JPH04322558A - Original reader - Google Patents

Abstract

PURPOSE:To realize a designation function of a read range of an original picture with a small size at a low cost by controlling a block in which an output of a picture data stored by read operation is inhibited through simple key operation to set a block of the read range. CONSTITUTION:When it is discriminated that an original picture resident in a read undesired block comes onto a read position line based on a mark provided to an original table 12, a PAUSE key 24 is depressed to stop the carrying of the original and reading. In this case, a STOP key 22 is operated, Then a picture data having been stored in a memory in a signal processing section 9 up to the operation stop is outputted to a recording section 10 and recorded on thermosenstive recording paper. Moreover, when the STOP key 22 is kept in operation, the original 15 is carried and discharged. The picture data for a block when the STOP key 22 is kept in operation is not stored.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an original reading apparatus, and more particularly to an original reading apparatus that specifies the reading range of an image of an original conveyed to a reading position by key operation.

0002

2. Description of the Related Art Generally, in a document reading device, a document set at a predetermined position on a document table is conveyed to a reading position, and an optical system emits reflected light projected from a light source onto images of the document sequentially conveyed to the reading position. CCD (Charge Coup)
It has a scanner that conducts photoelectric conversion and outputs image data by guiding the image to a photoelectric conversion element such as an LED device.The image data output from the scanner is once stored in a predetermined image memory and then output.

[0003] Some of these conventional document reading devices have a function of specifying a reading range of a document and reading the document. By setting the reading range on a special table or by marking the specified range on the original with a designated marker, you can separate the reading range from the non-reading range and specify the reading range of the original image. There is. Furthermore, there is also a method that sets the reading range by interrupting the reading of the original image and operating a step key to convey the unnecessary portion.

0004

[Problems to be Solved by the Invention] However, in such conventional document reading devices equipped with a reading range specification function, it is difficult to set the reading range numerically using a numeric keypad or the like provided on the operation panel, or use a dedicated If the reading range is set on a table, the device becomes large, and if the reading range is marked on the original with a marker or the like, there is a problem in that the original is stained. To avoid staining this original, you can make a copy of the original and then use a marker to indicate the reading range, but if the original image is fine, it is difficult to maintain the original image quality by copying the original. Therefore, when specifying the reading range of a high-definition original image, it is necessary to prepare a plurality of originals, which increases the operator's effort and reduces work efficiency. In addition, when reading is interrupted and the reading range is specified using the step keys, the operator must be near the facsimile machine that is transmitting and operate the step keys.
This method also reduces the work efficiency of the operator.

[0005] Furthermore, since both of these document reading devices have a sophisticated function of recognizing the reading range, this increases the cost of the document reading device and increases the size of copying machines and facsimile machines equipped with these document reading devices. It has been difficult to add the conventional reading range specification function to document reading devices installed in portable copying machines and facsimile machines, which are becoming popular as personal devices due to the increase in technology and cost.

Accordingly, the inventions of the present application control the operation of reading an image of a document being conveyed to a reading position and the operation of accumulating image data in an image memory by operating a predetermined key, and controlling the operation of reading an image of a document being conveyed to a reading position and the operation of accumulating image data in an image memory. It is an object of the present invention to provide a document reading device that is compact and low-cost and realizes a reading range designation function by making it possible to set reading range divisions by controlling a section in which the output of image data is prohibited.

[0007]

[Means for solving the problem] The invention according to claim 1 includes:
a document transport unit that transports the set document to a reading position;
A reading section that scans and reads a document image conveyed to the reading position at predetermined scanning intervals and outputs image data, and an image memory that stores the image data read by the reading section in a predetermined address area. In a document reading device that temporarily stores read image data in an image memory and outputs the read image data, a reading operation instruction means for instructing the reading section to stop and cancel the stop of the reading operation, and a reading operation instruction means for instructing each instruction from the reading operation instruction means. a reading operation control means for controlling the timing of stopping and canceling the stopping of the reading operation in accordance with the scanning timing of the reading section; and the storage operation of image data in the image memory in accordance with the timing of stopping and canceling the stopping of the reading operation. an accumulation operation control means for controlling, and prohibits the reading of the original image conveyed to the reading position and the accumulation of image data during each instruction period in response to an instruction to stop and cancel the stop of the reading operation from the reading operation instruction means. The invention according to claim 2 is characterized in that a deletion section is set for deleting the original image read by scanning the original. It is equipped with a reading unit that scans and reads an image at predetermined scanning intervals and outputs image data, and an image memory that stores the image data read by the reading unit in a predetermined address area. In a document reading device that stores and outputs images in an image memory, a reading operation instructing means instructs the reading section to stop and release the reading operation, and a scanning timing of the reading section in accordance with each instruction from the reading operation instructing means. a deletion interval setting means for setting a deletion interval in which reading of the original image conveyed to the reading position during each instruction period is prohibited and the read original image is deleted; storage means for storing address data of image data stored in the image memory; and an output for prohibiting the output of image data accumulated in a deletion section based on the address data stored in the storage means when outputting image data from the image memory. 4. A control means for inhibiting the output of the image data accumulated in the image memory during a deletion period set by a reading operation stop and stop release instruction from the reading operation instruction means. In the original reading device according to claim 1 or claim 2, the transporting operation of the original transporting section is stopped by an instruction to stop the reading operation from the reading operation instruction means, and after the stop, the transporting operation of the original transporting section is stopped. The invention according to claim 4 is characterized in that a conveyance speed instructing means for outputting an instruction to increase the conveyance speed is provided, and in the document reading device according to claim 1 or claim 2, The invention according to claim 5 is characterized in that the conveyance speed of the document conveyed to the reading position is increased during the deletion section of the read document image set by the stop and stop release instructions of the reading operation, 3. The document reading device according to claim 2, wherein the image data read in the read document image is deleted during output in a deletion section of the read document image set by the reading operation stop and stop release instruction from the reading operation instruction means. The invention according to claim 6 is characterized in that the message data is added to the image data other than the deletion section and output.
The document reading device according to claim 1 or claim 2, wherein identification means for identifying the reading position of the original image conveyed to the reading position is provided at a visible position on the conveyance path in front of the reading position, and the identification means The invention described in claim 7 is characterized in that, in the original reading device according to claim 1 or claim 2, the reading position of the document image being conveyed is identified and the deletion section is set. The invention according to claim 8 is characterized in that a display means is provided for displaying reading position information of the original image based on the transport speed of the original transported to the original. In a document reading device that includes a conveying section and a reading section that scans and reads a document image conveyed to the reading position at predetermined scanning intervals and outputs image data, and outputs the read document image as image data. , a start position instructing means for instructing a reading start position of the original image conveyed to the reading position, a reading length setting means for setting a reading length of the original image from the reading start position, a start position instructing means and a reading control means for controlling the document conveying section and the reading section based on the instructions and settings of the length setting means; the document image being conveyed to the reading position from the instructed reading start position and the set reading length; The invention set forth in claim 9 is characterized in that the invention includes a document transport section that transports a set document to a reading position, and a document transport section that scans the document image transported to the reading position at a predetermined scanning interval. a reading unit configured to read the original image and output the image data, the original reading device outputting the read original image as image data; and reverse instructing means for outputting an instruction to the document conveyance section to change the direction of document conveyance to the reading position into a forward rotation operation and to change the normal rotation operation to a reverse rotation operation, to the document conveyance section. The invention according to claim 10 is characterized in that the original can be pulled back by a reverse instruction, and the invention according to claim 10 is characterized in that the invention includes a document transport unit that transports the set original to a reading position, and a document transport unit that transports the original image transported to the reading position in a predetermined manner. a reading unit that scans and reads the image at a scanning interval of , and outputs image data, and outputs the read original image as image data, wherein the reading start position of the original image conveyed to the reading position is determined. a start position instructing means for instructing, and an end position instructing means for instructing a reading end position with respect to a reading start position of the document image indicated by the start position instructing means;
It is characterized by having the following.

[0008]

[Operation] In the invention as set forth in claim 1, the reading operation of the original image being conveyed to the reading position and the operation of accumulating the image data in the image memory are performed at the reading scanning timing according to the input stop instruction and stop release instruction of the reading operation. In the invention as claimed in claim 2, the deletion section of the read original image is set by prohibiting the output of the image data read and accumulated during each instruction period. The address data of the image data to be accumulated is stored, and when the image data is output, the output of the image data of the stored address data is prohibited and a deletion section of the read original image is set.

Therefore, the reading range of the document image being conveyed to the reading position can be arbitrarily designated and easily deleted, and the reading range designation function can be realized with a simple control configuration. By incorporating a document reading device into a personal device such as a portable copying machine or a facsimile machine, it is possible to improve the functionality of the device without increasing its size or cost.

[0010] In the invention described in claims 3 and 4, the reading operation of the original image being conveyed to the reading position and the operation of accumulating image data in the image memory are performed by inputting an instruction to stop the reading operation and canceling the stop. The reading scanning timing is controlled by the instruction, and the deletion section of the read original image is set by prohibiting the output of the image data read and accumulated during each instruction period, or
The address data of the image data read and accumulated during each instruction period is stored, and when outputting the image data, the output of the image data of the stored address data is prohibited and a deletion section of the read original image is set. Along with being
The conveyance speed of the document in each instruction period is increased.

Therefore, it is possible to arbitrarily designate the reading range of the original image being conveyed to the reading position and easily delete it, and it is also possible to shorten the time for conveying the original in the deletion section, and the reading can be performed with a simple control configuration. By realizing a range specification function and shortening the operation time when using the specification function, if a document reading device equipped with this specification function is installed in a personal device such as a copying machine or a facsimile machine, the size of the device can be reduced. It is possible to improve functionality without increasing the cost or increase the cost, and when installed in a portable personal device powered by a battery, the battery operating time can be extended.

In the invention as set forth in claim 5, the reading operation of the document image being conveyed to the reading position and the operation of accumulating the image data in the image memory are controlled by the reading scan timing according to the input stop instruction and stop release instruction of the read operation. The deletion section of the read original image is set by prohibiting the output of the image data that is read and accumulated during each instruction period, or the image data that is read and accumulated during each instruction period is controlled by address data is stored, and when outputting image data, the output of the image data of the stored address data is prohibited, a deletion section of the read original image is set, and the read image data is not stored in the deletion section. At the time of output, message data indicating deletion is added to image data other than the deleted section and output.

Therefore, the reading range of the original image being conveyed to the reading position can be arbitrarily specified and deleted easily, and the deletion section of the read original image can be clearly notified, so that the reading can be performed with a simple control configuration. By realizing a range specification function and installing a document reading device equipped with this specification function in a personal device such as a portable copying machine or facsimile machine, the function can be improved without increasing the size and cost of the device. can be done.

[0014] In the invention as set forth in claim 6, the reading operation of the original image being conveyed to the reading position and the operation of accumulating the image data in the image memory are controlled by the read scanning timing according to the input stop instruction and stop release instruction of the read operation. The deletion section of the read original image is set by prohibiting the output of the image data that is read and accumulated during each instruction period, or the image data that is read and accumulated during each instruction period is controlled by address data is stored, and when outputting image data, the output of the image data of the stored address data is prohibited, a deletion section of the read original image is set, and the visual confirmation on the conveyance path in front of the reading position is prohibited. The reading position of the document image being conveyed is identified by means for identifying the position of the document being conveyed, which is provided at a possible position, and the deletion section is set.

Therefore, it is possible to arbitrarily specify the reading range and easily delete the original image while checking the transport position of the original image being transported to the reading position, and the function of specifying the reading range can be realized with a simple control configuration. If a document reading device equipped with the designated function is installed in a personal device such as a portable copying device or a facsimile device, the function can be improved without increasing the size and cost of the device.

In the seventh aspect of the present invention, the reading operation of the original image being conveyed to the reading position and the operation of accumulating the image data in the image memory are controlled by the read scanning timing according to the input stop instruction and stop release instruction of the read operation. The deletion section of the read original image is set by prohibiting the output of the image data that is read and accumulated during each instruction period, or the image data that is read and accumulated during each instruction period is controlled by address data is stored, and when outputting image data, the output of the image data of the stored address data is prohibited, a deletion section of the read original image is set, and the reading position of the original image being transported is changed. is displayed and the deletion section is set.

Therefore, while checking the display of the conveyance position of the document image being conveyed to the reading position, it is possible to arbitrarily specify the reading range and easily delete it, and the function of specifying the reading range is realized with a simple control configuration. If a document reading device equipped with the designated function is installed in a personal device such as a portable copying device or a facsimile device, the function can be improved without increasing the size and cost of the device.

In the invention as set forth in claim 8, when the reading start position and the reading length from the reading start position of the document image being conveyed to the reading position are specified, the reading length from the specified reading start position is set. A document image in a length range is read, and image data in the read range is output. Therefore, the reading range can be easily set by arbitrarily instructing the reading start position of the document image being conveyed to the reading position, and the reading range specification function can be realized with a simple control configuration. If the document reading device provided with the document reading device is installed in a personal device such as a portable copying machine or a facsimile machine, the functions can be improved without increasing the size and cost of the device.

In the ninth aspect of the invention, when the reading start position of the document image being conveyed to the reading position is specified, the document image within a predetermined length range from the designated reading start position is read. , the image data of the reading range is output, and the document that has been conveyed to the reading start position is pulled back by inputting a reverse instruction to the document conveyance unit, and the reading start position is again instructed. The reading start position is changed.

Therefore, the reading range can be easily set by arbitrarily instructing the reading start position of the original image conveyed to the reading position, and the reading start position can be easily changed. By realizing a reading range specification function using the control configuration and installing a document reading device equipped with this specification function in a personal device such as a portable copying machine or facsimile machine, it is possible to avoid increasing the size and cost of the device. function can be improved.

In the tenth aspect of the invention, when the reading start position and the reading end position of the original image being conveyed to the reading position are specified, the reading end position is changed from the specified reading start position to the reading end position. The original image in the range up to is read, and the image data in the reading range is output. Therefore, the reading range can be easily set by arbitrarily specifying the reading start position and end position of the document image being conveyed to the reading position, and the reading range specification function can be realized with a simple control configuration. If a document reading device with specified functions is installed in a personal device such as a portable copying machine or a facsimile machine, the functions can be improved without increasing the size and cost of the device.

[0022]

[Examples] Next, each invention of the present application will be specifically explained based on examples. 1 to 10 are diagrams showing an embodiment of a portable facsimile device using a battery as a power source to which a document reading device of the invention according to claims 1 to 7 is applied. FIG. 1 is a block diagram of a facsimile device 1.
The facsimile device 1 includes a reading section 2, a timing generation circuit 3, an amplification waveform shaping section 4, an operation key section 5 for document conveyance, a main control section 6, a motor control circuit 7, a gate circuit 8, a signal processing section 9, and a recording section 10. , a transmitter 11, etc.,
A battery (not shown) is connected to the facsimile device 1 as a power source.

The reading section 2 includes, for example, a CCD (Charg
An image scanner using an e-CoupledDevice) is used, and the reading unit 2 scans a document conveyed to a reading position by a document conveyance mechanism, which will be described later, at scanning timing according to a timing signal input from a timing generation circuit 3. The document image is read and an image signal of a predetermined analog signal is output to the amplification waveform shaping section 4.

The timing generation circuit 3 generates a predetermined timing signal for controlling the scanning timing of the reading section 2 and the processing timing of the signal processing section 9 based on the clock signal inputted from the main control section 4. It is output to the signal processing section 9. The amplification waveform shaping section 4 shapes the waveform distortion of the image signal input from the reading section, amplifies it to a predetermined signal level, and outputs the amplified image signal to the document transport operation key section 5 and the gate circuit 8. .

As shown in FIG. 2, the original transport operation key section (reading operation instructing means, deletion section setting means) 5 has a START key for instructing the start of reading and feeding of the original.
key 20, a COPY key 21 for instructing switching between copying and facsimile transmission of an original, a STOP key 22 for instructing stop and forwarding of copying and facsimile transmission of an original;
A DETAIL key 23 for setting and canceling the resolution of the original image to be read, a PAUSE key 24 for instructing the reading unit 2 to temporarily pause during copy/facsimile transmission,
A document reading position display section (display means) 25 that displays the amount of feed relative to the document reading position in time and length, a POWER display section 26 that lights up when the power of the facsimile device 1 is turned on, and a warming-up period when the power of the facsimile device 1 is turned on. WAIT display section 27 that lights up, REPLACE PAPER display section 28 that displays out of recording paper, and DE
It consists of a DETAIL display section 29 that lights up in response to the TAIL key 23, and instruction signals generated by operating each of the keys 20 to 24 are output to the main control section 6. 20 keys each
A light emitting element such as an LED is built in 24, and emits light in response to each operation. Further, the document conveyance operation key section 5 transmits the amplified image signal inputted from the amplified waveform shaping section 4 to the main control section 6.

The main control unit (reading operation control means, accumulation operation control means) 6 is a CPU (Central P-roce
Ssing Unit), ROM (Read Only
Memory) and RAM (Random Acc
The basic program for the facsimile device 1 and the document image reading control program of the present invention are stored in the ROM. Further, the main control section 6 controls each section of the facsimile apparatus 1 according to a program in the ROM, executes a sequence as a facsimile apparatus, and executes the reading control process of the present invention.

Motor control circuit (conveying speed instruction means) 7
The document table 1 shown in FIG. 2 is controlled by the main controller 6.
Drive control of the motor that transports the original set in No. 2 to the reading position. The gate circuit (output control means) 8 is operated by a control signal inputted from the main control section 6, and is operated by a signal processing section 9 for the amplified image signal inputted from the amplified waveform shaping section 4.
Prohibits communication to.

The signal processing section (storage means) 9 converts the analog amplified image signal inputted from the amplified waveform shaping section 4 into predetermined digital data, temporarily stores it in a built-in memory as image data, and then stores it in the recording section. 10 or the transmitter 11. The recording unit 10 uses, for example, a thermal recording device using a thermal element, and the recording unit 10 prints an ink sheet directly on thermal recording paper or on regular recording paper according to the image data input from the gate circuit 8. Record images indirectly through

The transmitter 11 exchanges facsimile control signals with the other party's facsimile machine, executes facsimile communication procedures, and transmits the image data input from the gate circuit 8. Next, the effect will be explained. In this example,
The feature lies in that the reading range of the original image conveyed to the reading position is designated by key operations on the original transport operation key section 5. The reading range designation process will be described.

First, the operation of a document set in the facsimile machine 1 and conveyed will be explained with reference to FIG. FIG. 3 shows the main configuration of the document transport mechanism and the reading section 2 in the facsimile machine 1.
A conveyance roller 14 that is attached to and rotates by a motor that is driven and controlled by the reading section 2 and the motor control circuit 7 is housed within the covers 13a and 13b. The original 15 set on the original table 12 is transported by the transport roller 14
The image of the document 15 conveyed to the reading position is read by the reading section 2 at a predetermined scanning timing, and is ejected in the direction of the arrow in FIG. Note that the motor to which the conveyance roller 14 is attached is driven and controlled by the motor control circuit 7.

Further, in FIG. 3, by providing a mark or a step on the document table 12 at a position P line a distance L from the reading position S, it is possible to prevent the image of the document being conveyed from actually being read by the reading section 2. This allows the operator to know where you are. Therefore, as shown in FIG. 4, if only part A of the document 15 is set as the required reading range, if the operator remembers the position that is a distance L away from the rear edge of part A, it is possible to If the line E--E on the document, which is a distance L apart, comes to the position of the mark or step, it can be confirmed that the rear end of the necessary portion A has been read by the reading section 2.

Furthermore, by forming part or all of the cover 13a from a transparent material, it is possible to confirm the original image passing through the reading position S. The document table 12 and cover 13a constitute identification means. There are basically two patterns for distinguishing the required reading range of a document by the method of confirming the reading range of the document, and other documents can be considered to be a combination of these two patterns. For the first pattern, if only the image from the leading edge of the document to the middle of the document (section A in Figure 4) is required, the second pattern is for the image from the middle of the document (section A in Figure 4). This is a case where only part B) is required.

The reading range designation process for these two patterns will be explained according to the flowcharts shown in FIGS. 5 to 9. First, the processing for the first pattern will be explained with reference to FIG. First, the COPY key 21 of the original transport operation key unit 5 is operated to set the copy mode (step S1), and the original 15 is set on the original table 12 (step S2). Next, press the START key 20
(step S3), the conveyance of the document 15 is started, and the reading unit 2 starts reading from the image of the leading edge of the document 15 being conveyed to the reading position S, and the read image signal is sent to the signal processing unit. In step 9, the image data is converted into image data and stored in the memory within the signal processing section 9.

Next, when the PAUSE key 24 is operated when it is determined that the original image in the category that does not need to be read is on the S line based on the mark etc. provided on the original table 12 (step S4), the original conveying and reading operation starts. stop. Here, when the STOP key 22 is operated (step S5), the image data accumulated in the memory in the signal processing section 9 until the operation is stopped is output to the recording section 10 and recorded on thermal recording paper. Furthermore, by continuing to operate the STOP key 22, the original 15 is conveyed and ejected (steps S6, S7).

[0035] Here, it should be noted that if a skew or jam occurs in the original 15 and it is desired to terminate the copying operation, recording on the thermal recording paper is no longer necessary, so the PAU
If the STOP key 22 is operated without operating the SE key 24, image data will not be output to the recording section 10, thereby saving thermal recording paper. At this time, the conveyance of the original is in a paused state as described above, so if there is no damage to the original 15, continue to operate the STOP key 22 to eject it.
If the original 15 is damaged, the operator can open the cover 13a, operate the pressurizing lever or button, and take out the original 15.

Next, the processing for the second pattern will be explained with reference to FIG. First, the COPY key 21 of the original transport operation key section 5 is operated to set the copy mode (step T1), and the original 15 is set on the original table 12 (step T2). Next, the PAUSE key 24 is operated to pause the reading operation (step T3), and the STA
By continuing to operate the RT key 20, the original 15 is transported and advanced to the required reading section (section B in FIG. 4).
Step T4).

When the document table 12 is confirmed to be conveyed to the required reading section using the marks provided on the document table 12, the STAR
Stop operating the T key 20 and operate the PAUSE key 24 to release the paused state of the reading operation (step T5).
Operate the START key 20 again to start reading the original image of the required reading category (step T6).
, the reading operation is continued or interrupted depending on whether there is a document image in a category that does not need to be read before the end of the page (step T7). If there is a document image in a category that does not need to be read, press PAUSE.
Operate the key 24 to stop the document conveyance and reading operation again (step T8), and then press the STOP key 22.
is discharged by continuing to operate (steps T9 to T10).

Next, the processing when the first pattern and the second pattern coexist will be explained with reference to FIGS. 7 to 9. First, the COPY key 2 of the original transport operation key section 5
1 to set the copy mode (step U1), and set the original 15 on the original table 12 (step U2)
. Next, it is checked whether the classification requires reading from the leading edge of the document 15 that has started to be conveyed (step U3).
), if it is not a category that requires reading from the tip, PAU
The reading operation is stopped by operating the SE key 24 (step U4), and by continuing to operate the START key 20, the document 15 is conveyed and advanced to the required reading section (step U5). When the document table 12 is confirmed to be conveyed to the required reading section using marks, etc., the S
Stop operating the TART key 20 and operate the PAUSE key 24 to release the reading operation from the paused state (step U).
6) Operate the START key 20 again to start reading the original image of the required reading category (step U7).

Next, it is checked again whether the original image in the unnecessary reading section has reached the reading position S (
Step U8), if reached, press the PAUSE key 24
is operated to suspend the reading operation and proceed to the processing from step U13 onwards (step U9). On the other hand, if there is a classification that requires reading from the leading edge of the document 15 in step U3, S
The TART key 20 is operated to start reading the original image (step U10), and it is checked whether the original image in the unnecessary reading category has reached the reading position S (step U11). If the reading operation has been reached, operate the PAUSE key 24 to pause the reading operation and proceed to step U13.
The process moves on to subsequent processing (step U12).

Next, by continuing to operate the START key 20, the document 15 is conveyed and advances to the required reading section again (step U13). After confirming that the document has been conveyed to the required reading section using the marks provided on the document table 12, the operation of the START key 20 is stopped and the PAUSE key 24 is operated to cancel the paused state of the reading operation (step U14). It is checked whether it is a necessary reading classification (step U15). If the reading section is unnecessary, operate the PAUSE key 24 to pause the reading operation (step U16), and then press the STAR
By continuing to operate the T key 20, the original 15 is transported and advanced (step U17).

Next, the operation of the START key 20 is stopped and the PAUSE key 24 is operated during the conveyance to cancel the paused state of the reading operation (step U18), and it is checked whether or not to read the document image to the end of the page (step U19). When the document image is not read until the end of the page, operate the PAUSE key 24 to pause the reading operation (step U20), and then continue to operate the STOP key 22 to eject the document 15 (
Steps U21 to U23).

On the other hand, when reading the original image up to the page end in step U19, the original image is read up to the page end (step U24), and it is checked whether the next original is set (step U25). If the next original is not set, end this process and
If the next document is set, it is checked whether the category requires reading from the leading edge of the document 15 that has started to be conveyed (step U26). If the classification does not require reading from the tip, operate the PAUSE key 24 to pause the reading operation (step U27), and then press START.
By continuing to operate the key 20, the original 15 is conveyed and advanced (step U28), and when the reading position of the original is confirmed by marks etc. provided on the original table 12, the ST
Stop operating the ART key 20 and operate the PAUSE key 24 to release the reading operation from the paused state (step U2).
9) Check again whether the document image is in an unnecessary reading category (step U30). After confirming that the original image is in an unnecessary reading category, the PAUS
The E key 24 is operated to pause the reading operation and proceed to steps U35 and subsequent steps (step U31).

On the other hand, if there is a classification that requires reading from the leading edge of the original 15 in step U26, the original is conveyed to the reading position S and reading of the original image is started (step U3).
2) Check whether the document image in the unnecessary category has reached the reading position S (step U33). When it reaches this point, operate the PAUSE key 24 to pause the reading operation and move on to the processing from step U35 onwards (step U34).
. Next, by continuing to operate the START key 20, the document 15 is transported and advanced (step U35), and when it has advanced a predetermined amount, the operation of the START key is stopped and the PAU
The user operates the SE key 24 to cancel the paused state of the reading operation (step U37), and checks whether the original image is to be read to the end of the page (step U38). If the original image is not scanned to the end of the page, press PAUS.
The reading operation is stopped by operating the E key 24 (step U39), and then the document 15 is ejected by continuing to operate the STOP key 22 (steps U40 to U4).
2).

On the other hand, when reading the original image up to the end of the page in step U19, the original image is read up to the end of the page and ejected (step U43), and the process proceeds to step U2.
Returning to step 5 to check the next document, the same process is repeated. In the processes shown in FIGS. 7 to 9 above, steps U7 to U9, steps U10 to U12, and step U
The original image read by the reading section 2 during the processing sections 18 to U24 and steps U32 to U34 is converted into image data by the signal processing section 9 and temporarily stored in the memory, and then output to the recording section 10 and recorded. Ru.

On the other hand, in the processing shown in FIGS. 7 to 9,
During the processing of step U5, step U13, step U17, step U22, step U28, and step U35, the image signal read by the timing generation circuit 3 and the gate circuit 8 is not transmitted to the signal processing section 9, so that the image data is Not accumulated. Furthermore, while the document is being conveyed to the unnecessary category, the conveyance speed is faster than during normal image reading.

In other words, when the operator operates the PAUSE key 24 of the document transport operation key unit 5, the main thing is whether to temporarily pause the reading operation while reading the document image or to cancel the temporary pause. It is identified by the control unit 6, and a predetermined control signal is output to the timing generation circuit 3 and the motor control circuit 7 based on the identification result. In the timing generation circuit 3, when the reading operation is temporarily suspended, the image data storage operation signal in the reading section 2 and the signal processing section 9 is suspended, and when the reading operation is canceled, the suspension is canceled and the operation signal is enabled. let Therefore, image data of unnecessary categories is not stored in the memory in the signal processing unit 9, so it is possible to save thermal recording paper.
It is possible to continuously set the reading range by operating the . Furthermore, since the document conveyance speed for unnecessary sections is increased, the conveyance time can be shortened, and the power consumption of the battery of the facsimile machine 1 can be saved.

[0047] As methods for determining the presence or absence of a document, there are two methods: a method of keeping the copying start state on standby even after the first copy is completed, and a method of canceling the copy mode by a predetermined operation or a time setting after the completion of reading. However, in the former method,
In this embodiment, the latter method is used because there is a possibility that the original is set without canceling the copy mode when starting the facsimile mode, and the original is copied without the operator's awareness. shall be adopted.

Next, we will discuss the case of specifying the reading range of a document during facsimile transmission. To set the facsimile mode, operate the COPY key 21 of the document transport operation key section 5 (normally If the facsimile machine is in facsimile mode, no operation is necessary), then the reading range of the document image can be divided by switching to facsimile mode and performing the same key operations as above.

In this embodiment, in addition to the method of stopping the operation signal, a gate circuit 8 is provided in front of the signal processing section 9, and the gate circuit 8 transmits the image from the amplification waveform shaping section 4 to the signal processing section 9. A method of cutting signal transmission,
Furthermore, the gate circuit 8 is not provided in front of the signal processing section 9, and addresses of unnecessary sections of the accumulated image data are stored in the same memory, and when the image data is output from the signal processing section 9, , it is also possible to cut the image data at the unnecessary segment address. When the reading range is divided by address, the control of the document transport mechanism as described above is not necessary.

In this case, since image data of unnecessary categories is not stored in the memory, the total amount of current supplied to the thermal head of the recording section 10 during image recording is reduced, and the power consumption of the facsimile machine 1 is saved. This not only extends the battery operating time but also reduces the number of sheets of thermal recording paper used. Further, since the reading range of the original image can be specified by a simple key operation such as the PAUSE key 24 and while checking the reading position of the original, the reading range can be specified without staining the original. Furthermore, the facsimile machine 1 does not have a complicated reading range identification mechanism as in the past, but instead has a reading range designation mechanism with a simple configuration that requires only the addition of operation keys and circuit changes in the document transport operation key section 5. Since this can be realized, the facsimile device 1 can be made smaller for portable use.

In addition, when sending a facsimile, an operator on the receiving side who sees a received document that has been deleted and sent is required to do so on the sending side (the facsimile machine of this embodiment) to prevent it from being judged as a transmission error. When the main control unit 6 identifies an unnecessary category in step 1), it is also possible to automatically insert and write a message such as "Omit the following" in the deletion section under the control of the timing creation circuit 3 and send it. (See Figure 10). Insertion of such messages can be done using PAUS
It can be inserted either when the E key 24 is operated for the first time (when paused) or when operated for the second time (when released), but if it is inserted at both times, the message will be written when the PAUSE key 24 is operated. Just do it.

In the embodiments described above, an operation key is provided for instructing the transport mechanism, but an operation key for instructing the reading section 2 to suspend the reading operation may also be provided. There is also a method of specifying areas that do not need to be scanned outside of the document. For example, by using the document reading position display section 25 provided in the operation key section 5 for document conveyance, the document feed amount can be stabilized by the conveyance mechanism. It is also possible to display the feed amount in time and use it as a guide for the feed length, or to calculate the feed amount and display the feed length directly. In this case, since there is no need to look at the document being scanned, especially when copying or sending the same document many times, you can simplify the procedure for specifying the reading range from the second time onwards by making a note of the first display data. Therefore, the operability of the facsimile machine 1 can be improved.

FIGS. 11 to 15 are diagrams showing an embodiment of a facsimile apparatus to which the document reading apparatus according to the eighth, ninth, and tenth aspects of the invention is applied. FIG. 11 is a block diagram of the facsimile device 31, which includes a CPU 32, ROM 33, RAM 34, operation port 35, scanner 36, plotter 37, line control unit 3
8, a modem 39, an encoding/decoding section 40, and the like.

The CPU (control means) 32 controls each part of the facsimile machine 31 according to the basic program stored in the ROM 33 to execute the sequence as the facsimile machine 31, and also executes the reading range setting process of each invention of the present application. do. The ROM 33 stores a basic program for the facsimile device 31 and a reading range setting processing program of the present invention.

The RAM 34 stores data for executing the basic program of the facsimile device 31 and data for executing the reading range setting processing program of the present invention. The operation port 35 transmits operation data keyed in by the operator to each part. The operation port 35 of this embodiment also has various operation keys for instructing the rotation direction of the conveyance roller of the document conveyance mechanism when specifying the document reading range, which will be described later, and various operation keys for instructing the document image reading range. Operation keys are prepared, such as those shown in FIG. 12, for example. In FIG. 12, the operation port 35 includes a START key 41 for instructing the start of the document reading operation, a STOP key 42 for instructing the stop of the document reading operation, a SWITCH key 43 for instructing forward rotation of the conveyance roller, and a SWITCH key 43 for instructing the forward rotation of the conveyance roller. A FEED key (reverse rotation instruction means) 44 is provided to instruct reverse rotation.

As the scanner 36, for example, an image scanner using a CCD is used, and the scanner 36 scans the document conveyed to the reading position at a predetermined scanning timing to read the image of the document. Further, as shown in FIG. 13, the main components of the document transport mechanism in the scanner 36 include transport rollers 46 and 47 that transport the document 45 to the reading position S, and a sensor 48 that detects the leading and trailing edges of the document.
It is composed of etc. These conveyance rollers 46 and 47 are connected to a SWITCH key 43 and F provided in the operation port.
The conveying direction shown in FIG. 13 is controlled as a forward direction, and the direction of pulling back is controlled as a reverse direction, according to an instruction from the EED key 44.

As the plotter 37, for example, a thermal recording device using a thermal element is used, and the plotter 37 prints an image directly on thermal recording paper or indirectly on ordinary recording paper via an ink sheet. Record. A line is connected to the line control unit 38, and image data is sent and received by facsimile communication with a destination facsimile terminal.

The modem 39 modulates the transmitted signal and demodulates the received signal. The encoding/decoding unit 40
Image data is encoded according to a predetermined encoding method, and the encoded image data is decoded. Next, the effect will be explained. In FIG. 13, during normal document reading operation,
When the document 45 is conveyed by the conveyance roller 46 and the leading edge is detected by the sensor 48, it is further conveyed to the reading position S and is temporarily put on standby. Here, when the START key 41 is operated by the operator from the operation port 35, the conveyance is restarted and the reading operation of the document image is started, and the presence or absence of the document 45 being conveyed is detected by the sensor 48. The scanned original image is sent to the scanner 3
6, the image data is output to the plotter 37 or the encoding/decoding section 40 for processing, depending on the operator's mode setting (copy mode or transmission mode) in the operation port 35. Next, when the rear end of the document is detected by the sensor 48, the reading operation is ended and the document 45 is discharged by the conveyance roller 47. If multiple originals are set, these operations are repeated.

In this embodiment, when the document 45 is in a standby state at the reading position S before the start of the reading operation, the operation port 3
5 by operating the SWITCH key 43 and FEED key 44 to rotate the transport rollers 46 and 47 in the normal and reverse directions to transport the original 45 to the reading position S as desired.
By operating the TART key 41, the reading start position of the original can be changed.

However, with this method, it is only possible to change the reading start position of the original, so it cannot deal with the case where the rear part of the original is deleted. Therefore, as shown in FIG. 14, by providing a reading length setting key (reading length setting means) 51 for setting the reading length and a numeric keypad 52 in the operation port 35, it is possible to set the reading start position and read from the reading start position. It is assumed that the length is directly set using the numeric keypad 52. In this case, when the document 45 is in a standby state at the reading position S, the SWITCH
Set the reading start position by operating the key 43 and the FEED key 44, operate the reading length setting key 51,
After operating the numeric keypad 52 to set the reading length, press S.
By operating the TART key 41, only the document image of a set length can be read from the reading start position of the document.

[0061] Therefore, only the required original image can be read and recorded or transmitted, line usage charges for facsimile communication can be saved, and the reading range can be set before transmission, so the operator can The user can move away from the facsimile machine 31. Furthermore, as a method for deleting the rear part of the document, as shown in FIG. By providing a setting key (end position setting means) 54, the reading start position and reading end position are set. In this case, manuscript 4
5 is in a standby state at the reading position S, the original 45 is conveyed to the reading start position by operating the SWITCH key 43 and the FEED key 44, and after operating the start point setting key 53, the SWITCH key 43 and the FEED key 4 are
The document is conveyed to the reading end position by the operation in step 4, and at this time, the number of steps in which the conveyance roller 46 is driven is counted in the RAM 34 (addition during normal rotation, subtraction during reverse rotation). When the reading length is conveyed to the end position, the end point setting key 54 is operated to determine and store the reading length. Next, by operating the START key 41, the document 45 is pulled back by the reading length, the reading operation is started from the reading start position, and the reading operation ends when the reading operation has been performed for the memorized reading length. be done.

Therefore, with this method, the reading range can be easily set without directly measuring the reading length, which further simplifies the operating procedure and further improves the operability of the facsimile machine 31. . As described above, in the facsimile device 31, the reading range specification function can be achieved by simply adding operation keys on the operation port 35 and changing the control method, making it easy to implement in a portable facsimile device and reducing the cost. It can be realized at low cost without significantly increasing the amount of energy consumed, and it is also possible to save power consumption and extend the life of the battery.

[0063] Furthermore, by applying the document reading device of the present invention not only to facsimile machines but also to various personal devices such as other portable copying devices, the performance and operability of each device can be improved at low cost. be able to.

[0064]

According to the invention as set forth in claim 1, the reading operation of the original image being conveyed to the reading position and the storage operation of the image data in the image memory can be controlled by the input stop instruction and stop release instruction of the read operation. According to the invention as set forth in claim 2, the deletion section of the read original image is set by controlling the read scanning timing by prohibiting the output of the image data read and accumulated during each instruction period.
The address data of the image data read and accumulated during each instruction period is stored, and when outputting the image data, the output of the image data of the stored address data is prohibited and a deletion section of the read original image is set. Therefore, the reading range of the document image being conveyed to the reading position can be arbitrarily designated and easily deleted, and the reading range designation function can be realized with a simple control configuration. As a result, if a document reading device equipped with the specified function is installed in a personal device such as a portable copying machine or a facsimile machine, the function can be improved without increasing the size and cost of the device.

