A $299, E320, Laser printer is well suited for offices with multiple users and would do fine at the end of a small network. This cheap printer measures .7 by 15 by 14.2 inches, easily fitting on the corner of a desk. Printer consists of 4MB of memory but is expandable to 68MB. Paper handling with this cheap printer is basic with 150 sheet input tray and support for 100 sheet of output.
Lexmark E320 also supports a variety of environments, including Windows 95, 98, Me, NT 4.0 (Server), and 2000; Mac OS 8.6 or later via USB, standard Ethernet connection, or MarkNet Print Server; and Red Hat Linux 6.1, 6.2, and 7.0. In addition to USB, the printer also sports a parallel port (cables not included) and offers an optional external serial adapter ($103) and Ethernet and Token Ring ports (ranging from $255 to $530, depending on the number of ports).
The performance of Lexmark E320 is head and shoulder above that of other printer in this price range. This printer prints an impressive 12.1 pages per minute as compared to 11.4 pages per minute for LaserJet 1200 and the Brother HL-1440. The E320′s text was sharp and legible, but at smaller point sizes, the letters appeared light and lost some detail, especially italicized and serif text. The graphics documents of this printer also looked good. The standard toner cartridge with the E320 yields 3,000 sheets at 5 percent coverage and runs $109, putting your estimated cost per page at just less than 4 cents.
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Active energy ray curable aqueous ink composition, and inkjet recording method, ink cartridge, recording unit, and inkjet recording apparatus using the same Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a novel active energy ray curable aqueous ink composition exhibiting excellent curing performance by including a water-soluble polymerizable substance having high reactivity which undergoes radical polymerization by active energy rays and a water-soluble polymerization initiator having high initiation efficiency which generates radicals by active energy rays, and to an inkjet recording method, ink cartridge, recording unit, and inkjet recording apparatus using the active energy ray curable aqueous ink composition.
2. Related Background Art
Active energy ray curable aqueous ink can be preferably used for image printing, pretreatment for providing printability to a recording medium, aftertreatment for protection or decoration of the printed image, and the like. Further, the active energy ray curable aqueous ink technology has numerous excellent features and possibilities in that the ink can keep up with tightening of regulations on. VOC, can be applied to a high density inkjet recording head through reduction of ink viscosity, etc.
A polymerizable substance which undergoes radical polymerization by active energy rays (hereinafter, referred to as polymerizable substance) and a polymerization initiator which generates radicals by active energy rays (hereinafter, referred to as polymerization initiator), which are basic components of the active energy ray curable aqueous ink, each had been generally prepared in a form of emulsion in a water-based solvent initially. However, the polymerizable substance and the polymerization initiator themselves must be water-soluble or hydrophilic to prepare homogenous ink from the viewpoints of film formation properties of the ink during polymerization, discharge stability thereof applied to an inkjet system, and the like.
A first example of a water-soluble or hydrophilic polymerizable substance in practical use is a compound having an acidic group, and a (meth)acryloyl group or vinyl group in a molecule such as an ester of succinic anhydride and 2-hydroxyethyl(meth)acrylate, an ester of phthalic anhydride and 2-hydroxyethyl(meth)acrylate, or vinylnaphthalene sulfonic acid.