US4875067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing apparatus
Assignee: Fujifilm Holdings Corp
•
Filing: 1988-07-18
•
Granted: 1989-10-17
•
Expires: 2008-07-18
Abstract
Abstract A conveying type apparatus for processing light-sensitive plates provided with at least two processing baths, which comprises a roller type device for removing a processing solution from the plate processed, wherein said device comprises a pair of squeeze rollers and is disposed at the boundary between a preceding bath and an adjacent subsequent bath so as to separate the solutions in these baths from one another; and means for removing the processing solution on the roller surface. This processing apparatus is small-sized one, requires a small space to occupy and makes it possible to reduce the operation and production cost since the number of squeeze rollers required to prevent the processing solutions from causing admixing with one another due to the solutions carried over by a processed plates.
Inventors
- 👤 Hisao Kanzaki
- 👤 Hisao Ohba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:37
CPC Classifications
G; G03; G03D; G03D5/00; G03D5/04; G03F; G03F7/00; G03F7/26; G03F7/30; G03F7/3042; G03F7/3064
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
147 words
A conveying type apparatus for processing light-sensitive plates provided with at least two processing baths which comprises a roller type device for removing a processing solution from the plate processed, wherein said device comprises a pair of squeeze rollers and is disposed at the boundary between a preceding bath and an adjacent subsequent bath so as to separate the solutions in these baths from one another; and means for removing the processing solution on the roller surface; wherein the means for removing a processing solution comprises a roller pressed against a lower roller of the paired rollers and disposed on the side of the preceding bath, a roller pressed to the lower roller of the paired rollers and disposed on the side of the subsequent bath and a roller pressed to an upper roller of the paired rollers and disposed on the side of the subsequent bath.
Claim 2
Dependent Claim
147 words
A conveying type apparatus for processing light-sensitive plates provided with at least two processing baths which comprises a roller type device for removing a processing solution from the plate processed, wherein said device comprises a pair of squeeze rollers and is disposed at the boundary between a preceding bath and an adjacent subsequent bath so as to separate the solutions in these baths from one another; and means for removing the processing solution on the roller surface; wherein the means for removing a processing solution comprises a roller pressed against a lower roller of the paired rollers and disposed on the side of the preceding bath, a roller pressed to the lower roller of the paired rollers and disposed on the side of the subsequent bath and a roller pressed to an upper roller of the paired rollers and disposed on the side of the subsequent bath.
Claim 3
Dependent Claim
34 words
A processing apparatus of claim 1 wherein the processing baths are those for developing, rinsing and/or desensitizing a presensitized plate for use in making lithographic printing plates, which has been imagewise exposed to light.
Claim 4
Dependent Claim
26 words
A processing apparatus of claim 1 wherein the hardness of the rollers for removing a processing solution is not more than 80° expressed in Vickers hardness.
Claim 5
Dependent Claim
26 words
A processing apparatus of claim 3 wherein the hardness of the rollers for removing a processing solution is not more than 60° expressed in Vickers hardness.
Claim 6
Dependent Claim
26 words
A processing apparatus of claim 3 wherein the hardness of the rollers for removing a processing solution is not more than 45° expressed in Vickers hardness.
Claim 7
Dependent Claim
25 words
A processing apparatus of claim 1 wherein the nip pressure between the upper and lower squeeze rollers ranges from 0.1 to 20 kg/cm 2 .
Claim 8
Dependent Claim
25 words
A processing apparatus of claim 6 wherein the nip pressure between the upper and lower squeeze rollers ranges from 0.5 to 10 kg/cm 2 .
Claim 9
Dependent Claim
22 words
A processing apparatus of claim 1 wherein the developing device is a developer spraying type, a dipping type or a brushless type.
Claim 10
Dependent Claim
22 words
A processing apparatus of claim 1 wherein the apparatus is a dipping type processing apparatus or an declined conveying type processing apparatus.
Claim 11
Dependent Claim
167 words
A processing apparatus of claim 1 wherein an angle (α) between a vertical line passing through the center of a rotational axis of the lower roller and a straight line passing through the center of the rotational axis and that of the roller pressed against the lower roller and disposed on the side of the preceding bath is 10° to 60°, an angle (β) between the vertical line passing through the center of the rotational axis and a straight line passing through the center of the rotational axis and that of the roller pressed against the lower roller and disposed on the side of the subsequent bath is 10° to 60° and an angle (γ) between a vertical line passing through the center of the rotational axis of the upper roller and a straight line passing through the rotational center of the upper roller and that of the roller pressed to the upper roller and disposed on the side of the subsequent bath is 0° to 90°.
Claim 12
Dependent Claim
26 words
A processing apparatus of claim 10, wherein the angle (α) and the angle (β) are 20° to 50° and the angle (γ) is 0° to 80°.
References Cited (Backward Citations)
US3589261A
Cited
US3593641A
Cited
US3682079A
Cited
US4142194A
Cited
US4367030A
Cited
US4464035A
Cited
US4687313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-16 | 1993-04-17 | 1993-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-16 | 1997-04-17 | 1997-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-16 | 2001-04-17 | 2001-10-17 | $7700.00 | Window Closed / Lapsed |