Patents by Inventor James T. Samuels

James T. Samuels has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6082909
    Abstract: Black-and-white elements, such as radiographic films, can be processed in roomlight because they include certain light absorbing dyes and desensitizers. Processing of such elements can be achieved using a processing kit and a two-stage process carried out in the same light- and fluid-tight processing apparatus. In the first stage, development is initiated with a developing composition having a pH of from about 10 to about 12.5, and comprising an appropriate black-and-white developing agent and a sulfite. After an appropriate time, a non-sulfite fixing agent is introduced into the processing apparatus or container to provide a combined developing/fixing composition, and development and fixing are carried out simultaneously. The processing method is carried out quickly, usually within about 90 seconds. The presence of sulfite and high pH in both stages decolorizes or deactivates the particulate dyes.
    Type: Grant
    Filed: June 5, 1998
    Date of Patent: July 4, 2000
    Assignee: Eastman Kodak Company
    Inventors: Alan S. Fitterman, Robert E. Dickerson, Peter J. Kelch, Ronald J. Perry, David G. Sherburne, James T. Samuels
  • Patent number: 5262816
    Abstract: A temperature control system (10) of an automatic film processor (12) includes developer and fixer recirculation paths (30, 40) having thermowell heaters (34, 44) and thermistors (35, 45), and a cooling heat exchanger (37) in the developer path (30) which passes in heat exchange relationship with water in a wash tank (23). The system (10) also has a blower (48), heater (49) and thermistor (52) in an air path of a dryer (24). Heater (34, 44, 49) and cooling heat exchanger (37) operation is normally controlled on a closed loop, feedback mode basis by comparing measured current temperatures in real time with preestablished setpoint temperatures. When system errors cause an absence of current valid measured temperature data, shutdown or lockout can be overridden, and temperature control continued on an open loop basis using stored historical measurement data and on-off duty cycle profiles.
    Type: Grant
    Filed: September 13, 1991
    Date of Patent: November 16, 1993
    Assignee: Eastman Kodak Company
    Inventors: James T. Samuels, Michael Newman
  • Patent number: 5245377
    Abstract: A temperature control system (10) of an automatic film processor (12) includes developer and fixer recirculation paths (30, 40) having thermowell heaters (34, 44) and thermistors (35, 45), and a cooling loop (37) in the developer path (30) which passes in heat exchange relationship with water in a wash tank (23). The system (10) also has a blower (48), heater (49) and thermistor (52) in an air path of a dryer (24). Actual heating and cooling rates of heating and cooling cycles are determined based on temperature measurements by the thermistors (35, 45, 52). Heater (34, 44, 49) and cooling loop (37) operation is controlled by comparing measured temperatures with preestablished setpoint temperatures. Malfunctions of system (10) are identified by comparing actual rates with rates characteristic of normal operations.
    Type: Grant
    Filed: September 13, 1991
    Date of Patent: September 14, 1993
    Assignee: Eastman Kodak Company
    Inventors: James T. Samuels, Michael Newman
  • Patent number: 5235371
    Abstract: A temperature control system (10) of an automatic film processor (12) includes developer and fixer recirculation paths (30, 40) having thermowell heaters (34, 44) and thermistors (35, 45). The heating rate of a heating cycle is determined based on temperature measurements by the thermistor (35). The duty cycle of heater (34) is controlled in proportion to the difference between measured actual temperature and a preestablished setpoint temperature. When replenishment occurs, until the cooler slug of replenishment becomes mixed, heater duty cycle is chosen based on prereplenishment temperature as well as measured temperature. In a modified embodiment, until the slug is mixed, a single predefined heater duty cycle is set.
    Type: Grant
    Filed: September 13, 1991
    Date of Patent: August 10, 1993
    Assignee: Eastman Kodak Company
    Inventors: James T. Samuels, Michael Newman
  • Patent number: 5235370
    Abstract: A temperature control system (10) of an automatic film processor (12) includes developer and fixer recirculation paths (30, 40) having thermowell heaters (34, 44) and thermistors (35, 45), and a cooling loop (37) in the developer path (30) which passes in heat exchange relationship with water in a wash tank (23). The system (10) also has a blower (48), heater (49) and thermistor (52) in an air path of a dryer (24). Actual heating and cooling rates of heating and cooling cycles are determined based on temperature measurements by the thermistors (35, 45, 52). Heater (34, 44, 49) and cooling loop (37) malfunctions are identified by comparing actual rates with rates characteristic of normal operations. Periodic readings of a precision resistor (89) are made to check for failures in analog-to-digital (87), multiplexing (86) and thermistor (35, 45, 52) circuits. An error-responsive fresh film inhibit feature, with user selectable override, is provided.
    Type: Grant
    Filed: July 31, 1991
    Date of Patent: August 10, 1993
    Assignee: Eastman Kodak Company
    Inventors: James T. Samuels, Michael Newman
  • Patent number: 5132716
    Abstract: An automatic film processor having control circuitry including a microprocessor and a plurality of electrically alterable programmable read-only memory (EAPROM) elements for respectively storing main operating program and language codes for control of the processor, has a non-volatile read-only memory (ROM) element containing a bootstrap program including instructions for reprogramming the main program and language ROMs, using addresses and code downloaded from a laptop computer using an RS232 interface. Initialization or reprogramming occurs without the necessity for physically removing or replacing the ROMs, and in response to flags set by software.
    Type: Grant
    Filed: November 21, 1990
    Date of Patent: July 21, 1992
    Assignee: Eastman Kodak Company
    Inventors: James T. Samuels, Roger D. Ellsworth
  • Patent number: 5065173
    Abstract: An automatic film processor sets new reference developer chemical temperatures and film transport speeds in accordance with user input at a keypad and establishes a new delay time to provide constant fixed spacing along the transport path between trailing edge of one film sheet and leadfing edge of a next film sheet regardless of transport speed. "Wait" and "ready" lights are controlled to signal when a next sheet is to be fed. A microcomputer calculates the delay time and loads a counter. A buzzer signals countdown to zero.
    Type: Grant
    Filed: March 19, 1990
    Date of Patent: November 12, 1991
    Assignee: Eastman Kodak Company
    Inventors: James T. Samuels, Roger D. Ellsworth
  • Patent number: 5053797
    Abstract: An automatic film processor having control circuitry including a microprocessor and an electrically alterable programmable read-only memory (EAPROM) with a stored main program for control of the processor, has an auxiliary read-only memory (ROM) containing a bootstrap program including instructions for reprogramming the EAPROM using addresses and data from a disk drive or RS232 port. Reprogramming occurs in response to manual or automatic setting of a switch, without physically removing or replacing the EAPROM.
    Type: Grant
    Filed: April 4, 1990
    Date of Patent: October 1, 1991
    Assignee: Eastman Kodak Company
    Inventors: James T. Samuels, Roger D. Ellsworth
  • Patent number: 5027145
    Abstract: There is described a film processor wherein an improved heat exchanger is provided for the liquid chemicals of two of its baths. The method of heat exchanging is also described. Specifically, the heat exchanger is a thermoelectric Peltier device that cools the developer at its heat sink and heats the wash water at its heat-emitting source.
    Type: Grant
    Filed: August 29, 1990
    Date of Patent: June 25, 1991
    Assignee: Eastman Kodak Company
    Inventor: James T. Samuels
  • Patent number: 4994837
    Abstract: An automatic film processor sets new reference developer chemical temperatures and film transport speeds in accordance with user input at a keypad and disengages the film transport motor under microcomputer control to prevent further introduction of film until sensed actual developer temperature is within an acceptable tolerance of the new set temperature. A "wait" light is modulated to flash with increasing frequency as the gap between actual and set reference temperature is narrowed. Manual override is provided to re-engage the film motor even though the new set temperature has not been reached. A buzzer signals a feed in the override mode.
    Type: Grant
    Filed: March 16, 1990
    Date of Patent: February 19, 1991
    Assignee: Eastman Kodak Company
    Inventors: James T. Samuels, Roger D. Ellsworth
  • Patent number: 4978858
    Abstract: In order to detect the presence and make measurements of the dimensions of web which travels along a path, for example film, such as X-ray film and equipment which develops such film, a linear array of light emitting devices (e.g. LEDs) is disposed opposite to an array of corresponding photodetectors to define a gap through which the web travels. The web is scanned by sequentially applying pulses of electrical power to the emitting devices. Output signals are provided from each photodetector representing the presence of the web. In order that the brightness is sufficient to detect the presence of low density (semi-opaque) webs and to maintain uniformity of brightness of illumination from emitter to emitter, the current to the emitters is computer controlled by means of a control system which responds to the signals from the photodetectors and increments or decrements the current from an initially preset level during selected scans, for example on scans which occur every 15 seconds.
    Type: Grant
    Filed: June 9, 1989
    Date of Patent: December 18, 1990
    Assignee: Eastman Kodak Company
    Inventors: Roger D. Ellsworth, William A. Richards, James T. Samuels, James K. Bober