DD225088A3 - METHOD FOR CONTROLLING THE MANUFACTURING PROCESS OF BANDFOORG PHOTOGRAPHIC LAYER AND MATERIALS - Google Patents

Abstract

PUBLISHED WITHOUT EXECUTIVE SUMMARY.

Description

i / o

Berlin, 16.12.1974-Wolf / Gö.

Method for controlling the production process of ribbon-shaped photographic supports and materials

The invention provides a process for complexing control of the production of belt-shaped photographic supports using materials, in particular for the complex control of the production of photosensitive image-bearing materials on a film or paper base.

The production of photosensitive imaging materials is other than the production of the film base material.

foil or paper backing as a carrier material for the photosensitive 'emulsion layer' to be applied is bound to almost complete exclusion of light. From this, it is inevitable that observations, measurements and controls of the individual stages of the production process take place under particularly difficult conditions. The essential point is that despite these difficult conditions, the given photographic parameters; des.Endproduktes are to be followed exactly.

It has been known, for a long time, by the photographic film-producing industry, to observe and measure the production of the photographic light-sensitive material by suitable methods and apparatus in order subsequently to control the steps of the manufacturing process by means of the information obtained. Thus, for example, a device for regulating the creepage of film and paper webs is known by arranging a jet nozzle on one edge of the web, the course of the web being interrupted when the jet is interrupted the one side and a passing beam to the other side via a Hegulierungseinrichtung .hin is directed. The jet used is formed by a nozzle and can be made of both compressed air and liquid.

Furthermore, methods are known for controlling the passage of webs from a roll, which stop via associated devices in a web break the further course of the web from the roll.

Disadvantages of the described methods, including the associated devices, are that with their help only very specific sub-stages are measured and controlled, which regulate essentially mechanical movement sequences.

It has already been proposed, the. to determine the photosensitive emulsion layer applied to the photographic support by measurements of the absorption of the infrared radiation or nuclear radiation. In particular, it is known that <Zdd> is the silcer surface density a few meters after the application of the emulsion by exciting the silver to the fluorescent fluorescence emission. and detecting by scintillation detector. Will then these measurements of silver surface density, milled water

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supplied to a processor, this is according to his instructions. Program the required for the further Begieiprczeß values such. 3. Zimulsionsanlauf'in the pouring bucket, web speed, solids content of the emulsion and enters them into a memory and it can thus also equilibrium control of Be

Casting process done. In addition, a fault log is printed out. After the completion of a given .measure unit of the photographic material, the values entered into the memory can then be retrieved for the purpose of checking and evaluating for the subsequent production process.

Substantive, however, is that these values obtained with the aid of the method are evaluated at a later point in time, whereby an accurate local determination of the measurements and initiated control operations can not take place, since the storage of the characteristic data by the process computer takes place separately from the photographic material. Furthermore, parameters obtained with this method can only be used after the process computer has been reprogrammed for the subsequent re-casting process of the photographic material. Likewise, the values thus obtained can only be used to a limited extent for subsequent processing

Furthermore, it is known that in the. uJextiiincustrie Aufc ρ ή η Vt vV] -> - / ·>-; σ * πτ * · -> -y ρ tv ί ^ ς .λ λ α? *: • 'i γ "ρ *" · α ρ ι - ο' ~? o '- ** ^ pr ^ c; rr · ^ οτ "" ΐ q r *? ~> £ i r _t

Pre-coded material can be used to control processing operations on fabric webs.

Attachment takes place in such a way that at the Her

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serve nungssysteni or already contain the ferromagnetic recording systems.

