JPS61198966U - - Google Patents
Info
- Publication number
- JPS61198966U JPS61198966U JP8365985U JP8365985U JPS61198966U JP S61198966 U JPS61198966 U JP S61198966U JP 8365985 U JP8365985 U JP 8365985U JP 8365985 U JP8365985 U JP 8365985U JP S61198966 U JPS61198966 U JP S61198966U
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- light
- photoreceptor drum
- transfer paper
- emitting part
- 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
- 108091008695 photoreceptors Proteins 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 210000000078 claw Anatomy 0.000 description 1
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Controlling Sheets Or Webs (AREA)
Description
第１図は本考案の光検知装置の一実施例の電気
ブロツク図、第２図は従来の電子写真装置の感光
体ドラム周辺の概略構成図、第３図は感光体ドラ
ムの対波長感度の特性を示す図、第４図Ａ，Ｂ，
Ｃ，Ｄ，Ｅは本考案の光検知装置に用いる入出力
信号の波形図、第５図は同、他の実施例を示す概
略側面図である。
図中１……感光体ドラム、２……帯電器、３…
…露光部、４……現像機、５……転写器、６……
剥離爪、７……クリーナー、８……給紙ローラ対
、９……発光部、１０……受光部、１１……光検
知装置、１２……クロツク・パルス発生回路、１
３……ＬＥＤドライヴ回路、１４……増幅回路、
１５……コンパレータ回路、１６……Ｄフリツプ
・フロツプ、１７……遅延回路、１８……干渉フ
イルター。
Fig. 1 is an electrical block diagram of an embodiment of the photodetector of the present invention, Fig. 2 is a schematic diagram of the area around the photoreceptor drum of a conventional electrophotographic device, and Fig. 3 shows the wavelength sensitivity of the photoreceptor drum. Diagrams showing characteristics, Figure 4 A, B,
C, D, and E are waveform diagrams of input and output signals used in the photodetector of the present invention, and FIG. 5 is a schematic side view showing another embodiment of the same. In the figure, 1... photoreceptor drum, 2... charger, 3...
...Exposure section, 4...Developer, 5...Transfer device, 6...
Peeling claw, 7... Cleaner, 8... Paper feed roller pair, 9... Light emitting section, 10... Light receiving section, 11... Light detection device, 12... Clock pulse generation circuit, 1
3...LED drive circuit, 14...amplifier circuit,
15...Comparator circuit, 16...D flip-flop, 17...Delay circuit, 18...Interference filter.
Claims (1)
配置し、該発光部から感光体ドラム等の表面に照
射した光の反射光を受光部で受光し、その光量の
変化によつて前記感光体ドラム等の表面に、剥離
工程終了後、剥離ミスにより巻着している転写紙
の有無を検知するようにした光検知装置において
、前記発光部に、その発光波長を、前記感光体ド
ラム等の対波長感度の最低限度の領域に設定した
発光素子を使用することによつて発光部による有
害感光をなくしたことを特徴とする転写紙検知装
置。 A light emitting part and a light receiving part are disposed on one outer periphery of the photoreceptor drum, etc., and the light receiving part receives the reflected light of the light irradiated from the light emitting part to the surface of the photoreceptor drum, etc. In a photodetecting device that detects the presence or absence of transfer paper wrapped around the surface of a photoreceptor drum or the like due to a peeling error after the completion of a peeling process, the light emitting section transmits its emission wavelength to the photoreceptor drum. A transfer paper detection device characterized in that harmful light exposure caused by a light emitting part is eliminated by using a light emitting element whose wavelength sensitivity is set to a minimum range such as .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8365985U JPS61198966U (en) | 1985-06-03 | 1985-06-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8365985U JPS61198966U (en) | 1985-06-03 | 1985-06-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61198966U true JPS61198966U (en) | 1986-12-12 |
Family
ID=30632488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8365985U Pending JPS61198966U (en) | 1985-06-03 | 1985-06-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61198966U (en) |
-
1985
- 1985-06-03 JP JP8365985U patent/JPS61198966U/ja active Pending
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