US3909128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control logic for changing a multi-mode copier/duplicator from one mode to another
Assignee: Xerox Corp
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Filing: 1974-11-29
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Granted: 1975-09-30
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Expires: 1994-11-29
Abstract
Abstract In a multi-mode automatic copier/duplicator designed to make copies of different sizes in different modes, a control apparatus is provided for completing a mode change automatically once the mode change is initiated by an operator and conditioning the machine to be ready to operate in the mode to which it is changed.
Inventors
- 👤 Lawrence R Sohm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:36
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/14; G03G15/00; G03G15/22; G03G15/28; G03G15/30
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
277 words
A control apparatus in an automatic reproducing machine having scanning means for scanning a stationary document original and document original feeding means for feeding a document original past said scanning means while said scanning means is held stationary, said machine being designed to operate in a first mode wherein said scanning means is moved for scanning said stationary document original, and in a second mode wherein said document original feeding means is positioned in an engaged position for feeding a document original past said scanning means while it is held in said stationary position, comprising: mode change starting means including means for moving said document original feeding means from a disengaged position to said engaged position, control circuitry including means responsive to the movement of said document original feeding means to said engaged position from said disengaged position for completing said mode change operation by conditioning said machine so that said scanning means is held in said stationary position, a plurality of reproducing step implementing means, means to set said machine in said first or said second mode, first means responsive to the setting of the machine in said first mode and responsive to the starting operation for generating a plurality of process step implementing signals, means for applying said process step implementing means for effecting the reproducing steps in said first mode of operation, and Second means responsive to the setting of the machine in said second mode and responsive to the starting operation for generating a plurality of process step implementing signals and applying said process step implementing signals to said plurality of means for effecting the reproducing steps in said second mode of operation.
Claim 2
Dependent Claim
277 words
A control apparatus in an automatic reproducing machine having scanning means for scanning a stationary document original and document original feeding means for feeding a document original past said scanning means while said scanning means is held stationary, said machine being designed to operate in a first mode wherein said scanning means is moved for scanning said stationary document original, and in a second mode wherein said document original feeding means is positioned in an engaged position for feeding a document original past said scanning means while it is held in said stationary position, comprising: mode change starting means including means for moving said document original feeding means from a disengaged position to said engaged position, control circuitry including means responsive to the movement of said document original feeding means to said engaged position from said disengaged position for completing said mode change operation by conditioning said machine so that said scanning means is held in said stationary position, a plurality of reproducing step implementing means, means to set said machine in said first or said second mode, first means responsive to the setting of the machine in said first mode and responsive to the starting operation for generating a plurality of process step implementing signals, means for applying said process step implementing means for effecting the reproducing steps in said first mode of operation, and Second means responsive to the setting of the machine in said second mode and responsive to the starting operation for generating a plurality of process step implementing signals and applying said process step implementing signals to said plurality of means for effecting the reproducing steps in said second mode of operation.
Claim 3
Dependent Claim
26 words
The control apparatus according to claim 1, wherein said first means comprises a first circuit means and wherein said second means comprises a second circuit means.
Claim 4
Dependent Claim
90 words
The control apparatus according to claim 2, wherein said first circuit means is adapted to start and stop the operation of said scanning means while said document original feeding means is held in a disengaged position, and said second circuit means is adapted to start and stop the operation of the reproducing steps upon the detection of the leading edge and trailing edges of the document original being fed by said document original feeding means held in an engaged position while said scanning means is held in said stationary position.
Claim 5
Dependent Claim
40 words
The control apparatus according to claim 3, wherein said second circuit means is adapted to stop the operation of the machine when the trailing edge of document original is detected before the trailing edge of the copy sheet is detected.
Claim 6
Dependent Claim
41 words
The control apparatus according to claim 3, wherein said second circuit means is adapted to enable said machine to stop the operation when the trailing edge of copy sheet is detected before the trailing edge of the document original is detacted.
Claim 7
Dependent Claim
52 words
The apparatus according to claim 3, including: means for detecting the mode changeover from said first mode to said second mode and generating a changeover signal and means responsive to said changeover signal for automatically completing the changeover operation and enabling said means for generating said plurality of process step implementing signals.
Claim 8
Dependent Claim
164 words
The control apparatus according to claim 6, wherein said machine includes a drive means for driving a plurality of moving parts of said machine, mode change starting means including lever means for moving said document original feeding means to an engaged position from a disengaged position for setting the machine in said second mode, means for coupling said document original feeding means to said drive means as said document original feeding means is moved to said engaged position by said lever means, means for sensing the movement of said automatic document feeding means toward said engaged position, means responsive to said movement for generating a mode change order signal indicative of a change from said first mode to said second mode and a second mode status signal, and said second circuit means being adapted to respond to said mode change order signal for completing the mode change and to respond to said second mode status signal for operating said machine in said second mode.
Claim 9
Dependent Claim
70 words
The control apparatus according to claim 7, wherein in said first mode, said movable scanning means is returned to a home position after a scanning operation and set normally, said mode change order signal enabling said machine to move said scanning means to the end of scan position, and means for retaining said scanning means at the end of said scan position in response to said second mode status signal.
Claim 10
Dependent Claim
222 words
The control apparatus according to claim 8, including a DC power source, first sensing means for sensing said scanning means being positioned at the home position and generating a logical signal of one state and generating a logical signal of opposite state when said scanning means leaves the home position, second sensing means for providing a logical signal of one state when said document feeding means is in said disengaged position and changing said logical signal to its opposite state when said document feeding means is moved to said engaged position, third sensing means for sensing the movement of said document feeding means toward said engaged positiOn and adapted to supply said DC power to said first and second logic means, said second circuit means adapted to be responsive to the change of the state of the output of said second sensing means to provide a signal for preventing said copy sheet feeding means from feeding copy sheets and for enabling said scanning means to move to the end of scan position, fourth sensing means sensing said scanning means reaching said end of scan position, and means including said second circuit means responsive to the output of said fourth sensing means for retaining said scanning means at the end of scan position, and conditioning said machine to operate in said second mode.
Claim 11
Dependent Claim
32 words
The control apparatus according to claim 9 wherein said first, second and fourth sensing means include switches held in one state normally and said third sensing means includes a one-way roll-over switch.
Claim 12
Dependent Claim
88 words
The control apparatus according to claim 10, including a visual indicating means, said second circuit means adapted to turn said indicating means off, said second circuit means being adapted to respond to the change in the output of said mode change sensing means to turn on said visual indication means, said visual indicating means including ''''WAIT'''' status lamp which lights when turned on, and said second circuit means being responsive to the change in the output of said fourth sensing means for turning off said visual indicating means.
Claim 13
Dependent Claim
50 words
The control apparatus according to claim 10, wherein said second circuit means is responsive to said mode change signal for causing said copy sheet feeding means to disengage from said drive means while said lever means is being moved to place said document original feeding means to said engaged position.
Claim 14
Dependent Claim
35 words
The control apparatus according to claim 1 wherein said apparatus is adapted to provide said mode changing operation for said machine having means for making copies of different sizes from different size document originals selectively.
Claim 15
Dependent Claim
28 words
The control apparatus according to claim 1 including an automatic recirculating document feeder for automatically feeding the same or different document originals in succession past the scanning means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |