JPS59209166A - Printing device - Google Patents

Abstract

PURPOSE:To facilitate bonding of a single slip sheet to a printing unit by guiding both side edges of a single slip sheet to a pressure contact roller mechanism while restricting the position, and providing a pair of axially slidable single slip sheet guide mechanisms at a platen. CONSTITUTION:A strip sheet 4 is inserted along a sheet guide plate 3 along a platen 1, then wound on the platen 1, and then the perforation holes of the sheet 4 are engaged with a shifting mechanism 7. Then, pressure contact rollers 5, 6 are contacted under pressure with the platen 1 through the sheet 4. In this manner, a printing head 2 is horizontally moved to print on the sheet 4, but moved synchronously with the platen 1 and the mechanism 7 whenever the printing of one line is finished, the sheet 4 is moved to the position opposed to the head 2 in the next line to be printed. This operation is repeated to proceed the printing.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a printing device, and an object of the present invention is to make it possible to easily and accurately attach and transport a cut sheet to a printing section.

An embodiment of the present invention will be described below with reference to the drawings.

In the figure, 1 is a platen, 2 is a print head that moves parallel to the platen 1 and along its longitudinal direction and prints on the printing paper, and 3 is a part of the printing paper relative to the platen 1.
Paper guide plates 5 and 6 that guide the strip-shaped paper 4 are pressed against the platen 1 via printing paper, and the platen 1
A pressure roller is provided to feed the printing paper without slipping with the zero rotation, and 7 is a tractor belt with a protrusion that is engaged with a minced hole provided on the side edge of a strip of paper that is one of the printing papers. By running this belt in synchronization with the rotation of the platen 1, a tractor transport mechanism 8 transports a strip of paper, and 8 is one of the printing papers assembled to the tractor transport mechanism 7. This is a guide member that guides the F-slip sheet 9 to the platen 1. Two pressure rollers 5 and 6, two transfer mechanisms 7, and two guide members 8 are provided each, and a shaft 11° is attached to a main body 10 that rotatably supports the platen 1 so as to be parallel to the platen 1. 1
2.13 and 14 allow it to freely slide in the axial direction of the platen 1. One of the support shafts 13, 14 of the transfer mechanism 7 is used as a shaft for driving the tractor belt.

Next, the operation of the above-mentioned definite example will be explained. First, when perforated strip paper is used as printing paper, insert the strip paper 4 along the paper guide plate 3 toward the platen 1 as shown in FIG. After winding the paper 4, the perforations of the paper 4 are engaged with the transport mechanism γ. Next, the pressure rollers 5 and 6 are brought into pressure contact with the platen 1 via the paper 4. In this way, the print head 2 is moved horizontally to print on the paper 4.
Each time printing for a line is completed, the platen 1 and the transfer mechanism 7 are operated in synchronization, and the paper 4 is transferred to a position opposite the head 2 to send the next print line. This operation is repeated to advance printing. Next, when printing paper is used, as shown in Figs. 2 and 3, slide the two guide members 8 against each other and adjust the distance so that it matches the width of the cut paper 9 to be used. After that, the paper cut sheet 9 is inserted between the transfer mechanism 7 and the guide member 8 so that its both side edge portions are guided by the guide member 8, and after wrapping the paper sheet 9 around the platen 1, it is pressed. The roller 5°6 is brought into pressure contact with the platen 1 through the paper 9.

In this way, printing is performed in the same manner as described above, but in this case, the transfer of the cut sheet 9 is carried out by a pressure roller mechanism including the platen 1 and the rollers 5 and 6 pressed against the platen.

As described above, according to the printing device of the present invention, it is possible to print on either strip paper or cut paper as printing paper, and for cut paper that is particularly prone to misalignment, the guide mechanism Since the paper is positioned and guided, it is possible to perform high-quality printing similar to that of strip paper, and the guide mechanism for cut paper is simply a matter of assembling the guide member to the strip paper transfer machine F14. Since it has a simple configuration, it can be realized at low cost.

[Brief explanation of drawings]

FIG. 1 is a side view of the main part of a printing device according to an embodiment of the present invention showing a state in which strip paper is installed, and FIG. 2 is a main part (1j 1 side view, 3 The figure is a perspective view of the same essential parts. 1... Platen, 2... Print head, 4
...Band-shaped paper, 5,6... Pressure roller,
7... Transfer mechanism, 8... Guide member, 9...
...Single sheet. Name of agent: Patent attorney Toshio Nakao (1st person)
Figure 2

Claims (1)

[Claims] a pair of transport mechanisms that transport the paper strip; a platen that supports the paper strip and rotates in relation to the transport operation of the transport mechanism; a pressure roller mechanism that is pressed against the platen; and a pressure roller mechanism that is pressed against the platen. A pair of cut paper guide mechanisms are provided which guide the cut paper while regulating the position of both side edges thereof and are slidable in the axial direction of the platen, and the cut paper guide mechanism is connected to the transfer mechanism. Assembled printing device 6