Patent US3575503A successfully refreshed from Google Patents.
US3575503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copying machine
Assignee: COPYSTATICS Inc C/O LOWENTHAL A DE CORP
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Filing: 1968-04-30
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Granted: 1971-04-20
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Expires: 1988-04-30
Abstract
Abstract An electrostatic copying machine capable of very fast operation in a reciprocating multiple copy mode. The original document to be copied is transported through the machine past the scanning window. After a first copy has been made the document itself is shuttled back past the scanning window until the leading edge of the original is at the front end of the scanning window. At this time another forward movement and scan take place, and another copy is made. This process is repeated for as many times as the number of copies required. The overall operation is fast for two reasons. First, the reverse feed rate of the original is greater than the forward feed rate since during reverse feed there is no scanning. Second, the copy paper feed begins during the reverse travel of the original such that by the time the leading edge of the original reaches the front end of the scanning window, the leading edge of the copy paper reaches the front end of the exposure window and exposure can proceed without lost time. During forward feed the original is moved only until the trailing edge clears the scanning window. During reverse feed the original is moved only until the leading edge clears the scanning window. The use of a cam which can be clutched to the original drive system permits the copy feed to start at a time such that perfect registration is assured when the original forward feed begins, independent of the length of the original.
Inventors
- 👤 John A Van Auken
- 👤 M Gene Kaufman
- 👤 Lionel B Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:12
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/28
Claims Analysis
Total Claims: 44
Claim 1
Independent Claim
118 words
A copying machine comprising a scanning window, roller means for engaging and transporting an original document to be copied in the forward direction past said scanning window, an exposure window, means for transporting copy paper past said exposure window in synchronism with the forward movement of said original past said scanning window, means for scanning said original at said scanning window and in response thereto for exposing said copy paper at said exposure window, and means for controlling said roller means to return said original in the reverse direction past said scanning window to permit another forward movement of said original past said scanning window and another exposure of copy paper at said exposure window in response thereto.
Claim 2
Dependent Claim
118 words
A copying machine comprising a scanning window, roller means for engaging and transporting an original document to be copied in the forward direction past said scanning window, an exposure window, means for transporting copy paper past said exposure window in synchronism with the forward movement of said original past said scanning window, means for scanning said original at said scanning window and in response thereto for exposing said copy paper at said exposure window, and means for controlling said roller means to return said original in the reverse direction past said scanning window to permit another forward movement of said original past said scanning window and another exposure of copy paper at said exposure window in response thereto.
Claim 3
Dependent Claim
37 words
A copying machine in accordance with claim 1 wherein said roller means returns said original past said scanning window in said reverse direction at a speed greater than the speed of said original in said forward direction.
Claim 4
Dependent Claim
80 words
A copying machine in accordance with claim 2 further including a roll of copy paper, means for initiating the feed of said copy paper from said roll toward said exposure window at the speed of said original in said forward direction responsive to the detection of the leading edge of said original, and means for cutting a copy sheet from said roll and stopping the feed from said roll responsive to the detection of the trailing edge of said original.
Claim 5
Dependent Claim
38 words
A copying machine in accordance with claim 3 further including means for automatically initiating the feed of said copy paper toward said exposure window while said original is being transported in the reverse direction past said scanning window.
Claim 6
Dependent Claim
83 words
A copying machine in accordance with claim 4 further including means adapted to be driven with said roller means responsive to the detection of the leading edge of said original and for moving in a first direction while said original continues in its forward direction and for thereafter moving in a second opposite direction while said original is moved in its reverse direction, and means responsive to the movement in said second direction of said driven means for operating said automatically initiating means.
Claim 7
Dependent Claim
63 words
A copying machine in accordance with claim 4 further including means for representing the number of copies required of said original, means for decrementing said representing means responsive to each copy made by the machine, and means for discharging said original from the machine in accordance with the number represented by said representing means after the required number of copies have been made.
Claim 8
Dependent Claim
90 words
A copying machine in accordance with claim 6 wherein said scanning means includes an exposure lamp, means for energizing said lamp before the leading edge of said original reaches the front edge of said scanning window and for maintaining said lamp energiZed until the trailing edge of said original has passed said scanning window, and means responsive to more than one required copy being represented by said representing means for preventing the deenergization of said exposure lamp until after said original has passed said scanning window for the last time.
Claim 9
Dependent Claim
67 words
A copying machine in accordance with claim 3 further including means for preventing the operation of said cutting means until a predetermined minimum length of copy paper has been fed from said roll, and means for controlling the operation of said cutting means after a maximum length of copy paper has been fed from said roll independent of the detection of the trailing edge of said original.
Claim 10
Dependent Claim
58 words
A copying machine in accordance with claim 3 further including deflector means for forming a slack portion in said copy paper between said paper roll feed initiating means and said exposure window, said slack being taken up during any interval between the stopping of said feed initiating means and the completion of the operation of said cutting means.
Claim 11
Dependent Claim
111 words
A copying machine in accordance with claim 5 wherein said driven means controls the operation of said automatically initiating means at a time during its movement in said second direction such that the ratio of the distance from the leading edge of said original to that point in its forward path of movement where it becomes synchronized to movement of said copy paper to the distance from said cutting means to that point in the copy paper path of movement where said copy paper becomes synchronized to forward movement of said original is equal to the ratio of the reverse speed of said original to the forward speed of said original.
Claim 12
Dependent Claim
208 words
A copying machine comprising a scanning window, means for controlling the transport of an original document to be copied in the forward direction past said scanning window, an exposure window, means for transporting copy paper past said exposure window in synchronism with the forward movement of said original past said scanning window, means for scanning said original at said scanning window and in response thereto for exposing said copy paper at said exposure window, means for controlling the transport of said original in the reverse direction past said scanning window to permit another forward movement of said original past said scanning window and another exposure of copy paper at said exposure window in response thereto, said reverse transport controlling means being operative to control movement of said original past said scanning window at a speed greater than the speed at which said original moves past said scanning window in the forward direction, and means for initiating the operation of said copy paper transporting means while said original is being transported in the reverse direction past said scanning window at a time such that when said original starts to be transported in the forward direction the leading edges of said original and said copy paper are in optical synchronization.
Claim 13
Dependent Claim
208 words
A copying machine comprising a scanning window, means for controlling the transport of an original document to be copied in the forward direction past said scanning window, an exposure window, means for transporting copy paper past said exposure window in synchronism with the forward movement of said original past said scanning window, means for scanning said original at said scanning window and in response thereto for exposing said copy paper at said exposure window, means for controlling the transport of said original in the reverse direction past said scanning window to permit another forward movement of said original past said scanning window and another exposure of copy paper at said exposure window in response thereto, said reverse transport controlling means being operative to control movement of said original past said scanning window at a speed greater than the speed at which said original moves past said scanning window in the forward direction, and means for initiating the operation of said copy paper transporting means while said original is being transported in the reverse direction past said scanning window at a time such that when said original starts to be transported in the forward direction the leading edges of said original and said copy paper are in optical synchronization.
Claim 14
Dependent Claim
85 words
A copying machine in accordance with claim 11 further including means adapted to be driven by said forward transport controlling means in response to the detection of the leading edge of said original and for moving in a first direction while said original continues in its forward direction and for thereafter moving in a second opposite direction while said original is moved in its reverse direction, and means responsive to the movement in said second direction of said driven means for operating said initiating means.
Claim 15
Dependent Claim
104 words
A copying machine in accordance with claim 11 wherein said initiating means operates at a time during the reverse movement of said original such that the loading edge of said copy paper is in synchronization with the leading edge of said original at the same time that the leading edge of said original moving in said reverse direction reaches the front edge of said scanning window, and further including means responsive to the leading edge of said original rEaching the front edge of said scanning window for deenergizing said reverse transport controlling means and for enabling the operation of said forward transport controlling means.
Claim 16
Dependent Claim
111 words
A copying machine in accordance with claim 11 wherein said scanning and exposing means includes an exposure lamp, means for energizing said lamp before the leading edge of said original reaches the front edge of said scanning window and for maintaining said lamp energized until the trailing edge of said original has passed said scanning window, and means responsive to more than one copy of said original being made by the machine for preventing the deenergization of said exposure lamp until after said original has passed said scanning window in the forward direction a number of times equal to the number of times equal to the number of copies being made.
Claim 17
Dependent Claim
126 words
A copying machine in accordance with claim 11 further including a copy paper roll, means for feeding paper from said copy paper roll to said copy paper transporting means, means for cutting a sheet from said copy paper roll and for stopping the feed of copy paper from said roll responsive to the length of copy paper fed from said roll being equal to the length of said original, means for preventing the operation of said cutting and stopping means until a predetermine minimum length of copy paper has been fed from said roll, and means for controlling the operation of said cutting and stopping means after a maximum length of copy paper has been fed from said roll independent of the length of said original.
Claim 18
Dependent Claim
138 words
A copying machine comprising a scanning window, means for controlling the transport of an original document to be copied in the forward direction past said scanning window, means for making a copy of said original responsive to each forward pass of said original past said scanning window, means for controlling the transport of said original in the reverse direction past said scanning window in preparation for the making of another copy, means for deenergizing said forward transport controlling means and for energizing said reverse transport controlling means responsive to the trailing edge of said original just clearing the rear edge of said scanning window, and means for deenergizing said reverse transport controlling means and for energizing said forward transport controlling means responsive to the leading edge of said original just clearing the front edge of said scanning window.
Claim 19
Dependent Claim
138 words
A copying machine comprising a scanning window, means for controlling the transport of an original document to be copied in the forward direction past said scanning window, means for making a copy of said original responsive to each forward pass of said original past said scanning window, means for controlling the transport of said original in the reverse direction past said scanning window in preparation for the making of another copy, means for deenergizing said forward transport controlling means and for energizing said reverse transport controlling means responsive to the trailing edge of said original just clearing the rear edge of said scanning window, and means for deenergizing said reverse transport controlling means and for energizing said forward transport controlling means responsive to the leading edge of said original just clearing the front edge of said scanning window.
Claim 20
Dependent Claim
37 words
A copying machine in accordance with claim 16 wherein said reverse transport controlling means controls the movement of said original at a speed greater than the speed of said original controlled by said forward transport controlling means.
Claim 21
Dependent Claim
59 words
A copying machine in accordance with claim 17 wherein said copy making means includes a supply of copy paper and means for initiating movement of a sheet of said copy paper during reverse movement of said original such that when said original starts moving in the forward direction said original and said copy sheet are in copy making synchronism.
Claim 22
Dependent Claim
121 words
A copying machine in accordance with claim 18 wherein said copy making means includes an exposure window past which said copy sheet is moved, and said copy sheet movement initiating means operates at a time during the reverse movement of said original when the distance between the leading edge of said original and that point in its forward path of movement where it becomes synchronized to movement of said copy sheet divided by said reverse speed is equal to the distance between the leading edge of said copy sheet and that point in the copy sheet path of movement where said copy sheet becomes synchronized to forward movement of said original divided by the speed of movement of said copy sheet.
Claim 23
Dependent Claim
212 words
A copying machine comprising a scanning window, means for controlling the transport of an original document to be copied in the forward direction past said scanning window, means for controlling the transport of said original in the reverse dIrection past said scanning window, an exposure window, means for transporting copy paper past said exposure window, first means responsive to said original being first inserted in the machine for initiating the transport of copy paper by said copy paper transporting means at a time such that the leading edge of said original within said scanning window is in synchronization with the leading edge of said copy paper within said exposure window, means responsive to the trailing edge of said original clearing said scanning window for deenergizing said forward transport controlling means and for energizing said reverse transport controlling means, second means for initiating the transport of copy paper by said copy paper transporting means during reverse movement of said original past said scanning window prior to the clearing of said scanning window by said original, and means for deenergizing said reverse transport controlling means and energizing said forward transport controlling means at a time when forward movement of said original will cause it to be in synchronization with movement of said copy paper.
Claim 24
Dependent Claim
212 words
A copying machine comprising a scanning window, means for controlling the transport of an original document to be copied in the forward direction past said scanning window, means for controlling the transport of said original in the reverse dIrection past said scanning window, an exposure window, means for transporting copy paper past said exposure window, first means responsive to said original being first inserted in the machine for initiating the transport of copy paper by said copy paper transporting means at a time such that the leading edge of said original within said scanning window is in synchronization with the leading edge of said copy paper within said exposure window, means responsive to the trailing edge of said original clearing said scanning window for deenergizing said forward transport controlling means and for energizing said reverse transport controlling means, second means for initiating the transport of copy paper by said copy paper transporting means during reverse movement of said original past said scanning window prior to the clearing of said scanning window by said original, and means for deenergizing said reverse transport controlling means and energizing said forward transport controlling means at a time when forward movement of said original will cause it to be in synchronization with movement of said copy paper.
Claim 25
Dependent Claim
40 words
A copying machine in accordance with claim 20 wherein said second means operates at a time during reverse movement of said original when the leading edge of said original has not yet reached the rear edge of said scanning window.
Claim 26
Dependent Claim
40 words
A copying machine in accordance with claim 21 wherein said reverse transport controlling means controls movement of said original past said scanning window at a speed greater than the speed of said original controlled by said forward transport controlling means.
Claim 27
Dependent Claim
49 words
A copying machine in accordance with claim 20 wherein said means for deenergizing said reverse transport controlling means and for energizing said forward transport controlling means operates responsive to the leading edge of said original having just cleared the forward edge of said scanning window in the reverse direction.
Claim 28
Dependent Claim
49 words
A copying machine in accordance with claim 21 wherein said means for deenergizing said reverse transport controlling means and for energizing said forward transport controlling means operates responsive to the leading edge of said original having just cleared the forward edge of said scanning window in the reverse direction.
Claim 29
Dependent Claim
40 words
A copying machine in accordance with claim 20 wherein said reverse transport controlling means controls movement of said original past said scanning window at a speed greater than the speed of said original controlled by said forward transport controlling means.
Claim 30
Dependent Claim
49 words
A copying machine in accordance with claim 25 wherein said means for deenergizing said reverse transport controlling means and for energizing said forward transport controlling means operates responsive to the leading edge of said original having just cleared the forward edge of said scanning window in the reverse direction.
Claim 31
Dependent Claim
101 words
A copying machine in accordance with claim 20 further including a roll of copy paper, said first and second initiating means controlling the feed of copy paper from said roll to said copy paper transporting means, said first means being operative to initiate the feeding of copy paper from said copy paper roll responsive to the detection of the leading edge of said original, and means responsive to the detection by said first means of the trailing edge of said original for cutting the copy paper fed from said roll and for stopping further feed of copy paper from said roll.
Claim 32
Dependent Claim
125 words
A copying machine in accordance with claim 27 wherein said second means includes means adapted to be driven in synchronism with said forward and reverse transport controlling means, means responsive to the detection of the leading edge of said original for controlling the forward driving of said driven means in synchronism with said forward transport controlling means, said driven means thereafter being driven in its reverse direction in synchronism with said reverse transport controlling means responsive to the energization of said reverse transpoRt controlling means and the deenergization of said forward transport controlling means, and means responsive to the return of said driven means to predetermined point in its path of reverse movement for initiating the feed of copy paper from said copy paper roll.
Claim 33
Dependent Claim
47 words
A copy machine in accordance with claim 28 wherein said predetermined point in the path of reverse movement of said driven means is such that when said point is reached the leading edge of said original has not yet reached the rear edge of said scanning window.
Claim 34
Dependent Claim
118 words
A copying machine in accordance with claim 28 wherein said reverse transport controlling means controls reverse movement of said original at a speed greater than the forward speed of said original controlled by said forward transport controlling means, said copy paper transporting means transports said copy paper at a speed equal to the forward speed of said original, and said predetermined point in the path of reverse movement of said driven means is such that between the time that said point is reached and the time that said reverse transport controlling means is deenergized said original moves an amount in the reverse direction such that its subsequent forward movement is in synchronization with movement of said copy paper.
Claim 35
Dependent Claim
49 words
A copying machine in accordance with claim 30 further including means for representing the number of copies required of said original, and means for discharging said original from the machine in accordance with the number represented by said representing means after the required number of copies have been made.
Claim 36
Dependent Claim
91 words
A copying machine in accordance with claim 27 further including means for preventing the stopping of said paper feed from said roll and the operation of said cutting means until a predetermined minimum length of copy paper has been fed from said roll, and means for controlling the stopping of said paper feed from said roll and the operation of said cutting means after a maximum length of copy paper has been fed from said roll independent of the detection of the trailing edge of said original by said first means.
