JPH046053U - - Google Patents
Info
- Publication number
- JPH046053U JPH046053U JP4522990U JP4522990U JPH046053U JP H046053 U JPH046053 U JP H046053U JP 4522990 U JP4522990 U JP 4522990U JP 4522990 U JP4522990 U JP 4522990U JP H046053 U JPH046053 U JP H046053U
- Authority
- JP
- Japan
- Prior art keywords
- recording paper
- light
- forming apparatus
- image forming
- conveyed
- 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
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 239000003094 microcapsule Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Photographic Developing Apparatuses (AREA)
Description
第１図は本考案の実施例の側断面図、第２図は
本考案の実施例の回路図、第３図は本考案の実施
例の動作を示すフローチヤート、第４図は本考案
を適用する画像形成装置の側面図である。
Ｃ……制御部、１２……マイクロカプセル紙（
感光記録媒体）、２８……顕色紙（記録用紙）、
４０……表裏検出センサ（記録用紙判別装置）、
４１……発光素子（発光部）、４２……受光素子
（受光部）、４６……光路ガイド。
Fig. 1 is a side sectional view of an embodiment of the invention, Fig. 2 is a circuit diagram of an embodiment of the invention, Fig. 3 is a flowchart showing the operation of an embodiment of the invention, and Fig. 4 is a diagram of the embodiment of the invention. FIG. 2 is a side view of an image forming apparatus to which the present invention is applied. C...Control unit, 12...Microcapsule paper (
photosensitive recording medium), 28... developer paper (recording paper),
40... Front/back detection sensor (recording paper discrimination device),
41... Light emitting element (light emitting section), 42... Light receiving element (light receiving section), 46... Optical path guide.
Claims (1)
し、露光後、搬送される記録用紙に圧力現像して
ハードコピーを得る画像形成装置における記録用
紙判別装置において、 発光部から発せられた光を前記搬送される記録
用紙で反射させて当該反射光を受光部で受け、発
光量と受光量に基づいて算出される反射率に基づ
いて前記記録用紙の表裏を判別する制御部を備え
、この制御部は、前記受光部が反射光を受光する
際に、前記記録用紙の搬送速度を遅く又は停止す
るように制御することを特徴とする画像形成装置
における記録用紙判別装置。[Scope of Claim for Utility Model Registration] In a recording paper discrimination device in an image forming apparatus that exposes a photosensitive recording medium with image information based on a manuscript, and after exposure, pressure develops the recording paper to be conveyed to obtain a hard copy, The light emitted from the unit is reflected by the conveyed recording paper, the reflected light is received by a light receiving unit, and the front and back of the recording paper are determined based on the reflectance calculated based on the amount of light emitted and the amount of received light. A recording paper discriminating device in an image forming apparatus, comprising a control section, the control section controlling the conveyance speed of the recording paper to slow down or stop when the light receiving section receives reflected light. .
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4522990U JPH046053U (en) | 1990-04-27 | 1990-04-27 | |
| US07/692,912 US5122830A (en) | 1990-04-27 | 1991-04-29 | Image recording apparatus having front/rear sheet face sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4522990U JPH046053U (en) | 1990-04-27 | 1990-04-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH046053U true JPH046053U (en) | 1992-01-21 |
Family
ID=31559217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4522990U Pending JPH046053U (en) | 1990-04-27 | 1990-04-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH046053U (en) |
-
1990
- 1990-04-27 JP JP4522990U patent/JPH046053U/ja active Pending
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