Patent EP0449336A1 successfully refreshed from Google Patents.
EP0449336A1
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EP
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Method of and apparatus for setting original in image scanner
Assignee: Dainippon Screen Manufacturing Co Ltd
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Filing: 1988-08-10
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Granted: —
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Expires: 2008-08-10
Abstract
Abstract An original (1) is held in on original holder (11), and the original holder (11) is loaded in a projector (10). An image of the original (1) is projected on a layout sheet (18) placed on a digitizer (17), whereby reference data expressing position of a desired region of the original (1) to be reproduced is obtained. The original holder (11) is then set in an image scanner (19) while holding the original (1), and photoelectric scanning is performed according to the reference data.
Inventors
- 👤 Masahiro Dainippon Screen Mfg. Co. Ltd Yamamoto
- 👤 Makoto Dainippon Screen Mfg. Co. Ltd Hirosawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 09:36
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/00681; H04N1/00742; H04N1/00748; H04N1/00763; H04N1/00766; H04N1/00785; H04N1/00787; H04N1/04; H04N1/06; H04N1/387; H04N1/3877; H04N2201/00; H04N2201/04; H04N2201/0402; H04N2201/0422
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
343 words
A method of setting an original (1) in an image scanner (19) for reading an image of a desired area (43) on said original (1) thorugh an image scanning process, said method comprising the steps of: (a) preparing an original holder (11) provided with a reference mark (42) and capable of holding said original (1), (b) setting said original (1) in said original holder (11), so that said original (1) is held by said original holder (11), (c) projecting an image of said original (1) held in said original holder (11) on a sheet member (18) with an image projector (10), wherein an image of said reference mark (42) is also projected with said image projector (10) on said sheet member (18) to give a projected reference mark, (d) observing respecitve images of said original (1) and said reference mark (42) projected on said sheet member (18), to specify a rectangular region (S₂) including said desired area (43) in said original (1) according to a predetermined scanning plan with respect to said original (1), (e) obtaining a reference data indicating a location and an incline angle of said rectangular region (S₂) in said original holder (11), through the steps of: (e-1) specifiying a rectangular region (S₂₀) on said sheet member (18) which includes a projected image of said desired area (43), existing in said projected image of said original (1), and (e-2) finding a positional relationship between said rectangular region (S₂₀) on said sheet member (18) and said projected reference mark (42) to obtain said reference data, (f) setting said original holder (11) holding said original (1) into said image scanner (19), wherein a spatial relationship between said original holder (11) and said image scanner (19) is so adjusted with reference to said reference data that a side of said rectangular region (S₂) is parallel to a scanning direction in said image scanner (19), and (g) delivering said reference data to said image scanner (19) so that only said rectangular region (S₂) on said original (1) is scanned with said image scanner (19).
Claim 2
Dependent Claim
93 words
A method in accordance with claim 1, characterized in that said image projector (10) projects respective images of said original (1) and said reference mark (42) on said sheet member (18) while magnifying said respective images, and said reference data is obtained through the step of transforming a data expressing said positional relationship between said rectangular region (S₂₀) on said sheet member (18) and said projected reference mark (42) on the basis of a value of a magnification factor at which said projector (10) projects said respective images on said sheet member (18).
Claim 3
Dependent Claim
175 words
A method in accordance with claim 1 or 2, characterized in that said image scanner (19) is provided for reading said image of said desired area (43) to obtain an image data which is to be delivered to an image recorder, said image recorder is operable to record an image expressed by said image data on a recording medium, said sheet member (18) is a layout sheet on which a location of said image of said desired area (43) on said recording medium is indicated, said rectangular region (S₂₀) on said sheet member (18) having a side parallel to an edge line of said layout sheet, and said reference data includes: a first reference data representing coordinates of an apex of said rectangular region (S₂) in said original (1) in a coordinate system defined on said original holder (11), and a second reference data representing said incline angle at which said rectangular region (S₂) in said original (1) is inclined from a reference direction on said original holder (11) indicated by said reference mark (42).
Claim 4
Dependent Claim
297 words
An image scanning system for reading an image of an original, comprising: (a) an original holder (11) for holding an original (1), comprising: (a-1) first and second frame members (12, 13) connected with each other through a hinge means (40) at respective edges of said first and second frame members (12, 13), (a-2) transparent plate members (14) provided in windows (w) surrounded by said first and second frame members (12, 13), respectively, wherein said original (1) is held between said transparent plate members (14), and (a-3) a projectable reference mark (42) provided in said first and second frame members (12, 13) or said transparent plate members (14), (b) an image projector means (10) comprising: (b-1) light source means (15) for generating a light toward said original holder (11) holding said original (1), and (b-2) a projection plane means (18) on which respecitve images of said original (1) and said reference mark (42) are projected, wherein said image projector (10) is employed for observing said respective images of said original (1) and said reference mark (42) on said projection plane means (18) to obtain a reference data indicating positional and angular relation between said reference mark means (42) and said original (1) held in said original holder (11), and (c) an image scanner (19) comprising: (c-1) table means (20) capable of accepting thereon said original holder (11) holding said original (1) carried from said image projector (10), (c-2) means (2) for inputting said reference data, and (c-3) image reader means (39) for reading an image of said original (1) held in said original holder (11) placed on said table means (20), wherein an area (43) of said image of said original (1) read by said image reader means (39) is determined as a function of said reference data.
Claim 5
Dependent Claim
91 words
An image scanning system of claim 4, characterized in that said table means (20) comprises: (c-1-1) a hollow member having a window (w), and (c-1-2) a rotary table (26) which is so mounted in said window (w) as to rotate around a center of said rotary table (26), said window (w) having a shape corresponding to the shape of said original holder (11) holding said original (1), whereby said original (1) held in said original holder (11) can be set into said window (w) and rotated with said rotary table (26).
Claim 6
Dependent Claim
70 words
An image scanning system of claim 5, characterized in that said table means (20) further comprises: (c-1-3) a rotary drive mechanism (29) provided in said hollow box member for rotating said rotary table (26) with a motor (30), and (c-1-4) an angle detector (32) provided in said hollow box member for detecting a rotation angle of said rotary table (26) from a predetermined direction defined on said hollow box member.
Claim 7
Dependent Claim
70 words
An image scanning system of claim 5 or 6, characterized in that angular indexes (33) are marked on said scan table (20) around said window (w), and an indication mark (34) is provided on an edge of said rotary table (26), whereby a rotation angle of said rotary table (26) can be found by observing what angular index within said angular indexes (33) is indicated by said indication mark (34).
References Cited (Backward Citations)
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