JPS63102972A - Line head type printer - Google Patents

Abstract

PURPOSE:To perform the next printing without considering the heat radiating cooling time of a heat generating ribbon, by allowing the heat generating ribbon to run in an inclined state with respect to a line head type printing head which is provided so as to cross a paper feed direction at a right angle. CONSTITUTION:A printing head 1 is arranged so as to cross the feed direction of paper 3 and a thermal transfer ribbon 6 at a right angle, while an endless heat generating ribbon 4 is contacted with the printing head 1 in a slidable manner and runs so as to be inclined by an angle theta with respect to the printing head 1. When the first printing line is finished over the lateral direction of the paper 3, the paper 3 is allowed to run and move by one printing line in an A-direction, and the endless heat generating ribbon 4 is allowed to run and move in a B-direction while inclined by definite quantity and the thermal transfer ribbon 6 is allowed to run and move by definite quantity in a C-direction to perform the printing of the second printing line. Since the endless heat generating ribbon 4 is not continuously heated at the same place, it becomes unnecessary to provide a heat radiating cooling time. By this method, a high speed printing becomes possible and the width of the heat generating ribbon can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a line head type printing device used in line head printers, facsimile receivers, and the like.

[Prior art] To print a larger number of characters than in the past - Y cards are arranged in a line at regular intervals in a direction orthogonal to the paper feeding direction, and predetermined printing is performed by controlling the feeding of the paper and controlling the energization of the print head. 2. Description of the Related Art A variety of line head type printing devices are used as printing devices such as line head printers and facsimile receivers.

[Problems to be Solved by the Invention] However, in the structure of this type of line head type printing device, the print head has a considerable heat dissipation time (approximately 1.0
~2, 0I1m 5ec), and the printing speed of the printer is regulated by the heat dissipation time, so the printing timing cannot be shortened below a certain value, so the energization time of the print head is controlled to be shortened. However, the printing speed of the entire printer could not be improved.

The present invention was made in view of the above problem, and includes a large number of print head electrodes arranged at regular intervals in a direction perpendicular to the paper feeding direction.
In addition to achieving high-speed printing with a line head type printing device that performs predetermined printing by controlling the paper feed through a heat generating ribbon and a thermal transfer ribbon and controlling the energization of the RAD 1 electrode to the above-mentioned printing, It is an object of the present invention to provide a line head type printing device that is inexpensive.

[Means for Solving the Problems] The line head type printing device of the present invention prints by bringing a heating ribbon heated by electricity from a print head electrode into contact with a paper via a thermal transfer ribbon, and then !
The gist of this is that it is configured to move away from the print head (including adjacent print head electrodes).

That is, a print head in which a large number of print head electrodes are arranged in a row at regular intervals in a direction perpendicular to the paper feeding direction is closely opposed to the paper via a heat generating ribbon and a thermal transfer ink ribbon,
In a line head type printing device that performs predetermined printing by controlling the feeding of the paper and controlling the energization of the print head electrode, the heating ribbon is in sliding contact with the print head electrode arranged in the print head, and in the direction of arrangement. It is configured to run on an incline at an appropriate speed.

The above-mentioned line head type printing device performs printing by feeding and moving the paper for each printing line and moving the heating ribbon and the thermal transfer ribbon intermittently in accordance with the energization timing of the print head electrode.

[Operation] Therefore, after printing the first print line, the paper moves in a direction perpendicular to the print head by one print line, and at the same time, the heating ribbon moves a certain amount in a direction inclined to the arrangement direction of the print head electrodes. Moving.

From this state, the print head electrode is energized to print the second print line.

When printing this second printing line, the heat generating ribbon is moved in an oblique direction so that a portion different from that when printing the first printing line is energized and heated.

Due to this movement of the energized position of the heating ribbon, the same place on the heating ribbon is not heated continuously, and since the first heating part is mechanically moved from the second printing part, There is no thermal effect on the second printing surface due to the residual heat of the heat generating ribbon, and as a result, the heat generating ribbon has a considerable heat dissipation time (approximately 1.0~2.0wn) after being heated with electricity.
5ec), the printing speed of the printer is not limited by the heat dissipation time.

Therefore, the printing timing of the printer can be shortened regardless of the heat dissipation time of the heating ribbon, and high-speed printing can be performed.

Further, by configuring the heat generating ribbon to run obliquely to the direction in which the print head electrodes are arranged, the width of the heat generating ribbon can be narrowed.

[Embodiment] Hereinafter, embodiments of the line head type printing device of the present invention will be described with reference to the drawings. FIGS. 1 to 3 show the first embodiment. Fig. 1 is a schematic diagram showing the principle of a line head type printing device, and reference numeral 1 indicates a printing pattern in which a large number of print head electrodes 2, 2, etc. are arranged in a straight line at a certain interval in the longitudinal direction of one side. It is the head. The print head 1 has paper 3
The paper feeding direction A and the parallel direction of the print head electrodes 2 are arranged so as to be perpendicular to each other, and the print head electrodes 2, 2, . . . constitute one row aligned in the width W direction of the paper 3. , the paper 3 is fed by a feed control mechanism (not shown) so that the print head electrodes 2, 2, . . .
It has a structure that controls the feeding by dots.

