Resources Contact Us Home
Convertible platen for graphics plotter

Image Number 5 for United States Patent #4512505.

A convertible platen for use in a graphics plotter to allow its selective use as either a cut paper plotter or a roll paper plotter. The platen is formed from a specially designed aluminum extrusion and a pair is mounted with one on either side of the drum of a drum plotter between the drum and the supply/takeup rollers. The platens can be raised and held adjacent the drum and spanning the vacuum columns in the plotter to create a table having curved outer edges to support cut paper. They can be released and dropped into the vacuum columns whereby they lie against the outer surfaces and form the upper inner wall with curved upper edges over which paper smoothly is guided between the vacuum columns and the supply/takeup rollers.

  Recently Added Patents
Display for displaying three-dimensional images and method for displaying three-dimensional images
Method for measuring and improving organization effectiveness
Plasma doping method and plasma doping apparatus
Modular system having expandable form factor
Method for assisting in the checking of transaction records, transaction device, server, mobile terminal, and corresponding computer programs
Management of computer-file sharing between at least two devices
Selective facsimile denial
  Randomly Featured Patents
Methods and apparatus for providing dynamic data flow queues
Bandgap reference circuit with reduced output error
Isolated stealth viruses and related vaccines
Farnesyl pyrophosphate synthase proteins, nucleic acids and promoter regions therefor
Secure social web orchestration via a security model
Process for preparing finely divided hydrophobic oxide particles
Preparation of chloroformates having terminal acrylic or methacrylic groups
Flexible, corrosion resistant, thermosetting metal coating compositions
Methods and compositions for treating anxiety
Surface quality analyzer apparatus and method