1
Gerald L Pressman, John V Casanova: Electrostatic line printer. Electroprint, Townsend and Townsend, September 5, 1972: US3689935 (142 worldwide citation)

An electrostatic line printer incorporating a multilayered particle modulator comprising a layer of insulating material, a continuous layer of conducting material on one side of the insulating layer and a segmented layer of conducting material on the other side of the insulating layer. At least one ...


2
Gerald L Pressman, Louis Wilk: Concealed pattern detection game. August 1, 1978: US04103895 (46 worldwide citation)

A game or test of skill which is comprised of three principal components: a playing surface that either conceals or suggests a secret pattern of paths, a probe for selecting points on the playing surface, and an indicator that reveals whether a selected point belongs on the pattern of paths. In a pr ...


3
Gerald L Pressman, David E Blake, Hugh F Frohbach: Electrostatic printing system and method using ions and liquid aerosol toners. ElectroPrint, Townsend & Townsend, August 31, 1976: US03977323 (27 worldwide citation)

A system for electrostatic printing including a corona source and electrode for coulombs/m.sup.a substantially uniform stream of ions in the direction of a print receiving medium and a multilayer apertured modulator interposed in the ion stream for modulating the cross-sectional flow density of ions ...


4
Gerald L Pressman: Color electrophotography using encoded multicolor information. Electroprint, Townsend and Townsend, August 3, 1976: US03972716 (15 worldwide citation)

A system for electrostatic photography using a camera having an aperture formed in one side for imaging light onto a photoconductive insulating layer positioned and supported in the camera housing to permit formation of an electrostatic latent image on dielectric film. A contact charging plate inclu ...


5
Gerald L Pressman, John V Casanova: Electrostatic line printer. Electroprint, Townsend and Townsend, April 12, 1977: US04016813 (12 worldwide citation)

An electrostatic line printing process employing multilayered particle modulator comprising a layer of insulating material on one side of the insulating layer and a segmented layer of conducting material on the other side of the insulating layer. At least one row of apertures is formed through the m ...


6
Gerald L Pressman, Kenneth W Gardiner: Electrostatic color printing systems using modulated ion streams. Electroprint, Townsend and Townsend, February 8, 1977: US04006983 (11 worldwide citation)

The invention basically comprises systems and methods relating to the field of electrostatics and is concerned with multicolor electrostatic reproduction, printing or constituting on coated and uncoated print receiving media with multilayer apertured elements or screens carrying charge distributions ...


7
Gerald L Pressman, Robert A Moore, Jeffrey B Brooks, Robert W Sengstaken Jr: Electrostatic print head. Markem Corporation, July 6, 1982: US04338614 (9 worldwide citation)

An improved electrostatic print head is disclosed comprising a corona source, an aperture mask, a slotted focus plane, and a back plane electrode for supporting a moving dielectric print medium. The aperture mask includes two rows of staggered circular apertures which are surrounded by individual ap ...


8
Ray Y Yokoyama, Gerald L Pressman: Loop-back circuit for testing a magnetic recording system with simultaneous read and write functions. Trace Mountain Products, Albert C Smith, December 26, 1995: US05479098 (9 worldwide citation)

In a magnetic recording system, a loop-back test circuit provides a technique to test a magnetic recording head, a read circuit, and a write circuit to a read-write head, is sensed through the voltage generated at the head by the test current, such that a small voltage portion of the test signal is ...


9
Russell Vogel, William D Van Alstyne, Gerald L Pressman, Charles A Linquist, James L Michelotti, Paul A Lind: Method and apparatus for adjusting asymmetric recording signals. Trace Mountain Products, Edward B Weller, January 16, 1996: US05485320 (6 worldwide citation)

In a magnetic recording system, an asymmetry detector reverses the phase of a read, single-frequency test signal to indicate to a micro-controller whether recording signal asymmetry is present. Upon detecting such asymmetry, the micro-controller causes a current source coupled to the recording head ...


10
Gerald L Pressman, Kenneth W Gardiner: Electrostatic color printing systems and methods using modulated ion streams. Electroprint, Townsend and Townsend, January 1, 1980: US04181423 (6 worldwide citation)

The invention basically comprises systems and methods relating to the field of electrostatics and is concerned with multicolor electrostatic reproduction, printing or constituting on coated and uncoated print receiving media with multilayer apertured elements or screens carrying charge distributions ...