JPS633981A - Printer - Google Patents

Abstract

PURPOSE:To enhance a cost performance by using the drive source of a printing head feed mechanism part or that of a paper feed mechanism part as the drive source of a cooling fan in common. CONSTITUTION:One drive shaft 1a of a lateral feed drive motor 1 allows a carriage 4 having a printing head 3 mounted thereon to reciprocally move in a line direction along a guide shaft 6 by the rotation of said drive shaft 1a through a timing belt 10 and a cooling fan 7 is connected to the other drive shaft 1b of the motor 1. When the drive motor 1 is driven to allow the printing head 3 to move in the line direction in order to perform printing at an arbitrary position, the cooling fan 7 also rotates simultaneously and an air stream is generated in a housing of which the temp. is raised by the heat generated from the electric circuit part of the printing head 3 and the replacement of air is performed between the outside and the inside. By this method, a low cost printer having a high cost performance can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printing device, and particularly to a cooling mechanism provided inside the printing device.

[Prior Art] Conventionally, this type of printing device has a print head that actually prints on print paper, a cross-feeding mechanism that transports the print head in the row direction, and a transverse feed mechanism that moves the print paper in the column direction. A paper feeding mechanism section to drive the various mechanisms, an electric circuit section including a power source to drive the various mechanisms, and a casing that houses the various mechanisms and electric circuits, isolates them from the outside, and satisfies the external design. It consisted of a cooling mechanism section to prevent the internal temperature of the casing from rising due to heat generated by the print head, electric circuit section, etc. when the printing device is driven.

The cooling mechanism section includes a cooling fan and a drive motor for driving the cooling fan, and is provided separately from the lateral feed mechanism section, paper feed mechanism section, etc. of the print head.

[Problems to be Solved] In the conventional printing device described above, a cooling mechanism section is provided independently to prevent the internal temperature of the housing from rising, so the performance/price ratio of the printing device is low. The disadvantage is that a low-cost printing device cannot be supplied.

[First Step Solution to the Problems] The present invention that solves the above-mentioned conventional problems includes: a print head feeding mechanism section that moves a print head that performs printing in the row direction;
In a printing device equipped with a paper feeding mechanism unit that feeds printing paper in the column direction, the drive source of the print head feeding mechanism unit or the drive source of the paper feeding mechanism unit is also used as a drive source of a cooling fan. .

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic diagram of a printing device according to an embodiment of the present invention. In the figure, 1 is a lateral feed drive motor, 2 is a paper feed drive motor, 3 is a print head, 4 is a carriage, 5 is a platen, 6 is a guide shaft, and 7 is a cooling fan.

The drive motor 1 has two drive shafts 1a and lb. A timing belt 10 connected to a carriage 4 is hooked onto the drive shaft 1a of the drive motor 1, and as the drive shaft 1a rotates and the timing belt 10 moves, the carriage 4 on which the print head 3 is mounted moves to the guide shaft. 6 in the row direction. Also,
As shown in the figure, a cooling fan 7 is connected to the drive shaft 1b of the drive motor 1, which cools the printing device by generating air flow within the housing of the printing device.

Further, the drive shaft 2a of the paper feed drive motor 2 is connected to the pulley 5a of the platen 5 via the timing belt 11, and the drive shaft 2a of the paper feed drive motor 2 is connected to the pulley 5a of the platen 5.
rotates to feed the printing paper on the platen 5.

With the above structure, when the horizontal feed and cooling drive motor 1 is driven to move the print head 3 in the row direction in order to print at an arbitrary position, the cooling fan 7 also rotates at the same time, and the print head A flow of air occurs inside the casing, which rises due to the heat generated by 3 and the electric circuit section, and air is exchanged between the outside and the inside.

Next, another embodiment of the present invention will be described with reference to FIG. In this embodiment, the paper feed motor 2 is provided with two drive shafts 2a and 2b, and the drive shaft 2a is connected to the timing belt 11.
is connected to the shaft pulley 5a of the platen 5 via
A cooling fan 7 is attached to the drive shaft 2b as shown in the figure.

With this structure, when the paper feed motor 2 is driven to rotate the platen 5 in order to move the printing paper in the column direction, the cooling fan 7 is rotated at the same time, creating a flow of air inside the housing.

As described above, in the present invention, a drive motor for driving a cooling fan is not separately and independently provided as in the past, but the cooling fan is used as a lateral feed drive motor for a print head or for feeding printing paper. It is designed to be driven by a drive motor.

[Effects of the Invention] As explained above, the present invention uses the drive source of the print head feed mechanism section or the drive source of the paper feed mechanism section as the drive source of the cooling fan. Since there is no need to provide a separate drive source for the fan, the cost required for the cooling mechanism can be kept low, and an inexpensive printing device with a high performance/price ratio can be provided.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a printing device according to one embodiment of the invention, and FIG. 2 is a schematic diagram of a printing device according to another embodiment of the invention. 1: Lateral feed drive motor 2: Paper feed drive motor 3: Print head 4: Carriage 5 Nib laten 6: Guide shaft 7: Cooling fan 10.11: Timing belt

Claims (1)

[Claims] In a printing device that includes a print head feeding mechanism that moves a print head that performs printing in the row direction, and a paper feeding mechanism that feeds printing paper in the column direction, the drive source of the print head feeding mechanism or the paper A printing device characterized in that a drive source for a feeding mechanism section is also used as a drive source for a cooling fan.