CN101115119B - Paging method of sequential scanning - Google Patents
Paging method of sequential scanning Download PDFInfo
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- CN101115119B CN101115119B CN2006100295037A CN200610029503A CN101115119B CN 101115119 B CN101115119 B CN 101115119B CN 2006100295037 A CN2006100295037 A CN 2006100295037A CN 200610029503 A CN200610029503 A CN 200610029503A CN 101115119 B CN101115119 B CN 101115119B
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Abstract
A continuous scanning paging method comprises such steps: a plurality of files are fed to pass the scanning line; before the first file of a plurality of files reaches to the scanning line, a plurality of images that can be captured at the scanning line begin to continuously be captured, which is stopped until the final file of the files being fed to pass the scanning line, thus generating a plurality of pages of analog signals; a plurality of pages of analog signals are dealt into a plurality of pages of digital signals; and image processing of the pages of digital signals is carried out to produce a plurality of signal page digital signals corresponding to the files.
Description
Technical field
The present invention relates to a kind of paging method of continuous sweep, relate in particular to scan module is scanned the method that single image that multiple page documents produces carries out skew corrected and is divided into the multipage image.
Background technology
Traditional paper feeding scanner is when carrying out the paper feed type scanning operation, and paper feed mechanism can be presented file by scanning area one by one, so that scan module is scanned these files.Yet when the rolling wheel wear of paper feed mechanism or user correctly do not put file, the file that is fed will have the phenomenon of crooked (skew).
Fig. 1 shows the schematic diagram of the file 100 that traditional paper feeding scanner scans.Fig. 2 shows the result schematic diagram of the file 100 that traditional paper feeding scanner scanning is crooked.As shown in Figure 1, the mode of the leading edge 101 of scanner decision file 100, usually when touch this detector by file detector detecting file, walked predetermined step number through one section preset time or through the stepper motor that drives the paper feed mechanism operation then after, begin pick-up image again.
Yet, adopt the mode of detector can cause the error of leading edge detecting usually, when scan module too early during pick-up image, can cause the image of file trailing edge 102 to omit; When scan module too late during pick-up image, can cause near the images the document leading edge 101 to omit.
Except the error of leading edge detecting, when the file of being presented 100 has when crooked, scanning result is abnormal.As shown in Figure 2, four of file 100 corners 110,120,130 and 140 are dropped on beyond the sweep limits 200.Therefore, the image information in these four corners will be omitted, and this situation can not allow the user accept gradually.
Summary of the invention
Therefore, an object of the present invention is to provide a kind of paging method of continuous sweep, scan, and strengthen sweep limits, and then utilize the program of image processing to define the effect of border and paging by a plurality of files being used as a file.
For reaching above-mentioned purpose, the invention provides a kind of paging method of continuous sweep, comprise following steps: present a plurality of files one by one so that it passes through scan line; Wherein each this document comprises leading edge, trailing edge, left border and right border; First file in a plurality of files arrives before the scan line, begins to continue a plurality of images that acquisition can capture at scan line, and the definitive document in these files is fed by scan line fully and just stops later on, produces the multipage analog signal thus; The multipage analog is become the multipage digital signal; Reach according to leading edge, trailing edge, left border and the right border of each this document the multipage digital signal is carried out the image processing program to produce a plurality of single page digital signals corresponding to these files.
Aforesaid image processing program can comprise corresponding to the conversion of image cutting process or corresponding to the conversion of image cutting process and image rotary course.By this, can accurately utilize the mode of image processing to obtain desired scanning result.
Description of drawings
Fig. 1 shows the schematic diagram of the file that traditional paper feeding scanner scans;
Fig. 2 shows the result's of the file that traditional paper feeding scanner scanning is crooked schematic diagram;
The schematic diagram of the paper feeding scanner of the paging method of Fig. 3 to 6 display application continuous sweep of the present invention;
Fig. 7 shows the flow chart of the paging method of continuous sweep of the present invention;
Fig. 8 shows the schematic diagram of a plurality of files of the paging method that is used for continuous sweep of the present invention;
Fig. 9 shows the schematic diagram corresponding to the image of multipage digital signal S2 of the present invention;
Figure 10 shows the schematic diagram corresponding to the image of a plurality of single page digital signals of the present invention;
Several examples of the paging method of Figure 11 to 15 display application continuous sweep of the present invention.
Embodiment
The schematic diagram of the paper feeding scanner of the paging method of Fig. 3 to 6 display application continuous sweep of the present invention.Shown in Fig. 3 to 6, paper feeding scanner of the present invention comprises scan module 10, paper feed mechanism 20 and file detector 30.Microprocessor 40 is usually located on the computer equipment (not shown) that is connected with scanner, or also configurable on scanner, and carries out the paging processing according to software or firmware.File detector 30 is omissible members, just can allow follow-up paging processing be convenient to carry out as long as can scan some images more.
