Patent US3884573A successfully refreshed from Google Patents.
US3884573A
Expired / Lapsed
US
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Apparatus for high resolution projection printing
Assignee: Applied Materials Inc
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Filing: 1974-01-29
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Granted: 1975-05-20
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Expires: 1994-01-29
Abstract
Abstract A apparatus for high resolution projection printing utilizing a projection printer having a 1:1 object-to-image ratio and forming an erect image. In the preferred embodiment, coplanar master plates and unexposed plates are rotated together in synchronization in the same direction about a common axis of rotation. An optical scanning-projection printing system is moved in a radial direction with respect to the rotational axis of the master and unexposed plates to provide a spiral scan of the image bearing master plates and a corresponding 1:1 spiral printing scan of the unexposed plates. Scanning exposure compensation is achieved by means of a sinusoidal or diamond shaped diaphragm which is positioned in the illumination path and imaged onto the master plates.
Inventors
- 👤 David M Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:12
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/70; G03F7/70058; G03F7/70075; G03F7/70091; G03F7/70216; G03F7/70358; G03F7/70366
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
137 words
A high resolution projection printer comprising: 1. means for positioning a light transmitting planar object at an object plane; 2. means for illuminating a light transmitting planar object positioned at said object plane; 3. means for optically scanning an illuminated light transmitting planar object positioned at said objEct plane; 4. optical means for forming at an image plane, an erect, unity image of an illuminated light transmitting planar object positioned at the object plane in synchronization with the optical scanning of the illuminated object, said optical means including first and scond matched, infinity corrected objectives and an image erecting prism means positioned optically between said objectives; and, 5. means for positioning an unexposed, planar photosensitive element at the image plane whereby the photosensitive element is sequentially exposed in synchronization with the optical scanning of the illuminated object.
Claim 2
Dependent Claim
137 words
A high resolution projection printer comprising: 1. means for positioning a light transmitting planar object at an object plane; 2. means for illuminating a light transmitting planar object positioned at said object plane; 3. means for optically scanning an illuminated light transmitting planar object positioned at said objEct plane; 4. optical means for forming at an image plane, an erect, unity image of an illuminated light transmitting planar object positioned at the object plane in synchronization with the optical scanning of the illuminated object, said optical means including first and scond matched, infinity corrected objectives and an image erecting prism means positioned optically between said objectives; and, 5. means for positioning an unexposed, planar photosensitive element at the image plane whereby the photosensitive element is sequentially exposed in synchronization with the optical scanning of the illuminated object.
Claim 3
Dependent Claim
13 words
means for illuminating a light transmitting planar object positioned at said object plane;
Claim 4
Dependent Claim
13 words
means for illuminating a light transmitting planar object positioned at said object plane;
Claim 5
Dependent Claim
52 words
The apparatus of claim 1 wherein said object and unexposed photosensitive element positioning means are adapted for rotation about a common axis of rotation and wherein said aparatus includes drive means for rotating said object and element positioning means together in synchronization in the same direction about said common axis of rotation.
Claim 6
Dependent Claim
47 words
The apparatus of claim 2 wherein said object and unexposed photosensitive element positioning means comprise turntables which are mounted on a common, rotatable axle with said drive means rotating the axle whereby the turntables are rotated together in synchronization in the same direction about the common axis.
Claim 7
Dependent Claim
15 words
means for optically scanning an illuminated light transmitting planar object positioned at said objEct plane;
Claim 8
Dependent Claim
15 words
means for optically scanning an illuminated light transmitting planar object positioned at said objEct plane;
Claim 9
Dependent Claim
57 words
optical means for forming at an image plane, an erect, unity image of an illuminated light transmitting planar object positioned at the object plane in synchronization with the optical scanning of the illuminated object, said optical means including first and scond matched, infinity corrected objectives and an image erecting prism means positioned optically between said objectives; and,
Claim 10
Dependent Claim
57 words
optical means for forming at an image plane, an erect, unity image of an illuminated light transmitting planar object positioned at the object plane in synchronization with the optical scanning of the illuminated object, said optical means including first and scond matched, infinity corrected objectives and an image erecting prism means positioned optically between said objectives; and,
Claim 11
Dependent Claim
17 words
The apparatus of claim 2 wherein said optical scanning means scans the object in a spiral direction.
Claim 12
Dependent Claim
29 words
The apparatus of claim 4 wherein said spiral scans partially overlap and further including means for providing exposure compensation for the corresponding overlapped images on the unexposed photosensitive element.
Claim 13
Dependent Claim
29 words
means for positioning an unexposed, planar photosensitive element at the image plane whereby the photosensitive element is sequentially exposed in synchronization with the optical scanning of the illuminated object.
Claim 14
Dependent Claim
29 words
means for positioning an unexposed, planar photosensitive element at the image plane whereby the photosensitive element is sequentially exposed in synchronization with the optical scanning of the illuminated object.
Claim 15
Dependent Claim
20 words
The apparatus of claim 1 wherein said matched infinity objectives are movably mounted to permit individual focusing of each objective.
Claim 16
Dependent Claim
15 words
The apparatus of claim 1 wherein said image erecting prism means is an Abbe prism.
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) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |