JPS63132076A - Recorder - Google Patents

Abstract

PURPOSE:To improve the precision of line feed by providing a switch means for adding a minute quantity to or subtracting the same from a line feed value stored in a memory, and another memory storing the line feed value subjected to addition or subtraction, and by determining the quantity of line feed on the basis of a value of the other memory. CONSTITUTION:The quantity of fine adjustment of line feed is set. Test printing for setting the quantity of fine adjustment of line feed is started, and MPU 5 reads a set value of DIP SW 6 and adds an offset value corresponding to the read set value to a line feed value of a memory 7a. The value thus obtained is stored in a memory 7b, an appropriate pattern is recorded in one line, a pulse motor 9 is driven by the value (number of pulses) of the memory 7b to execute line feed, and recording is conducted another line. In the case when overlap, blank or the like is found in a joint of the recorded pattern due to the line feed, the operation conducted thereto fore is repeated, and when the overlap or the like is not found, the fine adjustment of the quantity of line feed ends.

Description

DETAILED DESCRIPTION OF THE INVENTION (Utilization in a business) The present invention relates to a recording device with improved line feed accuracy.

(Prior Art) For example, color inkjet printers are widely known. In these printers, when data is received from the host device, this data is temporarily stored in an image buffer, and then the head 2 is driven while the carriage 1 is moved in the direction of arrow p in FIG. Record the code. Then, when the recording of − lines is finished,
Serial recording in which the carriage 1 is moved B in the direction opposite to the arrow p, returned to the recording start position, the platen 4 is rotated to feed the recording paper 3 by one code in the direction of the arrow q, and then the next line is recorded. Many adopted the method.

(Problem to be solved by the invention) However, as recording density increases, for example, 16 dots/
When recording density is on the order of mm, paper feeding accuracy has become a problem. That is, in the case of the above-mentioned printer that performs serial recording, problems arise in that the machining accuracy of the platen diameter causes the line spacing to become wide, or conversely, the lines to overlap. Therefore, in order to perform line feeding accurately, there was a need to select platens with high accuracy. Such drawbacks are also common to so-called full-line printers.

(Means for solving the problem) A memory that stores basic line feed values, a switch means for adding or subtracting a minute amount from the value in this memory, and storing the line feed value added or subtracted by the switch means. The line feed amount is determined according to the value of this other memory.

(Function) By operating the switch means, line feed errors caused by variations in platen diameter etc. can be eliminated for each device.

(Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows the circuit configuration of the recording apparatus of this embodiment.

In the figure, 5 is a lid controlled by MPLI (microprocessor), which controls the entire device or line feed motor! !
I! control the movement. Reference numeral 6 denotes a so-called ditub switch, which allows various operating values of the recording device to be manually set, and is further used in this example to set the amount of fine adjustment of the line feed.

A memory 7 includes a ROM storing a control program for the recording apparatus of this embodiment, a RAM used as a work area, and the like.

The ROM includes a memory 7a in which preset line feed values are stored.

Within the RAM, there is a memory 7b that stores a value obtained by adding or subtracting a very small amount specified by the ditub switch 6 to the value in the memory 7a. 8 is a driver circuit for driving the pulse motor 9. Reference numeral 10 denotes a driving force transmission system consisting of a pulley and a belt, and in this embodiment, the paper feed amount per line is 128/400 inch, and is designed so that one pulse of the pulse motor corresponds to 1/1500 inch feed. There is.

Next, the operation of this embodiment will be explained with reference to the flowchart shown in FIG. First, in step S1, the DIP switch 6 is used to set the amount of fine adjustment of the line feed.

In addition, in this embodiment, settings from -4 to +3 are possible, and correspondingly, the settings range from -471,600 inches to +3/1.
Fine adjustment of 600 inches is possible.

Next, the process moves to step S2, and a test print for setting the fine adjustment amount of line feed is started. Then, in step S3, the MPU 5 reads the setting value of the DIP SW 6, and in step S4, the offset value corresponding to the setting value read in step S3 is stored in the memory 7a.
Add to line feed value. For example 128/4
00 inches and the offset amount is +2, then (128/400+2/1600)÷1/1 so O=514 (pulses). This value is stored in the memory 7b. Next, the process moves to step S5.
One line of a suitable pattern is recorded, the pulse motor 9 is driven by the value (number of pulses) in the memory 7b to perform line feeding, and then another line is recorded. In the case of this embodiment, a pattern as shown in FIG. 4 is used. Next, the process moves to step S6, and when checking the pattern recorded in step S5, if there is a white spot or the like in the seam caused by line feed, the process returns to step S1, and the process returns to step S1.
The steps from to step S6 are repeated, and if not, the fine adjustment of the B reline feed amount ends in step S7.

In the above embodiment, each time the recording operation and line feed are completed, the setting of the ditub switch is changed to set the fine adjustment amount of the line feed by checking the recording result. Regardless of the value, the optimum setting value may be selected after performing line feed and recording operations for all setting values.

Furthermore, the recording head is not limited to the Infusiera system, and for example, a thermal transfer recording head may be used.

(Effects) As described above, according to the present invention, it is possible to improve the accuracy of the line feed amount with a simple configuration and without selecting platens.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a recording device according to an embodiment of the present invention. FIG. 2 is a schematic diagram of a conventional serial printer. FIG. 3 is a flowchart showing a control method of this embodiment. FIG. 4 is a diagram of a conventional serial printer. FIG. 3 is an explanatory diagram of a test print pattern of FIG. 1-m-carriage 2-m-recording head 3-m-recording paper 4-m-platen 5---MPU 6---date switch? a, 7b---Memory 9-11 Valse motor b Male 2 Fig.

Claims (1)

[Claims] A recording device configured to feed a recording medium according to a line feed value preset in a memory, comprising a switch means for adding or subtracting a minute amount to the line feed value stored in the memory, and an addition or subtraction by the switch means. What is claimed is: 1. A recording apparatus characterized in that the recording apparatus has another memory for storing a line feed value that has been set, and the line feed amount is determined based on the value of the other memory.