JPS6089382A - Printer - Google Patents

Abstract

PURPOSE:To facilitate the assembly and maintenance by a method wherein a subplate on which a capstan, a pinch roller and a platen are mounted integrally beforehand is installed to a main plate with other parts mounted thereon, afterward. CONSTITUTION:A capstan 1, a pinch roller 3 and a platen 12 are pivoted integral at both ends thereof respectively with a pair of subplates 13. A timing pulley 17 is mounted on the capstan 1 and a rotary solenoid 18 is mounted through a mounting plate 19 separately. The unit thus obtained is installed to a main plate being positioned with a guide pin 14. Thus, as the capstan, pinch roller and platen are assembled on the subplate as unit beforehand, this facilitates the installation to the main plate and enables accurate assembly along with a simplified part exchange.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an i-printing device that is easy to assemble and maintain.

In a conventional printing device, a capstan, a pinch roller, a platen, etc. for feeding printing paper are assembled together with a paper ejection mechanism, a printing section, a printing paper storage section, etc. on a main frame at the same time.

However, this placed heavy restrictions on the assembly order (and required skill from the operator. Also, when replacing capstans, pinch rollers, platens, etc., other unrelated parts attached to the main frame 1) Had to remove it.

The present invention eliminates such conventional drawbacks and replaces the capstan, pinch roller, and platen with sub-brakes.
Easy assembly and maintenance can be achieved by attaching the K-mounted parts to the main plate, which has been integrated in advance, to the main plate on which the message parts have been mounted.

Hereinafter, an embodiment of the present invention will be described in the case of a thermal transfer type printing device based on the drawings.

FIG. 1 shows the overall structure of a thermal transfer printing device. The capstan 1 is rotationally driven by a paper feed motor 2. The pinch roller 3 pinches the printing paper 4 between itself and the capstan 1 and feeds it in the direction indicated by the arrow. Ink sheet 5
is fed in the direction of arrow B in the same direction and at the same speed as the printing paper 4 by a take-up shaft 7 which is rotationally driven by a take-up motor 6. The printing paper 4 is continuously supplied from a paper roll 8, and the ink sheet 5 is continuously supplied from an ink supply roll 9, but even if the printing paper 4 is cut paper, it can be driven by appropriately setting the distance between the capstan 1 and the platen 12. . The ink sheet 5 is guided by guide shafts 11α and 11b before and after the print head 10, and is brought into close contact with the print paper 4 on the platen 12. When the print head 10 applies printing energy to the ink sheet 5, the thermal transfer ink is transferred to the print paper 4.

FIG. 2 is a cross-sectional view of a thermal transfer printing device according to an embodiment of the present invention. As shown in FIGS. 3 and 4, the sub-plate 13 integrally pivots the capstan 1, the pinch roller 3, and the platen 12.

The sub-plate 13 has a guide plate/14 and a hole 13 (L
is installed, and the guide bin 14 is attached to the main plate 1.
When attaching the sub-plate 13 to the plate 5, the stepped portion 15 serves to position the sub-plate 13. The sub-plate 13 is connected to the main plate 15 through the hole 13α through the edge hole 15b and the screw 16.
Fixed by

FIG. 3 is a conceptual diagram of a paper drive block assembly according to an embodiment of the present invention, in which the reed, capstan 1, pinch roller 3 and platen 12 are integrally pivotally connected at both ends by a pair of sub-plates 13. The timing pulley 17 is attached to the capstan 1, and the rotary solenoid 18 is attached to the mounting plate 19.
They are each attached by a common mounting method via "fc". FIG. 4 is an overall view of the unit assembled in this way.

As shown in FIG. 2, this unit is attached to a main plate 15 with a guide pin 14 serving as a positioning member.

As described above, in the present invention, since the capstan, pinch roller, and platen are pre-assembled as a unit using the sub-plate, it is extremely easy to attach the capstan to the main plate, and accurate assembly can be performed without requiring the operator's skill level. becomes possible. Furthermore, when it is necessary to replace parts assembled in this unit, only this unit can be removed from the main frame, so there is no need to remove other related parts from the main frame. Furthermore, when replacing parts other than this unit, even if the parts inside this unit get in the way, you can remove the main parts such as the capstan, pinch roller, and platen all at once by removing the screws that secure the unit. becomes extremely simple.

[Brief explanation of drawings]

Fig. 1 is a schematic side view showing the operation of an embodiment of the present invention, Fig. 2 is a side view showing the configuration of an embodiment of the invention, and Fig. 3 is an exploded view showing the assembly of an embodiment of the invention. FIG. 4 is a perspective view of the assembled unit. 16. Capstan, 200 paper feed motor, 33. Pinch roller-140, printing paper, 5. . Ink sheet, 601 winders, 700 winders, 810 paper rolls, 90. Ink supply roll, 10. ,
Print head, 11α, 11b, guide shaft, +2. , platen, 13. , subplate, 14. . Guide bin, 15. , main plate, ]6°. Fuji,
17. , timing pulley, 180. Rotary solenoid, 19. . On the mounting plate, A is the paper feeding direction and B is the ink sheet feeding direction. Applicant: Seiko Electronic Industries Co., Ltd. Agent Patent Attorney Mogami

Claims (1)

[Claims] In a printing device consisting of a capstan and a pinch roller for pinching and feeding printing paper, and a printing section having a platen provided near the capstan and pinch row 2, a front-viewing capstan, a pinch roller and It is equipped with a sub-plate for integrally pivotally mounting the rotating shaft of the platen, and a positioning part and a fixing part provided on this sub-plate, and the gear 2 tongue, pinch roller and brush cutter 1 are connected via the sub-plate. A printing device characterized in that it has a structure that allows it to be integrally removed from, positioned and fixed to a main plate.