US5155531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for decomposing ozone by using a solvent mist
Assignee: Ricoh Co Ltd
•
Filing: 1990-09-27
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Granted: 1992-10-13
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Expires: 2010-09-27
Abstract
Abstract An image formation apparatus including a latent electrostatic image formation unit for forming on a latent-electrostatic-image-bearable photoconductive member a latent electrostatic image corresponding to an original image; a development unit for developing the latent electrostatic image into a visible toner image with a developer; an image-transfer unit for transferring the visible toner image from the photoconductive member to a transfer sheet; an image-fixing unit for fixing the visible toner image to the transfer sheet, including an image fixing roller, the surface of which is coated with a release agent comprising a silicone oil; a solvent mist generation unit for generating a solvent mist; and an ozone decomposing unit for trapping and decomposing ozone generated in the image formation apparatus by mixing the ozone with the solvent mist.
Inventors
- 👤 Tsuneo Kurotori
- 👤 Manabu Mochizuki
- 👤 Ichiro Tsuruoka
- 👤 Katsuhiro Echigo
- 👤 Itsuo Ikeda
- 👤 Minoru Iwamoto
- 👤 Hiroshi Tanabe
- 👤 Mayumi Miyao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:14
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2064; G03G15/06; G03G15/10; G03G15/107; G03G21/00; G03G21/20; G03G21/206
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
85 words
An image formation apparatus comprising: a latent electrostatic image formation means for forming on a latent-electrostatic-image-bearable photoconductive member a latent electrostatic image; a development means for developing said latent electrostatic image into a visible toner image using a liquid developer; an ozone decomposing and discharging means for decomposing and discharging ozone generated in said image formation apparatus by mixing said ozone and a solvent mist of said liquid developer generated in said development means; and a solvent mist recovery means for recovering said solvent mist.
Claim 2
Dependent Claim
85 words
An image formation apparatus comprising: a latent electrostatic image formation means for forming on a latent-electrostatic-image-bearable photoconductive member a latent electrostatic image; a development means for developing said latent electrostatic image into a visible toner image using a liquid developer; an ozone decomposing and discharging means for decomposing and discharging ozone generated in said image formation apparatus by mixing said ozone and a solvent mist of said liquid developer generated in said development means; and a solvent mist recovery means for recovering said solvent mist.
Claim 3
Dependent Claim
18 words
The image formation apparatus as claimed in claim 1 wherein said solvent mist recovery means is a filter.
Claim 4
Dependent Claim
198 words
An image formation apparatus comprising: a latent electrostatic image formation means for forming on a latent-electrostatic-image bearable photoconductive member a latent electrostatic image; a development means for developing said latent electrostatic image into a visible toner image with a developer; an image transfer means for transferring said visible toner image from said photoconductive member to a transfer sheet; an image-fixing means for fixing said visible toner image to said transfer sheet, comprising an image fixing roller, the surface of which is coated with a release agent; an ozone decomposing and discharging means for decomposing and discharging ozone generated in said image formation apparatus by mixing a mist of said release agent generated in said image-fixing means and said ozone generated in said image formation apparatus and discharging said ozone; solvent mist generation means for generating a solvent mist, said solvent mist generation means comprising a solvent reservoir, from which said solvent mist is caused to evaporate; and an ozone concentration detection means for detecting the concentration of ozone generated in said image formation apparatus, the operation of said solvent mist generation means being controlled in accordance with the concentration of ozone detected by said ozone concentration detection means.
Claim 5
Dependent Claim
198 words
An image formation apparatus comprising: a latent electrostatic image formation means for forming on a latent-electrostatic-image bearable photoconductive member a latent electrostatic image; a development means for developing said latent electrostatic image into a visible toner image with a developer; an image transfer means for transferring said visible toner image from said photoconductive member to a transfer sheet; an image-fixing means for fixing said visible toner image to said transfer sheet, comprising an image fixing roller, the surface of which is coated with a release agent; an ozone decomposing and discharging means for decomposing and discharging ozone generated in said image formation apparatus by mixing a mist of said release agent generated in said image-fixing means and said ozone generated in said image formation apparatus and discharging said ozone; solvent mist generation means for generating a solvent mist, said solvent mist generation means comprising a solvent reservoir, from which said solvent mist is caused to evaporate; and an ozone concentration detection means for detecting the concentration of ozone generated in said image formation apparatus, the operation of said solvent mist generation means being controlled in accordance with the concentration of ozone detected by said ozone concentration detection means.
Claim 6
Dependent Claim
128 words
An image formation apparatus comprising: a latent electrostatic image formation means for forming on a latent-electrostatic-image-bearable photoconductive member a latent electrostatic image; a development means for developing said latent electrostatic image into a visible toner image with a developer; an image transfer means for transferring said visible toner image from said photoconductive member to a transfer sheet; an image-fixing means for fixing said visible toner image to said transfer sheet, comprising an image fixing roller; a solvent mist generation means for generating a solvent mist, which comprises a solvent reservoir equipped with a built-in heater, from which said solvent mist is caused to evaporate; and an ozone decomposing means for trapping and decomposing ozone generated in said image formation apparatus by mixing said ozone and said solvent mist.
Claim 7
Dependent Claim
128 words
An image formation apparatus comprising: a latent electrostatic image formation means for forming on a latent-electrostatic-image-bearable photoconductive member a latent electrostatic image; a development means for developing said latent electrostatic image into a visible toner image with a developer; an image transfer means for transferring said visible toner image from said photoconductive member to a transfer sheet; an image-fixing means for fixing said visible toner image to said transfer sheet, comprising an image fixing roller; a solvent mist generation means for generating a solvent mist, which comprises a solvent reservoir equipped with a built-in heater, from which said solvent mist is caused to evaporate; and an ozone decomposing means for trapping and decomposing ozone generated in said image formation apparatus by mixing said ozone and said solvent mist.
Claim 8
Dependent Claim
28 words
The image formation apparatus as claimed in claim 4, further comprising an ozone concentration detection means for detecting the concentration of ozone generated in said image formation apparatus.
Claim 9
Dependent Claim
52 words
The image formation apparatus as claimed in claim 4, further comprising an ozone concentration detection means for detecting the concentration of ozone generated in said image formation apparatus, and wherein said built-in heater is turned ON or OFF, in accordance with the concentration of ozone detected by said ozone concentration detection means.
Claim 10
Dependent Claim
31 words
The image formation apparatus as claimed in claim 4, wherein said solvent mist generation means further comprises a shutter for controlling the amount of said solvent mist from said solvent reservoir.
Claim 11
Dependent Claim
69 words
The image formation apparatus as claimed in claim 7, further comprising an ozone concentration detection means for detecting the concentration of ozone generated in said image formation apparatus, and wherein said built-in heater is turned ON or OFF, in accordance with the concentration of ozone detected by said ozone concentration detection means and said shutter is opened or closed in collaboration with ON or OFF of said built-in heater.
Claim 12
Dependent Claim
42 words
The image formation apparatus as claimed in claim 4, further comprising an ozone concentration detection means for detecting the concentration of ozone generated in said image formation apparatus and a suction fan for discharging said solvent mist outside said image formation apparatus.
Claim 13
Dependent Claim
28 words
The image formation apparatus as claimed in claim 9, wherein said suction fan is operated in accordance with the concentration of ozone detected by said ozone detection means.
Claim 14
Dependent Claim
137 words
An image formation apparatus comprising: a latent electrostatic image formation means for forming on a latent-electrostatic-image-bearable photoconductive member a latent electrostatic image; a development means using a liquid developer for developing said latent electrostatic image into a visible toner image with a liquid developer; an image transfer means for transferring said visible toner image from said photoconductive member to a transfer sheet; an image-fixing means for fixing said visible toner image to said transfer sheet, comprising an image fixing roller; a solvent mist generation means for generating a solvent mist; an ozone decomposing means for trapping and decomposing ozone generated in said image formation apparatus by mixing said ozone and said solvent mist; and a means for counting the number of copies made, said ozone decomposing means being operated in accordance with the number of copies counted.
Claim 15
Dependent Claim
137 words
An image formation apparatus comprising: a latent electrostatic image formation means for forming on a latent-electrostatic-image-bearable photoconductive member a latent electrostatic image; a development means using a liquid developer for developing said latent electrostatic image into a visible toner image with a liquid developer; an image transfer means for transferring said visible toner image from said photoconductive member to a transfer sheet; an image-fixing means for fixing said visible toner image to said transfer sheet, comprising an image fixing roller; a solvent mist generation means for generating a solvent mist; an ozone decomposing means for trapping and decomposing ozone generated in said image formation apparatus by mixing said ozone and said solvent mist; and a means for counting the number of copies made, said ozone decomposing means being operated in accordance with the number of copies counted.
Claim 16
Dependent Claim
140 words
An image formation apparatus comprising: a latent electrostatic image formation means for forming on a latent-electrostatic-image-bearable photoconductive member a latent electrostatic image; a development means using a liquid developer for developing said latent electrostatic image into a visible toner image with a liquid developer; an image transfer means for transferring said visible toner image from said photoconductive member to a transfer sheet; an image-fixing means for fixing said visible toner image to said transfer sheet, comprising an image fixing roller; a solvent mist generation means for generating a solvent mist; an ozone decomposing means for trapping and decomposing ozone generated in said image formation apparatus by mixing said ozone and said solvent mist; and a means for measuring the timer period of continuous copy making, said ozone decomposing means being operated in accordance with the measured copy making time period.
Claim 17
Dependent Claim
140 words
An image formation apparatus comprising: a latent electrostatic image formation means for forming on a latent-electrostatic-image-bearable photoconductive member a latent electrostatic image; a development means using a liquid developer for developing said latent electrostatic image into a visible toner image with a liquid developer; an image transfer means for transferring said visible toner image from said photoconductive member to a transfer sheet; an image-fixing means for fixing said visible toner image to said transfer sheet, comprising an image fixing roller; a solvent mist generation means for generating a solvent mist; an ozone decomposing means for trapping and decomposing ozone generated in said image formation apparatus by mixing said ozone and said solvent mist; and a means for measuring the timer period of continuous copy making, said ozone decomposing means being operated in accordance with the measured copy making time period.
Claim 18
Dependent Claim
48 words
The image formation apparatus as claimed in claim 12, wherein said ozone and solvent mist trapping means is operated for different periods including at least three different periods, with the first period being different from the second period, and the second period being different from the third period.
Claim 19
Dependent Claim
138 words
An image formation apparatus comprising: a latent electrostatic image formation means for forming on a latent-electrostatic-image bearable photoconductive member a latent electrostatic image; a development means for developing said latent electrostatic image into a visible toner image with a developer; an image transfer means for transferring said visible toner image from said photoconductive member to a transfer sheet; an image-fixing means for fixing said visible toner image to said transfer sheet, comprising an image fixing roller, the surface of which is coated with a release agent; an ozone decomposing and discharging means for decomposing and discharging ozone generated in said image formation apparatus by mixing a mist of said release agent generated in said image-fixing means and said ozone generated in said image formation apparatus and discharging said ozone; and a mist recovery means for recovering said mist.
Claim 20
Dependent Claim
138 words
An image formation apparatus comprising: a latent electrostatic image formation means for forming on a latent-electrostatic-image bearable photoconductive member a latent electrostatic image; a development means for developing said latent electrostatic image into a visible toner image with a developer; an image transfer means for transferring said visible toner image from said photoconductive member to a transfer sheet; an image-fixing means for fixing said visible toner image to said transfer sheet, comprising an image fixing roller, the surface of which is coated with a release agent; an ozone decomposing and discharging means for decomposing and discharging ozone generated in said image formation apparatus by mixing a mist of said release agent generated in said image-fixing means and said ozone generated in said image formation apparatus and discharging said ozone; and a mist recovery means for recovering said mist.
Claim 21
Dependent Claim
17 words
The image formation apparatus as claimed in claim 14, wherein said mist recovery means is a filter.
Claim 22
Dependent Claim
82 words
An image formation apparatus for implementing at least an image formation process of forming a latent electrostatic image on a photoconductor and developing said latent electrostatic image to a visible image, using a liquid at least in one step of said process, comprising: an ozone decomposing and discharging means for decomposing ozone generated in said image formation apparatus and discharging the same therefrom by mixing a mist of said liquid and said ozone; and a mist recovery means for recovering said mist.
Claim 23
Dependent Claim
82 words
An image formation apparatus for implementing at least an image formation process of forming a latent electrostatic image on a photoconductor and developing said latent electrostatic image to a visible image, using a liquid at least in one step of said process, comprising: an ozone decomposing and discharging means for decomposing ozone generated in said image formation apparatus and discharging the same therefrom by mixing a mist of said liquid and said ozone; and a mist recovery means for recovering said mist.
Claim 24
Dependent Claim
17 words
The image formation apparatus as claimed in claim 16, wherein said mist recovery means is a filter.
References Cited (Backward Citations)
US3854224A
Cited
US3914046A
Cited
US4178092A
Cited
JPS5380238A
Cited
US4401385A
Cited
US4549803A
Cited
US4540268A
Cited
US4607936A
Cited
US4805001A
Cited
JPS63109484A
Cited
US4853735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-10-13 | 1996-04-13 | 1996-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-13 | 2000-04-13 | 2000-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-13 | 2004-04-13 | 2004-10-13 | $7700.00 | Window Closed / Lapsed |