According to the invention as set forth in claims 3 and 4, the reading operation of the original image being conveyed to the reading position and the operation of accumulating image data in the image memory are performed in response to an input instruction to stop the reading operation. The read scan timing is controlled by a stop release instruction, and a deletion section of the read original image is set by prohibiting the output of the image data read and accumulated during each instruction period, or the deletion section of the read original image is set by When outputting image data, output of the image data of the stored address data is prohibited and a deletion period of the read original image is set. Since the document conveyance speed is increased, it is possible to arbitrarily specify the reading range of the document image being conveyed to the reading position and easily delete it, and it is also possible to shorten the document conveyance time in the deletion section. The reading range designation function can be realized with a simple control configuration, and the operation time when the designation function is used can be shortened. As a result, if a document reading device equipped with the specified function is installed in a personal device such as a copying machine or a facsimile machine, the function can be improved without increasing the size and cost of the device, and the battery life can be improved. If installed in a powered portable personal device, the battery operating time can be extended.

According to the fifth aspect of the present invention, the reading operation of the original image being conveyed to the reading position and the storage operation of the image data in the image memory are performed according to the input stop instruction and stop release instruction of the read operation. By controlling the scanning timing and prohibiting the output of the image data read and accumulated during each instruction period, a deletion section of the read original image is set, or the image data read and accumulated during each instruction period is set. Stores the address data of the data, and when outputting image data, prohibits the output of the image data of the stored address data, sets a deletion section for the read original image, and outputs the read image data in the deletion section. Since the message data indicating deletion is added to the image data outside the deletion section and output, it is possible to arbitrarily specify the reading range of the document image being conveyed to the reading position and delete it easily. In addition, it is possible to clearly notify the deletion section of the read original image and realize the function of specifying the reading range with a simple control configuration. As a result, if a document reading device equipped with the specified function is installed in a personal device such as a portable copying machine or a facsimile machine, the function can be improved without increasing the size and cost of the device.

According to the sixth aspect of the invention, the reading operation of the original image being conveyed to the reading position and the storage operation of the image data in the image memory are performed according to the input instruction to stop the reading operation and the instruction to release the stoppage. By controlling the scanning timing and prohibiting the output of the image data read and accumulated during each instruction period, a deletion section of the read original image is set, or the image data read and accumulated during each instruction period is set. The address data of the data is stored, and when outputting image data, the output of the image data of the stored address data is prohibited and a deletion section of the read original image is set, and the area on the conveyance path in front of the reading position is visible. Since the deletion section is set by identifying the reading position of the document image being conveyed by the means for identifying the position of the document being conveyed, which is provided at a certain position, the conveyance position of the document image being conveyed can be confirmed at the reading position. However, the reading range can be arbitrarily designated and deleted easily, and the reading range designation function can be realized with a simple control configuration. As a result, if a document reading device equipped with the specified function is installed in a personal device such as a portable copying machine or a facsimile machine, the function can be improved without increasing the size and cost of the device.

According to the seventh aspect of the invention, the reading operation of the original image being conveyed to the reading position and the operation of accumulating image data in the image memory are read based on the input reading operation stop instruction and stop release instruction. By controlling the scanning timing and prohibiting the output of the image data read and accumulated during each instruction period, a deletion section of the read original image is set, or the image data read and accumulated during each instruction period is set. Stores the address data of the data, and when outputting image data, prohibits the output of the image data of the stored address data, sets the deletion section of the read original image, and displays the reading position of the original image being transported. Since the deletion section is set in advance, it is possible to easily specify the reading range and delete the image while checking the display of the transport position of the original image being transported to the reading position, with a simple control configuration. A reading range specification function can be realized. As a result, if a document reading device equipped with the specified function is installed in a personal device such as a portable copying machine or a facsimile machine, the function can be improved without increasing the size and cost of the device.

According to the invention described in claim 8, when the reading start position and the reading length from the reading start position of the document image being conveyed to the reading position are specified, the reading start position set as the instruction is set. Since the document image is read in the length range from , and the image data of the reading range is output, the reading range can be easily set by arbitrarily instructing the reading start position of the document image conveyed to the reading position. The reading range designation function can be realized with a simple control configuration. As a result, if a document reading device equipped with the specified function is installed in a personal device such as a portable copying machine or a facsimile machine, the function can be improved without increasing the size and cost of the device.

According to the ninth aspect of the invention, when the reading start position of the document image being conveyed to the reading position is specified,
A document image of a predetermined length range from the designated reading start position is read, image data of the reading range is output, and an instruction is input to the document transport unit to reverse the document conveyed to the reading start position. The reading start position can be changed by pulling back by being moved to the reading position and then changing the reading start position by indicating the reading start position again.The reading range can be easily changed by specifying the reading start position of the original image conveyed to the reading position. In addition to being able to set the reading start position, the reading start position can be easily changed, and the reading range designation function can be realized with a simple control configuration. As a result, if a document reading device equipped with the specified function is installed in a personal device such as a portable copying machine or a facsimile machine, the function can be improved without increasing the size and cost of the device.

According to the tenth aspect of the invention, when the reading start position and the reading end position from the reading start position of the document image being conveyed to the reading position are specified, the reading is performed from the specified reading start position. Since the document image in the range up to the end position is read and the image data of the reading range is output, the reading range can be easily changed by specifying the reading start position and end position of the document image conveyed to the reading position. The reading range specification function can be realized with a simple control configuration. the result,
If a document reading device equipped with the specified function is installed in a personal device such as a portable copying device or a facsimile device, the function can be improved without increasing the size and cost of the device.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a facsimile machine to which a document reading device according to the invention according to claims 1 to 7 is applied.

FIG. 2 is a configuration diagram of an operation key section for document conveyance of a facsimile machine to which the document reading device according to the invention according to claims 1 to 7 is applied.

FIG. 3 is a configuration diagram of a document conveying mechanism of a facsimile machine to which the document reading device according to the invention according to claims 1 to 7 is applied.

FIG. 4 is a diagram showing a document read by a facsimile machine to which the document reading device according to the invention according to claims 1 to 7 is applied.

FIG. 5 is a flowchart showing a reading range designation process of a facsimile machine to which the document reading device according to the invention according to claims 1 to 7 is applied.

FIG. 6 is a flowchart showing another reading range designation process of a facsimile machine to which the document reading device according to the invention according to claims 1 to 7 is applied.

FIG. 7 is a flowchart illustrating a part of a process of specifying a reading range for a plurality of originals by a facsimile machine to which the original reading apparatus according to the invention according to claims 1 to 7 is applied.

