JPS648155A - Sheet transfer device in image forming apparatus - Google Patents
Sheet transfer device in image forming apparatusInfo
- Publication number
- JPS648155A JPS648155A JP62163220A JP16322087A JPS648155A JP S648155 A JPS648155 A JP S648155A JP 62163220 A JP62163220 A JP 62163220A JP 16322087 A JP16322087 A JP 16322087A JP S648155 A JPS648155 A JP S648155A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- roller
- rollers
- feed
- peripheral speed
- 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.)
- Granted
Links
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
Abstract
PURPOSE:To restrain a passing sheet from creasing, by drivably and rotatably providing a pair of upper and lower sheet feed rollers having sheet feed surfaces with different friction coefficients, and by setting the peripheral speed of one of the rollers which has a lower friction coefficient, to a value slightly higher than that of the other. CONSTITUTION:The rotational speeds of first and second rollers 24, 25 are set such that the peripheral speed V2 of the second roller 25 having a sheet feed surfaces S2 with a higher friction coefficient to a predetermined paper feed speed, and the peripheral speed V1 of the first roller 24 having a sheet feed surface S1 with a lower friction coefficient is slightly higher than that of the second roller 25. Accordingly, since the paper feed speed of a sheet depends upon the peripheral speed V2 of the second roller 25 having the higher frictional coefficient, the first roller 24 rotates slipping on the surface of the sheet by the difference between the peripheral speeds of both rollers so as to feed the sheet in such a condition that a stretching force is applied onto the sheet at a part slipping over the roller. Accordingly, it is possible to eliminate the cause of generation of creases in the sheet itself, thereby it is possible to restrain the sheet from creasing during passing between both rollers 24, 25.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62163220A JPH0739298B2 (en) | 1987-06-30 | 1987-06-30 | Sheet conveying device in image forming apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62163220A JPH0739298B2 (en) | 1987-06-30 | 1987-06-30 | Sheet conveying device in image forming apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS648155A true JPS648155A (en) | 1989-01-12 |
JPH0739298B2 JPH0739298B2 (en) | 1995-05-01 |
Family
ID=15769594
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62163220A Expired - Lifetime JPH0739298B2 (en) | 1987-06-30 | 1987-06-30 | Sheet conveying device in image forming apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0739298B2 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62201764A (en) * | 1986-02-28 | 1987-09-05 | Mita Ind Co Ltd | Image-transferred sheet conveying device for copying machine |
-
1987
- 1987-06-30 JP JP62163220A patent/JPH0739298B2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62201764A (en) * | 1986-02-28 | 1987-09-05 | Mita Ind Co Ltd | Image-transferred sheet conveying device for copying machine |
Also Published As
Publication number | Publication date |
---|---|
JPH0739298B2 (en) | 1995-05-01 |
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