JPS61120780A - Heat transfer recorder - Google Patents

Abstract

PURPOSE:To arrange so that the attachment of an ink sheet transport system may be made feasible by installing the ink sheet transport system on an upper frame through a pressure member. CONSTITUTION:If an upper frame 2 is lifted open centering about a fulcrum shaft 20, a recording material transport system and an ink sheet transport system are separated because of the installation of an ink sheet frame 7 on the upper frame 2, and a wide space is created above the a recording material holder 3. As a result, the replacement of recording material 4 or an ink sheet 9 is rendered feasible. In addition, when the upper frame 2 is mounted, it has only to be closed as it is with the fulcrum shaft 20 as a center. Then a notch 21 in the ink sheet frame 7 and a positioning pin 22 for a lower frame 1 are fitted into each other, thus positioning both frames 1, 2 automatically. In turn, the fulcrum shaft gear 12, 13 of the ink sheet transport system, a feed gear 14 anda take-up gear 15 are securely intermeshed with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to a device that facilitates attachment and detachment of a recording material conveyance system and an ink sheet conveyance system in a thermal transfer recording device used in a facsimile, a printer, etc. It is something.

<Prior Art> Conventionally, in this type of apparatus, as shown in FIG. is an ink sheet 9, a supply roll 8 of the sheet 9, and a take-up roll 1
An ink sheet cassette containing an ink sheet conveying system made up of parts such as No. 1 is detachably provided by a support shaft, and the lower frame 1 and the upper frame 2 are configured to be openable and closable.

<Problems to be Solved by the Invention> However, in the conventional apparatus described above, the ink sheet cassette must be removed from the main body of the apparatus when replacing the recording paper or in the event of a jam, which is time-consuming and troublesome, and once removed, the ink sheet cassette must be removed from the main body of the apparatus. When installing the ink sheet, there are problems such as difficulty in smoothly connecting the ink sheet conveyance system to the drive system that transmits driving force thereto.

The present invention was developed to solve the above-mentioned conventional problems.

<Means for Solving the Problems> The means according to the present invention for solving the above problems will be explained using a facsimile machine.

FIG. 1 is an overall explanatory diagram of the apparatus, in which a recording material conveyance system is housed in a lower frame 1, and an ink sort conveyance system and a recording section are housed in an upper frame 2, respectively.

In one recording material conveyance system, a recording material (such as paper or plastic sheet) 4 loaded in a recording material holder 3 is conveyed by a platen roller 5, and after a predetermined image is recorded in a recording section, a cuffer 6 The other ink sheet transport system is housed in the ink sheet frame 7, and the ink sheet 9 wound around the ink sheet supply roll 8 is delivered to the recording section. The recording material 4 is conveyed in close contact with the separating member 10.
The recording material 4 is separated from the recording material 4 and wound onto a winding roll 11. A support shaft gear 12.13 is attached to the supply roll 8 and take-up roll 11 of the ink sheet conveyance system, respectively, and the gears 12.13 are connected to the supply gear 14 and take-up gear attached to the lower frame 1, respectively. 15, the driving force of a motor (not shown) is transmitted to the roll 8.11. The ink sheet frame 7 in which the ink sheet conveyance system is housed is attached via a spring 17 to a support rod 16 projecting from the ceiling surface of the upper frame 2.

Furthermore, a thermal recording head 18 is attached to the upper frame 2 to heat the ink sheet 9 according to predetermined information.
Reference numeral 8 is a device that can be brought into pressure contact with the platen roller 5 by a pressure spring 19, and constitutes a recording section.

Further, the upper frame 2 is pivotally connected to the lower frame l by a support shaft 20, and the upper frame 2 is attached so as to be expandable around the support shaft 20, and the ink sheet attached to the upper frame 2 is Several notches 21 are bored in the lower end of the frame 7 at predetermined positions, and positioning pins 22 are provided in the lower frame 1 at positions corresponding to the cutouts 21.
When the upper frame body 2 is attached to the notch 21 and pin 22
are designed to fit together.

In addition, 23 in the figure is a document reading section, and the song information read here is converted into electrical information by a photoelectric conversion element 24,
The information is transmitted to a thermal recording head of another facsimile recording device.

<Function> Next, the case where the recording material 4, ink sheet 9, etc. are replaced in the above apparatus will be described.

As shown in FIG. 2, when the upper frame 2 is expanded around the support shaft 20, the recording material conveyance system and the ink sheet conveyance system are separated because the ink sheet frame 7 is attached to the upper frame 2. A wide space is created above the recording material holder 3, which makes it easy to replace the recording material 4 or ink sheet 9.

Also, when installing the upper frame 2, if you close it with the support shaft 20 as the center, the notch 2 of the ink sheet frame 7
1 and the positioning pin 22 of the lower frame 1 are fitted, and both frames 1.2 are automatically positioned, and the supporting shaft gear 12.2 of the ink sheet conveyance system is engaged. - The meshing of 13 with supply gear 14 and take-up gear 15 is ensured.

At this time, even if the supporting shaft gears 12 and 13 are not fully engaged with the supply gear 14 and take-up gear 15, since the ink sheet frame 7 is held by the spring 17, the ink sheet frame 7 The displacement of spring 1
Absorbed by 7. If the device operates in this state,
Supply gear 14 or take-up gear 1 to which driving force is transmitted
5 moves, the meshing state of the gears, which was incomplete when one of the gears in the mutually meshing relationship moved, becomes complete, so no problem occurs.

<Example> Further, with reference to FIG. 3, the other side for positioning the ink sheet conveyance system when the ink sheet conveyance system is attached to the recording material conveyance system will be described.

In the configuration shown in FIG. 3, a U groove 25 is bored at a predetermined position in the lower part of the ink sheet frame 7 attached to the upper frame body 2 via a spring 17, and Eight portions 26 are provided concentrically with the rotation center, and a positioning pin 27 that fits into the U groove 25 is provided on the lower frame l.
Bearings 28 and 29 of the supply gear 14 and the winding gear 15 are provided in a protruding manner and are in contact with the 8 portion 26.
are provided for each.

In the above configuration, when the upper frame 2 is attached to the lower frame l, positioning in the X direction in the figure is ensured by the engagement of the U groove 25 and the positioning pin 27, and positioning in the Y axis direction is achieved by eight parts. 26
is ensured by contacting and locking the bearings 28,29. Therefore, the engagement between the support shaft gears 12 and 13, the supply gear 14, and the take-up gear 15 is ensured, and the support shaft gears 12
．． 13, the supply gear 14, and the take-up gear I5 can be determined by the sum of the radius R of the 8 part 26 and the radius of the bearing 28°29.

<Effects of the Invention> As described above, the present invention attaches the ink sheet conveyance system to the upper frame and pivotally connects it to the recording material conveyance system, so that the ink sheet conveyance system and the recording material conveyance system can be expanded. This makes it easy to replace recording materials and ink sheets, and since the ink sheet transport system is attached to the upper frame via a pressing member, it is possible to prevent the gears of the ink sheet drive system from being imperfectly engaged when installed. Even if there is a problem, this can be absorbed, so that the ink sheet transport system can be easily installed in relation to the positioning mechanisms of both transport systems.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the entire apparatus according to the present invention, Fig. 2 is an explanatory diagram of the ink sheet conveyance system in an expanded state, Fig. 3 is an explanatory diagram showing an embodiment of the positioning mechanism, and Fig. 4 is an explanatory diagram of the conventional system. It is an explanatory diagram of the technique. 1 is a lower frame body, 2 is an upper frame body, 4 is a recording material, 5 is a platen roller, 7 is an ink sheet frame, 8 is a supply roll, 9 is an ink sheet, IO is a separating member, 11 is a winding roll, 12 .13 is the support shaft gear, 14 is the supply gear, 1
5 is a winding gear, 16 is a support rod, 17 is a spring, 18 is a thermal recording head, 19 is a pressure spring, 20 is a spindle, 21 is a notch, 22.27 is a positioning pin, 25 is a U groove, 26
is the R part, and 28.29 is the bearing.

Claims (1)

[Claims] In a thermal transfer recording device in which an upper frame body housing an ink sheet conveyance system and a recording section is pivotally and expandably attached to a lower frame body housing a recording material conveyance system, the upper frame body is provided with a pressing member interposed in the upper frame body. A thermal transfer recording device, characterized in that the ink sheet conveyance system is attached to the ink sheet conveyance system.