JPS59201862A - Formation of color image - Google Patents

Formation of color image

Info

Publication number
JPS59201862A
JPS59201862A JP7585783A JP7585783A JPS59201862A JP S59201862 A JPS59201862 A JP S59201862A JP 7585783 A JP7585783 A JP 7585783A JP 7585783 A JP7585783 A JP 7585783A JP S59201862 A JPS59201862 A JP S59201862A
Authority
JP
Japan
Prior art keywords
yellow
color
cyan
ink
magenta
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.)
Granted
Application number
JP7585783A
Other languages
Japanese (ja)
Other versions
JPH0223352B2 (en
Inventor
Taku Sasaki
卓 佐々木
Nobuaki Sakurada
櫻田　信晶
Hideaki Kawamura
秀明 河村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP7585783A priority Critical patent/JPS59201862A/en
Priority to GB08405773A priority patent/GB2139450B/en
Priority to FR8403547A priority patent/FR2542256B1/en
Priority to DE3448359A priority patent/DE3448359C2/en
Priority to DE19843408545 priority patent/DE3408545A1/en
Publication of JPS59201862A publication Critical patent/JPS59201862A/en
Priority to US07/212,097 priority patent/US4959659A/en
Publication of JPH0223352B2 publication Critical patent/JPH0223352B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J17/00—Mechanisms for manipulating page-width impression-transfer material, e.g. carbon paper
    • B41J17/22—Supply arrangements for webs of impression-transfer material
    • B41J17/24—Webs supplied from reels or spools attached to the machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/205—Ink jet for printing a discrete number of tones
    • B41J2/2056—Ink jet for printing a discrete number of tones by ink density change

Landscapes

  • Ink Jet (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Color, Gradation (AREA)

Abstract

PURPOSE:To simplify the equipment while preventing the generation of a false contour by representing the number of kind in the concentration of colors, yellow, magenta and cyan by NY, NM and NC to meet the relationship of NM, NC>NY. CONSTITUTION:Various digital signals from a line memory are converted to a concentration data of YMC with a converter 101 and then, into gamma with a converter 102. A colorless component K as YMC common component is obtained with a ground color removing circuit 103 to be subtracted from the YMC and effect attributed to a turbidity component of an ink is removed with a color correction circuit 104. Then, a voltage signals which are to be outputted to reference tables 105-106 of colors and applied to a head according to the density are outputted to drivers for YMC and black heads in yellow as YU' and YK', in magenta as MU'-MK', in cyan as CU'-CK' and K' as intact respectively. Thus, as many kinds of concentrations are prepared, highly sensitive colors M and C can prevent the generation of a false contour and the simplification of the equipment is possible because of limited kinds of the color Y.

Description

【発明の詳細な説明】 く技術分野〉 本発明（弓：カラー画像を形成するカラー画像形成方法
に１３’Ｊ　Ｌ／　、’■に階調性、及び色再現性に１
２れたカラー画像形成方法に関する。[Detailed Description of the Invention] Technical Field> The present invention (bow: 13'J L/ for a color image forming method for forming a color image, 1 for gradation, and 1 for color reproducibility)
The present invention relates to a color image forming method.

本発明は、インクジェットプリンタ、サーマル転写プリ
ンタ、電子写真プリンタ等種々のプリンタに適用可能で
あるが、本明細書ではカラーインクジェットプリンタを
例にして以下説明する。Although the present invention is applicable to various printers such as inkjet printers, thermal transfer printers, and electrophotographic printers, the present invention will be described below using a color inkjet printer as an example.

〈従来技術〉 カラー画像形成のためには、一般に少なくともシアン、
マゼノク、イエロの３種類のインクを使用し、画素ごと
のデータに応じて各色の濃度や打ち方を制御することか
行なわれる。<Prior art> For color image formation, generally at least cyan,
Three types of ink, mazenoku and yellow, are used, and the density and printing method of each color is controlled according to data for each pixel.