It is also known that. the signal carrier material can be glued, pressed, sprayed or printed. However, in order to be able to find them again in the course of the individual editing or processing operations, this recording medium must be colored according to a special code.

be gekiert. A disadvantage of the aforementioned method is that with this only the pressure repeat can be controlled, which under pressure repeat the repetition of a particular print pattern is to be understood, which allows only a rough resolution. Furthermore, it is disadvantageous that the use of multiple warp threads as a co-thread means that it is necessary to have multiple heads on both sides of the fabric web. A significant disadvantage is that due to the inevitably occurring in the loading and Yerarbeitungsprcaessen the fabric webs strong changes in the mechanical and physical variables, especially length change en, / is only relatively in the right place. With the help of this technical bite, it is not possible in the photochemical industry to control 3e and processing operations in the production process of photographic recording materials. Besondererη special salmon part is that the 'known Ter-

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The textile industry can only be used in the light mode under normal conditions of exposure: while in the photographic film industry. Industry with its Dunkelbe operation / 'made special demands on the coded information carrier. '. '. ,

As is known, band-shaped photographic materials require the assignment of stoichnesses in the 1/10-millimeter range. However, this can be achieved with "the known methods, since the Happorttoleranzen are in the decimeter range, it has been previously thought impossible, the ^-; 'not-.Textilindustrie.''Known processes, especially those of Te. Ctil--' Industry to take control of the manufacturing process of photographic materials.

The purpose of the invention is to find a method which allows to carry out the entire process, including the assembly. to continuously measure and control the production of liquid photographic materials in order to rationalize the production process.

The object of the invention is; it to find a method

to obtain spatially associated state information in the decoration of photographic belt-shaped substrates and photosensitive photographic materials by capturing and interrogating measured and predetermined information while avoiding known and novel elements in the manufacturing process of the material, thereby permitting single and complex operations throughout control, so that predetermined parameters can be met.

The task includes that the storage and "detection with the least mechanical impact on the photograph scn.

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The task is solved by placing on an information carrier, which on the band-shaped photographic

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 receives and that during further passage through measuring, value-acquiring devices scanning both the given information and the additional

:: takes place, the

information / used as a combination to control the ongoing and / or subsequent work processes.

On the photographic support, an information carrier or mark is applied as an indicator in its manufacture or at a later time at any point, preferably on the tapes, which by means of Meßwerterfassungseinrichtungen preferably ".. non-contact · scan for controlling the subsequent respective Depending on the information carrier used, electrical, optical and pneumatic sensors are used as measured value acquisition devices, the output signals of which are converted into electrical, pneumatic or hydraulic signals depending on the required signal processing: shortly before coating, preferably shortly after the production of the photographic substrate , an information carrier made of a suitable material, for example a metal thread, is applied to one edge or to both of the sanders, which may be designed in a segment-like or endless manner.

Ss "is also possible to use, instead of a metal thread! Foil strips of different dimensions. Also, information carrier of a continuous or in segments applied magnetic audio tape have proven in 5 ¹ OrHL. When using foil strips this coding in the form of perforations or markings with reflective is, The photographic support itself can serve as an infraciratory support by irreversible changes, whereby the changes required to absorb the information content can be made, for example, by laser beam, microwaves or spark erosion. it is particularly important that the information carriers used are photochemically inactive relative to the photographic light-sensitive material during further processing and thus do not lead to impairment of the material.

in he he Ausoixaung the _rxir.aung wo.ru ο e HersTS hurry of the band-shaped layer carrier s, ins. special only on one hand, a Magnettonträger applied in endless length. This information carrier is previously all the information for controlling the production of the photographic light-sensitive material

given up. On the 'carrier are the information for' the. respective control processes in certain information channels suitably coded before. In the further production process of the photographic material, can. the Magnetaufträger - additional information required to control the further technological process to be given. The decrease of the information ¹ "from the magnetic recording medium is carried out in a conventional manner with suitable for this purpose, -. Standard devices These devices can perform the information-for example einem.Prozeßrechner, the further 'control is performed from which.

In other cases, the information is taken off and evaluated analogously with commercially available devices which deliver the information they have prepared as a control signal directly to the control of the further technological process.

By way of example, the control of the hydraulic, settling and adjusting device for the tempered trough of the coating medium takes place at the coating station; when passing a splice of the tape-shaped photographic support,: In addition, the coated photographic material is passed shortly before the coating of an error analyzer. If coating defects have occurred

information is additionally given up on the information carrier. During the winding of the photographic belt-shaped material, the magnetic information carrier can be separated from it. The magnetic information carrier contains a complete history of the previous manufacturing process, including information about the properties of the produced tape-shaped photographic material. The available information is used to organize the subsequent refurbishment process. The separated or the magnetic information carrier remaining on the band-shaped material further serves to control cutting machines for the associated part of the coated photographic material. Material. This makes it possible already during the cutting process a selection in conjunction with; an immediate technical-technological evaluation ν ο r 2 houses.

