Back to results
US 2026/0273978 A1Published application
Image forming method and image forming apparatus
OwnerToshiyuki KOBASHI, Hiroshi GOTOUinventors
Life of this patent
Estimating the term…
Abstract
An image forming method is provided that includes discharging a pretreatment liquid and an ink onto a recording medium by an inkjet method to form an image. The pretreatment liquid includes an aggregating agent, a landing time difference between a droplet of the pretreatment liquid and a droplet of the ink is 0.05 seconds or more and 2.0 seconds or less, and −5.0 mN/m≤σ1−σ2≤5.0 mN/m is satisfied, where σ1 is a dynamic surface tension of the pretreatment liquid and σ2 is a dynamic surface tension of the ink as measured at 25° C. and a lifetime of 150 ms.
Claims6
An image forming method comprising:
- discharging a pretreatment liquid and an ink onto a recording medium by an inkjet method to form an image,
- wherein the pretreatment liquid includes an aggregating agent,
- a landing time difference between a droplet of the pretreatment liquid and a droplet of the ink is 0.05 seconds or more and 2.0 seconds or less, and
- −5.0 mN/m≤σ1−σ2≤5.0 mN/m is satisfied, where σ1 is a dynamic surface tension of the pretreatment liquid and σ2 is a dynamic surface tension of the ink as measured at 25° C. and a lifetime of 150 ms.
1 more element
An image forming apparatus comprising:
- a head to discharge a pretreatment liquid on a recording medium by an inkjet method;
- and
- a head to discharge an ink on the recording medium by an inkjet method to form an image,
- wherein the pretreatment liquid includes an aggregating agent,
- a landing time difference between a droplet of the pretreatment liquid and a droplet of the ink is 0.05 seconds or more and 2.0 seconds or less, and
- −5.0 mN/m≤σ1-σ2≤5.0 mN/m is satisfied, where σ1 is a dynamic surface tension of the pretreatment liquid and σ2 is a dynamic surface tension of the ink as measured at 25° C. and a lifetime of 150 ms.
3 more elements
Dependencies are inferred from the claim text.