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US3603585A Expired / Lapsed US ⏱️ 0.0 years remaining

Photoelectrostatic printout machine

Assignee: AB Dick Co
•
Filing: 1969-07-24
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Granted: 1971-09-07
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Expires: 1989-07-24
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Abstract

Abstract A photoelectrostatic printout machine for computers or terminals of communication links in which logic circuits coupled to detectors located at stations spaced along the path of movement of the copy sheet detect paper jams and skewed sheets. An abnormality stops sheet feeding and inhibits the transfer of image signals to the machine. The position of the light-sensitive copy sheets is photoelectrically detected using light to which the sheet does not respond.

Inventors

  • 👤 William R Maloney
  • 👤 Arthur L Hallquist

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 08:20
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/70; B; B41; B41J; B41J29/00; B41J29/46; B41J29/48

Claims Analysis

Total Claims: 21
Claim 1
Independent Claim 131 words
In an apparatus in which an article is moved along a path, first, second, and third detecting means spaced along the path and operative to detect the presence of the article at different first, second, and third points, respectively, along the path; a first control circuit coupled to and controlled by the first detecting means for producing an indication that the article has reached the first point; a second control circuit coupled to and controlled by the second detecting means for producing an indication that the article has reached the second point; and circuit means coupling the second detecting means to the first control circuit to inhibit the operation of the fist control circuit and coupling the third detecting means to the second control circuit to inhibit the second control circuit.
Claim 2
Dependent Claim 131 words
In an apparatus in which an article is moved along a path, first, second, and third detecting means spaced along the path and operative to detect the presence of the article at different first, second, and third points, respectively, along the path; a first control circuit coupled to and controlled by the first detecting means for producing an indication that the article has reached the first point; a second control circuit coupled to and controlled by the second detecting means for producing an indication that the article has reached the second point; and circuit means coupling the second detecting means to the first control circuit to inhibit the operation of the fist control circuit and coupling the third detecting means to the second control circuit to inhibit the second control circuit.
Claim 3
Dependent Claim 50 words
The apparatus set forth in claim 1 in which the first control circuit includes a counter operated to successive settings in response to received signals, and a signal source coupled to the counter and operative to supply a series of signals to the counter synchronized with movement of the article.
Claim 4
Dependent Claim 61 words
The apparatus set forth in claim 1 in which the first control circuit includes a timing circuit started by the first detecting means, and an indicating means coupled to the timing circuit to be operated at the end of a predetermined time interval, the second detecting means being coupled to the indicating means to inhibit operation thereof by the timing circuit.
Claim 5
Dependent Claim 136 words
In an apparatus for feeding an article along a path, first feeding means for imparting continuous movement to the article along a first portion of the path, second feeding means for imparting intermittent movement to the article along a second portion of the path, detecting means disposed along the path for detecting the presence of the article in the first and second portions of the path, and a control circuit coupled to the detecting means for indicating an abnormality in the passage of the article along the first and second portions of the path, said control circuit including timing means for controlling indications of an abnormality in the first portion of the path and means operated in synchronism with the second feeding means for controlling indications of an abnormality in the second portion of the path.
Claim 6
Dependent Claim 136 words
In an apparatus for feeding an article along a path, first feeding means for imparting continuous movement to the article along a first portion of the path, second feeding means for imparting intermittent movement to the article along a second portion of the path, detecting means disposed along the path for detecting the presence of the article in the first and second portions of the path, and a control circuit coupled to the detecting means for indicating an abnormality in the passage of the article along the first and second portions of the path, said control circuit including timing means for controlling indications of an abnormality in the first portion of the path and means operated in synchronism with the second feeding means for controlling indications of an abnormality in the second portion of the path.
Claim 7
Dependent Claim 143 words
In an apparatus for moving a copy sheet along a path of movement, a plurality of separate sheet feeding means each moving the sheet through a differenT portion of the path of movement, the feeding means being disposed along the path of movement in a sequence, a plurality of detecting means each adapted to monitor abnormalities in the movement of the copy sheet through one of the different portions of the path of movement, and a control circuit connected between the plurality of sheet-feeding means and the plurality of detecting means and controlled by the detection of an abnormality in the movement of the copy sheet in one of the different portions for inhibiting operation of the feeding means that move the copy sheet through the portions of the path of movement that are located prior to the one portion in the sequence.
Claim 8
Dependent Claim 143 words
In an apparatus for moving a copy sheet along a path of movement, a plurality of separate sheet feeding means each moving the sheet through a differenT portion of the path of movement, the feeding means being disposed along the path of movement in a sequence, a plurality of detecting means each adapted to monitor abnormalities in the movement of the copy sheet through one of the different portions of the path of movement, and a control circuit connected between the plurality of sheet-feeding means and the plurality of detecting means and controlled by the detection of an abnormality in the movement of the copy sheet in one of the different portions for inhibiting operation of the feeding means that move the copy sheet through the portions of the path of movement that are located prior to the one portion in the sequence.
Claim 9
Dependent Claim 35 words
The apparatus not forth in claim 5, including indicating means connected to and controlled by each of the detecting means for indicating the portion of the path of movement in which an abnormality is detected.
Claim 10
Dependent Claim 168 words
A monitoring device for checking the sequential movement of an item between two points, comprising first and second sensing means disposed respectively at said points with each sensing means providing a monitoring signal upon the arrival of the item at said point; circuit means including timer means coupled to said first sensing means and actuated upon receiving a monitoring signal from the first sensing element to provide a timing signal which is terminated after the elapse of a period corresponding to the time it normally takes the item to move between said sensing means; and comparator means coupled to said second sensing means and said timer means for receiving the timing signal and monitoring signal from the second sensing means, said comparator means being actuated by the timing signal to provide a control signal indicating abnormal movement of the item on termination of said timing signal unless said monitoring signal from the second sensing means is received by the comparator means before the termination of said timing signal.
Claim 11
Dependent Claim 168 words
A monitoring device for checking the sequential movement of an item between two points, comprising first and second sensing means disposed respectively at said points with each sensing means providing a monitoring signal upon the arrival of the item at said point; circuit means including timer means coupled to said first sensing means and actuated upon receiving a monitoring signal from the first sensing element to provide a timing signal which is terminated after the elapse of a period corresponding to the time it normally takes the item to move between said sensing means; and comparator means coupled to said second sensing means and said timer means for receiving the timing signal and monitoring signal from the second sensing means, said comparator means being actuated by the timing signal to provide a control signal indicating abnormal movement of the item on termination of said timing signal unless said monitoring signal from the second sensing means is received by the comparator means before the termination of said timing signal.
Claim 12
Independent Claim 140 words
An apparatus for detecting an abnormality in the movement of sheet material between spaced first and second positions on a path of movement comprising a first and second detector located at the first and second points, a timing circuit coupled to the first detection means and placed in operation by the detection of sheet material at the first point, said timing circuit providing an output signal at the termination of a predetermined time interval, a logic device supplied with the output signal, a bistable indicating means coupled to the logic device and operated to an abnormal indicating state by the logic device when the output signal is supplied by the timing circuit, and means coupling the second detecting means to the logic device to inhibit the logic device when the second detecting means detects sheet material at the second point.
Claim 13
Independent Claim 140 words
An apparatus for detecting an abnormality in the movement of sheet material between spaced first and second positions on a path of movement comprising a first and second detector located at the first and second points, a timing circuit coupled to the first detection means and placed in operation by the detection of sheet material at the first point, said timing circuit providing an output signal at the termination of a predetermined time interval, a logic device supplied with the output signal, a bistable indicating means coupled to the logic device and operated to an abnormal indicating state by the logic device when the output signal is supplied by the timing circuit, and means coupling the second detecting means to the logic device to inhibit the logic device when the second detecting means detects sheet material at the second point.
Claim 14
Dependent Claim 181 words
A monitoring device for checking the sequential movement of an item between a first point and a second point which are a predetermined distance from each other, comprising a pulse generator operated with the arrival of the item at said first point which provides a pulse concurrent with the advancement of the item a preset unit of distance, the sum of a predetermined number of said units being equal to the predetermined distance between said points; a sensing means disposed at said second point to provide a monitoring signal when the item arrives at said second point; circuit means including a pulse responsive counter connected to said generator to receive and count said pulses, said counter upon receiving a number of pulses corresponding to said predetermined number of said units providing an output signal; and comparator means coupled to said counter and said sensing means for receiving the output signal and the monitoring signal, said comparator means providing a control signal indicating abnormal movement of the item whenever said output signal is received by the comparator means before the monitoring signal.
Claim 15
Dependent Claim 181 words
A monitoring device for checking the sequential movement of an item between a first point and a second point which are a predetermined distance from each other, comprising a pulse generator operated with the arrival of the item at said first point which provides a pulse concurrent with the advancement of the item a preset unit of distance, the sum of a predetermined number of said units being equal to the predetermined distance between said points; a sensing means disposed at said second point to provide a monitoring signal when the item arrives at said second point; circuit means including a pulse responsive counter connected to said generator to receive and count said pulses, said counter upon receiving a number of pulses corresponding to said predetermined number of said units providing an output signal; and comparator means coupled to said counter and said sensing means for receiving the output signal and the monitoring signal, said comparator means providing a control signal indicating abnormal movement of the item whenever said output signal is received by the comparator means before the monitoring signal.
Claim 16
Independent Claim 186 words
