturing mode when an operation by said operation member is detected by said detector in said another mode.
10. The digital camera according to claim 9, wherein
said operation member is a switch for switching a light emission mode of said flash.
11. The digital camera according to claim 9, wherein
said flash is movable between a position protruded from a camera body and a position in which said flash is housed in said camera body.
12. A digital camera having an image capturing mode for executing a process regarding image capturing and another mode, comprising:
a recorder for recording sound so as to be associated with an image captured;
an operation member for accepting an operation regarding said recorder;
a detector for detecting an operation by said operation member; and
a controller for entering said image capturing mode when an operation by said operation member is detected by said detector in said another mode.
13. A digital camera having an image capturing mode for executing a process regarding image capturing and another mode, comprising:
a finder for checking an image capturing range;
a detector for detecting that a user peeps through said finder; and
a controller for entering said image capturing mode when it is detected by said detector that said user peeps through said finder in said another mode.
14. A digital camera having an image capturing mode for executing a process regarding image capturing and another mode, comprising:
an operation member for accepting an operation regarding image capturing with a self-timer;
a detector for detecting an operation by said operation member; and
a controller for entering said image capturing mode when an operation by said operation member is detected by said detector in said another mode.
15. A digital camera having an image capturing mode for executing a process regarding image capturing and another mode, comprising:
an operation member for selecting a predetermined program from a plurality of programs for performing an image capturing operation under a plurality of different capturing conditions;
a detector for detecting an operation by said operation member; and
a controller for entering said image capturing mode when an operation by said operation member is detected by said detector in said another mode.
16. A digital camera having an image capturing mode for executing a process regarding image capturing and another mode, comprising:
a plurality of displays each capable of displaying an image;
an operation member for selecting a display to be used from said plurality of displays;
a detector for detecting an operation by said operation member; and
a controller for entering said image capturing mode when an operation by said operation member is detected by said detector in said another mode.
17. A digital camera according to claim 16, wherein
said plurality of displays are a liquid crystal display and an electronic view finder having an ocular.
18. A digital camera having an image capturing mode for executing a process regarding image capturing and another mode, comprising:
a shutter button for instructing start of capturing an image;
a detector for detecting an operation of said shutter button; and
a controller for entering said image capturing mode when an operation by said operation member is detected by said detector in said another mode.
19. The digital camera according to claim 18, wherein
said controller executes a process of image capturing subsequent to entering said image capturing mode.
20. A digital camera having an image capturing mode for executing a process regarding image capturing and another mode, comprising:
an attaching part for attaching a recording medium;
a first detector for detecting attachment of a recording medium to said attaching part;
a second detector for detecting whether a recording medium attached to said attaching part is recordable or not; and
a controller for entering said image capturing mode when it is detected by said first and second detectors that a recordable recording medium is attached to said attaching part in said another mode.
21. A digital camera having an image capturing mode for executing a process regarding image capturing and another mode, comprising:
an attaching part for attaching a recording medium;
a detector for detecting a program for image capturing stored in a recording medium attached to said attaching part; and
a controller for entering said image capturing mode when a program for image capturing is detected by said detector in said another mode.
22. A digital camera having a reproduction mode for executing a process regarding reproduction of a captured image and another mode, comprising:
a lens for image capturing;
a detector for detecting that a lens protect member is attached to said lens for image capturing; and
a controller for entering said reproduction mode when it is detected by said detector that said lens protect member is attached in said another mode.
23. A digital camera having a reproduction mode for executing a process regarding reproduction of a captured image and another mode, comprising:
a display capable of displaying an image;
an operation member for accepting an operation regarding a process of displaying a captured image to be displayed on said display;
a detector for detecting an operation by said operation member; and
a controller for entering said reproduction mode when an operation by said operation member is detected by said detector in said another mode.
24. The digital camera according to claim 23, wherein
said operation member is a member for instructing display of a thumbnail image.
25. The digital camera according to claim 23, wherein said operation member is a member for instructing displaying an image of one frame.
26. The digital camera according to claim 23, wherein
said operation member is a member for instructing an image process on a captured image.
27. The digital camera according to claim 23, wherein
said operation member is a member for switching an image to be displayed.
28. A digital camera having a reproduction mode for executing a process regarding reproduction of a captured image and another mode, comprising:
a reproducer for reproducing sound data recorded in association with a captured image;
an operation member for accepting an operation regarding reproduction of said sound data;
a detector for detecting an operation by said operation member; and
a controller for entering said reproduction mode when an operation by said operation member is detected by said detector in said another mode.
29. A digital camera having a reproduction mode for executing a process regarding reproduction of a captured image and another mode, comprising:
an attaching part for attaching a recording medium;
a first detector for detecting attachment of a recording medium to said attaching part;
a second detector for detecting whether a recording medium attached to said attaching part is write protected or not; and
a controller for entering said reproduction mode when it is detected by said first and second detectors that a write protected recording medium is attached to said attaching part in said another mode.
30. A digital camera having a reproduction mode for executing a process regarding reproduction of a captured image and another mode, comprising:
an attaching part for attaching a recording medium;
a detector for detecting a program for reproduction stored in a recording medium attached to said attaching part; and
a controller for entering said reproduction mode when a program for reproduction is detected by said detector in said another mode.
31. A digital camera having an image capturing mode for executing a process regarding image capturing and a reproduction mode for executing a process regarding reproduction of a captured image, comprising:
a plurality of operation members for image capturing used only in said image capturing mode;
a plurality of operation members for reproduction used only in said reproduction mode;
a first face on which only said operation members for image capturing are provided; and
a second face, different from said first face, on which only said operation members for reproduction are provided.
32. The digital camera according to claim 31, wherein
said operation members for image capturing are disposed around a lens.
33. The digital camera according to claim 31, wherein
said operation members for image capturing are disposed on a top face of a camera body.
34. The digital camera according to claim 31, wherein
said operation members for reproduction are disposed on a rear face of a camera body.
35. The digital camera according to claim 31, further comprising
a switching member for switching a mode between said image capturing mode and said reproduction mode, said switching member being disposed on a third face different from said first and second faces.
36. The digital camera according to claim 35, wherein
said third face is provided between said first and second faces.
37. The digital camera according to claim 35, wherein
said third face is inclined toward said first and second faces.