JPH10276307A - Copy device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten time required for copying an original by performing control for starting recording after the lapse of delay time, which is determined based on an original size and an enlargement/reduction scale, from the start of reading so as to complete the recording of image almost simultaneously with the reading end of original image. SOLUTION: Based on the original size and enlargement/reduction scale of original to be copied and the data table of original size, enlargement/ reduction scale and delay time stored in a RAM 84, a CPU 82 determines the delay time from the reading start of reading part having a light source 37 and an imaging device 43 to the recording end of recording part 17. Further, the CPU 82 successively starts the reading part and the recording part 17 based on the determined delay time and performs control so that the recording end of recording part 17 can be a little delayed than the reading end of reading part. Thus, the time required for copying the original can be shortened than a copy device in which recording is started after the end of reading and storage of original image.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying machine such as a copying machine or a facsimile machine for reading an image on a document and recording the image on a recording sheet.

[0002]

2. Description of the Related Art A copying apparatus of this type generally includes a flatbed reading section (FBS), an image storage section, and a recording section. An image of a document is read by the flatbed reading section and temporarily stored in the image storage section. It is designed to be stored.
In the conventional copying apparatus, for example, after the reading of the original image for one page and the storage of the image data are completed, the recording operation of the recording unit is started, and the image data for one page is stored in the image storage unit. The recording unit records the data on recording paper while reading the data from the recording paper.

[0003]

As described above, in this conventional copying apparatus, since the recording is performed after the storage of the image data is completed, the total time required for copying the original document becomes longer. was there.

The present invention has been made by paying attention to such problems existing in the conventional technology. An object of the present invention is to provide a copying apparatus capable of reducing the time required for copying a document.

[0005]

According to a first aspect of the present invention, there is provided a flatbed reading section, an image storage section, and a recording section, wherein an image of a document read by the reading section is provided. Is stored once in the image storage unit, and in a copying apparatus in which the image is read from the image storage unit and recorded in the recording unit, the recording of the image is terminated almost simultaneously with the termination of the reading of the original image. A control unit for controlling the operation of the recording unit is provided.

According to a second aspect of the present invention, in the copying apparatus according to the first aspect, the control means controls the recording to be started with a delay from the start of reading, and the delay time is determined by the document size and the enlargement / reduction. This is determined based on the magnification.

According to a third aspect of the present invention, in the copying apparatus according to the second aspect, the control means controls the recording to be started with a delay from the start of reading, and the delay time is determined by the document size and the enlargement / reduction. This is determined based on the magnification.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is embodied in a copy / facsimile multifunction peripheral will be described below with reference to the drawings.

As shown in FIG. 1, a document feeding section 12, a document placing section 13, a reading section 14, a cut sheet supplying section 15, a recording section 17, , And a cut sheet discharge unit 18 are provided.

As shown in FIGS. 1 and 2, the document feeder 12 comprises a document table 22 on which a document 21 is placed, and a document 21.
Rollers 23 for feeding the separated originals 21 one by one, a plurality of feed rollers 24 for feeding the separated originals 21, a light transmitting plate 25 through which the originals 21 pass, and a stock of the discharged originals 21 A document discharge table 26 is provided.

A document presence sensor 27 is arranged to face the document table 22 and outputs a detection signal when the document 21 is placed on the document table 22. The document discharge sensor 28 is disposed to face the document discharge table 26 and the document 2 is placed on the document discharge table 26.
When 1 is discharged, a detection signal is output.

As shown in FIGS. 1 to 3, the document placing portion 13 has a transparent document placing plate 31 on which a document 21 is placed on an upper surface, and an opening / closing turntable on the document placing plate 31. And a holding lid 32 movably arranged. The document table 22 and the document discharge table 26 of the document feeding section 12 are disposed on a press cover 32 of the document placing section 13 and are opened and closed integrally with the press cover 32. ing. The angle sensor 33 is disposed opposite to the vicinity of the center of rotation of the holding lid 32, and outputs a detection signal when the opening angle A1 of the holding lid 32 is equal to or smaller than a predetermined value.

As shown in FIG. 1 and FIG.
Reference numeral 4 denotes a light source 37 for irradiating the original 21 passing on the light transmitting plate 25 or the original 21 placed on the original placing plate 31 with light.
To change the optical path of the reflected light from the document 21
Mirrors 38, 39, 40, and a moving mechanism 41 for moving the light source 37 and the first to third mirrors 38, 39, 40
And Further, the reading unit 14 includes the third mirror 4
A condensing lens 42 for converging light from 0, and an image pickup device (CCD) 43 for reading an image on the document 21 based on light incident through the condensing lens 42 are provided.

