Patent US3854224A successfully refreshed from Google Patents.
US3854224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for heating and drying copy mediums
Assignee: Canon Inc
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Filing: 1973-06-11
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Granted: 1974-12-17
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Expires: 1993-06-11
Abstract
Abstract In a liquid development type copying machine, a device for heating and drying copy mediums comprises a heating-drying chamber in which copy mediums wet with developing liquid may be heated and dried. Pump means is provided for sucking air containing the developing liquid vapor produced in the heatingdrying chamber. Cooling-liquifying means is provided to cool and liquify the sucked air containing the developing liquid vapor. The developing liquid liquified by the cooling-liquifying means is collected in a collector. The cooled air provided by the cooling-liquifying means is blown through blow-out means toward the heating-drying chamber. The air is circulated by an air pump.
Inventors
- 👤 T Takahashi
- 👤 S Ohashi
- 👤 K Yamaji
- 👤 H Katayama
- 👤 Y Nishigaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:28
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/10; G03G15/11; G03G15/107
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
178 words
A device for heating and drying copy mediums in a liquid development type copying machine, comprising: a heating-drying chamber having an inlet and an outlet for receiving and discharging copy mediums, and including means for heating and drying copy mediums wet with developing liquid; suction means for sucking air containing developing liquid vapor produced in said heating-drying chamber and for reducing the pressure in said chamber below the ambient air pressure surrounding said machine wherein said suction means comprises a first suction portion for sucking the part of the developing liquid vapor containing air which is at a higher vapor pressure and a second suction portion for sucking the part of said air which is at a lower vapor pressure; cooling-liquifying means for cooling and liquifying the sucked air containing said developing liquid vapor; means for collecting the developing liquid liquified by said cooling-liquifying means; a passageway for circulating air between said heating-drying chamber and said cooling-liquifying means; and means for blowing the cooled air provided by said coolingliquifying means through said passageway and into said heatingdrying chamber.
Claim 2
Independent Claim
178 words
A device for heating and drying copy mediums in a liquid development type copying machine, comprising: a heating-drying chamber having an inlet and an outlet for receiving and discharging copy mediums, and including means for heating and drying copy mediums wet with developing liquid; suction means for sucking air containing developing liquid vapor produced in said heating-drying chamber and for reducing the pressure in said chamber below the ambient air pressure surrounding said machine wherein said suction means comprises a first suction portion for sucking the part of the developing liquid vapor containing air which is at a higher vapor pressure and a second suction portion for sucking the part of said air which is at a lower vapor pressure; cooling-liquifying means for cooling and liquifying the sucked air containing said developing liquid vapor; means for collecting the developing liquid liquified by said cooling-liquifying means; a passageway for circulating air between said heating-drying chamber and said cooling-liquifying means; and means for blowing the cooled air provided by said coolingliquifying means through said passageway and into said heatingdrying chamber.
Claim 3
Dependent Claim
35 words
A device according to claim 1, wherein said first suction portion is located in the upper portion of said heating-drying station, and said second suction portion is located in the lower portion of said station.
Claim 4
Dependent Claim
23 words
A device according to claim 1, wherein the cool air cooled by said cooling-liquifying means is used as coolant for said cooling-liquifying means.
Claim 5
Dependent Claim
43 words
A device according to claim 1, further comprising means for combining the cool air provided by said cooling-liquifying means and the developing liquid vapor containing air which is at a lower vapor pressure, and for blowing said combined air toward said heating-drying chamber.
Claim 6
Dependent Claim
14 words
A device according to claim 1, wherein said heating means includes a hot plate.
Claim 7
Dependent Claim
21 words
A device according to claim 1, wherein said cool air blown toward said heating-drying chamber is blown against a copy medium.
Claim 8
Dependent Claim
27 words
A device according to claim 5, wherein said heating-drying chamber further includes a roller provided to transport a copy medium in intimate contact with said hot plate.
Claim 9
Dependent Claim
26 words
A device according to claim 1, wherein said heating-drying chamber includes at least one pair of hot rollers for holding and transporting a copy medium therebetween.
Claim 10
Dependent Claim
24 words
A device according to claim 1, wherein said heating-drying chamber further includes developing liquid blotting rollers for holding and transporting a copy medium therebetween.
Claim 11
Dependent Claim
17 words
A device according to claim 9, wherein each of said blotting rollers has a heat source therein.
