DE2104309A1 - Microfilm in sheet or strip form with improved identification section - Google Patents

Description

PATENT LAWYERS ₂ DR. BRANDES, DR.-ING. HERO 'thbök «pil)» ew

Reg.-Hr. 122 '

Eastman Kodak Company, J4-5 State Street, Rochester, State of Uew Toric, United States of America

Microfilm in sheet or strip form with improved identification

drawing section

en

The invention relates to a microfilm in sheet or strip form with improved identification section, which is used for recording suitable for identifications that can be read with the naked eye and, together with the entire rest of the microfilm part, in accordance with the usual known method is reproducible, consisting of one layer support, at least one light-sensitive applied thereon Emulsion layer and, if necessary, intermediate and / or cover layers *

So far it has not yet been achieved in a satisfactory manner _; a known under the name "microfiche", present in sheet or strip form microfilm with the identification of the film-enabling identification to be provided that is easily visible and legible, not only on the original with the naked eye, but you like to the DER a * microfilm, in which it is in the Hegel a Dij azofilm, more usually using known repro [duktionsverfahren copies made.

There has been no lack of attempts to render this problem more satisfactory Way to solve * For example, microfilms of the other

■ given type known, the encased or with a shell provided tit el sections (jacket headers) on v / iron, as well as Microfilms produced by Technifax Ine, and under

. under the name "Title Diazo Microfiche". A disadvantage of these known microfilms, however, is that they do have a lettering and identification of the original on the other hand, do not allow a satisfactory reproduction of such a marking if they are reproduced by customary known diazo processes. For example, the last-named "product is a .reproduction the labeling not possible at all and iia eret mentioned The product only succeeds with difficulty.

The task of the järfincvaig is to 'add a microfilm of the specified as ax ¹ xmez is known as "microfiche", * on'der'eicli through a label section; - \ se.iclraetj / welciior not just in simple terms with one with '^ ·. & Χ $ ά readable identifier xaK can be provided,

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but in addition, including the marking and the remaining part of the microfilm, can be reproduced using conventional, known methods is.

The invention is based on the surprising finding;

that the stated task is particularly advantageous

se can be solved in that at least the labeling j

cut of the microfilm with a pigment-containing layer '' is provided with a precisely defined composition.

The invention relates to a microfilm in sheet or strip; fenform with an improved identification section, which is suitable for taking up identifications that can be read with the naked eye and which is % reproducible together with the entire remaining microfilm part according to conventional known methods, consisting of a layer support, at least one light-sensitive emulsion layer applied to it, and, if necessary, intermediate and / or cover layers, which is characterized in that at least in the marking section there is a comparatively thin layer, which is transparent to visible light and practically transparent to photographically active radiation, made of a polymeric binder and a pigment dispersed therein with a refractive index of about 1.6 to 2 , 1 has.

The microfilms according to the invention, which are usually of the diazptype, have the specified ^ thin, pigment-containing layer either only in the strip-shaped Areas that are designated as identification sections, or over the entire surface of the film. This thin, see-through, pigment-containing layer makes it possible in the identification section on the microfilm, identifications that are legible to the naked eye, e.g. typewritten, printed or handwritten pictures and / or lettering can be applied or in the light-sensitive emulsion layer of the identifier present in the identifying section legible to make, with the permeability of photographically active Radiation and thus also complete reproducibility

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of the entire microfilm, including the identification sections and the ones contained therein. Markings, according to customary known diazo reproduction process is given.

The microfilm according to the invention is illustrated by the attached Drawing illustrates in more detail in the represent

Figure 1 the Yorder looks at one under the name "Microfiche" known microfilms in the scheme,

Figure 2 shows a cross section through Ä.eR labeling section! of a conventional, known microfilm according to FIG. 1 in the scheme, and

FIG. 3 shows a cross section through the marking section - A microfilm according to the invention according to a preferred embodiment in the scheme.

The microfilm Ί shown in FIG. 1, the design of which [practically corresponds to that of a microfilm according to the invention, has the identification section 2 in the upper part and the information storage section 3 carrying the information, for example in the form of copied pages 4, in the lower part. The identification of such a microfilm takes place, as already mentioned, usually by entering markings 5 in the marking section 2, which can be effected, for example, by machine inscription or photographic reproduction of markings.

■ The identification section shown in Figure 2 of a customary known micro film of shown in Figure 1 embodiment is comprised of a substrate 6 and a aufgebracntem thereon a light-sensitive emulsion layer 7, for example a dissociation or Silberhalogeiiidemulsionsschicht. The layer support ksnn from a film obtained by extrusion or otherwise (bus the most diverse, for the επί
consist of substances commonly used for a given purpose,

108136/08 «0

ORIGINAL iNSFECTED

• · t I

z. B. from a film made of polyethylene terephthalate «, cellulose acetate, Cellulose acetate butyrate or other gelulose esters or other polyesters, as well as from polyolefins, BbIyamiden or polycarbonates.

In the microfilms of the specified type, the various usual known ones can not be found in the figures; shown There are base, intermediate and top layers, ** B. so-called underground layers, as well as adhesive layers, antihalation layers en and antistatic layers, with the help of which the occurring when using such hikrofilae Problems are satisfactorily solvable, e.g. * B. improved adhesion of the emulsion layer 7 to the Layer support 6 is achievable. Figure 2 shows that;

in the usual known microfilms of the specified type, including in the identification section of the same, practically only a single layer support surface is coated ^: is coated. .- ": ■ · - ..:.

In contrast, a second layer 8 is in the example shown in Figure 3 microfilm according to the invention, at least of the same in the characterizing portion, above which on ^the: is applied facing away from the emulsion layer side of the layer 7 Slower. 6 This layer 8 may, however, as further un- 'th is still running in another arrangement vorlie- m gen. In layer 8 is by the specified-thin, made of a polymeric binder and dispersed therein a pigment layer, which is characterized by the specified advantageous degree of opacity and diffusion and by an almost complete permeability to photographically active radiation, so that the specified improved reproduction properties are achieved.

The well-known microfilms of the The problems mentioned are obvious up to a high degree on the fact that up to-

109836/0890

a suitable combination of substances is not available ^; -gung, which on the one hand is sufficiently opaque to visible light, i.e. has the right degree of transparency, so that characters printed or written on it or characters produced in microfilm can be read with the naked eye, but on the other hand for the production of the microfilm radiation used is completely or almost completely transparent.

In contrast, microfilms according to the invention, for example those of the type shown in FIG. 3, in which a thin, pigment-containing layer of the specified composition is arranged on the layer support opposite the light-sensitive emulsion layer, due to the particularly advantageous properties of the marking section; which on the one hand is sufficiently transparent or diffuse to make the markings applied to it legible with the naked eye, but on the other hand is sufficiently translucent so as not to impair photographic exposure Identifications, e.g. labels.

In the finished microfilm of the invention, the thin pigmented layer in the flail is about 0.75 msec 5 microns (0.03 to 0.20 mils) thick. This pigment-containing layer can be applied to the layer support in the usual known manner, for example by roller coating, spraying, flexographic processes or etching processes. Such layers are applied in the form of solutions in which the weight ratio of binder to pigment is about 3: 1 to 1: 3; and a suitable solvent or Lösungsmitteigeaiiseh i'iit ^1, the polymeric binder is present. as

as explained below, only

109836/0890

INS * EiTFEO

.if,.,
■ "■■ :::

those in question that have a refractive index of about 1.6 to

2.1 have. The production of solutions from polymei »ea,

Binder and pigment can according to known, for the production j

of polymer-containing coating or spray solutions übli- j

The mixing processes that are typically used are carried out, ζ * Β. by ** *'.;

Mixing in a ball mill, a so-called Kady mill »ei- - {

a roller mill or by dissolving the in a binder ( predispersed pigments.

To prepare the coating solutions, the variety of conventionally known solvents can be used _f selbßi - but verständliGh in Abhändigkeit the type of binder used and on the compatibility of the löeungiaittels with the substrate and the photosensitive Bnuleion, further comprising also the special "substrate attack * properties of Solvent must be taken into account on the substance building up the layer support.

After the layer has been applied to the substrate, the layer obtained is dried by evaporating the solvent according to customary known methods, e.g. with the aid of hot air, so that a thin layer, i.e. a layer with a layer thickness of about 0.75 to 5 microns ( 0 _r 03 to 0.2 mil), preferably from about 1.25 to 3 »8 microns (0.0 $ to 0.15 ail), of which about 20 to 80 percent by weight of the pigment and 3u about 80 to 20 wt .-% consists of the polymeric binder.

According to a preferred embodiment, as shown in FIG is shown, the thin pigment-containing layer is on top of the light-sensitive emulsion layer, e.g. diazo emulsion layer, arranged opposite sides of the substrate. However, it has been shown that the thin, pigment-containing Layer can also be arranged in another way

10S836 / 0890

OFHGWAL

k'uiiii, namely entv, ^r ea-r between, the Scuichttrr ^ ei- uirl dor emulsion layer or above. der ■ Em ¹ j Ir ion r £ '".' .., i-.:· t, :: - rmi.M ~ dont im ii.emizoicj: / jn · :; Gr ^j bsc? j.nitü. des I ^v iiirrufi] .i: ir. Lie-jb di '"' itige Gc '.- icnt in one of the lct' .- t ^ f-.iLP ^ ntru AijT.rd-V ⁷ Cj-, ^t: o mn B? 'r Ibstveivtähilicti for it hio; · ^ - <> -! ■' ■ · .. "..:

Twit'-iinc / i'V ":;. · Rtv.:· ■" v ¹ . ^r '1:; r ^ ijliCi. r-ind,: ^v ^ ^; · ^ ■ "" ■.! '-. τ \ _; ; _: .? i] - ■ --j:? : ιοΏ: jU -. :: p ^:. jN '.>; i-. : ^ iro'i'.ii ßii "ej: r'i ^; τ 1, · \;. ·: i Π:; ·> - .. ''i"; -.:· ΐύ '']. Ί; nrci.itfi: ']. ΐ " _ν bee 1."i'mustv.'eraoi ..

Regardless of the arrangement; the close & e \ e: '> nn thin, piginenth ^ ltigen Sciiiclit in bezvnj- called shift tam- er cöc "? JMnul ^ ionnfi,;" j.ioht k'. 'nii, as £ ioi- goneifft ix ^ t, the gecrmtr . The surface of the microfilm must be covered with the pigment-containing layer of the ijussmmensetaung without affecting the finished product. For economic Erv: ägungen However, it is of course nshelicgend, a derrrti _t '; e layer provide the Hikrofilms only in the labeling section, ds & uf this way erhslten the invention ersielb ^ ren advantages and the manufacturing cost of the microfilm according to the invention are reduced..

In the thin pigment-rich layers of the microfilm A wide variety of conventional known polymeric binders may be present in the invention. Everyone has one another in Hegel Binder nls proven to be clear, for photographically Active radiation permeable and all binders for creating backsheets for printable and writable ones Materials are usable. Typical suitable binders are e.g. cellulose nitrate, cellulose acetate, cellulose acetate butyrate, Acryloid ^ Poljeefcer certain type, vinyl resins, Rosin and rosin derivatives, shellac, epoxy resins and mixtures of such substances, which are used in the Hegel together ai "b deij necessary additives to the Dispersion, flow and adhesion when binding the like substances to improve.

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BATH

Vi "i especially: voi f 3ilhaf to binder ^ aban -sici polyamide resins κίκϊοΰ ^ ιι, which are characterized by an improved aaicuiy on iil / Lichen known layer carriers made of polyester films, In be ^r ; Oii-Jerj are more advantageous ' ääiso can be used P; lya> uLdharzo, and ζ.ιάϊ aK'DndensatioiUiprodukte of dicarboxylic acids, in particular di-.uric acids, uit linear diarains, e.g. the polyamide obtained by condensation of dilinoleic acid and ethylenediamine (known. for example under the trade name "Vörsamid 940 "of the US-ii.ii.s ;! General Hills), which is a solid polyamide resin, ii. c ·) ... ei .; soy, aminated from an average of 4 and eini.i Schn. ^ 12- Muakt of 110 "C is that simple in various alcohols, for example ^ ii-propanol, is soluble and which is characterized by good adhesion sine m excels in plastic of various type, eg on sheets made from polyalkylene terephthalate, modified Polyäthylent'ivöiiliühalat and polyolefins. The "aniin ^ v / crt ^{; l} corresponds to the ig KUH, which are equivalent to the base content of one gram of polyamide, determined by titration with hydrochloric acid.

