JPS6251474A - Printer - Google Patents

Abstract

PURPOSE:To eliminate trouble due to over-taking-up, by providing a boundary mark at an appropriate position of the entire length of an ink ribbon and reducing a take-up amount by the detection signal of said mark. CONSTITUTION:An adjusting means 28 is constituted so as to reduce the number of pulses of a pulse generator 27 controlling a drive means 25 when a detector 24 detects a boundary mark 20 placed on the two-split position of an ink ribbon 14, that is, when the winding diameter of an original winding core 15 is almost equal to that of a take-up core 16. The reduction ratio of the number of pulses is adjusted so that the take-up amount in the middle of the entire length of the ink ribbon 14 is almost the same as the take-up amount at the initial stage of taking-up. By this method, the generation of trouble in which almost all part of the head sides of monochromatic parts Y, M, C become wasteful with over-taking-up or discrimination marks 1 to 3 are not detected by the detector 24 during the printing of the monochromatic parts Y, M, C or the discrimination marks 1 to 3 themselves are printed, is eliminated and a printing time can be shortened and printing quantity can be enhanced without increasing the winding diameter of the scroll in the original winding side.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printer that performs color recording using an ink ribbon in which monochromatic portions of different colors are sequentially arranged in the length direction.

[Background of the invention]

Conventionally, in this type of printer, when monochromatic sections of different colors are arranged sequentially along the length of the ink ribbon, the beginning of one monochromatic section is moved to the front of the print head to print a line of characters of that color. After recording.

The carriage is returned to the starting position of that line, and the beginning of the monochromatic area to be printed is then moved to the front of the print head, and characters of that color are recorded. This process is repeated until one line of color recording is completed. This color selection operation uses a detector to detect the identification mark provided at the beginning of each monochrome section, and while or after returning the carriage to the starting position, the beginning of the next monochrome section to be printed is placed in front of the print head. It was supposed to wind up as if it were coming.

However, this winding amount is determined by the rotation speed of the stamping motor, which is controlled by a pulse generator activated by a detection signal from a detector that detects an identification mark, so as the winding diameter of the winding side scroll increases, When the take-up amount becomes large and exceeds about half of the total length of the ink ribbon, one-take take-up occurs, and the position far ahead from the beginning of the monochrome section comes to the front of the print head. Most of the side was wasted, and troubles occurred such as the identification mark being detected by the detector while printing a monochromatic part, or the identification mark itself being printed. Such troubles have also occurred in printers equipped with a mechanism that senses the friction coefficient of the take-up shaft and reduces the amount of take-up when the winding diameter of the take-up scroll increases. Additionally, in order to solve the above problem, it may be possible to increase the length of each single color section, but this would make it difficult to detect the identification mark, increase printing time, and reduce the amount of printing per scroll. In order to secure the necessary amount of printing, there is a problem in that the diameter of the scroll on the original scroll side becomes large.

[Purpose of the invention]

In view of the above points, this invention reduces the winding amount when the winding diameter of the single winding core becomes large, eliminates troubles caused by the single winding size, shortens printing time, and reduces the winding of the scroll on the single winding side. It is an object of the present invention to provide a printer that can increase the amount of printing without increasing the diameter.

[Structure of the invention]

In order to achieve the above object, the present invention provides a printer using an ink ribbon in which monochrome portions of different colors are sequentially arranged in the length direction and an identification mark is attached to the beginning of each monochrome portion. A boundary mark is provided in the winding machine, and an adjusting means is provided which operates to reduce the winding amount based on a detection signal of the boundary mark.

〔Example〕

Next, the present invention will be described based on embodiments shown in the accompanying drawings.

In the figure, 10 is a platen, and 11 is a carriage that can reciprocate along the platen 10.

12 is a print head mounted on the carriage 11 so as to be tiltable, and 13 is a cassette mounted on the upper surface of the carriage 11. As shown in FIG.
, M, and C with identification marks 1.2.3 attached to the beginning thereof. The ink ribbon 14 is the third
As shown in the figure, both ends are wound around a source winding core 15 and a winding core 16 provided at symmetrical positions in the cassette 13, and the intermediate portion is placed on both sides of a recess 17 provided at the center of one side of the cassette 13. It is exposed to the outside through the provided exit 18 and re-entrance 19. That is, the ink ribbon 14 unwound from the binary winding core 15 goes out through the outlet 18, straddles the recess 17, passes through the re-entrance 19, and runs so as to be wound around the winding core 16 in the cassette 13.

20 is when the winding diameters of the original winding core 15 and the winding core 16 are approximately the same, that is, the total length of the ink ribbon 14 is 2.
This is a boundary mark provided at a divided position (it may be a three-divided position or another position). This demarcation mark 2
0 is required to be distinguishable from the mark 1.2.3 for identifying the monochromatic portion.

21 is the ink ribbon 1 fed out from the original core 15;
4 to the exit 18; 22 is a detection window for the identification mark 1.2.3 of the ink ribbon 14 and the boundary mark 20;

A guide roller 23 guides the ink ribbon 14 entering the cassette 13 from the re-entrance 19 to the winding core 16.

The print head 12 has an ink ribbon 14.

This is fitted between the recessed part 17 that exposes this,
Normally, it is separated from the ink ribbon 14, but when the carriage 11 moves to the right, it is tilted by the print signal output from the control unit, and the corresponding monochrome portion Y of the ink ribbon 14 is moved away from the ink ribbon 14.
. Then, when it is wound up so that the beginning of the next monochrome part to be printed is in front of the print head 12, it moves to the right again and prints other colors in the same line.In this way, all the parts in that line are When color printing is finished.

The recording paper R is fed by one pifth in the direction of the arrow.

Reference numeral 24 indicates identification marks 1, 2, 3 and boundary marks 20 of the ink ribbon 14 from a detection window 22 provided in the cassette 13.
The detector 24 is provided at a suitable location in the printer body. 25 is a driving means for driving the winding shaft 26;

The driving means 25 not only winds up an amount corresponding to the unused portion of the ink ribbon fed out from the original winding core 15 during the printing operation performed by the right row of the carriage, but also
1 returns to the starting position, or during that time, winds up an amount to move the beginning of the next monochrome section to be printed to the front of the print head 12 (ribbon path from the detection position of the detector to the print head). The amount of winding is controlled by a pulse generator 27 activated by a detection signal generated by the detector 24 detecting the identification mark. Reference numeral 28 denotes a driving means 25 for moving the beginning of the monochrome section to the front of the print head 12.
with adjusting means operative to reduce the amount of winding.

The adjusting means 28 is configured such that the detector 24 is connected to the ink ribbon 140.
The driving means 25 is controlled when the dividing mark 20 attached to the two-divided position is detected, that is, when the winding diameters of the 9-winding core 15 and the winding core 16 become approximately the same size. The number of pulses of the pulse generator 27 is reduced. It is preferable that the rate of decrease in the number of pulses is set to a number corresponding to the increase in the winding amount that increases until the winding diameter of the winding core 16 becomes the same as the winding diameter of the original winding core 15. At half of the total length, the winding amount is adjusted to be approximately the same as the winding amount at the beginning of winding.

O Specific example (1) Using a printer with a printing speed of 20 cps, one character is composed of 9 x 12 using a 0.3 x 0.3 heating element, and the printing speed is 10 cps.
Print with I. Also - up to 80 characters per line (length 2
03.2 (Expletive) is printed in color.

The ink ribbon has three colors: Y, M, and C, and the length of the color is 31.
0m, identification mark length 30, ink ribbon thickness 9
μm, width 5.35mm, total length 60m, winding core?
A 15 wr, ribbon bus approximately 36fi from the detection position of the detector to the print head, the winding amount to move the beginning of the monochromatic part to the front of the print head after the detector detects the identification mark at the beginning of the ink ribbon's use. 2! '(
=50.8m), and this 2p corresponds to 120 pulses as the number of pulses sent to the winding drive means (stepping motor).

