CA1097517A - Apparatus to control the ink supply on rotary printing presses - Google Patents
Apparatus to control the ink supply on rotary printing pressesInfo
- Publication number
- CA1097517A CA1097517A CA297,246A CA297246A CA1097517A CA 1097517 A CA1097517 A CA 1097517A CA 297246 A CA297246 A CA 297246A CA 1097517 A CA1097517 A CA 1097517A
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- CA
- Canada
- Prior art keywords
- ink
- adjusting
- zones
- display
- individual
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/0036—Devices for scanning or checking the printed matter for quality control
- B41F33/0045—Devices for scanning or checking the printed matter for quality control for automatically regulating the ink supply
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- Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Spectrometry And Color Measurement (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Road Signs Or Road Markings (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
A B S T R A C T
The specification describes an apparatus to control the ink supply on rotary printing presses. It consists of a test pinch with adjusting members in individual ink zones and with a device for adjusting the total ink quantity. Displaced were ink density deviations from desired values of a printed product indicate the direction of correction for the adjustment of the adjusting members and/or of the device for adjusting the total ink quantity and are associated with the ink zones associa-ted with the sheet according to scale.
The specification describes an apparatus to control the ink supply on rotary printing presses. It consists of a test pinch with adjusting members in individual ink zones and with a device for adjusting the total ink quantity. Displaced were ink density deviations from desired values of a printed product indicate the direction of correction for the adjustment of the adjusting members and/or of the device for adjusting the total ink quantity and are associated with the ink zones associa-ted with the sheet according to scale.
Description
~0'~5~
The invention relates to an apparatus for controlling the ink supply on rotary printing presses with a test bench, with adjusting members in individual ink zones and with a device for adjusting the total ink quantity.
The object of the invention is, within the context of progressive automation of the printing process, to simplify the control of the ink supply of a printing unit and to make it easier to supervise and more reliable in operation.
German Offenlegungsschrift 2 115 653 describes a method and an apparatus for the telecontrol of adjusting and driving members in printing presses, which make it possible to telecontrol the entire ink supply by modifying the sectional rotary movement of an ink doctor and the zonal ink supply by modifying the individual adjusting members of an ink knife either manually or from a central control point through the intermediary of electric stepping motors. The position of the adjusting members can be indicated visually by means of an impulse counter or of a coding wheel. The inclusion of such a control system of the adjusting members or stepping motors in closed control cir-cuits e.g., by automatic measurement of the actual in~ layer thickness on a printed image carrier and its comparison with a desired layer thickness for the purpose of an automatic initiation of the corresponding control lmpulses~ which is proposed in this specification, is extremely onerous by its construction and is uneconomic, e.g., for sheet-fed rotary printing presses, more particularly for those of small format, when considered from the standpoints of technical outlay and of production costs.
In the ink dosing method on a printing press disclosed in German Offenlegungsschrift 24 34 680, the individual ink zone adjusting members can be remotely adjusted during the printing 1(;1 ~7517 process on the basis of the visual assessment of an edition sheet on an observation table by the operator, by means of manually operable switches. In this case the positions of the individual adjusting members on the ink knife can be read off on a picture screen.
With both apparatuses, the adjustment of the indivi-dual adjusting member, e.g., those of the ink knife, is left exclusively to the sense and experience of the operator, both as regards the required direction of adjustment and of the magnitude of the adjustment value, because no concrete guide values as to magnitude and direction of adjustment are prescribed for him.
The adjustment of the adjusting members themselves which influence the ink supply can thus only be performed on the basis of rough visual estimation values. As a result of erroneous and mistaken assessment of the printed product by the operator, corresponding repeated recorrections of the adjusting elements influencing the ink supply to an ink ]ayer thickness profile which corresponds to an optimum ink density of a printed product, are unavoidable.
Starting from this prior art, it is the underlying aim of the invention to produce a low cost monitoring apparatus for controlling the ink supply on rotary printing presses, which in order to facilitate the operation, indicates to the operator at a central control point of the operating station the steps according to direction and position which are required for a rapid optimation of the ink supply during the printing process.
This aim isachieved according to the invention in that tendency displays for ink density deviations from desired values of a printed product, which indicate the direction of correction for the adjustment of the adjusting members and/or of the devices 3~ for adjusting the total ink quantity, are associated with the ink ~ ~75~'7 zones associated(laccording to scale with the sheet. sy such a display of the direction of adjustment of the ink quantity from ink density variations during the printing process,the operator is relieved of a possibly incorrect evaluation of the printed product and consequent uncorrected adjustment of the ink supply, and his work is thus considerably simplified Furthermore, the required make-ready times are considerably reduced by this arrangement.
In order to achieve an optimation of the ink supply in the shortest time in order to achieve a better quality of print, and thereby reduce wastage to a minimum, as an advanta-geous further development of the invention intensity displays of the ink density deviations are superimposed within the context of selective tolerances upon the tendency displays serving for the direction of correction, from which the operator can infer the value of the magnitude of the required modification.
An example of a method for telecontrolling the ink supply to inking units of rotary printing presses with an appara-tus according to the invention, is that the difference values between prescribed stored desired values of the ink density and the actual values of the ink density of a printed product detec-ted by means of an ink density measurement, which are obtained on the basis of an arithmetical comparative value formation, are rendered visible in a common display, taking selective tolerances into consideration, as a tendency display for the modification of the ink distribution of the zonal ink quantity and/or of the total ink quantity and are used as a value for the modification quan-tity. Such a method enables the operator to rely upon the fact that his intervention in the ink supply will be effective only in the correct ink zone, or superordinately in the required ~97S17 modification quantity across the total width of the ink supply.
The invention is described more fully hereinbelow with reference to a basic construction illustrated in the drawings, ar.d also of an extended exemplary embodiment.
In the drawing:
Fig. 1 shows a schematic plan of a basic construction of the control apparatus with test bench according to the inven-tion, and Fig. 2 shows a schematic plan of a preferred exemplary embodiment of the invention.
It should be explained initially that the illustration and description of the invention are limited solely to its most essential constituents, and means such as ink supply device, control, drive and adjustment means and their associations are assumed as known.
As shown in figure 1, a basic construction of the apparatus according to the invention substantially comprises three sections, a test bench 1 with an ink density measuring device 2, a display device 3 located at the top end of the test bench 1 or above the same, and an electronic evaluator device 4 arranged at the left-hand side of the test bench 1.
