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US 8,926,080 B2Granted
Formaldehyde-free inkjet compositions and processes
AssigneeKornit Digital Ltd.
InventorsJacob Mozel, Jacob Mann
Life of this patent
Estimating the term…
Abstract
Disclosed are a process for inkjet printing color images on various substrates using a formaldehyde-free crosslinking agent in the ink composition, which is therefore devoid of formaldehyde emission and suitable for health-aware manufacturing practices, as well as objects having images and designs printed thereon which are devoid of formaldehyde and therefore suitable for use by infants.
Claims25
A process of direct inkjet printing an image on a surface of an object, the process comprising:
- contacting at least a part of the surface with a wetting composition so as to provide a wet part of the surface, said wetting composition forming a part of a multi-part liquid ink composition and comprises a property-adjusting agent and a first carrier;
- and inkjet printing a second part of said multi-part liquid ink composition directly on said wet part of the surface, so as to form the image on said wet part of the surface;
- or
- contacting at least a part of the surface with a wetting composition so as to provide a wet part of the surface, said wetting composition comprises a first carrier;
- inkjet printing a first part of a multi-part ink composition directly on said wet part of the surface, said first part comprises a property-adjusting agent and a first carrier;
- and inkjet printing a second part of said multi-part liquid ink composition directly on said wet part of the surface so as to form the image on said wet part of the surface;
- or
- inkjet printing a first part of a multi-part ink composition directly on a part of the surface, said first pan comprises a property-adjusting agent and a first carrier;
- and inkjet printing a second part of said multi-part liquid ink composition directly on said part of the surface, so as to form the image on said part of the surface,
- wherein said second part comprises an emulsified property-sensitive agent, a colorant, a formaldehyde-free crosslinking agent, a co-polymerizable agent and a second carrier, whereas said second part congeals upon contact with said property-adjusting agent when said property-adjusting agent and said second part converge on the substrate;
- thereby forming the image.
8 more elements
A process of direct inkjet printing an image on a surface of an object using a multi-part ink composition, the process comprising:
- contacting at least a part of the surface with a first part of the ink composition which comprises a property-adjusting agent and a first carrier so as to provide a wet part of the surface;
- inkjet printing a third part of the ink composition which comprises an emulsified property-sensitive agent, a dispersed metal oxide, a co-polymerizable agent, a formaldehyde-free crosslinking agent and a third carrier, whereas said third part congeals upon contact with said first part;
- and
- inkjet printing a second part of the ink composition on said wet part of the surface, so as to form the image on said part of the surface, said second part comprises an emulsified property-sensitive agent, a formaldehyde-free crosslinking agent, a co-polymerizable agent, a colorant and a second carrier, whereas said second part congeals upon contact with said first part;
- thereby forming the image.
2 more elements
Dependencies are inferred from the claim text.