JPS6325074A - Feed mechanism of roll-shaped recording medium having photosensitivity - Google Patents

Abstract

PURPOSE:To judge whether a roll-shaped recording medium is cut well according to the detection signal of a medium pass sensor during the feed of the recording medium, by a method wherein the roll-shaped recording medium is cut by a cutter and the cut roll-shaped recording medium is fed for a time sufficient to allow the cut end part of the cut roll-shaped medium to pass the medium pass sensor. CONSTITUTION:After a recording medium 17 is cut by a cutter 26, the cut recording medium 17 is fed for a time sufficient to allow the cut end part thereof to pass over the distance A up to a medium pass sensor 29. In this case, when the recording medium 17 is cut accurately, the medium pass sensor 29 detects the cut end part of the recording medium 17 and the detection signal changes but when the recording medium 17 is not perfectly cut and continues at a part, the detection signal does not change. A control part 37 judges whether the recording medium 17 is cut well from the presence of the change of the detection signal of the medium pass sensor 29 within the above-mentioned time to inform the same to an operator by a proper means such as a display.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a transport mechanism for a photosensitive roll-shaped recording medium in a laser printer.

(Background of the Invention) One type of laser printer is one that is configured to perform photosensitive recording by irradiating a scanning light beam modulated with a print signal onto a roll-shaped photosensitive recording medium.

FIG. 3 is a block diagram of the main parts of such a laser printer. In FIG. 3, 1 is, for example, a He-N, e laser light source. The output beam of the light source 1 is passed through a neutral density filter 2 → an acousto-optic modulator.
du-1atOr: Hereinafter abbreviated as AOM) Lens 3→A
OM4 → Mirror 5 → Beam expander (beam e
xpand-er: hereinafter abbreviated as BE) 6 → pinhole 7
→Cylindrical lens (cyl 1ndrical
1ens; hereinafter abbreviated as CL) 8 → Mirror 10 → BE1
1 → passes through an optical system consisting of a mirror 12, enters a rotating polygon mirror 13, and is reflected as a scanning beam. The scanning light beam reflected by the rotating polygon mirror 13 enters the photosensitive roll-shaped recording medium 17 through a condenser lens 14.0L15 consisting of a θ lens and a shutter 16. On the other hand,
A mirror 18 is disposed near the scanning end between Cu2S and the shutter 16, and the scanning light beam reflected by the mirror 18 is reflected by a mirror 19 and enters the light receiving element 20. . The light receiving element 2o outputs a horizontal synchronization signal.

By the way, in such a laser printer, a cutter is installed on the conveyance path to cut the recording medium 17 according to a command signal, and after photosensitive recording, the recording medium 17 is cut to a required length and wound up. It will be stored in the magazine. The cutter cuts, for example, from the left end to the right end in the width direction of the recording medium 17, and is configured to return to its initial state when the take-up magazine is removed from a predetermined mounting position.

(Problems to be Solved by the Invention) However, according to such a conventional configuration, the recording medium 17
Since the recording medium 17 is photosensitive, it is not possible to visually confirm whether or not the recording medium 17 has been properly cut by the cutter. For this reason, if you remove the take-up magazine with the recording medium 17 still uncut, thinking that the recording medium 17 has been cut normally, a portion of the photosensitive-recorded recording medium 17 already stored in the take-up magazine will be removed. There is a possibility that it will be pulled out and the entire surface will be exposed.

The present invention has been made in view of the above problems, and its purpose is to realize a conveyance mechanism that can determine whether the cutting operation of the recording medium 17 is good or bad before removing the take-up magazine.

(Means for Solving the Problems) The present invention, which solves the above-mentioned problems, includes a loading roller that pulls out a photosensitive, unexposed roll-shaped recording medium stored in a supply magazine and sends it to the photosensitive recording section. , a main roller disposed near the photosensitive recording section and feeding the roll-shaped recording medium to the take-up magazine side; a cutter disposed on the conveyance path of the roll-shaped recording medium and cutting the roll-shaped recording medium according to a command signal; A media bus sensor is provided downstream of the cutter and detects the presence or absence of a roll-shaped recording medium, and after the cutter cuts the roll-shaped recording medium, the cut end of the cut roll-shaped recording medium is The present invention is characterized in that the roll-shaped recording medium is conveyed for a sufficient time to pass the media bus sensor, and the quality of the cutting operation of the roll-shaped recording medium is determined according to the detection signal of the media bus sensor during this period.

(Function) According to the present invention, it is possible to judge whether the recording medium cutting operation is successful or not based on the presence or absence of a change in the detection signal of the media bus sensor.

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

FIG. 1 is a configuration diagram showing the mechanical configuration of an embodiment of the present invention, and the same parts as in FIG. 3 are given the same reference numerals, and their re-explanation will be omitted. In FIG. 1, 21 is a supply magazine in which an unexposed recording medium 17 is stored. A vapor end sensor 22 detects the end of the recording medium 17, and is disposed near the outlet of the supply magazine 21. 23
．． A loading roller 24 pulls out the unexposed recording medium 17 stored in the supply magazine 21 and sends it to the photosensitive recording section. The loading roller 23.24
is connected to the loading motor 25 via a one-sided clutch (not shown). 26 is an auto cutter that automatically cuts the recording medium 17 according to a command signal, and is disposed on the downstream side of the loading roller 23. still,
Cutter sensors for controlling the reciprocating movement of the blade of the autocutter 26 are disposed at both ends of the autocutter 26, but are not shown. 27 is a loading roller 24
This is a turnrow that bends the conveyance direction of the recording medium 17 sent out through the turnrow approximately at right angles. A jam sensor 28 is arranged near the turn roller 27. Two media path sensors are arranged on the upper WL side of the photosensitive recording section and detect the presence or absence of the recording medium 17. 3o is a winding magazine 31 which is disposed near the photosensitive section and takes up the recording medium 17 on which photosensitive recording has been performed.
This is the main roller that feeds the material to the side. The main roller 30
is rotationally driven by a main motor 36.

32 is arranged on the downstream side of the main roller 30 and the recording medium 1
This is a loading sensor that detects the presence or absence of 7. A manual cutter 33 that cuts the recording medium 17 by manual operation is disposed between the loading sensor 32 and the take-up magazine 31.

As described above, the recording medium 17 that has undergone photosensitive recording is wound and stored in the winding magazine 31 . A take-up sensor 34 is disposed near the take-up shaft of the take-up magazine 31. Further, the winding magazine 31 is removably disposed at a predetermined position, and its attachment/detachment state is detected by a magazine sensor 35.

FIG. 2 is a diagram showing only the main parts of the electrical configuration of the embodiment shown in FIG. 1, and parts corresponding to those in FIG. 1 are given the same reference numerals. In the figure, numeral 37 is a control unit that performs various controls, and is composed of a microcomputer or the like. The control unit 37 receives signals from the media bus sensor 29 and other sensors, and controls the loading motor 25 . Main motor 3
6. Drive control of the shutter 16 and the like is performed. Further, 38 is a nonvolatile memory (RAM) in which data indicating whether or not the recording medium is cut by the cutter 26 is stored, and the control unit 37 receives the detection signal of the media bus sense 29 and the data stored in the nonvolatile memory 36 when the power is turned on. Recording medium 17 according to the data
It is also determined whether or not there is a disconnection.

In such a configuration, the O-ding roller 23.2
4, when video data is sent from an external device such as a host computer while in online mode, the control unit 37 activates the shutter 16.
is opened and the main motor 36 is driven intermittently to perform recording on the recording medium 17 with a scanning light beam.

