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
Noise spectrum tracking in noisy acoustical signals
Portable computer
Electrical terminal
Photon density wave based determination of physiological blood parameters
Rate controlled first in first out (FIFO) queues for clock domain crossing
Ion generation using wetted porous material
Dental plier
  Randomly Featured Patents
Fiber optic connector with unlatching and partial disassembly
Documents coded by means of machine-readable optical markings
Attribute dictionary in a business logic services environment
Method of forming a thin film transistor
Telephone
Substituted 2,3-dihydro-1,2,4-triazolo [4,3-b][1,2]benzisothiazol-3-amine, 5,5, dioxides
Color toner, and full-color image forming method
Vehicle center console
Optical and mechanical interface between opto-electronic devices and fibers
Enhancing color stability to sterilizing radiation of polymer compositions