JPS61188142U - - Google Patents
Info
- Publication number
- JPS61188142U JPS61188142U JP7002585U JP7002585U JPS61188142U JP S61188142 U JPS61188142 U JP S61188142U JP 7002585 U JP7002585 U JP 7002585U JP 7002585 U JP7002585 U JP 7002585U JP S61188142 U JPS61188142 U JP S61188142U
- Authority
- JP
- Japan
- Prior art keywords
- document
- light
- drive
- shielding sheets
- rotating member
- 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 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Holders For Sensitive Materials And Originals (AREA)
Description
第１図はこの考案に係る複写機の原稿サイズ検
知装置の一実施例を示す斜視図、第２図は実施例
に係る原稿サイズ検知装置の制御システムを示す
ブロツト図、第３図は第１図中方向から見た矢
視図、第４図は第３図中―線断面図、第５図
は第１図中方向から見た矢視図、第６図は原稿
サイズ検知装置の作動過程の一例を示すフローチ
ヤート、第７図ａ，ｂは駆動プーリの変形例及び
遮光シートの巻き取り部を示す説明図である。
〔符号の説明〕、１……プラテン、２……遮光
シート、３……駆動手段、５……原稿センサ、６
……駆動制御手段、９……演算手段、３０……回
転プーリ（回転部材）、３１……スプリング部材
、３２……エンコーダ。
FIG. 1 is a perspective view showing an embodiment of a document size detection device for a copying machine according to the invention, FIG. 2 is a blot diagram showing a control system of the document size detection device according to the embodiment, and FIG. Figure 4 is a cross-sectional view taken along the line in Figure 3, Figure 5 is a view viewed from the arrow in Figure 1, Figure 6 is the operation process of the document size detection device. FIGS. 7a and 7b are explanatory diagrams showing a modification of the drive pulley and a winding portion of the light-shielding sheet. [Explanation of symbols], 1... platen, 2... light shielding sheet, 3... driving means, 5... document sensor, 6
... Drive control means, 9 ... Calculation means, 30 ... Rotating pulley (rotating member), 31 ... Spring member, 32 ... Encoder.
Claims (1)
数の遮光シートと、この各遮光シートのプラテン
に面する端部に夫々取付けられ且つ上記各遮光シ
ートの端部位置に対応するプラテン部位に原稿が
存在するか否かを検出する原稿センサと、上記各
遮光シートを駆動ワイヤを介して進退動させる駆
動手段と、上記原稿センサの出力に基づいて上記
各遮光シートが原稿の端縁で停止するように上記
駆動手段を制御する駆動制御手段とを備えた複写
機において、上記駆動ワイヤの一部に当該駆動ワ
イヤの移動に追従して回動する回転部材を設ける
と共に、この回転部材には当該回転部材の回転量
に対応したパルス信号が出力されるエンコーダを
付設する一方、上記駆動ワイヤの一部に引張用の
スプリング部材を介装し、上記エンコーダからの
パルス信号を計数することにより、各遮光シート
の進退方向に沿う原稿の寸法を演算して当該原稿
のサイズを検知するようにしたことを特徴とする
複写機の原稿サイズ自動検知装置。 An appropriate number of light-shielding sheets are arranged movably along the platen surface, and each of the light-shielding sheets is attached to the end facing the platen, and a document is placed on the platen portion corresponding to the end position of each of the light-shielding sheets. a document sensor that detects whether or not the document is present; a drive means that moves each of the light-shielding sheets forward and backward via a drive wire; and each of the light-shielding sheets stops at the edge of the document based on the output of the document sensor. In a copying machine equipped with a drive control means for controlling the drive means, a part of the drive wire is provided with a rotating member that rotates following the movement of the drive wire, and the rotating member has a drive control means for controlling the drive means. An encoder that outputs a pulse signal corresponding to the amount of rotation of the rotating member is attached, and a tension spring member is interposed in a part of the drive wire, and the pulse signals from the encoder are counted. An automatic document size detection device for a copying machine, characterized in that the size of the document is detected by calculating the size of the document along the advancing and retreating direction of a light-shielding sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7002585U JPS61188142U (en) | 1985-05-14 | 1985-05-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7002585U JPS61188142U (en) | 1985-05-14 | 1985-05-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61188142U true JPS61188142U (en) | 1986-11-22 |
Family
ID=30606252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7002585U Pending JPS61188142U (en) | 1985-05-14 | 1985-05-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61188142U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5677863A (en) * | 1979-11-30 | 1981-06-26 | Ricoh Co Ltd | Copying machine provided with automatic mask device |
-
1985
- 1985-05-14 JP JP7002585U patent/JPS61188142U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5677863A (en) * | 1979-11-30 | 1981-06-26 | Ricoh Co Ltd | Copying machine provided with automatic mask device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4911566A (en) | Braking control system for thermal printhead | |
| JPS61188142U (en) | ||
| JPS61201056U (en) | ||
| JPS6358247U (en) | ||
| JPS61182540U (en) | ||
| JP2504264Y2 (en) | Print head drive mechanism of recorder | |
| JPS6246678Y2 (en) | ||
| JPH0315843U (en) | ||
| JPH02129863U (en) | ||
| JPS61201050U (en) | ||
| JPS6268134U (en) | ||
| JPS61189217U (en) | ||
| JPS62104990U (en) | ||
| JPS61200844U (en) | ||
| JPS6436835U (en) | ||
| JPS62105977U (en) | ||
| JPS6171467U (en) | ||
| JPH0314643U (en) | ||
| JPS61105164U (en) | ||
| JPH0476312B2 (en) | ||
| JPH04556U (en) | ||
| JPS61181741U (en) | ||
| JPS6450089U (en) | ||
| JPH0364957U (en) | ||
| JPH0234561U (en) |