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
System for managing insulin dosage data
GNSS signal processing methods and apparatus with scaling of quality measure
Creation of vias and trenches with different depths
Portable screen
Multi-dimensional chromatographic methods for separating N-glycans
Decoder architecture systems, apparatus and methods
Method and system for noise reduction for 3D video content
  Randomly Featured Patents
TV receiver for receiving a broadcast signal and station information
Signal processor
Systems and methods for pairwise analysis of event data
Toner evaluation method, toner cartridge, and image forming apparatus
Coffee machine
Enzyme inhibitor acaricides I
Reactor for UV radiation for the treatment of liquids
Process for preparing finely divided metal powders
Roof rack system for a motor vehicle
Navigation of electronic device menu without requiring visual contact