CA1334564C - Cartridge for an inked ribbon with a re-inking device - Google Patents
Cartridge for an inked ribbon with a re-inking deviceInfo
- Publication number
- CA1334564C CA1334564C CA000579581A CA579581A CA1334564C CA 1334564 C CA1334564 C CA 1334564C CA 000579581 A CA000579581 A CA 000579581A CA 579581 A CA579581 A CA 579581A CA 1334564 C CA1334564 C CA 1334564C
- Authority
- CA
- Canada
- Prior art keywords
- ink
- metering means
- roller
- container
- inking roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J31/00—Ink ribbons; Renovating or testing ink ribbons
- B41J31/14—Renovating or testing ink ribbons
- B41J31/16—Renovating or testing ink ribbons while fitted in the machine using the ink ribbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J32/00—Ink-ribbon cartridges
- B41J32/02—Ink-ribbon cartridges for endless ribbons
Landscapes
- Impression-Transfer Materials And Handling Thereof (AREA)
- Beverage Vending Machines With Cups, And Gas Or Electricity Vending Machines (AREA)
Abstract
A re-inking device is applied to a cartridge of the type comprising a container having a magazine for accommodating an inked ribbon of the closed loop type disposed in loosely arranged turns, and a pair of toothed feed rollers for unidirectional feed of the ribbon. The re-inking device comprises an ink reservoir which is housed in a closed casing fixed removably in the interior of the container, and an ink metering means having an internal portion and an external portion. The internal portion is inserted by way of an aperture into the interior of the casing and is held in contact with the ink reservoir; the external portion is in contact with the rounded external surface of the teeth of an inking roller. The inking roller is always engaged with a drive roller of the pair of feed rollers. A guide bush directs the inked ribbon towards the teeth of the inking roller;
the ink passes from the metering means to the rounded surface of the teeth. The teeth in turn transfer the ink to the ribbon which is engaged with the feed rollers. The metering means, the inking roller and the inked ribbon are of the same height, thus providing for uniform re-inking of the inked ribbon during the feed of the inked ribbon.
the ink passes from the metering means to the rounded surface of the teeth. The teeth in turn transfer the ink to the ribbon which is engaged with the feed rollers. The metering means, the inking roller and the inked ribbon are of the same height, thus providing for uniform re-inking of the inked ribbon during the feed of the inked ribbon.
Description
` 1 334564 Title of the Invention CARTRIDGE FOR AN INKED RIBBON WITH A RE-INKING DEVICE
Background of the Invention The present invention relates to a cartridge for an inked ribbon wilh a re-inking device, or Ihe Iype ~ornprising a container having a magazine for accommodating the ribbon and a pair of feed rollers for the feed movement of the ribbon, and in which the re-inking device comprises an ink reservoir and an ink metering means.
A cartridge of that type is known from U.S. Patent No.
4,071,133 wherein the ink metering means comprises a blade which is in contact with a feed roller in contact with the ribbon and which provides for the ribbon feed. The ink metering means is partially housed in an inking reservoir which in lurn is accommodaled in a rccess in the container; a spring urges Ihe entire inking reservoir, with its metering means, towards the feed roller. That re-inking device suffers from the disadvantage that the inking reservoir can allow the ink to be easily drawn out.
In addition the form of the feed roller which is subdivided into rings and the essential purpose of which is to engage the ribbon for the feed thereof is not suitable for providing for regular distribution of the ink over the ribbon to be re-inked.
Summary of the Invention The object of the present invention is therefore to provide a re-inking device for an inked ribbon in a cartridge, of low cost, which is simple, reliable and which at the same time permits uniform re-inking of the ribbon.
This object is met by the cartridge for an inked ribbon with a re-inking device according to the invention, comprising a casing for the reservoir for the ink and an inking roller engaged with the metering means for the capillary flow of the ink from the reservoir to the inking roller, and wherein the inking roller is toothed overall and is in engagement with a roller of the pair of rollers.
_ 1 _ In accordance with another aspect of the invention, the reservoir for the ink is disposed in a box accommodated within the container and provided with an aperture. The metering means for the ink has a first portion which is inserted into an aper~ure in ~he box and held in contac~ wi~h ~he rescrvoir and a second portion which is held in contact with an inking roller, for capillary flow of the ink from the reservoir to the inking roller and subsequently to the inked ribbon, and wherein the inking roller is engaged with one roller of the said pair of rollers to be driven in rotation by that roller.
Brief description of the Drawing A preferred embodiment of the present invention is set forth in the follnwing description which is given by way Or non-limiting example with reference to the accompanying drawing in which:
Figure 1 is a plan view of part of a cartridge with the re-inking device according to the invention, Figure 2 is a plan view of part of the re-inking device of Figure 1, on an enlarged scale, Figure 3 is a front view in section of part of some details from Figure 1, on an enlarged scale, and Figure 4 is a plan view of part of other datails of Figure 1, on an enlarged scale.
Description of the Preferred Embodiment Referring to Figure 1, the re-inking device which is generally indicated at 11 is applied by way of example to a cartridge 12 which, not being principal subject-matter of the present invention, is described only in respect of part thereof in order better to set forth the use of the re-inking device 11. In particular the cartridge 12 comprises a container 13 having a bottom 14 and a series oF internal walls 16, 17 and 18 such as to define a space 19. The container 13 is closed upwardly by a cover 21 and is delimited by a rear wall 22, a front wall 23, a right-hand side wall 24 and a left-hand side wall 26.
The cartridge 12 comprises, projecting from the rear wall 22, two arms 27 and 28 which are suitably shaped and which at their ends have two apertures 29 and 31 respectively for permitting a portion of an inked ribbon 32 to pass therethrough and be guided to the outside. The arms 27 and 28 are connected by a reinforcing rib 33. The inked ribbon 32 is of the closed loop type and is disposed in randomly distributed turns in a magazine 34 in the container 13.
The inked ribbon 32 issues from the magazine 34 and, guided by a fixed guide 36, is pinched between an internal wall 37 of the arm 28 and a resilient blade 38 to prevent a plurality of loops from escaping and to permit tensioning of the ribbon 32.
The ribbon 32 issues from the container 13 by way of the aperture 31, returns into the container 13 through the aperture 29 and is guided to the interior of the container 13 by a fixed guide 39 and a guide bush 41 to be directed in tangential relationship and in contact with an inking roller 42. The ribbon 32 is then engaged by a pair of feed rollers which are generally indicated at 43 for the unidirectional feed movement and is re-introduced into the magazine 34.
The re-inking device 11 comprises a supply reservoir for the ink as indicated at 51 (see Figure 2), comprising a soft porous body of low density formed for example by a polyester felt pad and capable of containing the ink 50 by impregnation, and an ink metering means 52 comprising a porous but compacl body of high density and of reasonable rigidity, formed for example by a felt of wool which is treated with epoxy resin. The ink metering means 52 has a first portion into close contact with the supply reservoir 51 and a second portion in contact with the inking roller 42 for permitting capillary flow of the ink 50 from the reservoir 51 to the inking roller 42.
The reservoir for the ink or polyester felt pad 51 is protected from losing ink 50 by a casing formed by a closed cassette or box 53 which in turn is housed within ~he container 13 (see Figure 1). The box 53 comprises two recesses 54 and 56 for accommodating two positioning pins 57 and 58 which project from the bottom 14, within the container 13, for removably fixing the box 53 to the container 13, positioning it adjacent to a portion of the ribbon 32, the guide bush 41 and the inking roller 42, as is clearly visible in Figure 1. The box `53 comprises two internal blades 59 (see Figure 2) and 61 and two pins 62 and 63 arranged For positioning on the one hand the polyesler -Fell 51 and holding a part of the metering means 52 closely in contact against the polyester felt 51 by virtue of the compliance of the material. The box 53 is formed by a bottom 64 having the recesses 54 and 56 and a series of walls 66, 67, 68, 69, 71 (Fig.l) and 72, each having on the upper edge a recess 65, closed upwardly by a cover 73.
The box 53 is closed in known fashion, for example the cover 73 is ultrasonically welded to the recess 65 oF Ihe walls 66, 67, 68, 69, 71 and 72 arler the reservoir 51 and the melering means 52 have been positioned within the box 53. In addition Ihe box 53 comprises a lateral opening 74 (see Figure 2) to permit the metering means 52 to be passed therethrough and positioned therein. The opening 74 is of a predetermined shape of frustoconical section such as to reduce and slightly compress the part of the metering means 52 which is accommodated in the opening 74, in such a way as to prevent leakage of the ink 50 conlained in the reservoir 51, except for thal which passes by capillary flow along the fibres of the metering means 52.
The ink 50 is introduced into the box 53 after the box is sealingly closed, in per se known manner, for example using a syringe system for injecting a predetermined amount which is preset such as to be completely absorbed by the reservoir 51 and the metering means 52, by way of a small hole 75 provided in the wall 66. The internal blades 59 and 61 are spaced From the wall 66 in such a way as to form a space 80 which is kept at ambient pressure by virtue of the presence of the hole 75 and :apable oF ensuring a normal discharge flow of ink 50 by way Or ~ 1 33~5b~
Ihe metering means 52.