The test bench l can be mounted directly on a rotary printing press, and may also be arranged as a self-contained unit independently of the same. The test bench l is connected through the intermediary of control wires, in a manner not shown nor described in detail, to driving and adjusting members of the elements of an ink supply apparatus which determine both the zonal ink supply and also the total ink quantity. As ink supply 7~7 apparatus, an ink duct with doctor roller and continuous and also subdivided ink knife, an ink spray device or a centrifugal inking unit etc., may be provided. As adjusting members inter alia the stepping motors known from telecontrol devices may be adopted The test bench 1 is provided for the precisely fixed reception and for the measuring of a printed product 5 by means of the ink density meter 2. The ink density meter 2 is consti-tuted in this basic construction by an individual densitometer 6 which, considered transversely to the direction of travel of the printed product 5, is arranged slidably across the total width of the latter in a test beam 7. The test beam 7 itself is mounted directly above the test bench 1 slidably in the longitu-dinal direction of the printed product 5 on two lateral slide-ways 8, so that any desired part of the printed product 5 can bemeasured with the individual densitometer 6.
The electronic evaluator device 4 is connected by means of wires, not shown, to the densitometer 6 and to the display instrument 3 located at the top end of the test bench 1. It is also equipped with an operating keyboard 9 and with a numerical display 10.
The display instrument 3 located at the top end of the test bench 1 is equipped with any desired number of luminous dis-plays 11 across its total width in conformity with the selected division of its displayO The individual luminous displays 11 consist in each case of three light-emitting diodes (LED's) 12, 13, and 14 arranged mutually superposed. In the display instru-ment 3 illustrated in the basic construction of figure 1, a lumi-nous display 11 is associated with each of the ink adjustment 3~ zones 22 of the inking unit, not shown, so that in this case the 7Sl7 number of the ink adjustment zones 22 corresponds to the number of the zonal luminous displays 11.
The principle of operation with the invention is described more fully hereinbelow.
During the printing run, a printed product 5 is removed from the printing press and placed aligned on the test bench 1. Now, by means of the densitometer 6, and utilizing a print monitor strip 15 printed on the printed product 5, its ink density values are detected metrologically, compared in the elec-tronic evaluator device 4 with desired values previously fed into the latter, and the existing colour density deviations of the printed product 5 with reference to said prescribed desired values beyond the scope of permitted and preselected tolerances are made visible in the display instrument 3.
The zonal luminous display 11 of the display instrument 3 which is associated with each ink adjusting zone permits, by its three LED's 12 to 14 arranged mutually superposed, both a tendency display of the ink density deviations to be modified with reference to the direction of the ink supply of the zonal ink quantity and/or of the total ink quantity, and also super-ordinately thereto, in a number of multiple possible combinations, sorted into different preselective tolerance classes, an inten-sity display as a quantitative value for the necessary modifi-cation.
The tendency, whether more or less is to be supplied, is indicated by the lighting up of the top or bottom LED 12 or 14 of a zonal luminous display 11.
various possible combinations of tendency and intensity displays are now possible:
3u In a first combination stage~ only the central LED 12 of a zonal luminous display 11 lights up. This signifies that the measured actual value of the full tone ink density of the printed products 3 coincides with the prescribed desired value of the full tone ink density within the scope of a permitted and preselected tolerance. Since no ink density deviation exists, no tendency and also no intensity is displayed. In this case no intervention with the ink supply is required, In a second possible combination the central and the bottom LED's 13 and 14 of a zonal luminous display 11 light up simultaneously In this case the lighting up of the bottom LED
14 indicates the minus tendency of the deviation of the measured actual value of the full tone ink density with reference to the prescribed desired value of the full tone ink density. The simultaneous lighting up of the central LED additionally pro-vides an information as to the intensity of the existing inkdensity deviation. In such a case i.e., in the case of the simultaneous lighting up of the central and bottom LED's 13 and 14, a slight minus deviation of the measured actual value of the full tone ink density exists, but which exceeds a prescribed tolerance classe and ranges in the minus range up to a deviation of e.g., three tolerance classes with reference to the prescribed desired value of the full tone ink density.
In a third display possibility, the lighting up exclu-sively of the bottom LED 14 of a zonal luminous display 11 indi-cates a minus tendency, i.e., a minus deviation of the measuredactual value of the full tone ink density from a prescribed desired value of the full tone ink density, but which already exceeds the scope of e.gO, three prescribed tolerance classes.
In a fourth combination stage, the two upper LED's 12 and 13 of a zonal luminous display 11 light up simultaneouslyO
lQ~7517 The lighting up of the top LED 12 indicates a positive tendency, i.e., a plus deviation of the measured actual value of the full tone ink density with reference to the prescribed desired value of the full tone ink density. The simultaneous lighting up of the central LED 13 also indicates the intensity of the existing ink density deviation. This is greater than one prescribed tolerance class and lies e.g., in the range between one and three plus tolerance classes.
In a fifth stage of the possible combinations, in the case of a plus deviation of the measured actual value of the full tone ink density of e.g., more than three prescribed plus toler-ances, the top LED 12 of a zonal luminous display 11 lights up.
From this it is therefore possible to infer a positive tendency and great intensity of the ink density deviation.
A sixth luminous combination of a zonal luminous dis-play 11, in which all three LED's 12 to 14 light up simulta-neously, indicates a faulty measurement of the full tone ink density. The measured actual value of the full tone ink density of the printed product 5 is irregular and unsatisfactory e.g., due to a dirty measurement field, misprint, blotches, etc., i.e., the measurement must be checked.
When none of the three LED's 12 to 14 of a zonal luminous display 11 light up, no desired value is present.
On the basis of the tendency and intensity displays of the zonal luminous display 11, when unacceptable ink density deviations are present the zonal ink supply can be corrected by -;`
adjusting the ink zone adjusting members, not shown, whilst the tendency display serves as a guide for more or less ink supply and the intensity display superimposed thereon indicates the 3~
~ 7~i~7 quantitative value of the required variation.
If all the zonal luminous displays ll distributed across the entire width of the display instrument 3 simultaneously indicate too great or too low ink density, whilst the LED's lit up lie roughly on a level, then this can be effectively remedied in a particularly simple manner by a single modification of the total ink quantity superimposed upon the zonal ink supply.
The tendency display for the ink supply may also, within the ambit of the invention, occur in a different manner from that above described. It is thus entirely possible to indicate the tendency by correspondlng blinking of LED's or by brightness variations in the latter. Instead of this, an analog scale display or a digital display, e.g., in the form of a pulse counter to count adjustment steps or gear steps of the ink zone adjusting members, may of course likewise be provided.
