JPS6377938U - - Google Patents
Info
- Publication number
- JPS6377938U JPS6377938U JP17311486U JP17311486U JPS6377938U JP S6377938 U JPS6377938 U JP S6377938U JP 17311486 U JP17311486 U JP 17311486U JP 17311486 U JP17311486 U JP 17311486U JP S6377938 U JPS6377938 U JP S6377938U
- Authority
- JP
- Japan
- Prior art keywords
- light
- changing
- receiving element
- voltage
- paper
- 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
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
Landscapes
- Controlling Sheets Or Webs (AREA)
Description
第１図は本実施例の用紙検知装置の回路図、第
２図は本実施例の用紙検知装置の要部等価回路図
、第３図はカウンタの出力に対する抵抗値特性図
、第４図は本実施例の用紙検知装置のタイムチヤ
ート、第５図は従来の用紙検知装置の回路図であ
る。
３……フオトセンサ、５……制御基板、６……
ＣＰＵ、７……ＥＥＰＲＯＭ、８……コンパレー
タ、９……データセレクタ、１０……カウンタ、
Ｑ１〜Ｑ５……トランジスタ。
Fig. 1 is a circuit diagram of the paper detection device of this embodiment, Fig. 2 is an equivalent circuit diagram of the main part of the paper detection device of this embodiment, Fig. 3 is a resistance value characteristic diagram for the output of the counter, and Fig. 4 is FIG. 5, which is a time chart of the paper detecting device of this embodiment, is a circuit diagram of a conventional paper detecting device. 3...Photo sensor, 5...Control board, 6...
CPU, 7...EEPROM, 8...Comparator, 9...Data selector, 10...Counter,
Q1 to Q5 ...Transistors.
Claims (1)
入射する受光素子と、該受光素子に接続され該受
光素子の出力電圧を分圧する複数の抵抗器と、前
記分圧電圧を基準電圧と比較する比較手段と、前
記分圧電圧を段階的に切換える切換手段と、前記
基準電圧を変更する変更手段と、前記比較手段の
出力が反転したことを検知し反転時の前記切換手
段の出力値を記憶手段に記憶させる制御手段とを
有することを特徴とする用紙検知装置。 (2) 前記記憶手段は書込み消去可能な不揮発性
メモリであることを特徴とする実用新案登録請求
の範囲第１項記載の用紙検知装置。[Claims for Utility Model Registration] (1) A light-receiving element through which light emitted from the light-emitting element enters through a sheet of paper, and a plurality of resistors connected to the light-receiving element to divide the output voltage of the light-receiving element; a comparison means for comparing the divided voltage with a reference voltage; a switching means for changing the divided voltage stepwise; a changing means for changing the reference voltage; and control means for storing an output value of the switching means at the time in a storage means. (2) The paper detecting device according to claim 1, wherein the storage means is a writable and erasable nonvolatile memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17311486U JPS6377938U (en) | 1986-11-11 | 1986-11-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17311486U JPS6377938U (en) | 1986-11-11 | 1986-11-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6377938U true JPS6377938U (en) | 1988-05-23 |
Family
ID=31110271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17311486U Pending JPS6377938U (en) | 1986-11-11 | 1986-11-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6377938U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0267918A (en) * | 1988-09-02 | 1990-03-07 | Oki Electric Ind Co Ltd | Automatic adjusting circuit and automatic adjusting method of optical medium detecting device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5781043A (en) * | 1980-11-11 | 1982-05-20 | Fujitsu Ltd | Paper conveyance detection circuit |
| JPS6131509A (en) * | 1984-07-24 | 1986-02-14 | 新日本製鐵株式会社 | Hanging scaffold stabilizing construction utilizing cross bridge |
-
1986
- 1986-11-11 JP JP17311486U patent/JPS6377938U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5781043A (en) * | 1980-11-11 | 1982-05-20 | Fujitsu Ltd | Paper conveyance detection circuit |
| JPS6131509A (en) * | 1984-07-24 | 1986-02-14 | 新日本製鐵株式会社 | Hanging scaffold stabilizing construction utilizing cross bridge |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0267918A (en) * | 1988-09-02 | 1990-03-07 | Oki Electric Ind Co Ltd | Automatic adjusting circuit and automatic adjusting method of optical medium detecting device |
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