Printer control system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 24, 1991
Grant Date -
N/A
app pub date -
Apr 20, 1990
filing date -
Apr 20, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A control system coupled with a laser printer to enhance and expand the capabilities of the printer. A microprocessor with memory components having different functions is coupled between a host computer and the raster image processor of the printer through appropriate interfaces. Bidirectional communication is afforded between the hose and the microprocessor, as well as between the printer and the microprocessor. The system has an audit trail feature which enables the printer to provide security when generating financial forms and negotiable instruments such as checks. The system also has means to facilitate external updating of its control code without changing any hardware on the board.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully