JPH0314738U - - Google Patents
Info
- Publication number
- JPH0314738U JPH0314738U JP7389789U JP7389789U JPH0314738U JP H0314738 U JPH0314738 U JP H0314738U JP 7389789 U JP7389789 U JP 7389789U JP 7389789 U JP7389789 U JP 7389789U JP H0314738 U JPH0314738 U JP H0314738U
- Authority
- JP
- Japan
- Prior art keywords
- drum
- rotary drum
- rotary
- mirror
- rotation signal
- 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 8
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Description
第１図は本考案の実施例を示すロータリドラム
の斜視図、第２図は本考案の一実施例を示すロー
タリドラムと検出部のアームの組立状態を示す側
面図、第３図は同上のミラーを角錐形状に組立た
状態を示す上面図と側面図、第４図は同上の角錐
形状にミラーを組立た状態のロータリドラムと検
出部のアームの組立状態を示す側面図、第５図は
同上の検出回路の要部ブロツク図である。
１……ロータリドラム、２……下部ドラム、３
……配線板、４……回転軸、５，６，６ａ，１２
……ミラー、７，７ａ……回転ヘツド、８，１０
……光検出素子、９，１１……光源、１３……ア
ーム、１４……角錐形状のミラー、１２……ホト
ダイオード、２１……抵抗、２２……電源、２３
……増幅器、２４……ＴＴＬレベル変換回路。
Fig. 1 is a perspective view of a rotary drum showing an embodiment of the present invention, Fig. 2 is a side view showing an assembled state of the rotary drum and the arm of the detection unit showing an embodiment of the present invention, and Fig. 3 is the same as above. A top view and a side view showing the mirror assembled into a pyramid shape, FIG. 4 is a side view showing the assembled state of the rotary drum and the arm of the detection unit with the mirror assembled into the same pyramid shape, and FIG. FIG. 3 is a block diagram of a main part of the detection circuit same as the above. 1...Rotary drum, 2...Lower drum, 3
... Wiring board, 4 ... Rotating shaft, 5, 6, 6a, 12
... Mirror, 7, 7a ... Rotating head, 8, 10
...Photodetection element, 9, 11 ... Light source, 13 ... Arm, 14 ... Pyramid-shaped mirror, 12 ... Photodiode, 21 ... Resistor, 22 ... Power supply, 23
...Amplifier, 24...TTL level conversion circuit.
Claims (1)
系のアームと前記アームのロータリドラムと向か
い合つている面に取り付けられた光源及び光検出
素子と回転系のロータリドラム上に取り付けられ
たミラー片で構成かれ、前記光源よりの光を前記
ミラー片に当て、前記ミラー片よりの反射光を前
記光検出素子で受けてドラムの回転信号を検出す
ることを特徴としたドラムの回転信号検出装置。 (2) 複数個の前記ミラー片を等間隔でロータリ
ドラムの回転軸と同心円状にして、ロータリドラ
ム上に取り付けたことを特徴とした請求項(1)記
載のドラムの回転信号検出装置。 (3) 複数個の前記ミラー片をロータリドラムの
回転軸と同一中心を有する角錐形状にロータリド
ラムの回転軸部分に取り付けたことを特徴とした
請求項(1)記載のドラムの回転信号検出装置。 (4) 複数の回転ヘツドを有するロータリドラム
において、回転ヘツドの取り付け位置の略真上の
ロータリドラム上に、前記同心円と異なる半径を
有する同心円状に前記ミラー片を各々の回転ヘツ
ドに対応させて配置し、回転ヘツドの切り換え信
号を検出可能としたことを特徴とする請求項(2)
記載のドラムの回転信号検出装置。 (5) 前記ミラー片の反射光が前記光検出素子に
当たるように、前記ミラー片の取り付けを傾斜さ
せてロータリドラム上に取り付けたことを特徴と
した請求項(1)記載のドラムの回転信号検出装置
。[Claims for Utility Model Registration] (1) A stationary arm located at the top of the rotary drum, a light source and a light detection element attached to the surface of the arm facing the rotary drum, and a rotating rotary arm. It is comprised of a mirror piece attached to a drum, and is characterized in that the light from the light source is applied to the mirror piece, and the light reflected from the mirror piece is received by the photodetecting element to detect a rotation signal of the drum. Drum rotation signal detection device. (2) The drum rotation signal detecting device according to claim (1), wherein a plurality of the mirror pieces are arranged concentrically with the rotation axis of the rotary drum at equal intervals and mounted on the rotary drum. (3) The drum rotation signal detection device according to claim (1), wherein a plurality of the mirror pieces are attached to the rotation shaft portion of the rotary drum in a pyramid shape having the same center as the rotation shaft of the rotary drum. . (4) In a rotary drum having a plurality of rotating heads, on the rotary drum approximately directly above the mounting position of the rotating heads, the mirror pieces are arranged in a concentric circle having a radius different from the concentric circle and corresponding to each rotating head. Claim (2) characterized in that the rotary head is arranged so that a switching signal of the rotary head can be detected.
The drum rotation signal detection device described above. (5) The drum rotation signal detection according to claim (1), wherein the mirror piece is mounted on the rotary drum at an angle so that the light reflected from the mirror piece hits the photodetector element. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7389789U JPH0314738U (en) | 1989-06-23 | 1989-06-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7389789U JPH0314738U (en) | 1989-06-23 | 1989-06-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0314738U true JPH0314738U (en) | 1991-02-14 |
Family
ID=31613109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7389789U Pending JPH0314738U (en) | 1989-06-23 | 1989-06-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0314738U (en) |
-
1989
- 1989-06-23 JP JP7389789U patent/JPH0314738U/ja active Pending
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