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US 8,013,051 B2Granted
Liquid composition, image forming method, cartridge, recording unit and ink jet recording apparatus
AssigneeCanon Kabushiki Kaisha
InventorsYuko Takada, Masashi Tsujimura, Katsuhiro Shirota, Shinichi Hakamada, Maiko Yamada, Sayoko Harigaya
Life of this patent
Estimating the term…
Abstract
A liquid composition which can achieve superior scratch resistance of images at such a level that coloring materials are hardly scraped off even when images are scratched with finger nails under application of such strong pressure as to scratch a recording medium at its non-recorded areas. The liquid composition contains at least a modified siloxane compound having specific structure and a polymer whose acid value and hydrogen bond parameter (δh) are specified.
Claims17
A liquid composition comprising:
- a modified siloxane compound;
- water;
- and
- a polymer,
- wherein the liquid composition contains no coloring material,
- wherein the content (% by mass) of water in the liquid composition is from 50.0% by mass or more to 95.0% by mass or less based on the total mass of the liquid composition,
- wherein the modified siloxane compound is at least one selected from the group consisting of a modified siloxane compound represented by the following Formula (1), a modified siloxane compound represented by the following Formula (2), and a modified siloxane compound represented by the following Formula (3), and
- wherein the polymer is at least one selected from the group consisting of a polymer A which has an acid value of from 90 mgKOH/g or more to 150 mgKOH/g or less and in which a hydrogen bond parameter (δh) of the polymer that is obtained by the solubility parameters of monomers constituting the polymer is from 1.0 cal0.5/cm1.5 or more to 3.7 cal0.5/cm1.5 or less, and a polymer B which has an acid value of from more than 150 mgKOH/g to 200 mgKOH/g or less and in which a hydrogen bond parameter (δh) of the polymer that is obtained by the solubility parameters of monomers constituting the polymer is from 1.0 cal0.5/cm1.5 or more to 1.5 cal0.5/cm1.5 or less:
- where the modified siloxane compound represented by Formula (1) has a weight average molecular weight of from 8,000 or more to 30,000 or less;
- in Formula (1), R1 is an alkylene group having 1 to 20 carbon atom(s), R2 is a hydrogen atom or an alkyl group having 1 to 20 carbon atom(s), m is from 1 or more to 250 or less, n is from 1 or more to 100 or less, a is from 1 or more to 100 or less, and b is from 0 or more to 100 or less;
- where the modified siloxane compound represented by Formula (2) has a weight average molecular weight of from 8,000 or more to less than 50,000;
- in Formula (2), R3s are each independently a hydrogen atom or an alkyl group having 1 to 20 carbon atom(s), R4s are each independently an alkylene group having 1 to 20 carbon atom(s), p is from 1 or more to 450 or less, c is from 1 or more to 250 or less, and d is from 0 or more to 100 or less;
- and
- where the modified siloxane compound represented by Formula (3) has a weight average molecular weight of from 8,000 or more to less than 50,000 and an HLB of from 1 or more to less than 7;
- in Formula (3), R5s are each independently a hydrogen atom or an alkyl group having 1 to 20 carbon atom(s), R6 is an alkylene group having 1 to 20 carbon atom(s), q is from 1 or more to 100 or less, r is from 1 or more to 100 or less, e is from 1 or more to 100 or less, and f is from 0 or more to 100 or less.
12 more elements
Dependencies are inferred from the claim text.