EP1091262A3 - Toner supply roll and production method therefore - Google Patents

Toner supply roll and production method therefore Download PDF

Info

Publication number
EP1091262A3
EP1091262A3 EP00121843A EP00121843A EP1091262A3 EP 1091262 A3 EP1091262 A3 EP 1091262A3 EP 00121843 A EP00121843 A EP 00121843A EP 00121843 A EP00121843 A EP 00121843A EP 1091262 A3 EP1091262 A3 EP 1091262A3
Authority
EP
European Patent Office
Prior art keywords
sponge layer
toner
supply roll
toner supply
openings
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.)
Withdrawn
Application number
EP00121843A
Other languages
German (de)
French (fr)
Other versions
EP1091262A2 (en
Inventor
Mitsuyoshi Kondo
Kadai Takeyama
Akitoshi Nozawa
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.)
Sumitomo Riko Co Ltd
Original Assignee
Sumitomo Riko 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 Sumitomo Riko Co Ltd filed Critical Sumitomo Riko Co Ltd
Publication of EP1091262A2 publication Critical patent/EP1091262A2/en
Publication of EP1091262A3 publication Critical patent/EP1091262A3/en
Withdrawn legal-status Critical Current

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
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
    • G03G15/0818—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by the structure of the donor member, e.g. surface properties
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/08—Details of powder developing device not concerning the development directly
    • G03G2215/0855—Materials and manufacturing of the developing device
    • G03G2215/0858—Donor member
    • G03G2215/0863—Manufacturing

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

A toner supply roll comprises a shaft (1) and a soft polyurethane sponge layer (2) provided on an outer circumferential surface of the shaft, wherein not less than 90% of cell walls defining boundaries between respective adjacent cells have openings. The soft polyurethane sponge layer of the toner supply roll is of an open-cell foam structure in which the cells are three-dimensionally connected to one another via the openings in the cell walls, so that air contained in the sponge layer smoothly flows out when the sponge layer is depressed. Therefore, the sponge layer has a lower hardness than a soft polyurethane sponge layer of a closed-cells foam structure. Since not less than 90% of the cell walls defining the boundaries between the respective adjacent cells have openings, toner fluidity can properly be maintained. Therefore, the toner supply roll can minimise degradation of the toner during prolonged use and stably maintain toner scrapability and toner supplying capability, thereby ensuring formation of high quality images for an extended period of time.
EP00121843A 1999-10-08 2000-10-06 Toner supply roll and production method therefore Withdrawn EP1091262A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP28795599 1999-10-08
JP28795599A JP2001109251A (en) 1999-10-08 1999-10-08 Toner supply roll and its manufacturing method

Publications (2)

Publication Number Publication Date
EP1091262A2 EP1091262A2 (en) 2001-04-11
EP1091262A3 true EP1091262A3 (en) 2004-01-14

Family

ID=17723917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00121843A Withdrawn EP1091262A3 (en) 1999-10-08 2000-10-06 Toner supply roll and production method therefore

Country Status (2)

Country Link
EP (1) EP1091262A3 (en)
JP (1) JP2001109251A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5055032B2 (en) * 2007-06-14 2012-10-24 キヤノン化成株式会社 Method for producing polyurethane foam roller
JP4402137B2 (en) 2007-06-29 2010-01-20 キヤノン株式会社 Image forming apparatus, developing device and cartridge
JP2009009035A (en) 2007-06-29 2009-01-15 Canon Inc Developing device and cartridge

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0597444A1 (en) * 1992-11-09 1994-05-18 Konica Corporation Toner guide roller for image-forming process and apparatus applied therewith
US5548382A (en) * 1989-08-01 1996-08-20 Fujitsu Limited Developing apparatus for improving the durability of the latent image holding member
EP0789285A2 (en) * 1996-02-06 1997-08-13 Tokai Rubber Industries, Ltd. Toner supply roll having openings in skin layer of porous cylindrical polyurethane sponge structure, and method of producing the same
JPH11230157A (en) * 1998-02-20 1999-08-27 Tokai Rubber Ind Ltd Urethane sponge roll and manufacture thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5548382A (en) * 1989-08-01 1996-08-20 Fujitsu Limited Developing apparatus for improving the durability of the latent image holding member
EP0597444A1 (en) * 1992-11-09 1994-05-18 Konica Corporation Toner guide roller for image-forming process and apparatus applied therewith
EP0789285A2 (en) * 1996-02-06 1997-08-13 Tokai Rubber Industries, Ltd. Toner supply roll having openings in skin layer of porous cylindrical polyurethane sponge structure, and method of producing the same
JPH11230157A (en) * 1998-02-20 1999-08-27 Tokai Rubber Ind Ltd Urethane sponge roll and manufacture thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 13 30 November 1999 (1999-11-30) *

Also Published As

Publication number Publication date
JP2001109251A (en) 2001-04-20
EP1091262A2 (en) 2001-04-11

Similar Documents

Publication Publication Date Title
EP0789285A3 (en) Toner supply roll having openings in skin layer of porous cylindrical polyurethane sponge structure, and method of producing the same
EP0892320A3 (en) Toner supply roll including porous cylindrical polyurethane sponge structure having skin layer having openings and alternate protrusions an recesses, and method of producing the same
WO1989002833A1 (en) Inking device and production thereof
MXPA03002648A (en) Method and mould for manufacturing a moulded article comprising at least an elastomeric polyurethane skin.
EP0843231A3 (en) Charging member, charging device and process cartridge detachably mountable to image forming apparatus
CN1101946C (en) Foamed rotary member having rotation axis direction according with major axis direction of cell, and developing device using foamed rotary member as toner supplying rotary member
TW200736373A (en) Polishing pad
EP1091262A3 (en) Toner supply roll and production method therefore
US6655746B1 (en) Paint roller and its production process
EP1036632A3 (en) Method and system of manufacturing slurry for polishing, and method and system of manufacturing semiconductor devices
WO2001044352A3 (en) Method for producing soft to semirigid polyurethane integral foamed materials
EP0841599A3 (en) Developing device
EP0930220A3 (en) Sheathing material for a construction machine and method for producing the same
EP0364653B1 (en) Inking cylinder used in a printing apparatus and method for producing the inking cylinder
CN211249558U (en) Buffer polishing pad
JP3620592B2 (en) Transfer roller and transfer device
JP5142423B2 (en) Toner supply roller and image forming apparatus using the same
JP5610957B2 (en) Method for producing polyurethane foam roller
JP5620221B2 (en) Lubricant application roller
CN217837437U (en) Automatic big ball grinding machine with automatic feeding and discharging structure
JPH0796298B2 (en) Ink supply device for printing machine
JP2004233578A (en) Roller and method for manufacturing it
CN109454991A (en) A kind of gravure ink slot that ratio of printing ink transfer can be improved
JP2001051492A5 (en)
CN211641946U (en) Multi-hardness automobile seat

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20001020

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

AKX Designation fees paid

Designated state(s): DE FR GB

18W Application withdrawn

Effective date: 20040902