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
  • B41J35/00—Other apparatus or arrangements associated with, or incorporated in, ink-ribbon mechanisms
  • B41J35/04—Ink-ribbon guides
  • B41J35/06—Ink-ribbon guides stationary

Definitions

• the invention relates to an ink ribbon guide part for electronic printers, in particular a dot matrix printer, which contains the ink ribbon guide for the printer.
• a bar cassette consists of a cassette part and an ink ribbon guide part.
• the cassette part is used to hold the ribbon and a drive unit for transporting the ribbon.
• the ribbon guide part serves as a ribbon guide in the area of the print head. However, depending on the type of printer, complicated tape guidance is required here.
• a functional requirement is that after the ribbon guide has been put on, the ribbon is guided closely around the printhead nozzle. So far, the ribbon has been pushed into the basic position when the ribbon guide is placed over a slope on the print head. This can cause the ribbon to move, causing the ribbon to fold or kink. There are very high failure rates because a kinked or twisted ribbon is not immediately recognized optically. As a check or as an aid to insertion, the ink ribbon in the area of the head mouthpiece must be smoothed out with a tool.
• the object of the present invention is to provide an ink ribbon guide part by which the ribbon is prevented from kinking or twisting.
• the ribbon guide part according to the invention is designed in such a way that it additionally has a ribbon deflector which consists of a rotatably mounted, spring-loaded part with two symmetrically arranged sliders, over which the ribbon runs so that it runs in front of the Pushing onto the printhead carrier is spread apart from the printhead nozzle, the spring-loaded part tipping backwards when pushed onto the printhead carrier and thereby displacing the slider into the rest position, so that the ink ribbon lies directly against the printhead nozzle.
• a ribbon deflector which consists of a rotatably mounted, spring-loaded part with two symmetrically arranged sliders, over which the ribbon runs so that it runs in front of the Pushing onto the printhead carrier is spread apart from the printhead nozzle, the spring-loaded part tipping backwards when pushed onto the printhead carrier and thereby displacing the slider into the rest position, so that the ink ribbon lies directly against the printhead nozzle.
• FIGS. 1 to 8. The invention is explained in more detail with reference to FIGS. 1 to 8. It shows
• FIG. 1 shows a partial view of a printer with a bar cassette, ribbon guide part and ribbon deflector in the spread state
• FIG. 2 shows a detailed image of a printer with a bar cassette, ribbon guide part and ribbon deflector in the retracted state
• FIG. 3 the ribbon guide in top view
• FIG. 4 the ribbon deflector in a side view
• FIG. 5 shows a section V / V through the ribbon deflector
• FIG. 6 shows a spring for suspension of the ribbon deflector
• Figure 7 is a front view of the ribbon guide member
• Figure 8 is a side view of the ribbon guide member.
• FIG. 1 shows a section of a printer with the bar cassette 9, the printhead support 13, the ribbon guide part 8 and the printhead 5.
• the ink ribbon 3 is fed to the ribbon guide part 8 from the bar cassette 9, where it is guided past the printhead nozzle 4 via a plurality of guide elements and arrives on the other side of the ribbon guide part 8 again at the exit and from there back to the bar cassette 9.
• the ribbon deflector 1 which consists of a rotatably mounted, spring-loaded part with two symmetrically arranged sliders 2, spreads the ribbon away from the ribbon guide so that the ink ribbon 3 is held at a distance from the print head nozzle 4 before it is put on.
• the ink ribbon deflector 1 which is designed as a resilient and rotatably mounted part, is tilted backwards and thereby the slide 2 is put into the rest position, so that the ink ribbon 3 now lies directly against the print head nozzle 4, as shown in FIG.
• Figures 3 to 5 show the ribbon deflector in detail.
• the two sliders 2 are visible, which are rotatable on the part 12 via the part 10 is stored, are connected.
• the part 10 is rounded on both sides, the pressure point 11, as shown in FIG. 5, being at the upper end of the part.
• the design of the suspension is shown in FIG. 6.
• the spring arms are bent in the shape of a hook, and the upper bearing point 13 of the spring is spherical.
• the ribbon guide member is shown again in detail in front view, while Figure 8 shows the side view.
• the ribbon guide part 8 is removed from the print head carrier 13
• the ribbon is lifted from the front surface of the print head mouthpiece 4 by the slide 2 on the ribbon deflector 1 being extended.
• This ribbon deflector 1 can also be used with other cassettes, e.g. Mitfahrkas ⁇ set used successfully.

Landscapes

• Impression-Transfer Materials And Handling Thereof (AREA)
• Printers Characterized By Their Purpose (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6890893

Family Applications (1)

Country Status (5)

Cited By (1)

Citations (3)

• 1993
  • 1993-03-19 DE DE9304113U patent/DE9304113U1/de not_active Expired - Lifetime
• 1994
  • 1994-03-01 DE DE59401544T patent/DE59401544D1/de not_active Expired - Lifetime
  • 1994-03-01 JP JP6520498A patent/JPH08507981A/ja active Pending
  • 1994-03-01 ES ES94908944T patent/ES2096457T3/es not_active Expired - Lifetime
  • 1994-03-01 EP EP94908944A patent/EP0689506B1/de not_active Expired - Lifetime
  • 1994-03-01 WO PCT/DE1994/000222 patent/WO1994021467A1/de active IP Right Grant

Patent Citations (3)

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