US4003069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing a developer medium for diazotype materials
Assignee: Hoechst AG
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Filing: 1974-12-16
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Granted: 1977-01-11
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Expires: 1994-12-16
Abstract
Abstract An apparatus for producing a gaseous developer medium for a diazotype material from a developer solution, which apparatus comprises a vessel provided with a heater and an outlet for residual liquid, for generating a stream of vapor from a liquid, A conduit in which a stream of developer solution flowing in one general direction can come into contact with a stream of vapor flowing in the other general direction, which conduit communicates at one end with the vessel and is provided at, or in the vicinity of, the other end with an inlet for the developer solution, A condenser which communicates with the end of the conduit remote from the vessel, the condenser having an outlet for gaseous developer medium and an outlet for condensed developer medium, And a vaporizing vessel adapted to be located in a developing chamber for diazotype materials, which vaporizing vessel communicates with the outlet for condensed developer medium. The invention also relates to a process for developing diazotype material using the apparatus of the invention.
Inventors
- 👤 Horst Hilgers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:51
CPC Classifications
G; G03; G03D; G03D7/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
158 words
An apparatus for producing a gaseous developer medium for a diazotype material from a developer solution, which apparatus comprises a vessel means, provided with a heater and an outlet for residual liquid, for generating a stream of vapor from a liquid, conduit means in which a stream of developer solution flowing in one general direction can come into contact with a stream of vapor flowing in the other general direction, which conduit means communicates at one end with the vessel and is provided at, or in the vicinity of, the other end with an inlet for the developer solution, condenser means which communicates with the end of the conduit remote from the vessel, the condenser means having an outlet for gaseous developer medium and an outlet for condensed developer medium, and a vaporizing vessel means adapted to be located in a developing chamber for diazotype materials, which vaporizing vessel means communicates with the outlet for condensed developer medium.
Claim 2
Independent Claim
158 words
An apparatus for producing a gaseous developer medium for a diazotype material from a developer solution, which apparatus comprises a vessel means, provided with a heater and an outlet for residual liquid, for generating a stream of vapor from a liquid, conduit means in which a stream of developer solution flowing in one general direction can come into contact with a stream of vapor flowing in the other general direction, which conduit means communicates at one end with the vessel and is provided at, or in the vicinity of, the other end with an inlet for the developer solution, condenser means which communicates with the end of the conduit remote from the vessel, the condenser means having an outlet for gaseous developer medium and an outlet for condensed developer medium, and a vaporizing vessel means adapted to be located in a developing chamber for diazotype materials, which vaporizing vessel means communicates with the outlet for condensed developer medium.
Claim 3
Dependent Claim
20 words
An apparatus as claimed in claim 1 wherein the conduit means comprises a column in which spaced plates are fixed.
Claim 4
Dependent Claim
17 words
An apparatus as claimed in claim 1 wherein the conduit means includes a column filled with packings.
Claim 5
Dependent Claim
20 words
An apparatus as claimed in claim 1 wherein the conduit means comprises a column in the form of a coil.
Claim 6
Dependent Claim
25 words
An apparatus as claimed in claim 1 including an inlet for introducing into the conduit means any developer medium which condenses in the developing chamber.
Claim 7
Dependent Claim
19 words
An apparatus as claimed in claim 1 wherein the outlet of the vessel for residual liquid comprises a syphon.
Claim 8
Dependent Claim
17 words
An apparatus as claimed in claim 1 which is located outside a developing chamber for diazotype materials.
Claim 9
Dependent Claim
20 words
An apparatus as claimed in claim 1 which is located at least partially inside a developing chamber for diazotype materials.
Claim 10
Dependent Claim
49 words
An apparatus as claimed in claim 1 including a temperature probe in the region of the outlet of the condeser means for gaseous developer medium which temperature probe is connected to a temperature controller whereby the temperature in the vessel for generating the stream of vapor can be adjusted.
