JPS6238244U - - Google Patents
Info
- Publication number
- JPS6238244U JPS6238244U JP12984285U JP12984285U JPS6238244U JP S6238244 U JPS6238244 U JP S6238244U JP 12984285 U JP12984285 U JP 12984285U JP 12984285 U JP12984285 U JP 12984285U JP S6238244 U JPS6238244 U JP S6238244U
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- area
- sensing member
- conveyance state
- detection device
- 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 7
- 238000010586 diagram Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Controlling Sheets Or Webs (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
Description
第1図は本考案を適用した電子写真複写装置の
概略図、第2図は検知センサの配置状態を示す平
面図、第3図イ,ロはシート検知回路の一実施例
を示す回路図、第4図は判定回路の一実施例を示
す論理回路、第5図はシート搬送タイミング信号
のタイミングチヤートを示している。
1:複写装置本体、2:原稿台、3:ドラム状
感光体(ドラム)、4,7:帯電器、5:ブラン
ク露光用ランプ、6:現像装置、8:クリーニン
グ装置、9:原稿、10:ランプ、11,12:
ミラー、13:結像レンズ、14:スリツト板、
15:カセツト、16:送出しローラ、17,1
8:ガイド板、19:タイミングローラ、20:
シート、21:搬送ベルト、22:定着ローラ、
23:排紙トレイ、24:第1のシート有無検知
センサ、24a:第1の受光素子、24b:第1
の発光素子、25:第2のシート有無検知センサ
、25a:第1の受光素子、25b:第2の発光
素子。
FIG. 1 is a schematic diagram of an electrophotographic copying apparatus to which the present invention is applied, FIG. 2 is a plan view showing the arrangement of detection sensors, and FIGS. 3A and 3B are circuit diagrams showing one embodiment of a sheet detection circuit. FIG. 4 shows a logic circuit showing one embodiment of the determination circuit, and FIG. 5 shows a timing chart of a sheet conveyance timing signal. 1: Copying device main body, 2: Original table, 3: Drum-shaped photoreceptor (drum), 4, 7: Charger, 5: Blank exposure lamp, 6: Developing device, 8: Cleaning device, 9: Original, 10 : Lamp, 11, 12:
mirror, 13: imaging lens, 14: slit plate,
15: Cassette, 16: Delivery roller, 17,1
8: Guide plate, 19: Timing roller, 20:
sheet, 21: conveyor belt, 22: fixing roller,
23: Paper discharge tray, 24: First sheet presence detection sensor, 24a: First light receiving element, 24b: First
25: second sheet presence/absence detection sensor, 25a: first light receiving element, 25b: second light emitting element.
Claims (1)
ート搬送状態良否検知装置において、相対的に幅
の大きい第1シートの通過領域と相対的に幅の小
さい第2シートの通過領域との共通領域中に設け
られた第1検知部材と、第1シート通過領域と第
2シート通過領域との差分領域中に設けられた第
2検知部材と、前記第1シート選択時に前記双方
の検知部材がシート有りを検知した場合および前
記第2シート選択時に前記第1検知部材のみがシ
ート有りを検知した場合にシート搬送状態を良と
判定する判定回路とを備え、前記第1検知部材お
よび第2検知部材を、前記第1シートの搬送先端
を同時に検知できる位置に設けたことを特徴とす
るシート搬送状態良否検知装置。 In a sheet conveyance state quality detection device for a device that conveys sheets of relatively different widths, in a common area between a passage area for a first sheet having a relatively large width and a passage area for a second sheet having a relatively small width. a first sensing member provided in the area, a second sensing member provided in the difference area between the first sheet passing area and the second sheet passing area, and both sensing members when selecting the first sheet, detecting that a sheet is present. and a determination circuit that determines that the sheet conveyance state is good when only the first sensing member detects the presence of a sheet at the time of selecting the second sheet, and the first sensing member and the second sensing member are . A sheet conveyance state quality detection device, characterized in that the sheet conveyance state quality detection device is provided at a position where the conveyance leading edge of the first sheet can be simultaneously detected.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12984285U JPS6238244U (en) | 1985-08-26 | 1985-08-26 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12984285U JPS6238244U (en) | 1985-08-26 | 1985-08-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6238244U true JPS6238244U (en) | 1987-03-06 |
Family
ID=31026781
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12984285U Pending JPS6238244U (en) | 1985-08-26 | 1985-08-26 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6238244U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH048207U (en) * | 1990-05-08 | 1992-01-24 |
-
1985
- 1985-08-26 JP JP12984285U patent/JPS6238244U/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH048207U (en) * | 1990-05-08 | 1992-01-24 |
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