JPH04144872A - Electrostatic recording device for label printing - Google Patents

Abstract

PURPOSE:To prevent the looseness of a continuous recording paper on this side of a fixing roll by setting the transfer speed of a recording paper transfer means to the accelerating state of the ratio of 101-103 to the transfer speed 100 by the fixing roll. CONSTITUTION:A continuous recording paper A is carried from the left of a photosensitive drum 1, toner images are transferred on labels L and fixed by a fixing roll 8, and then the paper A is discharged through a pin tractor system 10. The paper A has the labels L temporarily fixed on a base sheet S at determined intervals, and as the part of only the base sheet S has a low frictional coefficient as the coat surface of a releasing agent, and the part of the label L is thick, there is the possibility of causing a slippage at the time of passing the roll 8 to loose the paper A on this side of the roll 8. However, in the system 10 disposed in the rear of the roll 8, as the transfer speed V2 for the paper A is set to the accelerating state within the range of the ratio of 101-103 to the transfer speed V1=100 by the roll 8, the traction force is worked to prevent the generation of the slippage, and the looseness of the paper A on this side of the roll 8 can be suppressed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an electrostatic recording device for label printing in which a phenomenon in which continuous recording paper loosens before a fixing roll is suppressed.

(Prior art and its problems) Printing various types of information on each label using continuous recording paper, in which labels are cut into appropriate shapes from label base paper and temporarily attached to a backing paper, has been difficult until now. (In this case, thermal printers are used to do this, but recently electrostatic recording devices have also been used.

For labels that have only a separation cut line and are temporarily attached to the backing paper without any gaps (waste = unnecessary parts),
For labels that are die-cut from label base paper and temporarily pasted on a backing paper at predetermined intervals after removing unnecessary parts, the corners of the label may be rounded (or formed into a circular shape). There are problems such as triangular, hexagonal, flower-shaped designs, etc., the ease of label peeling, and the difference in light transmittance between the laminated part of the label and backing paper and the part with only the backing paper, so there is no need to attach special marks. This method was chosen and widely used because the mount-only portion can be used as the detection area for the label pitch (the interval between each label being temporarily attached to the mount).

As shown in Fig. 2, the continuous recording paper A is made by temporarily adhering the labels L, which have been removed from the die-cut label paper, onto the mount S at predetermined intervals. is generally exposed as a surface coated with a silicone release agent.Furthermore, the thickness is different between the laminated part of the label L and the backing paper S and the part where only the backing paper S is formed.

In an electrostatic recording device, generally, the rotational peripheral speeds of the photosensitive drum and the fixing roll are made to be completely the same, and this becomes the transport speed of the continuous recording paper.

Then, when the continuous recording paper A as described above is loaded into a conventional electrostatic recording device and the row side is performed, at the time when the continuous recording paper A passes through the fixing roll, only the portion of the backing paper S is exposed to the release agent. This may be due to the fact that the fixing roll (heat roll) moves up and down when switching from a laminated part of label L and backing paper S to a part with only backing paper S, or vice versa. Slip occurs between the fixing roll and continuous recording paper A.

As a result, the amount of conveyance of the continuous recording paper is smaller at the fixing roll portion than at the photosensitive drum portion, and the continuous recording paper becomes slack before the fixing roll. If this phenomenon is accumulated during continuous printing, it may cause problems such as paper jams.

(Object of the Invention) In view of the above-mentioned drawbacks of the conventional devices, an object of the present invention is to provide an electrostatic recording device for label printing that can prevent continuous recording paper from becoming slack before the fixing roll. .

(Summary of the Invention) The continuous recording paper A is called fanfold paper as shown in FIG. Perforation M
There are two types: one that can be folded and the other that is a so-called roll type. In this case, after printing different types of data consecutively, the printed material (label) of the necessary data is torn off in the middle. The target is a fanfold paper type that has advantages such as being easily removed and not requiring a winding mechanism.

Therefore, in order to ensure that the leading edge of the continuous recording paper is set on the fixing roll, and to prevent the recording paper from meandering even after passing from the photosensitive drum to the fixing roll, the fixing roll is fixed as seen from the photosensitive drum. A recording paper transport means for transporting the continuous recording paper by engaging with and disengaging from the feeding hole is disposed at the position where the continuous recording paper passes.

Then, the transport speed of the recording paper transport means for the continuous recording paper is set to 10% relative to the transport speed of the fixing roll of 100.
The speed increasing state is set at a ratio of 1 to 103 to prevent the continuous recording paper from loosening before the fixing roll.