The pins 62 and 63 are spaced from the wall 68 to form a space 85 adjacent ot the aperture 74. The pins 62 and 63 of the box 53 and the opening 74 define a reference axis 70 for the metering means 52, which is substantially parallel to the wall 68.
The positioning pins 57 (see Figure 1) of the container 13 predetermine a position of the box 53 within the container 13 such ~hat Ihe axis 70 oF the metering means S2 is disposed alol~g a plane intermediate a reference plane tangential to the periphery and a plane passing through the axis of the inking roller 42, both parallel to the wall 68. The projecting portion of the metering means 52 is obliged to flex and bears against the outside surface of the teeth 76 of the inking roller 42. In addition the projecting portion of the metering means 52 tends to return to its original position due to the elastic resiliency of the materials of which it is composed and therefore applies a pressure in the region of contact with the outside surface of the teeth 76, which is sufficient to ensure that the ink passes on to the teeth 76.
The inking roller 42 is rotatable on a pin 77 which projects from the bottom 14, and has the tips of the teeth 76 of rounded section (see Figure 4) so as not to cause wear on the ribbon 32 and the portion of the metering means 52 (see Figure 1) which are held in contact with the teeth 76. Capillary flow of the ink 50 from the metering means 52 to the outside surFace oF the tee~h 76 and subsequently to the ribbon 32 therefore takes place in a smooth and reliable fashion.
The pair of feed rollers 43 comprise a toothed drive roller 78 which is always engaged with the inking roller 42 and a toothed driven roller 79. The drive and driven rollers 78 and 79 are each formed in one piece comprising three toothed wheels or gears which are spaced from each other by two sleeve portions 81 (see Figure 3) and 82.
`_ 1 334564 The drive roller 78 ;s rotatable between an opening 83 in the bottom 14 and an opening 84 in the cover 21 and can be connected in per se known manner for example to a drive shaft 86 which is substantially similàr to the drive shaft 66 shown in Figure 3 of US patent No. 4,010,839 when the cartridge 12 is mounted on a typewriter. The drive roller 78 is supported by a support 87 having two flanges 88 with semicylindrical seats 90 engaged with the two sleeve portions 81 and a pin 89 which is housed in a cylindrical seat 91 in the bottom 14. The drive roller 78 has a gripping portion 92 which projects from the cover 21 and which is capable of being manually rotated for manual feed of the inked roller 32.
The driven roller 79 is rotatable by means of the end portions 93 and 94 which are accommodated in respective slots 96 and 97 in Ihe botlom 14 and Ihe cover 21. The driven roller 79 is supported by a pressing support 98 having two flanges 99 with semicylindrical seats 100 engaged with the two sleeves 82 and a cylindrical pin 101 housed in a radial groove 102 in the bottom 14.
A leaf spring 103 has one end 104 (see Figure 1) received in a recess 105 in the container 13, with the other end 106 engaged with the pressing support 98 and an intermediate portion co-operating with a preloading member 107 of the container 13 for holding the driven toothed roller 79 constantly in rnesh ancl engaged with the drive toothed roller 78. The structure of the feed rollers 78 and 79 and the associated supports 87 and 98 as described hereinbefore is optimised to produce feed movement of the inked ribbon 32 without obstruction and jamming in per se known manner.
The cover 21 of the container 13 (see Figure 3) comprises ribs 108 capable of co-operating with the upper portions of the support 87, the pressing support 98 and the feed rollers 78 and 79 to prevent undesired movements of the various components when the cartridge 12 is not mounted on the typewriter.
The guide bush 41 (see Figure 1) is rotatable on a pin 109 on the bottom 14 of the container 13 and the inked ribbon 32 is engaged around the guide bush 41 to be directed towards the teeth 76 of the inking roller ~42 and subsequently towards the pair of feed rollers 43, following an inclined path of movement as shown in Figure 4.
The ink metering means 52 (see Figures 1 and 2) is of substantially parallelepipedic form and is of a height equal ~o the height of the inking roller 42, the guide bush 41 and ~he inked ribbon 32.
When the cartridge 12 is mounted on a typewriter, the drive shaft 86 rotates with the drive roller 78 and the driven roller 79 and the inked ribbon 32 is moved with a unidirectional feed movement. The projecting portion of the ink metering means 52 is always in contact with the teeth 76 of the inking roller 42 and the ink 50 thus flows from the ink reservoir 51 to the rounded external sur-race of the teeth 76. Since the inl<ing roller 42 is always engaged with the drive roller 78, rotary movement thereof causes rotary movement of the inking roller 42. The teeth 76 engage the inked ribbon 32 and the ink 50 deposited on the teeth 76 passes to the inked ribbon 32. That therefore provides for uniform and controlled re-inking of the inked ribbon 32.
It will be apparent therefore that the reservoir 51 and a part of the ink metering means 52 are housed in a closed box 53 having a single opening 74 for the ink metering means 52 to pass therethrough; the ink 50 cannot therefore escape from any part of the arrangement, except by way of the metering means 52. As the box 53 does not lose ink 50, it permits assembly of the ink reservoir 51 and the ink metering means 52, and loading of the ink 50 and subsequent storage of the box 53, as a unit which is separate and separable from the cartridge 12. In addition if the cartridge 12 is designed for that purpose, it is possible to replace an exhausted box by a fresh box.
It will be appreciated that the cartridge 12 for an inked ` - 1 334564 ribbon 32 with the re-inking device 11 may be the subject of modifications and improvements both in regard to the shape and Ihe arrangem~nt of Ihe vari--u~ componenls and parls withou~
departing from the scope of the invention.
Background of the Invention The present invention relates to a cartridge for an inked ribbon wilh a re-inking device, or Ihe Iype ~ornprising a container having a magazine for accommodating the ribbon and a pair of feed rollers for the feed movement of the ribbon, and in which the re-inking device comprises an ink reservoir and an ink metering means.
A cartridge of that type is known from U.S. Patent No.
4,071,133 wherein the ink metering means comprises a blade which is in contact with a feed roller in contact with the ribbon and which provides for the ribbon feed. The ink metering means is partially housed in an inking reservoir which in lurn is accommodaled in a rccess in the container; a spring urges Ihe entire inking reservoir, with its metering means, towards the feed roller. That re-inking device suffers from the disadvantage that the inking reservoir can allow the ink to be easily drawn out.
In addition the form of the feed roller which is subdivided into rings and the essential purpose of which is to engage the ribbon for the feed thereof is not suitable for providing for regular distribution of the ink over the ribbon to be re-inked.
Summary of the Invention The object of the present invention is therefore to provide a re-inking device for an inked ribbon in a cartridge, of low cost, which is simple, reliable and which at the same time permits uniform re-inking of the ribbon.
This object is met by the cartridge for an inked ribbon with a re-inking device according to the invention, comprising a casing for the reservoir for the ink and an inking roller engaged with the metering means for the capillary flow of the ink from the reservoir to the inking roller, and wherein the inking roller is toothed overall and is in engagement with a roller of the pair of rollers.
_ 1 _ In accordance with another aspect of the invention, the reservoir for the ink is disposed in a box accommodated within the container and provided with an aperture. The metering means for the ink has a first portion which is inserted into an aper~ure in ~he box and held in contac~ wi~h ~he rescrvoir and a second portion which is held in contact with an inking roller, for capillary flow of the ink from the reservoir to the inking roller and subsequently to the inked ribbon, and wherein the inking roller is engaged with one roller of the said pair of rollers to be driven in rotation by that roller.
Brief description of the Drawing A preferred embodiment of the present invention is set forth in the follnwing description which is given by way Or non-limiting example with reference to the accompanying drawing in which:
Figure 1 is a plan view of part of a cartridge with the re-inking device according to the invention, Figure 2 is a plan view of part of the re-inking device of Figure 1, on an enlarged scale, Figure 3 is a front view in section of part of some details from Figure 1, on an enlarged scale, and Figure 4 is a plan view of part of other datails of Figure 1, on an enlarged scale.
Description of the Preferred Embodiment Referring to Figure 1, the re-inking device which is generally indicated at 11 is applied by way of example to a cartridge 12 which, not being principal subject-matter of the present invention, is described only in respect of part thereof in order better to set forth the use of the re-inking device 11. In particular the cartridge 12 comprises a container 13 having a bottom 14 and a series oF internal walls 16, 17 and 18 such as to define a space 19. The container 13 is closed upwardly by a cover 21 and is delimited by a rear wall 22, a front wall 23, a right-hand side wall 24 and a left-hand side wall 26.
The cartridge 12 comprises, projecting from the rear wall 22, two arms 27 and 28 which are suitably shaped and which at their ends have two apertures 29 and 31 respectively for permitting a portion of an inked ribbon 32 to pass therethrough and be guided to the outside. The arms 27 and 28 are connected by a reinforcing rib 33. The inked ribbon 32 is of the closed loop type and is disposed in randomly distributed turns in a magazine 34 in the container 13.
