Method and apparatus for printing image
AssigneeKabushiki Kaisha Toshiba
InventorHaruhi Oooka
Life of this patent
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Abstract
A method and an apparatus for printing an image on a print medium with a liquid developer which includes a liquid carrier and a toner dispersed in the liquid carrier. The image is printed by forming a toner image having the toner from the liquid developer, and transferring the toner image to the print medium under pressure. By adjusting a complex viscosity coefficient of the toner forming the toner image to be transferred to a value satisfying the formula: 1×104<η<1×106, wherein η represents the complex viscosity coefficient (Pa·s) of the toner, the toner image to be transferred to the print medium is controlled.
Claims19
A method of printing an image on a print medium with a liquid developer which comprises a liquid carrier and a toner dispersed in the liquid carrier, comprising:
- forming a toner image comprising the toner, from the liquid developer;
- transferring the toner image to the print medium under pressure;
- controlling the toner image to be transferred to the print medium, by adjusting a complex viscosity coefficient of the toner forming the toner image to be transferred, to a value satisfying the formula:
- 1×104<η<1×106, where η represents the complex viscosity coefficient (Pa·s) of the toner;
- pressing the toner image to the print medium;
- and
- keeping the print medium in contact with the toner image for a predetermined time period after the pressing of the toner image.
A method of printing an image on a print medium with a liquid developer which comprises a liquid carrier and a particulate toner dispersed in the liquid carrier, comprising:
- forming a toner image comprising the particulate toner, from the liquid developer;
- transferring the toner image to the print medium under pressure;
- controlling the toner image to be transferred to the print medium, by adjusting a complex viscosity coefficient of the particulate toner forming the toner image to be transferred, to a value that satisfies the formula:
- 1×104<η<1×106, where η represents the complex viscosity coefficient (Pa·s) of the particulate toner;
- pressing the toner image to the print medium;
- and
- keeping the print medium in contact with the toner image for a predetermined time period after the pressing of the toner image.
An apparatus for printing an image on a print medium with a liquid developer which comprises a liquid carrier and a toner dispersed in the liquid carrier, comprising:
- an image formation system which forms a toner image comprising the toner, from the liquid developer;
- a transfer mechanism which is arranged to transfer the toner image to the print medium under pressure;
- a temperature controller which controls the temperature of the toner image to be transferred to the print medium by adjusting a complex viscosity coefficient of the toner forming the toner image to be transferred to the print medium to a value satisfying the formula:
- 1×104<η<1×106, where η represents the complex viscosity coefficient (Pa·s) of the toner;
- a press member which presses the toner image to the print medium;
- and
- a keeping member which keeps the print medium in contact with the toner image for a predetermined time period after the toner image is pressed by the press member.
An apparatus for printing an image on a print medium with a liquid developer which comprises a liquid carrier and a toner dispersed in the liquid carrier, comprising:
- an image formation system which forms a toner image comprising the toner, from the liquid developer;
- and
- a transfer mechanism which is arranged to transfer the toner image to the print medium under pressure;
- wherein the transfer mechanism comprises:
- an image carrying member having a carrying surface which carries the toner image formed by the image formation system;
- a press member which presses the print medium to the toner image on the carrying surface;
- a contact keeping system which keeps the print medium in contact with the toner image on the carrying surface for a predetermined time period after the toner image is pressed by the press member;
- and
- a releaser configured to release the print medium from image carrying member.
Dependencies are inferred from the claim text.