US3689742A - Printed copy sheet number read-out device - Google Patents

Printed copy sheet number read-out device Download PDF

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Publication number
US3689742A
US3689742A US69567A US3689742DA US3689742A US 3689742 A US3689742 A US 3689742A US 69567 A US69567 A US 69567A US 3689742D A US3689742D A US 3689742DA US 3689742 A US3689742 A US 3689742A
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United States
Prior art keywords
marks
read
printed
timing
reading
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Expired - Lifetime
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US69567A
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English (en)
Inventor
Yoshiharu Kagari
Toshiya Ogawa
Koichi Hirokawa
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Ricoh Co Ltd
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Ricoh Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
    • B41L39/00—Indicating, counting, warning, control, or safety devices

Definitions

  • a printed copy sheet number read-out device adapted for use with an offset printing machine which permits [30] Fore'gn Apphcano" Pnomy Dam one master plate after another to be automatically Sept. 9, 1969 Japan ..44/7l487 mounted on its master cylinder.
  • Each master plate to be duplicated by this machine is provided in one mar- [52] U.S. Cl ..235/61.1l E, 235/92 PD, 235/92 SB, ginal portion thereof with a plurality of sets of timing 235/92 PE marks each set representing the column of the number Int.
  • the present invention provides improvements in or relating to the printed copy sheet read-out device.
  • the invention eliminates the identification marks and uses a gate circuit which is opened and closed by means associated with the rotation of the master cylinder for controlling the mark read-out means so that read-out of the marks can be effected promptly and positively.
  • This invention relates to a printed copy sheet number read-out device for offset printing machine.
  • a printing operation carried out by a rotary offset printing machine comprises an ink forming step, master plate mounting step, etching step, inking step and copy sheet feed step.
  • the duplicated master plate is removed from the master cylinder and the peripheral surface of the blanket cylinder is cleaned.
  • This invention has as its object the provision of a printed copy sheet number read-out device adapted for use with offset printing machines in which the aforementioned operation steps are' carried out automatically.
  • the read-out device according to this invention is characterized by indicating the number of copy sheets to be printed by setting data marks on timing marks provided in one marginal portion of each master plate, and causing the indicated number to be read by readout means and stored in a counter memory circuit, so that the copy sheet feed operation may be automatically stopped when a predetermined number of copy sheets have been printed.
  • the device is also characterized by the fact that the time at which the predetermined number of copy sheets to be printed as indicated by the data marks and timing marks is read out is controlled by a signal produced in synchronism with the rotation of the master cylinder, blanket cylinder or impression cylinder of the printing machine.
  • FIG. 1 is a side view as seen from the left of a small offset printing machine in which the device according to this invention is incorporated;
  • FIG. 2 is a plan view of a master plate provided with marks according to this invention.
  • FIG. 3 is a schematic view of mark read-out means according to this invention.
  • FIG. 4 is a view in explanation of the relative positions of the marks on a master plate and light receiving elements
  • FIG. 5 is a plan view showing the arrangement of a photoelectric transducer element for controlling a gate circuit
  • FIG. 6 is a systematic diagram of one example of the electric circuit of the device according to this invention.
  • FIG. 7 is a systematic diagram showing the manner of operation of one example of the column numeral control circuit according to this invention.
  • FIG. 1 a start button 3, temporary stop button 4, printed copy sheet number setting change-over button 5, master plate feed operation change-over button 6- and printed copy sheet number indication change-over button 7 are provided on a panel 2 secured to a left side plate 1 of the offset printing machine.
  • the printed copy sheet number setting change-over button 5 is intended for use when a decision has been made as to whether the number of copy sheets to be printed should be automatically set by means of the marks provided on each master plate or set manually.
  • the master plate feed operation change-over button 6 is intended for use when a decision has been made as to whether or not the next successive master plate'should be automatically mounted on the master cylinder after the duplication of one master plate has been completed.
  • the printed copy sheet indication changeover button 7 is intended for use when a decision has been made as to whether the indicator should set so as to indicate the number of copy sheets printed for each master plate or the total number of copy sheets printed for a plurality of master plates.
  • a printed copy sheet number indicator 8 Provided on the right side of the panel 2 are a printed copy sheet number indicator 8, a setter 9 for setting beforehand the number of copy sheets to be printed, and
  • indication tube 10 for indicating the number of printed copy sheets in accordance with the marks provided on each master plate.
  • a master cylinder 11, blanket cylinder 12 and impression cylinder 13 which are coupled to one another through gears of the same diameter having the same number of teeth. All the cylinders 11, 12 and 13 are adapted to rotate in the directions of the arrows when the main switch of the printing machine is turned on.