An apparatus foR detecting an abnormality in the movement of sheet material along a path between spaced first and second points comprising a drive means for imparting intermittent movement to sheet material along the path between the first and second points, a counting circuit operated to successive settings by received signals and operable to supply an output signal when a predetermined number of signals has been received, a signal source operated in synchronism with the drive means and coupled to the counting circuit to supply a number of signals to the counting circuit representing the movement past the first point imparted to the sheet material by the drive means, means for indicating an abnormality in the movement of the sheet material, a logic device supplied with the output signal and coupled to the indicating means for controlling the operation of the indicating means, detecting means disposed adjacent the path and responsive to the presence of sheet material at the second point, and means coupling the detecting means to the logic device for inhibiting operation of the indicating means when the sheet material reaches the second point.
Claim 17
Independent Claim 186 words
An apparatus foR detecting an abnormality in the movement of sheet material along a path between spaced first and second points comprising a drive means for imparting intermittent movement to sheet material along the path between the first and second points, a counting circuit operated to successive settings by received signals and operable to supply an output signal when a predetermined number of signals has been received, a signal source operated in synchronism with the drive means and coupled to the counting circuit to supply a number of signals to the counting circuit representing the movement past the first point imparted to the sheet material by the drive means, means for indicating an abnormality in the movement of the sheet material, a logic device supplied with the output signal and coupled to the indicating means for controlling the operation of the indicating means, detecting means disposed adjacent the path and responsive to the presence of sheet material at the second point, and means coupling the detecting means to the logic device for inhibiting operation of the indicating means when the sheet material reaches the second point.
Claim 18
Dependent Claim 141 words
A monitoring device for checking abnormal skew movement of an item, comprising first and second sensing means spaced apart from each other and disposed along a common line which is transverse to the direction in which said item is moved so that during normal movement the item reaches both sensing means simultaneously, each of said means providing a monitoring signal upon the arrival of the item at said means; and circuit means including comparator means coupled to said first and second sensing means for receiving said monitoring signals, said circuit means including first means controlled by the receipt of one monitoring signal for presetting the comparator means to provide a control signal indicating an abnormal skew condition, said circuit means including second means operated when said monitoring signals are received simultaneously for disabling the comparator means from providing said control signal.
Claim 19
Dependent Claim 141 words
A monitoring device for checking abnormal skew movement of an item, comprising first and second sensing means spaced apart from each other and disposed along a common line which is transverse to the direction in which said item is moved so that during normal movement the item reaches both sensing means simultaneously, each of said means providing a monitoring signal upon the arrival of the item at said means; and circuit means including comparator means coupled to said first and second sensing means for receiving said monitoring signals, said circuit means including first means controlled by the receipt of one monitoring signal for presetting the comparator means to provide a control signal indicating an abnormal skew condition, said circuit means including second means operated when said monitoring signals are received simultaneously for disabling the comparator means from providing said control signal.
Claim 20
Dependent Claim 166 words
A monitoring device for checking abnormal skew movement of an item, comprising first and second sensing means spaced apart from each other and disposed along a common line which is transverse to the direction in which said item is moved so that during normal movement the item reaches both sensing means simultaneously, each of said sensing means providing a monitoring signal upon the arrival of the item at the sensing means; circuit means including timer means coupled to the first and second sensing means and responsive to monitoring signals from either of the sensing means to generate a timing signal which is terminated after a preset time interval; and comparator means coupled to the first and second sensing means and the timer means and responsive to said timing and monitoring signals to provide a control signal indicating an abnormal skew condition at the termination of said timing signal unless monitoring signals from both of said sensing means are received before the termination of the timing signal.
Claim 21
Dependent Claim 166 words
A monitoring device for checking abnormal skew movement of an item, comprising first and second sensing means spaced apart from each other and disposed along a common line which is transverse to the direction in which said item is moved so that during normal movement the item reaches both sensing means simultaneously, each of said sensing means providing a monitoring signal upon the arrival of the item at the sensing means; circuit means including timer means coupled to the first and second sensing means and responsive to monitoring signals from either of the sensing means to generate a timing signal which is terminated after a preset time interval; and comparator means coupled to the first and second sensing means and the timer means and responsive to said timing and monitoring signals to provide a control signal indicating an abnormal skew condition at the termination of said timing signal unless monitoring signals from both of said sensing means are received before the termination of the timing signal.

References Cited (Backward Citations)

US2178304A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-09-06 1975-03-08 1975-09-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-09-06 1979-03-08 1979-09-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-09-06 1983-03-08 1983-09-07 $7700.00 Window Closed / Lapsed

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