Image forming method comprising electrostatic transfer of developed image and corresponding image forming apparatus
First Claim
Patent Images
1. An image forming method comprising:
- (a) developing an electrostaic image formed on an electrostatic image-bearing member with a developer to form thereon a developed image, said developer comprising 100 wt. parts of a toner and 0.05 to 3 wt. parts of fine powder treated with silicon oil represented by the following formula;
##STR8## wherein R is alkyl having 1-3 carbon atoms;
R'"'"' is alkyl, halogen-substituted alkyl, substituted or unsubstituted phenyl;
R" is alkyl or alkoxy having 1-3 carbon atoms and m and n are each an integer; and
(b) electrostatically transferring the developed image on the electrostatic image-bearing member to a transfer material while pressing a transfer means supplied with a bias voltage against the electrostatic image-bearing member with the transfer material disposed between the electrostatic image-bearing member and the transfer means under a line pressure of 3 g/cm or higher, wherein said electrostatic image-bearing member having a curvature radius of no greater than 25 mm at the transfer position.
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Abstract
An image forming method, including the steps of: developing an electrostatic image formed on an electrostatic image-bearing member with a developer to form thereon thereon a developed image, the developer containing 100 wt. parts of a toner and 0.05 to 3 wt. parts of fine powder treated with a silicone oil or silicone varnish; and transferring the developed image on the electrostatic image-bearing member to a transfer material while causing a transfer device, such as a roller or belt, to contact the electrostatic image-bearing member by the medium of the transfer material under a line pressure of 3 g/cm or higher.
30 Citations
35 Claims
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1. An image forming method comprising:
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(a) developing an electrostaic image formed on an electrostatic image-bearing member with a developer to form thereon a developed image, said developer comprising 100 wt. parts of a toner and 0.05 to 3 wt. parts of fine powder treated with silicon oil represented by the following formula;
##STR8## wherein R is alkyl having 1-3 carbon atoms;
R'"'"' is alkyl, halogen-substituted alkyl, substituted or unsubstituted phenyl;
R" is alkyl or alkoxy having 1-3 carbon atoms and m and n are each an integer; and(b) electrostatically transferring the developed image on the electrostatic image-bearing member to a transfer material while pressing a transfer means supplied with a bias voltage against the electrostatic image-bearing member with the transfer material disposed between the electrostatic image-bearing member and the transfer means under a line pressure of 3 g/cm or higher, wherein said electrostatic image-bearing member having a curvature radius of no greater than 25 mm at the transfer position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An image forming apparatus comprising;
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(a) an electrostatic image-bearing member for carrying an electrostatic image; (b) means for developing the electrostatic image comprising a toner-carrying member, wherein the toner-carrying member carries thereon a developer comprising 100 wt. parts of a toner and 0.05 to 3 wt. parts of fine powder treated with silicone oil represented by the following formula;
##STR9## wherein R is alkyl having 1-3 carbon atoms;
R'"'"' is alkyl, halogen-substituted alkyl, substituted or unsubstituted phenyl;
R" is alkyl or alkoxy having 1-3 carbon atoms and m and n are each an integer; and(c) transfer means equipped with a bias voltage application means for electrostatically transferring the developed image on the electrostatic image-bearing member to a transfer material while pressing the transfer means supplied with a bias voltage against the electrostatic image-bearing member with the transfer material disposed between the electrostatic image-bearing member and the transfer means under a line pressure of 3 g/cm or higher, wherein said electrostatic image-bearing member having a curvature radius of no greater than 25 mm at the transfer portion. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A facsimile comprising an image forming apparatus and receiving means for receiving image information from a remote terminal;
- said image forming apparatus comprising;
(a) an electrostatic image-bearing member for carrying out an electrostatic image; (b) means for developing the electrostatic image comprising a toner-carrying member, wherein the toner-carrying member carries thereon a developer comprising 100 wt. parts of a toner and 0.05 to 3 wt. parts of fine powder treated with silicon oil represented by the following formula;
##STR10## wherein R is alkyl having 1-3 carbon atoms;
R'"'"' is alkyl, halogen-substituted alkyl, substituted or unsubstituted phenyl;
R" is alkyl or alkoxy having 1-3 carbon atoms and m and n are each an integer; and(c) transfer means equipped with a bias voltage application means for electrostatically transferring the developed image on the electrostatic image-bearing member to a transfer material while pressing the transfer means supplied with a bias voltage against the electrostatic image-bearing member with the transfer material disposed between the electrostatic image-bearing member and the transfer means under a line pressure of 3 g/cm or higher, wherein said electrostatic image-bearing member having a curvature radius of no greater than 25 mm at the transfer portion.
- said image forming apparatus comprising;
Specification