JPH03114840U - - Google Patents
Info
- Publication number
- JPH03114840U JPH03114840U JP2236690U JP2236690U JPH03114840U JP H03114840 U JPH03114840 U JP H03114840U JP 2236690 U JP2236690 U JP 2236690U JP 2236690 U JP2236690 U JP 2236690U JP H03114840 U JPH03114840 U JP H03114840U
- Authority
- JP
- Japan
- Prior art keywords
- document
- light
- reflected
- document table
- size
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 12
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
Description
第１図は本考案による原稿サイズ検知装置の一
実施例を示すブロツク図、第２図は第１図に示す
光検知センサの内部構成図、第３図は第１図に示
す光検知センサおよび反射板の詳細を示す斜視図
、第４図ａ，ｂは各々第１図に示す光検知センサ
の光路を示す模式図、第５図は光入射角と原稿台
からの反射光量との関係を示す表図、第６図は同
実施例のサイズ検知動作例を示すフローチヤート
、第７図は同実施例の用紙選択動作例を示すフロ
ーチヤート、第８図は同実施例の定位置復帰動作
例を示すフローチヤート、第９図は同実施例のリ
セツト動作例を示すフローチヤート、第１０図は
光検知センサの光軌跡例を示す平面図、第１１図
ａ，ｂは各々同実施例の動作例を示す波形図、第
１２図は同実施例で使用されるサイズテーブルの
一例を示す模式図である。
１……原稿載置部、２……光スキヤナ部、３…
…信号処理部、５，６……駆動回路、７……原稿
台、１１……光検知センサ、１２……反射板、１
３……モータ、１４……エンコーダ。
FIG. 1 is a block diagram showing an embodiment of the document size detection device according to the present invention, FIG. 2 is an internal configuration diagram of the light detection sensor shown in FIG. 1, and FIG. 3 is a block diagram showing the light detection sensor shown in FIG. 4a and 4b are schematic diagrams showing the optical path of the light detection sensor shown in FIG. 1, and FIG. 5 shows the relationship between the light incident angle and the amount of light reflected from the document table. 6 is a flow chart showing an example of the size detection operation of the same embodiment, FIG. 7 is a flow chart showing an example of paper selection operation of the same embodiment, and FIG. 8 is a return to normal position operation of the same embodiment. FIG. 9 is a flowchart showing an example of the reset operation of the same embodiment, FIG. 10 is a plan view showing an example of the light trajectory of the light detection sensor, and FIGS. 11a and b are each of the same embodiment. FIG. 12 is a waveform diagram showing an example of operation, and a schematic diagram showing an example of a size table used in the same embodiment. 1... Document placement section, 2... Optical scanner section, 3...
...Signal processing unit, 5, 6... Drive circuit, 7... Original table, 11... Light detection sensor, 12... Reflection plate, 1
3...Motor, 14...Encoder.
Claims (1)
当てて、その反射光に基づいて前記原稿台上に載
置されている原稿のサイズを検知する原稿サイズ
検知装置において、前記光検知センサから出射さ
れる光が原稿台の下面で反射されて前記光検知セ
ンサに戻る角度となるように前記光検知センサの
光路と前記原稿台の位置を決め、前記原稿台から
の反射光のうち、原稿が載置されていない部分か
らの反射光量を基準として他の部分からの反射光
量をレベル弁別して原稿サイズを判断することを
特徴とする原稿サイズ検知装置。 (2) 前記光検知センサから出射される光が原稿
台に対し５度ないし１５度の角度で入射する請求
項１記載の原稿サイズ検知装置。[Scope of Claim for Utility Model Registration] (1) A document in which the size of the document placed on the document table is detected based on the reflected light by shining light from below the document table using a light detection sensor. In the size detection device, the optical path of the photodetection sensor and the position of the document table are determined so that the light emitted from the photodetection sensor is reflected at the lower surface of the document table and returns to the photodetection sensor, and the A document size detection device that determines the document size by level-discriminating the amount of light reflected from other portions of light reflected from a document table, with the amount of light reflected from a portion where no document is placed as a reference. (2) The document size detection device according to claim 1, wherein the light emitted from the light detection sensor is incident on the document table at an angle of 5 degrees to 15 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990022366U JP2533482Y2 (en) | 1990-03-06 | 1990-03-06 | Document detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990022366U JP2533482Y2 (en) | 1990-03-06 | 1990-03-06 | Document detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03114840U true JPH03114840U (en) | 1991-11-26 |
| JP2533482Y2 JP2533482Y2 (en) | 1997-04-23 |
Family
ID=31525377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990022366U Expired - Lifetime JP2533482Y2 (en) | 1990-03-06 | 1990-03-06 | Document detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2533482Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59153561U (en) * | 1983-04-01 | 1984-10-15 | 富士ゼロックス株式会社 | Original size detection device |
| JPS61179430A (en) * | 1985-02-05 | 1986-08-12 | Canon Inc | Copying machine equipped with device for recognizing original size |
-
1990
- 1990-03-06 JP JP1990022366U patent/JP2533482Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59153561U (en) * | 1983-04-01 | 1984-10-15 | 富士ゼロックス株式会社 | Original size detection device |
| JPS61179430A (en) * | 1985-02-05 | 1986-08-12 | Canon Inc | Copying machine equipped with device for recognizing original size |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2533482Y2 (en) | 1997-04-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |