JPH04292360A - Image recording device - Google Patents

Abstract

PURPOSE:To improve a recording speed without impeding accurate cutting of a recording medium by a method wherein the continuously conveyed recording medium is locally temporarily stopped at a cutter part and cut to given lengths and simultaneously the continuous feed speed of the recording medium is varied according to a subsequent cutting length. CONSTITUTION:Feed drive speeds S1-S5 at respective stages are set to a optimum speed so that cutting operation by a cutter part 6 is completed at the continuous feed speed of a recording sheet 1 right before cutting to corresponding cutting lengths 0-L1 and L4 or more is effected and a speed is increased to a high value as much as possible within a range wide enough to allow absorption during a time between completion of preceding cutting operation and subsequent cutting operation. The more the length of the recording sheet conveyed until subsequent cutting operation is effected is namely, the longer the subsequent cutting length L is the more the optimum speed can be. As noted above, since the continuous feed speed of the recording sheet 1 is automatically optimized according to the subsequent cutting length, a recording speed can be improved without impeding accurate cutting of the recording sheet 1.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image recording apparatus for recording on a long recording medium fed out from a roll or the like and cutting the medium into a desired length.

0002

2. Description of the Related Art As shown in FIG. 3, a conventional apparatus of this type includes a recording section 3 that records an image on a long recording paper 1 fed out from a roll 2 by electrostatic recording or the like. , a recording paper transport roller 4 that continuously feeds and drives the recording paper 1 in the longitudinal direction at a constant speed, and a recording paper transport roller 4 that continuously feeds and drives the recording paper 1 in the longitudinal direction, and feeds the continuously driven recording paper 1 to a cutter section 6 and cuts it to a predetermined length. By having a cutter paper feed roller 5 that locally stops the feeding of the recording paper 1 and causes the cutter unit 6 to cut the recording paper 1 at the time of feeding, the recording paper 1 is continuously fed in the recording unit 3. The recording paper 1 was cut to a predetermined length L while maintaining a constant recording speed (for example, Japanese Patent Application Laid-Open Nos. 64-87451 and 1983-
178138, JP-A-56-107276).

In FIG. 3, M1 is a recording paper transport roller 4.
, and M2 is a motor that drives the cutter paper feed roller 5. The motor M2 that drives the cutter paper feed roller 5 operates in conjunction with the cutting operation with the cutter section 6, and drives the roller 5 to feed the recording paper 1 to the cutter section 6 when the cutter section 6 is not performing the cutting operation. On the other hand, when the cutter section 6 performs a cutting operation, the driving of the roller 5 is stopped and the feeding of the recording paper 1 is temporarily blocked before the cutter section 6.

0004

However, with this configuration, there is a problem in that when attempting to increase the recording speed, problems arise when cutting the recording paper.

The above-mentioned problem arises for the following reasons. That is, in the conventional apparatus described above, in order to maintain a constant recording speed, the recording paper is continuously conveyed in the recording section 3 even while the recording paper 1 is locally temporarily stopped for cutting by the cutter section 6. It is carried out in a regular manner. As a result, as shown in FIG. 3, while the cutter section 6 is cutting the recording paper, a deflection A occurs in the recording paper 1 between the cutter section 6 and the recording section 3. If this deflection A is not so large, the recording paper conveyance roller 4
Due to the drive speed difference between the cutter paper feed roller 5 and the cutter paper feed roller 5, the cutter portion 6 absorbs the cut material between the time it finishes cutting and the time it starts the next cut.

However, in order to increase the recording speed, the recording paper 1
If the continuous feeding speed is increased, the deflection A will expand to the extent that it cannot be absorbed, and this will cause problems such as the cutter section 6 not being able to cut accurately.

Furthermore, even if the continuous feeding of the recording paper 1 is not made faster, if the designated cutting length L is short, the deflection A that occurs between cuts will not be sufficiently absorbed, so a similar problem may occur. A problem arises.

As described above, although the conventional apparatus described above can maintain a constant recording speed by continuously feeding the recording paper, the speed that can be maintained cannot be said to be fast.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide an image recording device that can improve the recording speed without causing any problems in accurately cutting the recording medium. do.

0010

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention has a method in which a long recording medium is continuously fed and driven in a recording section, and a recording medium that is continuously fed and driven is The cutter part is configured to temporarily stop the recording paper locally and cut it to a predetermined length, and to vary the continuous feeding speed of the recording medium according to the next cutting length of the recording paper. It is.

[0011]

[Operation] With the above-described structure, the present invention can always suppress the deflection of the recording medium that occurs while the cutter section is cutting the recording medium to within an allowable range, regardless of the length of the recording paper cut. , it is possible to automatically bring the continuous conveyance speed of the recording paper to a speed close to the fastest that can be obtained within the above-mentioned allowable range, improving the recording speed without causing problems such as accurate cutting of the recording paper. It becomes possible to do so.

0012

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In the figures, the same reference numerals indicate the same or corresponding parts. FIG. 1 shows a schematic configuration of an image recording apparatus according to an embodiment of the present invention, in which 1 is a long recording paper, 2 is a roll for feeding out the recording paper 1, and 3 is an electrostatic charge applied to the recording paper 1. 4 is a recording paper transport roller that continuously feeds and drives the recording paper 1 in the longitudinal direction; M1 is a drive motor for the recording paper transport roller 4; 5 is a continuous M2 is a drive motor for the cutter paper feed roller 5, which feeds the recording paper 1 being fed and driven to the cutter section 6 by a pre-designated cutting length L.

Further, reference numeral 11 is a console unit for presetting the cutting length L of the recording paper 1 to be cut by the cutter unit 6 for each cut, and 12 is a RAM (for writing at any time) that stores the preset cutting length L. Possible storage devices:
13 is a ROM (read-only storage device: second storage unit) that stores a plurality of speed data in a table format so as to be searchable from the cutting length L, and 14 is stored in advance in the RAM 12. A speed control section 15 is a cutter paper feed roller 5 that variably sets the continuous feeding drive speed of the recording paper 1 by the recording paper transport roller 4 based on speed data retrieved from the ROM 13 based on the stored cutting length L. 16 is a microcircuit-based CPU (Central Processing Unit) that centrally controls the operation of each section, and 17 is an interface section that connects the CPU 16 and the console section 11.

Although the conveying path of the recording paper 1 is shown as a straight line in the illustrated example for ease of understanding, it may take various forms in an actual apparatus. Furthermore, in the case of a color recording method, for example, the recording paper 1 is fed and driven while repeatedly moving forward and backward, but as a whole, feeding in the recording section 3 is performed continuously.

The operation of the image recording apparatus configured as described above will be explained below. FIG. 2 is a graph showing the relationship between the cutting length L of the recording paper 1 and the continuous feed drive speed S. In the example shown in the figure, the cutting length L is (0 to L
It is designed to be set arbitrarily from among the five classes from 1) to (L4~), and the feed drive speed S is automatically variably set in five stages from S1 to S5 accordingly. It has become.

The feed drive speeds S1 to S5 at each stage are continuous feed speeds of the recording paper 1 immediately before cutting is performed by the corresponding cutting lengths (0 to L1) to (L4 to), respectively, and are The optimum speed is such that the deflection A of the recording paper 1 that occurs during the cutting operation of the cutter section 6 is as fast as possible within the range that can be absorbed between the end of the cutting operation of the cutter section 6 and the start of the next cutting operation. is set to . This optimum speed can be increased as the length of the recording paper that is fed and driven until the next cutting operation is performed, that is, as the next cutting length L becomes larger.

As described above, the continuous feeding speed of the recording paper 1 is automatically optimized according to the next cutting length of the recording paper 1, so that the recording paper 1 can be cut accurately. It becomes possible to improve the recording speed without causing any problems.

The embodiments in which the present invention is applied to a device for recording images have been described above, but the present invention can also be applied to, for example, a printer that records characters on a long recording paper. can.

[0020]

Effects of the Invention As is clear from the above description, the present invention allows a long recording medium to be continuously fed and driven in a recording section, and at the same time, the recording medium that is continuously fed and driven is transferred to a cutter section. By temporarily stopping the recording medium locally and cutting it at a predetermined length, and by varying the continuous feeding speed of the recording medium according to the next cutting length of the recording paper,
The deflection of the recording medium that occurs while the cutter section cuts the recording medium can be kept within the allowable range regardless of the length of the recording paper cut, while the continuous conveyance speed of the recording paper can be automatically brought to the optimum speed that is close to the fastest that can be obtained within the above tolerance range.
This has the effect that the recording speed can be increased without causing problems in accurately cutting the recording paper.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of an image recording device according to an embodiment of the present invention.

[Figure 2] Graph showing an example of the operation of the main part of the present invention

[Fig. 3] Schematic configuration diagram of a conventional image recording device

[Explanation of symbols]

1. Long recording paper 2 Recording paper roll 3 Recording Department 4 Recording paper conveyance roller 5 Cutter paper feed roller 11 Console section 12 RAM (first storage section) 13 ROM (second storage unit) 14 Speed control section 15 Cutter control section 16 CPU (Central Processing Unit) 17 Interface section L Cutting length S Feed speed A. Deflection of recording paper

Claims (1)

[Claims] Claim 1: A recording unit that records on a long recording medium; a conveying means that continuously drives the recording medium in the longitudinal direction; An image recording device comprising: a cutter section that temporarily stops the recording medium to cut the recording medium to a desired length; and a control means that changes the speed at which the recording medium is continuously fed by the conveying means according to the next cutting length of the recording medium. Device.