JPS63136452U - - Google Patents
Info
- Publication number
- JPS63136452U JPS63136452U JP2923387U JP2923387U JPS63136452U JP S63136452 U JPS63136452 U JP S63136452U JP 2923387 U JP2923387 U JP 2923387U JP 2923387 U JP2923387 U JP 2923387U JP S63136452 U JPS63136452 U JP S63136452U
- Authority
- JP
- Japan
- Prior art keywords
- film
- image
- take
- plate
- roll
- 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
- 230000003287 optical effect Effects 0.000 claims 3
- 238000003702 image correction Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Drawing Aids And Blackboards (AREA)
Description
第１図は本考案による電子黒板の構造を示す断
面図であり、第２図は本考案による電子黒板にお
ける画像濃度補正板の駆動機構を示す説明図であ
り、第３図イ，ロは本考案による電子黒板におけ
る画像濃度補正板の動作状態を示す説明図であり
、第４図は本考案による電子黒板における画像濃
度補正板の他の駆動機構を示す説明図である。
符号の説明、１……電子黒板、２，３……巻き
取りローラ、４……蛍光灯、７……イメージセン
サユニツト、９……フイルム、１０……濃度補正
板、１１……プレート、１７……回転板、１９…
…モータ、２１……ソレノイド。
FIG. 1 is a sectional view showing the structure of the electronic blackboard according to the present invention, FIG. 2 is an explanatory diagram showing the driving mechanism of the image density correction plate in the electronic blackboard according to the present invention, and FIGS. FIG. 4 is an explanatory diagram showing the operating state of the image density correction plate in the electronic blackboard according to the invention, and FIG. 4 is an explanatory diagram showing another driving mechanism of the image density correction plate in the electronic blackboard according to the invention. Explanation of symbols: 1...Electronic blackboard, 2, 3...Take-up roller, 4...Fluorescent lamp, 7...Image sensor unit, 9...Film, 10...Density correction plate, 11...Plate, 17 ...Rotating plate, 19...
...Motor, 21...Solenoid.
Claims (1)
、一方の巻き取りロールよりフイルムを解き出し
て上記平板の前面を通過させ、他方の巻き取りロ
ールに巻き取らせるフイルムの移動の過程でフイ
ルム上の画像情報を光学的手段により読み取る電
子黒板において、 前記画像情報の読み取り濃度を補正する画像濃
度補正手段と、該画像濃度補正手段が基準とする
適正画像濃度値を備えた画像補正板と、該画像補
正板を前記光学的手段によるフイルムの読み取り
光路中に移動させる移動手段とを有することを特
徴とする電子黒板。[Claims for Utility Model Registration] A film in which two take-up rolls are provided near both ends of a flat plate, the film is unwound from one take-up roll, passed through the front surface of the flat plate, and wound onto the other take-up roll. An electronic blackboard that reads image information on a film by optical means during the movement of the film, comprising an image density correction means for correcting the reading density of the image information, and an appropriate image density value as a reference for the image density correction means. 1. An electronic whiteboard comprising: an image correction plate; and a moving means for moving the image correction plate into an optical path for reading a film by the optical means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2923387U JPS63136452U (en) | 1987-02-27 | 1987-02-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2923387U JPS63136452U (en) | 1987-02-27 | 1987-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63136452U true JPS63136452U (en) | 1988-09-07 |
Family
ID=30832942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2923387U Pending JPS63136452U (en) | 1987-02-27 | 1987-02-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63136452U (en) |
-
1987
- 1987-02-27 JP JP2923387U patent/JPS63136452U/ja active Pending
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