Claim 11
Dependent Claim
30 words
An apparatus as claimed in claim 1 wherein the vaporizing vessel means which communicates with the condenser means also communicates with the end of the conduit remote from the vessel.
Claim 12
Dependent Claim
33 words
An apparatus as claimed in claim 1 wherein the condenser means is an air-cooled tube in the form of a coil and wherein the developer medium can be passed downwards through the coil.
Claim 13
Dependent Claim
46 words
An apparatus as claimed in claim 1 wherein the vaporizing vessel means which communicates with the outlet for condensed developer medium is a double channel so arranged that condensed developer medium flows into it at one end and out through an outlet at the other end.
Claim 14
Independent Claim
157 words
A device for vaporizing developer medium from a developer solution for developing apparatus for diazotype materials, having distillation flask means for generating a stream of vapor, the flask means being provided with a heater and an outlet for residual water, rectification column means connected to the distillation flask means, the column means being provided with an inlet for the developer solution, located at the column head or in the vicinity of the column head, and an outlet for the gaseous developer medium, located at the column head or in the vicinity of the column head, condenser means connected to the rectification column means at the outlet for the gaseous developer medium for condensation of a part of the gaseous developer medium, the condensor means having an outlet orifice for the gaseous developer medium, and an outlet for the condensed developer medium, and vaporizing means located in a developing chamber having an outlet for residual condensed developer medium.
Claim 15
Independent Claim
157 words
A device for vaporizing developer medium from a developer solution for developing apparatus for diazotype materials, having distillation flask means for generating a stream of vapor, the flask means being provided with a heater and an outlet for residual water, rectification column means connected to the distillation flask means, the column means being provided with an inlet for the developer solution, located at the column head or in the vicinity of the column head, and an outlet for the gaseous developer medium, located at the column head or in the vicinity of the column head, condenser means connected to the rectification column means at the outlet for the gaseous developer medium for condensation of a part of the gaseous developer medium, the condensor means having an outlet orifice for the gaseous developer medium, and an outlet for the condensed developer medium, and vaporizing means located in a developing chamber having an outlet for residual condensed developer medium.
Claim 16
Dependent Claim
105 words
A process for developing diazotype material in a developing chamber which is provided with gaseous developer medium comprising the steps of causing a stream of developer solution flowing in one general direction to come into intimate contact with a stream of vapor flowing in the opposite general direction so that exchange of material takes place between the vapor and the developer solution to produce a gaseous developer medium, passing the gaseous developer medium through a condenser to condense a part thereof, passing the remaining gaseous developer medium to the developing chamber, and passing the condensed developer medium to a vaporizing vessel in the developing chamber.
Claim 17
Dependent Claim
105 words
A process for developing diazotype material in a developing chamber which is provided with gaseous developer medium comprising the steps of causing a stream of developer solution flowing in one general direction to come into intimate contact with a stream of vapor flowing in the opposite general direction so that exchange of material takes place between the vapor and the developer solution to produce a gaseous developer medium, passing the gaseous developer medium through a condenser to condense a part thereof, passing the remaining gaseous developer medium to the developing chamber, and passing the condensed developer medium to a vaporizing vessel in the developing chamber.
Claim 18
Dependent Claim
12 words
A process as claimed in claim 14 which is carried out continuously.
Claim 19
Dependent Claim
18 words
A process as claimed in claim 15 wherein the developer solution partly comprises condensate from the developing chamber.
Claim 20
Dependent Claim
20 words
A process as claimed in claim 15 wherein the gaseous developer medium comprises a mixture of ammonia and water vapor.
References Cited (Backward Citations)
CA573464A
Cited
US631461A
Cited
US2096015A
Cited
US2108914A
Cited
US2522529A
Cited
US3147687A
Cited
GB1096830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-11 | 1980-07-12 | 1981-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-11 | 1984-07-12 | 1985-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-11 | 1988-07-12 | 1989-01-11 | $7700.00 | Window Closed / Lapsed |