The moving mechanism 41 includes a pair of left and right large diameter pulleys 44 and 45, a pair of left and right small diameter pulleys 46 and 47,
First belt 48 mounted between large-diameter pulleys 44 and 45
And the second belt 4 mounted between the small-diameter pulleys 46 and 47
9 is provided. Further, the moving mechanism 41 includes a first carriage 50 connected to the first belt 48, a second carriage 51 connected to the second belt 49, and a step motor 52.

The diameter of the large-diameter pulleys 44, 45 is formed to be twice the diameter of the small-diameter pulleys 46, 47. The large-diameter pulley 44 and the small-diameter pulley 46 on the left side are integrally rotatably connected on the same axis, and are operatively connected to a step motor 52. Further, a light source 37 and a first mirror 38 are supported on the first carriage 50, and a second mirror 39 and a third mirror 39 are provided on the second carriage 51.
A mirror 40 is supported.

When the large-diameter pulleys 44 and 45 and the small-diameter pulleys 46 and 47 are rotated by the step motor 52, the first and second carriages 50 and 50 are rotated via the first and second belts 48 and 49. 51 is moved. At this time, the first carriage 50 is moved at twice the moving speed of the second carriage 51. Thereby, both carriages 5
0 and 51 are intermediate standby positions P1 as shown in FIG.
A first document reading position P <b> 2 which is located immediately below the light transmitting plate 25 and faces the same.
And a start point P3 of a second document reading position located just below the reference end 31a of the document placing plate 31.

A plurality of automatic document reading units (ADFs) are constituted by the document feeding unit 12 and the reading unit 14, and light is transmitted when the carriages 50 and 51 are moved to the first document reading position P2. The image of the document 21 passing on the plate 25 is read. Further, a flatbed reading section (FBS) is configured by the document placing section 13 and the reading section 14, and after the carriages 50 and 51 are moved and arranged at the start point P3 of the second document reading position, they move toward the end point P4. Moved
The image of the original 21 placed on the original placing plate 31 is read.

As shown in FIGS. 1 and 2, the reading position sensor 53 is disposed below the reference end 31a of the original placing plate 31, and the carriages 50 and 51 are positioned at the start point P3 of the second original reading position. Outputs a detection signal when moved. FIG.
As shown in (1), the document length sensor 54 is disposed at a position spaced a predetermined distance from the reference end 31a of the document placing plate 31, and detects the length of the document 21 placed on the document placing plate 31. I do. The reading unit 14 including the light source 37 and the image pickup device 43 also serves as a document width sensor. When the first carriage 50 is moved to the start point P3 of the second document reading position, the document is read in the main scanning direction. When reading 21
The width of the document 21 is detected.

The document length sensor 54 and the image sensor 43 constitute a detecting means for detecting the size of the document 21. Then, the original placing plate 3
After the original 21 has been set on the document 1, when the presser lid 32 is closed to a predetermined opening angle A1 and a detection signal is output from the angle sensor 33, the original length sensor 54 and the image sensor 43 outputs a document size detection signal.

As shown in FIG. 1, the cut sheet supply unit 1
Reference numeral 5 includes a plurality (two in this embodiment) of paper feed cassettes 57 containing cut sheets 56 of a predetermined size in a stacked state. Further, the cut sheet supply unit 15 includes a sheet feed roller 58 that feeds the cut sheets 56 in each sheet cassette 57 one by one toward the recording unit 17, and a guide plate 59 that guides the feed of the cut sheets 56. And Note that cut papers 56 having different sizes are stored in the respective paper feed cassettes 57, and their sizes are determined by the cut paper sensors 60a and 60a.
0b.

The recording section 17 includes a photosensitive drum 68, a charger 69 for uniformly charging the surface of the photosensitive drum 68 to a predetermined potential, and an exposing device for forming an electrostatic latent image of an image on the photosensitive drum 68. And a developing unit 71 for supplying toner to the electrostatic latent image on the photosensitive drum 68 to visualize the latent image. Further, the recording unit 17 includes a feed roller 72 for feeding the cut sheet 56 to the photosensitive drum 68, a transfer unit 73 for transferring the toner image from the photosensitive drum 68 to the cut sheet 56, And a heat fixing device 74 for heat fixing the toner image.

The cut sheet discharge section 18 includes a discharge roller 77 for discharging the recorded cut sheet 56, and a cut sheet 56.
And a discharge tray 79 for storing the discharged cut paper 56.

Next, the circuit configuration of the copy / facsimile multifunction machine configured as described above will be described. As shown in FIG. 5, a central processing unit (CPU) 82 controls the operation of each unit of the multifunction peripheral. Read only memory (ROM)
Reference numeral 83 stores various control programs necessary for the operation of the multifunction peripheral. Random access memory (RAM) 84
Stores a data table relating to the document size, enlargement / reduction (hereinafter referred to as “enlargement / reduction”) magnification, and the delay time from the start of reading to the start of recording, and temporarily stores data obtained with the execution of the control program. Remember. The CPU 82, ROM 83, and RAM 84 constitute control means.

