US3714883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for wet treatment of elongated strip-shaped carriers for light sensitive material
Assignee: Agfa Gevaert AG
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Filing: 1971-06-28
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Granted: 1973-02-06
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Expires: 1991-06-28
Abstract
Abstract A machine for repeated wet treatment of exposed film strips or the like with one or more liquids has one or more stacks of superimposed treating sections wherein the film strips advance in horizontal planes so that their emulsion-coated sides face downwardly. Each section contains liquid applying rollers which dip into supplies of liquid treating agents and contact the undersides of the travelling film strips. The liquid applying rollers alternate with liquid removing rollers which remove the layers of liquid applied by the preceding liquid applying rollers and direct the thus removed liquid into channels for evacuation from the machine. The film strips are pulled by advancing rolls which are mounted downstream of the last treating section, and the liquid applying and liquid removing rollers are driven in opposite directions to respectively brake and accelerate the adjoining portions of the strips. This insures that the tension of film strips cannot increase to a value at which the strips would be likely to tear or to slip off their guide rollers.
Inventors
- 👤 W Hunicke
- 👤 R Spohr
- 👤 K Schranz
- 👤 H Frick
- 👤 J Busch
- 👤 E Schon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:45
CPC Classifications
G; G03; G03D; G03D5/00; G03D5/06; G03D5/067
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
231 words
In a machine for wet treatment of elongated strips, particularly for developing and related treatment of exposed light sensitive material which is applied to one side of an elongated strip-shaped carrier, a combination comprising at least one treating unit having a plurality of superimposed treating sections each including at least one source of a liquid treating medium, a plurality of rotary roller-shaped liquid applying members dipping into said at least one source so that the peripheral surfaces of said members draw layers of liquid, a plurality of rotary roller-shaped liquid removing members alternating with said liquid applying members, the axes of said liquid applying and liquid removing members being located in substantially horizontal planes and drive means for rotating said liquid applying and liquid removing members in opposite directions; guide means defining an elongated path for the transport of strip-shaped carriers through successive sections so that said one side of each carrier contacts said liquid applying and liquid removing members with attendant application of liquid layers by said liquid applying members and with subsequent removal of such layers by said liquid removing members; and advancing means located downstream of said sections for advancing the carriers along said path, said liquid applying and liquid removing members cooperating to maintain the tensional stresses upon the carriers in said path within a predetermined range to prevent tearing of carriers during transport along said path.
Claim 2
Dependent Claim
231 words
In a machine for wet treatment of elongated strips, particularly for developing and related treatment of exposed light sensitive material which is applied to one side of an elongated strip-shaped carrier, a combination comprising at least one treating unit having a plurality of superimposed treating sections each including at least one source of a liquid treating medium, a plurality of rotary roller-shaped liquid applying members dipping into said at least one source so that the peripheral surfaces of said members draw layers of liquid, a plurality of rotary roller-shaped liquid removing members alternating with said liquid applying members, the axes of said liquid applying and liquid removing members being located in substantially horizontal planes and drive means for rotating said liquid applying and liquid removing members in opposite directions; guide means defining an elongated path for the transport of strip-shaped carriers through successive sections so that said one side of each carrier contacts said liquid applying and liquid removing members with attendant application of liquid layers by said liquid applying members and with subsequent removal of such layers by said liquid removing members; and advancing means located downstream of said sections for advancing the carriers along said path, said liquid applying and liquid removing members cooperating to maintain the tensional stresses upon the carriers in said path within a predetermined range to prevent tearing of carriers during transport along said path.
Claim 3
Dependent Claim
231 words
In a machine for wet treatment of elongated strips, particularly for developing and related treatment of exposed light sensitive material which is applied to one side of an elongated strip-shaped carrier, a combination comprising at least one treating unit having a plurality of superimposed treating sections each including at least one source of a liquid treating medium, a plurality of rotary roller-shaped liquid applying members dipping into said at least one source so that the peripheral surfaces of said members draw layers of liquid, a plurality of rotary roller-shaped liquid removing members alternating with said liquid applying members, the axes of said liquid applying and liquid removing members being located in substantially horizontal planes and drive means for rotating said liquid applying and liquid removing members in opposite directions; guide means defining an elongated path for the transport of strip-shaped carriers through successive sections so that said one side of each carrier contacts said liquid applying and liquid removing members with attendant application of liquid layers by said liquid applying members and with subsequent removal of such layers by said liquid removing members; and advancing means located downstream of said sections for advancing the carriers along said path, said liquid applying and liquid removing members cooperating to maintain the tensional stresses upon the carriers in said path within a predetermined range to prevent tearing of carriers during transport along said path.
Claim 4
Dependent Claim
231 words
In a machine for wet treatment of elongated strips, particularly for developing and related treatment of exposed light sensitive material which is applied to one side of an elongated strip-shaped carrier, a combination comprising at least one treating unit having a plurality of superimposed treating sections each including at least one source of a liquid treating medium, a plurality of rotary roller-shaped liquid applying members dipping into said at least one source so that the peripheral surfaces of said members draw layers of liquid, a plurality of rotary roller-shaped liquid removing members alternating with said liquid applying members, the axes of said liquid applying and liquid removing members being located in substantially horizontal planes and drive means for rotating said liquid applying and liquid removing members in opposite directions; guide means defining an elongated path for the transport of strip-shaped carriers through successive sections so that said one side of each carrier contacts said liquid applying and liquid removing members with attendant application of liquid layers by said liquid applying members and with subsequent removal of such layers by said liquid removing members; and advancing means located downstream of said sections for advancing the carriers along said path, said liquid applying and liquid removing members cooperating to maintain the tensional stresses upon the carriers in said path within a predetermined range to prevent tearing of carriers during transport along said path.
Claim 5
Dependent Claim
25 words
A combination as defined in claim 1, wherein said liquid applying members rotate counter to the direction of lengthwise movement of carriers along said path.
Claim 6
Dependent Claim
26 words
The combination as defined in claim 2, further comprising means for collecting the liquid treating medium which is separated from carriers by said liquid removing members.
Claim 7
Dependent Claim
55 words
A combination as defined in claim 1, wherein the liquid removing members in each of said sections include a foremost member, as considered in the direction of movement of carriers along said path, and wherein each of said foremost members is driven to rotate in the direction of lengthwise movement of carriers along said path.
Claim 8
Dependent Claim
66 words
A combination as defined in claim 1, wherein said advancing means comprises a pair of advancing rollers arranged to pull the carriers along said path, the liquid removing members rotate in the direction of lengthwise movement of carriers along said path to assist the advancing rollers and the liquid applying members rotate counter to the direction of lengthwise movement of carriers to oppose said advancing rollers.
Claim 9
Dependent Claim
66 words
A combination as defined in claim 1, wherein said drive means rotates said liquid applying members counter to the direction of lengthwise movement of said carriers, each of said sources comprising a casing rotatably mounting the respective liquid applying members and further comprising regulating means for maintaining the upper surface of the supply of liquid treating medium in each of said casings at a predetermined level.
Claim 10
Dependent Claim
78 words
A combination as defined in claim 6, further comprising a main source of liquid treating medium for at least one of said sections and a container connected with said main source and communicating with the casings in said one section, said regulating means comprising valve means arranged to control the inflow of liquid from said main source into saId container so that the level of the upper surface of liquid in said container corresponds to said predetermined level.
Claim 11
Dependent Claim
54 words
A combination as defined in claim 1, wherein each of said sources in at least one of said sections comprises a liquid-containing casing for each liquid applying member in said at least one section, and further comprising heating means for maintaining the temperature of liquid treating medium in said casings within a predetermined range.
Claim 12
Dependent Claim
23 words
A combination as defined in claim 8, wherein said heating means comprises a source of a heated gas having a predetermined moisture content.
Claim 13
Dependent Claim
32 words
A combination as defined in claim 9, further comprising means for admitting said heated gas into said at least one treating unit subsequent to exchange of heat with liquid in said casings.
Claim 14
Dependent Claim
41 words
A combination as defined in claim 1, comprising a plurality of treating units disposed side-by-side and additional guide means for guiding the carriers during travel from the last section of a preceding unit into the foremost section of the next-following unit.
Claim 15
Dependent Claim
30 words
A combination as defined in claim 1, further comprising a drying unit for said carriers, said drying unit being disposed at a level above said at least one treating unit.
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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) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |