JPH0214443Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field of the Invention This invention relates to a ribbon guide holding device for a printer.

Technical background of the invention and its problems Conventionally, a cassette case is provided to store an endless ribbon, a ribbon guide is hooked onto the ribbon pulled out from the cassette case, and the cassette case is attached to the printer for printing. Sometimes, a ribbon guide is attached to the tip of the print head, and the ribbon is slid from the ribbon guide in front of the platen. However, when the cassette case is removed from the printer, the ribbon guide is unstable, causing the ribbon to become twisted or slack, and when the cassette case is attached to the printer, the ribbon must be manually corrected. Therefore, there is a problem in that preparation requires time and effort and hands become dirty.

Purpose of the invention This invention was made in view of the above-mentioned points, and the object is to provide a ribbon guide holding device for a printer that can prevent the ribbon from twisting or loosening.

Summary of the invention This invention uses a horizontally elongated guide provided in the cassette case to hold the ribbon when it is pulled out from the cassette case. To prevent loosening and unnatural twisting, when in use the cassette case is attached to the printer and the ribbon guide is attached to the carrier or print head at this time, but there is no need to correct twisting or loosening of the ribbon at this time, so it is easy to set up. It is designed to facilitate work and prevent hands from getting dirty.

Examples of ideas An embodiment of this invention will be explained based on the drawings.

Reference numeral 1 denotes a cassette case, and an endless ribbon 2 is folded and stored inside the cassette case 1, and a part of the ribbon 2 is pulled out from a hole 4 formed in the left and right arms 3. Further, on one side of the upper surface of the cassette case 1, a knob 6 is provided that projects from the drive roller 5, and a shaft 8 for holding a driven roller 7 is provided so as to be movable and biased towards the drive roller 5. Further, on the front side of the ribbon guide 9, there is an opening 1 facing the tip of the print head 10.
1 and a guide piece 12 that slidably holds the ribbon 2 in front of the platen 13. Arms 14 are integrally formed on both sides of the ribbon guide 9, and these arms 14 have pins 16 which are holding portions erected on both sides of the carrier 15.
A projecting piece 18 having a mounting hole 17 that is detachably held in the arm 14 is formed, and a circular notch 19 with a small mouth and a large inside is formed at the end of these arms 14.
is formed. A print head 10 is mounted on the carrier 15. A horizontally long rib 20 is formed on the front surface of the cassette case 1, and a guide 21 having a circular cross section that is substantially smaller than the cross section of the notch 19 is integrally formed at the edge of the rib 20. Both ends of these ribs 20 and guides 21 are formed continuously on the arm 3. The carrier 15 is slidably held by guide shafts 22 and 23.

In such a configuration, since the ribbon guide 9 is held by the guide 21, the cassette case 1
The ribbon 2 is stable without falling off, and as a result, the ribbon 2 does not become loose or unnaturally twisted. Even the slightest slack can be adjusted by turning knob 6. Therefore, when the cassette case 1 is installed in a printer, there is no need to manually correct twisting or loosening of the ribbon 2, which saves time and effort in setup work and prevents hands from getting dirty. Ribbon guide 9 mounting hole 1
When the ribbon guide 9 is fitted to the pin 16 of the carrier 15, the ribbon guide 9 is fixed without moving relative to the carrier 15, but there is some play between the guide 21 and the rib 20 and the notch 19. ,
The movement of the carrier 15 is not restricted by the guide 21 and becomes unsmooth. The guide 21 is integrally formed with the cassette case 1 from plastic, but because it is reinforced by the ribs 20, it does not warp and the ribbon guide 9 can move smoothly.

Effects of the invention Since this invention is constructed as described above, the ribbon guide can be held by the guide formed in the cassette case to prevent unnatural twisting or loosening of the ribbon, and this makes it possible to attach the cassette case to the printer. This has the advantage of eliminating the need to sometimes correct twists and slack in the ribbon, and preventing soiling of hands.

[Brief explanation of drawings]

The drawing shows one embodiment of this invention.
2 is a plan view, FIG. 2 is a perspective view, and FIG. 3 is a partially cutaway exploded view showing the engaged state of the ribbon guide and the guide of the cassette case. 1...cassette case, 2...ribbon, 4...
Port, 9... Ribbon guide, 10... Print head, 15... Carrier, 16... Pin (holding part),
21...Guide.

Claims (1)

[Scope of utility model registration request] A cassette case is provided in which an endless ribbon is folded and stored, and a port is formed on the side for pulling out the ribbon. A ribbon guide is provided to slidably hold the ribbon pulled out from the port, and extends parallel to the platen. The moving carrier or printing head is provided with a holding part for detachably holding the ribbon guide, and the cassette case is provided with a horizontally long guide for holding the ribbon guide slidably in parallel with the platen. Printer ribbon guide holding device.