WO2002000439A1 - Druckermodul mit einem nadeldruckkopf - Google Patents
Druckermodul mit einem nadeldruckkopf Download PDFInfo
- Publication number
- WO2002000439A1 WO2002000439A1 PCT/EP2001/007163 EP0107163W WO0200439A1 WO 2002000439 A1 WO2002000439 A1 WO 2002000439A1 EP 0107163 W EP0107163 W EP 0107163W WO 0200439 A1 WO0200439 A1 WO 0200439A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- printer module
- module according
- carrier
- printhead
- guide
- Prior art date
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
- B41J25/00—Actions or mechanisms not otherwise provided for
- B41J25/001—Mechanisms for bodily moving print heads or carriages parallel to the paper surface
- B41J25/006—Mechanisms for bodily moving print heads or carriages parallel to the paper surface for oscillating, e.g. page-width print heads provided with counter-balancing means or shock absorbers
-
- 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
-
- 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
- B41J33/00—Apparatus or arrangements for feeding ink ribbons or like character-size impression-transfer material
- B41J33/02—Ribbon arrangements
- B41J33/06—Ribbons associated, but not moving, with typewriter platens, e.g. extending transversely to the length of the platen
-
- 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
- B41J33/00—Apparatus or arrangements for feeding ink ribbons or like character-size impression-transfer material
- B41J33/14—Ribbon-feed devices or mechanisms
- B41J33/16—Ribbon-feed devices or mechanisms with drive applied to spool or spool spindle
Definitions
- the invention relates to a printer module according to the preamble of claim 1.
- a printer module of this type does not have to carry a record carrier. It can therefore be used to set up a wide variety of printers adapted to special tasks, for example printers in writing devices, for printing receipts and journal rolls in cash registers or for printing bank receipts in automated teller machines.
- the printing width of the entire printer module changes according to its purpose. In all applications, a very high printing speed is aimed for. On the one hand, this requires a correspondingly powerful print head and, on the other hand, a strong carrier motor in order to be able to move the print head back and forth accordingly quickly and uniformly.
- a printing device is known from US Pat. No. 3,726,381 with a needle printhead which is arranged on a printhead carrier which in turn can be pushed back and forth on two parallel guide rods.
- the printhead carrier is driven by a carrier motor and a tension member which can be driven by it and which acts on a section of the printhead carrier located between the guide rods.
- the invention has for its object to provide a printer module of the type mentioned, in which a high printing speed, a uniform print image and low wear can be achieved with inexpensive means.
- the measures provided according to the invention ensure that the print head carrier can be accelerated and moved practically without tilting with the print head arranged eccentrically on it. This results in a very uniform movement of the print head carrier and the print head, which ensures a higher working speed with high print quality and less wear on the guide rods and the bearings of the print head carrier. The low wear in turn ensures that the high print quality is maintained over a longer period of time than with conventional printers.
- printers of the type mentioned at the outset are designed specifically for the applications mentioned above, since the printing width differs according to the respective application.
- the manufacturers therefore have a large number of printers ready for the various applications. This increases the effort for the production of the printer and the storage.
- This disadvantage is in a printer module of the ge above mentioned type eliminated in that the chassis has a longitudinal beam and two transverse walls directed perpendicular to its longitudinal direction, on which the guide rods directed parallel to the longitudinal direction of the longitudinal beam are held.
- the longitudinal beam can be rigidly connected to one of the transverse walls, preferably in one piece, while the other transverse wall is preferably detachably connected, for example screwed, to the longitudinal beam.
- the design of the chassis according to the invention makes it possible to vary the printing width of the printer module in a very simple manner. All that is required is to select the length of the side member and the guide rods accordingly. This is easy to do in terms of manufacturing technology. All other parts of the printer, including most of the mounting holes and openings on the chassis, remain virtually unchanged. As a result, the same parts and assembly devices can largely be used for printer modules with different printing widths.
- the carrier motor is at one end of the .
- a deflection roller for the tension member is mounted on the transverse wall at the other end of the longitudinal beam.