In a further embodiment of the invention, a marking is applied during the production process of the band-shaped photographic layer carrier at specific, intervals fixed intervals. On the other hand, it is also possible, in Xennunis, for the 3-coat surface density, which is determined with commercially available devices, the applied volumes of the

To determine coating medium.

With knowledge of the specified parameters, it is possible to make corrections of the VoIu- 'menströme the Beschichrangsmediums by appropriate equipment and thus to control the BeschichtungsprοζeB.

By volume flow is meant the volume of coating medium per unit of time stated at the coating station. ^: -.

Ss' is possible that determined after each technological step using Fehleranalysatoren materials, errors on the above information ^carriers: to save, especially when using magnetic recording and at any Seitpunkt, preferential ·, after completion of the coating process, by means of appropriate technical facilities to evaluate and -einenl · Pehlerprotokoll compile, as well as in a classifying and sorting a Aassortierung make. , ~

It appears particularly expedient, instead of using various types of marking and systems, to use the magnetic recording medium both for individual technological stages and for the overall process of producing the photosensitive photographic material.

It is the first time with the process according to the invention

It is possible to partially and fully automate the production of the photographic material. This offers further advantages:

- improving the quality of the photographic material,

- a decisive improvement in compliance with the technical and technological parameters for the 'production' of the photographic material,

- Increasing the production yield by lowering the subjectively influenced errors,

- Reduction of heavy manual work, especially when working in the Bunke!

- simplification of the settlement procedure,

- Conducting correlation analyzes between 5 "'learning and technological' editing conditions of the photographic light-sensitive material.

173 9 23

The invention will be explained in more detail below on some embodiments. In the accompanying drawings, show :. . '*. ·

Pig · 1, an endless indicator with endless carrier material,

Tig · 2 - a segment-type indicator with support

.. material,. ·

Fig. 3 is a photographic support with segment-like indicator and segment-like. Carrier material,.

Pig * 4 signal flow diagram for the separating and gluing process,; - length measurement and coating surface density meter,

5 block flow diagram of the technological process,

FIg, δ Block diagram of the information acquisition from the magnetic blank.

Example 1 . ^: .

When the indicator 2 passes through the contactless switch used as a sensor <4 '', the control signal is obtained in the form of a current or voltage change and in the downstream trigger 5 . in. an electrical O / L-Binneit; ösignal formed with the desired level. The output signal

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the trigger serves as a control signal for technologically conditioned web separation and gluing processes in such a manner that the trigger output signal is stored in the memory device 6 and the output signal thereof, possibly amplified in a power amplifier 7, is actuated by the contactor 8 ". The contactor controls the electric actuator drive a clamping device 10. By means of the button 9, the manual operation of the clamping device is possible. The Sndkontakt 11 on the clamping device is in.Klemmstellung the bar a signal which is summed in the AND gate 12 with the output signal of the memory 6. The output of the gate 12, possibly amplified by the amplifier 13, controls the contactor 14, which in turn controls the solenoid valve 15, which then further controls the vacuum for the picking device with which the web to be adhered is gripped and held at its beginning. When the vacuum is built up, that is, the gripping device has reached the beginning of the newly adhered web, the vacuum guard 16, 17 (vacuum switch with switching contact) enters. Signal applied to the gate 18 When the AND gate receives the signal of the vacuum monitor and the control signal of the solenoid valve, it turns on the gate and drives the motor contactor 19 of the separator and / or adder 20. The Sndiagenschalter 21 gives way

completed operation a * signal to the memory 6, which is thereby deleted. · _

Example 2

Upon passage of the indicator, which marks the end of a given length, of the ribbon-shaped photographic base, by the non-contact switch used as the sensor 4, the control signal is obtained in accordance with a voltage change and in the downstream trigger with 5 ic eic- electrical O / L unit signal shaped desired level. The output signal of the trigger is fed to a buffer amplifier, 24- .. The output signal of the buffer amplifier is switched to the Eückstelleingang a the current length of the belt-shaped photographic support count counter 25, which is thus returned to Hull at the end of a predetermined length of the band-shaped photographic support.

