EP0514746A1
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EP
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Image processing apparatus
Assignee: Dainippon Screen Manufacturing Co Ltd
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Filing: 1992-05-12
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Granted: —
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Expires: 2012-05-12
Abstract
Abstract The present invention provides an image processing apparatus. The image processing apparatus is capable of determining a color-separation condition suitable for any kind of prepress scanner and comprises an image reading unit, a converting condition storing device for storing at least one converting condition for converting first R.G.B. signals obtained through reading by the image reading unit into second R.G.B. signals which are substantially equivalent to signals obtained through reading by one of the other image reading units equipped with an apparatus other than the image processing apparatus, a first converting device for converting the first R.G.B. signals into the second R.G.B. signals in accordance with the converting condition, a second converting device for converting the second R.G.B. signals into at least one of C.M.Y. signals and C.M.Y.K. signals in accordance with a color-separation condition, a color-separation condition correcting device for correcting the color-separation condition, and a visual image producing device for producing a visual image from the C.M.Y. signals obtained by the second converting device during each color-separation condition correcting step until a final correction.
Inventors
- 👤 Yoshihiro Dainippon Screen Mfg.Co. Ltd. Kishida
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 17:46
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/60; H04N1/6011; H04N1/6016; H04N1/6022; H04N1/6025
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
148 words
An image processing apparatus comprising: an image reading unit; converting condition storing means for storing at least one converting condition for converting first R.G.B. signals obtained through reading by the image reading unit into second R.G.B. signals which are substantially equivalent to signals obtained through reading by one of the other image reading units equipped with an apparatus other than the image processing apparatus; first converting means for converting the first R.G.B. signals into the second R.G.B. signals in accordance with the converting condition; second converting means for converting the second R.G.B. signals into at least one of C.M.Y. signals and C.M.Y.K. signals in accordance with a color-separation condition; color-separation condition correcting means for correcting the color-separation condition; and visual image producing means for producing a visual image from the C.M.Y. signals obtained by the second converting means during each color-separation condition correcting step until a final correction.
Claim 2
Dependent Claim
32 words
An image processing apparatus of claim 1, wherein the one of the other image reading units is an image reading unit equipped with a prepress scanner utilized for producing a color separation.
Claim 3
Dependent Claim
70 words
An image processing apparatus of claim 1, further comprising: selecting means, wherein the converting condition storing means stores a plurality of converting conditions suitable for a plurality of the other image reading units; the selecting means selects one converting condition out of the plurality of the converting conditions; the first converting means converts the first R.G.B. signals into the second R.G.B. signals in accordance with the one selected converting condition.
Claim 4
Dependent Claim
24 words
An image processing apparatus of claim 3, wherein the plurality of the other image reading units are equipped with a plurality of prepress scanners.
Claim 5
Dependent Claim
30 words
An image processing apparatus of claim 1, further comprising: color-separation condition storing means for storing data regarding the corrected color-separation condition into recording media removable from the image processing apparatus.
Claim 6
Dependent Claim
15 words
An image processing apparatus of claim 5, wherein the recording media are magnetic recording media.
Claim 7
Dependent Claim
45 words
An image processing apparatus of claim 1, wherein the visual image producing means includes: converting means for converting the C.M.Y. signals into other R.G.B. signals for display; and a color graphic display for displaying the image in accordance with the other R.G.B. signals for display.
Claim 8
Dependent Claim
27 words
An image processing apparatus of claim 1, wherein the visual image producing means includes a color printer for printing out the image based on the C.M.Y. signals.
Claim 9
Dependent Claim
202 words
An image processing apparatus comprising: an image reading unit: converting condition storing means for storing a plurality of converting conditions suitable for a plurality of kinds of prepress scanners utilized for producing a color separation for converting first R.G.B. signals obtained through reading by the image reading unit into second R.G.B. signals which are substantially equivalent to the signals obtained through reading by a plurality of other image reading units equipped with the plurality of the prepress scanners; selecting means for selecting one converting condition out of the plurality of the converting conditions; first converting means for converting the first R.G.B. signals into the second R.G.B. signals in accordance with the one selected converting condition; second converting means for converting the second R.G.B. signals into at least one of C.M.Y. signals and C.M.Y.K. signals in accordance with a color-separation condition; color-separation condition correcting means for correcting the color-separation condition; color-separation condition storing means for storing data regarding the corrected color-separation condition into data storing media removal from the image processing apparatus; and visual image producing means for producing a visual image from the C.M.Y. signals obtained by the second converting means during each color-separation condition correcting step until the a final correction.
Claim 10
Dependent Claim
149 words
An image processing method of an image processing apparatus comprising: a step of reading an original by an image reading unit; a first converting step of converting first R.G.B. signals obtained through reading by the image reading unit into second R.G.B. signals which are substantially equivalent to the signals obtained through reading by one of the other input scanners equipped with an apparatus other than the image processing apparatus in accordance with a converting condition for converting the first R.G.B. signals into the second R.G.B. signals; a second converting step of converting the second R.G.B. signals into at least one of C.M.Y. signals and C.M.Y.K. signals in accordance with a color-separation condition; a step of correcting the color-separation condition; a visual image producing step of producing a visual image from the C.M.Y. signals obtained in the second converting steps during each color-separation condition correcting step until a final correction.
Claim 11
Dependent Claim
200 words
An image processing method comprising: a step of reading an original by an image reading unit; a step of selecting one converting condition out of a plurality of the converting conditions suitable for a plurality of kinds of prepress scanners utilized for producing a color separation for converting first R.G.B. signals obtained through reading by the image reading unit into second R.G.B. signals which are substantially equivalent to the signals obtained through reading by a plurality of other image reading units equipped with the plurality of the prepress scanners; a first converting step of converting the first R.G.B. signals into the second R.G.B. signals in accordance with the one selected converting condition; a second converting step of converting the second R.G.B. signals into at least one of C.M.Y. signals and C.M.Y.K. signals in accordance with a color-separation condition; a step of correcting a color-separation condition for correcting the color-separation condition; a step of storing data regarding the corrected color-separation condition into recording media removal from the image processing apparatus; and a visual image producing step for producing a visual image from the C.M.Y. signals obtained in the second converting step during each color-separation condition correcting step until a final correction.
References Cited (Backward Citations)
EP0310829A2
Cited
GB2217142A
Cited
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