Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Gradation control circuit of line thermal printer










Image Number 3 for United States Patent #5216440.

A gradation modulating apparatus is provided in a line thermal printer having a plurality of resistive elements arranged linearly widthwise of a medium sheet for printing gradated dots line-sequentially according to gradation image data. A memory is provided for storing individual weight data representative of energy generation rates of respective resistive elements, in corresponding addresses. An address generator is responsive to serial input of the gradation image data for generating an addressing signal effective to read out the stored individual weight data. A modulator is receptive of the inputted gradation data and the read weight data in synchronization with each other for producing modulated gradation image data according to the weight data. A latching circuit is connected for latching the modulated gradation image data line-sequentially. A driver is connected for applying driving signals regulated according to the latched modulated gradation image data to the resistive elements to enable the same to print dots having substantially the same print density for a given gradation level defined by the input gradation data.








 
 
  Recently Added Patents
Systems and methods for controlling phasing of advancing substrates in absorbent article converting lines
Particles with high surface charge for crystalline colloidal arrays
Print control server, print controlling method, and print control program
Rechargeable battery
Parallel active optical cable
Method and system for generating and displaying an interactive dynamic graph view of multiply connected objects
Bessel beam plane illumination microscope
  Randomly Featured Patents
Method and system for providing a persistent HTTP tunnel
Air intake system and forklift equipped with it
Container
High voltage MOS transistors with reduced parasitic current gain
Linear material for blood vessel stent and blood vessel stent utilizing same
Digital multiplexor with multiple switching modes
Circuitry for multiplying a PCM signal by a sinusoid
Waterproof vapor-permeable shoe
Depth detecting assembly
Composition suitable for inhibiting potato sprouting and/or fungoid growth