Claim 37
Dependent Claim
57 words
A copying machine in accordance with claim 27 further including means for forming a slack portion in said copy paper between said cutting means and said exposure window, said slack being taken up during any interval between the stopping of the feed of said copy paper roll and the completion of the operation of said cutting means.
Claim 38
Dependent Claim
49 words
A copying machine in accordance with claim 27 further including means for representing the number of copies required of said original, and means for discharging said original from the machine in accordance with the number represented by said representing means after the required number of copies have been made.
Claim 39
Dependent Claim
87 words
A copying machine in accordance with claim 34 further including a lamp for reflecting light from said original as it passes said scanning window toward said copy paper as it passes said exposure window, means for energizing said lamp before the leading edge of said original reaches the front edge of said scanning window, and means responsive only to said original having passed said scanning window in the forward direction a number of times equal to the number represented by said representing means for deenergizing said lamp.
Claim 40
Dependent Claim
241 words
A copying machine comprising a scanning window, means for controlling the transport of an original document to be copied in the forward direction past said scanning window, means for controlling the transport of said original in the reverse direction past said scanning window, an exposure window, means for transporting copy paper past said exposure window, first means in the forward path of movement of said original document for sensing said original document when it is first is inserted in the machine to initiate the transport of copy paper by said copy paper transporting means at a time such that the leading edge of said original within said scanning window is in synchronization with the leading edge of Said copy paper within said exposure window, means for scanning said original within said scanning window and exposing said copy paper within said exposure window, means operative after the scanning of said original and exposure of said copy paper are completed for deenergizing said forward transport controlling means and for energizing said reverse transport controlling means, second means for initiating the transport of copy paper by said copy paper transporting means during reverse movement of said original past said scanning window prior to the completion thereof, and means for deenergizing said reverse transport controlling means and energizing said forward transport controlling means at a time when forward movement of said original will cause it to be in synchronization with movement of said copy paper.
Claim 41
Dependent Claim
241 words
A copying machine comprising a scanning window, means for controlling the transport of an original document to be copied in the forward direction past said scanning window, means for controlling the transport of said original in the reverse direction past said scanning window, an exposure window, means for transporting copy paper past said exposure window, first means in the forward path of movement of said original document for sensing said original document when it is first is inserted in the machine to initiate the transport of copy paper by said copy paper transporting means at a time such that the leading edge of said original within said scanning window is in synchronization with the leading edge of Said copy paper within said exposure window, means for scanning said original within said scanning window and exposing said copy paper within said exposure window, means operative after the scanning of said original and exposure of said copy paper are completed for deenergizing said forward transport controlling means and for energizing said reverse transport controlling means, second means for initiating the transport of copy paper by said copy paper transporting means during reverse movement of said original past said scanning window prior to the completion thereof, and means for deenergizing said reverse transport controlling means and energizing said forward transport controlling means at a time when forward movement of said original will cause it to be in synchronization with movement of said copy paper.
Claim 42
Dependent Claim
51 words
A copying machine in accordance with claim 36 wherein said means for deenergizing said reverse transport controlling means and energizing said forward transport controlling means operates prior to return of the original to that position at which said first means is operative when said original is first inserted in the machine.
Claim 43
Dependent Claim
185 words
A copying machine in accordance with claim 36 further including a roll of copy paper, said copy paper transporting means including means for feeding copy paper from said roll and means for moving copy paper fed from said roll to said exposure window, means responsive to the operation of said first means for operating said copy paper feeding means, means disposed between said feeding means and said moving means for cutting a copy sheet from copy paper fed from said roll, means for inhibiting the operation of said feeding means and controlling the operation of said cutting means such that the length of the cut copy sheet is equal to that of the original, and deflector means for forming a slack portion in said copy paper between said cutting means and said exposure window, the total slack portion formed being at least as great as the slack taken up during any interval between the stopping of said feeding means and the completion of the operation of said cutting means to permit continued normal operation of said moving means while said copy paper is being cut.
Claim 44
Dependent Claim
35 words
A copying machine in accordance with claim 38 wherein said feeding means is a pair of rollers and said moving means includes a pair of rollers disposed between said exposure window and said deflector means.
References Cited (Backward Citations)
US3181420A
Cited
US3445160A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |