JPH038336U - - Google Patents
Info
- Publication number
- JPH038336U JPH038336U JP6872989U JP6872989U JPH038336U JP H038336 U JPH038336 U JP H038336U JP 6872989 U JP6872989 U JP 6872989U JP 6872989 U JP6872989 U JP 6872989U JP H038336 U JPH038336 U JP H038336U
- Authority
- JP
- Japan
- Prior art keywords
- document
- document table
- holding member
- hinge
- receiving section
- 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 11
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 239000011521 glass Substances 0.000 description 1
Landscapes
- Holders For Sensitive Materials And Originals (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Facsimiles In General (AREA)
- Facsimile Scanning Arrangements (AREA)
Description
第１図はこの考案の一実施例の反射型フオトセ
ンサの配置例及び原稿押え部材開閉検知手段の構
成例を示す説明図、第２図は同じくその原稿検知
手段の構成例を示す説明図、第３図は同じくその
原稿台における検知点の配置例を示す平面図、第
４図は同じくその反射型フオトセンサの配置例及
び複写光学系の構成例を示す概略構成図、第５図
は同じくその制御部の構成例を示すブロツク図、
第６図乃至第８図はそれぞれこの考案の一実施例
の作用を示すフロー図、第９図は従来の反射型フ
オトセンサの配置例を示す説明図である。
１０……原稿台（コンタクトガラス）、１２…
…反射型フオトセンサ（原稿検知手段）、１２ａ
……ＬＥＤ（発光部）、１２ｂ……フオトトラン
ジスタ（受光部）、１３……原稿、１４……原稿
押え板（原稿押え部材）、１７……蝶番、２８…
…スイツチ、３０……マイクロコンピユータ（Ｃ
ＰＵ）（原稿有無判定手段）、Ｃ……発光部と受
光部の両光軸の内角２等分線、Ｎ……原稿台１０
の法線、Ｐ……検知点。
FIG. 1 is an explanatory diagram showing an example of the arrangement of a reflective photo sensor and an example of the configuration of the document holding member opening/closing detection means according to an embodiment of the invention; FIG. 2 is an explanatory diagram showing an example of the configuration of the document detection means; 3 is a plan view showing an example of the arrangement of detection points on the document table, FIG. 4 is a schematic configuration diagram showing an example of the arrangement of the reflective photo sensor and a configuration of the copying optical system, and FIG. 5 is a diagram showing the control thereof. A block diagram showing an example of the configuration of the section,
6 to 8 are flowcharts showing the operation of an embodiment of this invention, and FIG. 9 is an explanatory diagram showing an example of the arrangement of a conventional reflective photo sensor. 10... Original table (contact glass), 12...
...Reflection type photo sensor (document detection means), 12a
...LED (light emitting section), 12b...phototransistor (light receiving section), 13...document, 14...document holding plate (document holding member), 17...hinge, 28...
...Switch, 30...Microcomputer (C
PU) (original presence/absence determination means), C... A bisector of the interior angle of both the optical axes of the light emitting section and the light receiving section, N... Document table 10
Normal line, P...detection point.
Claims (1)
面を覆う閉位置と開放する開位置とに回動自在に
開閉する原稿押え部材とを備え、前記原稿台上に
載置されて前記原稿押え部材によつて押えられた
原稿の画像を読み取るか露光する装置において、 前記原稿台上の少なくとも所定の検知点をその
原稿台の裏面側から照射する発光部と、前記検知
点からの反射光を受光する受光部とからなる原稿
検知手段と、 前記原稿検知手段による受光部の受光量から検
知点における原稿の有無を判定する原稿有無判定
手段とからなり、 前記原稿検知手段の発光部と受光部の両光軸の
なす内角の２等分線を、前記蝶番の軸方向から見
て前記原稿台の法線に対して前記蝶番と反対側に
傾けて設けたことを特徴とする原稿検知装置。[Claims for Utility Model Registration] The document table comprises a transparent document table, and a document holding member that is rotatably opened and closed via a hinge between a closed position that covers the upper surface of the document table and an open position that opens the document table. In an apparatus for reading or exposing an image of a document placed on the document holding member and pressed by the document holding member, a light emitting unit that illuminates at least a predetermined detection point on the document table from the back side of the document table; , a document detection means comprising a light receiving section that receives reflected light from the detection point, and a document presence/absence determining means for determining the presence or absence of a document at the detection point from the amount of light received by the light receiving section by the document detection means; The bisector of the internal angle formed by the optical axes of the light emitting section and the light receiving section of the document detecting means is tilted to the opposite side of the hinge with respect to the normal to the document table when viewed from the axial direction of the hinge. A document detection device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6872989U JPH038336U (en) | 1989-06-13 | 1989-06-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6872989U JPH038336U (en) | 1989-06-13 | 1989-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH038336U true JPH038336U (en) | 1991-01-25 |
Family
ID=31603415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6872989U Pending JPH038336U (en) | 1989-06-13 | 1989-06-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH038336U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015075645A (en) * | 2013-10-09 | 2015-04-20 | セイコーエプソン株式会社 | Image reading apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60168140A (en) * | 1984-02-10 | 1985-08-31 | Fuji Xerox Co Ltd | Original size detecting device of copying machine |
| JPS62265642A (en) * | 1986-05-13 | 1987-11-18 | Mita Ind Co Ltd | Original detector |
-
1989
- 1989-06-13 JP JP6872989U patent/JPH038336U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60168140A (en) * | 1984-02-10 | 1985-08-31 | Fuji Xerox Co Ltd | Original size detecting device of copying machine |
| JPS62265642A (en) * | 1986-05-13 | 1987-11-18 | Mita Ind Co Ltd | Original detector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015075645A (en) * | 2013-10-09 | 2015-04-20 | セイコーエプソン株式会社 | Image reading apparatus |
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