Abstract An electrographic recorder is described which lays down a line of electrostatic charge on a charge retentive surface of a strip of electrographic recording paper. In one embodiment, the transverse position of the line charge image on the recording strip is representative of the amplitude of the signal being recorded. Plural inkers each dispensing a different color of charged pigment are arranged to ink charge images within separate strip-shaped zones of the recording strip. Thus, the inked electrostatic image will have a color dependent upon the amplitude range it happens to correspond to at any position taken longitudinally along the strip. The transverse position of the boundary between different colors is adjustable by sliding or pivoting the inkers, whereby the different colored amplitude ranges are made adjustable. In a second and third embodiment a multichannel recorder or printer is described wherein the signals corresponding to the different channels are each recorded in their own separate strip-shaped zone of the recording paper. Each separate recording zone has its own separate inker with pigment of a different color than that of its neighbors.
Inventors
👤 Renn Zaphiropoulos
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-27 22:09
CPC Classifications
G; G01; G01D; G01D15/00; G01D15/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
123 words
In an electrographic apparatus for providing a multicolored visible image on the charge retentive surface of a recording medium, the combination comprising: electrode means for forming an electric charge image upon the charge retentive surface of the recording medium; means for moving the recording medium relative to the electrode means along a path of travel; developing means including a first applicator portion and a second applicator portion spaced from the electrode means along the path of travel for exposing the charge image to pigment particles of a first and second color respectively to provide a multicolored visible image, each of the applicator portions being pivotally adjustable with respect to the recording medium to define adjustable developing widths for the first and second colors.
Claim 2
Dependent Claim
123 words
In an electrographic apparatus for providing a multicolored visible image on the charge retentive surface of a recording medium, the combination comprising: electrode means for forming an electric charge image upon the charge retentive surface of the recording medium; means for moving the recording medium relative to the electrode means along a path of travel; developing means including a first applicator portion and a second applicator portion spaced from the electrode means along the path of travel for exposing the charge image to pigment particles of a first and second color respectively to provide a multicolored visible image, each of the applicator portions being pivotally adjustable with respect to the recording medium to define adjustable developing widths for the first and second colors.
Claim 3
Dependent Claim
20 words
The apparatus of claim 1, wherein the electrode means is an array of metallic electrodes extending across the recording medium.
Claim 4
Dependent Claim
42 words
The apparatus of Claim 1, wherein the first applicator portion is pivotal about a first axis proximate one edge of the recording medium and the second applicator portion is pivotal about a second axis proximate the other edge of the recording medium.
Claim 5
Dependent Claim
24 words
The apparatus of claim 3, wherein the applicator portions are pivotally secured together at a movable pivot point between the first and second axis.