The inked ribbon 32 issues from the magazine 34 and, guided by a fixed guide 36, is pinched between an internal wall 37 of the arm 28 and a resilient blade 38 to prevent a plurality of loops from escaping and to permit tensioning of the ribbon 32.
The ribbon 32 issues from the container 13 by way of the aperture 31, returns into the container 13 through the aperture 29 and is guided to the interior of the container 13 by a fixed guide 39 and a guide bush 41 to be directed in tangential relationship and in contact with an inking roller 42. The ribbon 32 is then engaged by a pair of feed rollers which are generally indicated at 43 for the unidirectional feed movement and is re-introduced into the magazine 34.
The re-inking device 11 comprises a supply reservoir for the ink as indicated at 51 (see Figure 2), comprising a soft porous body of low density formed for example by a polyester felt pad and capable of containing the ink 50 by impregnation, and an ink metering means 52 comprising a porous but compacl body of high density and of reasonable rigidity, formed for example by a felt of wool which is treated with epoxy resin. The ink metering means 52 has a first portion into close contact with the supply reservoir 51 and a second portion in contact with the inking roller 42 for permitting capillary flow of the ink 50 from the reservoir 51 to the inking roller 42.
The reservoir for the ink or polyester felt pad 51 is protected from losing ink 50 by a casing formed by a closed cassette or box 53 which in turn is housed within ~he container 13 (see Figure 1). The box 53 comprises two recesses 54 and 56 for accommodating two positioning pins 57 and 58 which project from the bottom 14, within the container 13, for removably fixing the box 53 to the container 13, positioning it adjacent to a portion of the ribbon 32, the guide bush 41 and the inking roller 42, as is clearly visible in Figure 1. The box `53 comprises two internal blades 59 (see Figure 2) and 61 and two pins 62 and 63 arranged For positioning on the one hand the polyesler -Fell 51 and holding a part of the metering means 52 closely in contact against the polyester felt 51 by virtue of the compliance of the material. The box 53 is formed by a bottom 64 having the recesses 54 and 56 and a series of walls 66, 67, 68, 69, 71 (Fig.l) and 72, each having on the upper edge a recess 65, closed upwardly by a cover 73.
The box 53 is closed in known fashion, for example the cover 73 is ultrasonically welded to the recess 65 oF Ihe walls 66, 67, 68, 69, 71 and 72 arler the reservoir 51 and the melering means 52 have been positioned within the box 53. In addition Ihe box 53 comprises a lateral opening 74 (see Figure 2) to permit the metering means 52 to be passed therethrough and positioned therein. The opening 74 is of a predetermined shape of frustoconical section such as to reduce and slightly compress the part of the metering means 52 which is accommodated in the opening 74, in such a way as to prevent leakage of the ink 50 conlained in the reservoir 51, except for thal which passes by capillary flow along the fibres of the metering means 52.
The ink 50 is introduced into the box 53 after the box is sealingly closed, in per se known manner, for example using a syringe system for injecting a predetermined amount which is preset such as to be completely absorbed by the reservoir 51 and the metering means 52, by way of a small hole 75 provided in the wall 66. The internal blades 59 and 61 are spaced From the wall 66 in such a way as to form a space 80 which is kept at ambient pressure by virtue of the presence of the hole 75 and :apable oF ensuring a normal discharge flow of ink 50 by way Or ~ 1 33~5b~
Ihe metering means 52.
The pins 62 and 63 are spaced from the wall 68 to form a space 85 adjacent ot the aperture 74. The pins 62 and 63 of the box 53 and the opening 74 define a reference axis 70 for the metering means 52, which is substantially parallel to the wall 68.
The positioning pins 57 (see Figure 1) of the container 13 predetermine a position of the box 53 within the container 13 such ~hat Ihe axis 70 oF the metering means S2 is disposed alol~g a plane intermediate a reference plane tangential to the periphery and a plane passing through the axis of the inking roller 42, both parallel to the wall 68. The projecting portion of the metering means 52 is obliged to flex and bears against the outside surface of the teeth 76 of the inking roller 42. In addition the projecting portion of the metering means 52 tends to return to its original position due to the elastic resiliency of the materials of which it is composed and therefore applies a pressure in the region of contact with the outside surface of the teeth 76, which is sufficient to ensure that the ink passes on to the teeth 76.
The inking roller 42 is rotatable on a pin 77 which projects from the bottom 14, and has the tips of the teeth 76 of rounded section (see Figure 4) so as not to cause wear on the ribbon 32 and the portion of the metering means 52 (see Figure 1) which are held in contact with the teeth 76. Capillary flow of the ink 50 from the metering means 52 to the outside surFace oF the tee~h 76 and subsequently to the ribbon 32 therefore takes place in a smooth and reliable fashion.
The pair of feed rollers 43 comprise a toothed drive roller 78 which is always engaged with the inking roller 42 and a toothed driven roller 79. The drive and driven rollers 78 and 79 are each formed in one piece comprising three toothed wheels or gears which are spaced from each other by two sleeve portions 81 (see Figure 3) and 82.
`_ 1 334564 The drive roller 78 ;s rotatable between an opening 83 in the bottom 14 and an opening 84 in the cover 21 and can be connected in per se known manner for example to a drive shaft 86 which is substantially similàr to the drive shaft 66 shown in Figure 3 of US patent No. 4,010,839 when the cartridge 12 is mounted on a typewriter. The drive roller 78 is supported by a support 87 having two flanges 88 with semicylindrical seats 90 engaged with the two sleeve portions 81 and a pin 89 which is housed in a cylindrical seat 91 in the bottom 14. The drive roller 78 has a gripping portion 92 which projects from the cover 21 and which is capable of being manually rotated for manual feed of the inked roller 32.
The driven roller 79 is rotatable by means of the end portions 93 and 94 which are accommodated in respective slots 96 and 97 in Ihe botlom 14 and Ihe cover 21. The driven roller 79 is supported by a pressing support 98 having two flanges 99 with semicylindrical seats 100 engaged with the two sleeves 82 and a cylindrical pin 101 housed in a radial groove 102 in the bottom 14.
A leaf spring 103 has one end 104 (see Figure 1) received in a recess 105 in the container 13, with the other end 106 engaged with the pressing support 98 and an intermediate portion co-operating with a preloading member 107 of the container 13 for holding the driven toothed roller 79 constantly in rnesh ancl engaged with the drive toothed roller 78. The structure of the feed rollers 78 and 79 and the associated supports 87 and 98 as described hereinbefore is optimised to produce feed movement of the inked ribbon 32 without obstruction and jamming in per se known manner.
The cover 21 of the container 13 (see Figure 3) comprises ribs 108 capable of co-operating with the upper portions of the support 87, the pressing support 98 and the feed rollers 78 and 79 to prevent undesired movements of the various components when the cartridge 12 is not mounted on the typewriter.
The guide bush 41 (see Figure 1) is rotatable on a pin 109 on the bottom 14 of the container 13 and the inked ribbon 32 is engaged around the guide bush 41 to be directed towards the teeth 76 of the inking roller ~42 and subsequently towards the pair of feed rollers 43, following an inclined path of movement as shown in Figure 4.
The ink metering means 52 (see Figures 1 and 2) is of substantially parallelepipedic form and is of a height equal ~o the height of the inking roller 42, the guide bush 41 and ~he inked ribbon 32.
When the cartridge 12 is mounted on a typewriter, the drive shaft 86 rotates with the drive roller 78 and the driven roller 79 and the inked ribbon 32 is moved with a unidirectional feed movement. The projecting portion of the ink metering means 52 is always in contact with the teeth 76 of the inking roller 42 and the ink 50 thus flows from the ink reservoir 51 to the rounded external sur-race of the teeth 76. Since the inl<ing roller 42 is always engaged with the drive roller 78, rotary movement thereof causes rotary movement of the inking roller 42. The teeth 76 engage the inked ribbon 32 and the ink 50 deposited on the teeth 76 passes to the inked ribbon 32. That therefore provides for uniform and controlled re-inking of the inked ribbon 32.
It will be apparent therefore that the reservoir 51 and a part of the ink metering means 52 are housed in a closed box 53 having a single opening 74 for the ink metering means 52 to pass therethrough; the ink 50 cannot therefore escape from any part of the arrangement, except by way of the metering means 52. As the box 53 does not lose ink 50, it permits assembly of the ink reservoir 51 and the ink metering means 52, and loading of the ink 50 and subsequent storage of the box 53, as a unit which is separate and separable from the cartridge 12. In addition if the cartridge 12 is designed for that purpose, it is possible to replace an exhausted box by a fresh box.
It will be appreciated that the cartridge 12 for an inked ` - 1 334564 ribbon 32 with the re-inking device 11 may be the subject of modifications and improvements both in regard to the shape and Ihe arrangem~nt of Ihe vari--u~ componenls and parls withou~
departing from the scope of the invention.
Claims (16)
1. A cartridge for an inked ribbon with a re-inking device, of the type comprising a container having a magazine for accommodating the ribbon and a pair of toothed rollers including a driving roller and a driven roller arranged for nipping the ribbon for feed movement of the ribbon, and in which the re-inking device comprises an ink reservoir for storing ink, a casing for the ink reservoir, and ink metering means in contact with said reservoir, wherein an inking roller is rotatably supported by said container at a location between said driving roller and said ink metering means and has peripheral teeth which are in engagement with the teeth of said driving roller to be driven in rotation by said driving roller, and in contact with said ink metering means;
wherein guide means projects into said container and engages a portion of said ribbon to direct said ribbon towards and into contact with the teeth of said inking roller and subsequently towards the teeth of said pair of toothed rollers, in a tangential relationship with said inking roller; and wherein the peripheral teeth of said inking roller are disposed on the entire peripheral surface of said inking roller and have rounded tips for substantially uniform capillary flow of the ink from said ink metering means to said inking roller and said inked ribbon.
wherein guide means projects into said container and engages a portion of said ribbon to direct said ribbon towards and into contact with the teeth of said inking roller and subsequently towards the teeth of said pair of toothed rollers, in a tangential relationship with said inking roller; and wherein the peripheral teeth of said inking roller are disposed on the entire peripheral surface of said inking roller and have rounded tips for substantially uniform capillary flow of the ink from said ink metering means to said inking roller and said inked ribbon.
2. A cartridge according to claim 1, wherein said casing is disposed within said container and comprises an aperture, and wherein said ink metering means is of elongated form and has a first portion inserted into said aperture and into close contact with said reservoir and a second portion which is held in contact with said inking roller.
3. A cartridge according to claim 2, wherein said reservoir for the ink comprises a porous, soft and low-density body formed by a polyester felt capable of containing ink and wherein said ink metering means comprises a porous, compact and elastic body of high density formed by a felt of wool which is treated with epoxy resin capable of permitting capillary flow of the ink from said reservoir to said inking roller.
4. A cartridge according to claim 3, wherein said aperture has a predetermined shape of decreasing section such as to reduce and slightly compress the portion of said ink metering means which is accommodated in said aperture and to prevent discharge of the ink contained in said reservoir, except for that which passes by way of said ink metering means.
5. A cartridge according to claim 1, wherein said casing comprises a bottom, a series of closed walls and a cover, and wherein said aperture is provided in a wall of said series of closed walls.
6. A cartridge according to claim 5, wherein said casing further comprises at least one internal portion projecting from the bottom and spaced apart from a wall of said series of closed walls in such a way as to form a space between said internal portion and said wall, and wherein said space is maintained at ambient pressure through a hole formed in said wall to guarantee a normal discharge flow of the ink by way of said ink metering means.
7. A cartridge according to claim 6, wherein said ink reservoir comprises a porous body impregnated with the ink and positioning means operative on said ink metering means for causing the contact of said first portion of said ink metering means with said porous body for capillary flow of the ink and to define a second space between said first portion of the ink metering means and a wall of said series of closed walls adjacent to said aperture.
8. A cartridge according to claim 2, wherein said second portion of the ink metering means bears in a flexed condition against the outside surface of said teeth of the inking roller and always remains in contact with said outside surface by virtue of the resilience of the material which make up said ink metering means.
9. A cartridge according to any of Claims 1 to 8, wherein resilient means are provided to urge said driven roller into engagement with said driving roller.
10. A cartridge according to Claim 1, including two pins projecting into the interior of said container, wherein said guide means comprise a guide bush rotatably mounted on a predetermined one of said pins and adjacent to said inking roller, wherein said inking roller is rotatably mounted on the other of said two pins, and wherein said inked ribbon is engaged around said guide bush.
11. A cartridge according to Claim 10, wherein said inked ribbon is of the closed loop type and is disposed in turns which are randomly distributed within said magazine and wherein said pair of rollers, said inking roller and said guide bush are disposed between said magazine and said casing.
12. A cartridge according to any one of Claims 1 to 8, 10 and 11, wherein said container comprises two positioning pins which project into the interior of the container and are capable of being accommodated in corresponding seats in said casing for removably fixing said casing to said container and for positioning said casing adjacent to said inking roller.
13. A cartridge according to Claim 2, wherein said container comprises two positioning pins which project into the interior of the container and are capable of being accommodated in corresponding seats in said casing for removably fixing said casing to said container and for positioning said casing adjacent to said inking roller, and wherein said two positioning pins position said casing in such a way that said aperture is disposed in a plane intermediate between two planes parallel to said intermediate plane and respectively tangential to the periphery and passing through the axis of said inking roller, whereby said second portion of said ink metering means, projecting from said casing, flexes and bears resiliently against said teeth of the inking roller.
