JPH03113567U - - Google Patents
Info
- Publication number
- JPH03113567U JPH03113567U JP2297690U JP2297690U JPH03113567U JP H03113567 U JPH03113567 U JP H03113567U JP 2297690 U JP2297690 U JP 2297690U JP 2297690 U JP2297690 U JP 2297690U JP H03113567 U JPH03113567 U JP H03113567U
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- fluorescent lamp
- sensor
- detects
- temperature sensor
- 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
- 238000005286 illumination Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 1
Landscapes
- Facsimile Scanning Arrangements (AREA)
Description
第１図は本考案の一実施例による画像読取装置
の概略構成図、第２図は同装置に使われている温
度比較回路の構成例を示す回路図、第３図は同装
置の要部における動作概要を示すフローチヤート
、第４図は同装置における螢光灯の点灯状態およ
び管壁温度の状態を示すタイミングチヤート、第
５図は従来の画像読取装置の概略構成図、第６図
はイメージセンサー出力の経時変化状態を環境温
度別に示す特性図である。
１……原稿、２……螢光灯、３……イメージセ
ンサー、４……螢光灯点灯回路、６……温度セン
サー、７……温度比較回路、８……制御回路（Ｃ
ＰＵ）。
FIG. 1 is a schematic diagram of an image reading device according to an embodiment of the present invention, FIG. 2 is a circuit diagram showing an example of the configuration of a temperature comparison circuit used in the device, and FIG. 3 is a main part of the device. 4 is a timing chart showing the lighting state of the fluorescent lamp and the state of tube wall temperature in the same device. FIG. 5 is a schematic configuration diagram of a conventional image reading device. FIG. 3 is a characteristic diagram showing changes in image sensor output over time according to environmental temperature. 1... Original, 2... Fluorescent light, 3... Image sensor, 4... Fluorescent lamp lighting circuit, 6... Temperature sensor, 7... Temperature comparison circuit, 8... Control circuit (C
PU).
Claims (1)
明下にある上記原稿を読み取るイメージセンサー
と、上記螢光灯の管理温度を検出する温度センサ
ーと、この温度センサーの検出温度が設定温度に
なるように上記螢光灯の点灯を制御する制御手段
とを備えた画像読取装置。 (2) 原稿を照明する螢光灯と、この螢光灯の照
明下にある上記原稿を読み取るイメージセンサー
と、上記螢光灯の管理温度を検出する温度センサ
ーと、この温度センサーの検出温度が設定温度以
下のとき、および上記設定温度を越えてから所定
時間が経過するまでの間、それぞれの場合に上記
螢光灯を点灯させる制御手段とを備えた画像読取
装置。[Scope of claim for utility model registration] (1) A fluorescent lamp that illuminates the original, an image sensor that reads the original under the illumination of the fluorescent lamp, and a temperature sensor that detects the control temperature of the fluorescent lamp. and a control means for controlling lighting of the fluorescent lamp so that the temperature detected by the temperature sensor becomes a set temperature. (2) A fluorescent light that illuminates the document, an image sensor that reads the document under the illumination of the fluorescent light, a temperature sensor that detects the control temperature of the fluorescent light, and a temperature sensor that detects the temperature detected by the temperature sensor. An image reading device comprising a control means for turning on the fluorescent lamp when the temperature is below a set temperature and until a predetermined time has elapsed after the temperature exceeds the set temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2297690U JPH03113567U (en) | 1990-03-06 | 1990-03-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2297690U JPH03113567U (en) | 1990-03-06 | 1990-03-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03113567U true JPH03113567U (en) | 1991-11-20 |
Family
ID=31525980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2297690U Pending JPH03113567U (en) | 1990-03-06 | 1990-03-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03113567U (en) |
-
1990
- 1990-03-06 JP JP2297690U patent/JPH03113567U/ja active Pending
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