US5141323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color measurement system
Assignee: Heidelberger Druckmaschinen AG
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Filing: 1989-09-11
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Granted: 1992-08-25
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Expires: 2009-09-11
Abstract
Abstract Color measurement system for offset printing, having a bridge for spanning an original which is to be measured and a color-measuring device movably disposed on the bridge, the color-measuring device comprising a first three-color simultaneous measuring head for densitometric measurement, and a second three-color simultaneous measuring head for colorimetric measurement.
Inventors
- 👤 Helmut Kipphan
- 👤 Gerhard Loffler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:00
CPC Classifications
B; B41; B41F; B41F33/00; B41F33/0027; G; G01; G01J; G01J3/00; G01J3/46; G01J3/50; G01J3/51
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
50 words
Color measurement system for offset printing, having a bridge for spanning an original which is to be measured and a color-measuring device movably disposed on the bridge, the color-measuring device comprising a first three-color simultaneous measuring head for densitometric measurement, and a second three-color simultaneous measuring head for colorimetric measurement.
Claim 2
Dependent Claim
50 words
Color measurement system for offset printing, having a bridge for spanning an original which is to be measured and a color-measuring device movably disposed on the bridge, the color-measuring device comprising a first three-color simultaneous measuring head for densitometric measurement, and a second three-color simultaneous measuring head for colorimetric measurement.
Claim 3
Dependent Claim
68 words
Color measurement system for offset printing having a bridge for spanning an original which is to be measured, and a color-measuring device movably disposed on the bridge, the color-measuring device comprising a simultaneous measuring head with six optoelectric receivers, and three color filters for densitometric measurement and three color filters for colorimetric measurement, all of said filters, respectively, being disposed in optical paths of said six optoelectric receivers.
Claim 4
Dependent Claim
68 words
Color measurement system for offset printing having a bridge for spanning an original which is to be measured, and a color-measuring device movably disposed on the bridge, the color-measuring device comprising a simultaneous measuring head with six optoelectric receivers, and three color filters for densitometric measurement and three color filters for colorimetric measurement, all of said filters, respectively, being disposed in optical paths of said six optoelectric receivers.
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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) | 1995-08-25 | 1996-02-24 | 1996-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-25 | 2000-02-24 | 2000-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-25 | 2004-02-24 | 2004-08-25 | $7700.00 | Window Closed / Lapsed |