JPS6443424A - Image forming apparatus - Google Patents
Image forming apparatusInfo
- Publication number
- JPS6443424A JPS6443424A JP19847887A JP19847887A JPS6443424A JP S6443424 A JPS6443424 A JP S6443424A JP 19847887 A JP19847887 A JP 19847887A JP 19847887 A JP19847887 A JP 19847887A JP S6443424 A JPS6443424 A JP S6443424A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- transport rollers
- rollers
- pair
- transport
- 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)
- Delivering By Means Of Belts And Rollers (AREA)
- Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
- Conveyance By Endless Belt Conveyors (AREA)
Abstract
PURPOSE:To prevent insertion error of a sheet by disposing a pair of switchback transport rollers capable of rotating normal and reverse directions in a sheet transport passage opened to the outside in a re-feed device and rotating the rollers in the discharge direction except re-feed operation. CONSTITUTION:In case of a both-sided copying mode, a sheet, one side of which is copied by a photoreceptor drum 10, a transfer charger 15 and so on, is transported between guide plates 81, 82 by a pair of normally rotating transport rollers 75 through a pair of discharge rollers 44 and a pair of transport rollers 74 and once stopped in the clamping state. Subsequently, the sheet is switchback- transported to a horizontal transport unit 60 by reversion of the paired transport rollers 75 to make a copy on the back side of the sheet. The paired transport rollers 75 are rotated in the direction of discharging a sheet to an opening 83 except for the case of re-feeding the sheet through the horizontal transport unit 60. Accordingly, even if a sheet enters in error at the opening portion 83 between the guide plates 81, 82, the sheet is discharged to the outside by the paired switchback transport rollers 75, so that an error in feeding a sheet to a work portion can be surely prevented.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19847887A JPS6443424A (en) | 1987-08-07 | 1987-08-07 | Image forming apparatus |
US07/184,502 US4928150A (en) | 1987-04-23 | 1988-04-21 | Copy apparatus having plural copy sheet discharge trays for different sized copy sheets |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19847887A JPS6443424A (en) | 1987-08-07 | 1987-08-07 | Image forming apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6443424A true JPS6443424A (en) | 1989-02-15 |
Family
ID=16391776
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19847887A Pending JPS6443424A (en) | 1987-04-23 | 1987-08-07 | Image forming apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6443424A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7080601B2 (en) | 2003-12-17 | 2006-07-25 | Hideyuki Hayashi | Yarn feeder |
-
1987
- 1987-08-07 JP JP19847887A patent/JPS6443424A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7080601B2 (en) | 2003-12-17 | 2006-07-25 | Hideyuki Hayashi | Yarn feeder |
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