Irving B Erlichman

US Patent:

46300694, Dec 16, 1986

Filed:

May 24, 1985

Appl. No.:

6/737507

Inventors:

Irving Erlichman - Wayland MA

Assignee:

Polaroid Corporation - Cambridge MA

International Classification:

G01D 1510

US Classification:

346 76PH

Abstract:

A closed loop thermal transfer recording system and color transfer ribbon having a plurality of different color ink stripes thereon are provided for recording a color tonal image on a recording sheet. Precise control over the size of dots formed by ink transfer is achieved by monitoring the density of a thermally sensitive indicator layer on the back side of the ribbon which provides, for each different ink color, indicator marks that are proportional to recorded pixel density, and feeding this information back to a control system which compares monitored density with desired density and regulates heat input to the ribbon accordingly.

US Patent:

41881052, Feb 12, 1980

Filed:

Nov 6, 1978

Appl. No.:

5/957978

Inventors:

Irving Erlichman - Wayland MA

Assignee:

Polaroid Corporation - Cambridge MA

International Classification:

G03B 1726
G03B 1910

US Classification:

354202

Abstract:

A photographic film assemblage including a film cassette for housing a battery and a plurality of sheet-like members including several film units. A wall of the cassette is provided with a pair of apertures to enable a pair of contacts in a camera to electrically engage the terminals of the battery. An elongate strip of dielectrical material having a pair of openings therein has one of its ends attached to the last of the sheet-like members to be removed from the film cassette and the pair of holes located between and in alignment with the battery terminals and the pair of apertures. The elongate strip follows the last sheet-like member as it is removed from the film cassette during an exposure cycle thereby moving the pair of openings out of alignment with the battery terminals and the apertures while simultaneously moving a portion of the dielectric material between the battery terminals and the pair of apertures to electrically insulate the battery from the contacts. Alternative embodiments of the invention are also disclosed.

US Patent:

39507661, Apr 13, 1976

Filed:

Nov 22, 1974

Appl. No.:

5/526390

Inventors:

Irving Erlichman - Wayland MA
Christopher R. Rice - Wakefield MA

Assignee:

Polaroid Corporation - Cambridge MA

International Classification:

G03B 714

US Classification:

354 29

Abstract:

An exposure control system for photographic apparatus utilizing pulse driven shutter-diaphragm light regulating elements in conjunction with a follow focus mechanism which in response to the location of the light regulating elements terminates the driving operation thereby automatically selecting an aperture value for flash operation. The follow focus mechanism locates a sensor switch in the path of travel of a pair of aperture defining blades as a function of scene ranging such that the sensor switch is actuated by the blades as the latter are displaced to the selected switch location and, in turn, terminates further pulses to the stepper motor thereby stopping the blades at a predetermined location defining a selected aperture value.

US Patent:

39770125, Aug 24, 1976

Filed:

Nov 22, 1974

Appl. No.:

5/526391

Inventors:

Irving Erlichman - Wayland MA

Assignee:

Polaroid Corporation - Cambridge MA

International Classification:

G03B 714

US Classification:

354 29

Abstract:

An exposure control system for photographic apparatus utilizing motor driven shutter-diaphragm blades in conjunction with a blade sensor which is selectively positioned along the path of blade travel in accordance with an exposure value and which provides a control signal for reversing the blade drive to terminate the exposure interval. In the illustrated embodiment, the sensor is coupled to a comparison photometer and moved along the path of travel of the blades in accordance with photometer setting. Upon initiation of an exposure cycle, the blades are driven from a blocking position through progressively enlarging aperture values until the sensor is actuated by the blades. At this time the control circuitry is triggered to reverse the motor operation thereby returning the blades to a light blocking condition which terminates the exposure interval.

US Patent:

45477841, Oct 15, 1985

Filed:

Dec 24, 1984

Appl. No.:

6/685715

Inventors:

Irving Erlichman - Wayland MA
Robert W. Hausslein - Lexington MA

Assignee:

Polaroid Corporation - Cambridge MA

International Classification:

B41J 320
B41M 518

US Classification:

346 76PH

Abstract:

A closed loop thermal recording system and method are provided for recording a grey scale image on a transparency type of thermally sensitive recording medium in accordance with electronic image signals. The application of thermal energy to the medium is controlled, in part, by a feedback subsystem that optically monitors pixel area density while recording is in progress. The recording system includes a light reflective background member, located between a transparent recording layer of the medium and a thermal print head, for improving the accuracy and reliability of the optical monitoring process.

US Patent:

43710751, Feb 1, 1983

Filed:

Aug 4, 1980

Appl. No.:

6/175249

Inventors:

Irving Erlichman - Wayland MA

Assignee:

Polaroid Corporation - Cambridge MA

International Classification:

B65G 2120

US Classification:

198345

Abstract:

A reusable universal modular unit, which may be used alone or in combination with one or more similar units to form a production line, is provided for facilitating manual and/or mechanized work or assembly operations on a product supported on a carrier having a reusable standardized base section and an expendable component supporting nest section. Each modular unit includes a work table having at least one work station thereon, a self-contained conveyor for transporting carriers to and away from the work station and a carrier handling system at each work station for disengaging a carrier from the conveyor, locating and locking it at a fixed work position to facilitate assembly operations and for thereafter reengaging the carrier with the conveyor for transport away from the work station. A production line of any suitable length is formed by arranging the units serially in end-to-end relation. Provisions are made for easily adding accumulator units at selected locations along the line.

US Patent:

41785983, Dec 11, 1979

Filed:

Jun 1, 1978

Appl. No.:

5/911346

Inventors:

Irving Erlichman - Wayland MA

Assignee:

Polaroid Corporation - Cambridge MA

International Classification:

G01D 1520

US Classification:

346105

Abstract:

In a printing system wherein a ball stylus of a given diameter is brought into repeated engagement with the back side of a transfer sheet to selectively transfer a printing medium on the front side of the transfer sheet to a facing printing medium receiving surface of a recording sheet to printout image defining marks thereon, the improvement wherein one of the transfer and image recording sheets includes a surface provided by an orderly spaced array of raised mesas and recessed areas therebetween to selectively limit the size or area of the marks printed out in this manner.

US Patent:

45969914, Jun 24, 1986

Filed:

Dec 24, 1984

Appl. No.:

6/685714

Inventors:

Algis E. Adomkaitis - Milton MA
Irving Erlichman - Wayland MA
Richard L. Smith - Concord MA

Assignee:

Polaroid Corporation - Cambridge MA

International Classification:

B41J 320

US Classification:

346 76PH

Abstract:

A thermally sensitive image recording medium of the transparency type includes transparent support and recording layers and a strippably adhered light reflective background layer which provides a contrasting background against which recorded image components may be monitored by reflected light while image recording is in progress. Thereafter, the background layer is removed so that the image may be projected or otherwise viewed by transmitted light.