Patent US3977986A successfully refreshed from Google Patents.
US3700908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for placing marks on a web
Assignee: Eastman Kodak Co
•
Filing: 1971-08-25
•
Granted: 1972-10-24
•
Expires: 1991-08-25
Abstract
Abstract An apparatus is disclosed for placing chop-marks on the back of a web of photographic prints to facilitate the automatic chopping of the web into individual prints. The apparatus includes a first photoelectric cell that is located downstream of a marker, and which cell, in cooperation with logic circuitry, is used to so control a web drive means that the web is stopped at particular intervals so that a chop-mark may be placed on the back of each print. The apparatus further includes a second photoelectric cell located upstream of the marker which, in cooperation with the logic circuitry, is adapted to check the web for chop-marks which have previously been placed on the back of some of the prints so that the prints having such pre-existing chop-marks are advanced past the marker without having a second mark placed thereon.
Inventors
- 👤 Mark J Devaney Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:17
CPC Classifications
G; G03; G03D; G03D15/00; G03D15/04; G03D15/043; G03D15/046; G03B; G03B17/00; G03B17/24
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
169 words
An apparatus for placing marks in spaced relationship upon a web that is comprised of web portions, said apparatus comprising: means for driving said web, a marker for applying said marks to said web so that at least one mark appears on each of said web portions, first detecting means located downstream of said marker for detecting said marks, means cooperable with said first detecting means for stopping said web upon detection of one of said marks by said first detecting means for the placement of one of said marks on a web portion located proximate to said marker, second detecting means located upstream of said marker for detecting pre-existing marks which may appear on some of said web portions, and means cooperable with said second detecting means for, upon detection of one of said pre-existing marks by said second detecting means, advancing said web portion having one of said preexisting marks past said marker without the placement by said marker of a mark on said last-mentioned web portion.
Claim 2
Independent Claim
169 words
An apparatus for placing marks in spaced relationship upon a web that is comprised of web portions, said apparatus comprising: means for driving said web, a marker for applying said marks to said web so that at least one mark appears on each of said web portions, first detecting means located downstream of said marker for detecting said marks, means cooperable with said first detecting means for stopping said web upon detection of one of said marks by said first detecting means for the placement of one of said marks on a web portion located proximate to said marker, second detecting means located upstream of said marker for detecting pre-existing marks which may appear on some of said web portions, and means cooperable with said second detecting means for, upon detection of one of said pre-existing marks by said second detecting means, advancing said web portion having one of said preexisting marks past said marker without the placement by said marker of a mark on said last-mentioned web portion.
Claim 3
Dependent Claim
61 words
The invention according to claim 1 wherein said apparatus further includes a timing means which is cooperable with said web stopping means for stopping said web after a time period has elapsed, which period is approximately equal to the time the web travels a distance which corresponds to the spacing between two marks which are located respectively on adjacent web portions.
Claim 4
Dependent Claim
32 words
The invention according to claim 1 wherein said marker cooperates with said first detecting means to mark said web in response to the detection of a mark by said first detecting means.
Claim 5
Dependent Claim
24 words
The invention according to claim 1 wherein said first and second detecting means each include a photocell which is adapted to sense said marks.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |