JPH0670358U - Cutter arrangement structure of image recording device - Google Patents

Abstract

(57) [Summary] [Purpose] In an image recording apparatus that employs the U-turn discharge method for recording paper, various problems in the case where a cutter unit is provided near the recording paper discharge opening on the exit side of the U-turn discharge path, That is, the arrangement structure of the cutter unit is provided, which can solve the problem that the recording paper set becomes complicated and the pullback length of the unprinted recording paper becomes long. [Structure] A recording paper P fed from a built-in roll paper R and printed by a thermal head 4 of a recording unit is made U in an apparatus main body.
A cutter unit 5 for cutting the printed recording paper P in the image recording apparatus that is turned and ejected.
Is provided in front of the U-turn discharge path 15 that makes the recording paper P make a U-turn.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an arrangement structure of cutters in an image recording apparatus such as a facsimile machine which uses a roll paper as a recording paper and makes a U-turn of a recorded recording paper to eject it.

[0002]

[Prior art]

 In a facsimile machine of the type that uses roll paper as the recording paper, as a measure to reduce the protruding length of the recording paper tray installed in the main body of the device and to reduce the installation space of the entire device, it is fed out from the built-in roll and recorded. It is aimed to make a U-turn of the recording paper printed by the unit inside the main body of the apparatus and eject it to the recording paper ejection section provided on the upper surface of the main body.

FIG. 5 shows an outline of a recording paper ejection mechanism in a facsimile apparatus which adopts the recording paper U-turn ejection system. The recording paper ejection mechanism is fed from a built-in roll paper R by a platen roller 3 arranged in a recording section. The recording paper P printed by the thermal head 4 pressed against the lower surface of the platen roller 3 is passed through a curved paper path passage (U-turn discharge path) 15 provided in front of the recording paper P, and the upper recording paper is passed. It is designed to be discharged from the discharge port 8. Then, in the case of a cutter-equipped machine that cuts the recording paper P into a predetermined received document size, the cutter unit 5 is provided in the vicinity of the recording paper discharge port 8 as shown in FIG. Is normal.

[0004]

[Problems to be solved by the device]

 However, in the case where the cutter unit 5 is provided at a position near the normal discharge port by the above-described recording paper U-turn discharge method, that is, at a position after the print recording paper P has passed through the U-turn discharge path 15, It causes various problems as listed.

At the time of initial setting of the recording paper P, the leading end of the recording paper fed from the roll paper R is electrically connected to the cutter unit 5 through the U-turn discharge path 15 from above the thermal head 4 of the recording unit, and the remaining end of the recording paper is It is necessary to cut the long portion, but at that time, the recording paper P has to be manually inserted through the curved U-turn discharge path 15, which makes the recording paper setting very complicated. Become. Further, when the recording paper jam occurs, it is very troublesome to clear the jam in the U-turn discharge path 15 that guides the recording paper P to the cutter unit 5.

When the recording paper P is initially set or when the printed recording paper P is cut to the size of the received document, the discharged recording paper Pout is dropped and discharged from the recording paper discharge port 8 as it is, and the unprinted recording paper Pout is discharged. As shown in FIG. 6, P must reverse the platen roller 3 of the recording unit so that the leading end of the platen roller 3 is returned to a position near the thermal head 4, which is the print start position of the next received document. However, when the thermal head 4 and the cutter unit 5 are provided at the separated position via the U-turn discharge path 15, the pullback length of the recording paper P becomes long, and when the received document is continuously printed, the pullback is performed. This causes a problem that printing loss time becomes long.

In connection with the above, when the pullback length of the recording paper P is long, the slack Pw of the recording paper P pulled back to the roll paper R side becomes large as shown by the chain double-dashed line in FIG. The recording paper P is likely to have a standby habit, and a jam is likely to occur when the recording paper P is delivered.

The present invention provides an image recording apparatus in which the arrangement of a cutter unit provided in the recording paper discharge path is devised in order to solve the above problems pointed out when the recording paper U-turn discharge system is adopted. It is a thing.

[0009]

[Means for Solving the Problems]

 As a means for achieving the above object, the present invention provides an image recording apparatus in which a recording paper fed from a built-in roll paper and printed by a recording unit is made to make a U-turn in the apparatus main body to be discharged. A cutter unit that cuts the printed recording paper is provided in front of the U-turn discharge path that makes a U-turn of the recording paper.

[0010]

[Action]

 In the case where the cutter unit is provided in front of the U-turn discharge path, the recording paper printed in the recording unit is cut by the cutter unit and then U-turned and discharged. If the cutter unit is installed in front of the U-turn discharge path together with the recording section, the recording paper can be set without passing through the U-turn discharge path, and after the printed recording paper is cut by the cutter unit, A short pullback length is required when pulling back the leading edge of the printing paper to the printing start position near the printing unit.

[0011]

【Example】

 FIG. 1 shows an outline of a roll paper built-in type facsimile apparatus constructed by applying the present invention, and FIG. 2 shows a state in which a recording paper cover 9 of FIG. 1 is opened.

In this facsimile apparatus, a roll paper R formed by winding a long recording paper (thermal paper) around a paper tube is rotatably mounted in a recording paper storage box 2 provided at the rear end of the device body 1. Is set. The recording paper P is fed from the built-in roll paper R by the platen roller 3 provided in front of the built-in roll paper R through the paper path passage 13 and is printed by the thermal head 4 pressed against the lower surface of the platen roller 3. Subsequently, the printed recording paper P printed by the thermal head 4 is guided to the cutter unit 5 immediately after it through the paper path passage 14 and cut, and the printed / cut recording paper P is placed in front of it. After passing through a curved paper path passage (U-turn discharge path) 15 formed between the paper guides 12a and 12b of the paper guide to make an upward U-turn, a paper discharge roller 6 and a pinch roller 7 are provided at the exit thereof. The recording paper is discharged from the recording paper discharge port 8 on the recording paper discharge portion 10 provided in the recording paper cover 9 that covers the upper surface of the main body from the recording paper discharge port 8.

Here, the thermal head 4, the cutter unit 5, and the paper guides 12 a and the like arranged below the paper path passages 13, 14, 15 are attached to the apparatus main body 1 side, while the platen roller 3 2, the discharge roller 6, the pinch roller 7, and the paper guide 12b disposed above the paper path passages 13, 14 and 15 are the same as those shown in FIG. 2 except those formed integrally with the cutter unit 5. , Attached to the recording paper cover 9 side.

The recording paper cover 9 has hinge portions 11 on both sides of the rear end portion of a cover frame (not shown) pivotally supported on the apparatus main body 1 to cover the recording paper storage box 2 and a recording paper discharge path in front of the recording paper storage box 2. It is mounted on the main body 1 so as to be freely openable and closable, and at the front end thereof is provided an original mount section 16 for setting a transmission original to be fed into a later-described transmission section, and on the inner surface of the original mount section 16. A recording paper retainer 17 for pressing the recording paper P ejected from the recording paper ejection port 8 to the recording paper ejection portion 10 on the cover from above is swingably attached.

The platen roller 3 and the paper discharge roller 6 attached to the side of the recording paper cover 9 are installed in the main body 1 of the apparatus with the recording paper cover 9 mounted on the main body 1 of the apparatus. The receiving motor capable of rotating in the normal and reverse directions is rotatably driven via a transmission mechanism (both not shown), and the platen roller 3 can be switched between the forward and reverse directions when the recording paper P is fed and pulled back. While the rotation direction is controlled to be switched in conjunction with, the paper discharge roller 6 is rotated only in one direction corresponding to the recording paper discharge direction when the reception motor is driven and rotated, regardless of whether the reception motor is switched between forward and reverse rotation. Is installed in.

In addition, in FIGS. 1 and 2, reference numerals 20 and 21 denote paper sensors provided in the feeding and discharging paths of the recording paper P, and 22 denotes the feeding original set in the original mount section 16. The reference numeral 23 denotes an optical reading system provided in the main body 1 facing the reading section of the transmitting section 22, and the transmitting section at the front end of the apparatus conveyed to the reading section. Reference numeral 24 denotes a power supply unit mounted on the rear end of the apparatus body 1.

FIG. 3 shows an operation of ejecting the recording paper P in the main body 1 of the facsimile machine, and FIG. 4 shows an operation of pulling back the recording paper P. If the cutter unit 5 is provided in front of the U-turn discharge path 15, as shown in FIGS. 3 and 4, after the recording paper P printed by the thermal head 4 of the recording unit is cut by the cutter unit 5, It will be turned and discharged. If the cutter unit 5 is provided in front of the U-turn discharge path 15 together with the recording unit, the recording paper can be set without passing through the U-turn discharge path 15, and the recording paper P printed by the cutter unit 5 can be set. After cutting, the pullback length when pulling back the unprinted recording paper tip to the print start position near the thermal head is short.

