JPS5619066A - Sheet conveying roller pair - Google Patents

Sheet conveying roller pair

Info

Publication number
JPS5619066A
JPS5619066A JP5816280A JP5816280A JPS5619066A JP S5619066 A JPS5619066 A JP S5619066A JP 5816280 A JP5816280 A JP 5816280A JP 5816280 A JP5816280 A JP 5816280A JP S5619066 A JPS5619066 A JP S5619066A
Authority
JP
Japan
Prior art keywords
roller
outer diameter
rollers
sheet
roller pair
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
Application number
JP5816280A
Other languages
Japanese (ja)
Other versions
JPS5938588B2 (en
Inventor
Toyokazu Satomi
Toshiyuki Ogawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP55058162A priority Critical patent/JPS5938588B2/en
Publication of JPS5619066A publication Critical patent/JPS5619066A/en
Publication of JPS5938588B2 publication Critical patent/JPS5938588B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To provide each titled roller easy to prepare at low cost with precision, by covering each core roller having outer diameter tapering from the middle toward both the ends with an elastic body having uniform hardness so as to render its outer diameter constant.
CONSTITUTION: Core roller 12 is like a beer barrel, and its diameter tapers from the middle 12a toward both the end 12b, and roller 12 is covered with specified elastic rubber layer 13 so as to render its outer diameter constant. Roller 11 is thus formed, and repulsion elasticity in both its ends is higher than that in the middle. Use of such a roller for at least one side of rollers enables a sheet to be conveyed without wrinkling. Such rollers can be prepared easily at low cost, and its precision can be easily enhanced, and since the repulsion elasticity of these pair of rollers continuously changes, wrinkling of the sheet can be prevented.
COPYRIGHT: (C)1981,JPO&Japio
JP55058162A 1980-05-01 1980-05-01 Roller pair for sheet conveyance Expired JPS5938588B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55058162A JPS5938588B2 (en) 1980-05-01 1980-05-01 Roller pair for sheet conveyance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55058162A JPS5938588B2 (en) 1980-05-01 1980-05-01 Roller pair for sheet conveyance

Publications (2)

Publication Number Publication Date
JPS5619066A true JPS5619066A (en) 1981-02-23
JPS5938588B2 JPS5938588B2 (en) 1984-09-18

Family

ID=13076286

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55058162A Expired JPS5938588B2 (en) 1980-05-01 1980-05-01 Roller pair for sheet conveyance

Country Status (1)

Country Link
JP (1) JPS5938588B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58140933U (en) * 1982-03-16 1983-09-22 株式会社リコー Pressing roller
JPH02173687A (en) * 1988-12-26 1990-07-05 Canon Inc Fixing device
US5701547A (en) * 1992-09-28 1997-12-23 Canon Kabushiki Kaisha Sheet feeding apparatus having means for determining the leading edge of a sheet
US7107681B2 (en) * 2000-06-22 2006-09-19 Ricoh Company, Ltd. Heating roller, method of producing the heating roller, and heating device, fixing device and image forming apparatus using the heating roller

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58140933U (en) * 1982-03-16 1983-09-22 株式会社リコー Pressing roller
JPH02173687A (en) * 1988-12-26 1990-07-05 Canon Inc Fixing device
US5701547A (en) * 1992-09-28 1997-12-23 Canon Kabushiki Kaisha Sheet feeding apparatus having means for determining the leading edge of a sheet
US7107681B2 (en) * 2000-06-22 2006-09-19 Ricoh Company, Ltd. Heating roller, method of producing the heating roller, and heating device, fixing device and image forming apparatus using the heating roller

Also Published As

Publication number Publication date
JPS5938588B2 (en) 1984-09-18

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