Each of the prescribed and stored desired values of the full tone ink density, e.g., of a matching sheet, each of the measured actual values of the full tone ink density of the printed product 5, and each of the ink density deviations both in direction and also in magnitude detected by a desired actual value comparison in the electronic evaluator device 4, can addi-tionally be summoned by means of the operating keyboard 9 of the ëlectronic evaluator device 4 and rendered visible in its numeri-cal display lO.
A preferred embodiment of the invention extended with reference to the basic construction of figure l, is equipped, in addition to the three principal elements, the test bench l with the ink density measuring device 2, the display device 3 for displaying the ink density deviation tendency and the deviation 3J intensity and the electronic evaluator device 4, with an LED
display 19 at the bottom end of the test bench to display the ink layer thickness profile and with corresponding operating elements 20 located therebeneath for modifying the same, and also with a doctor telecontrol21 on the right-hand side of the test bench 1.
An ink density measuring device 2 substantially modified compared with that of the basic construction, is also adopted in this embodiment.
The LED display 19 with the display of the ink layer thickness profile extends across the total width of the test bench 1 and is subdivided into thirty-two ink adjustment zones 22 To display the positions of the individual zonal adjusting menbers, likewise thirty-two rows, each of sixteen LED's 23 arranged mutually superposed is provided, so that one vertical row of LED's is associated with each ink adjustment zone 22 to indicate the position of the adjustment member.
Beneath the LED display 19, in accordance with the ink adjustment zones 22, operating elements 20 to control the zonal ink quantity are provided. The operating elements 20 comprise thirty-two plus keys 24 to increase the zonal ink quantity, and thirty-two minus keys 25 to reduce the same.
Adjustment members for adjusting the zonal ink quantity are actuated by means of the operating elements 20 through the intermediary of control wires not shown or described in detail.
With each ink zone adjusting member there is associated, in manner known per se and therefore not illustrated, a potentio-meter for reverting back the position or for reverting back the position of the adjustment member to the display of the ink layer thickness profile of the LED display 19.
The doctor telecontrol 21 for modifying the total ink 3~ quantity is provided with a feed-in keyboard 26 and with a digital display 27. As already mentioned previously in connection with the ink zone teleadjustment, the ink stripe width on the ink doctor, not shown, can be increased or reduced by modi~ying its angle of rotation by means of a plus or minus key of the feed-in keyboard 26. The relative angle of rotation of the ink doctor, referred to its maximum stroke, can then be read off as a percentage in the digital display 27.
The test beam 7 of the ink density measuring device 2 is subdivided into thirty-one individual measurement zonesO Of these, sixteen measurement zones, arranged at respective mutual intervals, are provided as full tone measurement zones for the measurement of the full tone ink densities of the printed product 5, and the fifteen remaining spaces respectively located between said full tone measurement zones are reserved as screen tone measurement zones for the measurement of the screen tone ink densities of the printed product 5.
Accordingly, the test beam 7 of the preferred embodi-ment of figure 2 is equipped with sixteen full tone measurement heads 28 arranged stationary at mutual intervals for measuring the ink density values in the full tone of the printed product 5.
In order to measure the ink density values in screen tone, four so-called jumper measurement heads 29 are provided which can be inserted at will into the screen tone measurement zones located between the full tone measurement heads 28.
The measurement beam 7 is limitedly adjustable and correctable in the lateral direction, i.e., considered trans-versely to the direction of travel of the printed product 5, from a basic position 30 into three further test positions 31 to 33 for measuring the three basic colours cyanogen, magenta and yellow and also for the colour black, of a four-colour printing ~Q~
system. For this purpose it is provided with a rack 34 which is engaged by an adjusting pinion 35 which is fixed to a projection 36 arranged stationary on the slideway 8 of the test beam 7 and can be rotated through the intermediary of a handwheel 37.
Also present on the movable test beam 7 is a four-part colour index display 38 which co-operates with a colour marking 39 which is arranged on the projection 36. The colour index display 38 serves to adjust and monitor the basic position 30 and the various test positions 31 to 33 of the test beam 7 Also in this extended embodiment, the division of the display instrument 3 is modified so that a tendency and intensity display in the form of a zonal luminous display 11 is associated with each two ink adjustment zones 22. Said zonal tendency dis-play 11 is then located in coincidence with the full tone test heads 28 of the full tone test zones of the test beam 7.
The mode of operation with this embodiment o the invention is explained more fully hereinbelow.
By means of the test beam 7 with the full tone test heads 28 arranged at intervals and with the four jumper test heads 29 located between them, four measurements are performed consecutively, one for each colour of the four-colour printing process, whilst after each measurement a lateral transverse dis-placement of the test beam 7 is effected by rotating the hand-wheel 22. Which colour is being tested instantaneously can meanwhile be read off on the colour index display 38 arranged on the test beam in conjunction with the colour marking 39 of the projection 36.
At each measurement, therefore, sixteen test values fox the full tone ink densities of a printing ink are obtained from the sixteen full tone test heads 28, whilst there is one full tone ~ ~Q75~7 ink density measured value for each two of the thirty-two ink adjustment zones 26. Thus, after the test beam 7 has been dis-placed laterally (transversely) three times, sixteen full tone ink density measurement values of all the four printing inks are available.
With the four so-called jumper test heads 29, the values of the screen tone ink densities of the four printing colours are determined by measuring screen test fields of the printing monitoring strip 15, whereby additional information is obtained as to the increase in the print by sliding and/or doubling due to negative influences affecting the process, such as reeling errors.
The full tone measured values are stored in ink densi-ties in the evaluator device 4 and are automatically compared with the desired values of the ink density in the full tone of a printed sheet fed in at the start of the printing process, within the context of preselected tolerances The ink density devia-tions thereby detected are then,~as already explained in connec-tion with the mode of operation of the basic construction of the invention, rendered visible automatically and as a routine by means of the sixteen zonal luminous displays 11 of the display instrument 3 in the form of tendency and intensity displays.
Corresponding to the ink density deviations found, corrective interventions into the zonal ink supply may be performed by means of the operating elements 20, or in case of need the overall ink quantity can be correspondingly modified by means of the feed-in keyboard 26 of the doctor telecontrol 21.
It is self-evidant that the invention is naturally in no way restricted to the basic construction and special embodi-ments illustrated in figures 1 and 2 and explained in the 1~75~7 description, both of which are to be regarded solely as examplesand are not intended to limit the inventionO It is self-evident that other embodiments with numerous variations aseregards struc-tural details are conceivable, which lie within the ambit mapped out for the invention.
It is thus e,g., entirely possible to effect the display of the ink layer thickness profile of the LED display 19, and also the tendency and intensity display, by means of valves, liquid crystals, through scale displays with corresponding needles and through digital displays, to choose a different division of the display instrument 3 or of the LED display 19, and also of the test beam 7, or to provide different ink density measuring devices. The arrangement of a display instrument 3 with tendency and intensity displays of the ink density deviations for a plura- -~
lity of presses simultaneously also lies within the ambit set out for the invention.
.
~ - 14 -
The invention relates to an apparatus for controlling the ink supply on rotary printing presses with a test bench, with adjusting members in individual ink zones and with a device for adjusting the total ink quantity.
The object of the invention is, within the context of progressive automation of the printing process, to simplify the control of the ink supply of a printing unit and to make it easier to supervise and more reliable in operation.
German Offenlegungsschrift 2 115 653 describes a method and an apparatus for the telecontrol of adjusting and driving members in printing presses, which make it possible to telecontrol the entire ink supply by modifying the sectional rotary movement of an ink doctor and the zonal ink supply by modifying the individual adjusting members of an ink knife either manually or from a central control point through the intermediary of electric stepping motors. The position of the adjusting members can be indicated visually by means of an impulse counter or of a coding wheel. The inclusion of such a control system of the adjusting members or stepping motors in closed control cir-cuits e.g., by automatic measurement of the actual in~ layer thickness on a printed image carrier and its comparison with a desired layer thickness for the purpose of an automatic initiation of the corresponding control lmpulses~ which is proposed in this specification, is extremely onerous by its construction and is uneconomic, e.g., for sheet-fed rotary printing presses, more particularly for those of small format, when considered from the standpoints of technical outlay and of production costs.
In the ink dosing method on a printing press disclosed in German Offenlegungsschrift 24 34 680, the individual ink zone adjusting members can be remotely adjusted during the printing 1(;1 ~7517 process on the basis of the visual assessment of an edition sheet on an observation table by the operator, by means of manually operable switches. In this case the positions of the individual adjusting members on the ink knife can be read off on a picture screen.
With both apparatuses, the adjustment of the indivi-dual adjusting member, e.g., those of the ink knife, is left exclusively to the sense and experience of the operator, both as regards the required direction of adjustment and of the magnitude of the adjustment value, because no concrete guide values as to magnitude and direction of adjustment are prescribed for him.
The adjustment of the adjusting members themselves which influence the ink supply can thus only be performed on the basis of rough visual estimation values. As a result of erroneous and mistaken assessment of the printed product by the operator, corresponding repeated recorrections of the adjusting elements influencing the ink supply to an ink ]ayer thickness profile which corresponds to an optimum ink density of a printed product, are unavoidable.
Starting from this prior art, it is the underlying aim of the invention to produce a low cost monitoring apparatus for controlling the ink supply on rotary printing presses, which in order to facilitate the operation, indicates to the operator at a central control point of the operating station the steps according to direction and position which are required for a rapid optimation of the ink supply during the printing process.
This aim isachieved according to the invention in that tendency displays for ink density deviations from desired values of a printed product, which indicate the direction of correction for the adjustment of the adjusting members and/or of the devices 3~ for adjusting the total ink quantity, are associated with the ink ~ ~75~'7 zones associated(laccording to scale with the sheet. sy such a display of the direction of adjustment of the ink quantity from ink density variations during the printing process,the operator is relieved of a possibly incorrect evaluation of the printed product and consequent uncorrected adjustment of the ink supply, and his work is thus considerably simplified Furthermore, the required make-ready times are considerably reduced by this arrangement.
In order to achieve an optimation of the ink supply in the shortest time in order to achieve a better quality of print, and thereby reduce wastage to a minimum, as an advanta-geous further development of the invention intensity displays of the ink density deviations are superimposed within the context of selective tolerances upon the tendency displays serving for the direction of correction, from which the operator can infer the value of the magnitude of the required modification.
An example of a method for telecontrolling the ink supply to inking units of rotary printing presses with an appara-tus according to the invention, is that the difference values between prescribed stored desired values of the ink density and the actual values of the ink density of a printed product detec-ted by means of an ink density measurement, which are obtained on the basis of an arithmetical comparative value formation, are rendered visible in a common display, taking selective tolerances into consideration, as a tendency display for the modification of the ink distribution of the zonal ink quantity and/or of the total ink quantity and are used as a value for the modification quan-tity. Such a method enables the operator to rely upon the fact that his intervention in the ink supply will be effective only in the correct ink zone, or superordinately in the required ~97S17 modification quantity across the total width of the ink supply.
The invention is described more fully hereinbelow with reference to a basic construction illustrated in the drawings, ar.d also of an extended exemplary embodiment.
In the drawing:
Fig. 1 shows a schematic plan of a basic construction of the control apparatus with test bench according to the inven-tion, and Fig. 2 shows a schematic plan of a preferred exemplary embodiment of the invention.
It should be explained initially that the illustration and description of the invention are limited solely to its most essential constituents, and means such as ink supply device, control, drive and adjustment means and their associations are assumed as known.
As shown in figure 1, a basic construction of the apparatus according to the invention substantially comprises three sections, a test bench 1 with an ink density measuring device 2, a display device 3 located at the top end of the test bench 1 or above the same, and an electronic evaluator device 4 arranged at the left-hand side of the test bench 1.
The test bench l can be mounted directly on a rotary printing press, and may also be arranged as a self-contained unit independently of the same. The test bench l is connected through the intermediary of control wires, in a manner not shown nor described in detail, to driving and adjusting members of the elements of an ink supply apparatus which determine both the zonal ink supply and also the total ink quantity. As ink supply 7~7 apparatus, an ink duct with doctor roller and continuous and also subdivided ink knife, an ink spray device or a centrifugal inking unit etc., may be provided. As adjusting members inter alia the stepping motors known from telecontrol devices may be adopted The test bench 1 is provided for the precisely fixed reception and for the measuring of a printed product 5 by means of the ink density meter 2. The ink density meter 2 is consti-tuted in this basic construction by an individual densitometer 6 which, considered transversely to the direction of travel of the printed product 5, is arranged slidably across the total width of the latter in a test beam 7. The test beam 7 itself is mounted directly above the test bench 1 slidably in the longitu-dinal direction of the printed product 5 on two lateral slide-ways 8, so that any desired part of the printed product 5 can bemeasured with the individual densitometer 6.
The electronic evaluator device 4 is connected by means of wires, not shown, to the densitometer 6 and to the display instrument 3 located at the top end of the test bench 1. It is also equipped with an operating keyboard 9 and with a numerical display 10.
The display instrument 3 located at the top end of the test bench 1 is equipped with any desired number of luminous dis-plays 11 across its total width in conformity with the selected division of its displayO The individual luminous displays 11 consist in each case of three light-emitting diodes (LED's) 12, 13, and 14 arranged mutually superposed. In the display instru-ment 3 illustrated in the basic construction of figure 1, a lumi-nous display 11 is associated with each of the ink adjustment 3~ zones 22 of the inking unit, not shown, so that in this case the 7Sl7 number of the ink adjustment zones 22 corresponds to the number of the zonal luminous displays 11.
The principle of operation with the invention is described more fully hereinbelow.
During the printing run, a printed product 5 is removed from the printing press and placed aligned on the test bench 1. Now, by means of the densitometer 6, and utilizing a print monitor strip 15 printed on the printed product 5, its ink density values are detected metrologically, compared in the elec-tronic evaluator device 4 with desired values previously fed into the latter, and the existing colour density deviations of the printed product 5 with reference to said prescribed desired values beyond the scope of permitted and preselected tolerances are made visible in the display instrument 3.
The zonal luminous display 11 of the display instrument 3 which is associated with each ink adjusting zone permits, by its three LED's 12 to 14 arranged mutually superposed, both a tendency display of the ink density deviations to be modified with reference to the direction of the ink supply of the zonal ink quantity and/or of the total ink quantity, and also super-ordinately thereto, in a number of multiple possible combinations, sorted into different preselective tolerance classes, an inten-sity display as a quantitative value for the necessary modifi-cation.
The tendency, whether more or less is to be supplied, is indicated by the lighting up of the top or bottom LED 12 or 14 of a zonal luminous display 11.
various possible combinations of tendency and intensity displays are now possible:
3u In a first combination stage~ only the central LED 12 of a zonal luminous display 11 lights up. This signifies that the measured actual value of the full tone ink density of the printed products 3 coincides with the prescribed desired value of the full tone ink density within the scope of a permitted and preselected tolerance. Since no ink density deviation exists, no tendency and also no intensity is displayed. In this case no intervention with the ink supply is required, In a second possible combination the central and the bottom LED's 13 and 14 of a zonal luminous display 11 light up simultaneously In this case the lighting up of the bottom LED
14 indicates the minus tendency of the deviation of the measured actual value of the full tone ink density with reference to the prescribed desired value of the full tone ink density. The simultaneous lighting up of the central LED additionally pro-vides an information as to the intensity of the existing inkdensity deviation. In such a case i.e., in the case of the simultaneous lighting up of the central and bottom LED's 13 and 14, a slight minus deviation of the measured actual value of the full tone ink density exists, but which exceeds a prescribed tolerance classe and ranges in the minus range up to a deviation of e.g., three tolerance classes with reference to the prescribed desired value of the full tone ink density.
In a third display possibility, the lighting up exclu-sively of the bottom LED 14 of a zonal luminous display 11 indi-cates a minus tendency, i.e., a minus deviation of the measuredactual value of the full tone ink density from a prescribed desired value of the full tone ink density, but which already exceeds the scope of e.gO, three prescribed tolerance classes.
In a fourth combination stage, the two upper LED's 12 and 13 of a zonal luminous display 11 light up simultaneouslyO
lQ~7517 The lighting up of the top LED 12 indicates a positive tendency, i.e., a plus deviation of the measured actual value of the full tone ink density with reference to the prescribed desired value of the full tone ink density. The simultaneous lighting up of the central LED 13 also indicates the intensity of the existing ink density deviation. This is greater than one prescribed tolerance class and lies e.g., in the range between one and three plus tolerance classes.
In a fifth stage of the possible combinations, in the case of a plus deviation of the measured actual value of the full tone ink density of e.g., more than three prescribed plus toler-ances, the top LED 12 of a zonal luminous display 11 lights up.
From this it is therefore possible to infer a positive tendency and great intensity of the ink density deviation.
A sixth luminous combination of a zonal luminous dis-play 11, in which all three LED's 12 to 14 light up simulta-neously, indicates a faulty measurement of the full tone ink density. The measured actual value of the full tone ink density of the printed product 5 is irregular and unsatisfactory e.g., due to a dirty measurement field, misprint, blotches, etc., i.e., the measurement must be checked.
When none of the three LED's 12 to 14 of a zonal luminous display 11 light up, no desired value is present.
On the basis of the tendency and intensity displays of the zonal luminous display 11, when unacceptable ink density deviations are present the zonal ink supply can be corrected by -;`
adjusting the ink zone adjusting members, not shown, whilst the tendency display serves as a guide for more or less ink supply and the intensity display superimposed thereon indicates the 3~
~ 7~i~7 quantitative value of the required variation.
If all the zonal luminous displays ll distributed across the entire width of the display instrument 3 simultaneously indicate too great or too low ink density, whilst the LED's lit up lie roughly on a level, then this can be effectively remedied in a particularly simple manner by a single modification of the total ink quantity superimposed upon the zonal ink supply.
The tendency display for the ink supply may also, within the ambit of the invention, occur in a different manner from that above described. It is thus entirely possible to indicate the tendency by correspondlng blinking of LED's or by brightness variations in the latter. Instead of this, an analog scale display or a digital display, e.g., in the form of a pulse counter to count adjustment steps or gear steps of the ink zone adjusting members, may of course likewise be provided.
Each of the prescribed and stored desired values of the full tone ink density, e.g., of a matching sheet, each of the measured actual values of the full tone ink density of the printed product 5, and each of the ink density deviations both in direction and also in magnitude detected by a desired actual value comparison in the electronic evaluator device 4, can addi-tionally be summoned by means of the operating keyboard 9 of the ëlectronic evaluator device 4 and rendered visible in its numeri-cal display lO.
A preferred embodiment of the invention extended with reference to the basic construction of figure l, is equipped, in addition to the three principal elements, the test bench l with the ink density measuring device 2, the display device 3 for displaying the ink density deviation tendency and the deviation 3J intensity and the electronic evaluator device 4, with an LED
display 19 at the bottom end of the test bench to display the ink layer thickness profile and with corresponding operating elements 20 located therebeneath for modifying the same, and also with a doctor telecontrol21 on the right-hand side of the test bench 1.
An ink density measuring device 2 substantially modified compared with that of the basic construction, is also adopted in this embodiment.
The LED display 19 with the display of the ink layer thickness profile extends across the total width of the test bench 1 and is subdivided into thirty-two ink adjustment zones 22 To display the positions of the individual zonal adjusting menbers, likewise thirty-two rows, each of sixteen LED's 23 arranged mutually superposed is provided, so that one vertical row of LED's is associated with each ink adjustment zone 22 to indicate the position of the adjustment member.
Beneath the LED display 19, in accordance with the ink adjustment zones 22, operating elements 20 to control the zonal ink quantity are provided. The operating elements 20 comprise thirty-two plus keys 24 to increase the zonal ink quantity, and thirty-two minus keys 25 to reduce the same.
Adjustment members for adjusting the zonal ink quantity are actuated by means of the operating elements 20 through the intermediary of control wires not shown or described in detail.
With each ink zone adjusting member there is associated, in manner known per se and therefore not illustrated, a potentio-meter for reverting back the position or for reverting back the position of the adjustment member to the display of the ink layer thickness profile of the LED display 19.
The doctor telecontrol 21 for modifying the total ink 3~ quantity is provided with a feed-in keyboard 26 and with a digital display 27. As already mentioned previously in connection with the ink zone teleadjustment, the ink stripe width on the ink doctor, not shown, can be increased or reduced by modi~ying its angle of rotation by means of a plus or minus key of the feed-in keyboard 26. The relative angle of rotation of the ink doctor, referred to its maximum stroke, can then be read off as a percentage in the digital display 27.
The test beam 7 of the ink density measuring device 2 is subdivided into thirty-one individual measurement zonesO Of these, sixteen measurement zones, arranged at respective mutual intervals, are provided as full tone measurement zones for the measurement of the full tone ink densities of the printed product 5, and the fifteen remaining spaces respectively located between said full tone measurement zones are reserved as screen tone measurement zones for the measurement of the screen tone ink densities of the printed product 5.
Accordingly, the test beam 7 of the preferred embodi-ment of figure 2 is equipped with sixteen full tone measurement heads 28 arranged stationary at mutual intervals for measuring the ink density values in the full tone of the printed product 5.
In order to measure the ink density values in screen tone, four so-called jumper measurement heads 29 are provided which can be inserted at will into the screen tone measurement zones located between the full tone measurement heads 28.
The measurement beam 7 is limitedly adjustable and correctable in the lateral direction, i.e., considered trans-versely to the direction of travel of the printed product 5, from a basic position 30 into three further test positions 31 to 33 for measuring the three basic colours cyanogen, magenta and yellow and also for the colour black, of a four-colour printing ~Q~
system. For this purpose it is provided with a rack 34 which is engaged by an adjusting pinion 35 which is fixed to a projection 36 arranged stationary on the slideway 8 of the test beam 7 and can be rotated through the intermediary of a handwheel 37.
Also present on the movable test beam 7 is a four-part colour index display 38 which co-operates with a colour marking 39 which is arranged on the projection 36. The colour index display 38 serves to adjust and monitor the basic position 30 and the various test positions 31 to 33 of the test beam 7 Also in this extended embodiment, the division of the display instrument 3 is modified so that a tendency and intensity display in the form of a zonal luminous display 11 is associated with each two ink adjustment zones 22. Said zonal tendency dis-play 11 is then located in coincidence with the full tone test heads 28 of the full tone test zones of the test beam 7.
The mode of operation with this embodiment o the invention is explained more fully hereinbelow.
By means of the test beam 7 with the full tone test heads 28 arranged at intervals and with the four jumper test heads 29 located between them, four measurements are performed consecutively, one for each colour of the four-colour printing process, whilst after each measurement a lateral transverse dis-placement of the test beam 7 is effected by rotating the hand-wheel 22. Which colour is being tested instantaneously can meanwhile be read off on the colour index display 38 arranged on the test beam in conjunction with the colour marking 39 of the projection 36.
At each measurement, therefore, sixteen test values fox the full tone ink densities of a printing ink are obtained from the sixteen full tone test heads 28, whilst there is one full tone ~ ~Q75~7 ink density measured value for each two of the thirty-two ink adjustment zones 26. Thus, after the test beam 7 has been dis-placed laterally (transversely) three times, sixteen full tone ink density measurement values of all the four printing inks are available.
With the four so-called jumper test heads 29, the values of the screen tone ink densities of the four printing colours are determined by measuring screen test fields of the printing monitoring strip 15, whereby additional information is obtained as to the increase in the print by sliding and/or doubling due to negative influences affecting the process, such as reeling errors.
The full tone measured values are stored in ink densi-ties in the evaluator device 4 and are automatically compared with the desired values of the ink density in the full tone of a printed sheet fed in at the start of the printing process, within the context of preselected tolerances The ink density devia-tions thereby detected are then,~as already explained in connec-tion with the mode of operation of the basic construction of the invention, rendered visible automatically and as a routine by means of the sixteen zonal luminous displays 11 of the display instrument 3 in the form of tendency and intensity displays.
Corresponding to the ink density deviations found, corrective interventions into the zonal ink supply may be performed by means of the operating elements 20, or in case of need the overall ink quantity can be correspondingly modified by means of the feed-in keyboard 26 of the doctor telecontrol 21.
It is self-evidant that the invention is naturally in no way restricted to the basic construction and special embodi-ments illustrated in figures 1 and 2 and explained in the 1~75~7 description, both of which are to be regarded solely as examplesand are not intended to limit the inventionO It is self-evident that other embodiments with numerous variations aseregards struc-tural details are conceivable, which lie within the ambit mapped out for the invention.
It is thus e,g., entirely possible to effect the display of the ink layer thickness profile of the LED display 19, and also the tendency and intensity display, by means of valves, liquid crystals, through scale displays with corresponding needles and through digital displays, to choose a different division of the display instrument 3 or of the LED display 19, and also of the test beam 7, or to provide different ink density measuring devices. The arrangement of a display instrument 3 with tendency and intensity displays of the ink density deviations for a plura- -~
lity of presses simultaneously also lies within the ambit set out for the invention.
.
~ - 14 -
Claims (10)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A device for evaluating and adjusting the ink supply in an offset sheet printing machine having adjusting elements in individual ink zones and an adjusting means for the total ink supply comprising an inspection station in the form of a measuring table upon which a printed product is placed for evaluation, a superimposed measuring means located above said table, said measuring means determining the actual values of ink density in a number of individual ink zones of such printed product, essentially simultaneously, an evaluating means associated with said measuring means for comparing the actual and rated values of ink density in the ink zone and an indicating means for presenting deviations from the rated values of ink density having both sign and magitude components whereby the ink supply may be adjusted according to the in-dicating means to assist in the optimization of ink density.
2. A device as claimed in Claim 1 wherein said indicating means includes a deviation profile over the entire width of such printed product for indicating the correcting direction for adjusting the adjusting elements of individual ink zones and for direction in adjusting the total amount of ink supplied to the printing machine.
3. A device as claimed in Claim 2, characterized in that superimposed upon the deviation profile is an additional indication of the intensity of the deviations within the scope of preselectable tolerances of said indicating means for indicating the magnitude of the adjustment for each individual ink zone.
4. Apparatus according to Claim 1 characterised in that said indicating means includes a common display device extending across the total width of the printed product for visual tendency and intensity display of the ink density deviations.
5. Apparatus according to Claims 1 to 3, characterised in that said indicating means is equipped with luminous displays.
6. Apparatus according to Claims 1 to 3, characterised in that said indicating means includes a plurality of rows of light-emitting diodes for luminous display.
7. Apparatus according to Claims 1 to 3 characterised in that a tendency and intensity is associated with each ink adjustment zone.
8. Apparatus according to Claims 1 to 3 characterised in that a tendency and intensity display is associated with each two ink adjustment zones.
9. Apparatus according to Claims 1 to 3, characterised in that both the adjusting elements of individual ink zones and the adjusting means for the total ink supply are telecontrollable and provided with a revertive communica-tion device and with a digital display.
10. A method of evaluating and adjusting the ink supply in an offset sheet printing machine having adjust-ing elements in individual ink zones and adjusting means for the total ink supply comprising measuring ink density in individual ink zones in a printed product produced by such printing machine, electronically comparing the measured ink density values with predetermined rated values to determine the sign and value of the deviation, displaying the deviations from the rated value in individual ink zones associated with individual adjusting elements of the ink zones to provide a deviation profile over the width of the printed product, and adjusting the individual adjusting elements in accordance with said deviations.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP2727426.6 | 1977-06-16 | ||
| DE2727426A DE2727426B2 (en) | 1977-06-18 | 1977-06-18 | Device for controlling the ink supply of a sheet-fed offset printing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1097517A true CA1097517A (en) | 1981-03-17 |
Family
ID=6011753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA297,246A Expired CA1097517A (en) | 1977-06-16 | 1978-02-17 | Apparatus to control the ink supply on rotary printing presses |
Country Status (18)
| Country | Link |
|---|---|
| JP (1) | JPS581678B2 (en) |
| AT (1) | AT378509B (en) |
| AU (1) | AU514735B2 (en) |
| BE (1) | BE868221A (en) |
| BR (1) | BR7803672A (en) |
| CA (1) | CA1097517A (en) |
| CH (1) | CH626831A5 (en) |
| DE (1) | DE2727426B2 (en) |
| DK (1) | DK151131C (en) |
| FR (1) | FR2394398A1 (en) |
| GB (1) | GB1569961A (en) |
| HK (1) | HK63980A (en) |
| IT (1) | IT1159722B (en) |
| MX (1) | MX147006A (en) |
| NL (1) | NL173836C (en) |
| NO (1) | NO150108C (en) |
| SE (1) | SE433473B (en) |
| ZA (1) | ZA78432B (en) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2830085C3 (en) * | 1978-07-08 | 1986-07-10 | Heidelberger Druckmaschinen Ag, 6900 Heidelberg | Method and device for displaying manipulated variables |
| JPS5845527A (en) * | 1981-09-12 | 1983-03-16 | 「寿」精版印刷株式会社 | Method and device for measuring density of ink of printed matter |
| JPS5845956A (en) * | 1981-09-12 | 1983-03-17 | Komori Printing Mach Co Ltd | Control base for printing machine |
| JPS5839865U (en) * | 1981-09-12 | 1983-03-16 | 小森印刷機械株式会社 | printing press control stand |
| DE3147312A1 (en) * | 1981-11-28 | 1983-06-09 | Heidelberger Druckmaschinen Ag, 6900 Heidelberg | ADJUSTMENT DEVICE FOR A PRINTING MACHINE |
| DE3220360A1 (en) * | 1982-05-29 | 1983-12-01 | Heidelberger Druckmaschinen Ag, 6900 Heidelberg | DEVICE FOR INFLUENCING COLORING ON PRINTING MACHINES |
| DE3220803C2 (en) * | 1982-06-03 | 1994-03-10 | Heidelberger Druckmasch Ag | Color density measuring system for determining the color density values of printed products |
| DD212697A1 (en) * | 1982-10-26 | 1984-08-22 | Druckmaschinenwerk Planeta Rad | DISPLAY DEVICE FOR COLOR CONTROL SYSTEMS |
| US4607571A (en) * | 1982-12-21 | 1986-08-26 | Dai Nippon Insatsu Kabushiki Kaisha | Method for adjusting an ink fountain in a printing press and ink fountains |
| EP0115546B1 (en) * | 1983-01-26 | 1991-09-25 | Ibm Deutschland Gmbh | Automatic print quality assessment and adjustment of a printer |
