Gradation record printer

Details Gradation record printer Gradation record printer

1991-01-28

1993-05-25

Fuller, Benjamin R.

Recorders

Thermal recording

358298, B41J 02325

Patent

active

052144461

ABSTRACT:
A gradation record printer in which an amount of energy applied to a thermal head is controlled in response to a gradation level of an input image signal to print an image on a printing medium with gradations. The printer comprises a gradation density detecting unit for storing data of standard density patterns with respect to address values corresponding to gradation levels and for outputting a coincidence signal when data supplied from an outside of the gradation density detecting unit substantially coincides with the data of standard density patterns. A gradation test print circuit is used to apply data of different amounts of printing energy to the thermal head sequentially to make a gradation test print on the printing medium. A density detecting sensor detects densities of the gradation test print and applies a detection output from the density detecting sensor to the gradation density detecting unit. A memory element stores the data of different amounts of energy with respect to address values corresponding to the gradation levels in response to the coincidence signal from the gradation density detecting unit.

REFERENCES:
patent: 4699531 (1987-10-01), Ulinski, Sr. et al.
patent: 4843409 (1989-06-01), Matsuzaki
patent: 4939581 (1990-07-01), Shalit

Affiliated with

Also associated with

Rating

Gradation record printer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gradation record printer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gradation record printer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-900721