Example 3: -...

If a marking, which marks the end of a given length of the band-shaped photographic support, a measured value acquisition device in the form of a contactless switch 4, the control signal is obtained in the form of a current change and in the downstream trigger 5 in an electrical O / L standard signal

converted to desired level. The output of the trigger is supplied to a buffer amplifier 22. The output of the buffer amplifier is fed to a particular input of a coating area density measuring device 23, which indicates in the measurement protocol it issues the end of the predetermined length cut of the belt-shaped photographic substrate by red printing and date printing.

Thus, the measurement protocols are unambiguously assigned to the corresponding length '.abseηη itteη the, bandf örmig e η.fοtο gr af i see layer carrier.

Example 4

After being manufactured, a magnetic tape is applied to a photographic support on one side. This magnetic tape will be in further technological process, d. H. after each technological sub-step through the error analyzer according to Pig. 5 detected errors as information on separately provided audio frequency channels.

After all, all the technological sub-stages, i. after completion of the coating, all information stored on these audio frequency channels are removed and fed to an evaluation unit

 The evaluation of the. on the sound carrier .2. stored information

Formationen erfρIgt after: .dem in the remote control and! telecommunications technology known method (Fig. 6). By means of the sound head 26, the entirety of the signals stored on the sound carrier 2 is removed therefrom, amplified in the amplifier 27 and fed to the selective channel filter 28 '. This channel filter 28 separates the individual audio frequencies from one another, so that the audio frequencies assigned to each channel are available at the output of the filter with the information content prefixed to them. The filter 28 is followed by a demodulator stage 29 for each channel. From the channel-specific audio frequency, this stage acquires the information corresponding to the pulse sequence of a selected code. This is followed by the regeneration amplifier 30, which raises the pulse signal to the necessary for further processing JM level and the evaluation device 31 'for processing.

If the evaluation device 31> is a process computer, as stated, then this will make an error log from the data described in the example. In particular, the following information is available to Hechner from the respective channels of the sound carrier 2:

Channel 1: The continuous pulse train, each of which the respective length of the substrate

to identify

the location of the defect in the longitudinal direction of the substrate ·

Channel 2: The continuous pulse indicating the presence of an error from its beginning to its end.

Channel 3: The binary coded information indicating the location of the error on a certain portion of the substrate cross axis.

Channel 4-: Binary coded identification number of the error.

The information of the channel 1 is ge'geben shortly after preparation of the substrate iia Zusamme ANNEX with the application of the sound carrier to this and is used throughout the Yerarbeituiigsprozess'es as conductance '. The information of channels 2 to 4 comes from the error analyzer. By occupying further channels, the information of further Jj'ahl eranaly sat or s are stored. The number of channels available in the Tonfre- frequency range as a carrier frequency is large, taking into account the mutual interference immunity, enough to all necessary Informatiuue «. to be able to transfer. As is well known, when selecting the channels it is only necessary to ensure that the channel spacing is sufficiently large to avoid crosstalk and that the harmonics of one channel do not fall into another channel.

For this, the generally known principles of communications technology apply.

At the same time, the error statistics in. The memory device of the computer .31 is stored by the evaluation unit for Yergleichszwecken., Which has the possibility of recourse of the evaluation to the stored information. The evaluation unit evaluates the error statistics according to a defined program and then controls the further working process.

Example 5

As described in Example 4, the evaluation device receives information about the condition of the ribbon-shaped photographic material.

The. Evaluation device optimizes the program for the cutting device; this minimizes the waste.

Example 6. ,

As. described in Example A- , receives the evaluation device information about the state of the band-shaped foto-.grafischen material.