Under the above conditions, when the conventional printer prints the entire scroll, troubles occur in that as the winding diameter of the 9-winding core increases, the identification mark is printed or the identification mark is detected during printing.

In contrast, a boundary mark is provided 40 meters from the head of the ink ribbon, and when this boundary mark is detected, the number of pulses sent to the winding drive means (stepping motor) is reduced to 1.
Applicable to the printer of the present invention, which can be changed from 20 to 100,
- When the entire scroll is printed, the beginning of each monochromatic portion will move forward from the print head for a while as the diameter increases while the ink ribbon is wound around the take-up core to a distance of 40 m from its head. No problems were observed in printing marks or detecting identification marks during printing.

○Specific example (2) Print speed 50 cps printer, 0.3 X O,
One character is composed of 9 x 12 using 3 heating elements, 1oc
Print in pI. In addition, up to 80 characters per line (length 203.2mm) can be printed in color.

The ink ribbon has three colors: Y, M, and C, and the length of the color is 36.
0mm, identification mark length 30fi, ink ribbon thickness 9μm9 width 8N, total length 15mm, winding core diameter 19m
m, the ribbon path from the detection position of the detector to the print head is about 48 m, and after the detector detects the identification mark at the beginning of the use of the ink ribbon, the winding amount to move the beginning of the monochromatic part to the front of the print head is 2! This 2p corresponds to 120 pulses to be sent to the winding drive means (stepping motor).

Under the above conditions, when a conventional printer prints the entire scroll, troubles occur such as printing identification marks as the winding diameter of one winding core increases, or detecting identification marks during printing.

In contrast, a boundary mark is set 80 meters from the head of the ink ribbon, and when the detector detects this boundary mark, the number of pulses sent to the winding drive means (stamping motor) is changed from 120 to 60. - When the entire scroll is printed, as the ink ribbon is wound around the take-up core to a distance of 80 m from the head, as the winding diameter increases, the beginning of each monochromatic part will reach the print head. Although progress was made for a while, no troubles such as printing a different 1WA mark or detecting an identification mark during printing were observed.

〔Effect of the invention〕

As described above, the present invention provides a printer using an ink ribbon in which monochromatic parts of different colors are sequentially arranged in the length direction and an identification mark is attached to the beginning of each monochromatic part, and the ink ribbon is divided into sections at appropriate positions along the entire length of the ink ribbon. The present invention is characterized in that a mark is provided and an adjusting means is provided that operates to reduce the winding amount based on the detection signal of the boundary mark, so that when printing of one single color area is completed, the detector detects the identification mark. At the detection stage, the winding amount decreases from the position where the dividing mark is provided so that the beginning of the next monochrome part to be printed moves to the front of the print head, and the beginning of the monochrome part due to excessive winding. This eliminates troubles such as wasting most of the data, the identification mark being detected by the detector while printing a monochrome part, and the m-separation mark itself being printed, and the printing time is shortened. This has the excellent effect of making it possible to increase the amount of printing without increasing the diameter of the scroll on the single-volume side.

[Brief explanation of the drawing]

The figures show an embodiment of the invention, with FIG. 1 being an external perspective view and FIG. II is a diagram showing the ink ribbon portion, and FIG. 3 is an explanatory diagram showing the drive system of the cassette and the ink ribbon. 1.2.1-111 identification mark 13-cassette 14-ink ribbon 20-demarcation mark 24-detector 25-take-up shaft drive means 27-pulse generator 2B--adjustment means Y, M, C - Monochromatic part patent Applicant: Konishiroku Photo Industry Co., Ltd. No. 1
Country No. 21! 1 (1), 4

Claims (1)

[Claims] In a printer that uses an ink ribbon in which monochromatic parts of different colors are arranged sequentially in the length direction and identification marks are attached at the beginning of each monochromatic part, boundary marks are provided at appropriate positions along the entire length of the ink ribbon, and A printer characterized in that it is provided with an adjusting means that operates to reduce the amount of winding based on a detection signal of a boundary mark.