  • a follower arm 14 is operated by a cam 15 formed integrally with a blanket cylinder 12, and a free end 16a of a pivotal lever 16 formed integrally with the follower arm 16 moves in swinging motion in the rear of a light receiving window 17, thereby causing pulses to be produced for counting the number of copy sheets printed.
  • a plurality of master plates l9' is piled on a master plate tray 18 disposed on the upper right hand of the side plate 1.
  • Printed copy sheet number read-out means 20 which is provided above the outer peripheral portion of the master cylinder 11 is formed on its underside with a light receiving window which is juxtaposed to a marginal portion of the master plate mounted on the master cylinder 11.
  • a light source lamp 21 which illuminates the marginal portion of the master plate on the master cylinder on which data marks and timing marks are disposed.
  • the light from the light source lamp 21 is incident on photoelectric transducer elements 22t, 22d, such as of the cadmium sulfide type, after passing through a lens.
  • a rotary segmental plate 23 is mounted on a master cylinder supporting shaft for rotation with the master cylinder 11 as a unit.
  • a light source lamp 24 and photoelectric transducer 25 for opening and closing a gate circuit, subsequently to be described, are mounted on the side plate 1 and-spaced apart from each other by a small space through which the segmental plate 23 moves during its rotation.
  • the master cylinder supporting shaft 1 1a extending through the side wall 1 mounts thereon the segmental plate 23 which moves in rotary motion through a path extending between the light source lamp 24 and the photoelectric transducer element 25 on which the light from the lamp 24 is incident.
  • the means comprising the segmental plate 23, lamp 24 and photoelectric transducer 25 functions such that it prevents theread-out means 20 from reading by mistake a recess formed in the master cylinder for gripping the master plate and other portions which are similar to the timing marks and data marks.
  • the segmental plate 23 rotates in synchronism with the master cylinder 11 and interrupts the light from the lamp 24 so that the light may be intermittently incident on the photoelectric element 25 to cause the latter to produce signal pulses for opening the gate circuit.
  • the timing marks and data marks can be read while the gate circuit remains open.
  • FIG. 2 shows an example of the master plate which is provided in one marginal portion thereof with a plurality of sets of timing marks, each set including ten marks bearing numerals to 9, and a plurality of data marks each provided for one set of timing marks.
  • the set of timing marks designated T represents the column of thousands, the set of timing marks designated T the column of hundreds, the set of timing marks designated T the column of tens, and the set of timing marks designated T the column of ones.
  • the data mark designated D is provided for the timing mark 1 in the set of timing marks T the data mark D for the timing mark 5 in the set of timing marks T the data mark D for the timing mark 2 in the set of timing marks T and the data mark D, for the a timing mark 0 in the set of timing marks T.,.
  • the number of copy sheets to be printed is indicated by the indication tube provided in the printing machine upon its being read by the read-out means 20.
  • the read-out means 20 comprises a photoelectric transducer element 22d for the data marks and a photoelectric transducer element 22! for the timing marks.
  • the segmental plate 23 closes the light receiv ing window for the photoelectric transducer element 25 to open the gate circuit. Thereafter, the reading of the timing marks and the data marks is initiated.
  • a recess 11b is formed in the master cylinder 11 for gripping the master plate as shown in FIG. 3. If light reflected by the recess 1 lb is incident on the photoelectric transducer elements 22t and 22d, the read-outs are not counted because the gate circuit is not opened yet.
  • the photoelectric transducer element 22d is for the data marks
  • the photoelectric transducer ele-' ment 25 for the rotary segmental plate 23.
  • the output of the element 25 is applied, through an amplifier 60 to the read-out gate circuit 62 as an input.
  • the outputs of the elements 22d and 22: are applied, through data mark read-out circuit 64 and timing mark read-out circuit 66, to AND circuits A and B.
  • the output of the gate circuit 62 is also applied to the AND circuits A and B.
  • the AND circuits A and B do not produce outputs. Accordingly, if the lightreceiving window of the element 25 is closed by the rotary segmental plate 23, the gate circuit is opened and produces an output signal which is applied to the AND circuits A and B as an input. Therefore, the signals from the mark read-out circuits 64 and 66 pass through the AND circuits and are counted by a data mark counter 68 and timing mark counter 70 respectively.
  • the data mark counter is provided with a column numeral control circuit 72, shown in FIG. 7, which automatically decides whether the numeral of the data 'mark read is of the column of thousands, hundreds,
  • the data mark counter also causes a memory circuit to store the information.
  • the column numeral control circuit 72 When the column numeral control circuit 72 has given a decision on the numeral of the last column and has caused the memory circuit to store the information, it produces a signal which closes the gate circuit so that unnecessary signals may not be stored thereafter.
  • the printing of one copy sheet after another by the printing machine is automatically started.
  • the follower arm 14, cam 15 and pivotal lever 16 are actuated to produce a pulse from generator 76 which is counted.
  • the numeral 1 is subtracted from the number stored in the memory counter circuit 80.
  • the memory counter circuit 80 produces an output signal which actuates a printing completion judging circuit 84 which applies a printing completion command signal to the paper feed device which automatically stops operating upon receipt of such signal.
  • the present invention offers many advantages.
  • the invention permits automatic setting of a predetermined number of copy sheets to be printed for each master plate positively and promptly by merely applying data marks on the respective numerals in a plurality of sets of timing marks.
  • the read-out means can be made to act continuously on different master plates automatically mounted on andreleased from the master cylinder, making it possible to continuously duplicate consecutive master plates one after another without interruption.
  • the provision of the rotary segmental plate and gate circuit for controlling the time at which the marks are read makes the read-out means operate positively and prevents false read-outs caused by light reflected by the recess in the master cylinder being incident on the photoelectric transducer elements.
  • the gate circuit eliminates the need for providing identification marks and a complex control circuit for detecting such identification marks.
  • the time at which the timing and data marks are read is controlled by signals produced in synchronism with the rotation of the master cylinder, so that the circuit used is simple in construction and positive read-outs can be made.
  • the use of the synchronous signal offers an additional advantage in that it can be used as a timing signal for initiation and termination of printing of each copy sheet during the printing operation and for checking up on the copy sheet feed operation of the copy sheet feed device after it has been used for reading the marks and storing the information in the memory circuit. This makes it possible to perform the automatic control of operation of a printing machine readily and positively.
  • the number of copy sheets to be printed is stored in the memory circuit before a printing operation is initiated, and the number of copy sheets printed in the printing operation is subtracted from the stored number each time a copy sheet is printed till'a predetermined number of copy sheets have been printed.
  • the rotary segmental plate has been described as being mounted on the master cylinder supporting shaft. It is to be understood however, that it may be mounted on any shaft which supports the blanket cylinder or impression cylinder or any other shaft which rotates in conjunction with such shafts.
  • the rotary plate need not be segmental in shape but may be in other convenient shape.
  • the gate circuit according to this invention has been described as being opened when the rotary plate interrupts the light from the light source and prevents it from being incident on the photoelectric transducer element. Alternatively, the gate circuit may be opened when the light from the light source is incident on the photoelectric transducer element, so long as the rotary plate rotating in synchronism with the master cylinder can open and close the gate circuit.
  • a read-out device for reading the number of copy sheets to be printed by an offset printing machine and for controlling the printing, including a master cylinder, a master plate having a plurality of sets of marks thereon to be read, each set representing a digital position for a number of copy sheets to be printed,
  • said marks provided on said master plate comprise a plurality of sets of timing marks and a plurality of data marks, and individual counter means for counting the timing marks and the data marks.
  • said marks comprise a plurality of sets of timing marks and a plurality of data marks, with one data mark per set of timing marks, each of said data marks pointing to an individual timing mark, said number of copy sheets to be printed being represented by the positions of the timing marks pointed to by data marks.
  • timing marks are read serially by mark and by set and including timing mark counting means for accumulating a count of timing marks of each set of time marks read by the read-out means, and means for transferring the instantaneous counts of the timing mark counting means to defined digit positions in the memory means upon the reading of data marks by the read-out means.
  • An offset printing machine having a device for controlling the number of copies printed during a printing cycle according to information provided by marks on a master plate carried by the printing machine master cylinder and including means for reading the master plate marks and for providing an output representing the number of copy sheets indicated by the master plate marks, memory means for storing the number of copy sheets represented by the reading means output, means for counting the number of copies printed during the printing cycle, and control means for generating a signal upon coincidence between the number stored in the storing means and the number of copies printed during the printing cycle as counted by the counting means, wherein the improvement comprises gate means (A,B) interposed between the reading means (22d, 22t, 64, 66) and the storing means (80), said gate means having a closed state and an open state and allowing connection between the output of the reading means and the memory means only during its open state, and means (11a, 23, 24, 25, 60, 62) for opening the gate means during a defined segment of the rotation of the master cylinder, said defined segment corresponding to alignment between the marks and the reading means,
  • said marks comprise timing marks and data marks and wherein said reading means comprises means for read ing timing marks and means for reading data marks, and including means for converting the output of the reading means to a decimal number.

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  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
US69567A 1969-09-09 1970-09-04 Printed copy sheet number read-out device Expired - Lifetime US3689742A (en)

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JP44071487A JPS5035446B1 (enrdf_load_html_response) 1969-09-09 1969-09-09

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US (1) US3689742A (enrdf_load_html_response)
JP (1) JPS5035446B1 (enrdf_load_html_response)
DE (1) DE2044663C3 (enrdf_load_html_response)
DK (1) DK133548B (enrdf_load_html_response)
GB (1) GB1318435A (enrdf_load_html_response)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941981A (en) * 1973-02-26 1976-03-02 Kabushiki Kaisha Ricoh Roll film mark counter
US4065661A (en) * 1975-04-26 1977-12-27 Eastman Kodak Company Photofinishing apparatus
US4123649A (en) * 1977-09-29 1978-10-31 Pako Corporation Print and order totalizer for automatic photographic paper cutter
US4183465A (en) * 1975-01-02 1980-01-15 Monarch Marking Systems, Inc. Record and printing member for making the record
US4213041A (en) * 1977-04-20 1980-07-15 Data Card (U.K.) Limited Master cards for hectographic printing

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5344550U (enrdf_load_html_response) * 1976-09-16 1978-04-17
DE10317187B4 (de) * 2002-05-31 2017-05-24 Heidelberger Druckmaschinen Ag Automatische Übermittlung von Daten von Druckvorstufe an Druckmaschine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3376549A (en) * 1961-06-15 1968-04-02 North American Rockwell Magnetic tape signal quantizer
US3562491A (en) * 1967-10-19 1971-02-09 Dick Co Ab Master controlled copy count method and apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3376549A (en) * 1961-06-15 1968-04-02 North American Rockwell Magnetic tape signal quantizer
US3562491A (en) * 1967-10-19 1971-02-09 Dick Co Ab Master controlled copy count method and apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941981A (en) * 1973-02-26 1976-03-02 Kabushiki Kaisha Ricoh Roll film mark counter
US4183465A (en) * 1975-01-02 1980-01-15 Monarch Marking Systems, Inc. Record and printing member for making the record
US4065661A (en) * 1975-04-26 1977-12-27 Eastman Kodak Company Photofinishing apparatus
US4213041A (en) * 1977-04-20 1980-07-15 Data Card (U.K.) Limited Master cards for hectographic printing
US4123649A (en) * 1977-09-29 1978-10-31 Pako Corporation Print and order totalizer for automatic photographic paper cutter

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Publication number Publication date
DK133548B (da) 1976-06-08
DK133548C (enrdf_load_html_response) 1976-10-25
GB1318435A (en) 1973-05-31
DE2044663A1 (de) 1971-04-15
JPS5035446B1 (enrdf_load_html_response) 1975-11-17
DE2044663C3 (de) 1979-02-01
DE2044663B2 (de) 1978-06-08

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