JPS6481970A - Double-sided image forming device - Google Patents
Double-sided image forming deviceInfo
- Publication number
- JPS6481970A JPS6481970A JP62240122A JP24012287A JPS6481970A JP S6481970 A JPS6481970 A JP S6481970A JP 62240122 A JP62240122 A JP 62240122A JP 24012287 A JP24012287 A JP 24012287A JP S6481970 A JPS6481970 A JP S6481970A
- Authority
- JP
- Japan
- Prior art keywords
- original
- density
- rear end
- area
- double
- 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
- Counters In Electrophotography And Two-Sided Copying (AREA)
- Control Or Security For Electrophotography (AREA)
Abstract
PURPOSE:To faithfully reproduce an original image by omitting reverse printing when the density of a 1st surface at the rear end of an original in double-sided copying process is smaller than a certain specific value. CONSTITUTION:When a switch SW1 detects the rear end position of a passing copy form P, an original density detection sensor provided on an optical path for exposure scanning measures the original density of an area which is DELTAlbefore the rear end of the original. Further, a blank clamp 3 which is arranged nearby a photosensitive drum 2 lengthwise is used as a means which forms a reverse printed image. A density measuring means detects the density of a beltlike area of the original corresponding to a beltlike area at the rear end of the form P and when the detected density is smaller than the specific density, a reverse printing means is put in operation, but when not, the means is not operated. Consequently, the original image is reproduced faithfully except an original which is specially thick at its rear end part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62240122A JPS6481970A (en) | 1987-09-24 | 1987-09-24 | Double-sided image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62240122A JPS6481970A (en) | 1987-09-24 | 1987-09-24 | Double-sided image forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6481970A true JPS6481970A (en) | 1989-03-28 |
Family
ID=17054822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62240122A Pending JPS6481970A (en) | 1987-09-24 | 1987-09-24 | Double-sided image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6481970A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4751964B1 (en) * | 2011-02-18 | 2011-08-17 | 信幸 千葉 | Drink substitution timing detection system and cup with substitution signal transmission function suitable for use in this system |
| US8750742B2 (en) | 2010-12-24 | 2014-06-10 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus |
-
1987
- 1987-09-24 JP JP62240122A patent/JPS6481970A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8750742B2 (en) | 2010-12-24 | 2014-06-10 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus |
| JP4751964B1 (en) * | 2011-02-18 | 2011-08-17 | 信幸 千葉 | Drink substitution timing detection system and cup with substitution signal transmission function suitable for use in this system |
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