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US 9,068,094 B2Granted
Photopolymerizable inkjet ink, ink cartridge, and printer
AssigneeRicoh Company, Ltd.
InventorTakao Hiraoka
Life of this patent
Estimating the term…
Abstract
A photopolymerizable inkjet ink including: a photopolymerizable monomer having a Stimulation Index (SI value) of less than 3, where the Stimulation Index indicates the extent of sensitization as measured by a skin sensitization test based on Local Lymph Node Assay; and a phenol aromatic compound having two hydroxyl groups in the molecule thereof.
Claims18
A photopolymerizable inkjet ink comprising:
- at least one photopolymerizable monomer having a Stimulation Index of less than 3;
- and at least one phenol aromatic compound having two hydroxyl groups in a molecule thereof, wherein the ink contains 0.001 parts by mass to 1 part by mass of the phenol aromatic compound per 100 parts by mass of the photopolymerizable monomer, and wherein the Stimulation Index indicates an extent of sensitization measured by a skin sensitization test based on Local Lymph Node Assay.
An ink cartridge, comprising:
- a photopolymerizable inkjet ink;
- and
- a container, which houses the photopolymerizable inkjet ink,
- wherein the photopolymerizable inkjet ink comprises:
- at least one photopolymerizable monomer having a Stimulation Index of less than 3;
- and
- at least one phenol aromatic compound having two hydroxyl groups in a molecule thereof,
- wherein the Stimulation Index indicates an extent of sensitization measured by a skin sensitization test based on Local Lymph Node Assay.
5 more elements
A printer, comprising:
- an ink cartridge,
- wherein the ink cartridge comprises:
- photopolymerizable inkjet ink;
- and
- a container, which houses the photopolymerizable inkjet ink,
- wherein the photopolymerizable inkjet ink comprises:
- at least one photopolymerizable monomer having a Stimulation Index of less than 3;
- and
- at least one phenol aromatic compound having two hydroxyl group in a molecule thereof,
- wherein the Stimulation Index indicates an extent of sensitization measured by a skin sensitization test based on Local Lymph Node Assay.
7 more elements
Dependencies are inferred from the claim text.