JPH01149162U - Image reader - Google Patents
Image readerInfo
- Publication number
- JPH01149162U JPH01149162U JP1988047176U JP4717688U JPH01149162U JP H01149162 U JPH01149162 U JP H01149162U JP 1988047176 U JP1988047176 U JP 1988047176U JP 4717688 U JP4717688 U JP 4717688U JP H01149162 U JPH01149162 U JP H01149162U
- Authority
- JP
- Japan
- Prior art keywords
- optical system
- light amount
- amount value
- light source
- driving
- 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
Landscapes
- Facsimiles In General (AREA)
Description
第１図は本考案による画像読取装置の一実施例
を示す概略側断面図、第２図はその制御系のブロ
ツク図、第３図はその制御手段の動作手順を示す
フローチヤートである。
Ａ……画像読取装置本体、Ｂ……原稿台、Ｃ…
…原稿露光走査光学系、１……ハロゲンランプ、
２……標準白板、３……フアンモータ、４ａ，４
ｂ，４ｃ……反射ミラー、５……レンズ、６……
受光手段、７……ホームポジシヨン検知手段、８
……制御手段、９……タイマー手段、１０……光
学用モータ、１１……表示手段。
FIG. 1 is a schematic side sectional view showing an embodiment of an image reading apparatus according to the present invention, FIG. 2 is a block diagram of its control system, and FIG. 3 is a flowchart showing the operating procedure of its control means. A...Image reading device main body, B...Original table, C...
...Original exposure scanning optical system, 1...Halogen lamp,
2...Standard white board, 3...Fan motor, 4a, 4
b, 4c... Reflection mirror, 5... Lens, 6...
Light receiving means, 7... Home position detection means, 8
. . . control means, 9 . . . timer means, 10 . . . optical motor, 11 . . . display means.
Claims (1)
シヨンに移動し、原稿読取の指示で原稿台に沿つ
て移動しながら原稿を露光走査し、反射光を結像
光学系を介して受光手段に導く光源並びに反射光
学系からなる露光走査手段と、装置本体内の空気
を装置本体外に排気する排気手段と、該ホームポ
ジシヨンにおいて該露光走査手段により露光され
る検査用反射部材と、該受光手段からの画像信号
に基づき該結像光学系又は該反射光学系が結露状
態であるか否かを判定し、該光源及び該排気手段
を駆動制御する制御手段とを備え、該制御手段は
該結像光学系及び該反射光学系が非結露状態であ
るときに該検査用反射部材を露光して得られた光
量を基準光量値として予め設定する基準光量値設
定部と、該露光走査手段がホームポジシヨンに達
すると該光源及び排気手段を駆動させると共に、
該検査用反射部材を露光して得られた実光量値と
該基準光量値とを比較し、該実光量値が所定範囲
内になると該光源及び排気手段の駆動を停止させ
る判定部とから構成したことを特徴とする画像読
取装置。 ２ 前記制御手段は該露光走査手段がホームポジ
シヨンに達してから所定の時間経過後、実光量値
が所定範囲内に達しないと異常状態と判定して、
前記光源及び排気手段の駆動を停止することを特
徴とする請求項１に記載の画像読取装置。[Scope of Claim for Utility Model Registration] 1. Moves from the retreat position to the home position when the main power is turned on, scans the document for exposure while moving along the document table in response to an instruction to read the document, and uses the reflected light as an imaging optical system. an exposure scanning means consisting of a light source guided to the light receiving means through the light receiving means and a reflective optical system; an exhaust means for exhausting the air inside the apparatus main body to the outside of the apparatus main body; and an inspection device exposed by the exposure scanning means at the home position. a reflecting member; and a control means for determining whether or not the imaging optical system or the reflecting optical system is in a dew condensation state based on the image signal from the light receiving means, and driving and controlling the light source and the exhaust means. , the control means includes a reference light amount value setting section that presets a light amount obtained by exposing the inspection reflective member when the imaging optical system and the reflective optical system are in a non-condensing state as a reference light amount value; , when the exposure scanning means reaches the home position, driving the light source and the exhaust means;
Comprised of a determination unit that compares the actual light amount value obtained by exposing the inspection reflective member with the reference light amount value, and stops the driving of the light source and the exhaust means when the actual light amount value falls within a predetermined range. An image reading device characterized by: 2. The control means determines that it is an abnormal state if the actual light amount value does not reach within a predetermined range after a predetermined time has elapsed since the exposure scanning means reached the home position,
The image reading device according to claim 1, wherein driving of the light source and the exhaust means is stopped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988047176U JPH01149162U (en) | 1988-04-07 | 1988-04-07 | Image reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988047176U JPH01149162U (en) | 1988-04-07 | 1988-04-07 | Image reader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01149162U true JPH01149162U (en) | 1989-10-16 |
Family
ID=31273402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988047176U Pending JPH01149162U (en) | 1988-04-07 | 1988-04-07 | Image reader |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01149162U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3125516A1 (en) * | 2015-07-30 | 2017-02-01 | Kabushiki Kaisha Toshiba | Image processing apparatus, image forming apparatus and dew determination method |
-
1988
- 1988-04-07 JP JP1988047176U patent/JPH01149162U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3125516A1 (en) * | 2015-07-30 | 2017-02-01 | Kabushiki Kaisha Toshiba | Image processing apparatus, image forming apparatus and dew determination method |
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