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KR-102951874-B1 - THERMAL TRANSFER PRINTER HAVING GUIDE TYPE SWING LEVER

KR102951874B1KR 102951874 B1KR102951874 B1KR 102951874B1KR-102951874-B1

Abstract

The present invention relates to a thermal transfer printing device equipped with a guide swing lever, and in particular, to a thermal transfer printing device equipped with a guide swing lever that enables stable operation by providing a rotation guide supported on the inner wall of a frame to the swing lever, which rotates so that the swing gear engages with the reel gear.

Inventors

  • 정구범

Assignees

  • 디에스글로벌(주)

Dates

Publication Date
20260508
Application Date
20201127

Claims (7)

  1. In a thermal transfer printing device in which a cartridge (300) for supplying an ink ribbon (10) and printing paper (20) is coupled to a frame (FR) equipped with a driving engine (400), A reel gear (331) provided at the shaft end of a winding reel (330) that winds the ink ribbon (10); A feed gear (451) provided at the shaft end of a feed roller (450) that transports the printing paper (20) and is spaced a certain distance rearward from the reel gear (331); A swing gear (470) engaged with the feed gear (451) between the reel gear (331) and the feed gear (451); A swing lever (490) having the feed roller (450) axially coupled to one side and the swing gear (470) axially coupled to the other side, wherein the swing gear (470) rotates around the axis of the feed roller (450) to engage with the reel gear (331); and It includes a rotation guide (491) which is provided on the swing lever (490) and is formed to protrude toward the outer direction of the swing lever (490), thereby being supported by contacting the inner surface of the frame (FR) when rotating. It further includes an auxiliary guide (493) which is provided on the swing lever (490) and is formed to protrude toward the inner direction of the swing lever (490), thereby contacting and supporting a component constituting the engine (400) when rotated. A platen roller (440) spaced apart from the rear side of the feed roller (450) and raising the ink ribbon (10) and printing paper (20) to come into contact with the thermal transfer head (TPH); and A link member (480) disposed on the inner side of the swing lever (490), wherein the platen roller (440) is axially coupled to one side and the feed roller (450) is axially coupled to the other side; further comprising A thermal transfer printing device equipped with a guide swing lever, characterized in that the auxiliary guide (493) is formed to protrude inwardly so as to be supported by contacting the outer surface of the link member (480).
  2. In paragraph 1, The above swing lever (490) is, lever body (490a) and; A first coupling part (490b) formed at the lower part of the lever body (490a) and to which the feed roller (450) is axially coupled; and A thermal transfer printing device having a guide swing lever, characterized by including: a second coupling part (490c) formed at an eccentric position toward the front side from the upper part of the first coupling part (490b) of the lever body (490a), to which the swing gear (470) is axially coupled.
  3. In paragraph 2, The above rotation guide (491) is, A thermal transfer printing device having a guide swing lever, characterized by being provided at an eccentric position toward the front side from the upper part of the second coupling part (490c).
  4. In paragraph 3, In the above rotation guide (491), A thermal transfer printing device equipped with a guide swing lever characterized by having a plurality of fine protrusions with a rounded surface formed on a support surface that contacts the above-mentioned frame (FR).
  5. In paragraph 3, A thermal transfer printing device having a guide swing lever, characterized by further including a stopper (492) which is provided at the lower part of the first coupling part (490b) and installed within a locking part formed in the frame (FR), wherein one end or the other end is caught in the locking part according to the swing operation of the swing lever (490) to limit the swing angle to within a set range.
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Description

Thermal transfer printer having a guide type swing lever The present invention relates to a thermal transfer printing device equipped with a guide swing lever, and more specifically, to a thermal transfer printing device equipped with a guide swing lever that enables stable operation by providing a rotation guide supported on the inner wall of a frame to the swing lever, which rotates so that the swing gear engages with the reel gear. With the recent proliferation of various wireless communication devices equipped with camera and computing functions, including smartphones, tablet PCs, and notepads, people are taking photos or receiving app services using these devices. For this reason, thermal transfer printing devices that are linked with wireless communication terminals to instantly print photos taken by the terminals or provide various printed materials as part of terminal application services are becoming widespread. Thermal transfer printing devices use a method in which heat is applied to an ink ribbon using a Thermal Print Head (TPH) to transfer ink, such as dye or pigment coated on the ribbon, onto printing paper. FIG. 1 illustrates a conventional thermal transfer printing device as an example. As illustrated, the thermal transfer printing device (200) is configured so that a cartridge (100) is inserted from the side. Additionally, the thermal transfer printing device (200) includes a printer body part (210) and a side cover (220) having an insertion opening formed on its side into which a cartridge (100) is inserted, and the printer body part (210) is provided with an outlet (212) through which printed paper is ejected after printing. The side cover (220) is rotatably installed on the side of the printer body (210) so that the cartridge insertion port can be selectively opened or closed depending on whether the cartridge (100) is installed or removed. Figures 2 and 3 show a cartridge mounted in a thermal transfer printing device in more detail. As described, the cartridge (100) includes a supply reel (120), a winding reel (130), a cartridge cover (140), and a pressure hole (150) installed in a cartridge body (110) of a frame structure for receiving an ink ribbon and printing paper. Here, the cartridge body (110) includes a printing paper storage portion (111) in which printing paper is stored, and a ribbon frame (114) on which a supply reel (120) and a winding reel (130) are mounted to transport an ink ribbon. The cartridge cover portion (140) is composed of a supply reel cover (140a) covering the supply reel (120) and a winding reel cover (140b) covering the winding reel (130), and each of these covers is provided with a ribbon guide that guides the transport of the ink ribbon. Accordingly, the thermal transfer printing device (200) receives printing paper and an ink ribbon through the cartridge (100), and then, with the ink ribbon positioned on the printing paper, applies heat with a thermal transfer head to transfer (print) the ink. For example, with ink ribbons laminated on printing paper, they are transported forward simultaneously while a thermal transfer head applies heat to the ink ribbons to transfer one color, and then only the printing paper is returned to the rear to transfer another color, a process that is repeated. To this end, the thermal transfer printing device (200) includes a driving engine (ENG) that feeds the ink ribbon and printing paper to form a single path that transports the ink ribbon to one side and multiple paths that move the printing paper back and forth several times. As shown in FIG. 4, the cartridge (100) is assembled within the frame (F) of the engine, and the engine (ENG) and the cartridge (100) assembled together are mounted as a single unit to the printer body (210) of the thermal transfer printing device (200) to enable printing. At this time, the thermal transfer printing device controls the timing of the winding reel (130) that supplies the ink ribbon and the feed roller (not shown) that supplies the printing paper by using a rotatable swing lever to link or disconnect them. Specifically, a swing gear is provided that meshes with the feed gear of the feed roller, and the feed gear and the swing gear are axially coupled to the swing lever so that the swing gear meshes with or disengages from the reel gear depending on the forward and backward rotational direction of the swing lever. Therefore, when the swing lever is rotated to one side (forward side), the swing gear engages with the reel gear, and thus, in this engaged state, the winding reel (130) and the feed roller rotate simultaneously and are linked together. However, in the above-mentioned conventional technology, as the swing lever repeatedly rotates around the feed roller, there was a problem in that the alignment of the winding reel (130) and the feed roller became unstable if the swing lever's position became distorted or if vibrations occurred. For example, there was a problem where the swing gea