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
Flashlight
Pattern data conversion for lithography system
Solid-state image capture device and image capture apparatus
Statistical information collection from one or more device(s) in storage communication with a computing platform
Methods and systems for adapting a user environment
Method and system for automatically hiding irrelevant parts of hierarchical structures in computer user interfaces
Method and system for filtering noises in an image scanned by charged particles
  Randomly Featured Patents
Apparatus for producing a series of documents from reformatted input data and for checking the order of production
GPON management system
Laminating ink composition containing polyamide resins
Voltage tolerance measuring apparatus for motherboard
Ceramic composition for thermistor and thermistor element
Clutch disc with actuation of the idle springs by means of a control plate
Information display stand
Metal cabinet
Image stabilizer for viewing devices
Personal computer