良好な画質を得るだめには、シアン、−７ゼンタ、イエ
ロの各色について［１コ広い階調レンジを持つことが必
要であり、このために各色の濃度の異なるインクを使用
する方法か提案されている。かかる方法によれば第１図
に示す如く広範囲の階調を得ることができる０ しかしながら、この方法においては濃度の異たるインク
を切り換えて使用するため濃淡インクのつなぎ目の部分
で擬似輪郭か発生してしまうという問題点があった。To obtain good image quality, it is necessary to have a wide gradation range for each of the colors cyan, -7 zenta, and yellow. ing. According to this method, it is possible to obtain a wide range of gradations as shown in FIG. 1.However, in this method, since inks of different densities are switched and used, false contours may occur at the joints of dark and light inks. There was a problem with this.

そこで第２図に示す如く、各濃度のインク間の濃度差を
小さくすれば擬似輪郭の発生を防止する事が可能となる
が、今度は再現できる階調幅が狭くなる。Therefore, as shown in FIG. 2, if the difference in density between inks of each density is reduced, it is possible to prevent the occurrence of false contours, but this will narrow the range of gradations that can be reproduced.

これを解決するため、第３図のようにインクの濃度のａ
順を多くすることによって、巾広い階調性を得、かつ擬
似輪郭を防止することができるが、この場合、必要なヘ
ッドの数が増え、それに応じて必要なヘッドドライバの
数が増え、ま／ζ、画像処理も複雑になってしまい、装
置のコストが高くなってしまう。また、ヘッドの信頼性
を考えると、この種の方法においては、どのひとつのヘ
ッドのトラブルも画像上致命的となるので、その数はな
るべく少なくすることが望１れている。In order to solve this problem, as shown in Figure 3, the concentration of the ink is
By increasing the order, it is possible to obtain a wide range of gradations and prevent false contours, but in this case, the number of heads required increases, and the number of head drivers required increases accordingly. /ζ, image processing becomes complicated and the cost of the device increases. Furthermore, considering the reliability of the heads, in this type of method, any trouble in any one head will be fatal to the image, so it is desirable to reduce the number of troubles as much as possible.

つまり、画質上はなるべくたくさんの濃度の異なるイン
クを用いた方が望ましいが、装置コストや信＊Ｊ’４　
件の面からみると使用するインクの数はなるべく少ない
方が望ましいのである。In other words, it is desirable to use inks with as many different densities as possible in terms of image quality, but it also reduces equipment cost and reliability.
From this point of view, it is desirable to use as few inks as possible.

〈発明の目的〉 本発明の目的は上記の点にかんがみ、画質上も充分満足
でき、かつ、装置のコストや信頼性を考えても実用化が
可能なカラー画像形成方法を提供することにある。<Object of the Invention> In view of the above points, the object of the present invention is to provide a color image forming method which is sufficiently satisfactory in terms of image quality and which can be put into practical use considering the cost and reliability of the apparatus. .

〈発明の背景〉 又、第４図に示す如く、湿度が徐々に変化する領域にお
いて、濃ドツト（＠）と淡ドツト（○）の境目が存在す
る場合、反射光学濃度（以下、ＯＤ値）としては連続し
ているか、淡ドツトは大きな面積、濃ドツトは小さな面
積をもつ為、境目において視覚上不自然となシ擬似輪郭
を与える。又、濃い小さなドツトは目に対する刺激が強
いので、ざらつき感を与える。<Background of the Invention> Furthermore, as shown in Fig. 4, in a region where the humidity gradually changes, if there is a boundary between dark dots (@) and light dots (○), the reflected optical density (hereinafter referred to as OD value) Since the dots are continuous, or the light dots have a large area and the dark dots have a small area, a visually unnatural pseudo-contour is created at the boundary. In addition, small, dark dots are highly irritating to the eyes, giving a sense of roughness.

