JPS59164174A - Printer apparatus - Google Patents

Abstract

PURPOSE:To simplify a gap adjusting mechanism, by arbitrarily setting the operation of a printing head by using the power and control for allowing a printing head to operate vertically to a paper surface in the power and control of a new line or printing in common. CONSTITUTION:When paper 2 is set, an A-clutch 9 is connected directly prior to printing and a printing head 1 advances toward a paper surface by the rotation of a servo motor 11 while the speed lowering thereof caused by the contact with the paper surface is detected by a speed detector 17, an abnormal speed set value 16 and a comparator 18 and the contact is judged in a judge part 19. When the contact is judged, the stopping and reverse rotation of the servo motor 11 are indicated by a speed indicating part 20 and a rotation amount indicating part 21 and the printing head 1 is retracted in a predetermined amount to form a predetermined amount of a gap between said head 1 and the paper surface. In this case, during printing operation, the A-clutch 9 is turned OFF while a C-clutch 7 is turned ON and a carrier 14 is horizontally moved by the rotation of the servo motor 11. By this mechanism, a gap adjusting mechanism becomes simple and an operation speed or an operation amount can be arbitrarily set.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention The present invention relates to a sid' printer device, and more particularly to a printer device equipped with a gap adjustment mechanism between a sheet of paper and a print head.

Conventional printers are known to have a structure in which a roller is provided at the tip of the print head, and the roller presses the paper through a paper presser plate to maintain a constant gap between the print head and the paper surface. However, in the case of conventional devices, the gap adjustment mechanism is complicated and takes up mounting space.

OBJECTS OF THE INVENTION An object of the present invention is to eliminate the above-mentioned closed points, and to provide a printer device in which the gap adjustment mechanism is simple and the adjustment operation can be arbitrarily set by a program of a control device. There is a particular thing.

In order to achieve the above object, the printer device of the present invention shares the power and control of the mechanism that moves the print head perpendicular to the paper surface with the movement and control that drives other elements such as the line feed mechanism and the printing mechanism. It is characterized by a simple structure and the ability to arbitrarily set the operation settings.

EMBODIMENT OF THE INVENTION AND ITS EFFECTS An embodiment of the present invention will be described in detail below with reference to the drawings.

The configuration diagram of the apparatus shows a perspective view of the main parts of the printer apparatus according to the present invention and a block diagram of the control system.

The workers of the servo motor 11 are A clutch 9 and B clutch 8.
, and are taken out by the C clutch 7.

The worker taken out by the A clutch 9 retracts the print head l via the belt 10° sign 12 and rack 13. The worker who took out with B clutch 8 is belt 5
, the paper 2 is fed through the rollers 3.

The worker taken out by the C clutch 7 performs a feeding operation of the carrier 14 via the wire 6. The servo motor 11, clutches 7, 8, 9, etc. are controlled by a control unit 2 that operates according to a program.
3. It is controlled by a control system composed of a drive circuit 25 and a power supply 24.

Operation of the apparatus When setting the paper 2, the print head 1 is in a state separated from the paper surface. When paper is set, the A clutch 9 is connected immediately before printing, and the rotation of the servo motor 11 moves the print head 1 forward in the direction of the paper. When the print head hits the paper, a decrease in the speed of motor 11 is detected by speed detector 17, abnormal speed setpoint 16, and comparator 18. When the determination unit 19 connected to the comparator 18 detects that the print head 1 has hit the paper surface, the speed indicator 2o and the rotation amount indicator 21 stop the servo motor 11 via the drive circuit. and a reverse command is output. As a result, the print head 1 is moved back by a predetermined amount, and a gap of a predetermined amount is formed between the print head 1 and the paper surface.

During the printing operation, the A clutch 9 is switched to the "disengaged" state and the C clutch 7 is switched to the "on" state, and the carrier 14 is moved in the horizontal direction by the rotation of the servo motor 11. At this time, the speed of the servo motor 11 is controlled based on the speed command value 15 of the control device 23.

If the printing operation continues after printing one line, press C.
Clutch C is switched to "disengaged" and clutch B 8 is switched to "on", and the rotation of servo motor 11 is transmitted to roller 3 to feed paper 2. At this time as well, the speed of the servo motor 11,
The rotation amount is controlled by a speed command value 15, a speed instruction section 20 rotation amount indicator 21, and the like.

Effects of the Invention As is clear from the above explanation, according to the present invention, the power and control for moving the printing gutter perpendicular to the paper surface can be shared with the power and control for other line feeds, printing, etc. This has the effect that the operation speed and amount of operation can be set arbitrarily.

[Brief explanation of the drawing]

The figure shows one embodiment of a printer device according to the invention. 1... Print head, 2... Paper, 3... Roller, 4... Platen, 5... Belt 1
3. 6...Wire, 7...Clutch C, 8...
...Clutch B19...Clutch A% 10.
... Belt A111 ... Servo motor, 12. Pinyon, 13 ... Rack, 14 ... Carrier, 15 ...
Speed command value, 16...Abnormal speed setting value, 17.
... Speed detector, 18... Comparator, 19... Judgment section,
2o... Speed instruction section, 21... Rotation amount instruction section, 22
...clutch connection instruction 23...control device, 24.
...Power supply, 25...Drive circuit, Tibetsu patent attorney Takahashi f) Busy

Claims (1)

[Claims] 1. In a printer device that performs printing on printing paper set on a platen while moving the print head in the longitudinal direction of the platen, a driving means for moving the print head back and forth in a direction perpendicular to the platen; a detection means 2 for detecting that the advance of the head toward the platen is blocked; a print head control device for controlling the drive means so as to move the print head backward by a predetermined distance in response to a detection signal from the detection means; A printer device comprising: