1. An image heating apparatus, comprising:
first image heating means for heating a toner image on a recording material;
second image heating means for heating the toner image on the recording material heated by the first image heating means; and
detecting means for detecting a temperature of the first image heating means,
wherein the image heating apparatus is operable to a correcting mode in which a temperature of the second image heating means is corrected in accordance with a detected temperature of the first image heating means.
2. An image heating apparatus according to claim 1, wherein in the correcting mode, the temperature of the second image heating means is corrected so that glossiness of the image on the recording material subjected to a heating processing by the first image heating means and the second image heating means falls within a predetermined range.
3. An image heating apparatus according to claim 1, wherein in the correcting mode, when the temperature of the first image heating means rises, the temperature of the second image heating means is reduced, while when the temperature of the first image heating means drops, the temperature of the second image heating means is raised.
4. An image heating apparatus according to claim 1, wherein the image heating apparatus is operable to a normal mode in which a temperature control for the first image heating means and a temperature control for the second image heating means are carried out independently of each other.
5. An image heating apparatus according to claim 4, further comprising switching means for switching between the correcting mode and the normal mode in accordance with the detected temperature of the first image heating means.
6. An image heating apparatus according to claim 1, wherein
the second image heating means includes a pressure member and a heating member for heating the image on the recording material in a nip portion,
the second image heating means includes an external heating member for heating the heating member from an outside, and
in the correcting mode, a heating operation of the external heating member is corrected in accordance with the detected temperature of the first image heating means.
7. A fixing apparatus, comprising:
first fixing means for heat-fixing a toner image on a recording material;
second fixing means for heat-fixing the toner image on the recording material heated by the first fixing means;
detecting means for detecting a temperature of the first fixing means; and
correcting means for correcting a temperature of the second fixing means in accordance with a detected temperature of the first fixing means.
8. A fixing apparatus according to claim 7, wherein said correcting means corrects the temperature of the second fixing means so that glossiness of the image on the recording material subjected to a fixing processing by the first fixing means and the second fixing means falls within a predetermined range.
9. A fixing apparatus according to claim 7, wherein when the temperature of the first fixing means rises, the temperature of the second fixing means is reduced by said correcting means, while when the temperature of the first fixing means drops, the temperature of the second fixing means is raised by said correcting means.
10. A fixing apparatus according to claim 7, wherein the fixing apparatus is operable to a normal mode in which a temperature control for the first fixing means and a temperature control for the second fixing means are carried out independently of each other.
11. A fixing apparatus according to claim 10, further comprising switching means for switching between a correcting mode in which the temperature of the second fixing means is corrected by said correcting means and the normal mode in accordance with the detected temperature of the first fixing means.
12. A fixing apparatus according to claim 7, wherein
the second fixing means includes a pressure member and a fixing member for fixing the image on the recording material in a nip portion,
the second heating means includes an external heating member for heating the fixing member from an outside, and
wherein said correcting means corrects a heating operation of the external heating member in accordance with the detected temperature of the first fixing means.
13. An image heating apparatus, comprising:
first image heating means for heating a toner image on a recording material;
first heating means for carrying out heating so that the first image heating means maintains a target temperature;
second image heating means for heating the toner image on the recording material heated by the first image heating means;
second heating means for carrying out heating so that the second image heating means maintains a target temperature; and
correcting means for correcting the target temperature of the second image heating means in accordance with a temperature of the first image heating means.
14. An image heating apparatus according to claim 13, wherein the correcting means corrects the target temperature of the second image heating means so that glossiness of the image on the recording material subjected to a heating processing by the first image heating means and the second image heating means falls within a predetermined range.
15. An image heating apparatus according to claim 13, wherein when the temperature of the first image heating means rises, the correcting means reduces the target temperature of the second image heating means, while when the temperature of the first image heating means drops, the correcting means raises the target temperature of the second image heating means.
16. An image heating apparatus according to claim 13, further comprising setting means for setting the target temperature of the first image heating means and the target temperature of the second image heating means in accordance with a kind of the recording material.
17. A fixing apparatus, comprising:
first fixing means for heat-fixing a toner image on a recording material;
first heating means for heating said first fixing means so that a temperature of the first fixing means maintains a target temperature;
second fixing means for heat-fixing the toner image on the recording material heated by the first fixing means;
second heating means for heating the second fixing means so that a temperature of the second fixing means maintains a target temperature; and
correcting means for correcting the target temperature of the second fixing means in accordance with temperature fluctuation of the first fixing means.
18. A fixing apparatus according to claim 17, wherein the correcting means corrects the target temperature of the second fixing means so that glossiness of the image on the recording material subjected to a fixing processing by the first fixing means and the second fixing means falls within a predetermined range.
19. A fixing apparatus according to claim 17, wherein
when the temperature of the first fixing means rises, the correcting means reduces the target temperature of the second fixing means, and
when the temperature of the first fixing means drops, the correcting means raises the target temperature of the second fixing means.
20. A fixing apparatus according to claim 17, further comprising setting means for setting the target temperature of the first fixing means and the target temperature of the second fixing means in accordance with a kind of the recording material.
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 speaker system comprising:
first, second and third sound radiators, each sound radiator mounted in a respective enclosure; the second sound radiator radiating at high audio frequencies and positioned medially between the first and third sound radiators, only the respective enclosure of the second sound radiator having a reflective surface (reflectively dispersive shape) and having a height no greater than the height of the respective first and third radiator enclosures; the first and third sound radiators radiating at low to mid audio frequencies and tilted generally toward each other; the sound radiators projecting first, second and third sound vectors, respectively, with the second sound vector oriented vertically and the first and third sound vectors directed generally toward each other al angles above the horizontal so as to intersect at an inclusive angle of between 90 and 170 degrees; the first and third sound radiators spaced horizontally apart by at least a horizontal width of the second sound radiator, the first, second and third sound radiators providing wide dispersion of sound produced by the first and third sound radiators.
2. The system of claim 1 wherein the enclosure of the second sound radiator has an upwardly directed, semispherical surface, the semispherical surface symmetrical with respect to the second sound vector, the semispherical surface terminating upwardly above dispersion angles of the first and third sound radiators such that a portion of the sound radiated from the first and third sound radiators is reflected from the semispherical surface.
3. The system of claim 1 wherein the reflective surface is positioned above a pleated surface to further disperse the radiated sound from the first and third radiators, the pleated surface comprising a circular array of vertically oriented pleats wherein each pleat has a pair of surfaces meeting at an angle, a horizontal intersection of the reflective surface and the pleated surface positioned below dispersion angles of the pair of radiators, such that spurious portions of the sound radiated from the first and third radiators is diffused by the pleated surface.
4. A speaker system comprising; first, second and third sound radiators, the sound radiators mounted in respective first, second and third mutually spaced apart sound enclosures; the second sound enclosure positioned medially between the first and third sound enclosures, the first, second and third sound radiators projecting first, second and third sound vectors, respectively, with the second sound vector oriented vertically and the first and third sound vectors directed generally toward each other at angles above the horizontal; only the second sound enclosure having an upwardly facing semispherical convex reflective surface terminating upwardly above dispersion angles of the first and third sound radiators such that a portion of sound radiated from each of the first and third sound radiators is reflected from the reflective surface; the second sound vector directed away from the reflective surface.