JPH0216224B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of the invention disclosed in Japanese Patent Application No. 56-32857, in which a predetermined amount of the web is pulled back to the storage section according to a command from a control device, and the web is pulled out from the storage section again for printing. It is.

In the original invention, when the paper web was pulled back, there was a problem that the paper web could come into contact with other devices in the print/recording device and become dirty, or it could not be sent out again to print. The present invention has been made with the object of solving this problem and improving the paper roll to make it easier to pull back and feed out the paper roll.

Therefore, the printing and recording device of the present invention includes: a roller having a diameter whose circumferential length is a well-defined numerical value; a servo motor that rotates this roller forward or backward by a predetermined amount; and a push roller that presses the roller. It consists of a paper roll that is sandwiched between this pressure roller and the roller, a storage section that stores the paper roll that is sandwiched between the roller and the pressure roller, and a printing device that prints on the paper roll. The roll paper is rotated and printed by the printing device, and then the roller is reversed by a servo motor, pulled back by a predetermined amount, and temporarily stored in the storage section.The roller is then rotated forward again by the servo motor, and the roll paper pulled out from the storage section is printed by the printing device. The storage section is equipped with a switch, and when the switch is actuated by the web, the unprinted web is fed into the storage section.

The present invention will be explained based on the figures illustrating the invention. 1st
In the figure, rails 3 and 4 are fixed between the machine frames 1 and 2, and frames 6 and 7 of the carriage 5 are attached to the rails 3 and 4.
is supported via a slide ball bearing rig, etc.
The carriage 5 is a servo motor 1 fixed to the machine frame 1 with a screw 9 screwed into a nut 8 fixed to the frame 6.
The carriage 5 moves by rotating at zero, and the position of the carriage 5 is fed back to a control device (not shown) by an encoder 11 or the like. roller 12
The structure is a reference roller 1 fixed with a pin etc. to a shaft 15 supported by bearings 13 and 14 fixed to frames 6 and 7.
The diameters of the reference rollers 16 and 17 are made up of a rubber roller 18 which has the same diameter as the reference rollers 16 and 17 but has a slightly larger diameter. For example, if the diameter is set to 19.108 mm, the circumference is approximately
It will be 60mm. A worm wheel 19 is fixed to the end of the shaft 15. This worm wheel 19 has 30 teeth, and a single worm 20 that meshes with the worm wheel 19 is attached to a bracket 21 fixed to the frame 7. The stepping motor 22 has a step distance of 1.8
The reference roller 1 rotates through the shaft 23 by
The circumference of 6 and 17 moves 0.01 mm. A clutch 24 is provided at the other end of the shaft 15, and an armature portion 25 of the clutch 24 is connected to a bracket 26 fixed to the frame 25.
A shaft is connected to a potentiometer 27 attached to the shaft by a coupling ring 28, and a bearing 31 is connected to the shaft 30.
A pressure roller 33 supported by a shaft 32 is provided, and a shaft 30 is supported at the tips of levers 36, 37 which are pivoted on bins 34, 37 fixed to frames 6, 7. Spring 3 stretched between levers 36, 37 and frames 6, 7
The pressure roller 33 pinches the web 101 between it and the roller 12 due to the elasticity of the rollers 8 and 39. The structure is the same as that of the roller 40, and consists of reference rollers 44, 45 fixed to a shaft 43 supported by bearings 41, 42 in the frames 6, 7, and a rubber roller 46. A worm wheel is attached to the end of the shaft 43. 47 is fixed, and a bearing 5 is attached to the shaft 49, which engages with a worm 48 fixed to the shaft 23.
A pressure roller 52 supported by pins 0 and 51 is provided, and a shaft 49 is connected to the bins 53 and 54 fixed to the frames 6 and 7.
The roll paper 101 is supported by the tips of levers 55 and 56 pivoted on the roller 40 and the pressure roller 5 by the elasticity of springs 57 and 58 stretched between the frames 6 and 7.
2 and the paper roll 101 is sandwiched therebetween and sent or pulled back. A storage section 62 for temporarily retaining the pulled-back paper roll 101 is supported on the frames 6 and 7 by support members 63 and 64, and is provided with a switch 120.
This switch 120 is actuated when the web 101 becomes taut, causing the pinch roller 65 to feed the web 101 into the storage section 62. pinch roller 6
5 has bearings 66 and 67 fixed to frames 6 and 7.
An elastic roller 69 is provided on the shaft 68 supported by the shaft 6.
8 is taken out of the frame 6, and parallel plane parts 70 and 71 are created there. Then, the pipe 7 is connected to the shaft 73 of the motor 72 with a reducer attached to the machine frame 1.
4 is fixed, and a joint 75 is fixed to the tip of a pipe 74. A roller 77 pivoted on a shaft 76 fixed to this joint 75 is in contact with flat parts 71, 72 of the shaft 68, and a shaft that moves together with the carriage 5. Motor 7 to 68
The pressure roller 78, which transmits the rotation of 2, is rotatably supported by a shaft 79 with a bearing, and the shaft 79 is connected to a lever 82, which is pivoted to the bins 80, 81 fixed to the frames 6, 7.
It is supported at the tip of 83. The pressing roller 78 is a spring 8 stretched between the levers 82, 83 and the frames 6, 7.
4.85 elasticity makes the web 101 and the elastic roller 69
to press. Now, when the switch 120 is activated, the motor 72 is activated and the pinch roller 65 feeds the web 101 into the storage section 62. Reference numeral 59 denotes a stay pipe, which is fixed to the frames 6, 7 and nuts 60, 61 so that the screw 9 is inserted into the stay pipe 59. This stay pipe 59 is attached to the frame 6 which is moved by the nut 8. By transmitting force to the frame 7, the frames 6 and 7 are moved integrally.

Next, a device for winding up the web 101 after printing and recording will be explained. A pulley 88 is fixed to one end of the frame 7 and a shaft 87 that is pivotally supported by a bucket 86 fixed to the frame 7, and a spring belt 90 is stretched between the pulley 89 fixed to the end of the shaft 15, and the shaft 15 is rotated. The rotation is transmitted to the shaft 87. A spring 92 is inserted into a hole 91 provided at the other end of the shaft 87, and one end of the shaft 93 is received.Transmission is transmitted to the shaft 93 via a pin 94 fixed to the shaft 93. Supported by a center screw 95 provided in the frame 6,
The paper roll 101 that has been printed is wound onto a cylinder 98 supported by cones 96 and 97 on shafts 87 and 93. Referring to FIG. 2, the platen 99 will be explained.
This platen 99 utilizes Utility Model Registration No. 1258656. Pull out the blanket 102 rolled up and placed in the blanket case 100 provided on the platen 99 from the groove 103.
Its end is fixed to the platen 99 with a clamp bar 104, and the area near the groove 103 is fixed to the platen 99 with a clamp bar 105. Then, as the pressure bar 107 is moved toward the groove 106 of the platen 99, the elastic force of a spring (not shown) is applied. When the surface hardness of the blanket 102 reaches approximately 90 on a rubber hardness meter, the press bar 107 is fixed to the platen 99.
The position of surface 9 is screws 109, 110, 111,
Bracket 108 with 112 fixed to frames 6 and 7
(Fig. 3) and adjust the bolt 113,
Fixed at 114. The printing device is Blanket 1
02, the carbon tape 115 is placed in the groove 116.
A plurality of carbon tapes 115 of different colors are provided on the machine frames 1 and 2 so that they can be moved to the guide pans 117 by passing them through a plurality of grooves 116. You can also do it. Then, arbitrary characters are selected from the storage plate 119 containing the characters 118 and printed.

According to the present invention, when the roll paper is sandwiched between the roller having a diameter that has a well-defined circumferential length and the pressure roller, and printing records are piled up by repeatedly feeding and pulling back, the roller is Even if step feeding is performed using a stepping motor, or the amount of rotation of the roller is measured using a potentiometer or an encoder, it is possible to set the web at the position necessary for printing and recording. A storage section is provided near the rollers, and the web is pulled back into the storage section or fed out from within the storage section, thereby preventing the web from getting caught in other devices or folded. Now I can move forward and backward smoothly without any problems. In addition, a switch installed in the storage section detects the amount of paper rolls in the storage section, and when the amount of paper rolls is low, another pinch roller feeds a new paper roll into the storage section.
It can be made smooth.

In the embodiment, there is a platen and two sets of rollers, but one roller can serve both as the platen and for feeding and pulling back the web.

Additional relationship Original invention patent No. 1502320 (Japanese Patent Publication No. 63-51108
No. 1), a tension device applies tension to the web paper in the direction of the take-up shaft side and the roll side, and a vertical feed drive device causes vertical feeding between the take-up shaft direction and the roll direction, and a lateral feed drive device causes the vertical feeding. A printing method in which vertical writing, horizontal writing, and printing in multiple columns are arbitrarily selected and performed continuously by horizontal feeding perpendicular to the direction. The diameter of the roller for feeding the web is determined so that the length of the circumference is a well-defined positive integer, a storage section for the web is provided near the roller, and the web drawn back by the roller is stored in the storage section. It is designed to print and record by repeatedly storing the paper and sending it out again. Furthermore, a switch is provided in the storage section so that when it is detected that there is no paper web in the storage section, a new web is fed into the storage section using a pinch roller, thereby preventing the tension on the rollers from fluctuating. be.

[Brief explanation of drawings]

FIG. 1 is a front view of the present invention, showing a section of the main part thereof, FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1, and FIG. 3 is a view taken along arrow B in FIG. 4 can be printed on a web using the present invention. Vertical type,
It is a diagram of a printing example showing that printing can be performed in horizontal writing, in multiple left and right columns, and in multiple upper and lower columns. 40...Roller, 52...Press roller, 62...
... Storage section, 65 ... Pinch roller, 101 ... Rolling paper, 120 ... Switch, 22 ... Servo motor.

Claims (1)

[Scope of Claims] 1. In a printing device that prints vertically, horizontally, multiple columns, etc. by pulling back the web by a predetermined amount according to a command from a control device, the circumference length can be set to a value with good separation. a servo motor that rotates this roller forward or backward by a predetermined amount, a pressing roller that presses the roller, a web that is fed between the pressing roller and the roller, and a web supply for the roller. A storage section that stores the paper roll that has been sandwiched and pulled back between a roller and a pressure roller installed near the side, a printing device that prints on the paper roll, and a servo motor that rotates the roller in the normal direction to print on the paper roll that has been printed by the printing device. a control device that uses a servo motor to rotate the roller in reverse, pulls back a predetermined amount, temporarily stores it in the storage section, rotates the roller in the normal direction again using the servo motor, and uses a printing device to print, etc. on the web pulled out from the storage section. A print recording device characterized by: 2. The storage unit includes a detection device such as a switch that can detect the remaining amount of the web in the storage unit, an elastic roller for feeding the web without printing into the storage unit, and a pressure roller. A printing and recording device according to claim 1.