JPH04149494A - Electrostatic recording device for label printing - Google Patents

Abstract

PURPOSE:To eliminate a waste of continuous recording paper (label) by feeding the continuous recording paper backward after a printed label is cut so that the continuous recording paper is not disengaged from the recording paper conveying means. CONSTITUTION:The continuous recording paper A is used and the recording paper conveying means 13 is arranged between a photosensitive drum 5 and a fixation part 11 so as to prevent the recording paper A from snaking. A form cutting means 4 is arranged at the position which is in front of the fixation part 11 when viewed from the photosensitive drum 5 and meets the requirement that the distance from the photosensitive drum 5 is an integral multiple of the label pitch of the continuous recording paper A. Then the continuous recording paper is fed reversely after the printed label L is cut according to the relation between the distance from the photosensitive drum 5 to the recording paper conveying means 13 and the specific intervals (label pitch C) of respective labels L stuck temporarily on the mount of the continuous recording paper A so that the continuous recording paper A (feed hole) is not disengaged from the recording conveying means 13. Consequently, the waste of the continuous recording paper A (label L) is suppressed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an electrostatic recording device for printing labels, which minimizes the waste of continuous recording paper (labels).

(Prior art and its problems) Printing various information on each label using continuous recording paper, in which labels are cut into appropriate shapes from label base paper, scraps are removed, and temporarily attached to a mount in succession at predetermined intervals. Until now, this has mostly been done using thermal printers, but recently electrostatic recording devices have also been used.

For the type that is temporarily attached on the backing paper without creating any gaps (scraps - unnecessary parts), just by looking at the label or separation cut line,
Die-cut from labels or label base paper, and unnecessary (waste)
The problem with labels that are removed and temporarily attached on a backing paper at specified intervals is that the corners of the label can be rounded or designed in the shape of a circle, triangle, hexagon, flower, etc. The ease of label peeling is determined by the difference in light transmittance between the laminated part of the label and backing paper and the part with only the backing paper. It was chosen and widely used because it can be used as a detection area (temporary attachment interval).

Continuous recording paper A is called fanfold paper as shown in FIG.
There are two types: one that is foldable with perforations M that makes it easy to cut out each unit (each page), and the other that is a so-called roll type. We will explain this using a fanfold paper type as an example, which has the advantage of not requiring a winding mechanism and that it is easy to remove the printed material (label) containing the necessary data from the middle after continuous printing. .

Conventional electrostatic recording devices using fan-fold paper type continuous recording paper are equipped with a plurality of bins that engage and disengage from the feeding hole P in order to prevent the continuous recording paper from meandering between the photosensitive drum and the fixing section. A recording paper transport means is also provided.

When the transfer of the final print data onto the continuous recording paper (label) by the photosensitive drum is completed, the label portion is transported and ejected through the recording paper transport means, the fixing section, and then to a position immediately after the cutter located in front of it. Ru.

In other words, if the print completed label is cut, the unprinted continuous recording paper (label) will have been transported to the front of the cutter, and if printing is performed based on the next data in this state, the photosensitive drum The continuous recording paper (label) that accumulates between immediately after the cutter and immediately before the cutter is wasted.

(Object of the Invention) Therefore, an object of the present invention is to maintain continuous recording while the continuous recording paper (feed hole) does not come off the recording paper transport means after the printed portion of the continuous recording paper (label) is cut by the cutter. To provide an electrostatic recording device for label printing in which waste of continuous recording paper (label) is suppressed as much as possible by feeding paper in reverse.

(Summary of the Invention) The present invention uses continuous recording paper, and in order to prevent the recording paper from meandering, a recording paper transport means is disposed between the photosensitive drum and the fixing section.

Further, the paper cutting means is disposed at a position in front of the fixing section when viewed from the photosensitive drum, and at a position where the distance from the photosensitive tram is an integral multiple of the label distance on the continuous recording paper.

The distance from the photosensitive drum to the recording paper transport means,
After cutting the printed label, the continuous recording paper is reversely fed by a predetermined amount based on the relationship with a predetermined interval (label interval) between each label temporarily attached to the mount of the continuous recording paper.

(Embodiments of the Invention) FIG. 1 shows an electrostatic recording device for label printing using a fanfold paper type as continuous recording paper as an example.
Reference numeral 1 denotes a housing, which is provided with an insertion port 2 and an ejection port 3 for continuous recording paper A, which will be described later.A cutter 4 capable of cutting the continuous recording paper A is formed in the ejection port 3. Further, 5 is a photosensitive drum, 6 is an output light corresponding to image data provided by an electrostatic latent image forming means such as a semiconductor laser or a RED array, 7 is a cleaning brush, 8 is a photosensitive charger, and 9 is a developing device. , 10 is a transfer charger. Furthermore, 11 is a fixing roll, which is composed of a pair of a heat roll 11A and an auxiliary roll IIB.

The above-mentioned continuous recording paper A is made by temporarily adhering labels L, which have been cut out from label base paper and removing scraps, as shown in FIG. A feed hole P is formed.

Further, 12 is a conveying roller, and 13 is a distance b? between the photosensitive drum 5 and the fixing roll 11 from the photosensitive tram 5? ! This is a sprocket wheel in which bins 13a, which are disposed in the same direction as the feed hole P, are disposed at equal intervals on the circumferential surface, and which engage and disengage from the feed hole P. This sprocket wheel 13 has a pair configuration located on both sides of the continuous recording paper A. Reference numeral 14 denotes a well-known paper press plate, which does not rotate but is supported in an appropriate hinge form so that it can be opened and closed to a position where the recording paper A is released and a position where it is pressed.

The cutter 4 described above is set so that the distance a from the photosensitive tram 5 is an integral number (m) times the label pitch C.

Note that the label pitch varies depending on the type (length) of the label, but may be set to a condition that is a common multiple of the types used.

With the above configuration, each operating mechanism such as the electrostatic IT forming means that outputs the output light 6 and the photosensitive drum 5 is controlled and driven by the control device of the entire apparatus (not shown) to transfer desired image information onto the continuous recording paper. This is to be printed and output on the label in A.

In FIG. 1, the continuous recording paper A is conveyed by the conveyance roller 12 from the insertion opening 2 of the housing 1, and the toner image is transferred from the photosensitive drum 1 onto the label L in the transfer charger lO.
The fixing roll ll is transported by the sprocket car 13.
After being fixed, the image is discharged from the discharge port 3.

As shown in FIG. 2, in a steady state where normal printing and forward movement are performed, the steady paper feed signal 21 is transmitted to the paper feed control means 2.
2, and the sprocket wheel 13 is driven to transport the continuous recording paper A in the forward direction via a motor drive circuit 23 and a paper feed motor 24.

Although paper feeding is mainly described, the photosensitive tram 5, sprocket wheel 13, and fixing roll 11 have the same rotational circumferential speed and can be placed in an interlocking relationship as appropriate.

When the transfer of the final print data to the label L is completed, the signal 25 is given to the first fixed value storage means 26 that stores the distance a, and as a result, the cutting position feed signal 27 is generated. 22. The photosensitive drum 5 is
Immediately after the final transfer, the label is placed on the fixing roll 1.
The forward transfer rotation of the sprocket wheel 13 is continued until the sprocket wheel 13 passes through the cutter 1 and is discharged to a position immediately after the cutter 4.

In this state, the printed label and the unprinted label are next to each other after # of the cutter 4, and if the continuous recording paper A outside the discharge port 3 is pulled up diagonally, the cutter 4 can cut the recording paper A. I can do it.

In this cutting operation, a certain resistance is applied to the cutter 4, so this is used as a signal and after a predetermined time, the automatic command means 2
8 is activated to generate a paper reverse feed signal 29.

At this time, the output of the calculation means 32 which calculates the distance stored in the second fixed value storage means 3o and the label pitch C stored in the label pitch setting means 31 is output as a paper reverse feed signal. The continuous recording paper A is fed to the paper feed motor 24 via the paper feed control means 22 and the motor drive circuit 23, and the continuous recording paper A is c×n>b>cX (n-1), where n is a positive integer (n<m). , m is the number of labels from the photosensitive drum 5 to the cutter 4, that is, the sprocket wheel 13 is
rotate in the opposite direction.

As a result, the leading edge of the unprinted portion of the continuous recording paper A (feed hole P) does not come off the sprocket wheel 13 (bin 13a), and the leading edge of a certain unprinted label L faces the photosensitive tram 5. placed.

Note that when the continuous recording paper A is fed backwards, the transfer charger l
O is separated from the photosensitive drum 5, and the heat roll I
It is preferable to separate IA and auxiliary roll IIB.

Further, although it has been described that the generation of the reverse paper feed signal is automatically controlled from the cutter, the generation may be controlled manually.

Furthermore, the recording paper transport means is preferably a sprocket wheel system, in which an endless belt with a bottle formed thereon is hung between two pulleys, and the continuous recording paper is placed on a flat part while the bottle is fed into the hole. A so-called pinto-taffeta type of engagement may also be used.

Further, as continuous recording paper, fanfold paper type is more applicable to roll paper type, but in this case, the recording paper transport means is as follows.

It is replaced by a pair of crimping type rollers.

(Effects of the Invention) As described above, the electrostatic recording device for label printing of the present invention reverses the continuous recording paper after cutting the printed label without removing it from the recording paper transport means. It is possible to minimize the waste of recording paper (labels) and 1.
There will be no inconvenience when printing the next new print.
It is practically effective.

[Brief explanation of drawings]

FIG. 1 is a configuration explanatory diagram showing one embodiment of the present invention, FIG. 2 is a control block diagram of paper feeding, and FIG. 3 is a perspective explanatory diagram showing an example of continuous recording paper. l... Housing 4... Cutter 5... Photosensitive drum 11... Fixing roll 3... Sprocket wheel A... Continuous recording paper S... Mount L... Label C... label pitch

Claims (1)

[Claims] In an electrostatic recording device that uses continuous recording paper in which labels are cut out from label base paper into appropriate shapes and scraps are removed and temporarily attached to a mount at predetermined intervals (label pitch), the photosensitive drum and fixing recording paper transport means for transporting the continuous recording paper disposed between the photosensitive drum and the fixing unit, the distance from the photosensitive drum being an integral multiple of the label pitch; a first fixed value storage means for storing a fixed value of the distance from the photosensitive drum to the paper cutting means; and a distance from the photosensitive drum to the recording paper transport means. a second fixed value storage means for storing a fixed value of; a label pitch setting means for setting the label pitch; and a second fixed value storage means for storing the fixed value stored in the second fixed value storage means and a label set in the label pitch setting means. calculation means for calculating the pitch under predetermined conditions, and after the transfer of the final print data to the label of the recording paper by the photosensitive drum is completed, the pitch is calculated based on the fixed value stored in the first fixed value storage means. , the continuous recording paper is transported in the forward direction by the recording transport means so that the final label, which has been transferred and fixed, reaches a position immediately after passing through the paper cutting means; After cutting the continuous recording paper, the continuous recording paper is cut by the calculation means based on the calculation condition of the minimum value that is an integral multiple of the label pitch larger than the fixed value stored in the second fixed value storage means. An electrostatic recording device for label printing, characterized in that the recording paper is transported in a reverse direction by the recording paper transport means. Calculation condition for the minimum value c×n>b>c×(n-1) b: Fixed value stored in the second fixed value storage means c: Label pitch n: Positive integer