- the tension member for example a toothed belt, can be tensioned in a simple manner by adjusting the position of the carrier motor on the longitudinal beam.
- the carrier motor is preferably arranged at the end of the longitudinal beam, which is rigidly connected to a transverse wall. This area of the chassis has the highest rigidity and remains unchanged regardless of the length of the side member, so that the best mounting options are available for the relatively heavy support motor.
- the ribbon drive preferably has a drive shaft which can be detachably coupled to the internal ribbon transport of a ribbon cassette and which is coupled to the deflection roller for the tension member via a reversing gear.
- a reduction in the parts of the reversing gear can be achieved in that it has a swivel support, which is mounted coaxially to the deflecting roller and has two arms, on each of which idler gears which are constantly connected to the deflecting roller and which are dependent on the direction of rotation of the deflecting roller are mounted Pivoting movement of the swivel carrier can optionally be coupled to the drive shaft of the ribbon drive.
- the length of the working section of the ink ribbon usually corresponds to the printing width of the printer, ie the travel of the print head in the printer. For printers with different print widths, ribbon cartridges of different widths must therefore be kept ready.
- the ribbon guide arms are adjustable parallel to the longitudinal direction of the working section of the ribbon. As a result, the length of the working section can be adjusted to the printing width of the respective printer. So you only need one ' ribbon cartridge type for printers of different print widths.
- the band guide arm closest to the outlet opening of the storage chamber is preferably adjustable. Since the transport mechanism for the ribbon in ribbon cartridges of this type is usually arranged directly in front of the inlet opening of the storage chamber, the position of the transport mechanism within the cartridge housing is not affected by the adjustability of the ribbon guide arm in this embodiment of the ribbon cartridge. This means that the position of the drive shaft for the transport mechanism in the printer need not be changed.
- the adjustable band guide arm is preferably arranged on a frame part which is guided displaceably in the housing.
- the frame part can have a crossbar forming a housing side wall and the guide arm and two slide rails perpendicular to the latter, which are displaceably guided in complementary guide grooves of the housing.
- the frame part can expediently be locked in relation to the housing in predetermined positions which correspond, for example, to the customary paper formats to which the printing widths of the printers are also set.
- the frame part on the housing to the Sliding rails and the walls of the guide grooves for mutual engagement with certain locking means are provided, which include, for example, recesses in one part (slide rail, groove wall) and at least one projection on the other part (groove wall, slide rail).
- certain locking means include, for example, recesses in one part (slide rail, groove wall) and at least one projection on the other part (groove wall, slide rail).
- the elastic deflection of the parts intended for engagement with one another which is necessary for engaging and disengaging, is often already given due to the inherent elasticity of the housing material (usually plastic) and the play of the housing parts guided into one another. If this should not be sufficient or a more secure latching is desired, the projection can, for example, be formed on a tongue which can be deflected in a springy manner.
- FIG. 1 shows a perspective view of the front of a printing module according to the invention
- FIG. 2 shows a perspective view of the rear of the printing module according to the invention
- FIG. 3 shows a perspective view of the print module according to the invention with the print head positioned vertically
- FIG. 4 shows a schematic top view of the ribbon drive
- 5 shows a perspective top view of an opened ribbon cassette in a first position of the adjustable ribbon guide arm
- FIG. 6 shows a view corresponding to FIG
- Ribbon cassette in a second position of the ⁇ adjustable ribbon guide arm.
- the printer module shown in FIGS. 1 to 3 comprises a chassis, generally designated 10, which essentially consists of a longitudinal beam 12, a first transverse wall 14, a second transverse wall 16 and a longitudinal wall 18 directed parallel to the longitudinal beam 12.
- the longitudinal beam 12 consists of an angular profile with a first leg 20 parallel to the longitudinal wall 18 and a second leg 22 oriented at right angles to the latter.
- the first transverse wall 14 is formed in one piece with the side member 12.
- the longitudinal member 12 is stamped together with the transverse wall 14 from sheet steel and bent into the shape shown.
- the second transverse wall 16 is connected to the longitudinal beam 12 and the longitudinal wall 18 via screws 24.
- the ribbon drive will be discussed in more detail below.
- Two guide rods 32 and 34 extend parallel to the longitudinal beam 12 between the transverse walls 14 and 16 to which a printhead carrier, generally designated 36, is slidably mounted, on which a needle printhead, generally designated 38, is mounted.
- a drive motor 40 which is fastened to the longitudinal beam 12 and projects with its shaft 42 through an opening 44 in the second leg 22 of the longitudinal beam 12, serves to move the print head carrier 36 and thus the print head 38 back and forth.
- the shaft 42 of the drive motor 40 carries a pinion 46 which drives a tension member 48 in the form of a toothed belt.
- the toothed belt 48 is guided at the end of the longitudinal beam 12 remote from the drive motor 40 via a deflection roller 50, which is mounted with a shaft 52 in tabs 54 bent from the material of the transverse wall 16.
- the toothed belt 48 is fixedly connected to a section of the print head carrier 36 lying between the guide rods 32 and 34.
- the toothed belt 48 can be tensioned by moving the drive motor 40 in the longitudinal direction of the side member 12.
- An encoder disk 56 is connected to the shaft 52 of the deflection roller 50 and, in conjunction with a light barrier (not shown), enables detection of the movement of the print head carrier 36.
- the printhead 38 is attached to the printhead support 36 laterally outside the guideway formed by the guide rods 32 and 34.
- a tilting moment arises on the print head carrier 36, which leads to increased friction in the bearing of the print head carrier on the guide rod 34.
- a broken line in FIG. Drawn balance weight 58 arranged, which ensures that both bearings of the printhead support 36 are loaded approximately the same.
- FIG. 2 shows two plug contact strips 60 and 62 which are connected to the leg 20 of the longitudinal beam 12 in order to connect the print head on the one hand and the drive motor 40 and the encoder 56 on the other hand to a power supply and control unit (not shown).
- the drive shaft 28 of the ribbon drive is driven via a worm 64, a worm gear 66 and a reversing gear, generally designated 68, from a gear 70 seated on the shaft 52.
- the reversing gear 68 comprises a swivel support 72 which is freely rotatably mounted on the shaft 52 and has two arms 74, 76 which project radially at an angle and on which intermediate gears 78 which are permanently engaged with the gearwheel 70 are mounted.
- the ribbon cassette shown in FIGS. 5 and 6 comprises a flat cuboid housing, generally designated 80, with a bottom 82, longitudinal walls 84 and 86 and transverse walls 88 and 90.
- a cover surface which closes the cassette cavity is removed in the figures for the sake of insight to grant in the cassette cavity.
- the cassette cavity has a storage chamber 92 in which an endless ribbon 94 is stored in loops. On the exit side, separated by an intermediate wall 96 from the storage chamber 92, there is a space 98 into which the ink ribbon 94 passes through an exit gap 100 and in which it is turned before it leaves the cassette cavity through a second exit gap 102.
- a transport mechanism 106 is located in a chamber 104 upstream of the storage chamber 92 in the tape running direction in order to pull the ink ribbon 94 out of the storage chamber 92 through the outlet gap 100 and to push it back into the storage chamber 92 through an entry gap 107.
- the transport mechanism 106 consists of two intermeshing gear wheels 108, 110, of which the gear wheel 108 can be coupled to a drive shaft of a printer, not shown.
- the side or transverse walls 88, 90 of the cassette housing 80 are extended by ribbon guide arms 112, 114, each of which has a ribbon guide channel 116 through which the ribbon 94 extends, so that the ribbon 94 is underneath between the free ends of the ribbon guide arms 112 and 114 Formation of a working section 118 running parallel to the longitudinal wall 84 is stretched.
- the length of the guide arms 112 and 114 i.e. the distance between the longitudinal wall 84 of the housing and the working section 118 of the ink ribbon 94 is such that the printhead of the printer can move in this space.
- the length of the working section 118 corresponds to the printing width of the printer.
