JPH0363150U - - Google Patents
Info
- Publication number
- JPH0363150U JPH0363150U JP12500989U JP12500989U JPH0363150U JP H0363150 U JPH0363150 U JP H0363150U JP 12500989 U JP12500989 U JP 12500989U JP 12500989 U JP12500989 U JP 12500989U JP H0363150 U JPH0363150 U JP H0363150U
- Authority
- JP
- Japan
- Prior art keywords
- density
- detection
- detection signal
- image
- sent
- 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
- 238000001514 detection method Methods 0.000 claims description 10
- 238000001454 recorded image Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Exposure Or Original Feeding In Electrophotography (AREA)
Description
第１図ないし第４図は本考案による画像濃度調
整装置の一実施例を示す図であり、第１図は複写
機の概略側面図、第２図は要部拡大図、第３図は
ピークホールド回路を含む回路図、第４図ａ〜ｅ
は画像濃度調整装置の動作を示すそれぞれのタイ
ミングチヤートである。第５図ないし第７図は従
来の画像濃度調整装置を示す図であり、第５図は
複写機の斜視図、第６図は要部拡大図、第７図は
露光ランプの光量の経時変化を示す線図である。
２３……原稿濃度検出器（濃度検出手段）、３
０……ＣＰＵ、３１……バイアス電源、３２……
ランプレギユレータ。
1 to 4 are diagrams showing an embodiment of the image density adjusting device according to the present invention, in which FIG. 1 is a schematic side view of a copying machine, FIG. 2 is an enlarged view of the main parts, and FIG. 3 is a peak Circuit diagram including hold circuit, Figure 4 a-e
are respective timing charts showing the operation of the image density adjusting device. 5 to 7 are diagrams showing a conventional image density adjustment device, in which FIG. 5 is a perspective view of a copying machine, FIG. 6 is an enlarged view of main parts, and FIG. 7 is a change in light intensity of an exposure lamp over time. FIG. 23... Original density detector (density detection means), 3
0...CPU, 31...Bias power supply, 32...
lamp regulator.
Claims (1)
検出手段からの検出信号に基づいて露光手段の光
量や現像手段のバイアス電圧を決定する制御手段
とを備え、前記光量やバイアス電圧を前記検出信
号に基づいて変化させることにより記録画像の濃
度を調整する画像濃度調整装置において、前記濃
度検出手段は、前記露光手段に送る検出信号を得
るための第１検出領域よりも、前記現像手段に送
る検出信号を得るための第２検出領域を広くする
ことを特徴とする画像濃度調整装置。 It includes a density detection means for detecting the original density, and a control means for determining the light amount of the exposure means and the bias voltage of the developing means based on the detection signal from the density detection means, and the control means determines the light amount and bias voltage of the developing means based on the detection signal from the density detection means. In the image density adjusting device that adjusts the density of a recorded image by changing the density based on the density, the density detecting means detects the detection signal to be sent to the developing means rather than the first detection area for obtaining the detection signal to be sent to the exposing means. An image density adjustment device characterized in that the second detection area is widened to obtain the image density.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12500989U JPH0363150U (en) | 1989-10-25 | 1989-10-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12500989U JPH0363150U (en) | 1989-10-25 | 1989-10-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0363150U true JPH0363150U (en) | 1991-06-20 |
Family
ID=31672898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12500989U Pending JPH0363150U (en) | 1989-10-25 | 1989-10-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0363150U (en) |
-
1989
- 1989-10-25 JP JP12500989U patent/JPH0363150U/ja active Pending
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