一方、よく知られているように人間の目の解像度は色に
よって異なる。前述のようなドツト径の差、あるいは濃
いインクの小ドツトからくるざらつき感に対する感じ方
も、当然その色に対する解像度に依存しておシ、解像度
が高い色はど、ドツト径の差やざらつき感が目立ちやす
い。ところでブルーに対する解像度はグリーン。On the other hand, as is well known, the resolution of the human eye varies depending on the color. The difference in dot diameter as mentioned above, or how you feel about the roughness caused by small dots of dark ink, naturally depends on the resolution of that color. is easily noticeable. By the way, the resolution for blue is green.

レッドに比して低く、シアン、マゼンタ、イエロ！ｄ　
谷々、レッド、グリーン、フル−をコントロールするイ
ンクであるからイエロに対する解１マ度もシアン、マゼ
ンタに比して低いＯ即ち、シアン、マゼンタの境目はイ
エロの境目に比して目立たないと言える。Lower than red, cyan, magenta, yellow! d
Since it is an ink that controls valleys, red, green, and fullness, the solution to yellow is O, which is lower than cyan and magenta.In other words, the boundary between cyan and magenta is less noticeable than the boundary between yellow. I can say it.

実１県に我々は第４図に示す如きノくターンをシアン、
マゼンタ、イエロ各色について形成して見た。このとき
勿論各インクで形成さｆする濃度は同じｌ・ソト径に対
して同じＯＤ値か得られる様に１．’、Ｉ緊した。In fact, in the first prefecture, we made a turn as shown in Figure 4.
It was formed for each color, magenta and yellow. At this time, of course, the density formed by each ink is set to 1.0 so that the same OD value can be obtained for the same l/soto diameter. ', I was nervous.

ぞめ結果、イエロの境目に比べてマゼンタ。The results are magenta compared to the yellow border.

シアンの力が不自然さを覚える事が確認された。It has been confirmed that Cyan's power feels unnatural.

この事からイエローインクのみ度の種類の数をシアン、
マゼンタに比べて少くしても良好な画質が得られる沖が
推量される。From this, the number of types of yellow ink can be changed to cyan,
Oki is presumed to be able to obtain good image quality even with a smaller amount than magenta.

く実施例の説明〉 本”Ａ　ｈｉｉｉ　ｆｉＪにおいてはイエロについては
２種の濃度のインクを用い、マゼンタ、シアンについて
は３種の濃度のインクを用いた。イエロは染料濃度０．
５’％のインクＹＵと４チのインクＹＫを用い、そのド
ツト径とＯＤ値との関係を第５図に示した。Explanation of Examples In this book "A hiii fiJ", inks with two different densities were used for yellow, and inks with three densities were used for magenta and cyan. For yellow, the dye density was 0.
FIG. 5 shows the relationship between the dot diameter and the OD value using 5'% ink YU and 4 ink YK.

マゼンタは染料濃度０．２チのインクＭＵ、０．７％の
インクＭＴ、３％のインクＭＫ、シアンは染料濃度０３
チのインクＣＵ、０．７％のインクＣＴ。Magenta is ink MU with dye density 0.2, ink MT is 0.7%, ink MK is 3%, and cyan is dye density 03.
Ink CU of 1, ink CT of 0.7%.

２．０チのインクＣＫを夫々用い、第６図、第７図にド
ツト径とＯＤ値の関係を示した。そしてＹ　ＵからＹＫ
への切換ポイン）ＬｌをＯＤ値で０．３４．ＭＵからＭ
ＴはＬ２＝０．２８．ＭＴからＭ　ＫはＬ３＝０．４８
．ＣＵからＣＴはＬ４＝０．２８．ＣＴからＣＫはＬ５
＝０．５８と設定した。6 and 7 show the relationship between dot diameter and OD value using 2.0 inch ink CK. And from YU to YK
(switching point) Ll to OD value of 0.34. MU to M
T is L2=0.28. MT to MK is L3=0.48
．． From CU to CT L4=0.28. CT to CK is L5
=0.58.