(Embodiment of the Invention) Fig. 1 shows an electrostatic recording device for label printing using fanfold paper type as continuous recording paper, 1 is a photosensitive drum, 2 is an electrostatic recording device such as a semiconductor laser or an LED array, etc. Output light according to image data provided by the latent image forming means; 3 is a cleaning brush; 4 is a photosensitive charger; 5
6 is a developing device, and 6 is a transfer charger.

Further, 8 is a fixing roll, which is composed of a pair of a heat roll 8A and an auxiliary roll 8B.

Furthermore, A places the labels L cut out from the label base paper as shown in FIG.
This continuous recording paper is temporarily attached to a mount S and has feeding holes P formed on both sides of the mount S.

Reference numeral 10 denotes a well-known bin tractor mechanism, which is comprised of an endless belt 11 on which bins 11a, which engage and disengage from the feed holes P, are arranged at equal intervals, pulleys 12, 13, and a paper press plate 14.

Furthermore, 16 is a motor that drives the fixing roll 8, and a timing belt 17 drives the fixing roll 8 (auxiliary roll 8).
B).

The fixing roll 8 and the bin tractor mechanism 11 are connected by a timing belt 18, and when the rotation circumferential speed V of the fixing roll 8 is 100, the endless belt 11 is
The rotation peripheral speed v2 of the pulley 12 is set to an increased speed within a ratio range of 101 to 103. As a specific example of this setting, it can be achieved by selecting the diameter ratio of each portion on which the timing belt 18 is hung.

With the above configuration, each operating mechanism such as the electrostatic latent image forming means that outputs the output light 2 and the photosensitive drum 1 is controlled and driven by the control device of the entire apparatus (not shown) to continuously record desired image information. This is to be printed on label L on paper A and output.

Continuous recording paper A is conveyed from the left side of photosensitive drum 1 in FIG. It passes through the mechanism 10 and is discharged to the right.

Here, the continuous recording paper A is as shown in FIG.
There are intermittent parts where only the backing paper S is applied, and the friction coefficient is low because it is exposed as the surface coated with the release agent. Therefore, when passing through the fixing roll 8, the fixing roll 8 (heat roll 8A) moves up and down, causing a slip between the fixing roll 8 and the continuous recording paper A.
There is a possibility that the continuous recording paper A becomes loose before the fixing roll 8.

However, in the present invention, the bin tractor mechanism 10 disposed behind the fixing roll 8 has a transport speed v2 for the continuous recording paper A of 101 to 100: Since the speed is set to increase within the range of lO3 ratio, a traction force acts to prevent the above-mentioned slip and suppress the slack of the continuous recording paper A before the fixing roll 8. It is possible.

As a result of experiments, when the transport speed V of the continuous recording paper A by the bin tractor mechanism 10 is set to a ratio exceeding 103 to the transport speed V of the fixing roll 8, =100, the continuous recording paper A becomes The traction force is too strong and the perforation M
Since there were cases where separation occurred in the , the ratio was kept down to 103.

In the embodiment, the recording paper transport means is shown as a bin tractor mechanism, but it may also be in the form of a sprocket wheel in which a bin is provided on the circumferential surface of a rotating body.

(Effects of the Invention) The present invention provides an electrostatic recording device for label printing that uses continuous recording paper in which labels from which die-cut scraps have been removed from label base paper are temporarily attached to a backing paper at predetermined intervals. A recording transport means is disposed in the recording paper transport means, and the transport speed of the continuous recording paper by the recording paper transport means is set to be increased in a ratio range of 101 to 103 with respect to the transport speed of the fixing roll of 100. , it is possible to prevent continuous recording paper from slipping on the fixing roll, to suppress slack in front of the fixing roll, and to avoid problems such as paper jams due to slack.

[Brief explanation of the drawing]

FIG. 1 is a configuration explanatory diagram showing an embodiment of the present invention, and FIG. 2 is an explanatory perspective view showing an example of continuous recording paper. 1... Photosensitive drum 8... Fixing roll lO
... Bin tractor mechanism 16 ... Motor 17, 1
8...Timing belt Figure 2

Claims (1)

[Scope of Claims] An electrostatic method using continuous recording paper in which a label is cut into an appropriate shape from a label base paper, scraps are removed, and is continuously temporarily attached to a backing paper, and feeding holes are formed on both sides of the backing paper. In the recording apparatus, a recording paper transport means is disposed behind the fixing roll when viewed from the photosensitive drum and engages with the feeding hole to transport the continuous recording paper, and the fixing roll has a transport speed of 100 with respect to the continuous recording paper. An electrostatic recording device for label printing, characterized in that the transport speed of the recording paper transport means is set to an increased speed ratio of 101 to 103.