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US 4,733,247 AGranted
Ink jet recording method in which the projected ink droplets have a Weber number of no more than 500
AssigneeCanon Kabushiki Kaisha
InventorsRyuichi Arai, Mamoru Sakaki
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Abstract
An ink-jet recording method includes projecting droplets of ink having a Weber number of no more than 500 toward a recording medium having thereon an ink receiving layer, thereby performing recording.
Claims8
An on-demand ink-jet recording method comprising the steps of:
- providing a recording medium which comprises a substrate and an ink receiving layer provided on the substrate, wherein the surface of the ink receiving layer has a Bekk smoothness of at least 100 sec. based on JIS P 8119;
- and
- projecting droplets of ink toward the ink receiving layer of the recording medium so as to form substantially circular dots thereon,
- wherein the Weber number (We) of the ink droplets, as represented by the following equation, is not more than 500:
- ##EQU3## where .rho. represents the density of the ink (g/cm.sup.3);
- d represents the diameter of the ink droplets (.mu.m);
- .nu. represents the velocity of the ink droplets (m/sec);
- and .gamma. represents the surface tension of the ink (dyne/cm).
5 more elements
An on-demand ink-jet recording method comprising the steps of:
- providing a recording medium having an ink-receiving layer on a substrate, wherein the surface of the ink receiving layer has Bekk smoothness of at least 100 sec. based on JIS P 8119;
- and
- projecting droplets of yellow, magenta, cyan and/or black ink toward the ink receiving layer of the recording medium so as to form substantially circular dots thereon,
- wherein the Weber number (We) of the ink droplets, as represented by the following formula, is not more than 500:
- ##EQU4## where .rho. represents the density of the ink (g/cm.sup.3);
- d represents the diameter of the ink droplets (.mu.m);
- .nu. represents the velocity of the ink droplets (m/sec);
- and .gamma. represents the surface tension of the ink (dyne/cm).
5 more elements
Dependencies are inferred from the claim text.