このように構成することにより、シアン、マゼンタにお
いてはインクの切換ポイントにおける濃度差が小さくな
り、擬似輪郭の発生が押えられ、更に小さな濃ドツトを
使用しない為画像から受けるざらつき等もなくなる。又
、イエロについてはある程度の濃度差があっても目立た
ない。With this configuration, the density difference at the ink switching point for cyan and magenta is reduced, suppressing the occurrence of false contours, and furthermore, since small dark dots are not used, roughness etc. from the image is also eliminated. Furthermore, even if there is a certain degree of density difference in yellow, it is not noticeable.

次に本実施例を実現する為のインクジェット記録装置の
制御ブロック図を示す。ＲＧＢ各色信号及び同期信号を
含んだビデオ信号■Ｓはサンプルホールド回路８１で各
色信号毎に同期信号より得られるサンプル信号でサンプ
リングされ、Ａル変換器８２に出力される。％変換器８
２はＲ，Ｇ、Ｂ各色信号を階調を示すデジタル信号に変
換し、得られた信号は所定のライン数分記憶する。Next, a control block diagram of an inkjet recording apparatus for realizing this embodiment is shown. A video signal S containing RGB color signals and a synchronization signal is sampled by a sample hold circuit 81 using a sample signal obtained from the synchronization signal for each color signal, and is output to an A converter 82. % converter 8
2 converts the R, G, and B color signals into digital signals indicating gradation, and stores the obtained signals for a predetermined number of lines.

そしてラインメモリ８３のデータは後で詳述する画像処
理回路８４により、各インクジェットヘッドを駆動する
デジタル信号に変換される。The data in the line memory 83 is then converted into digital signals for driving each inkjet head by an image processing circuit 84, which will be described in detail later.

該デジタル信号はへ変換器８６でアナログ信号に変換さ
れ、ドライバ８９を介して各インクジェットヘッド９２
を駆動する。The digital signal is converted into an analog signal by a converter 86, and then sent to each inkjet head 92 via a driver 89.
to drive.

本実施例においてはヘッド９２はイエロ濃インクＹＫ、
　イエロ淡インクＹＵ、ＭＵ、ＩＶＩＴ。In this embodiment, the head 92 is made of yellow dark ink YK.
Yellow light ink YU, MU, IVIT.

ＭＫ、ＣＵ、ＣＴ、ＣＫの各インク用の個別ヘッドによ
り構成され、Ｙ、Ｍ、Ｃによりブラックを表現するとイ
ンクが惨み、純粋ブラックが表現できないので、更にブ
ラックインク用のヘッドも設けられる。インクジェット
ヘッドとしては印加電圧に応じてその吐出量が変化する
ピエゾ電気素子を用いたヘッドが用いられる。例えば特
公昭５１−３９４９５号に記載の如き一＼ツドが有効で
ある。It is composed of individual heads for each ink of MK, CU, CT, and CK, and since expressing black using Y, M, and C causes the ink to deteriorate and cannot express pure black, a head for black ink is also provided. As the inkjet head, a head using a piezoelectric element whose ejection amount changes depending on the applied voltage is used. For example, the method described in Japanese Patent Publication No. 51-39495 is effective.

一方、７”リンクのシーケンスをコントロールするシス
テムコントローラ８５により入力ビデオ信号に対応する
タイミングで、ヘッドドライブ信号とキャリッジモータ
駆動信号、紙送り信号が発生させられ、それぞれヘッド
ドライバ８６、キャリッジモータドライバ８７、紙送シ
モータドライバ８８に供給され、所期のタイミングでイ
ンクジェットヘッド９２及びキャリッジモータ及びその
メカニズム９０７紙送シモータ及びそのメカニズム９１
が制御され、入力ビデオ信号の再生画像を記録媒体に印
写せしめる。On the other hand, a system controller 85 that controls the 7" link sequence generates a head drive signal, a carriage motor drive signal, and a paper feed signal at a timing corresponding to the input video signal, and generates a head drive signal, a carriage motor driver 87, and a paper feed signal, respectively. The paper feed shimo motor driver 88 is supplied to the inkjet head 92 and the carriage motor and its mechanism 907 and the paper feed shimo motor and its mechanism 91 at the desired timing.
is controlled to print the reproduced image of the input video signal on the recording medium.

次に第９図を用いて第８図の画像処理部８４の動作を説
明する。ラインメモリ８３がらの各色のデジタル信号は
ＹＭＣ変換器１０１でＹＭＣの４廚度データに袈換され
、更にγ変換器１０２でγ変換される。そして下色除去
回路１０３にてＭ　Ｍ　Ｃの共通成分即ち無彩色成分Ｋ
を得て、ＭＭＣより無彩色成分が差し引かちれる。次に
色補正回路１０４にてマスキング処理されてインクの濁
り成分による影響を取り除く。Next, the operation of the image processing section 84 shown in FIG. 8 will be explained using FIG. 9. The digital signals of each color from the line memory 83 are converted into YMC 4-degree data by a YMC converter 101, and further subjected to γ conversion by a γ converter 102. Then, in the under color removal circuit 103, the common component of MMC, that is, the achromatic color component K
The achromatic color component is subtracted from MMC. Next, the color correction circuit 104 performs a masking process to remove the influence of cloudy components of the ink.

そしてイエロのデジタル値はイエロ参照テーブル１０５
に入力され、テーブル１０５は入力デジタル値に応じて
淡インクを用いるか、濃インクを用いるかを判別すると
共に、各インク用ヘッドに印加する電圧値を示すデジタ
ル信号ＹＴＪ”　、　ＹＫを出力する。同様にマセンタ
診照テーブル１０６はＭＵ　、　ＭＴ　、　ＭＫを、シ
アン参照テーブル１０７はＣＵ　、　ＣＴ　、　ＣＫを
出力する。又、無彩色成分にはそのままブラックヘッド
用ドライバに％変換器８６を介して出力される。同様に
他のデジタル信号も弘変換器８６　　　・を介して各ヘ
ッド用ドライバに出力される。And the digital value of yellow is yellow reference table 105
The table 105 determines whether to use light ink or dark ink according to the input digital value, and outputs digital signals YTJ'' and YK indicating the voltage value to be applied to each ink head. Similarly, the macenta diagnostic table 106 outputs MU, MT, MK, and the cyan reference table 107 outputs CU, CT, CK.Also, the achromatic color component is output as is to the black head driver via the % converter 86. Similarly, other digital signals are also outputted to each head driver via the Hiroshi converter 86.

以上説明した如く本実施例によれば、人間の目に対する
感度の高いマゼンタ、シアンについては多数種の濃度の
インクを用いているので濃度差による擬似輪郭の発生を
防止できると共に、各色の最も濃いインクの最小ドツト
径は第５〜７図に示す如く、イエロよりもマゼンタ、シ
アンの方が太きい。従って、一般に濃いインクの小さな
ドツトを使用した場合に生じるざらつき感も同時に改善
される。As explained above, according to this embodiment, for magenta and cyan, which are highly sensitive to the human eye, inks with various densities are used, so it is possible to prevent the occurrence of false contours due to density differences, and As shown in FIGS. 5 to 7, the minimum dot diameter of ink is larger for magenta and cyan than for yellow. Therefore, the roughness that generally occurs when using small dots of dark ink is also improved.

る。Ru.

尚、本実施例においてはドツトのサイズを変調すること
により階調性の再現及び色再現を行うタイプのプリンタ
を例にして説明しだが、所定面積内に占める着色面積を
制御しうるプリンタ、即ち、ディザ法あるいは網点法等
の密度変調を行うタイプのプリンタについても適用しう
る。In this embodiment, a type of printer that reproduces gradation and color by modulating the dot size is used as an example, but a printer that can control the colored area occupied within a predetermined area, that is The present invention can also be applied to printers that perform density modulation such as , dither method, halftone method, or the like.

て効果の説明〉 以上の如く、本発明はイエロ、マゼンタ、シアン３色を
用い、上記３色のうち少くとも１色について核数験度の
着色材を用いる場合、イエロ、マゼンタ、シアン各色の
濃度の？ｉ２類の数をＮＹ　＋　ＮＭ　＋　Ｎｃ　とし
た時、夫々の大小関係がＮ、、、　。As described above, the present invention uses three colors of yellow, magenta, and cyan, and when using a coloring material with a nuclear degree for at least one of the three colors, the effects of yellow, magenta, and cyan are Of concentration? When the number of i2 class is NY + NM + Nc, the size relationship of each is N,...

Ｎｃ＞ＮＹと設定したので、特に人間の目に対するＪＶ
ｊ像度が高いマゼンタ、シアンにおける濃淡着色材の境
目で擬似輪郭が発生するのを防止できると共に、イエロ
の着色材の種類がシアン。Since Nc>NY is set, JV especially for human eyes
It is possible to prevent false contours from occurring at the boundary between the dark and light coloring materials in magenta and cyan, which have high image clarity, and the type of coloring material used in yellow is cyan.

マゼンタに比して少く設定されるので全体の着色材の種
類も制限され、例えはインクジェットヘッドを用いた場
合、ヘッドの本数も制限され、装置全体としても簡略化
され、信ｇ！ｆＩ性の同上。Since it is set in a smaller amount than magenta, the overall type of coloring material is also limited, and for example, when an inkjet head is used, the number of heads is also limited, and the entire device is simplified, giving confidence! Ditto for fI nature.

コストの低減化等も計れるものである。又、本発明をド
ツトの大きさを変調することにより階調性を再現するタ
イプのプリンタに適用したｌ場合（・ではシアン、マゼ
ンタの濃い着色材のＴ＋’ｆも小きなドツトの犬ききも
イエロのそれよシも大きく設定さｈるので一般に乞い着
色材の小さなドツトを使用した場合に生じる目に対する
ざらつき感も同時に改善される。It is also possible to reduce costs. In addition, when the present invention is applied to a type of printer that reproduces gradation by modulating the size of dots (in this case, T+'f of cyan and magenta dark coloring materials also has a small dot size). Since both the yellow color and the yellow color are set large, the roughness to the eyes, which generally occurs when using small dots of coloring material, is also improved.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図、第２図、第３図は各濃度のインクドツト径とＯ
Ｄ値との関係を示す図、第４図は濃ドツト、淡ドツトの
境目におけるパターンを示す図、第５図、第６図、第７
図は本実施例に用いたインクのドツト径とＯＤ値の関係
を夫々イエロ、マセンタ、シアン　各色について示した
図、第８図は本実施例のインクジェットプリンタの制御
回路図、第９図は第８図の画像処理回路８４の詳細ブロ
ック図である。 図において８４は画像処理回路、８６は％変換器、８９
はヘッドドライバ、９２はインクジェットヘッド、１０
５，１０６．１０７は夫々イエロ、マゼンタ、シアンの
参照テーブルを鳴必示す。 出願人　　キャノン株式会社 ＥＰｆｆ＋］Ｆ′ッ￥硲 ＥμｒｎＨ″訃径 ｒｐｍコ　ド’、、、ＬＧ 、１１　　　　　　　　１度欠Figures 1, 2, and 3 show the ink dot diameter and O for each density.
A diagram showing the relationship with the D value, Figure 4 is a diagram showing the pattern at the boundary between dark dots and light dots, Figures 5, 6, and 7.
The figure shows the relationship between the dot diameter and OD value of the ink used in this example for each color of yellow, magenta, and cyan, Figure 8 is a control circuit diagram of the inkjet printer of this example, and Figure 9 is a diagram showing the relationship between the dot diameter and OD value of the ink used in this example. 9 is a detailed block diagram of the image processing circuit 84 shown in FIG. 8. FIG. In the figure, 84 is an image processing circuit, 86 is a % converter, and 89
is a head driver, 92 is an inkjet head, 10
5, 106, and 107 show the reference tables for yellow, magenta, and cyan, respectively. Applicant: Canon Co., Ltd.

Claims (2)

【特許請求の範囲】[Claims] （１）　　少くともイエロ、マゼンク、シアン３色を用
い、上り己３色のうち少くとも１色について複数濃度の
着色材を用いるカラーｒｉ″！ｉ像形成方法において、
イエロ、マセンタ、シアン各色のに２度の社類の数をＮ
Ｙ　Ｉ　Ｎ、＜　＋　ＮＣとした時夫々の大小１月係が
ＮＭ、　Ｎｏ＞　ＮＹである事を特徴とするカラー画像
形成方法。(1) In a color ri''!i image forming method using at least three colors of yellow, magenta, and cyan, and using a coloring material with multiple concentrations for at least one of the three colors,
The number of companies with 2 degrees for each color of yellow, macenta, and cyan is N.
A color image forming method characterized in that when Y I N, < + NC, the respective magnitudes are NM and No > NY. （２）特許ｊｊｆＪｌ求の範囲第１項において前記各着
色材はその記６’Ｊ　爪上のサイズによって階調性及び
色相の再現が行われることを４ｆ徴とするカラーｊｊｊ
ｌｊ像形成方法。(2) Scope of Patent Required In Paragraph 1, each of the above coloring materials is described in 6'J Colors whose 4F characteristic is that the gradation and hue are reproduced depending on the size on the nail.
lj image formation method.
JP7585783A 1983-03-08 1983-04-28 Formation of color image Granted JPS59201862A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP7585783A JPS59201862A (en) 1983-04-28 1983-04-28 Formation of color image
GB08405773A GB2139450B (en) 1983-03-08 1984-03-06 Color picture forming apparatus
FR8403547A FR2542256B1 (en) 1983-03-08 1984-03-07 COLOR IMAGE FORMING METHOD AND APPARATUS
DE3448359A DE3448359C2 (en) 1983-03-08 1984-03-08 Colour control suitable for ink jet printer
DE19843408545 DE3408545A1 (en) 1983-03-08 1984-03-08 METHOD AND DEVICE FOR PRODUCING COLORED IMAGES
US07/212,097 US4959659A (en) 1983-03-08 1988-06-27 Color picture forming apparatus and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7585783A JPS59201862A (en) 1983-04-28 1983-04-28 Formation of color image

Publications (2)

Publication Number Publication Date
JPS59201862A true JPS59201862A (en) 1984-11-15
JPH0223352B2 JPH0223352B2 (en) 1990-05-23

Family

ID=13588318

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7585783A Granted JPS59201862A (en) 1983-03-08 1983-04-28 Formation of color image

Country Status (1)

Country Link
JP (1) JPS59201862A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6411836A (en) * 1987-07-06 1989-01-17 Canon Kk Method of recording color gradation
JP2005178223A (en) * 2003-12-22 2005-07-07 Sony Corp Quantizer, printing control unit, printer, printing control method, program, recording medium, and data structure
JP2015042499A (en) * 2014-12-04 2015-03-05 セイコーエプソン株式会社 Printing apparatus and printing method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11320919A (en) * 1998-05-18 1999-11-24 Seiko Epson Corp Image output apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6411836A (en) * 1987-07-06 1989-01-17 Canon Kk Method of recording color gradation
JP2005178223A (en) * 2003-12-22 2005-07-07 Sony Corp Quantizer, printing control unit, printer, printing control method, program, recording medium, and data structure
JP4576833B2 (en) * 2003-12-22 2010-11-10 ソニー株式会社 Quantization apparatus, print control apparatus, printing apparatus, print control method, program, recording medium, and data structure
JP2015042499A (en) * 2014-12-04 2015-03-05 セイコーエプソン株式会社 Printing apparatus and printing method

Also Published As

Publication number Publication date
JPH0223352B2 (en) 1990-05-23

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