JP2007316154A5 - - Google Patents
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- JP2007316154A5 JP2007316154A5 JP2006143139A JP2006143139A JP2007316154A5 JP 2007316154 A5 JP2007316154 A5 JP 2007316154A5 JP 2006143139 A JP2006143139 A JP 2006143139A JP 2006143139 A JP2006143139 A JP 2006143139A JP 2007316154 A5 JP2007316154 A5 JP 2007316154A5
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- JP
- Japan
- Prior art keywords
- color
- correction
- color misregistration
- image forming
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- 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.)
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- 238000001514 detection method Methods 0.000 claims 3
Claims (2)
前記色ずれ量記憶手段から得られる色ずれ量に基づいて、色ずれ補正量を演算する色ずれ補正量演算手段と、
前記色ずれ補正量演算手段の演算結果に基づいて、前記複数の画像形成部の各画像形成部で形成された各色画像に対して画素単位の色ずれを補正する第１の補正手段と、
前記各色画像の少なくともエッジ部又は細線パターン部を検出する検出手段と、
前記検出手段で検出されたエッジ部又は細線パターン部における第１の画像データに対して、画素単位未満の色ずれを補正する第２の補正手段と、
前記エッジ部及び前記細線パターン部以外の前記各色画像における第２の画像データに対して、ハーフトーン処理を行うハーフトーン処理手段と、
前記第２の補正手段による補正処理後の前記第１の画像データに対して、階調補正処理を行う階調補正処理手段と
を有することを特徴とするカラー画像形成装置。 A color misregistration amount storage unit that stores the amount of color deviation definitive a plurality of image forming portions,
A color misregistration correction amount computing means for computing a color misregistration correction amount based on the color misregistration amount obtained from the color misregistration amount storage means;
First correction means for correcting color misregistration in pixel units for each color image formed in each image forming section of the plurality of image forming sections based on a calculation result of the color misregistration correction amount calculating means;
Detecting means for detecting at least an edge portion or a fine line pattern portion of each color image;
Second correction means for correcting color misregistration of less than a pixel unit with respect to the first image data in the edge portion or thin line pattern portion detected by the detection means;
Halftone processing means for performing halftone processing on the second image data in each color image other than the edge portion and the fine line pattern portion;
Wherein the second of said first image data after the correction processing by the correction means, a color image forming apparatus, characterized by chromatic and tone correction processing means for performing gradation correction processing.
前記色ずれ量記憶手段から得られる色ずれ量に基づいて、色ずれ補正量を演算する演算ステップと、
前記演算ステップの演算結果に基づいて、前記複数の画像形成部の各画像形成部で形成された各色画像に対して画素単位の色ずれを補正する第１の補正ステップと、
前記各色画像の少なくともエッジ部又は細線パターン部を検出する検出ステップと、
前記検出ステップで検出されたエッジ部又は細線パターン部における第１の画像データに対して、画素単位未満の色ずれを補正する第２の補正ステップと、
前記エッジ部及び前記細線パターン部以外の前記各色画像における第２の画像データに対して、ハーフトーン処理を行うハーフトーン処理ステップと、
前記第２の補正ステップによる補正処理後の前記第１の画像データに対して、階調補正処理を行う階調補正処理ステップと
を有することを特徴とするカラー画像形成方法。 A storage step of storing the amount of color deviation definitive a plurality of image forming portions to the color shift amount storage means,
A calculation step of calculating a color misregistration correction amount based on the color misregistration amount obtained from the color misregistration amount storage means;
A first correction step of correcting color misregistration in units of pixels for each color image formed by each image forming unit of the plurality of image forming units based on a calculation result of the calculation step;
A detection step of detecting at least an edge portion or a fine line pattern portion of each color image;
A second correction step for correcting a color shift of less than a pixel unit with respect to the first image data in the edge portion or the fine line pattern portion detected in the detection step;
A halftone processing step of performing halftone processing on the second image data in each color image other than the edge portion and the fine line pattern portion;
A gradation correction processing step for performing gradation correction processing on the first image data after the correction processing in the second correction step ;
Color image forming method characterized by having a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006143139A JP4898292B2 (en) | 2006-05-23 | 2006-05-23 | Image forming apparatus, image forming method, and program |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006143139A JP4898292B2 (en) | 2006-05-23 | 2006-05-23 | Image forming apparatus, image forming method, and program |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2007316154A JP2007316154A (en) | 2007-12-06 |
| JP2007316154A5 true JP2007316154A5 (en) | 2009-07-09 |
| JP4898292B2 JP4898292B2 (en) | 2012-03-14 |
Family
ID=38850094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006143139A Expired - Fee Related JP4898292B2 (en) | 2006-05-23 | 2006-05-23 | Image forming apparatus, image forming method, and program |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4898292B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6043081B2 (en) | 2012-04-06 | 2016-12-14 | キヤノン株式会社 | Image processing apparatus, image forming apparatus, and program |
| JP2013219527A (en) | 2012-04-06 | 2013-10-24 | Canon Inc | Image processing device, image formation device, and program |
| JP5742857B2 (en) | 2013-01-10 | 2015-07-01 | コニカミノルタ株式会社 | Image processing apparatus and image processing method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0922170A (en) * | 1995-07-05 | 1997-01-21 | Konica Corp | Color image forming device |
| JP2000081743A (en) * | 1998-09-04 | 2000-03-21 | Minolta Co Ltd | Image forming device |
| JP2000175031A (en) * | 1998-12-07 | 2000-06-23 | Fuji Xerox Co Ltd | Image processing unit, image processing method and image input device |
| JP2004170755A (en) * | 2002-11-21 | 2004-06-17 | Canon Inc | Color image forming apparatus |
-
2006
- 2006-05-23 JP JP2006143139A patent/JP4898292B2/en not_active Expired - Fee Related
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