A transfer device comprises a freely rotatable transferring member contacting an image bearing member to form a transfer nip therebetween; a transfer bias applying member to apply a first bias created by superimposing an alternating current component on a direct current component to the transferring member to transfer a toner image borne on the image bearing member to a recording medium in the transfer nip; and an applicator to apply a protective agent to a surface of the transferring member.

Claims

19 · 3 independent · depth 5

19 granted claims

›1.independentA transfer device comprising:na freely rotatable transferring member contacting an image bearing member to form a transfer nip;a transfer bias applyin…+9

›2.↳ 1The transfer device as claimed in claim 1, wherein the applicator includes a rotatable application element in contact with both the protective agent a…d2+6

›9.↳ 1The transfer device as claimed in claim 1, wherein the protective agent is zinc stearate.d2

›10.↳ 1The transfer device as claimed in claim 1, wherein at least a surface of the transferring member is made of fluorine resin.d2

›11.independentAn image forming apparatus comprising:nan image bearing member; anda transfer device, comprising:na freely rotatable transferring member contacting an…+6

›18.independentAn image forming apparatus comprising:nan image bearing member;a transferring member contacting the image bearing member to form a transfer nip;a tran…+1

Classifications

5 codes

IPC · International Patent Classification

Section G — Physics

G03G21/00
G03G15/16
G03G15/20

USPC · US Patent Classification

399/314399/346

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Pendency

2.1 y

771 days filing → grant

Office actions

non-final + final

Responses

no RCE

Examiner

Walter L Lindsay, Jr.

art unit 2852 · TC 2800

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Citations: 64 back · 0 forward

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Priority chain

1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20130089363 A1	11 Apr 2013

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