JPH0246472U - - Google Patents
Info
- Publication number
- JPH0246472U JPH0246472U JP12431288U JP12431288U JPH0246472U JP H0246472 U JPH0246472 U JP H0246472U JP 12431288 U JP12431288 U JP 12431288U JP 12431288 U JP12431288 U JP 12431288U JP H0246472 U JPH0246472 U JP H0246472U
- Authority
- JP
- Japan
- Prior art keywords
- image
- pixel
- signal
- line sensor
- correction circuit
- 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
- 238000000034 method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 1
Landscapes
- Facsimile Image Signal Circuits (AREA)
- Electronic Switches (AREA)
Description
第１図は本考案の複製画装置の実施例を示すブ
ロツク図、第２図は本考案の装置のむら補正回路
の具体的な構成を示すブロツク図、第３図は点順
次多重型イメージラインセンサの構成と出力信号
の説明図、第４図はイメージラインセンサとサー
マルヘツドとのＭＴＦ特性の説明図、第５図はＭ
ＴＦ補正回路の一例を示すブロツク図、第６図は
従来の複製画装置の一例を示す概略構成図、第７
図はイメージラインセンサの画素ごとの読取り感
度のバラツキを示すグラフ、第８図はサーマルヘ
ツドの画素ごとの印字濃度のバラツキを示すグラ
フである。
１…原稿、２０…イメージラインセンサ、３０
…信号処理部、３１…むら補正回路、３２…空間
周波数補正回路、３３…階調補正回路、４０…ラ
インヘツド。
Fig. 1 is a block diagram showing an embodiment of the copying apparatus of the present invention, Fig. 2 is a block diagram showing the specific configuration of the unevenness correction circuit of the apparatus of the present invention, and Fig. 3 is a dot-sequential multiple image line sensor. Fig. 4 is an explanatory diagram of the MTF characteristics of the image line sensor and thermal head, and Fig. 5 is an explanatory diagram of the configuration and output signal of the M
FIG. 6 is a block diagram showing an example of a TF correction circuit; FIG. 6 is a schematic configuration diagram showing an example of a conventional copying image device; FIG.
The figure is a graph showing the variation in reading sensitivity for each pixel of the image line sensor, and FIG. 8 is a graph showing the variation in print density for each pixel of the thermal head. 1... Original, 20... Image line sensor, 30
...Signal processing unit, 31...Unevenness correction circuit, 32...Spatial frequency correction circuit, 33...Tone correction circuit, 40...Line head.
Claims (1)
るイメージラインセンサと、前記読取り動作によ
り得られた画像信号を処理する信号処理部と、前
記処理後の画像信号に基づいて画素単位で印刷を
行なうラインヘツドとから成り、前記信号処理部
には、前記イメージラインセンサの画素ごとの読
取り感度のバラツキと前記ラインヘツドの画素ご
との印刷濃度のバラツキとを一括して補正するむ
ら補正回路を設けたことを特徴とする複製画装置
。 ２ 原稿上の画像を画素単位で光電変換して読取
るイメージラインセンサと、前記読取り動作によ
り得られた画像信号を処理する信号処理部と、前
記処理後の画像信号に基づいて画素単位で印刷を
行なうラインヘツドとから成り、前記信号処理部
には、前記画像信号の読取り時と印刷時に生じる
隣接間混濁を一括して補正する空間周波数補正回
路を設けたことを特徴とする複製画装置。[Claims for Utility Model Registration] 1. An image line sensor that photoelectrically converts and reads an image on a document pixel by pixel, a signal processing unit that processes an image signal obtained by the reading operation, and an image signal after the processing. and a line head that performs printing pixel by pixel based on the image line sensor. A reproduction image device characterized in that it is provided with an unevenness correction circuit. 2. An image line sensor that photoelectrically converts and reads an image on a document pixel by pixel; a signal processing unit that processes the image signal obtained by the reading operation; and a signal processor that performs printing pixel by pixel based on the processed image signal. 1. A copying image apparatus comprising: a line head for performing image reproduction, and said signal processing section is provided with a spatial frequency correction circuit for collectively correcting inter-adjacent turbidity occurring during reading and printing of said image signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12431288U JPH0246472U (en) | 1988-09-22 | 1988-09-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12431288U JPH0246472U (en) | 1988-09-22 | 1988-09-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0246472U true JPH0246472U (en) | 1990-03-29 |
Family
ID=31373936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12431288U Pending JPH0246472U (en) | 1988-09-22 | 1988-09-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0246472U (en) |
-
1988
- 1988-09-22 JP JP12431288U patent/JPH0246472U/ja active Pending
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