When scanning, paper feed mechanism 20 is presented the first file P1 and is touched file detector 30, and when file detector 30 output detection signals to the control circuit (not shown) of scan module 10 begins pick-up image with notice scan module 10.For near the image the document leading edge is omitted, scan module 10 can be designed to ahead of time that a period of time begins scanning.That is, at the first file P1 still (as shown in Figure 3) before the no show scan line SL, scan module just can begin to capture the image of the first file P1.After leaving scan line SL a period of time, the trailing edge that the operation of pick-up image will continue to proceed to definitive document PF just can stop, as shown in Figure 6.When file detector 30 did not exist, scan module 10 was configured to when paper feed mechanism begins to operate with regard to pick-up image.
In the present embodiment, explain with two file P1 and PF.But this does not limit the invention to only can capture the situation of two files.
File P1 and PF can be unconnected each other files, as shown in Figure 4, may have a clearance G between the file before and after this moment, or can not have the gap, and be for example shown in Figure 5.When scan module scanned this gap G, the image that is obtained can be used as the foundation that paging is handled.
Again, file P1 and PF also can be the files that is connected with each other, such as the formed file of form paper of the employed computer of impact printer just has folding line.The front and back file of this moment does not just have clearance G, as shown in Figure 5.When scan module scanned this folding line, the image that is obtained also can be used as the foundation that paging is handled.
Fig. 7 shows the flow chart of the paging method of continuous sweep of the present invention.Please be simultaneously referring to Fig. 7 and Fig. 3-6, the paging method of continuous sweep of the present invention comprises following steps.
Step 70: beginning.
Step 71: present a plurality of file P1, PF one by one so that it is by scan line SL.Scan line SL is corresponding to the light path of file to optical sensor 11.
Step 72: the first file P1 in a plurality of files arrives before the scan line SL, begin to continue a plurality of images that acquisition can capture at scan line SL, definitive document PF in these files is fed fully by scan line SL and just stops later on, produces multipage analog signal S1 thus.Multipage analog signal S1 also sectional is output.
Step 73: multipage analog signal S1 is processed into multipage digital signal S2.Multipage digital signal S2 also sectional is produced.
Step 74: multipage digital signal S2 is carried out the image processing program to produce a plurality of single page digital signal S3 corresponding to these files.
Step 75: finish.
Fig. 8 shows the schematic diagram of a plurality of files of the paging method that is used for continuous sweep of the present invention.As shown in Figure 8, each file P1 and PF comprise leading edge E1, trailing edge E2, left border E3 and right border E4.
Fig. 9 shows the schematic diagram corresponding to the image of multipage digital signal S2 of the present invention.As shown in Figure 9, multipage digital signal S2 is made up of front end digital signal S4, single page digital signal S3 and rear end digital signal S5 in regular turn.So-called this front end digital signal S4 is corresponding to the image between the leading edge E1 that begins to be scanned up to this document P1, this rear end digital signal S5 corresponding to the rear end E2 of this document PF to the image between the end of scan.Represent each signal at this with several picture, those skilled in the art should understand the connotation of each signal representative easily.
Shown in Fig. 8 and 9, the image processing program comprises following steps.At first, correspond respectively to the leading edge E1 of each file and leading edge cutting wires L1 and the trailing edge cutting wires L2 of trailing edge E2 among the searching multipage digital signal S2.Then, according to leading edge cutting wires L1 and trailing edge cutting wires L2 multipage digital signal S2 is carried out forming these single page digital signals S3 corresponding to the conversion of image cutting process.With respect to the meaning of several picture, exactly that front and back are unnecessary part is cropped, and then two pages image is separated.Under the definite situation of scanning width and antiquarian (for example known is the A4 size), can seek trailing edge/leading edge or directly produce the single page digital signal according to leading edge/trailing edge.In this example, as long as seek the leading edge cutting wires/trailing edge cutting wires that corresponds respectively to the leading edge/trailing edge of each file in the multipage digital signal, according to leading edge cutting wires/trailing edge cutting wires and corresponding to the document size signal of the size of each file, the multipage digital signal is carried out forming these single page digital signals corresponding to the conversion of image cutting process then.
Figure 10 shows the schematic diagram corresponding to the image of a plurality of single page digital signal S3 of the present invention.As shown in figure 10, through after the aforementioned conversion, can produce single page digital signal S3.
Several examples of the paging method of Figure 11 to 15 display application continuous sweep of the present invention.As shown in figure 11, wherein multipage digital signal S2 is made up of front end digital signal S4, interconnected single page digital signal S3, one or more gap digit signal S6 and rear end digital signal S5 in regular turn.Gap digit signal S6 is corresponding to the image between this document P1 and this document PF, and its number is lacked one than single page digital signal S3.In the case, aforementioned image processing program comprises following steps.At first, correspond respectively to the leading edge E1 of each file and leading edge cutting wires L1 and the trailing edge cutting wires L2 of trailing edge E2 among the searching multipage digital signal S2.Then, according to leading edge cutting wires L1 and trailing edge cutting wires L2 multipage digital signal S2 is carried out forming these single page digital signals S3 corresponding to the conversion of image cutting process.With respect to the meaning of several picture, exactly front and back and middle unnecessary part are cropped, thus with two pages separation of images.Under the definite situation of scanning width and antiquarian (for example known is the A4 size), can seek trailing edge/leading edge or directly produce the single page digital signal according to leading edge/trailing edge, as previously mentioned.