After cutting the recording medium 17 by the cutter 26, the recording medium 17 is held for a sufficient time for the cut end of the recording medium 17 to pass through the distance A from the cutter 26 to the two media bus senses. If the recording medium 17 is correctly cut when conveyed, the media bus sense 2
9 detects the cut end of the recording medium 17 and the detection signal changes; however, if the recording medium 17 is not completely cut but is continuous in some parts, the detection signal does not change. Therefore, the control unit 37 controls the media bus sense 2 within the above-mentioned time.
Based on the presence or absence of a change in the two detection signals, it is determined whether the cutting operation of the recording medium 17 is successful or not, and the operator is notified by appropriate means such as a display. If the display indicates that there is no abnormality in the cutting, the cut recording medium 17 is wound on the take-up magazine 31, so even if the take-up magazine 31 is removed, photosensitive recording is still possible. The recording medium 17 is never pulled out from the take-up magazine 31. Note that if the recording medium 17 is not cut, the winding magazine 31 may be removed after performing the cutting operation again or cutting the recording medium 17 with the manual cutter 33.

Also, regarding the determination of whether or not the recording medium 17 is disconnected when the power is turned on, if disconnected data is stored in the nonvolatile memory 38 and a signal that does not detect the recording medium 17 is output from the two media bus senses. , the control unit 37 determines that the cut recording medium 17 is wound and stored in the winding magazine 31, and conversely, the cut data is stored and a signal for detecting the recording medium 17 is output. If so, it is determined that the cutting operation was not performed correctly. On the other hand, if cut data is not stored, it is determined that the recording medium 17 has not been cut. and,
These judgment results are notified to the operator by appropriate means such as display. Therefore, necessary measures can be taken after the power is turned on, and the operability of the device can be improved.

In the above explanation, only a rotating polygon mirror was shown as a pan deflector, but the optical deflector of the deflector is as shown in FIG.
Drive coil 311, reflection mirror 312, ligament 31
3 and the frame 314 are integrally molded, and a galvanometer mirror using crystal or the like may be used as the material of the optical inner core. From now on - Uchiko, for example,
052 Publication, Special Publication No. 60-57053, or Proceedings of the 20th 5rCE Academic Lecture July 1983 "
It can be manufactured by the method described in Crystal Light Deflector J (pages 657-658). Using this has excellent effects such as improved durability and accuracy.

(Effects of the Invention) As described above, according to the present invention, it is possible to realize a transport mechanism that can determine whether the cutting operation of the recording medium is good or bad before removing the take-up magazine.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing the mechanical configuration of an embodiment of the present invention;
FIG. 2 is a block diagram showing the main part of the electrical configuration of the embodiment shown in FIG. 1, FIG. 3 is a configuration diagram of a laser printer suitable for using the present invention, and FIG. 4 is an explanation of another deflector. It is a diagram. 17... Recording medium 21... Supply magazine 23.24... Loading roller 26... Two cutters... Media path sensor 31... Winding magazine 36... Main motor 37...- Control unit 38...Non-volatile memory (RAM) Patent applicant Roku Konishi Photo Industry Co., Ltd. Agent Patent attorney Fuji Ijima Jigai (1 person)

Claims (1)

[Claims] A loading roller that pulls out an unexposed photosensitive roll-shaped recording medium stored in a supply magazine and sends it to the photosensitive recording section, and a loading roller that is disposed near the photosensitive recording section and feeds the rolled recording medium to the take-up magazine side. a main roller, a cutter disposed on the conveyance path of the rolled recording medium to cut the rolled recording medium according to a command signal, and a media path sensor disposed downstream of the cutter to detect the presence or absence of the rolled recording medium. After cutting the rolled recording medium by the cutter, the rolled recording medium is conveyed for a time sufficient for the cut end of the cut rolled recording medium to pass through the media path sensor, and during this time, A transport mechanism for a roll-shaped recording medium, characterized in that it determines whether or not a cutting operation of the roll-shaped recording medium is successful according to a detection signal of a media path sensor.