JPH02119654U - - Google Patents
Info
- Publication number
- JPH02119654U JPH02119654U JP2543689U JP2543689U JPH02119654U JP H02119654 U JPH02119654 U JP H02119654U JP 2543689 U JP2543689 U JP 2543689U JP 2543689 U JP2543689 U JP 2543689U JP H02119654 U JPH02119654 U JP H02119654U
- Authority
- JP
- Japan
- Prior art keywords
- document
- light
- size
- detection member
- horizontal direction
- 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
- Holders For Sensitive Materials And Originals (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
Description
第１図は本考案の複写機の一実施例を示す側面
断面構成図、第２図は本考案の光センサの位置の
例を示す平面図、第３図は本考案によるスキヤン
領域の例を示す平面図、第４図は上記光センサに
付加する回路例を示す図、第５図イ乃至リは本考
案により検出した光センサ出力の例を示す電圧波
形図、第６図は光センサの出力と原稿サイズとの
関係を示す図、第７図は圧板と原稿及び光センサ
の感度の際差異を示す図、第８図は本考案の制御
手順の一例示すフローチヤート図、第９図ａ，ｂ
は従来の複写機の原稿サイズ検出手段の一例を示
す構造図である。
１……コンタクトガラス、２……圧板、３……
原稿、４……光学系移動部材、５……露光ランプ
、６，７，８，１０……ミラー、９……レンズ、
１１……感光体ドラム、１２……帯電チヤージヤ
、１３……現像部、１４……転分チヤージヤ、１
５……クリーニング部、１６……除電ランプ、１
７……給紙装置、１８……定着装置、２１……光
センサ、２２……孔、２３……遮光板、４１，４
２……オペアンプ、４３……ＣＰＵ。
FIG. 1 is a side cross-sectional configuration diagram showing an embodiment of the copying machine of the present invention, FIG. 2 is a plan view showing an example of the position of the optical sensor of the present invention, and FIG. 3 is an example of the scan area according to the present invention. FIG. 4 is a diagram showing an example of a circuit added to the optical sensor, FIG. FIG. 7 is a diagram showing the relationship between output and original size; FIG. 7 is a diagram showing differences in sensitivity between the pressure plate, the original, and the optical sensor; FIG. 8 is a flowchart showing an example of the control procedure of the present invention; FIG. 9 a ,b
1 is a structural diagram showing an example of a document size detection means of a conventional copying machine. 1... Contact glass, 2... Pressure plate, 3...
Original, 4... Optical system moving member, 5... Exposure lamp, 6, 7, 8, 10... Mirror, 9... Lens,
11... Photosensitive drum, 12... Charging charger, 13... Developing section, 14... Transfer charger, 1
5... Cleaning section, 16... Static elimination lamp, 1
7... Paper feeding device, 18... Fixing device, 21... Optical sensor, 22... Hole, 23... Light shielding plate, 41, 4
2... operational amplifier, 43... CPU.
Claims (1)
源からの光を原稿に照射して、その反射光を光検
知部材に導くことによつて原稿サイズを識別する
複写機において、 前記光検知部材は遮光板に形成された孔を介し
て原稿反射光を受光するとともに、該光検知部材
が検知する原稿領域は、原稿の横方向の最大サイ
ズとそれより一段階小さいサイズの原稿側端部に
挟まれた領域から、原稿の縦方向の中間サイズ二
つの原稿端部に挟まれた領域とを結ぶ領域である
ことを特徴とする原稿サイズ検知装置。[Claim for Utility Model Registration] In a copying machine that identifies the size of a document by irradiating the document with light from a light source of an exposure device through preliminary exposure scanning prior to copying, and guiding the reflected light to a light detection member. , the light detection member receives reflected light from the document through a hole formed in the light shielding plate, and the document area detected by the light detection member is the maximum size of the document in the horizontal direction and a size one step smaller than the maximum size of the document in the horizontal direction. A document size detection device characterized in that the area is a region connecting a region sandwiched between document side edges and a region sandwiched between two document edges of two intermediate sizes in the vertical direction of the document.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2543689U JPH02119654U (en) | 1989-03-06 | 1989-03-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2543689U JPH02119654U (en) | 1989-03-06 | 1989-03-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02119654U true JPH02119654U (en) | 1990-09-26 |
Family
ID=31246174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2543689U Pending JPH02119654U (en) | 1989-03-06 | 1989-03-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02119654U (en) |
-
1989
- 1989-03-06 JP JP2543689U patent/JPH02119654U/ja active Pending
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