JP2001330907A - Transportation fault predicting device for image recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make executable temporary preventive processing which is capable of beforehand averting a fault and obviates the occurrence of a jam by controlling the speeds of respective transporting rollers. SOLUTION: This transportation fault predicting device for image recorder comprises a paper feed section 40 which consists of a paper feed magazine 1, a paper feed motor 2, a paper presence/absence sensor 4 and a cutter 5, a pre-exposure transporting section 41 which consists of a pre-exposure transporting motor 6 and an exposure section reference position sensor 8 and a exposure section reference position sensor 8, an exposure section 42 which consists of a pre-exposure transporting motor 9, an exposure head 10 and a pre-exposure sensor 12, a post-exposure transporting motor 43 which consists of a pre-exposure transporting motor 13, a back print head 14 and a pre- exposure discharge sensor 16, a development transporting section 44 which consists of a developing section 17 and a developed part discharge sensor 19, a transportation control section 22 which controls these mechanism sections, an image processing section 21 which controls an exposure head 10 and a control section 20 which controls the entire part of the system.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for predicting a conveyance failure of an image recording apparatus.

[0002]

2. Description of the Related Art Conventionally, a transport failure predicting apparatus of this type of image recording apparatus has a paper sensor disposed in a transport unit, monitors the actual transport speed of the paper, and determines the transport speed of the paper notified from a control unit. If it deviates by more than the specified value, the user is notified.

For example, Japanese Patent Application Laid-Open No. 63-060840 discloses sheet conveying speed data transmitted from a recording section,
The data is compared with the actually measured sheet conveyance speed data, and if the data is shifted by a predetermined amount or more, the fact is notified.

[0004]

The first problem with the conventional apparatus for predicting a conveyance failure of an image recording apparatus is that if the control side determines that the conveyance speed data has shifted beyond a specified amount, it is complicated. This means that it is difficult to make predictions under optimal conditions when transporting various types of papers of various sizes, materials, and the like.

[0005] A second problem is that if the transport speed data deviates beyond a prescribed amount, only that fact is notified, and no active remedy is implemented.

An object of the present invention is to prevent obstacles in advance,
It is still another object of the present invention to provide a transport failure predicting device for an image recording apparatus capable of controlling the speed of each transport motor to execute a temporary prevention process for preventing a jam from occurring.

[0007]

According to the present invention, there is provided an apparatus for predicting a conveyance failure of an image recording apparatus, comprising a paper supply unit for supplying a sheet, a pre-exposure conveyance motor (Mb), and an exposure unit reference position sensor (S2). An exposure unit including a pre-exposure transport unit, an exposure unit transport motor (Mc), an exposure head (Ha), and a post-exposure sensor (S3), a post-exposure transport motor (Md), a back print head (Hb), and an exposure unit. It controls the post-exposure transport section including the discharge sensor (S4), the developing transport section including the developing section and the developing section discharge sensor (S5), the transport control section that controls these mechanical sections, and controls the exposure head. An image processing unit and an operation unit that controls the entire system are provided.

Further, in the apparatus for predicting a conveyance failure of an image recording apparatus according to the present invention, the paper supply section comprising a paper supply magazine, a paper supply motor (Ma), a paper presence / absence sensor (S1), and a cutter, Roll-type exposure paper is set in the paper supply magazine of the paper supply unit, and the paper presence / absence sensor (S1)
After confirming that the paper is set in step (1), the required amount of paper is drawn out by the paper feed motor (Ma), and then cut by a cutter.

Furthermore, in the apparatus for predicting a conveyance failure of an image recording apparatus according to the present invention, the paper feeding section is a stacker for stacking cut sheets.

Further, in the apparatus for predicting a conveyance failure of an image recording apparatus according to the present invention, the pre-exposure conveyance section controls the cut sheet by the pre-exposure conveyance motor (Mb) by the exposure section reference position sensor (S2). The sheet is conveyed until it is detected, and when an image is prepared by the image processing unit, the sheet is sent to the exposure unit by the pre-exposure conveyance motor (Mb).

Further, in the transport failure predicting apparatus for an image recording apparatus according to the present invention, the exposure section always starts driving the exposure section transport motor (Mc) until a continuous printing operation is completed after entering the printing state. Exposure processing is performed on the fed sheet by the exposure head (Ha), and the sheet passes through the post-exposure sensor (S3) without being stopped and is fed into the post-exposure transport section.

Further, in the apparatus for predicting a conveyance failure of an image recording apparatus according to the present invention, the post-exposure conveyance section is always in the printing state, similarly to the exposure section conveyance motor (Mc), until a continuous printing operation is completed. The post-exposure transport motor (M
d) is started, printing is performed by the back print head (Hb) when date and order information are needed on the back of the exposed paper sent from the exposure unit, and the paper is stopped without stopping. The sheet is fed into the developing / transporting section through an exposure section discharge sensor (S4).

Further, in the transport failure predicting apparatus for an image recording apparatus according to the present invention, the developing transport unit performs a developing process on the sheet sent by the developing unit and passes through the developing unit discharge sensor (S5). And discharging the developed paper.

Further, in the transport failure predicting apparatus for an image recording apparatus according to the present invention, when the operator instructs printing, the operation unit sends image data to be printed to the image processing unit and the transport control. And transmitting the drive information of each motor and paper information such as the paper size to the developing unit, and transmitting the development control parameter to the developing unit.

Further, in the transport failure prediction apparatus for an image recording apparatus according to the present invention, the image processing section performs image processing for exposing the image data sent from the operation section so that the exposure can be started. When ready, a Ready signal is sent to the transport control unit, and when the sheet reaches the exposure position from the transport control unit, exposure is performed by the exposure head (Ha) according to a head control signal according to a line synchronization signal sent from the transport control unit. Features.

Further, in the apparatus for predicting a conveyance failure of an image recording apparatus according to the present invention, the conveyance control unit may control the paper presence / absence sensor (S) according to paper information sent from the operation unit.
After confirming that there is paper in 1), if the paper is roll paper, drive the paper feed motor (Ma) by the length of the paper, cut the paper with the cutter, and if it is cut paper, stack it on the stacker. Then, the drive of the exposure section transport motor (Mc) and the post-exposure transport motor (Md) is started, and then the pre-exposure transport motor (Mb) is driven and detected by the exposure section reference position sensor (S2). After the sheet is conveyed and stopped once, and it is confirmed by the Ready signal from the image processing section that the preparation of the image is completed, the pre-exposure conveyance motor (Mb) is driven to feed the sheet to the exposure section, According to the print information sent from the operation unit, at the timing when it is assumed that the sheet is sent to the post-exposure conveyance unit by the post-exposure sensor (S3) and reaches the back print position, the back-up is performed. Printing is performed by the lint head (Hb), and the discharge of the sheet to the developing unit is monitored by the exposure unit discharge sensor (S4). When all the sheets are discharged, the exposure unit transport motor (Mc) and the exposure unit The rear conveyance motor (Md) is stopped, and the developing unit discharge sensor (S
In 5), the discharge of the sheet from the developing unit is monitored and notified to the operation unit.

[0017]

Next, embodiments of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1 showing the configuration of the mechanism section of the first embodiment of the present invention and FIG. 2 showing the functional configuration of this embodiment in a block diagram, the conveyance of the image recording apparatus of this embodiment will be described. In the failure prediction device, a paper feed unit 40 including a paper feed magazine 1, a paper feed motor (Ma) 2, a paper presence / absence sensor (S1) 4, and a cutter 5, and a pre-exposure transport motor (Mb)
6 and an exposure unit reference position sensor (S2) 8, a pre-exposure conveyance unit 41, an exposure unit conveyance motor (Mc) 9, an exposure head (Ha) 10, and an exposure unit 42 including a post-exposure sensor (S3) 12. , A post-exposure transport motor (Md) 13, a back print head (Hb) 14, and an exposure unit discharge sensor (S
4) a post-exposure transport section 43 comprising 16; a developing transport section 4 comprising a developing section 17 and a developing section discharge sensor (S5) 19;
4, a transport control unit 22 for controlling these mechanical units, an image processing unit 21 for controlling the exposure head 10, and an operation unit 20 for controlling the entire system.

Next, the operation of this embodiment will be described with reference to FIGS.

A roll type exposure paper 45 is set in the paper supply magazine 1 of the paper supply unit 40, and a paper presence / absence sensor (S
1) After confirming that the paper is set in 4, the required amount is drawn out by the paper feed motor (Ma) 2, and then cut by the cutter 5.

The pre-exposure transport section 41 is provided with a cut sheet 45
Is transported by the pre-exposure transport motor (Mb) 6 until the exposure unit reference position sensor (S2) 8 detects it.
When the image processing section 21 prepares an image, the paper 45 is sent to the exposure section 42 by the pre-exposure transport motor (Mb) 6.

The exposure unit 42 always drives the exposure unit transport motor (M) until a continuous printing operation is completed after entering the printing state.
c) The driving of 9 is started, the exposed paper 45 is subjected to exposure processing by the exposure head (Ha) 10, and the paper 45 passes through the post-exposure sensor (S3) 12 without stopping and is conveyed after exposure. To the unit 41.

The post-exposure transport section 43 always starts driving the post-exposure transport motor (Md) 13 when the printing state is entered, until the continuous printing operation is completed, similarly to the exposure section transport motor (Mc) 9. When date and order information are required on the back of the exposed paper 45 sent from the unit 42, printing is performed by the back print head (Hb) 14 and the paper 4
5 is sent to the developing unit 17 through the exposure unit discharge sensor (S4) 16 without stopping.

The developing unit 17 performs a developing process on the fed sheet 45, and passes the developing unit discharge sensor (S5) 19 to discharge the developed sheet 45.

Next, the operation of the functional configuration of this embodiment will be described with reference to FIG.

When printing is instructed by the operator, the operation unit 20 sends image data to be printed to the image processing unit 21 by the image signal 23, and sends the driving parameters of each motor to the transport control unit 22 by the control signal 24. In addition, transmission of paper information such as paper size and paper size, and transmission of development control parameters to the developing unit 17 by the control signal 25 are performed.

The image processing section 21 performs image processing for exposing the image data sent from the operation section 20, and when ready to start the exposure, the Ready signal 31
Is sent to the transport control unit 22, and the paper 45 is
When the head reaches the exposure position, the head control signal 33 controls the exposure head (H
a) Exposure is performed at 10.

After confirming that the paper is present by the paper presence / absence sensor (S 1) 4 according to the paper information sent from the operation unit 20, the transport control unit 22 uses the motor drive signal 34 to feed the paper feed motor (Ma). 2) is driven by the length of the paper, and the cutter control signal 3
At 8, the paper 45 is cut by the cutter 5, and at the same time, the exposure unit transport motor (Mc) 9 by the motor drive signal 36 and the post-exposure transport motor (Md) 13 by the motor drive signal 37.
Starts driving.

Subsequently, the transport control unit 22 drives the pre-exposure transport motor (Mb) 6 with the motor drive signal 35 and outputs the paper 4 until the exposure unit reference position sensor (S 2) 8 detects it.
5 is conveyed and stopped once.
When the preparation of the image is confirmed by the dy signal 31, the pre-exposure transport motor (Mb) is transmitted by the motor drive signal 35.
6 is driven to feed the paper 45 to the exposure unit 42.

Further, the transport control unit 22 is sent from the operation unit 20 at a timing at which it is assumed that the paper 45 is sent to the post-exposure transport unit 43 by the post-exposure sensor (S3) 12 and reaches the back print position. In accordance with the print information, printing is performed by the back print head (Hb) 14 by the control signal 39.

Thereafter, the transport control section 22 monitors the discharge of the paper 45 to the developing section 17 by the exposure section discharge sensor (S4) 16, and when all the sheets 45 are discharged, the motor drive signal 36 and the motor drive signal At 37, the exposure unit transport motor (Mc) 9 and the post-exposure transport motor (Md) 13 are stopped,
Further, the discharge of the paper 45 from the developing unit 17 is monitored by the developing unit discharge sensor (S5) 19, and the operation unit 20 is notified.

FIG. 3 is a diagram showing a format of status information returned from the transport control unit 22 to the operation unit 20 in the image recording apparatus of this embodiment.

The control signal 24 between the operation unit 20 including the status and the transport control unit 22 is composed of an arbitrary number of words in units of 16 bits as shown in the figure.

The "header" of the first word defines the data transmission direction.

The "data type" in the second word indicates the type of transmission / reception data for transmitting and receiving a similar format, and identifies other parameters and status.

The "number of data words" of the third word specifies the total number of words so that an arbitrary number of data words can be handled.

In the “sensor state 1”, the time from the start of driving of the sheet feeding motor to the turning on of the exposure unit reference position sensor (S2) 8 is registered as a numerical value as it is.

In the "sensor state 2", the time during which the exposure unit reference position sensor (S2) 8 is ON is registered as a numerical value as it is.

In the “sensor state 3”, the time from when the paper 45 is fed to the exposure section 42 until the post-exposure sensor (S3) 12 is turned on is registered as a numerical value.

In the "sensor state 4", the time during which the post-exposure sensor (S3) 12 is ON is registered as a numerical value as it is.

In the "sensor state 5", the time from when the leading edge of the sheet 45 passes through the post-exposure sensor (S3) 12 to when the exposure unit discharge sensor (S4) 16 is turned on is registered as a numerical value. .

In the "sensor state 6", the time during which the exposure section discharge sensor (S4) 16 is ON is registered as a numerical value as it is.

In the "sensor state 7", the time from when the head of the sheet passes through the exposure unit discharge sensor (S4) 16 to when the developing unit discharge sensor (S5) 19 is turned on is registered as a numerical value. .

In the "sensor state 8", the time during which the developing section discharge sensor (S5) 19 is ON is registered as a numerical value as it is.

As the status, the latest value after the paper 45 has passed is always registered, and the status is sent from the transport control unit 22 to the operation unit 20 at regular intervals.
Can grasp the transport status of the paper 45 from the sensor state.

FIG. 4 is a flowchart of the entire image recording apparatus according to this embodiment. 5 to 10 are more detailed flowcharts. The overall operation flow of the image recording apparatus according to the present embodiment will be described with reference to these drawings.

Referring to FIG. 4, the image recording apparatus of this embodiment first performs an initial setting process after power-on. Next, after setting the motor parameters, a transport test is performed. Then, after giving a print instruction, a conveyance state determination process is executed.

After the power is turned on, the apparatus first performs an initial setting process. FIG. 5 is a detailed flowchart of the initial setting process, which includes image processing settings, Ma motor parameter settings,
The Mb motor parameter setting, the Mc motor parameter setting, the Md motor parameter setting, and the developing section parameter setting are sequentially executed.

FIG. 6 is a detailed flowchart for setting the motor parameters. The starting frequency, slow-up time, maximum frequency, and slow-down time of the motor can be set individually for each motor. After executing the initial setting process, the apparatus executes a transport test in order to collect a reference value of the sensor state.

FIG. 7 is a detailed flowchart of the transport test, in which cutting and transport are started by designating the paper length.
The sensor statuses 1 to 8 are checked in the status, registered as a reference value, and the apparatus is set in a standby state.

FIG. 8 is a detailed flowchart of the print instruction, in which paper size setting during printing, paper parameters such as paper quality, and back print data transmission are sequentially executed.
Printing is started by a print start instruction. At this time, the image data is transmitted to the image processing unit in parallel. In the case of printing a plurality of sheets, this process is repeated until a full print instruction is received.

FIG. 9 is a detailed flowchart of the transport state determination process. After receiving the status, first, it is confirmed that an alarm such as a jam has occurred, and the transfer control unit 22 is checked.
After confirming that no jam has been detected, the sensor states 1 to 8 are confirmed and compared with the reference value obtained in the transport test. If it is determined in this comparison that the reference value and the sensor state are equal with a certain accuracy, the apparatus returns to the standby state. In this comparison determination, when it is determined that the reference value and the sensor state are abnormal even with a certain degree of accuracy, the jam itself is not detected, but it is determined that the state is close to the jam, and the process proceeds to the jam prediction process.

FIG. 10 is a detailed flowchart of the jam prediction process. When it is determined that the sensor states are abnormal from the sensor states 1 to 8, the respective confirmation notices are executed, and in order to prevent the occurrence of a jam, the motor parameters are simultaneously adjusted (decrease in drive frequency) at a fixed rate. Then, the reference value is reset according to the parameter change.

The confirmation notification when it is determined that the sensor state is abnormal in the sensor state 1 is an abnormality until the sensor reaches the exposure unit reference position sensor (S 2) 8. It is assumed that the operator is notified of the confirmation of the sheet feeding unit 40 and the pre-exposure transport unit 41.

The confirmation notification when it is determined that the sensor state is abnormal in the sensor state 2 is an abnormality when the sheet passes through the exposure unit reference position sensor (S 2) 8. Is assumed, and there is a problem in the pre-exposure transport unit 41. Therefore, the operator is notified of the confirmation of the sheet feeding unit 40 and the pre-exposure transport unit 41.

The confirmation notification when it is determined that the sensor state is abnormal in the sensor state 3 is an abnormality until the sensor reaches the post-exposure sensor (S3) 12. Therefore, it is assumed that there is a problem in the pre-exposure transport unit 41 and the exposure unit 42, and For the user, the pre-exposure transport section 41 and the exposure section 42
Notification of confirmation.

The confirmation notification when it is determined as abnormal in the sensor state 4 is an abnormality when passing through the post-exposure sensor (S3) 12, so it is assumed that there is a problem in the exposure unit 42 and the post-exposure transport unit 43, and The exposure unit 42 and the post-exposure transport unit 43
Notification of confirmation.

The confirmation notification when the sensor state 5 is determined to be abnormal is an abnormality until the sensor reaches the exposure unit discharge sensor (S4) 16, so that it is assumed that there is a problem in the exposure unit 42 and the post-exposure transport unit 43. The operator is notified of the confirmation of the exposure section 42 and the post-exposure transport section 43.

The confirmation notification when it is determined to be abnormal in the sensor state 6 is an abnormality when passing through the exposure unit discharge sensor (S4) 16, so it is assumed that there is a problem in the post-exposure transport unit 43, and the operator is informed. The confirmation of the post-exposure conveyance unit 43 is notified.

The confirmation notification when the sensor state is judged to be abnormal in the sensor state 7 is an abnormality until the sensor reaches the developing unit discharge sensor (S5) 19, and therefore it is assumed that there is a problem in the post-exposure conveying unit 43 and the developing conveying unit 44. Then, the operator is notified of the confirmation of the post-exposure conveyance section 43 and the development conveyance section 44.

The confirmation notification when it is determined as abnormal in the sensor state 8 is an abnormality when passing through the developing unit discharge sensor (S5) 19, so it is assumed that there is a problem only in the developing transport unit 44, and the operator is informed. The confirmation of the developing conveyance unit 44 is notified.

Referring to FIG. 11 showing the configuration of the mechanism section of the second embodiment of the present invention and FIG. 12 showing the functional configuration of this embodiment in a block diagram, the image recording of this second embodiment will be described. The apparatus uses the sheet feeding unit 4 for using the cut sheet 46.
Reference numeral 7 denotes only a sheet stacker, and sheet feeding is performed by a pre-exposure transport motor (Mb) 6. The pre-exposure conveyance unit 41 conveys the cut paper 46 by the pre-exposure conveyance motor (Mb) 6 until it is immediately detected by the exposure unit reference sensor (S3) 12, and the image processing unit 21 prepares an image. The paper 46 is sent to the exposure unit 42 by the pre-exposure transport motor (Mb) 6. Since the following operation is the same as the first embodiment,
The description is omitted.

FIG. 13 is a detailed flowchart of the initial setting according to the second embodiment.
Only the Mb motor parameter setting, the Mc motor parameter setting, and the Mc motor parameter setting are performed.

FIG. 14 is a detailed flowchart of the jam predicting process according to the second embodiment. When the sensor state 2 is determined to be abnormal, it is not determined that the sensor is abnormal due to the length of the sheet drawn out. Therefore, only the confirmation notification of the pre-exposure transport unit 41 is provided.

[0065]

As described above, the effect of the present invention is as follows.
The operation unit uses the sensor passage time information from the conveyance control unit when predicting that contamination of the rollers while transporting the paper, trouble of the mechanical unit, and the like will lead to an important obstacle such as paper jam. Failures can be avoided in advance by selecting any countermeasures for each device and notifying the operator based on conditions such as the size and material of the paper being transported and the degree of wear of the rollers. That is, it is possible to execute a temporary preventive process for preventing a jam from occurring by controlling the speed.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a mechanism section according to a first embodiment of the present invention.

FIG. 2 is a block diagram illustrating a functional configuration according to the first embodiment of this invention.

FIG. 3 is a diagram illustrating a format of status information returned by a transport control unit to an operation unit according to the first embodiment of the present invention.

FIG. 4 is a flowchart of the entire apparatus according to the first embodiment of the present invention.

FIG. 5 is a detailed flowchart of an initial setting process according to the first embodiment of this invention.

FIG. 6 is a detailed flowchart of motor parameter setting according to the first embodiment of the present invention.

FIG. 7 is a detailed flowchart of a transport test according to the first embodiment of the present invention.

FIG. 8 is a detailed flowchart of a print instruction according to the first embodiment of this invention.

FIG. 9 is a detailed flowchart of a transport state determination process according to the first embodiment of the present invention.

FIG. 10 is a detailed flowchart of a jam prediction process according to the first embodiment of this invention.

FIG. 11 is a diagram illustrating a configuration of a mechanism section according to a second embodiment of the present invention.

FIG. 12 is a block diagram illustrating a functional configuration according to a second embodiment of this invention.

FIG. 13 is a detailed flowchart of initial setting according to the second embodiment of this invention.

FIG. 14 is a detailed flowchart of a jam prediction process according to the second embodiment of this invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 paper feed magazine 2 paper feed motor (Ma) 4 paper presence / absence sensor (S1) 5 cutter 6 pre-exposure transport motor (Mb) 8 exposure unit reference position sensor (S2) 9 exposure unit transport motor (Mc) 10 exposure head (Ha) 12 Post-exposure sensor (S3) 13 Post-exposure transport motor (Md) 14 Back print head (Hb) 16 Exposure unit discharge sensor (S4) 17 Developing unit 19 Developing unit discharge sensor (S5) 20 Operation unit 21 Image processing Unit 22 transport control unit 23 image signal 24, 25, 39 control signal 31 Ready signal 32 line synchronization signal 33 head control signal 34, 35, 36, 37 motor drive signal 38 cutter control signal 40, 47 paper feed unit 41 transport before exposure Section 42 exposure section 43 post-exposure transport section 44 developing transport section 45 paper 46 cut paper

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) G03B 27/52 G03B 27/52 A 2H112 G03D 3/08 G03D 3/08 E 9A001 13/00 13/00 F G03G 21 / 00 500 G03G 21/00 500 510 510 F term (reference) 2C061 AQ06 AS06 HH01 HJ02 HK06 HK07 HL01 HV09 HV26 HV33 HV47 2H027 DA21 DA38 DC07 DC14 EC06 ED16 EE04 EE07 EF01 EK11 GB10 HA02 HA04 HA09 A03 DA03 DA26 EA10 EA13 EA15 EA17 2H106 AB04 AB20 AB45 AB46 AB53 AB64 AB99 BA11 BA55 BA58 BA75 BA91 2H109 AA13 BA02 BA03 BA11 2H112 AA11 AA14 AA15 BA01 BA15 BA17 BA26 BA29 BB08 BB09 BB10 BC26 BC48 EA02 9A001 JJ35

Claims (19)

[Claims] 1. A pre-exposure transport section comprising a paper feed section for supplying paper, a pre-exposure transport motor (Mb) and an exposure section reference position sensor (S2), an exposure section transport motor (Mc), and an exposure head ( Ha) and an exposure unit including a post-exposure sensor (S3); a post-exposure conveyance unit including a post-exposure conveyance motor (Md); a back print head (Hb); and an exposure unit discharge sensor (S4); A developing transport unit including a developing unit discharge sensor (S5), a transport control unit that controls these mechanical units, an image processing unit that controls the exposure head, and an operation unit that controls the entire system A transport failure predicting device for an image recording apparatus, comprising: 2. The paper supply unit comprising a paper supply magazine, a paper supply motor (Ma), a paper presence / absence sensor (S1), and a cutter, wherein the paper supply magazine of the paper supply unit is of a roll type. After confirming that the exposure paper is set and that the paper is set by the paper presence / absence sensor (S1), the required amount of the paper is pulled out by the paper feed motor (Ma), and then cut by the cutter. 2. The apparatus according to claim 1, wherein the transport failure is predicted by the image recording apparatus. 3. The apparatus according to claim 1, wherein the sheet feeding unit is a stacker for stacking cut sheets. 4. The pre-exposure conveyance unit conveys the cut sheet by the pre-exposure conveyance motor (Mb) until the exposure unit reference position sensor (S2) detects the cut sheet.
2. The apparatus according to claim 1, wherein a sheet is sent to the exposure unit by the pre-exposure conveyance motor (Mb) when an image is prepared by the image processing unit. 5. The exposure section starts driving the exposure section transport motor (Mc) at all times until a continuous printing operation is completed after entering a printing state, and the exposure head (Ha) is applied to the fed sheet. 2. A transport failure predicting apparatus for an image recording apparatus according to claim 1, wherein an exposure process is performed, and the paper is sent to the post-exposure transport section through the post-exposure sensor (S3) without stopping. 6. The post-exposure transport motor (Md), like the exposure unit transport motor (Mc), enters the printing state and continues until the continuous printing operation is completed.
Is started, printing is performed by the back print head (Hb) when date and order information are required on the back of the exposed paper sent from the exposure unit, and the exposure unit is stopped without stopping the paper. 2. A transport failure predicting apparatus for an image recording apparatus according to claim 1, wherein said transport means feeds said developing transport section through a discharge sensor (S4). 7. The developing and transporting section performs a developing process on the sheet sent by the developing section, and discharges the developed sheet through the developing section discharge sensor (S5). The apparatus for predicting a conveyance failure of an image recording apparatus according to claim 1. 8. An operation unit, when printing is instructed by an operator, sends image data to be printed to the image processing unit, and instructs the transport control unit to control a driving parameter of each motor and a sheet size such as a sheet size. 2. The apparatus according to claim 1, wherein information is transmitted and a development control parameter is transmitted to the developing unit. 9. The image processing unit performs image processing for exposing image data sent from the operation unit,
When ready to start exposure, a Ready signal is sent to the transport control unit, and when the sheet reaches the exposure position from the transport control unit, the exposure head (Ha) is sent to the exposure head (Ha) by a head control signal according to a line synchronization signal sent from the transport control unit. 2. The apparatus according to claim 1, wherein the exposure is performed by performing the exposure. 10. The transport control unit according to the paper information sent from the operation unit, the paper presence / absence sensor (S
After confirming that there is paper in 1), if the paper is roll paper, drive the paper feed motor (Ma) by the length of the paper, cut the paper with the cutter, and if it is cut paper, stack it on the stacker. Then, the drive of the exposure section transport motor (Mc) and the post-exposure transport motor (Md) is started, and then the pre-exposure transport motor (Mb) is driven and detected by the exposure section reference position sensor (S2). After the sheet is conveyed and stopped once, and it is confirmed by the Ready signal from the image processing section that the preparation of the image is completed, the pre-exposure conveyance motor (Mb) is driven to feed the sheet to the exposure section, According to the print information sent from the operation unit, at the timing when it is assumed that the sheet is sent to the post-exposure conveyance unit by the post-exposure sensor (S3) and reaches the back print position, the back-up is performed. Printing is performed by the lint head (Hb), and the discharge of the sheet to the developing unit is monitored by the exposure unit discharge sensor (S4). When all the sheets are discharged, the exposure unit transport motor (Mc) and the exposure unit The rear conveyance motor (Md) is stopped, and the developing unit discharge sensor (S
2. The apparatus according to claim 1, wherein the control unit monitors the discharge of the sheet from the developing unit and notifies the operating unit of the discharge. 11. The format of status information returned by the transport control unit to the operation unit is composed of an arbitrary number of words in units of 16 bits, and the first word “header”
Indicates the data transmission direction, and the “data type” in the second word indicates the type of transmission / reception data that transmits and receives the same format, identifies the other parameters and status, and determines the “data word number” in the third word. In "", the entire number of words is defined so that an arbitrary number of data words can be handled. In "sensor state 1", from the start of driving of the paper feed motor (Ma) to the turning on of the exposure unit reference position sensor (S2). The time during which the exposure unit reference position sensor (S2) is ON is directly registered as a numerical value in "sensor state 2", and the time is registered as the "sensor state 3" in "sensor state 3". The time from when the paper is fed into the exposure unit until the post-exposure sensor (S3) is turned on is registered as a numerical value as it is, and the “sensor state 4” is set as the post-exposure sensor (S3). The time during which is turned on is registered as a numerical value as it is, and in the “sensor state 5”, after the leading end of the sheet passes the post-exposure sensor (S3), the exposure unit discharge sensor (S4) is turned on. The time until the exposure unit discharge sensor (S4) is ON is registered as a numerical value in “sensor state 6”, and the time until the exposure unit discharge sensor (S4) is ON is registered in “sensor state 6”. The time from when the head of the sheet passes through the exposure unit discharge sensor (S4) to when the developing unit discharge sensor (S5) is turned on is registered as a numerical value as it is, and "sensor state 8"