The angle sensor 33 and the original length sensor 5
4 outputs a detection signal to the CPU 82. Reading unit 14
The original 21 through the light transmitting plate 25 or the original placing plate 31
Read the above image and convert the black and white binary image data to CP
Output to U82. Image memory 85 as image storage unit
Temporarily stores received image data and image data read by the reading unit 14. The recording unit 17 records the received image data and the image data read by the reading unit 14 on a cut sheet 56 or the like.

The display unit 86 includes a liquid crystal display panel and LEDs, and displays various information such as an operation state of the apparatus such as "copy mode", "communication mode", "standby", and "device abnormality". . The operation unit 87 includes a copy / communication key 87
a, a start key 87b, a data key 87c, and other various operation keys. The copy / communication key 87a is operated to select whether to execute the copy mode or the facsimile communication mode. The start key 87b is operated to start a copy operation or a facsimile communication operation. The data input key 87c is operated when setting and inputting the enlargement / reduction ratio of the read record in the copy mode.

The modem 88 modulates and demodulates transmission and reception data. The network control unit (NCU) 89 has a function of controlling the closing and opening of the telephone line L1, and a function of detecting transmission and reception of a dial pulse corresponding to the fax number of the other party.

When copying the original 21 using the flatbed reading unit (FBS), the CPU 82
The operation of the reading unit 14 and the recording unit 17 is controlled so that the recording of the image is completed almost simultaneously with the completion of the reading of the document image.
In this case, based on the document size, the enlargement / reduction ratio, and the data table of the document size, the enlargement / reduction ratio, and the delay time stored in the RAM 84, the CPU 82
Then, a delay time from the start of reading of the data to the start of recording of the recording unit 17 is determined. Further, the CPU 82 sequentially starts the reading unit 14 and the recording unit 17 based on the delay time, and controls the recording unit 17 to end the recording slightly later than the reading unit 14 ends the reading.

That is, the moving speed of the light source 37 for irradiating the original 21 and the first carriage 50 of the reading unit 14 for obtaining the original image is lower than the speed at which the cut sheet 56 passes through the recording unit 17. Therefore, in order to end the recording of the image almost at the same time as the end of the reading of the original image, the start of the recording is delayed after the start of the reading. In this case, in this embodiment, the moving range of the first carriage 50 is constant, but the cut paper 56 has a plurality of sizes. Therefore, a plurality of recording start delay time data is stored in the table according to the type of the cut sheet 56.

Also, in the case of reduced recording, the recording range becomes small and a smaller cut sheet 56 is selected, so that the delay time of the recording start becomes long. Since the time is shortened, the data table stores delay time data based on the relationship between the scaling ratio and the size of the cut sheet.

Next, the operation of the copy / facsimile multifunction peripheral of this embodiment when copying the original 21 will be described with reference to the flowchart shown in FIG. This flowchart proceeds under the control of the CPU 82 based on a control program stored in the ROM 83.

When copying the original 21, the original 21 is placed on the original placing plate 31 of the original placing section 13 in the flatbed reading section (FBS), and the pressing lid 32 is closed. Then, a detection signal indicating the end of document setting is output from the angle sensor 33, and at this time, data indicating the size of the document 21 is detected by the document length sensor 54 and the image sensor 43, and the data input key on the operation unit 87. Copy magnification and cut sheet sensor 60 input from 87c
The size of the cut sheet 56 is confirmed by a and 60b (S1).

Thereafter, when the start switch 87b is pressed down, reading of the document 21 by the reading section 14 is started (S2). In this state, the optimum size of the cut sheet 56 is selected based on the document size and the enlargement / reduction ratio, and the recording is performed from the start of reading by the reading unit 14 according to the table of the document size, the enlargement / reduction ratio, and the delay time stored in the RAM 84. The delay time until the start of recording by the unit 17 is determined,
It is determined whether or not the recording start point has been reached (S
3). Until the recording start time is reached, the reading unit 1
The image data read in step 4 is temporarily stored in the image memory 85 every several lines (S4).

In the determination in S3, when the recording start time is reached, the cut sheet 56 is started to be supplied from the cut sheet supply section 15, and the recording section 17 starts recording an image (S5). Thereafter, the image data is recorded on the cut sheet 56 by the recording unit 17 while the image on the document 21 is read by the reading unit 14 by several lines (S6) (S7). In this state, it is determined whether the reading of the document 21 by the reading unit 14 has been completed (S8), and the operations of S6 to S8 are repeatedly executed until the reading is completed.

When the reading of the original 21 is completed in this way, it is determined whether or not the recording of the image data by the recording unit 17 has been completed (S9). Until the recording is completed, the operations of S7 and S8 are performed. Is repeatedly executed. Then, after the reading of the document 21 is completed, when the recording of the image data is completed after a short time, all the processes are completed.

