US4687313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for processing sensitive materials
Assignee: Dainippon Screen Manufacturing Co Ltd
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Filing: 1986-04-03
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Granted: 1987-08-18
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Expires: 2006-04-03
Abstract
Abstract An apparatus for processing sensitive materials has a tank in which film containing a sensitive material is conveyed, the film passing through a processing bath while guided by conveying rollers, and at least one wiper coming into contact with at least one of the conveying rollers facing to a film surface of the sensitive material. A flow of processing solution is produced by at least one inlet or jet in the region where contact occurs between a wiper and a conveying roller, so that any material wiped off the roller is removed away from the contacting region.
Inventors
- 👤 Hiroshi Taniguchi
- 👤 Mitsumasa Tanizawa
- 👤 Masatoshi Ueno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:35
CPC Classifications
G; G03; G03D; G03D3/00; G03D3/08; G03D3/13; G03D3/132
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
115 words
An apparatus for processing sensitive materials in which film comprising a sensitive material is conveyed through a tank filled with processing solution, said film being guided inside said tank by a plurality of conveying rollers, characterized by comprising: at least one wiper means coming into contact with at least one of the plurality of conveying rollers facing to a film surface of the sensitive material for wiping said contacted roller, and; means for producing a directed flow of processing solution through the region of contact between the conveying roller and the contacting wiper means, whereby said directed flow removes away from said contacting region any material wiped from said conveying rollers by said wiper means.
Claim 2
Independent Claim
115 words
An apparatus for processing sensitive materials in which film comprising a sensitive material is conveyed through a tank filled with processing solution, said film being guided inside said tank by a plurality of conveying rollers, characterized by comprising: at least one wiper means coming into contact with at least one of the plurality of conveying rollers facing to a film surface of the sensitive material for wiping said contacted roller, and; means for producing a directed flow of processing solution through the region of contact between the conveying roller and the contacting wiper means, whereby said directed flow removes away from said contacting region any material wiped from said conveying rollers by said wiper means.
Claim 3
Dependent Claim
47 words
An apparatus as claimed in claim 1, further including: a jet communicating with and supported by said flow producing means near said region where said wiping contact occurs for delivering said flow of processing solution, said flow producing means including a filter, a heater and a pump.
Claim 4
Dependent Claim
36 words
An apparatus as claimed in claim 1, wherein said at least one roller with which said wiper comes into contact is a conveying roller corresponding to a U-turn in the passage of the film guided thereby.
Claim 5
Dependent Claim
14 words
An apparatus as claimed in claim 1, wherein said processing solution is a developer.
Claim 6
Dependent Claim
32 words
An apparatus as claimed in claim 1, wherein: said flow producing means comprises a tube for delivering said processing solution to said jet; and said wiper means is mounted to said tube.
References Cited (Backward Citations)
GB1270161A
Cited
US3662660A
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US4125851A
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US3922702A
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-17 | 1991-02-16 | 1991-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-17 | 1995-02-16 | 1995-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-17 | 1999-02-16 | 1999-08-18 | $7700.00 | Window Closed / Lapsed |