Known polyamide resins have also proven to be suitable binders Proven for flexographic printing inks, which can be assigned to a different type, uni which diphenolic acid (DPA) 4,4'-bis- (4'-hydroxyphenyl) pentanoic acid and which are also soluble in simple alcohols with the formation of varnishes.

The polymeric binders used in individual cases are expedient ' moderately selected according to the degree of their adhesion to the layer support films used, and in such a way that they are easily on the i Foils adhere. However, special adhesive layers can also be used! / ends. When using a polyester film, for example, j se, e.g. a polyethylene terephthalate film as a substrate er j For example, it is often expedient to use an adhesive layer, e.g. one of that described in U.S. Patent 3,488,195

T / py. to arrange. '/■:.n/endbar : iiu however aacl * .iah L rich other adhesion layers or irundsciiicht, -η, which the adhesion of the i.Indeiaitteli u: i the layer carrier »eri ^ sera, without the permeability of the Lr visible lights; in the Kan; i; ^ ichnungsabschnitt to impair uisr the in the photograph! 5j-h sensitive part of the Mitrofilu3 '/ orgendäe Diazo- or. ^v jilDerhcUDgenidemulsionsschicht nach! .-: -.

■ 1-0

Dnp in lew · pol; , ηε-Γί υ binder άίί ^ ρ rvi · - ι ■ pigment χ »·;, *!?, as already erv-ännb, a refracti vv i ..-. ι Ou -.; - on something Ι, υ to 2, '"Fufweir-n, d °: nit der eriora-: · ϊ.1λ :: e ■; * .- rings Gr-rd r.; i coverage is achieved. It showed ri" .., · 1 ^. ^: ί Pigments with a refraction. «index im angegeocj.uν: ■ rfj::" Ir photogrr-rjlijcoh fictional radiation practically, dui-Ciilörrig iJuo ιυκί an opacity that changes on rc ir "". ~ o <': i ^ l: e: i, wein r ± c. in π. ·. i ndemittel 1 · :: specified T ^ pr in -Loi ^ eiitr ^ tionr.:, ^.-._. ·. ^ tv. ^ O to 80 ürw .-t in ioi ^. a 'jie ::, = :, level. _(J t ^: ii ..- ».- ·:. f vM. ;; t-MCion Schicixt; Eiiniest im Kenn ^ eic'.iiiUu ^ HabGcmiit · ^ oc =: - I \ or: <3 ilr _u n vorlio.rt-u, vTs result in: - "t, drß Identifisier ^ no ^ ueu , that of si; .ion .- ¹ Jfr-jebrr -pits or the enulsions layer egg level, visible with a small eye and legible;: d.

Typical suitable pigments of the specified type are, for example, Bf'SÜ ^, 1: s known under the name "Baryt", also Ziukoxyd and "Lithopone", which are chemically combined with ZnS.BaSO ^, be-3 ei dme-1 k ^ nn and the pigment f «? chin?% nn is well known. Corresponding tests showed that silicon dioxide, the conductivity of which is 1.55, 2, can be used according to the invention as pigment, from which it follows that pigments according to the invention are called those with a yeast fraction generally indicated Area are limited.

The inventively achievable surprising advantages found out when the ocking capacity is achieved by coordination of .Pigmentkoiizentrrtion and layer thickness in the way is controlled, ie the opacity and diffusion properties of the layer obtained lead to labels indicating those entered in the labeling section or in the photographic emulsion layer of the labeling section can be read with the naked eye. Layer thickness and pigment concentration are controlled in such a way that the Opacity or density of the finished markings have a value that, when measured with the aid of «in · 8 integrating Rueelspektropliotoiaeters altogether »ine optically« sealing

109836/0890

te of at most about Ο, ί, preferably about 0.2 or underneath, results.

The optical density is ^rr course both the concentration of the pigment in the binder ls puch by de ^ thickness dec * call the substrate "-uf.getragenen pigmexith ^ ltigeri splints epending · V;. Ird Ι-" ε pigment in concentrations dec rnge- xeoeneri Lreichs '~ iv; e' ^r ~ ndt, so v. the desired optical density is achieved with a thickness of about 0.75 to 5 microns (0.08 to 0.2 ir.il). If <-; ε in the case of the appropriate, a markings bFcIr ^ i of the specified type sufvreisende Kikrofilmen uxi those that are to be rolled, then it is better to avoid. '. · -, d- ^r »; to compensate for the differences in the characteristics: - / .- nungsebs-cut and information carrier - o ^ cut in the disadvantageous way a thicker-equalizing strip fngevT ^ ndt vrerae ■. xv.vi which allows a uniform rolling-up, '4ε advantageous erv.'iesen that Diciie of Kerm ^ verifiable-voltage ^' ^ r Gschnitts unt otv · - · "2.5 microns (O," mil) to hrlton.

In order to obtain the advantages achieved according to the invention, is it is thus possible to determine the layer thickness and pigment concentration within combine any of the specified areas, nua the desired optical diene of at most 0.5 and the achieve the desired diffusion properties.

In the Kikrofilmen n- ^ ch of the invention vie oereits can erviähnt be present substrate, pigments and binders of various Tjps and you the Konsentrption the narrow, jc ~ surrounded components sov, ie the k-nn Sohichtriiokc be very different. According to a particularly advantageous and preferred :; Embodiment of the invention, the microfilm according to the invention, which is to be called "microfiche", is one of the usual, well-known Dicr.otrp, which in the Kennaeiehnungsrbsv.Vii-.itt an "etv: -""2.7 ^ ■ - creit Streif ';; -: a 2.29 micron (0.09 mil) thick splint with a content of 40 G-Ew.-vö Sinkoxyd, dicperci ^ rt in a by con-

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BAD ORKSiNAL

- * £ - 2 (0Λ309

. ± c " bio: i of dilinoleic acid in the i tili ^ lenediamine possessed polyi! Binder, '- / obei the in fore of a strip r ^ jtr- ^ eü -.; - layer on the side of the sonic rite wearer- : is 3T, lie the slide ^ emulsion layer bearing sides i -> depending η üb ex-located.

.: Manufacture of such a layer from pigment and. Am- It takes place on a wake-up basis f · o <'ai' "atträTer3 with the help of a Beschiclitixagslösung that to ; ■: ---.-; .-.> -As de 1.1 PDlr / ernidiiars les specified Τ ^ ρκ,.: A 20 Jev /.

2.5

V: contributing> 3iichlceit, and the balance of n-propyl alcohol t ~, in the V / else, the layer obtained in Doss humid..

has a thickness of about 5 "microns (0.20 mils).

,.; : i lar ii'O-'knung of the layer according to the usual, known hot air-7; -,. · !; u ceil ^T .v ^r a layer remaining on the microfilm will adhere to the pivot and binder, the thickness of which is about 2.3 milivot; (0.0) mil) and whose optical density is 0.18. Corresponding requests have shown that in the reproduction of a ii -ι -.:- -r-ngor-plane // ice obtained microfilm according to the Errialiii; "^ with the help of customary known production processes, i.e. using mercury vapor light, up to the 10th! - ■ "- ■ joi-! generation the clarity of the reproduction in the identifier λ xr. r -; - Vtschnitt is not or only slightly impaired.

In the Nikrofilia nf-cL of the invention, which has a düxine, pigment-containing layer of the specified type / ^ iaialest in the form of a stripe in the identification section of the JLL · :. L-, r-ufv / eist, can, as already mentioned, be a light-sensitive iiijht of the most varied types, i Leu acts; es siv.iv, i / ie foregoing- Desohried ^ r --- ^ - L = 5ui; ii.j.ri I ί '"xUMiup ^ in Ii icr.e layer of üinzo- . ■■.'SA-; : .. '. ·.': - ■ [,. ι- . "■■: - i ;; _; ν rw-; . .,;. .ί. ·; ί ι .. '.:; s ^i! "ii-

BAD ORKälNAL

ti

crofiche "to be designated ;: -.... iicofilius, r-ucu .ua 6Ine emulsion layer other 'Hyps, ^7, .Γ · tu, e-IUE Silcerb · Logeni-1 scüicrit customary known I ¹ JP ε η ^r · Ride in.

Through ^ h the invention is achieved. ^ Ht, vi? 3 st? rlc 7t- ' ^r .esserte _f under the name "MicroL"iü; io "^ elzennte t ^ ik-i-ofilme zlil ¹ · 7erugg'i ^ g, which are for .aifaciiie νο, ι HöE.rjt ^ eic: .t ": U ^ -. _J - £ rngr ⁱ r he. Ib.

oignet are, xrobei glel-a r ^ ibi-: the iai ilex; r.2: eicrailings ^£ -i.; - ^ init present identifier ^ -ii'-iir.-α; -i. .in .. ^ αΓαΙ ^ β t, ._- .: "". ". joiege-i-: r-tlon-3i. oane each schv-rierig .:. ■; .'.- .. .-; vo-.iujieri: - ^; :. · i.i'i ^. The ! ^!,. zv jitl u: 3 ni? ch of the invention, uü 'o ^ äa ^ i ^ · d & vort,: - ^ c: ^: /: icii iil iol ^ iie ait Diazo- or Eraulsiori ^ sc ^ i ^ iteri -uderea ΐ; -ρ ^ε aandt, üc-ic;: en are further driirch 3 \; f, dsii Eennaei ^ uauii 'ea, the i :; Kenn.; 3ichriungsabschnitt auf; el.x -.:.:..t or the licntcriLpfiridli x ^ eii
Emulsion layer iia Eenaz-iic.hnin.ji-r b ^ oli.äitt - ^ irr / - ^ rIeIt c ilüd, uit the naked eye 1 ^ icLt lett: -:,. · -Lud.

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Claims (1)

Patent on sOrüche V ^ Iy Kilcrofilni in leaf or streak enforin nit improved Koiinsciciiiraiissabschnitt, which is suitable for * the inclusion of with bare λχί ^ ϋ leroaren markings and together with the, -esRiatori bereicon Kikrofiliateil after usual known a / eri'-lirsii reprodusioroir ict, best ^ - id from a layer carrier, n at least one lic :: ter.ipfin & lielieri iCx-ralDionsccliiciix, sov / io possibly? Λ \ ^τ ΐ-and / or cover layers, marked by, a & il er at least in the marking section a comparative3isv: very thin radiation that shines through for visible light and is practically active for photography; le :; from etvjf? "', 6 to 2, ^ has · 2c Mikroziim nr-ch claim 1, characterized in that the ver ^ loiciicv'eise thin layer a thickness of about 0.73 öio> Miiiron (0.05 to 0.2 mil). J. liilirofilLi iiRcli claims ^Λ and 2, characterized in that a comparably thin layer au etv; a 20 to 80 'each: -: .-; j cue polynereia binding agent and about 20 uis 80 Gei -; .—; -. ? consists of Pigiaent. 4. KiltrofiliTi according to claims 1 to 5, characterized in that i.e. the comparatively thin oil has an optical density Yor: -unter etv: a 0.3, preferential prices of less than 0.2. 5. Eil ~ rofilra according to claims 1 to 4, characterized thereby, dai the pigr-ient made from barium sulfate, zinc oxide or lithopone 3 ^ / 0890 6. IIikrofilm according to claims 1 to 5 »characterized in that that the polymeric binder made of cellulose nitrate, cellulose acetate, Cellulose acetate butyrate, acryloids, polyester resins, vinyl resins, rosins, rosin derivatives, Epoxy resins, polyamide resins or their mixtures "consists. 7. microfilm according to claims 1 to 6, characterized in that the light-sensitive emulsion layer consists of a diazo or silver halide emulsion layer. 8. microfilm according to claims ^Λ to 7> characterized in that the layer support consists of a polyester, cellulose ester, polyolefin, polyamide or polycarbonate film. 9. microfilm according to claim 8, characterized in that the layer support consists of a cellulose acetate, cellulose acetate butyrate or polyethylene terephthalate film. 109836/0890