US3917402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for collating patterns
Assignee: Ricoh Co Ltd
•
Filing: 1974-06-17
•
Granted: 1975-11-04
•
Expires: 1994-06-17
Abstract
Abstract A method and apparatus to collating patterns, which is capable of detecting non-overlapping portions of two or more patterns. The apparatus comprises a channel plate having a recovery time response, a phosphor screen for converting secondary electrons emitted by the plate into a scintillation image, and means for controlling the motion of the secondary electrons from the plate toward the phosphor screen. The non-overlapping portions are illuminated on the phosphor screen in a noticeable manner.
Inventors
- 👤 Wasaburo Ohta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:22
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/117; A61B5/1171; A61B5/1172; G; G06; G06V; G06V10/00; G06V10/88; G07; G07C; G07C9/00; G07C9/30; G07C9/32; G07C9/37; G07D; G07D7/00; G07D7/06; G07D7/12; H; H01; H01J; H01J31/00; H01J31/08; H01J31/26; H01J31/28; H01J31/286; H01J43/00; H01J43/04; H01J43/06; H01J43/18; H01J43/24
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
132 words
A method of collating patterns comprising the steps of feeding a first pattern to an image amplifier having a channel plate generating secondary electrons at areas corresponding to a pattern fed to the image amplifier and having an output phosphor screen to produce a scintillation image of said secondary electrons, applying a controlled voltage to the amplifier to prevent groups of the secondary electrons generated within the channel plate of the amplifier from reaching the phosphor screen, removing said controlled voltage from the amplifier while secondary electrons generated within the channel plate remain within the channel plate, and concurrently feeding a second pattern to the amplifier to cause a region which lies on the first pattern and which does not lie on the second pattern to be displayed on the phosphor screen.
Claim 2
Independent Claim
132 words
A method of collating patterns comprising the steps of feeding a first pattern to an image amplifier having a channel plate generating secondary electrons at areas corresponding to a pattern fed to the image amplifier and having an output phosphor screen to produce a scintillation image of said secondary electrons, applying a controlled voltage to the amplifier to prevent groups of the secondary electrons generated within the channel plate of the amplifier from reaching the phosphor screen, removing said controlled voltage from the amplifier while secondary electrons generated within the channel plate remain within the channel plate, and concurrently feeding a second pattern to the amplifier to cause a region which lies on the first pattern and which does not lie on the second pattern to be displayed on the phosphor screen.
Claim 3
Dependent Claim
39 words
A method of collating patterns according to claim 1 in whicn subsequent to the application of the voltage, the first pattern is maintained to be fed to the image amplifier at least until the next application of the voltage.
Claim 4
Dependent Claim
52 words
A method of collating patterns according to claim 1 in which said voltage is chosen to permit the overlapping portions of the first and second patterns to be displayed on the phosphor screen with a reduced illumination as compared with that of the detected region during the display of the second pattern.
Claim 5
Independent Claim
178 words
An apparatus for collating patterns comprising: an image amplifier including channel plate means for generating secondary electrons at areas corresponding to a pattern applied to the image amplifier, said channel plate means having a finite recovery time response, and further including output phosphor screen means for producing a scintillation image of said secondary electrons; means for applying a first pattern to said image amplifier to cause said channel plate means to generate secondary electrons at areas of the channel plate means corresponding to said first pattern; means for applying controlled voltage between the channel plate means and the output phosphor screen means to prevent groups of said secondary electrons generated in the channel plate means from reaching the screen means; and means for disconnecting said controlled voltage from the channel plate means and thE screen means while groups of said secondary electrons remain in the channel plate means and for concurrently applying a second pattern to said image amplifier to form on the screen means a scintillation image of the noncongruent portions of said first and second pattern.
Claim 6
Independent Claim
178 words
An apparatus for collating patterns comprising: an image amplifier including channel plate means for generating secondary electrons at areas corresponding to a pattern applied to the image amplifier, said channel plate means having a finite recovery time response, and further including output phosphor screen means for producing a scintillation image of said secondary electrons; means for applying a first pattern to said image amplifier to cause said channel plate means to generate secondary electrons at areas of the channel plate means corresponding to said first pattern; means for applying controlled voltage between the channel plate means and the output phosphor screen means to prevent groups of said secondary electrons generated in the channel plate means from reaching the screen means; and means for disconnecting said controlled voltage from the channel plate means and thE screen means while groups of said secondary electrons remain in the channel plate means and for concurrently applying a second pattern to said image amplifier to form on the screen means a scintillation image of the noncongruent portions of said first and second pattern.
Claim 7
Dependent Claim
22 words
An apparatus as in claim 4 including means for concurrently applying said first pattern and said second pattern to said image amplifier.
Claim 8
Dependent Claim
44 words
An apparatus as in claim 4 wherein said controlled voltage is in the range permitting the congruent portion of the first and second pattern to be displayed on said screen means at a lower intensity than that of the noncongruent portion of the pattern.
References Cited (Backward Citations)
US3313940A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |