WO1987007402A3 - Roller transfer apparatus having an extended nip exhibiting low pressure - Google Patents

Roller transfer apparatus having an extended nip exhibiting low pressure Download PDF

Info

Publication number
WO1987007402A3
WO1987007402A3 PCT/US1987/001117 US8701117W WO8707402A3 WO 1987007402 A3 WO1987007402 A3 WO 1987007402A3 US 8701117 W US8701117 W US 8701117W WO 8707402 A3 WO8707402 A3 WO 8707402A3
Authority
WO
WIPO (PCT)
Prior art keywords
transfer
nip
roller
transfer apparatus
low pressure
Prior art date
Application number
PCT/US1987/001117
Other languages
French (fr)
Other versions
WO1987007402A2 (en
Inventor
William Y Fowlkes
Theodore H Morse
Robert C Storey
James F Paxon
Original Assignee
Eastman Kodak Co
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
Priority claimed from US07/040,388 external-priority patent/US4796047A/en
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to DE19873780592 priority Critical patent/DE3780592T2/en
Publication of WO1987007402A2 publication Critical patent/WO1987007402A2/en
Publication of WO1987007402A3 publication Critical patent/WO1987007402A3/en

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
    • G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
    • G03G15/1605—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using at least one intermediate support
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
    • G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
    • G03G15/1665—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer by introducing the second base in the nip formed by the recording member and at least one transfer member, e.g. in combination with bias or heat
    • G03G15/167—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer by introducing the second base in the nip formed by the recording member and at least one transfer member, e.g. in combination with bias or heat at least one of the recording member or the transfer member being rotatable during the transfer

Abstract

Roller transfer apparatus of simplified construction which has an extended transfer nip exhibiting low pressure for effecting efficient transfer of marking particle images from a dielectric support (22) with a substantial reduction in image transfer defects. In such transfer apparatus, the dielectric support in the form of a web (22) is supported by a mechanism (24, 26) offset relative to the transfer roller (12) in an upstream and/or downstream direction to position the web (22) relative to the transfer roller (12) to establish an extended contact nip zone with a low nip pressure. As an example, the support mechanism includes a pair of spaced rollers (24, 26) respectively offset relative to the transfer roller (12) in an upstream and downstream direction to provide a nip zone with a dimension of at least 0.01 m measured in the direction of roller rotation and a nip pressure in such zone of less than 2 x 104 Pa.
PCT/US1987/001117 1986-05-27 1987-05-15 Roller transfer apparatus having an extended nip exhibiting low pressure WO1987007402A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19873780592 DE3780592T2 (en) 1986-05-27 1987-05-15 ROLL TRANSFER DEVICE WITH EXTENDED CONTACT ZONE THAT PRESENTS LOW PRESSURE.

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US86717986A 1986-05-27 1986-05-27
US867,179 1986-05-27
US2900687A 1987-03-23 1987-03-23
US029,006 1987-03-23
US07/040,388 US4796047A (en) 1987-03-23 1987-04-20 Roller transfer apparatus having an extended nip exhibiting low pressure
US040,388 1987-04-20

Publications (2)

Publication Number Publication Date
WO1987007402A2 WO1987007402A2 (en) 1987-12-03
WO1987007402A3 true WO1987007402A3 (en) 1987-12-17

Family

ID=27363386

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1987/001117 WO1987007402A2 (en) 1986-05-27 1987-05-15 Roller transfer apparatus having an extended nip exhibiting low pressure

Country Status (4)

Country Link
EP (1) EP0271531B1 (en)
JP (1) JPS63503410A (en)
DE (1) DE3780592T2 (en)
WO (1) WO1987007402A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8802512A (en) * 1988-10-13 1990-05-01 Oce Nederland Bv METHOD AND APPARATUS FOR TRANSFERRING A POWDER IMAGE CONTAINING ELECTROSTATICALLY CHARGED DEVELOPING POWDER FROM AN IMAGING MEDIUM TO AN IMAGE RECEIVING MEDIA

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB851384A (en) * 1957-02-06 1960-10-19 Grinten Chem L V D Process and apparatus for making pigment image records and pigment image records thus made
US3942888A (en) * 1975-02-06 1976-03-09 Xerox Corporation Stepped transfer roller
US3993021A (en) * 1973-06-08 1976-11-23 Minnesota Mining And Manufacturing Company Transfer device
US4367942A (en) * 1980-03-26 1983-01-11 Fuji Photo Film Co., Ltd. Xerographic copying machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5463837A (en) * 1977-10-31 1979-05-23 Ricoh Co Ltd Transfer device for copying machine for zerography
JPS56167165A (en) * 1980-05-27 1981-12-22 Konishiroku Photo Ind Co Ltd Electrostatic recorder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB851384A (en) * 1957-02-06 1960-10-19 Grinten Chem L V D Process and apparatus for making pigment image records and pigment image records thus made
US3993021A (en) * 1973-06-08 1976-11-23 Minnesota Mining And Manufacturing Company Transfer device
US3942888A (en) * 1975-02-06 1976-03-09 Xerox Corporation Stepped transfer roller
US4367942A (en) * 1980-03-26 1983-01-11 Fuji Photo Film Co., Ltd. Xerographic copying machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Volume 6, No. 53 (P-109) (931), 8 April 1982, see the whole Abstract, & JP, A, 56167165 (Konishiroku Shashin Kogyo K.K.) 22 December 1981 *

Also Published As

Publication number Publication date
JPS63503410A (en) 1988-12-08
EP0271531B1 (en) 1992-07-22
EP0271531A1 (en) 1988-06-22
DE3780592D1 (en) 1992-08-27
WO1987007402A2 (en) 1987-12-03
DE3780592T2 (en) 1993-03-11

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