| DE3468367D1 (en) * | 1983-11-04 | 1988-02-11 | Gretag Ag | Method and device for judging the printing quality of a printed object, preferably printed by an offset printing machine, and offset printing machine provided with such a device |
| JPH0721314Y2 (en) * | 1985-03-22 | 1995-05-17 | 凸版印刷株式会社 | Flatbed proof press |
| GB2217653B (en) * | 1988-04-26 | 1992-10-14 | Allen Bradley Int | Control apparatus |
| CH677211A5 (en) * | 1988-05-31 | 1991-04-30 | Bobst Sa | |
| DE3826385A1 (en) * | 1988-08-03 | 1990-02-08 | Roland Man Druckmasch | DEVICE FOR EVALUATING PRINT ORIGINALS |
| DE3829341A1 (en) * | 1988-08-30 | 1990-03-08 | Roland Man Druckmasch | DATA COLLECTION FOR COLOR CONTROL SYSTEMS |
| DE4413230C2 (en) * | 1994-04-15 | 2003-11-20 | Heidelberger Druckmasch Ag | Device for checking an ink guide in an offset rotary printing machine by adjusting zonally divided ink metering elements from a control panel |
| US6748860B2 (en) | 1994-04-15 | 2004-06-15 | Heidelberger Druckmaschinen Ag | Operating panel for a printing machine, inking control system for a printing machine, and inking control method |
| US5832830A (en) * | 1995-01-10 | 1998-11-10 | Heidelberger Druckmaschinen Ag | Method and apparatus for normalizing the display of ink key zero points in an ink fountain |
| IL113336A (en) * | 1995-04-11 | 1999-10-28 | Scitex Corp Ltd | Method of aiding a printing press operator |
| JP2001080050A (en) | 1999-09-16 | 2001-03-27 | Komori Corp | Sheet rotary press |
| DE10120487A1 (en) * | 2001-04-25 | 2002-11-07 | Bdt Bavaria Digital Tech Gmbh | Control device for multi-color printing machines |
| JP2008037046A (en) * | 2006-08-09 | 2008-02-21 | Mitsubishi Heavy Ind Ltd | Operation desk of printer |
| JP6596396B2 (en) | 2016-08-09 | 2019-10-23 | 東芝メモリ株式会社 | Substrate cleaning method and cleaning apparatus |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1131427B (en) * | 1955-03-18 | 1962-06-14 | J F Crosfield Ltd | Device for displaying the color deviations from set color values in single or multi-color printing |
| US2902927A (en) * | 1957-05-01 | 1959-09-08 | Nevel E Ross | Adjustment control for ink fountain for offset and type presses |
| DE2023467A1 (en) * | 1970-05-13 | 1971-11-25 | Forschungsges F Druck U Reprod | Device for measuring the color density |
| DE2060000A1 (en) * | 1970-12-05 | 1972-06-15 | Hell Rudolf Dr Ing Gmbh | Method and arrangement for regulating the coloring during printing |
| DE2203145A1 (en) * | 1971-01-26 | 1972-08-10 | Allmaenna Svenska Elek Ska Ab | Arrangement for keeping constant the degree of coloration or the blackening of a printed product in a printing press |
| JPS4838361A (en) * | 1971-09-16 | 1973-06-06 | ||
| CH538680A (en) * | 1971-11-03 | 1973-06-30 | Gretag Ag | Method and device for the automatic measurement of the color density of printing inks applied to a moving web, in particular in multi-color gravure printing |
| JPS498312A (en) * | 1972-05-13 | 1974-01-24 | ||
| DE2238007A1 (en) * | 1972-07-28 | 1973-12-06 | Ems Elektronik Messtechn | DEVICE FOR CONTROLLING THE CONSTANCE OF COLORING OF PRINT SHEETS |
| US3835777A (en) * | 1973-01-16 | 1974-09-17 | Harris Intertype Corp | Ink density control system |
| CA997959A (en) * | 1973-07-23 | 1976-10-05 | Harris Corporation | Ink key control system |
| US4008664A (en) * | 1973-07-23 | 1977-02-22 | Harris-Intertype Corporation | Ink key control system |
| US3930447A (en) * | 1974-07-22 | 1976-01-06 | Harris Corporation | Dual purpose display for printing presses |
| US3995958A (en) * | 1975-07-21 | 1976-12-07 | Hallmark Cards, Incorporated | Automatic densitometer and method of color control in multi-color printing |
-
1977
- 1977-06-18 DE DE2727426A patent/DE2727426B2/en not_active Ceased
-
1978
- 1978-01-24 ZA ZA00780432A patent/ZA78432B/en unknown
- 1978-01-27 CH CH94578A patent/CH626831A5/en not_active IP Right Cessation
- 1978-02-02 AU AU32926/78A patent/AU514735B2/en not_active Expired
- 1978-02-06 GB GB4679/78A patent/GB1569961A/en not_active Expired
- 1978-02-09 AT AT0092078A patent/AT378509B/en not_active IP Right Cessation
- 1978-02-17 CA CA297,246A patent/CA1097517A/en not_active Expired
- 1978-05-19 SE SE7805771A patent/SE433473B/en unknown
- 1978-06-08 BR BR7803672A patent/BR7803672A/en unknown
- 1978-06-13 IT IT68374/78A patent/IT1159722B/en active
- 1978-06-16 NO NO782096A patent/NO150108C/en unknown
- 1978-06-16 MX MX173831A patent/MX147006A/en unknown
- 1978-06-16 DK DK273078A patent/DK151131C/en not_active IP Right Cessation
- 1978-06-16 NL NLAANVRAGE7806524,A patent/NL173836C/en not_active IP Right Cessation
- 1978-06-16 BE BE188657A patent/BE868221A/en not_active IP Right Cessation
- 1978-06-16 FR FR7818082A patent/FR2394398A1/en active Granted
- 1978-06-19 JP JP53074067A patent/JPS581678B2/en not_active Expired
-
1980
- 1980-11-13 HK HK639/80A patent/HK63980A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ZA78432B (en) | 1979-01-31 |
| IT1159722B (en) | 1987-03-04 |
| NL7806524A (en) | 1978-12-20 |
| JPS581678B2 (en) | 1983-01-12 |
| DK151131C (en) | 1988-04-11 |
| SE7805771L (en) | 1978-12-19 |
| FR2394398B1 (en) | 1984-06-29 |
| NO782096L (en) | 1978-12-19 |
| DE2727426B2 (en) | 1981-04-30 |
| JPS548009A (en) | 1979-01-22 |
| AU514735B2 (en) | 1981-02-26 |
| MX147006A (en) | 1982-09-22 |
| AU3292678A (en) | 1979-08-09 |
| DK273078A (en) | 1978-12-19 |
| IT7868374A0 (en) | 1978-06-13 |
| BE868221A (en) | 1978-10-16 |
| NL173836C (en) | 1984-03-16 |
| HK63980A (en) | 1980-11-21 |
| DE2727426A1 (en) | 1978-12-21 |
| DK151131B (en) | 1987-11-09 |
| ATA92078A (en) | 1985-01-15 |
| BR7803672A (en) | 1979-01-09 |
| NL173836B (en) | 1983-10-17 |
| CH626831A5 (en) | 1981-12-15 |
| AT378509B (en) | 1985-08-26 |
| FR2394398A1 (en) | 1979-01-12 |
| SE433473B (en) | 1984-05-28 |
| NO150108B (en) | 1984-05-14 |
| NO150108C (en) | 1984-08-22 |
| GB1569961A (en) | 1980-06-25 |
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| MKEX | Expiry |