A multiple mode image processing apparatus and method. The apparatus, in a copy mode, processes copies xerographically. In a write mode, images derived from image signals are written on the apparatus photoreceptor by a raster scanner, and in a read mode, the raster scanner scans images developed on the photoreceptor to produce image signals representative thereof. A multiple speed drive is provided for the photoreceptor to move the photoreceptor at a high speed when processing copies xerographically and at a lower speed compatible with the data transmission rate for image signals when writing or reading images.
Peter A. Crean - Penfield NY Pierre A. Lavallee - Penfield NY
Assignee:
Xerox Corporation - Stamford CT
International Classification:
G06K 710
US Classification:
250566
Abstract:
A line scanning apparatus employing a multiplicity of linear arrays, the linear extent of which is less than the length of the scan line. To permit an entire line to be covered, the arrays are offset from one another in the direction of scan with adjoining array ends overlapped. To correct for the misalignment and redundancy introduced, the image data from the arrays is buffered until a line is completed when readout, is initiated. During readout, cross over from one array to the next is effected within the overlapped areas and the redundant data discarded.
Peter A. Crean - Penfield NY Pierre A. Lavallee - Penfield NY Martin A. Agulnek - Sharon MA
Assignee:
Xerox Corporation - Stamford CT
International Classification:
G06K 710
US Classification:
250566
Abstract:
A line scanning apparatus employing a multiplicity of linear arrays, the linear extent of which is less than the length of the scan line. To permit an entire line to be covered, the arrays are offset from one another in the direction of scan with adjoining array ends overlapped. To correct for the misalignment and redundancy introduced, the image data from the arrays is buffered until a line is completed when readout, is initiated. During readout, cross over from one array to the next is effected within the overlapped areas and the redundant data discarded.
Pierre A. Lavallee - Penfield NY Sidney W. Marshall - Webster NY Ronald L. Antos - Webster NY
Assignee:
Xerox Corporation - Stamford CT
International Classification:
G02B 2717
US Classification:
350 68
Abstract:
A raster scanner with laser for generating a scanning beam and compact, folded optical system for transmitting the beam to the object to be scanned. The optical system includes a first mirror for guiding the laser beam forward along a downwardly inclined slope to the modulator, a second mirror below the modulator for intercepting the beam from the modulator and folding the intercepted beam to guide the beam backwards along a horizontal plane to a third mirror which folds the beam and guides the beam forward along an upwardly inclined slope against the mirrored facets of a rotating polygon, the polygon scanning the beam through a preset scan arc and returning the beam via a focusing lens to the third mirror, the third mirror folding the scan beam and guiding the scan beam forward, and a fourth mirror for intercepting the scan beam and guiding the beam to the object to be scanned.
Multiple Array Full Width Electro Mechanical Modulator
Martin E. Banton - Fairport NY Pierre A. Lavallee - Penfield NY Mehdi N. Araghi - West Webster NY Joseph J. Daniele - Pittsford NY Kwok L. Yip - Webster NY
Assignee:
Xerox Corporation - Stamford CT
International Classification:
G02F 129
US Classification:
350360
Abstract:
A full width opto-mechanical modulator comprised of a silicon chip have dual rows or arrays of flexible finger-like reflectors disposed thereon in staggered facing relationship to one another. The reflectors, the surface of which is highly reflective, bend in response to the application of a predetermined potential. The modulator is placed in the path of a beam of high intensity light, and potentials applied to selected reflectors in accordance with an image signal input cause the modulator to reflect light striking the individual reflectors in either an exposure path or against a beam stop.
Peter A. Crean - Penfield NY Pierre A. Lavallee - Penfield NY
Assignee:
Xerox Corporation - Stamford CT
International Classification:
G06K 714 G06K 910
US Classification:
235454
Abstract:
A line scanning apparatus employing a multiplicity of linear arrays, the linear extent of which is less than the length of the scan line. To permit an entire line to be covered, the arrays are offset from one another in the direction of scan with adjoining array ends overlapped. To correct for the misalignment and redundancy introduced, the image data from the arrays is buffered until a line is completed when readout, is initiated. During readout, cross over from one array to the next is effected within the overlapped areas and the redundant data discarded.
Jagdish C. Tandon - Fairport NY Pierre A. Lavallee - Penfield NY
Assignee:
Xerox Corporation - Stamford CT
International Classification:
H04N 314
US Classification:
35821331
Abstract:
A linear image sensor array with a row of photodiodes and a transfer circuit for each photodiode, the circuit having a pair of transistors for two stage transfer of the image signal charge from the photodiode to the gate of one transistor of a two transistor source follower, a transistor for applying a bias charge to the photodiode, a multiplexing transistor for connecting the source follower output to an output line, a reset transistor for resetting the source follower, and clock signals for operating the transfer circuits in succession to serially output image signals to the output line.
Peter A. Crean - Penfield NY Pierre A. Lavallee - Penfield NY Martin A. Agulnek - Brighton NY
Assignee:
Xerox Corporation - Stamford CT
International Classification:
G06K 710
US Classification:
250566
Abstract:
A line scanning apparatus employing a multiplicity of linear arrays, the linear extent of which is less than the length of the scan line. To permit an entire line to be covered, the arrays are offset from one another in the direction of scan with adjoining array ends overlapped. To correct for the misalignment and redundancy introduced, the image data from the arrays is buffered until a line is completed when readout, is initiated. During readout, cross over from one array to the next is effected within the overlapped areas and the redundant data discarded.