Claim 12
Independent Claim
135 words
A device for heating and drying copy mediums in a liquid development type copying machine, comprising: a heating-drying chamber having an inlet and an outlet for receiving and discharging coPy mediums, and including means for heating and drying copy mediums wet with developing liquid; suction means or sucking air containing developing liquid vapor produced in said heating-drying chamber; first and second cooling-liquifying means for cooling and liquifying the sucked air containing said developing liquid vapor; distribution means for distributing part of the cool air provided by said first cooling-liquifying means to said heating-drying chamber and for distributing the remainder of said cool air to said second cooling-liquifying means; means for exhausting the air cooled by said second cooling liquifying means; and means for collecting the developing liquid liquified by said first and second cooling-liquifying means.
Claim 13
Independent Claim
135 words
A device for heating and drying copy mediums in a liquid development type copying machine, comprising: a heating-drying chamber having an inlet and an outlet for receiving and discharging coPy mediums, and including means for heating and drying copy mediums wet with developing liquid; suction means or sucking air containing developing liquid vapor produced in said heating-drying chamber; first and second cooling-liquifying means for cooling and liquifying the sucked air containing said developing liquid vapor; distribution means for distributing part of the cool air provided by said first cooling-liquifying means to said heating-drying chamber and for distributing the remainder of said cool air to said second cooling-liquifying means; means for exhausting the air cooled by said second cooling liquifying means; and means for collecting the developing liquid liquified by said first and second cooling-liquifying means.
Claim 14
Dependent Claim
65 words
A device according to claim 11, wherein said distribution means includes a first air passageway for air discharged from said first cooling-liquifying means, second and third passageways connected to said first passageway at a branching portion for carrying air from said first passageway to said heating-cooling chamber and to said cooling-liquifying means, and an air flow-rate and distribution control plate disposed at said branching portion.
Claim 15
Dependent Claim
27 words
A device according to claim 11, wherein said second cooling-liquifying means has air exhaust means provided with an absorbing material for absorbing any residual developing liquid vapor.
Claim 16
Dependent Claim
34 words
A device according to claim 11, wherein said distribution means includes adjustment means for distributing said cool air to said heating-drying chamber and said second cooling-liquifying means at a ratio of 5:1 to 20:1.
Claim 17
Dependent Claim
13 words
A device according to claim 13, wherein said absorbing material is active carbon.
Claim 18
Dependent Claim
23 words
A device according to claim 11, wherein said heating-drying chamber is hermetically sealed except at the inlet and outlet thereof for copy medium.
Claim 19
Independent Claim
153 words
A device for heating and drying copy mediums in a liquid development type copying machine, comprising: a heat-drying chamber including means for heating and drying copy mediums wet with developing liquid; hermetically sealed receptacle means for receiving copy mediums heated and dried by said heating-drying chamber; first suction means for sucking air containing developing vapor produced in said heating-drying chamber; means for blowing preheated air into said receptacle means; second suction means for sucking developing liquid vapor produced from copy medium in said receptacle means; cooling-liquifying means coupled to said first and second suction means for cooling and liquifying the developing liquid vapor containing air sucked by said first and second suction means; means for collecting the developing liquid liquified by said cooling-liquifying means; means for blowing the cooled air from said cooling-liquifying means into said heating-drying chamber; and an air pump for circulating said air between said chamber and said cooling-liquifying means.
Claim 20
Independent Claim
153 words
A device for heating and drying copy mediums in a liquid development type copying machine, comprising: a heat-drying chamber including means for heating and drying copy mediums wet with developing liquid; hermetically sealed receptacle means for receiving copy mediums heated and dried by said heating-drying chamber; first suction means for sucking air containing developing vapor produced in said heating-drying chamber; means for blowing preheated air into said receptacle means; second suction means for sucking developing liquid vapor produced from copy medium in said receptacle means; cooling-liquifying means coupled to said first and second suction means for cooling and liquifying the developing liquid vapor containing air sucked by said first and second suction means; means for collecting the developing liquid liquified by said cooling-liquifying means; means for blowing the cooled air from said cooling-liquifying means into said heating-drying chamber; and an air pump for circulating said air between said chamber and said cooling-liquifying means.
Claim 21
Dependent Claim
19 words
A device according to claim 17, wherein said copy medium receptacle means is detachably mounted on said copying machine.
Claim 22
Dependent Claim
19 words
A device according to claim 17, wherein at least a portion of said copy medium receptacle means is transparent.
Claim 23
Dependent Claim
32 words
A device according to claim 17, wherein said hermetically sealed copy medium receptacle means is mounted on said copying machine and is connected to said second suction means in an airtight manner.
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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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |