US5140411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image reading apparatus capable of discriminating between a chromatic and an achromatic portion of an image
Assignee: Konica Minolta Inc
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Filing: 1990-03-30
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Granted: 1992-08-18
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Expires: 2010-03-30
Abstract
Abstract A color image reader for discriminating a color component of a light image, comprising a first photoelectric transfer device for transferring visible range light to an electric signal, a second photoelectric transfer device for transferring infrared range light to another electric signal, and a discriminator for discriminating between a chromatic portion of the light image and an achromatic portion of the light image according to the two different electric signals.
Inventors
- 👤 Satoshi Haneda
- 👤 Masakazu Fukuchi
- 👤 Seiko Naganuma
- 👤 Masahiko Itaya
- 👤 Shunji Matsuo
- 👤 Shizuo Morita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:17
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/48; H04N1/482
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
102 words
An apparatus for reading a light image representing an original image, the apparatus comprising: a first photoelectric means for generating a first electrical signal in response to light from the light image in the visible range; a second photoelectric means for generating a second electrical signal in response to light from the light image in the infrared range; and means for determining whether a portion of the original image is achromatic and formed from a plurality of chromatic process inks or achromatic and formed from an achromatic process ink on the basis of said first electrical signal and said second electrical signal.
Claim 2
Independent Claim
102 words
An apparatus for reading a light image representing an original image, the apparatus comprising: a first photoelectric means for generating a first electrical signal in response to light from the light image in the visible range; a second photoelectric means for generating a second electrical signal in response to light from the light image in the infrared range; and means for determining whether a portion of the original image is achromatic and formed from a plurality of chromatic process inks or achromatic and formed from an achromatic process ink on the basis of said first electrical signal and said second electrical signal.
Claim 3
Dependent Claim
25 words
The apparatus of claim 1, further comprising means for separating said light image into light in the visible range and light in the infrared range.
Claim 4
Dependent Claim
48 words
The apparatus of claim 2, further comprising a filter means, having a plurality of filters, for delimiting the wavelength of said light image so that red, green, and blue image components of the light image are separately supplied to said first photoelectric means and said second photoelectric means.
Claim 5
Dependent Claim
43 words
The apparatus of claim 3, wherein said filter means further comprises a filter for delimiting the wavelength of said light image so that an achromatic image component of the light image is supplied to said first photoelectric means and said second photoelectric means.
Claim 6
Dependent Claim
21 words
The apparatus of claim 4, further comprising means for scanning a document containing the original image to obtain said light image.
Claim 7
Dependent Claim
41 words
The apparatus of claim 3, wherein the plurality of filters includes a light amount adjustment filter so that said red, green, and blue image components are sensed with the same sensitivity by said first photoelectric means and said second photoelectric means.
Claim 8
Dependent Claim
60 words
The apparatus of claim 6, wherein said filter means comprises a filter holder means for shifting said plurality of filters so that said red, green, and blue image components are separately supplied to said first photoelectric means and said second photoelectric means, wherein said plurality of filters are each rectangular and positioned in rectangular frames on said filter holder means.
Claim 9
Dependent Claim
20 words
The apparatus of claim 6, further comprising means for rotating said filter holder means to shift said plurality of filters.
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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) | 1995-08-18 | 1996-02-17 | 1996-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-18 | 2000-02-17 | 2000-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-18 | 2004-02-17 | 2004-08-18 | $7700.00 | Window Closed / Lapsed |