FIG. 8 is a flowchart showing a continuation of the reading range designation process of the facsimile machine in FIG. 7;

FIG. 9 is a flowchart showing a continuation of the reading range designation process of the facsimile machine in FIG. 7;

FIG. 10 is a diagram illustrating an example of recording paper output by the reading range designation process of the facsimile machine of FIGS. 7 to 9;

FIG. 11 is a block diagram of a facsimile machine to which the document reading device according to the invention according to claims 8 to 10 is applied.

FIG. 12 is a configuration diagram of an operation port of a facsimile machine to which the document reading device according to the invention according to claims 8 to 10 is applied.

FIG. 13 is a configuration diagram of a document conveyance mechanism of a scanner of a facsimile machine to which the document reading device according to the invention according to claims 8 to 10 is applied.

FIG. 14 is a configuration diagram when a reading length setting key is added to the operation port of the facsimile machine shown in FIG. 12;

15 is a configuration diagram when a reading end point setting key is added to the operation port of the facsimile machine shown in FIG. 12; FIG.

[Explanation of symbols]

1, 31 Facsimile machine 2 Reading section 3 Timing creation circuit 4 Amplification waveform shaping section 5 Operation key section for document transport 6 Main control section 7 Motor control circuit 8 Gate circuit 9 Signal processing circuit 10 Recording Department 11 Transmission section 12 Manuscript table 13a, 13b Cover 14 Conveyance roller 15, 45 Manuscript 20 START key 21 COPY key 22 STOP key 23 DETAIL key 24 PAUSE key 25 Original reading position display section 32 CPU 33 ROM 34 RAM 35 Operation port 36 Scanner 37 Plotter 38 Line control section 39 Modem 40 Encoding/decoding section 41 START key 42 STOP key 43 SWITCH key 44 FEED key 46, 47 Conveyance roller 48 Sensor 51 Reading length setting key 52 Numeric keypad 53 Start point setting key 54 End point setting key

Claims (10)

[Claims] 1. A document conveyance unit that conveys a set document to a reading position; a reading unit that scans and reads the document image conveyed to the reading position at a predetermined scanning interval and outputs image data; In a document reading device comprising: an image memory for storing image data read by a reading unit in a predetermined address area, and for outputting the read image data by temporarily storing the read image data in the image memory, stopping a reading operation in the reading unit; a reading operation instructing means for instructing to cancel the stop; a reading operation control means for controlling the stop and stop canceling timing of the reading operation in accordance with the scanning timing of the reading unit according to each instruction from the reading operation instructing means; accumulation operation control means for controlling the accumulation operation of image data in the image memory in accordance with the timing of stopping and canceling the stoppage of the operation; A document reading device characterized in that a deletion section is set in which the reading of the document image conveyed to the reading position and the accumulation of image data during the period are prohibited and the read document image is deleted. 2. A document conveyance unit that conveys a set document to a reading position; a reading unit that scans and reads the document image conveyed to the reading position at a predetermined scanning interval and outputs image data; In a document reading device comprising an image memory for storing image data read by a reading unit in a predetermined address area, and for outputting the read image data by temporarily storing it in the image memory, stopping the reading operation in the reading unit and reading operation instructing means for instructing cancellation of the stop; and prohibiting reading of the original image conveyed to the reading position during each instruction period in accordance with the scanning timing of the reading unit in accordance with each instruction from the reading operation instructing means. a deletion section setting means for setting a deletion section for deleting a read original image, a storage section for storing address data of image data to be stored in the image memory in the deletion section, and a storage section for storing image data output from the image memory. At this time, an output control means is provided which prohibits the output of the image data accumulated in the deletion section based on the address data stored in the storage means, and according to an instruction to stop and cancel the reading operation from the reading operation instruction means. A document reading device characterized in that output of image data accumulated in an image memory is prohibited during a set deletion period. 3. The document reading device according to claim 1 or 2, wherein the conveyance operation of the document conveyance section is stopped in response to an instruction to stop the reading operation from the reading operation instruction means, and after the stop, the document conveyance is stopped. 1. A document reading device comprising a conveyance speed instructing means for outputting an instruction to increase the conveyance speed of a copy. 4. The document reading device according to claim 1 or 2, wherein the reading position is set in a deletion section of a read document image set by a reading operation stop and stop release instruction from the reading operation instruction means. A document reading device characterized by increasing the conveyance speed of a conveyed document. 5. The document reading device according to claim 1 or 2, wherein image data is read in a deletion section of a read document image set by a reading operation stop and stop release instruction from the reading operation instruction means. What is claimed is: 1. A document reading device characterized in that message data indicating that a section has been deleted is added to image data other than the deleted section and outputted. 6. The document reading device according to claim 1 or 2, wherein the identification means for identifying the reading position of the document image conveyed to the reading position is located at a visible position on the conveyance path in front of the reading position. 1. A document reading device, characterized in that the deletion section is set by identifying a reading position of a document image being conveyed by an identification means. 7. The document reading device according to claim 1 or 2, further comprising display means for displaying reading position information of the document image based on the conveyance speed of the document being conveyed to the reading position. A document reading device characterized by: 8. A document transport unit that transports the set document to a reading position; and a reading unit that scans and reads the document image transported to the reading position at a predetermined scanning interval and outputs image data. In a document reading device that outputs a read document image as image data, the document reading device includes a start position indicating means for indicating a reading start position of the document image conveyed to the reading position, and a reading length of the document image from the reading start position. a reading length setting means for setting the reading length, and a control means for controlling the document transport section and the reading section based on the instructions and settings of the start position instruction means and the reading length setting means,
A document reading device characterized in that a reading range of a document image conveyed to the reading position is set based on an instructed reading start position and a set reading length. 9. A document transport unit that transports the set document to a reading position; and a reading unit that scans and reads the document image transported to the reading position at a predetermined scanning interval and outputs image data. In a document reading device that outputs a read document image as image data, the document reading device includes: a start position instructing means for instructing a reading start position of a document image conveyed to the reading position; and a document conveying unit for conveying the document to the reading position. A reversal instructing means is provided for outputting an instruction to the document conveyance section to change the direction of the forward rotation to a reverse rotation, so that the document conveyed to the reading position can be pulled back by the reversal instruction. A document reading device that uses 10. A document transport unit that transports the set original to a reading position; and a reading unit that scans and reads the original image transported to the reading position at a predetermined scanning interval and outputs image data. In a document reading device that outputs a read document image as image data, a start position instructing device instructs a reading start position of a document image conveyed to the reading position, and a document image instructed by the start position instructing device. 1. A document reading device comprising: end position indicating means for indicating a reading end position with respect to a reading start position.