Patent US2498398A successfully refreshed from Google Patents.
Patent US3848988A successfully refreshed from Google Patents.
US3848988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moisture control device
Assignee: Xerox Corp
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Filing: 1973-06-11
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Granted: 1974-11-19
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Expires: 1993-06-11
Abstract
Abstract A thermodynamic system for use in a copier for removing excessive heat energy from a xerographic fusing station and discharging this energy into a support material supply area to control the moisture content contained therein. Further means are provided to augment the system during periods when the fuser is in a standby mode of operation or during periods when a low volume of copy is being produced.
Inventors
- 👤 R Thettu
- 👤 H Kocher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:15
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/65; G03G15/6502; G03G15/6508; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2064; G03G2215/00; G03G2215/00362; G03G2215/00367; G03G2215/00379; G03G2215/00383; G03G2215/00535; G03G2215/00666
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
115 words
In a copying machine having a supply station for storing final support material upon which copies are to be produced and a heat fusing station for fixing said copies, the improvement comprising an evaporator, containing a working substance, which vaporizes at a predetermined temperature, for removing heat energy from the fuser system, a condensor positioned in said support material supply station, being operatively connected in fluid flow communication with said evaporator means, for condensing said vapor of the working substance and discharging the latent energy into the supply region, and means associated with said condenser for providing energy to the working substance in said condenser when the rate of discharge falls below a predetermined level.
Claim 2
Dependent Claim
115 words
In a copying machine having a supply station for storing final support material upon which copies are to be produced and a heat fusing station for fixing said copies, the improvement comprising an evaporator, containing a working substance, which vaporizes at a predetermined temperature, for removing heat energy from the fuser system, a condensor positioned in said support material supply station, being operatively connected in fluid flow communication with said evaporator means, for condensing said vapor of the working substance and discharging the latent energy into the supply region, and means associated with said condenser for providing energy to the working substance in said condenser when the rate of discharge falls below a predetermined level.
Claim 3
Dependent Claim
62 words
The apparatus of claim 1 wherein said further means includes a sensor for detecting the temperature of the working fluid within said condenser, a heating means in thermal communication with said working substance contained within said condenser, and control means for actuating said heater means when said sensor detects that the temperature level in the working fluid falls below a predetermined level.
Claim 4
Dependent Claim
19 words
The apparatus of claim 1 further including means to return the condensate in said condenser back to the evaporator.
Claim 5
Dependent Claim
20 words
The apparatus of claim 3 wherein the vapors and condensate flow between the evaporator and condenser under natural flow conditions.
Claim 6
Dependent Claim
27 words
The apparatus of claim 3 wherien the means to return condensate to said evaporators has means to throttle the condensate prior to the condensates entering the evaporator.
Claim 7
Dependent Claim
14 words
The apparatus of claim 1 wherein the working substance vaporizes at about 210* F.
Claim 8
Dependent Claim
11 words
The apparatus of claim 6 wherein the working substance is water.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |