DE1761465A1 - Ink cartridge and ink dispenser equipped with this cartridge - Google Patents

Description

PI ¹ MEY BOffES, INC., Stanford, Connecticut (VeSt

Ink cartridge and with this cartridge out equipped ink dispenser

The invention relates to a printing ink cartridge for Printing devices and ωίΰ this cartridge equipped printing ink dispensing device or «, inking unit,

Of the two commonly used types of Druckfarbonauftragevorrichtungen a Druckfarbenreservoir- with the applicator via a wick is connected at the one installed over the ink is supplied by capillary action of the Bolle. The second type is a color-absorbing organ,

BATH 0 "" '3! NAL

109827/0354

176U65

for example one with a certain amount of color Saturated felt provided, the one adjacent to the Holle this constantly a sieve but steadily reducing Amount of Faroe supplies o The first type has the advantage » that a large amount of ink is applied to the applicator roller is available, but the disadvantage "that the printing" color, when set in motion, the wick eu much Can supply paint so that paint will drip off of it o The disadvantage of felt rollers is «that you cannot apply a constant or uniform amount of paint to the surface of the application roller « because the ink supply in the felt roll is constant decreases »When the felt is initially fully saturated, dripping can occur and, if the amount of paint decreases during operation, the degree of saturation decreases the surface of the felt in the same proportion

The invention is intended to combine the best properties of both of these known devices _{9 in} that, on the one hand, a large ink supply should be available and, on the other hand, the advantages of the construction using a felt should be present without the disadvantages of this construction, i.e. the continuous Decrease in saturation during

109827/035 * ^{SAD 0RIGINAL}

176U65

de? guest-en company sea "* 'and d: la 3 €.:? ahr of a from ~ drops ens v. bernosmia were, en ο

In the case of usual color inquiries, there is a Problem in; that the e.iif the AufSrageroll.e and the The amount of letters transferred with each printing process in the donkey slightly; ablmnt ».01 add it * that that? Seitpunkt only poorly recognizable int, on which Insufficient ink from the ink dispenser is transferred and this device must be replaced o AueL the elimination of this drawback and the creation of a novel cartridge and printing inks using that cartridge dispenser at which this point in time a comparatively quick print-out of the printed matter is easily recognizable to the operator, also belong to those on which the invention is based Tasks"

The aforementioned objects are achieved according to the invention in that the cartridge has a jacket impermeable to the paint, which with. the color absorbing ea, porous material ge: * \.! lt is ^% 5, part of which protrudes through an opening of the outer layer, and

1 0 9 8 2 7 / η 3 5 4 5AD OHiGiNAL

176-U65

that the porous material consists of a core part for storing a significant Henge of color and one between the opening and the core part arranged metering layer made of porous material, the pore size of which is smaller than that of the kerat cdis exists.

Preferably, the core part consists of essentially non-compressed polyurethane foam and the metering layer made of similar polyurethane foam, which is compressed to about a tenth of its uncompressed state, with the addition layer on the compressed porous material as well only rest against a rope of the Uaufang of the core part, which is made of uncompressed material can. In a paint application device using a cartridge, this ax is next to the cartridge jacket a paint application roller stored in such a position that they come into contact with her with a pressure roller caused rotation with the metering layer via the opening in contact can, wherein the cartridge can be cylindrical and rotatably mounted so that it can be at a Rotation of the application roller is set in rotation by this.

109827/0354 "AD ORISINAL.

176U65

In contrast to the usual color detection devices, where the job role; color is continuously supplied, 30 that this excessively with then paint that tends to drip off can be saturated, the new applicator is with a Provided device, dia driven by the pressure roller only periodically

109827/0354

176U65

r-

Order roll in its non-powered state keeps out of contact with the frame and preferably consists of a bearing of such oversize, that the application roller stored in it in its not driven by the pressure roller state on the The lower part of the bearing surface is supported in a position in which it does not come into contact with the cartridge has ο

An embodiment of the invention is described below Part of the description described with reference to the drawings.

In the drawings is:

Figo 1 is a perspective view of a Ink dispenser;

FIG. 2 is a sectional view taken along line 2-2 of FIG

Figure 3 is a sectional view taken along line 3-3 of Figure 1;

Fig. 4 is a side view of a cartridge and the Dispenser;

5 shows the ratio of the capillary forces to the degree of saturation of the foams showing curve diagram; and

6 is a section through another embodiment of a cartridge.

BATH ORIGINAL

109827 / 035A

Per external label 10 of the cartridge there is one for pressure: * '? /? ; es imdurchläsE'.igea Mater -Lr L of sufficient rigidity ,, for example plastics The jacket is τοπ cylindrical rise tier shape and closed at one end ,, while · :! its other end one or more openings -?:! 12 comprises ο The open end of the shell is covered by (iinem lid 14- "The jacket 10 and the Dee-sc ?! 14- ha'oen aligned al titlere bores for receiving Λ eirer central shaft 16 => The central shaft 16 has Grooved ends, oak fit tightly into the aligned central drill holes of the jacket and cover, so that when the shaft is driven into the central bore of the cover and the dachshund is placed on the shaft, the entire component is almost held together Shaft are provided with Legern 18 and 20. The position:? 18 sits in e'Lnor slotted bearing plate 22 and the bearing 20 in a slotted _{bearing plate 24- o} The whole component is in the bearings ™

held by €; ines spring-loaded Klanmergliecis 26, which is pretensioned onto the bearing by means of a Zugfei ^ iRin is ο

The cartridge IO is designed in such a way that it fits the lid adjacent end is enlarged in diameter "so that an outwardly protruding initial section 30

109827/0354

formed wire _o From Fig. 1 it can be seen _t that there is a CC opening $ 2 in the uniform section 30. A freabars application roller is arranged on the bearing plate 24; that the scope of .IrIIe contact with the projecting Umfangsebsclinitw has $ 0 of the cartridge and bears against de :: opening J2. Fie. ^ Jftragerolle 34

^ consists of a porous or foamed "to take up clay liquids _s like D: cv.ck? e.rbe, suitable material, for example polyurethane", the whole component including the cartridge 10 and the application roller is arranged so "that the Holle 3? > .it a printing roll or printing cylinder 36 contact ha ,, of isto shown in phantom in Figure 4. the platen roller ve with raised metallic Druskeieirethern at a curved part of its outer surface: sphen _t so that upon rotation of the platen roller, the letters in contact with.? the

"Surface of the application ^{roller 3 Zl} konmsn. The remaining part of the pressure roller 36 is undercut so that this part of the roller does not have continuous contact with the application roller protruding cut 30 of the cartridge "C, so that the cartridge siel" also rotates.

109827/0354

The applicator roller 34 is seated on a tubular bearing 38; the pin 40, which is fastened to a cU-r bearing plate 24, is mounted i "t <> the bearing 28 is larger in diameter than the pin 40 _s so that" Ί.βϋη das stock on Deia pin 40 rests "the applicator 3 ^z i- not sieve into contact with the outer surface dor cartridge Io befindete However, when the Druelr"; Alze 36 rotates and roll, with the orders korarat in contact 34, is the role about the pin Pressed excessively upwards into a position »in which the peripheral surface of the Holle is in contact with the peripheral surface of the cartridge 10.

Dar Innez-ί: c'er Pati * o>. ·.! · IC \: rb vclli.g ait a gofoamed - ^ atsri ^ lo ^ .üds ^ iilsweice Polyurot "Jban _t g-vfülllio Here .vLid ScfcaumütOxi '" / oj ^: · \ νοΙ v ^ rci.chiedonan texture on ve ^ vvenrifito der öt.'i. The main part of the foam making up the animal part is referred to in the following a3.3 as a3.3 non-depressed "core 50". This part of the foam took up a large amount of printing ink

109827/0354

J9

Slide 52 made of suiiaiaaengöpreßeaü foam (Pig * and 3) * The Zinpeßscbicht 52 can be made of the same material as the core 50, but is not in the:! Roien and unsusavamen pressed state v / ie the Sani, but i «t up compressed to a fraction of its original size. It is nieitt se necessary CTAs susammengepreßte the foam layer 52 siciii completely around the periphery of the Patronenmant «l £ ·· heruia extends" The layer 55 was also only be so large that they _t the opening 52 covering 6 zsigt a cartridge with a smaller metering layer 52.

Since 3or Echaumstoff into the core 50 ^ n its uncompressed Zustsnd befindec _t are R 3 pores larger al-s the Poce.n def zussis engiix ^ ^ eßtea foam of the Zumeß;? Chicht 52 _o In other words, the percentage of empty Haum Inside the uncompressed foam is greater than the proportion of empty skin in the foam that is to be compressed. The uncompacted foam can therefore not only absorb a larger absolute amount of printing ink because of its greater expansion, but can also contain more color than that because of its larger proportion of empty space

BATH ORIGINAL 109827/0354

- ^ üT'i'iv.ktG Sell ·? «?! fabrics. .lnaerersGiVS is, vn.e late «:? be explained * _v vird the liapillar-V7irkung in the niuht compressed foam erheb3_icb less than the capillary action in the compressed foam, "dob that, as shown in the graph in Figure 5 _o? de :: 'Color degree of saturation of the two showers; parts of their contact area varies »

The purpose of the non-mixed tone kernels is to recreate the color :? fi * form, while the purpose of the compressed-Bol j.eht 52 5 ^.::,: ^ χπ is ,, ainen Sleichv / ertigiin Sättisung; f5 £: Raae to ö.qt · Patroiienober · «· f i.äche ? sufrecttsTierhaltt ^ · "xma daöwrr.h oire glsichi'iäßige saturation dei ^x applicator 3 ^L> njad oinon uniform DruckTorg, ng at ^ eder UrnärehriRß au ^ -" ^ cihrleisteRr If the high pressure ink the raised printing%

elements supplied una '/ on these transferred elements on cie to bedruckenie surface, then the uniformity with eggs, the ink is applied to the surface to be printed is _t τοη very considerable importance "Dan.li; cie pressed letters or the gloss a uniform: let the printing inks.

109827/0354

176U65

be transmitted moderately. As shown, the print wafer 36 is covered by the application roller 34 with printing ink and this color is then transferred to the paper or the gloss to be printed on. If the surface = »saturation of the applicator roller 34 is kept at a uniform height during each revolution of the printing roller, then an even amount of ink is transferred from the roller 34 to the raised printing elements of the printing roller 36 takes place, then ^ every following printing process will receive a little less color than the previous one and after a longer period of time the color ir. the application roller 3 * will be exhausted "If one can determine in advance: aa ^ which degree of saturation on the object cLat application roller 3 ' In order to apply a uniform color coating of a size which ensures sufficient color density on the printing roller 36 during the printing process, an ink cartridge can be constructed which keeps the surface saturation of the applicator roller 3 * at the desired level.

One way of regulating the color of the cartridge on the applicator roll 34- exceeded amount of paint

109877 / 035Λ

ft

in "determining, during which the roller with the surface of the offenliegoaoen in the cartridge" is the period to the foam side in contact ,, example kezmfce the opening 32 so extended v / ground that the hell 34- ^ ith the Sciiaumstofl 'via a: i longer time schedule is in contact and therefore more color is graded on the roll while the pressure is being transferred ", ^ If less printing ink is desired, the size of the opening would have to be l <2 smaller. Theoretically, the opening 32 to extend around the ganae cartridge »

The sweetener core 50 located in the cartridge is made of a porous material, in which rows of kloizi'in cells oiler pores are used to form a similar material. 'ü ^ rbundan sindo

When the ßch & unistoi'f toilv / else in laine liquid ^

When immersed, the interconnected pores will act as thin tubes which cause a capillary effect, through which, against gravity, liquid is drawn into the foam. The larger the cells or ports, the smaller they are of them he I ¹ VOiCgO call enen capillary forces; Xn the same seise v / ground before smaller 1-oren greater iCapillary forces caused »

109827/0354 bad u - ^A

Claims (2)

P 4-70 Expectations > <SBSS8SSS32SSSB *> I Ι »/ Ink cartridge for printing operations, thereby characterized in that it has a coat impermeable to the color (1 °), which with the Color-absorbing, porous material is filled, one part of which passes through an opening (32) of the jacket protrudes, and that the porous material consists of ainem Core part (50) to store a considerable amount of paint and one between the opening (32) and the Core part (50) arranged zuKeß3Chicht (52) from porous material, the pore size of which is smaller than that of the core part (50), 2. Cartridge according to claim I _9, characterized in that the core part (50) consists of substantially uncompressed polyurethane foam and the metering layer (52) consists of similar Polyurethansohainistoff 23 109827/0354 ^iAD about a tenth of its uncompressed State is compressed ", Jo cartridge according to claim 1 ocJe :: · 2, characterized., that the Zvuneßsclaicbt (5 -'-) from si-.saismengepreßteia porous material on at least one part of the circumference of the material which is not pressed into place existing core part (50) is applied. 4ο inking apparatus nit an ink cartridge according to any preceding claim eineiB "gekeimzeichnet characterized in that next to the Fatronenmantel (10) Farfaau.ftrGgerolle (3 ^ώ .-) ir.t mounted in such a position that they in their hrungskoininen by Inbe ^ with a Druckwaise (36) "caused rotation with the Zumefisehicht (p2) via the ö ££ r.tm £ (32) come into contact with keom«, Ä 5ο device according to claim 4, characterized in that that the cartridge is cylindrical and rotatably supported so that it can be set in rotation by the applicator roller (3 * 0) when it rotates 6c device according to one of the claims? ¹ I or 5, et by a Einriohtunr: (? K .. ^ O), ric di.e only periodically driven by the pressure roller (i> 6) Application roller (34 ·) in its non-driven state keeps out of contact with the access sheet (52) » 7. Device according to claim 6, characterized in that the device which temporarily prevents contact between the application roller (5'4) and metering (52) consists of a store (38) γοη such an oversize that the orders stored in it »roll ( 34), in its state not driven by the pressure roller (36), is supported on the lower part of the bearing surface in a position in which it has no contact with the cartridge. 109827 / 035Ä BATH ORIGINAL Blank page