US4987499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image reading device
Assignee: Fujifilm Holdings Corp
•
Filing: 1989-09-01
•
Granted: 1991-01-22
•
Expires: 2009-09-01
Abstract
Abstract An image reading device includes original illuminating means for applying illuminating light to a surface of an original which contains image information at an illuminating angle α with respect to a line normal to the surface of the original, and image reading means for reading light containing the image information and reflected by the surface of the original in response to application of the illuminating light thereto, at a reading angle β with respect to said line normal to the surface of the original. The illuminating angle α and the reading angle β are selected to meet the following relationship: -α-φ≧β>-90° or -α+φ≦β<90° where ±φ(φ>0) is an angle from the regular reflection of said illuminating light in order to remove the surface reflections from the surface of the original. Moreover, the illuminating angle α and the reading angle β are selected to meet the following relationship: |β|>|α| and αβ>0.
Inventors
- 👤 Kei Kimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:42
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/024; H04N1/028; H04N1/02815; H04N1/0282; H04N1/02835
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
129 words
An image reading device comprising: original illuminating means for applying illuminating light to a surface of an original which contains image information at an illuminating angle α with respect to a line normal to the surface of the original; image reading means for reading light containing the image information and reflected by the surface of the original in response to application of the illuminating light thereto at a reading angle β with respect to said line normal to the surface of the original; and said illuminating angle α and said reading angle β being selected to meet the following relationship: -α-φ≧β>-90° or -α+φ≦β<90° where ±φ(φ>0) is an angle from the regular reflection of said illuminating light in order to remove the surface reflections from the surface of the original.
Claim 2
Dependent Claim
129 words
An image reading device comprising: original illuminating means for applying illuminating light to a surface of an original which contains image information at an illuminating angle α with respect to a line normal to the surface of the original; image reading means for reading light containing the image information and reflected by the surface of the original in response to application of the illuminating light thereto at a reading angle β with respect to said line normal to the surface of the original; and said illuminating angle α and said reading angle β being selected to meet the following relationship: -α-φ≧β>-90° or -α+φ≦β<90° where ±φ(φ>0) is an angle from the regular reflection of said illuminating light in order to remove the surface reflections from the surface of the original.
Claim 3
Dependent Claim
22 words
An image reading device according to claim 1, wherein said illuminating angle α is selected to be in the range of 45°>|α|.
Claim 4
Dependent Claim
22 words
An image reading device according to claim 2, wherein said reading angle β is selected to be in the range of 45°≧|β|.
Claim 5
Dependent Claim
102 words
An image reading device comprising: original illuminating means applying illuminating light to a surface of an original which contains image information at an illuminating angle α with respect to a line normal to the surface of the original; image reading means for reading light containing the image information and reflected by the surface of the original in response to application of the illuminating light thereto, at a reading angle β with respect to said line normal to the surface of the original; and said illuminating angle α and said reading angle β being selected to meet the following relationship: |β|>|α| and αβ>0
Claim 6
Dependent Claim
102 words
An image reading device comprising: original illuminating means applying illuminating light to a surface of an original which contains image information at an illuminating angle α with respect to a line normal to the surface of the original; image reading means for reading light containing the image information and reflected by the surface of the original in response to application of the illuminating light thereto, at a reading angle β with respect to said line normal to the surface of the original; and said illuminating angle α and said reading angle β being selected to meet the following relationship: |β|>|α| and αβ>0
Claim 7
Dependent Claim
54 words
An image reading device according to claim 4, wherein said illuminating angle α and said reading angle β are selected to meet the following relationship: -α-φ≧β>-90° or -α-φ≦β<90° where ±φ(φ>0) is an angle from the regular reflection of said illuminating light in order to remove the surface reflections from the surface of the original.
Claim 8
Dependent Claim
24 words
An image reading device according to claim 4 or 5, wherein said illuminating angle α is selected to be in the range of 45°>|α|.
Claim 9
Dependent Claim
27 words
An image reading device according to any one of claims 4 and 5 wherein said reading angle β is selected to be in the range of 45°≧|β|.
Claim 10
Dependent Claim
23 words
An image reading device according to claim 6, wherein said reading angle β is selected to be in the range 45° ≧ IβI.
References Cited (Backward Citations)
US4010364A
Cited
JPS5277513A
Cited
US4058723A
Cited
JPS5772468A
Cited
US4707615A
Cited
JPS60194871A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-01-21 | 1994-07-23 | 1995-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-21 | 1998-07-23 | 1999-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-21 | 2002-07-23 | 2003-01-22 | $7700.00 | Window Closed / Lapsed |