KR970020437A - Inkjet printer - Google Patents
Inkjet printer Download PDFInfo
- Publication number
- KR970020437A KR970020437A KR1019950037028A KR19950037028A KR970020437A KR 970020437 A KR970020437 A KR 970020437A KR 1019950037028 A KR1019950037028 A KR 1019950037028A KR 19950037028 A KR19950037028 A KR 19950037028A KR 970020437 A KR970020437 A KR 970020437A
- Authority
- KR
- South Korea
- Prior art keywords
- value
- color
- gradation
- image
- recording medium
- Prior art date
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
- 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
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/04508—Control methods or devices therefor, e.g. driver circuits, control circuits aiming at correcting other parameters
Landscapes
- Facsimile Image Signal Circuits (AREA)
- Ink Jet (AREA)
Abstract
목적 : 컬러복제 화상의 제작에 있어서 종래 기술에서는 곤란하였던 제조의 조정과 색조의 조정을 통합(융합)한 새로운 색분해 기술을 짜 넣은 잉크젯트 프린터를 제공한다.PURPOSE: To provide an inkjet printer incorporating a new color separation technology incorporating (fusion) adjustment of manufacturing and color adjustment, which have been difficult in the prior art in producing color reproduction images.
구성 : 잉크젯트 프린터의 계조변환부가 (1) 컬러원고 화상을 기록하고 있는 기록매체의 특성곡선[기록매체에 입사되는 광량치(X치)와 기록매체상에서 형성되는 농도치(D치)와의 관계를 D-X 직교좌표계에서 규정하는 특성곡선]을 이용하여 농도치(D치)로부터 광량치(X치)를 구하는 단계와 (2) 상기 광량치(X치)를 하기(계조변환식)을 이용해서 계조변환 하고 계조강도치(yn치)를 구하는 단계 및, (3) 상기 계조변환시에 사용되는 색조 조정단계가 (3-1) 컬러원고 화상의 H부(최명부)-S부(최암부)의 사이의 소정부위에 있어서 컬러복제 화상의 색조를 관리하기 위한 색조관리포인트(M1)를 설정하는 단계와 (3-2) 상기 색조관리포인트(M1)에 있어서 색조의 조정 조건이 소망하는 색판(C판, M판, Y판 및, BL판)의 계조강도치로 규정하는 단계와 (3-3) 상기 색조관리포인트(M1)에 있어서의 광량치와 상기 색조의 조정 조건을 반영한 색판의 계조강도치, 및 H부와 S부에 설정하는 소망의 계조강도치를 하기(계조변환식)에 대입하여 R치를 결정하고 상기 색판의 H부-S부에 이르는 화소의 광량치를 계조강도치(yn치)로 변환 하기 위한 <계조변환식>을 준비하는 단계와 (3-4) 상기 r치가 결정된 각색판용의 <계조변환식>을 이용하여 각색판용의 각화소의 광량치를 계조 변환하는 것과 함께 색조를 관리 조정하는 단계와로 구성되어 색조조정을 하는 것임을 특징으로 하는 잉크젯트 프린터.Composition: The gradation conversion unit of an inkjet printer (1) shows the relationship between the characteristic curve of the recording medium (X value) incident on the recording medium and the density value (D value) formed on the recording medium. Calculating the light quantity value (X value) from the density value (D value) using the characteristic curve defined in the DX rectangular coordinate system; and (2) the light quantity value (X value) using the following (gradation conversion formula). The step of obtaining the gradation intensity value (y n value), and (3) the hue adjustment step used in the gradation conversion are (3-1) between the H part (the lightest part) and the S part (the darkest part) of the color document image. Setting a color tone management point (M 1 ) for managing the color tone of the color reproduction image at a predetermined portion; and (3-2) a color plate (C) for which color tone adjustment conditions are desired at the color tone management point (M 1 ). (3-3) the color tone management point ( M 1 ) is substituted for the gradation intensity value of the color plate reflecting the light intensity value and the hue adjustment condition, and the desired gradation intensity value set in the H and S portions to the following (gradation conversion formula) to determine the R value and the color plate. Preparing a <gradation conversion equation> for converting the light quantity of the pixel from the H part to the S part of the part to the gradation intensity value (y n value), and (3-4) <gradation conversion equation> for each color plate whose r value is determined. And a step of controlling and adjusting the color tone by converting the light quantity value of each pixel for each color plate by using the inkjet printer.
<계조변환식><Gradation conversion>
yn= yH+[α(1-10-kx) (ys-yH)/(α-β)]y n = y H + [α (1-10 -kx ) (y s -y H ) / (α-β)]
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제2도는 본 발명의 제1실시예의 잉크젯트 프린터 블럭도이다.2 is a block diagram of an ink jet printer of a first embodiment of the present invention.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950037028A KR0156295B1 (en) | 1995-10-25 | 1995-10-25 | Ink jet printer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950037028A KR0156295B1 (en) | 1995-10-25 | 1995-10-25 | Ink jet printer |
Publications (2)
Publication Number | Publication Date |
---|---|
KR970020437A true KR970020437A (en) | 1997-05-28 |
KR0156295B1 KR0156295B1 (en) | 1998-12-01 |
Family
ID=19431229
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950037028A KR0156295B1 (en) | 1995-10-25 | 1995-10-25 | Ink jet printer |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR0156295B1 (en) |
-
1995
- 1995-10-25 KR KR1019950037028A patent/KR0156295B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR0156295B1 (en) | 1998-12-01 |
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