JPS6357672U - - Google Patents
Info
- Publication number
- JPS6357672U JPS6357672U JP15048986U JP15048986U JPS6357672U JP S6357672 U JPS6357672 U JP S6357672U JP 15048986 U JP15048986 U JP 15048986U JP 15048986 U JP15048986 U JP 15048986U JP S6357672 U JPS6357672 U JP S6357672U
- Authority
- JP
- Japan
- Prior art keywords
- detection device
- toner concentration
- concentration detection
- image area
- magnetic sensor
- 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 3
- 108091008695 photoreceptors Proteins 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Dry Development In Electrophotography (AREA)
Description
第１図は、この考案のトナー濃度検出装置が設
けられる装置の典形例としての複写機の概略正面
図、第２図は、同上の要部の拡大詳細図、第３図
は、同上のうちの磁気センサの好適例の正面図、
第４図は、第３図の磁気センサを使用した際の画
像濃度とセンサ出力との特性曲線図、第５図は、
この考案の装置を使用した際の画像濃度と転写枚
数との相関図である。
１……回転感光体、２……スキヤナ、３……画
像パターン像、４……原稿台、５……帯電チヤー
ジヤ、６……イレーサ、７……露光部、８……現
像部、９……磁気センサ、１１……ホール素子、
１２……同軸ケーブル。
FIG. 1 is a schematic front view of a copying machine as a typical example of an apparatus equipped with the toner concentration detection device of this invention, FIG. 2 is an enlarged detailed view of the main parts of the same, and FIG. Front view of a suitable example of my magnetic sensor,
FIG. 4 is a characteristic curve diagram of image density and sensor output when using the magnetic sensor of FIG. 3, and FIG.
FIG. 3 is a correlation diagram between image density and the number of transferred sheets when using the device of this invention. DESCRIPTION OF SYMBOLS 1...Rotating photoreceptor, 2...Scanner, 3...Image pattern image, 4...Document table, 5...Charger, 6...Eraser, 7...Exposure section, 8...Development section, 9... ...Magnetic sensor, 11...Hall element,
12...Coaxial cable.
Claims (1)
現像剤を用いて現像した画像部のトナー濃度検出
装置において、画像部の残留電荷によつて誘導さ
れる磁界を検知する磁気センサを設けたことを特
徴とするトナー濃度検出装置。 In a toner concentration detection device for an image area where an electrostatic latent image formed on a rotating photoreceptor is developed using a two-component developer, a magnetic sensor is provided to detect a magnetic field induced by residual charges in the image area. A toner concentration detection device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15048986U JPS6357672U (en) | 1986-09-30 | 1986-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15048986U JPS6357672U (en) | 1986-09-30 | 1986-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6357672U true JPS6357672U (en) | 1988-04-18 |
Family
ID=31066678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15048986U Pending JPS6357672U (en) | 1986-09-30 | 1986-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6357672U (en) |
-
1986
- 1986-09-30 JP JP15048986U patent/JPS6357672U/ja active Pending
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