US3683803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Master making control for duplicating machine
Assignee: AB Dick Co
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Filing: 1970-07-14
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Granted: 1972-08-15
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Expires: 1990-07-14
Abstract
Abstract An apparatus and method for producing multiple copies of original documents. The apparatus converts electrostatically imaged photoconductive sheets into lithographic masters from which copies are printed under the control of a preset counter. The counter is arranged to delay the processing of a master, by preventing feeding of it into a processing path, until the printing time remaining for a previous master approximates the time required to transport the delayed master through the processing path to avoid impairment of its lithographic and handling qualities.
Inventors
- 👤 Donald R Gray
- 👤 Donald J Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:21
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/228; B; B21; B21B; B21B1/00; B21B1/16; B21B1/163; B21B15/00; B41; B41L; B41L17/00; B41L17/02; B41L17/06; B41L39/00; B41L39/16
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
207 words
The method of making multiple reproductions of each of several originals which comprises: A. exposing a first master to information on a first original to form an image on the master conforming to the information on the original; B. processing the master to render it an effective lithographic master having hydrophilic non-image surface areas thereon; C. transporting said processed master to a ready station to await installation onto a lithographic printing device; D. taking a prepared master from said ready station and printing lithographic copies from said processed master under the control of a preset counter; E. testing said ready station at all times for the presence of a master, and in the aBsence of a master, sending a signal to said counter, and programming said counter to transmit said signal only when the counter is yet greater than one but less than a count which represents a print-out time corresponding to the time required to process said master, and using the signal transmitted through said counter to repeat steps (A) and (B) with another master; F. in response to the count out of said counter, stopping said printing; G. subsequent to step E printing lithographic copies from said second master under the control of said counter.
Claim 2
Independent Claim
207 words
The method of making multiple reproductions of each of several originals which comprises: A. exposing a first master to information on a first original to form an image on the master conforming to the information on the original; B. processing the master to render it an effective lithographic master having hydrophilic non-image surface areas thereon; C. transporting said processed master to a ready station to await installation onto a lithographic printing device; D. taking a prepared master from said ready station and printing lithographic copies from said processed master under the control of a preset counter; E. testing said ready station at all times for the presence of a master, and in the aBsence of a master, sending a signal to said counter, and programming said counter to transmit said signal only when the counter is yet greater than one but less than a count which represents a print-out time corresponding to the time required to process said master, and using the signal transmitted through said counter to repeat steps (A) and (B) with another master; F. in response to the count out of said counter, stopping said printing; G. subsequent to step E printing lithographic copies from said second master under the control of said counter.
Claim 3
Independent Claim
266 words
The method of making multiple reproductions of each of several originals which comprises: A. providing a first original and a first electrostatic master sheet having a photoconductive surface; B. charging the first master and exposing it to the information on the first original to form a latent electrostatic image on the master conforming to the information on the original; C. developing the latent electrostatic image on the first master and treating the master to render it an effective lithographic master having hydrophilic non-image areas; D. transporting said processed master to a ready station to await installation onto a lithographic printing device; E. taking said treated master from said ready station and securing the master to a master cylinder of a lithographic printer; F. printing lithographic copies of the first original from the secured first master under the control of a preset counter; G. testing said ready station at all times for the presence of a master, and in the absence of a master, sending a signal to said counter, and programming said counter to transmit said signal only when the counter is yet greater than one but less than a count which represents a print-out time corresponding to the time required to process said master, and using the signal transmitted through said counter to repeat steps (A) and (B) with another master; H. in response to the count out of the counter, stopping said printing and releasing the master from the cylinder; I. subsequent to step G, securing the second master to the master cylinder and printing lithographic copies therefrom under the control of said counter.
Claim 4
Independent Claim
266 words
The method of making multiple reproductions of each of several originals which comprises: A. providing a first original and a first electrostatic master sheet having a photoconductive surface; B. charging the first master and exposing it to the information on the first original to form a latent electrostatic image on the master conforming to the information on the original; C. developing the latent electrostatic image on the first master and treating the master to render it an effective lithographic master having hydrophilic non-image areas; D. transporting said processed master to a ready station to await installation onto a lithographic printing device; E. taking said treated master from said ready station and securing the master to a master cylinder of a lithographic printer; F. printing lithographic copies of the first original from the secured first master under the control of a preset counter; G. testing said ready station at all times for the presence of a master, and in the absence of a master, sending a signal to said counter, and programming said counter to transmit said signal only when the counter is yet greater than one but less than a count which represents a print-out time corresponding to the time required to process said master, and using the signal transmitted through said counter to repeat steps (A) and (B) with another master; H. in response to the count out of the counter, stopping said printing and releasing the master from the cylinder; I. subsequent to step G, securing the second master to the master cylinder and printing lithographic copies therefrom under the control of said counter.
