US5267049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image quality adjusting apparatus provided for copying machine
Assignee: Sharp Corp
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Filing: 1992-02-25
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Granted: 1993-11-30
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Expires: 2012-02-25
Abstract
Abstract An image quality adjusting apparatus provided for a copying machine having a capability of adjusting copied image quality of an original, includes a unit for reading image data, a first storing unit for storing image data of the original read by the reading unit, a second storing unit for storing image data of a copied sheet read by the reading unit, the copied sheet being copied by the copying machine, and a unit for deriving correction data by means of comparing the original image data stored in the first storing unit with the copied sheet image data stored in the second storing unit, and amending the original image data on the basis of the derived correction data.
Inventors
- 👤 Kazushi Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:41
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/50; G03G15/5062; G03G15/01; H; H04; H04N; H04N1/00; H04N1/00002; H04N1/00005; H04N1/00007; H04N1/00013; H04N1/00015; H04N1/00026; H04N1/00031; H04N1/00047; H04N1/00053; H04N1/00063; H04N1/00071; H04N1/00082; H04N1/40; H04N1/40006; H04N1/46; H04N1/56; H04N1/60; H04N1/603
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
178 words
An image quality adjusting apparatus for use in a copying machine in order to adjust the copied image quality of an original, said apparatus comprising: means for reading image data; a first storing means for storing image data of said original read by said reading means; a second storing means for storing image data of a copied sheet read by said reading means, an image of said original being copied on the copied sheet by said copying machine; means for setting an image quality adjustment mode after the image of said original is copied; and means for deriving correction data by comparing the image data of said original stored in said first storing means with the image data of said copied sheet stored in said second storing means, and correcting the image data of said original on the basis of the derived correction data, said deriving means being adapted to derive the correction data when the image quality adjustment mode is set by said setting means within a predetermined time after the image of said original is copied.
Claim 2
Dependent Claim
178 words
An image quality adjusting apparatus for use in a copying machine in order to adjust the copied image quality of an original, said apparatus comprising: means for reading image data; a first storing means for storing image data of said original read by said reading means; a second storing means for storing image data of a copied sheet read by said reading means, an image of said original being copied on the copied sheet by said copying machine; means for setting an image quality adjustment mode after the image of said original is copied; and means for deriving correction data by comparing the image data of said original stored in said first storing means with the image data of said copied sheet stored in said second storing means, and correcting the image data of said original on the basis of the derived correction data, said deriving means being adapted to derive the correction data when the image quality adjustment mode is set by said setting means within a predetermined time after the image of said original is copied.
Claim 3
Dependent Claim
17 words
An image quality adjusting apparatus according to claim 1, wherein said reading means includes an optical system.
Claim 4
Dependent Claim
23 words
An image quality adjusting apparatus according to claim 1, wherein each of said first and second storing means includes a random access memory.
Claim 5
Dependent Claim
22 words
An image quality adjusting apparatus according to claim 1, further comprising a display panel for indicating several messages for each operating stage.
Claim 6
Dependent Claim
14 words
An image quality adjusting apparatus according to claim 1, wherein said original is colored.
Claim 7
Dependent Claim
27 words
An image quality adjusting apparatus according to claim 5, further comprising means for resolving the image data of said original into three colors, red, green, and blue.
Claim 8
Dependent Claim
17 words
An image quality adjusting apparatus according to claim 6, wherein said resolving means includes a CCD sensor.
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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) | 1996-11-29 | 1997-05-31 | 1997-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-29 | 2001-05-31 | 2001-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-29 | 2005-05-31 | 2005-11-30 | $7700.00 | Window Closed / Lapsed |