The product obtained from the cutter is stored in a classifier using information

the evaluation device sorted according to the specified quality criteria ·

Example 7

During the production of photographic triacetate base immediately after the cutting knife for edging, there is a pulse laser. The automatic counting function triggers cln ^ L auj en dt pulse sequence. Due to the high energy of the light pulses a local heating is caused in the triac etat layer carrier, which leads to a local structural change. , Also located at the coating station for the production of photographic imaging materials is a laser which measures the local microstructural changes as a change in the reflection of the photographic triacetate substrates, following conversion of the reflection change to a current pulse, further control of the process of preparing photographic imaging materials as described in Example 1

Claims (8)

Pat claims 1. A process for the complex control of the production process of ribbon-shaped photographic support and photosensitive photographic materials, characterized in that. "known magnetic information carrier and / or other information.   carrier on the support or photographic material or introduced, and that · This bz / w. these information carriers before and / or during the production of the support or the photographic material information for the '. Control of the manufacturing process combined   locally assigned-abandoned with state information and that during the passage of the ; this information carrier by means of Heßwerterf-tion-r devices a sampling of this information to control the current and / or subsequent; Working process is made. , 2 '' Yerfahren: according to claim 1, characterized in .- .- that the information carrier is formed so that over the. In addition, during the technological process of the production of the photographic V '1 ^ T "Ώ""i' ^ C" ΐ "-'Λ" P. ^ "^" ^ L i2 "T ^- " ΐ O "*"> ^ Ό 'y ¹ 1 T ^' - ^ - "fiVi £ ip: T-1 ^. I ^ Q '^ C ^ l ^ and optionally for further control of the technological. Expiration is abandoned. 3.! / "Experience according to claim 1 and 2, characterized in that the photographic support receives a localized irreversible change, with both the storage of the given information as well as the storage of the state information of the photographic material TAT; Λ HpI is carried out, "with the aid of the information stored in the material by irreversible changes after its re-inquiry, the control of the teehnol-ogisehen -Ublaufs the HerheHungs-" oroaesses occurs. The method of claim 1 to 3 _5, characterized in that the information carrier on the support or photographic material is segmented or endless up or introduced. A method ice 35 as claimed in claim 1, that the information carrier the information n a, certain Oode as a perforation or markings with reflecting, scattering, OSU "* pi Y) r {FCI 7"> Λ Λ SV · - -jv ₁ er .- ^ T ^ V. "£} τη c * - ^ Γ \ dr: ~ 7 \ Λ ~ -ώ" η Ο ^Λ "^ ί 7" Γ ^ * Λ PrT ¹ ^ ₁ ~ η>.. p "r" 9 be introduced. 6. A method according to claim 4, characterized in that the application of the information to the information carrier in accordance with the predetermined code by modulated or keyed laser beam, microwaves or spark erosion succeed 7. The method according to claim 1 and 6, characterized in that as measured value detection means electrical, optical and pneumatic sensors - be used· 8. The method according to claim 6, characterized in that the output signals of the Meßwerterfassungseinrichtung en are encoded in the information carrier unt}. ¹ / are converted by evaluation devices into electrical, pneumatic or hydraulic signals for further control of the production process. 9 ·· method according to claim 1 to 8, characterized in that nach'jeder technological production stage the ^; Material errors determined by measured value acquisition devices or error analyzers are stored on the information carrier and evaluated at any time, .vorzugsweise preferably after completion of the coating process by means of appropriate facilities and compiled in a fault log and then the sorting is performed in a classifying and sorting. 10. The method according to claim 1 to 9, characterized in that the control of the cutting and sorting process of the photographic material is carried out by the information stored by I'anan analyzers on the information carrier. 11. The method according to claim 1 to 10, characterized in that the information carrier remains both locally associated with the photographic material to the final production as well as separated from this for controlling the further technological s \ Ο ^! Γ c ^ "Λ" p ο ¹ ^ T ¹ ^ "^""^ ρ- ^ -ι ^, γ>c; T) T- '' ~ * - ^"'^, i Q ^ l Λ be scanned by touch of the same or non-contact. 13. Dervereilil according to claim 1 to 12, characterized in that the information obtained by the scanners Romat ic new both unaittei-.bar used for control as well as indirectly via evaluation devices for controlling the Herstellungs'orozessee be used. drawings