KR950000815B1 - Method of and device for auto-collecting in letter form - Google Patents

Abstract

The sensing device senses deviation of printer character line when power is supplied and stores the value. Compensation is performed when the printing is started according to the stored compensating value automatically to print at correct positions. As compensation is performed automatically, no manual compensating operations are needed. The device comprise a home position sensor (44) attached to a carriage body (42), left and right location marking parts (47,48) fixed on a rear shaft (46). The home position sensor senses home position by moving the carriage body left or right.

Description

Automatically compensated printing method and compensation amount detection device

1 is a schematic diagram of a printer

2 is a schematic diagram of a factor string misalignment compensation device

3 is a flow chart of the present invention

The present invention relates to a method and a device for compensating printout of the printout of the printout of the printout. In particular, the printout of the printout of the printout of the printout is automatically compensated for the printout by measuring the printout of the printout of the printout by the initial operation when the power is supplied to the home sensor. It relates to a detection device.

In general, when using a printer, the left and right argument strings may be distorted. In the conventional case, the left and right argument string distortions are measured by test software, and the measured values are stored in a back up memory. Read this information each time you print each line to compensate for the corresponding error, and install an encoder on the carriage moving part so that the carriage and head speed are as much as the error detected by the encoder whenever the carriage moves each unit distance. There was a way to compensate by adjusting it.

However, in case of using the former method of compensating memory by storing the error amount, there is a problem that it has to be readjusted whenever the error amount is changed due to vibration or temperature environment change, and the method of using a peripheral device such as an encoder is expensive. It had a downside that was the cause of the increase.

Therefore, the object of the present invention is to measure and store the offset correction amount of the print string in the initial operation when the power supply using the home sensor and to compensate for the automatic distortion according to the measured value at the time of printing, there is no need to readjust the change of the error amount The present invention provides an economic compensation method and a measuring device for automatic misalignment.

According to the present invention as described above, in the method of compensating the printing of the print string, the home position is sensed while moving the carriage to the left at the same time as the power supply and then the position is sensed while the carriage is moved to the right, The compensation amount is detected by comparing the calculated value and the measured value, and the value is stored in the buffer, and the factor string is compensated for by the compensation amount.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

1 is a configuration diagram of a printer to which the present invention is applied, and inputs data relating to printer operation from a personal computer (hereinafter referred to as a PC) to execute calculations and corresponding processing therein according to the contents of the data or to generate various control signals. A logic sensor 10 for outputting, a home sensor 44 for detecting the position of the head 43, the carriage 42, the line feed 33, and the carriage 32, and the end of the paper Or a printing mechanism unit 30 including various sensors 35 and the like for sensing each mechanism condition, and a mechanism driving unit 20 controlling the operation of the printing mechanism unit 30 under the control of the logic processing unit 10. Configure.

2 is a structural diagram of a left and right print string misalignment compensation device according to the present invention, in which a home sensor 44 is mounted on a carriage body 42 and a maximum of the carriage body 42 is mounted on a rear shaft 46. Left and right position indicators 47 and 48 are mounted so as to be spaced apart from each other by a predetermined distance within a moving distance, so that the carriage body 42 has an axial direction between the main shaft 45 and the rear shaft 46. Therefore, when moving left and right, the home sensor 44 is configured to detect the position while passing through the left and right position display parts 47 and 48.

3 is a flowchart of the present invention.

The present invention will be described in detail based on the above configuration.

When the power is supplied, the normal printer performs the home position sensing operation of the carriage, so that the compensation amount for measuring the left and right twist amount is determined using this operation. That is, the state of the home sensor 44 is checked in step (3b) while moving the carriage 42 to the left in step (3a). When the position is detected by the home sensor 44, the position at this time is set as the home position of the carriage 42, and each process for setting the carriage home position is performed. After completing step (3c), the carriage moves to the right while counting the position of the next carriage 42 in step (3d), and the state of the home sensor 44 is checked in step (3e). When the location is detected as a result of the check, the process proceeds to step (3f) and compares the value of counting the position of the carriage 42 with a value for the normal left and right distance and stores the difference in the buffer (step 3g). At this time, the value stored in the buffer is the left and right string misalignment amount and the compensation process is performed using this value in the subsequent printing operation.

As described above, without the addition of a separate structure only for the right and left twist amount compensation, the twist amount is measured by the initial operation using the home sensor and automatically compensated, so that a separate measurement for designating the amount of the twist is not necessary and this amount is permanent. There is no need for backup memory for storage and the operation can be done automatically every time the power is supplied. Therefore, there is an advantage that it can always be operated optimally even if the state of the instrument changes.

Claims (2)

In the method of compensating the printout of the printout of the printer, the home position is sensed while moving the carriage to the left at the same time as the power supply, and then the position is sensed while the carriage is moved to the right, and the compensation is calculated by comparing the calculated value with the left and right moving distances. Detecting the amount of the amount, storing the value in a buffer, and compensating for the factor string misalignment as much as the compensation amount. A printer in which a carriage body moves left and right along an axial direction of a main shaft and a rear shaft, the printer comprising: left and right position indicators mounted on the rear shaft to be spaced apart from each other by a predetermined distance within a maximum movement distance of the carriage body; A home sensor mounted on the carriage body and configured to sense a position while passing the left and right position indicators when the carriage body moves left and right along an axial direction of the main shaft and the rear shaft; Means for determining a compensation amount by detecting a difference between the measured distance value between the left and right positions and a calculated value for the left and right movement distances, and a factor string as much as the compensation amount when temporarily storing and printing the compensation amount. A factor string distortion compensation amount detecting device, characterized in that it is configured as a means for allowing the distortion to be compensated.