Next, the effects that can be expected from the present embodiment will be described below. In the copying apparatus of the present embodiment, the image of the document 21 read by the flatbed reading unit (FBS) is temporarily stored in the image memory 85 as an image storage unit, and the image is read from the image memory 85. The recording is performed by the recording unit 17. The operation of the flatbed reading unit and the recording unit 17 is controlled by the CPU 82, and the recording of the image is completed almost simultaneously with the completion of the reading of the document image. Therefore, the time required for copying the document 21 can be reduced as compared with the conventional copying apparatus in which recording is started after reading and storing the document image.

In the copying apparatus of the present embodiment, the CPU 82
From the start of reading of the flatbed reading unit to the recording unit 1
The delay time until the start of recording of No. 7 is controlled to be changed, so that the end of recording is slightly delayed from the end of reading. Therefore, the output of the image data is not lost during the recording by the recording unit 17, and the reading and recording of the document image can be performed from the start to the end without any trouble.

In the copying apparatus of this embodiment, the delay time from the start of reading by the reading unit to the start of recording by the recording unit 17 is adjusted based on the document size and the enlargement / reduction ratio. Therefore, regardless of the size of the document, or even when the document 21 is enlarged or reduced, the time required for copying can be effectively reduced without causing erroneous copying.

The above embodiment can be embodied with the following modifications. When the original 21 is copied by the automatic multiple document reading unit (ADF), the original 2 is also copied by the flatbed reading unit (FBS).
As in the case of copy 1, the delay time from the start of reading by the reading unit to the start of recording by the recording unit 17 is determined based on the document size and the enlargement / reduction ratio. To be configured.

In this case, an automatic multiple document reading section (ADF)
The detection of the size of the original 21 set in the scanner 21 is such that when one original 21 is read by the reading unit 14, the original 21 is identified based on the image data.

The carriage 5 according to the length of the original 21
The present invention is embodied in a copying apparatus of a type in which the moving range of 0,51 changes. That is, if the document 21 is long, the moving range of the carriages 50 and 51 becomes long,
The present invention is embodied in a copying apparatus of a type in which the moving range is shortened if it is short. In this case, the time required for reading varies according to the document size, and the end of reading varies. Therefore, it is necessary to adjust the recording end time by varying the recording start delay time.

Further, the technical idea grasped from the embodiment will be described below. 2. The copying apparatus according to claim 1, wherein the control unit controls the recording to be started with a delay from the start of reading.

The control device according to claim 1, wherein the control means controls the recording to be started with a delay from the start of reading, and the delay time is adjusted according to the document size, the enlargement / reduction ratio, and the recording paper size. Copier.

[0043]

The present invention is configured as described above, and has the following effects. According to the first aspect of the present invention, the time required for copying a document can be reduced.

According to the second aspect of the present invention, the image data read from the original does not disappear during the recording by the recording section, and the reading and recording of the original image are performed without any trouble from the start to the end. be able to.

According to the third aspect of the present invention, the time required for copying can be effectively reduced even when the original is enlarged or reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating an embodiment of a multifunction peripheral embodying the present invention.

FIG. 2 is an enlarged sectional view of a main part of the copying apparatus.

FIG. 3 is a side view of a main part of the copying apparatus.

FIG. 4 is a plan view of a document placing plate of the copying apparatus.

FIG. 5 is a block diagram showing a circuit configuration of the multifunction peripheral.

FIG. 6 is a flowchart illustrating an original copying operation.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 ... Device main body, 12 ... Document feed part, 13 ... Document placement part, 14 ... Reading part, 15 ... Cut sheet supply part, 17 ... Recording part, 21 ... Document, 22 ... Document platen, 25 ... Translucent plate , 31 ...
Document placement plate, 37 light source, 43 image sensor constituting detection means, 54 document length sensor constituting detection means, 8
2 CPU constituting the control means, 83 ROM constituting the control means, 84 RAM constituting the control means, 85 ...
Image memory as image storage unit 87 operation unit 87c
... Data input keys.

Claims (3)

[Claims] An image processing apparatus includes a flatbed reading unit, an image storage unit, and a recording unit. The image of a document read by the reading unit is temporarily stored in the image storage unit, and the image is read from the image storage unit and stored in the recording unit. In a copying apparatus adapted to record, a control means for controlling the operation of a recording unit is provided so that recording of an image is completed almost simultaneously with completion of reading of the original image. 2. The copying apparatus according to claim 1, wherein said control means controls the recording operation to end slightly later than the end of reading. 3. The copying apparatus according to claim 1, wherein the control unit controls the recording to be started with a delay from the start of the reading, and the delay time is determined based on the document size and the enlargement / reduction ratio. apparatus.