The time during which the developing unit discharge sensor (S5) is ON is registered as a numerical value as it is, and the status information always registers the latest value after the sheet has passed. 2. The apparatus according to claim 1, wherein the operation unit is capable of grasping a sheet conveyance state based on the sensor state by transmitting the sheet from the conveyance control unit to the operation unit. 3. 12. After the power is turned on, an initial setting process is executed,
2. The apparatus according to claim 1, wherein a conveyance state determination process is performed after a motor parameter is set, a conveyance test is performed, and a print instruction is issued. 13. The image processing apparatus according to claim 1, wherein the initial setting processing includes:
13. The apparatus according to claim 12, wherein the setting of the Ma motor parameter, the setting of the Mb motor parameter, the setting of the Mc motor parameter, the setting of the Md motor parameter, and the setting of the developing unit parameter are sequentially performed. 14. The conveyance failure of the image recording apparatus according to claim 12, wherein the motor parameter setting can set a starting frequency of the motor, a slow-up time, a maximum frequency, and a slow-down time for each motor. Prediction device. 15. The transport test starts cutting and transporting by designating a paper length, confirms the sensor states 1 to 8 with status information, and registers as a reference value.
13. The apparatus according to claim 12, wherein the apparatus is in a standby state. 16. The printing instruction according to claim 12, wherein the paper size setting at the time of printing, paper parameters such as paper quality, and transmission of back print data are sequentially executed, and printing is started according to the printing start instruction. A transport failure predicting device for the image recording apparatus described in the above. 17. When the status information is received, first, it is confirmed that an alarm such as a jam has occurred, and if it is confirmed that the jam has not been detected by the transport control unit, the transport state determination process may be performed. Confirmation of states 1-8,
The device is compared with the reference value obtained in the transport test, and in this comparison determination, if it is determined that the reference value and the sensor state are equivalent with a certain accuracy, the apparatus returns to the standby state, and in this comparison determination, the reference value is compared with the reference value. 13. The method according to claim 12, wherein when the sensor state is determined to be abnormal even with a certain accuracy, the jam itself is not detected, but the state is determined to be close to the jam, and the process is shifted to the jam prediction process. Transport failure prediction device for image recording devices. 18. The jam predicting process executes a confirmation notification when it is determined that the sensor states 1 to 8 are abnormal in order, and at a fixed rate all at once to prevent the occurrence of a jam. 18. The apparatus according to claim 17, wherein each motor parameter is adjusted (driving frequency is reduced), and the reference value is reset when the parameter is changed. 19. When the sensor state 1 is determined to be abnormal, the confirmation notification is sent to the exposure unit reference position sensor (S
Since it is abnormal until reaching 2), it is assumed that there is a problem with the paper drawing length and the pre-exposure transport unit, and an operator is notified of the confirmation of the paper feed unit and the pre-exposure transport unit, Since the confirmation notification when it is determined that the state is abnormal in the state 2 is an abnormality when the sheet passes through the exposure unit reference position sensor (S2), it is assumed that the drawing time of the sheet is erroneously increased and the transit time is long. Since it is assumed that there is a problem in the pre-exposure transport section, the operator is notified of the confirmation of the sheet feeding section and the pre-exposure transport section, and the sensor state 3
Since the confirmation notification when it is determined that there is an abnormality is an abnormality until the post-exposure sensor (S3) is reached, it is assumed that there is a problem in the pre-exposure transport unit and the exposure unit, and the operator is notified of the exposure. Notify the confirmation of the front transport unit and the exposure unit, the confirmation notification when it is determined that the sensor state 4 is abnormal,
Since it is abnormal when passing through the post-exposure sensor (S3), it is assumed that there is a problem in the exposure section and the post-exposure transport section, and the operator is notified of the confirmation of the exposure section and the post-exposure transport section. However, since the confirmation notification when it is determined as abnormal in the sensor state 5 is abnormal until the sensor reaches the exposure unit discharge sensor (S4), it is assumed that there is a problem in the exposure unit and the post-exposure transport unit. The operator is notified of the confirmation of the exposure section and the post-exposure transport section, and the sensor state 6
Since the confirmation notification when it is determined that there is an abnormality in the post-exposure transport section is assumed to be a problem in the post-exposure transport section because it is an abnormality when passing through the exposure section discharge sensor (S4). When the sensor status 7 is determined to be abnormal, the confirmation notification is abnormal until the sensor reaches the developing unit discharge sensor (S5). Therefore, there is a problem in the post-exposure transport unit and the developing transport unit. The operator is notified of the confirmation of the post-exposure transport unit and the developing transport unit. When the sensor state 8 is determined to be abnormal, the confirmation notification is transmitted to the developing unit discharge sensor (S5). 19. The image recording apparatus according to claim 18, wherein the abnormality is detected when passing through the image forming apparatus, and it is assumed that there is a problem only in the developing and conveying unit, and the operator is notified of the confirmation of the developing and conveying unit. Transport failure prediction device.