However, in the case of the embodiment, in the final page at the time of initial setting and continuous recording, the discharge recording which has been cut by the discharge roller 6 operated by the drive source common to the platen roller 3 is performed. Since the paper Pout is completely ejected from the recording paper discharge port 8, as shown in FIG. 4, even after the print recording paper P is cut by the cutter unit 5, the recording paper feed by the platen roller 3 is continued, and the trailing edge of the discharged recording paper Pout is reached. The pullback operation of the unprinted recording paper P by the platen roller 3 is performed at a predetermined timing when the front end of the unprinted recording paper P reaches the intermediate portion of the U-turn discharge path 15.

Therefore, if the above-mentioned cutter arrangement structure is adopted, when the recording paper P is initially set, the recording paper cover 9 shown in FIG. 4 need only be conducted to the cutter unit 5 placed immediately after the recording section from above 4, and it is not necessary to conduct electricity to the U-turn discharge path 15, so recording paper can be set easily and recording paper jams can occur. Even if you do, you can easily clear the jam. Then, as in the embodiment, when the recording paper cover 9 is opened, the recording paper discharge path in the apparatus main body 1 is fully opened except for the cutter unit 5, and a cover mounting structure is adopted. In some cases, the convenience of recording paper setting and clearing jams will be further improved.

Further, since the pullback length of the unprinted recording paper P after cutting the printed recording paper Pout by the cutter unit 5 becomes short, even when continuously printing the received document, the printing for pullback is performed. The loss time is less.

Further, as the pullback length of the recording paper P is shortened, when the unprinted recording paper P is pulled back to the print start position near the thermal head 4 after being cut by the cutter unit 5, as shown in FIG. As shown by the chain double-dashed line, the slack Pw of the recording paper P that is pulled back to the roll paper R side may be small, and the recording paper P is likely to have a waiting habit during reception waiting, or excessive slack Pw causes recording during feeding. Problems that cause paper jams are also eliminated.

Although the above embodiment has exemplified the case of the facsimile apparatus, the present invention is generally applied to an image recording apparatus of a type in which the recording paper fed from the built-in roll paper is U-turned and ejected. it can. Further, the recording method is not limited to the thermal recording method using a thermal head.

[0023]

[Effect of device]

 With the cutter arrangement structure according to the present invention, the printed recording paper is cut in the image recording apparatus in which the recording paper fed out from the built-in roll paper and printed in the recording unit is made to make a U-turn in the main body of the apparatus and is discharged. By installing the cutter unit in front of the U-turn discharge path instead of in the vicinity of the recording-paper discharge port on the exit side of the U-turn discharge path for U-turning the recording paper, It will have an improving effect. At the time of initial setting of the recording paper, it is not necessary to insert the leading end of the recording paper into the curved U-turn discharge path, so that the recording paper can be set easily and the jam can be easily released when the recording paper is jammed. After cutting the printed recording paper with the cutter unit, the pullback length when pulling back the unprinted recording paper leading edge to the print start position of the recording section is shortened, and the loss time of printing for pullback is shortened. . Since the pullback length of the unprinted recording paper is short, the slack of the recording paper pulled back to the roll paper R side is small, eliminating the risk of recording paper jam caused by the waiting habit of the recording paper or excessive slack when waiting for reception. To be done.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing the outline of a facsimile apparatus according to an embodiment.

FIG. 2 is a diagram showing a state in which a recording paper cover of FIG. 1 is opened.

FIG. 3 is an explanatory diagram showing a recording paper discharge operation of the embodiment.

FIG. 4 is an explanatory diagram showing a recording paper pullback operation of the embodiment.

FIG. 5 is an explanatory diagram showing a recording paper discharge operation of a comparative example.

FIG. 6 is an explanatory diagram showing a recording paper pullback operation of a comparative example.

[Explanation of Codes] 1 main body 2 recording paper storage box 3 platen roller 4 thermal head 5 cutter unit 6 paper ejection roller 7 pinch roller 8 recording paper ejection port 9 recording paper cover 10 recording paper ejection section 11 hinge section 12a, 12b paper Guide 13 Paper path passage 14 Paper path passage 15 Paper path passage (U-turn discharge path) R Roll paper P Recording paper Pout Printed and cut discharge recording paper Pw Slack of recording paper pulled back to the roll paper side

Claims (1)

[Scope of utility model registration request] 1. An image recording apparatus, wherein a recording paper fed from a built-in roll paper and printed by a recording unit is made to make a U-turn in the main body of the apparatus to be discharged, and a cutter unit for cutting the printed recording paper is provided. A cutter arrangement structure of an image recording apparatus, which is provided in front of a U-turn discharge path for making a U-turn of recording paper.