Head biasing mechanism in a thermal printer
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 4, 1989
Grant Date -
N/A
app pub date -
Aug 29, 1986
filing date -
Aug 29, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A thermal printer for printing on a printing sheet. A print head with print elements opposes a platen and the printing sheet is located between the print head and platen. A head up-down mechanism for moving the print head toward and away from the platen has a biasing mechanism, a head release mechanism, and a change mechanism. The biasing mechanism includes an elastic member for urging the print head against the platen at least two levels of biasing force in the head down position. The head release mechanism selectively relieves the biasing force on the print head. The change mechanism effects selection between at least two levels of the biasing force produced from the force generated by the elastic member. The biasing force is related to the head movement speed or sheet movement speed. The energy applied to the print elements is based on the biasing force. A detection of the smoothness of the paper results in a variation in the biasing force on the print head.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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