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
Backup and recovery of distributed storage areas
Integrated analyses of breast and colorectal cancers
Solid-state imaging device, method for manufacturing solid-state imaging device, and electronic apparatus
Container
Method and system for efficient DRX operation during handover in LTE
Milk frother
Substituted thiophene pentamers
  Randomly Featured Patents
Shield for a hummingbird feeder
Pin feed mechanism for transporting continuous stationery
Quantity of antennas designating a time-frequency resource block
Denoising acoustic signals using constrained non-negative matrix factorization
Snack food container
Nasal strip with variable spring rate
Apparatus and method for supporting cupboards and the like
Toy pendant
Article storage device
Interlayer connection structure of multilayer wiring board, method of manufacturing method of forming land thereof