Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Low-viscosity aqueous ink for a ball-point pen and a ball-point pen










Image Number 4 for United States Patent #5929135.

This invention provides a ball-point pen suited to low-viscosity aqueous ink. This ball-point pen includes a ball-point pen refill in which an ink reservoir communicates with a tip for holding a tip ball via a joint, wherein the ink reservoir is filled with water type ball-point pen ink containing at least one type of a solvent selected from the group consisting of ethyleneglycol, diethyleneglycol, propyleneglycol, and glycerin in an amount of 5 to 40 wt % of the total ink amount, a crosslinking acrylic acid polymer in an amount of 0.1 to 1.0 wt % of the total ink amount, a pigment in an amount of 5 to 10 wt % of the total ink amount, and the balance primarily consisting of water, and the tip has a spring which in a normal state urges and brings the tip ball into intimate contact with the inner edge of a ball holding portion at the front end of the tip and releases the intimate contact when writing is performed.








 
 
  Recently Added Patents
Display apparatus
Erasing a non-volatile memory (NVM) system having error correction code (ECC)
Downhole telemetry system
Remotely provisioned wireless proxy
Wireless communication system, wireless communication device, wireless communication method, and program
Deflection device for a scanner with Lissajous scanning
Nonvolatile semiconductor storage device having conductive and insulative charge storage films
  Randomly Featured Patents
Write-assisted SRAM bit cell
Magnetic drive device
Mixed technology integrated device comprising complementary LDMOS power transistors, CMOS and vertical PNP integrated structures having an enhanced ability to withstand a relatively high suppl
Dual band single feed dipole antenna and method of making the same
Gel compositions prepared from crosslinkable polysaccharides, polycations and/or lipids and uses therefor
Tee-nut holder strip
Adjustable display board system
X-ray film processor
Photoprotective lipophilic antioxidant compounds and their use to prevent UVA-mediated lipid peroxidation
Crossing gate