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EP0416654A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Color scanner

Assignee: Fujifilm Holdings Corp
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Filing: 1990-09-07
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Granted: —
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Expires: 2010-09-07
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Abstract

Abstract In the present invention, a color original such as a color reversal film and the like which may be different size (for example, the Brownie, 4" × 5", 35mm) is fitted or stored in the original cassette mounted on the cassette base. The original is read to obtain the whole image data by a transmission type or a reflection type image sensor without catching any flare, and an auxiliary scanning is done sequentially on lines of the original, reading whole surface thereof, so as to output directly the mask plates of C,M,Y and black (K). Because of these procedure described above the operation to produce the mask plates is easily done at a high speed by even an unskilled operator. The operation for scanning the original image comprises two steps of scnning (pre-scanning) the original image in rough and scanning (main scanning) it in detail. The original image is displayed in accordance with data of the pre-scanning and the data of the pre-scanning is stored in a memory. On the basis of the stored data, the condition parameters for the image processing are determined automatically (or manually) and the image output is carried out at a high speed and high efficiency by judging the relationship which is provided by the condition parameters, between the original and the photosensitive material so as to make remarkable improvement in producing the printing mask plates.

Inventors

  • 👤 Tadashi Miyakawa
  • 👤 Shinji Ito

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-07 18:08
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/0035; H04N1/00405; H04N1/00408; H04N1/00413; H04N1/00411; H04N1/00466; H04N1/00469; H04N1/00477; H04N1/00567; H04N1/024; H04N1/028; H04N1/03; H04N1/387; H04N1/3872; H04N1/3873; H04N1/3875; H04N1/46; H04N1/56; H04N1/60; H04N1/6011; H04N2201/00; H04N2201/024; H04N2201/02493

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 155 words
A color scanner of a flat bed type, where an original received on an original cassette is read optically by plane scanning and where the read data is suitably processed and recorded on a photosensitive material to make a halftoned film or a printing mask plate, comprising the steps of; performing said plane scanning by pre-scanning for rough scanning and main scanning for detailed scanning, storing the read data obtained from said pre-scanning in a memory portion, displaying an image of said original image on a display portion according to instructions, automatically or manually setting condition parameters for data processing by using said stored data, processing the read data of said main scanning on the basis of said condition parameters, and carrying out an output image at a high speed and effectively by evaluating a relationship between said original and said photosensitive material so as to produce said halftoned film or said printing mask plates.
Claim 2
Dependent Claim 155 words
A color scanner of a flat bed type, where an original received on an original cassette is read optically by plane scanning and where the read data is suitably processed and recorded on a photosensitive material to make a halftoned film or a printing mask plate, comprising the steps of; performing said plane scanning by pre-scanning for rough scanning and main scanning for detailed scanning, storing the read data obtained from said pre-scanning in a memory portion, displaying an image of said original image on a display portion according to instructions, automatically or manually setting condition parameters for data processing by using said stored data, processing the read data of said main scanning on the basis of said condition parameters, and carrying out an output image at a high speed and effectively by evaluating a relationship between said original and said photosensitive material so as to produce said halftoned film or said printing mask plates.
Claim 3
Dependent Claim 39 words
A color scanner as set forth in Claim 1 further including the step of automatically adjusting a magnification in response to a reading range trimmed on an image frame of said pre-scanning when the main scanning is carried out.
Claim 4
Dependent Claim 60 words
A color scanner as set forth in Claim 1 further including the steps of reading a full frame of the original cassette at a time on a fixed magnification without depending on the size of said original and electri­cally adjusting a resolution of scanning by identifying the size of said original according to a marker attached to said original cassette.
Claim 5
Dependent Claim 35 words
A color scanner as set forth in Claim 1, wherein said optical reading is performed through a slit member having different width slits and said slit member is capable of moving to a suit position.
Claim 6
Dependent Claim 37 words
A color scanner as set forth in Claim 1, wherein said display of the image is done on a display portion in part of a display unit and image processing conditions are displayed on another part thereof.
Claim 7
Dependent Claim 37 words
A color scanner as set forth in Claim 5, wherein image processing operations for a plurality of any points on the displayed image are performed by simulation so as to display the results on the another part.
Claim 8
Dependent Claim 42 words
A color scanner as set forth in Claim 6, wherein displayed image processing conditions are re-written on real-time if the condition parameters are changed, and said image is displayed by electronically enlarging the original image so as to attain a maximum resolution.

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