In addition, the symbol 4 indicates each print head electric terminal 8 of the print head 1.
i! 2.2 It is an endless heating ribbon consisting of a conductive layer and a resistive layer interposed between paper 3, and generates point-shaped heating parts when energized. , 5... and installed at an angle θ with respect to the rows of print head electrodes 2, 2..., the print head electrodes 2 at both ends of the endless heating ribbon 4 .2 is configured to fit within the ribbon width W. The endless heating ribbon 4 has a structure in which it is controlled to be fed by an appropriate amount (arrow B) between the energization timings for the print head electrodes 2, 2, . . . by a ribbon feeding roller 5 which also serves as a common electrode. Further, reference numeral 6 denotes a structure that is inserted between the paper 3 and the endless heating ribbon 4, and is controlled to be fed by an appropriate amount (arrow C) between the energization timings for the print head electrodes 2, 2, etc. by an appropriate drive device (not shown). Thermal transfer ink remaining on the thermal transfer ribbon 6 is melted by the heating of the endless heating ribbon 4, and printing is performed on the paper 3 in close contact with the thermal transfer linon.

The line head type printing device configured as described above controls the feeding and movement of the paper 3 for each printing line, and print head electrodes 2, 2...
Printing is performed by moving the endless heating ribbon 4 intermittently (arrow B) and the thermal transfer ribbon 6 intermittently (arrow C) in accordance with the energization timing.

When printing on paper 3, as shown in FIG.
5ee) When electricity is applied, since the endless heating ribbon 4 is grounded by the ribbon feed roller 5 which also serves as a common electrode, a current flows through the endless heating ribbon 4, and at this time, the resistance layer in contact with the print head electrode 2 Heat is generated in spots. Therefore, the point-like heat generation heats the core of the thermal transfer ribbon 6 that is in close contact with the endless heating ribbon 4, and a dot is exposed on the paper 3 that is in close contact with the endless heating ribbon 4 due to the melted thermal transfer ink.

Therefore, when printing the first print line, the print head electrodes 2, 2, etc. are selectively energized as shown in FIG. conduct. When the printing of the first printing line is completed, the print head 1
At the same time, the endless heating ribbon 4 is fed and moved (arrow A) in the perpendicular direction by one printing line (one dot)
is moved by a certain amount (arrow B) L in a direction inclined (inclination angle θ) to the arrangement direction of the print head electrodes 2, 2, . . . , and the thermal transfer ribbon 6 is further moved by a certain amount (arrow C).

In this state, the print head electrodes 2, 2, . . . are selectively energized to print the second print line.

When printing this second printing line, the endless heating ribbon 4
As the ribbon moves diagonally, when viewed from one printing head electrode 2, a portion of the first printing line that is different from that during printing is energized and heated, and the same location of the endless heat generating ribbon 4 that has moved is heated next to or in the light beam. Since there is no movement to the position of the print head electrode 2, the core is not heated continuously.

Therefore, the line head type printing device configured as described above can print the next printing line without waiting for sufficient heat dissipation cooling time of the endless heating ribbon 4, and can increase the printing speed.

Also, the endless heating ribbon 4 is attached to the print head ring f! 2゜2・
...Since the structure is such that it is set in a direction inclined (angle of inclination θ) with respect to the row, the ribbon width W of the endless heating ribbon 4 is set to be smaller than the width W of the paper 3 (w = W sin θ, so θ is By making it smaller, W becomes smaller.).

Next, FIG. 4 shows another embodiment of the present invention, in which a tape-shaped heat generating ribbon 7 is used in place of the endless heat generating ribbon 4 of the above embodiment.

The tape-shaped heating ribbon 7 is wound between a feed reel 8 and a take-up reel 9, and is connected to each print head electrode 2 of the print head 1.
2... and the thermal transfer ribbon 6, and are installed at an angle θ with respect to the row of print head electrodes 2, 2..., and the feed reel 8 and the take-up reel 9, the structure is such that the feed is controlled appropriately (1 (arrow B)) between the energization timings for the print head electrodes 2, 2, etc., and the common electrode roller 10 is brought into close contact with a part of the tape-shaped heating ribbon 7. It slides and is electrically grounded.

In the line head type printing device provided with this tape-shaped heating ribbon 7, the tape-shaped heating ribbon 7 is connected to the printing head electrodes 2, 2.
Because it is tilted (tilt angle θ) with the arrangement direction of...
When printing the next time, the same part of the tape-shaped heating ribbon 7 that has generated heat due to the previous printing will not move to the next position or the position of the print head electrode 2 of the Koyo, and the same part will be heated continuously. Therefore, the printing speed of the line head type printing device can be increased as in the above embodiment.

[Effects of the Invention] As described above, the line head type printing device of the present invention has the following advantages:
By configuring the heat-generating ribbon to run at an angle with respect to the line head-type print head installed perpendicular to the paper feeding direction, it is possible to perform the next print without considering the heat dissipation cooling time of the heat-generating ribbon. Therefore, the printing speed can be increased, and the width of the heating ribbon can be reduced, so the running cost can be reduced, and the practical effects after implementation of the present invention are extremely high. big.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing the first embodiment of the line head type printing device of the present invention, Fig. 2 is an enlarged sectional view of the main part, Fig. 3 is an explanatory diagram showing the printing state, and Fig. 4 is a schematic diagram showing the first embodiment of the line head type printing device of the present invention. It is a schematic diagram showing an example. 1...Print head, 2...Print head electrode, 3...
・Paper, 4... Endless heating ribbon, 5... Ribbon feed roller that also serves as common electrode, 6... Thermal transfer ribbon, 7...
Tape-shaped heating ribbon, 8... feeding reel, 9... take-up reel, 10... common electrode roller.

Claims (1)

[Claims] A print head in which a large number of print head electrodes are arranged in a line at regular intervals in a direction perpendicular to the paper feed direction is closely opposed to the paper via a heat generating ribbon and a thermal transfer ink ribbon, and is used to control the paper feed and control the print head. In a line head type printing device that performs predetermined printing by controlling the energization of electrodes, the heating ribbon is configured to come into sliding contact with a print head electrode arranged in the print head, and run at an appropriate speed with respect to the arrangement direction. A line head type printing device characterized by: