Image-forming method
First Claim
Patent Images
1. An image-forming method comprising:
- a charging step of charging a surface of a photosensitive member;
an electrostatic latent image-forming step of forming an electrostatic latent image on the surface of the charged photosensitive member;
a developing step of developing the electrostatic latent image with a toner to form a toner image;
a primary transfer step of transferring the toner image to a surface of an intermediate transfer member;
a cleaning step of removing a residual toner that remains on the surface of the photosensitive member after the primary transfer step;
a secondary transfer step of transferring to a transfer material the toner image that has been transferred to the surface of the intermediate transfer member; and
a fixing step of fixing to the transfer material the toner image that has been transferred to the transfer material,whereinwhen θ
(A) is a contact angle relative to water of the surface of the photosensitive member and θ
(B) is a contact angle relative to water of the surface of the intermediate transfer member, θ
(B) is from 100°
to 150° and
θ
(A) and θ
(B) satisfy the relationship in the following formula (1);
−
70°
θ
(A)−
θ
(B)<
0°
(1)the toner has a toner particle that contains a binder resin; and
a contact angle relative to water of a surface of a pellet molding of the toner is from 60°
to 80°
.
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Abstract
The present invention is an image-forming method in which, when θ(A) is the contact angle relative to water of a surface of a photosensitive member and θ(B) is the contact angle relative to water of a surface of an intermediate transfer member, θ(B) is from 100° to 150°; θ(A) and θ(B) satisfy −70°≦θ(A)−θ(B)<0°; the toner has a toner particle that contains a binder resin; and the contact angle relative to water of a surface of a pellet molding of the toner is from 60° to 80°.
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Citations
5 Claims
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1. An image-forming method comprising:
-
a charging step of charging a surface of a photosensitive member; an electrostatic latent image-forming step of forming an electrostatic latent image on the surface of the charged photosensitive member; a developing step of developing the electrostatic latent image with a toner to form a toner image; a primary transfer step of transferring the toner image to a surface of an intermediate transfer member; a cleaning step of removing a residual toner that remains on the surface of the photosensitive member after the primary transfer step; a secondary transfer step of transferring to a transfer material the toner image that has been transferred to the surface of the intermediate transfer member; and a fixing step of fixing to the transfer material the toner image that has been transferred to the transfer material, wherein when θ
(A) is a contact angle relative to water of the surface of the photosensitive member and θ
(B) is a contact angle relative to water of the surface of the intermediate transfer member, θ
(B) is from 100°
to 150° and
θ
(A) and θ
(B) satisfy the relationship in the following formula (1);
−
70°
θ
(A)−
θ
(B)<
0°
(1)the toner has a toner particle that contains a binder resin; and a contact angle relative to water of a surface of a pellet molding of the toner is from 60°
to 80°
.- View Dependent Claims (2, 3, 4, 5)
the surface layer has in a thickness direction thereof a matrix-domain structure having a matrix and a domain; the matrix contains a binder resin; the domain contains a perfluoropolyether; and microhardness of the surface of the intermediate transfer member as measured with an ultramicrohardness tester is at least 50 MPa.
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4. The image-forming method according to claim 1, wherein the toner particle further comprises:
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a wax; and a polymer that has a structure provided by reaction of a vinylic resin component and a hydrocarbon compound.
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5. The image-forming method according to claim 1, wherein
the toner particle further comprises a wax; -
the toner further comprises an external additive; and the toner satisfies the relationship in the following formula (2)
1.05≦
P1/P2≦
2.00
(2)(in formula (2), P1=Pa/Pb and P2=Pc/Pd) where Pa is a maximum absorption peak intensity in a range from 2843 cm−
1 to 2853 cm−
1 and Pb is a maximum absorption peak intensity in a range from 1713 cm−
1 to 1723 cm−
1, in the FT-IR spectrum measured using the ATR method, Ge for the ATR crystal, and an angle of incidence for infrared radiation of 45°
, andPc is a maximum absorption peak intensity in a range from 2843 cm−
1 to 2853 cm−
1 and Pd is a maximum absorption peak intensity in a range from 1713 cm−
1 to 1723 cm−
1, in the FT-IR spectrum measured using the ATR method, KRS5 for the ATR crystal, and an angle of incidence for infrared radiation of 45°
.
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Specification
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Current AssigneeCanon Ayutthaya Limited (Canon Inc.)
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Original AssigneeCanon Ayutthaya Limited (Canon Inc.)
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InventorsKanno, Ichiro, Hashimoto, Takeshi, Kaneko, Hideki, Hama, Masayuki, Komatsu, Nozomu, Kobori, Takakuni, Fujikawa, Hiroyuki
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Primary Examiner(s)Lindsay, Jr., Walter L
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Assistant Examiner(s)Eley, Jessica L
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Application NumberUS14/879,607Publication NumberTime in Patent Office228 DaysField of Search399/130, 399/341, 430/56, 430/58.2US Class Current1/1CPC Class CodesG03G 15/06 for developingG03G 15/14 for transferring a pattern ...G03G 15/162 details of the the intermed...G03G 15/75 Details relating to xerogra...G03G 9/08704 PolyalkenesG03G 9/08708 Copolymers of styreneG03G 9/08711 with esters of acrylic or m...G03G 9/08755 PolyestersG03G 9/08782 WaxesG03G 9/08797 characterised by their phys...
