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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Deetz; David R.
Address:
Dallas, TX
No. of patents:
6
Patents:












Patent Number Title Of Patent Date Issued
4102265 Hammer driver controller for impact printers July 25, 1978
To obtain a substantially uniform print density while printing at high speed with a hammer-type impact printer, the hammer is electromagnetically driven in response to an energizing current which decays with a predetermined time constant from a high initial level toward a set point l
4084680 Enhanced underscoring methods and means for automatic typewriter and the like employing hammer-t April 18, 1978
To enable an automatic typewriter or the like equipped with a hammer-type impact printer to print substantially straight and uniformly dense underscoring lines, provision is made for automatically forming multiple character underscores from a series of overlapping underscore characters.
4062285 Hammer driver controller for impact printers December 13, 1977
To obtain a substantially uniform print density while printing at high speed with a hammer-type impact printer, the hammer is electromagnetically driven in response to an energizing current which decays with a predetermined time constant from a high initial level toward a set point l
4053043 Means and method for enhancing ribbon lift October 11, 1977
To enable an impact printer, employing a daisy wheel print element and a ribbon which is raised to an up or print position from a down or character viewing position, to print without loss of portions of the characters because of incomplete ribbon lift caused by contact between the ribbon
4035072 Programmable controller for controlling reproduction machines July 12, 1977
A programmable controller is used to control the operation of a xerographic reproducing machine adapted to run in a simplex or duplex mode whereby copies are made on either or both sides of web material fed in a single pass and then cut into individual copy sheets.A control program, comp
3944360 Programmable controller for controlling reproduction machines March 16, 1976
A programmable controller is used to control the operation of a xerographic reproducing machine adapted to run in a simplex or duplex mode whereby copies are made on either or both sides of web material fed in a single pass and then cut into individual copy sheets. A control program,










 
 
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