Claim 5
Dependent Claim
308 words
In a duplicating apparatus for making multiple reproductions of originals having graphic subject matter thereon from masters having a photosensitive potentially lithographic surface including: an original support station; a master supply source; master feeding means; imaging and master activating means including developer means for developing an ink receptive image on a master surface and for insuring the lithographic properties of the surface; first control means responsive to an indication of the presence of an original at the support station to feed a first master from said supply source into said imaging and master activating means; lithographic printing means operable between a printing cycle and a master ejection cycle; means for transporting a treated master to a ready station to await installation onto said lithographic printing means; second control means responsive to the presence of an activated first master at a predetermined position for initiating a printing cycle of said printing means; a receiving medium supply source including receiving medium feeding means operable to feed a receiving medium to said printing means during said printing cycle; means for producing a control signal to energize said master feeding means in response to the departure of said activated first master from said predetermined position to feed a second master to said imaging and master activating means; count registering means presettable to a given count for counting the number of copies produced on the receiving medium and initiating the ejection cycle of said lithographic printing means to eject said first master when said preset count is obtained; means to transmit said contRol signal to said count registering means; said count registering means being programmed to transmit said signal only when the count is greater than one but less than a count which represents a print-out time corresponding to the time required to process a master through said image and master activating means.
Claim 6
Dependent Claim
308 words
In a duplicating apparatus for making multiple reproductions of originals having graphic subject matter thereon from masters having a photosensitive potentially lithographic surface including: an original support station; a master supply source; master feeding means; imaging and master activating means including developer means for developing an ink receptive image on a master surface and for insuring the lithographic properties of the surface; first control means responsive to an indication of the presence of an original at the support station to feed a first master from said supply source into said imaging and master activating means; lithographic printing means operable between a printing cycle and a master ejection cycle; means for transporting a treated master to a ready station to await installation onto said lithographic printing means; second control means responsive to the presence of an activated first master at a predetermined position for initiating a printing cycle of said printing means; a receiving medium supply source including receiving medium feeding means operable to feed a receiving medium to said printing means during said printing cycle; means for producing a control signal to energize said master feeding means in response to the departure of said activated first master from said predetermined position to feed a second master to said imaging and master activating means; count registering means presettable to a given count for counting the number of copies produced on the receiving medium and initiating the ejection cycle of said lithographic printing means to eject said first master when said preset count is obtained; means to transmit said contRol signal to said count registering means; said count registering means being programmed to transmit said signal only when the count is greater than one but less than a count which represents a print-out time corresponding to the time required to process a master through said image and master activating means.
Claim 7
Dependent Claim
303 words
A duplicating apparatus for making multiple reproductions of originals having graphic subject matter thereon, from masters having photoconductive surfaces, to receiving sheets, comprising: an original feed in station including original feeding means; a master supply source; master feeding means; photoelectrostatic imaging means including developer means for applying electroscopic resin powder to a surface of a master; a first control means responsive to the feeding of an original for actuating said master feeding means to feed a first master from said supply source in timed relation with said original into said photoelectrostatic imaging means; master activating means for supplying an aqueous solution to said master selectively rendering the non-image portions hydrohpilic; lithographic printing means operable between a printing cycle and a master ejection cycle; second control means responsive to the presence of said activated first master at the predetermined position for initiating the printing cycle of said printing means; a receiving sheet supply source including a receiving sheet feeding means operable to feed receiving sheets to said printing means during said printing cycle; means for establishing a control signal for energizing said master feeding means in response to the departure of said activated first master from said predetermined position; count registering means, presettable to a given count, for counting the number of copies produced and initiating the ejection cycle of said lithographic printing means to eject said first master when said preset count is obtained and including mean for completing a control circuit from said means to establish a control signal to said master feeding means to cause that means to feed a second master only while the count for copies of the first original is above a predetermined number greater than zero and within a range which represents a time interval substantially corresponding to the time required to image and activate a master.
Claim 8
Dependent Claim
303 words
A duplicating apparatus for making multiple reproductions of originals having graphic subject matter thereon, from masters having photoconductive surfaces, to receiving sheets, comprising: an original feed in station including original feeding means; a master supply source; master feeding means; photoelectrostatic imaging means including developer means for applying electroscopic resin powder to a surface of a master; a first control means responsive to the feeding of an original for actuating said master feeding means to feed a first master from said supply source in timed relation with said original into said photoelectrostatic imaging means; master activating means for supplying an aqueous solution to said master selectively rendering the non-image portions hydrohpilic; lithographic printing means operable between a printing cycle and a master ejection cycle; second control means responsive to the presence of said activated first master at the predetermined position for initiating the printing cycle of said printing means; a receiving sheet supply source including a receiving sheet feeding means operable to feed receiving sheets to said printing means during said printing cycle; means for establishing a control signal for energizing said master feeding means in response to the departure of said activated first master from said predetermined position; count registering means, presettable to a given count, for counting the number of copies produced and initiating the ejection cycle of said lithographic printing means to eject said first master when said preset count is obtained and including mean for completing a control circuit from said means to establish a control signal to said master feeding means to cause that means to feed a second master only while the count for copies of the first original is above a predetermined number greater than zero and within a range which represents a time interval substantially corresponding to the time required to image and activate a master.
Claim 9
Dependent Claim
53 words
The apparatus as set forth in Claim 8 wherein said count registering means comprises a plurality of counter assemblies each representing a counter column and said energization establishing means includes a switch associated with at least one of said counter assemblies electrically operable to complete a circuit to cause feeding of a master.
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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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |