Patent US4514767A successfully refreshed from Google Patents.
US4514767A
Expired / Lapsed
US
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Apparatus for making masks and/or block copies for printing
Assignee: Dai Nippon Printing Co Ltd
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Filing: 1982-12-23
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Granted: 1985-04-30
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Expires: 2002-12-23
Abstract
Abstract Masks or block copies for printing are fabricated by an apparatus comprising: a picture input device for obtaining through a filter a signal relating to the optical density of the picture of an object to be introduced as input; a picture processing device for subjecting the resulting picture optical density data from the picture input device to operational processing thereby to form a diagram figure; and a device for forming a mask or block copy for printing on the basis of the resulting diagram figure data obtained by means of the picture processing device.
Inventors
- 👤 Yasuo Kubota
- 👤 Kazuhiko Tanaka
- 👤 Kazuyuki Kikushima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:26
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/387
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
182 words
An apparatus for making masks for printing comprising: (a) a picture input device for deriving through a filter a signal relating to the optical density of a picture of an object to be introduced as input; (b) a picture processing device for subjecting the resulting picture optical density data from said picture input device to operational processing thereby to form a line drawing picture including: (i) a device for obtaining a picture signal relating to an outline specifying sheet, a block copy, or a pattern original from said picture input device to compute an optical density histogram, (ii) a device for setting an optimum slice value relating to the state of optical density distribution of picture elements on the basis of the resulting output of the computing device; and, (iii) a device for subjecting, on the basis of said optimum slice value, the output of said picture input device to thresholding; and (c) a device for forming a mask or block copy for printing on the basis of the resulting line drawing picture data obtained by means of the picture processing device.
Claim 2
Independent Claim
182 words
An apparatus for making masks for printing comprising: (a) a picture input device for deriving through a filter a signal relating to the optical density of a picture of an object to be introduced as input; (b) a picture processing device for subjecting the resulting picture optical density data from said picture input device to operational processing thereby to form a line drawing picture including: (i) a device for obtaining a picture signal relating to an outline specifying sheet, a block copy, or a pattern original from said picture input device to compute an optical density histogram, (ii) a device for setting an optimum slice value relating to the state of optical density distribution of picture elements on the basis of the resulting output of the computing device; and, (iii) a device for subjecting, on the basis of said optimum slice value, the output of said picture input device to thresholding; and (c) a device for forming a mask or block copy for printing on the basis of the resulting line drawing picture data obtained by means of the picture processing device.
Claim 3
Dependent Claim
46 words
An apparatus according to claim 1 wherein said picture input device derives two-value-image signals according to slice values set with respect respectively to small sub-areas respectively therefrom, the small sub-areas being of a specific number set on said picture, and thus forms a line drawing picture.
Claim 4
Independent Claim
126 words
An apparatus for making a cut-out mask for printing comprising: (a) a picture input device for deriving a signal relating to picture optical density of an input original; (b) a picture operation device for subjecting the resulting data obtained from said picture input device to a picture operation to form cut-out line data; (c) a display and correction device having correction input means and operating on the basis of data respectively from the picture input device and the picture operation device, to display the cut-out line and to carry out correction of the cut-out line with respect to necessary parts; and (d) a device for forming a cut-out mask for printing on the basis of the corrected cut-out line data from the display and correction device.
Claim 5
Independent Claim
126 words
An apparatus for making a cut-out mask for printing comprising: (a) a picture input device for deriving a signal relating to picture optical density of an input original; (b) a picture operation device for subjecting the resulting data obtained from said picture input device to a picture operation to form cut-out line data; (c) a display and correction device having correction input means and operating on the basis of data respectively from the picture input device and the picture operation device, to display the cut-out line and to carry out correction of the cut-out line with respect to necessary parts; and (d) a device for forming a cut-out mask for printing on the basis of the corrected cut-out line data from the display and correction device.
Claim 6
Dependent Claim
23 words
An apparatus according to claim 3 wherein said display and correction device displays the cut-out line and an original picture in superimposed state.
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) | 1988-04-29 | 1988-10-29 | 1989-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-29 | 1992-10-29 | 1993-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-29 | 1996-10-29 | 1997-04-30 | $7700.00 | Window Closed / Lapsed |