- the ribbon guide arm 114 is adjustable according to the invention compared to the rest of the cassette housing 80.
- the transverse wall 80 and the band guide arm 114 are connected to two slide rails 120 directed perpendicular to them, which are slidably guided in guide grooves 122, which are formed in the longitudinal walls 84 and 86 of the housing 80.
- the transverse wall 90, the band guide arm 114 and the slide rails 120 together form a frame part 123, which as a whole can be pulled out of the housing 80 in the direction of the double arrow A (FIG.
- the housing parts of the ribbon cassette can be injection molded inexpensively from plastic in a manner known per se.
- the possibly slightly higher costs for the production and assembly of the ribbon housing from two parts are more than compensated for by the savings which result from the fact that only one type of cassette has to be manufactured and stored.
Landscapes
- Impression-Transfer Materials And Handling Thereof (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01965031A EP1294567B1 (de) | 2000-06-26 | 2001-06-25 | Druckermodul mit einem nadeldruckkopf |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10031114.8 | 2000-06-26 | ||
DE10031112 | 2000-06-26 | ||
DE10031114 | 2000-06-26 | ||
DE10031112.1 | 2000-06-26 | ||
DE10031817.7 | 2000-06-30 | ||
DE2000131817 DE10031817C1 (de) | 2000-06-30 | 2000-06-30 | Druckermodul mit einem Nadeldruckkopf |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002000439A1 true WO2002000439A1 (de) | 2002-01-03 |
WO2002000439A9 WO2002000439A9 (de) | 2002-09-19 |
Family
ID=27213931
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/007163 WO2002000439A1 (de) | 2000-06-26 | 2001-06-25 | Druckermodul mit einem nadeldruckkopf |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1294567B1 (de) |
WO (1) | WO2002000439A1 (de) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3726381A (en) | 1971-03-03 | 1973-04-10 | Mohawk Data Sciences Corp | Printer ribbon feed |
DE3138111A1 (de) * | 1981-09-24 | 1983-04-14 | Siemens AG, 1000 Berlin und 8000 München | Kassette fuer gewebefarbbaender zur gestellfesten anbringung in druckern |
JPS61227083A (ja) * | 1985-04-02 | 1986-10-09 | Fujitsu Ltd | プリンタ |
JPH0351172A (ja) * | 1989-07-20 | 1991-03-05 | Fujitsu General Ltd | 熱転写式プリンタ |
DE69423406T2 (de) | 1993-09-20 | 2000-11-23 | Seiko Epson Corp., Tokio/Tokyo | Einrichtung für den Anschluss eines Schlittens |
-
2001
- 2001-06-25 WO PCT/EP2001/007163 patent/WO2002000439A1/de active IP Right Grant
- 2001-06-25 EP EP01965031A patent/EP1294567B1/de not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3726381A (en) | 1971-03-03 | 1973-04-10 | Mohawk Data Sciences Corp | Printer ribbon feed |
DE3138111A1 (de) * | 1981-09-24 | 1983-04-14 | Siemens AG, 1000 Berlin und 8000 München | Kassette fuer gewebefarbbaender zur gestellfesten anbringung in druckern |
JPS61227083A (ja) * | 1985-04-02 | 1986-10-09 | Fujitsu Ltd | プリンタ |
JPH0351172A (ja) * | 1989-07-20 | 1991-03-05 | Fujitsu General Ltd | 熱転写式プリンタ |
DE69423406T2 (de) | 1993-09-20 | 2000-11-23 | Seiko Epson Corp., Tokio/Tokyo | Einrichtung für den Anschluss eines Schlittens |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 011, no. 071 (M - 567) 4 March 1987 (1987-03-04) * |
PATENT ABSTRACTS OF JAPAN vol. 015, no. 194 (M - 1114) 20 May 1991 (1991-05-20) * |
Also Published As
Publication number | Publication date |
---|---|
EP1294567A1 (de) | 2003-03-26 |
EP1294567B1 (de) | 2007-03-07 |
WO2002000439A9 (de) | 2002-09-19 |
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