JPS61121449U - - Google Patents
Info
- Publication number
- JPS61121449U JPS61121449U JP449485U JP449485U JPS61121449U JP S61121449 U JPS61121449 U JP S61121449U JP 449485 U JP449485 U JP 449485U JP 449485 U JP449485 U JP 449485U JP S61121449 U JPS61121449 U JP S61121449U
- Authority
- JP
- Japan
- Prior art keywords
- color
- area ratio
- light
- sample
- color information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000003086 colorant Substances 0.000 claims 1
- 238000005286 illumination Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Facsimile Image Signal Circuits (AREA)
Description
第１図は本考案の概念図、第２図ａ，ｂ，ｃ，
ｄは色測定手段の実施態様の説明図、第３図は色
情報―網点面積率変換テーブルの説明図である。
１…色見本、１０…第１の記憶手段、２０…色
濃度測定手段、２１…光源（Ｌ．Ｅ．Ｄ．）、２
２…光電変換素子、２１Ｒ…Ｒ発光Ｌ．Ｅ．Ｄ．
、２３…アンプ、２１Ｇ…Ｇ発光Ｌ．Ｅ．Ｄ．、
２４…補正回路、２１Ｂ…Ｂ発光Ｌ．Ｅ．Ｄ．、
２５…対数変換器、２６…Ａ／Ｄコンバーター、
３０…第２の記憶手段、４０…色濃度選択手段、
５０…網点面積率補間手段、６０…網点面積率出
力手段。
Figure 1 is a conceptual diagram of the present invention, Figure 2 a, b, c,
d is an explanatory diagram of an embodiment of the color measuring means, and FIG. 3 is an explanatory diagram of a color information-dot area ratio conversion table. DESCRIPTION OF SYMBOLS 1... Color sample, 10... First storage means, 20... Color density measuring means, 21... Light source (L.E.D.), 2
2...Photoelectric conversion element, 21R...R light emitting L. E. D.
, 23...Amplifier, 21G...G light emitting L. E. D. ,
24...Correction circuit, 21B...B light emission L. E. D. ,
25... Logarithmic converter, 26... A/D converter,
30... second storage means, 40... color density selection means,
50...Dot area ratio interpolation means, 60...Dot area ratio output means.
Claims (1)
の色情報と予め作成された記憶されている色情報
―網点面積率変換テーブルとに基づき色見本で指
定された色を印刷にて再現することのできる各色
色分解版の網点面積率を決定する装置において、
赤色光、緑色光、青色光を順次発光し、前記色見
本を照明する光源を設け、色見本からの前記各色
照明光の反射光を均等に受光できる位置に単一の
光電変換素子を設けたことを特徴とする網点面積
率決定装置。 (2) 前記発光源が赤色発光Ｌ．Ｅ．Ｄ緑色発光
、Ｌ．Ｅ．Ｄ、青色発光Ｌ．Ｅ．Ｄからなる実用
新案登録請求の範囲第１項記載の網点面積率決定
装置。[Scope of Claim for Utility Model Registration] (1) Obtain color information by optically measuring a color sample, and obtain color information based on this color information and a previously created and stored color information-dot area ratio conversion table. In a device that determines the halftone area ratio of each color separation plate that can reproduce the colors specified in the sample in printing,
A light source that sequentially emits red light, green light, and blue light to illuminate the color sample is provided, and a single photoelectric conversion element is provided at a position where it can equally receive the reflected light of each color illumination light from the color sample. A dot area ratio determining device characterized by: (2) The light emitting source is a red light emitting L. E. D green emission, L. E. D. Blue light emitting L. E. A dot area ratio determination device according to claim 1 of the utility model registration claim consisting of D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP449485U JPS61121449U (en) | 1985-01-17 | 1985-01-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP449485U JPS61121449U (en) | 1985-01-17 | 1985-01-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61121449U true JPS61121449U (en) | 1986-07-31 |
Family
ID=30480124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP449485U Pending JPS61121449U (en) | 1985-01-17 | 1985-01-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61121449U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5994759A (en) * | 1982-11-22 | 1984-05-31 | Toppan Printing Co Ltd | Deciding device for area rate of dot |
| JPS59189364A (en) * | 1983-04-13 | 1984-10-26 | Fuji Xerox Co Ltd | Scanning exposure device of color copying machine |
-
1985
- 1985-01-17 JP JP449485U patent/JPS61121449U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5994759A (en) * | 1982-11-22 | 1984-05-31 | Toppan Printing Co Ltd | Deciding device for area rate of dot |
| JPS59189364A (en) * | 1983-04-13 | 1984-10-26 | Fuji Xerox Co Ltd | Scanning exposure device of color copying machine |
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