14. A cartridge according to any one of Claims 1 to 8, 10, 11 and 13, wherein said container comprises a cover and a bottom, wherein said driving and driven rollers each comprises three toothed wheels which are spaced apart from each other by two sleeves which are fixed with respect to said three toothed wheels, wherein said driving roller is rotatable mounted between two openings in said bottom and said cover and is supported by a support having two flanges with semicylindrical seats, each engaged with a corresponding one of said sleeves, and a pin accommodated in a cylindrical seat in said bottom, and wherein said driven roller is supported by a pressing means having two flanges with semicylindrical seats each engaged with a corresponding one of said sleeves and a pin accommodated in a radial groove in said bottom.
15. A cartridge according to Claim 14, wherein resilient means are provided to urge said driven roller into engagement with said driving roller, and wherein said resilient means comprises a leaf spring having a first end portion accommodated in a seat of said container, and a second end portion engaged with said pressing means and an intermediate portion engaged with a pre-loading element of said container.
16. A cartridge according to any one of Claims 1 to 8, 10, 11, 13 and 15, wherein said inking roller, said ink metering means and said inked ribbon are of the same height and wherein said ink metering means is of substantially parallelepipedic shape.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT67872A/87 | 1987-10-20 | ||
| IT8767872A IT1211410B (en) | 1987-10-20 | 1987-10-20 | CARTRIDGE FOR AN INK TAPE WITH REINK INK DEVICE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1334564C true CA1334564C (en) | 1995-02-28 |
Family
ID=11305973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000579581A Expired - Fee Related CA1334564C (en) | 1987-10-20 | 1988-10-07 | Cartridge for an inked ribbon with a re-inking device |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0313245B1 (en) |
| AT (1) | ATE84259T1 (en) |
| CA (1) | CA1334564C (en) |
| DE (1) | DE3877319T2 (en) |
| ES (1) | ES2038306T3 (en) |
| IT (1) | IT1211410B (en) |
| ZA (1) | ZA887793B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5005996A (en) * | 1989-09-15 | 1991-04-09 | International Business Machines Corporation | Ribbon cartridge with endless ribbon reinking mechanism |
| IT218846Z2 (en) * | 1989-11-16 | 1992-11-05 | Incas Holding Spa | NOTARBARTOLO & GERVASI |
| IT1266013B1 (en) * | 1994-05-26 | 1996-12-16 | Baltea Spa | DEVICE FOR THE ADVANCE OF A WRITING TAPE. |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4091914A (en) * | 1977-02-22 | 1978-05-30 | Porelon, Inc. | Wear-activated ribbon reinker |
| JPS6044384A (en) * | 1983-08-22 | 1985-03-09 | エヌ・シー・アール・コーポレーション | Ribbon-cartridge with ink feeding mechanism |
| DE3535876A1 (en) * | 1985-10-08 | 1987-04-09 | Turbon International | Ink-ribbon cassette for inserted endless ink ribbons |
| IT1187942B (en) * | 1986-02-28 | 1987-12-23 | Olivetti & Co Spa | CARTRIDGES FOR INKED TAPE WITH REINKING DEVICE |
| US4653947A (en) * | 1986-03-05 | 1987-03-31 | Echodata Corporation | Reinking device for ribbon cartridge |
-
1987
- 1987-10-20 IT IT8767872A patent/IT1211410B/en active
-
1988
- 1988-10-07 CA CA000579581A patent/CA1334564C/en not_active Expired - Fee Related
- 1988-10-10 AT AT88309443T patent/ATE84259T1/en not_active IP Right Cessation
- 1988-10-10 ES ES198888309443T patent/ES2038306T3/en not_active Expired - Lifetime
- 1988-10-10 EP EP88309443A patent/EP0313245B1/en not_active Expired - Lifetime
- 1988-10-10 DE DE8888309443T patent/DE3877319T2/en not_active Expired - Lifetime
- 1988-10-19 ZA ZA887793A patent/ZA887793B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP0313245A3 (en) | 1989-08-30 |
| ZA887793B (en) | 1989-07-26 |
| ATE84259T1 (en) | 1993-01-15 |
| DE3877319D1 (en) | 1993-02-18 |
| IT8767872A0 (en) | 1987-10-20 |
| DE3877319T2 (en) | 1993-07-22 |
| EP0313245B1 (en) | 1993-01-07 |
| EP0313245A2 (en) | 1989-04-26 |
| ES2038306T3 (en) | 1993-07-16 |
| IT1211410B (en) | 1989-10-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |