Dot-matrix printer with font cartridge unit
CA 1236587 A · Owner: Kabushiki Kaisha Toshiba · Inventors: Tsuneki, Yukio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A dot-matrix printer of the invention uses a font cartridge unit storing in advance character pattern data corresponding to characters other than standard characters. The font cartridge unit has a memory area divided into a plurality of page areas and comprises, memory groups consisting of ROMs and RAMS storing character pattern data in units of page areas. A CPU sets a predetermined page address in a page address register in the font cartridge unit when dot printing of characters other than standard characters is performed. The CPU reads out desired character pattern data from the page area of the memory group corresponding to the preset page address. The CPU …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted May 10, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 10, 2005.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.