As shown in figure 12, this is the result who is obtained under the state of width greater than the width of each file of each image.Multipage digital signal S2 is made up of front end digital signal S4, single page digital signal S3, a plurality of border digital signal S7 and rear end digital signal S5 in regular turn.Lay respectively at left and right sides corresponding to a plurality of borders image of these borders digital signal S7 corresponding to a plurality of document images of these files.In the case, aforementioned image processing program comprises: seek the leading edge cutting wires L1, trailing edge cutting wires L2, left border cutting wires L3 and the right border cutting wires L4 that correspond respectively to each document leading edge E1, trailing edge E2, left border E3 and right border E4 among the multipage digital signal S2; And multipage digital signal S2 is carried out forming single page digital signal S3 corresponding to the conversion of image cutting program according to leading edge cutting wires L1, trailing edge cutting wires L2, left border cutting wires L3 and right border cutting wires L4.With respect to the meaning of several picture, exactly will be all around unnecessary part crop, then with two pages separation of images.
As shown in figure 13, this is the result who is obtained under the state of width greater than the width of each file of each image.Because paper feeding scanner is equipped with the paper width limiter usually, thus can limit the angle of paper sheet askew by the width of paper, and make the crooked amount of each paper not have the situation that adds up.In the case, aforementioned image processing program comprises following steps.At first, seek leading edge cutting wires L1, trailing edge cutting wires L2, left border cutting wires L3 and the right border cutting wires L4 that corresponds respectively to leading edge E1, trailing edge E2, left border E3 and the right border E4 of each file among the multipage digital signal S2.Then, according to leading edge cutting wires L1, trailing edge cutting wires L2, left border cutting wires L3 and right border cutting wires L4 multipage digital signal S2 is carried out forming these single page digital signals S3 corresponding to the conversion of image cutting program and image rotation program.With respect to the meaning of several picture, exactly that front and back are unnecessary part is cropped, and image rotating is followed the separation of images with two pages then.Under the situation of scanning known file size (for example being known as the A4 size), can by adjacent two edges (such as leading edge and left border) push away two other edge (such as trailing edge and right border) or directly processing produces desired single page digital signal.In this example, at first seek the leading edge/trailing edge that corresponds respectively to each file in the multipage digital signal and the leading edge cutting wires/trailing edge cutting wires and the left border cutting wires/right border cutting wires of left border/right border.Then, according to leading edge cutting wires/trailing edge cutting wires, left border cutting wires/right border cutting wires and corresponding to the document size signal of the size of each file, the multipage digital signal is carried out forming these single page digital signals corresponding to the conversion of image cutting program.
As shown in figure 14, multipage digital signal S2 is made up of front end digital signal S4, single page digital signal S3, one or more gap digit signal S6, a plurality of border digital signal S7 and rear end digital signal S5 in regular turn.Lay respectively at left and right sides corresponding to a plurality of borders image of these borders digital signal S7 corresponding to a plurality of document images of these files.Aforementioned image processing program comprises following steps.At first, seek among the multipage digital signal S2 leading edge cutting wires L1, trailing edge cutting wires L2, left border cutting wires L3 and right border cutting wires L4 corresponding to leading edge E1, trailing edge E2, left border E3 and the right border E4 of each file.Then, according to leading edge cutting wires L1, trailing edge cutting wires L2, left border cutting wires L3 and right border cutting wires L4 multipage digital signal S2 is carried out forming single page digital signal S3 corresponding to the conversion of image cutting program.With respect to the meaning of several picture, the unnecessary part that will reach the stage casing exactly all around crops, thus with two pages separation of images.Under the situation of scanning known file size (for example being known as the A4 size), can by adjacent two edges (such as leading edge and left border) push away two other edge (such as trailing edge and right border) or directly handle and produce desired single page digital signal, as previously mentioned.
As shown in figure 15, the place that this example is different from Figure 14 is crooked situation, so the paging processing just comprises the selected of crooked correction and border.Therefore, wherein image processing program comprises following steps.At first, seek among the multipage digital signal S2 leading edge cutting wires L1, trailing edge cutting wires L2, left border cutting wires L3 and right border cutting wires L4 corresponding to leading edge E1, trailing edge E2, left border E3 and the right border E4 of each file.Then, according to leading edge cutting wires L1, trailing edge cutting wires L2, left border cutting wires L3 and right border cutting wires L4 multipage digital signal S2 is carried out forming these single page digital signals S3 corresponding to the conversion of image rotation program and image cutting program.With respect to the meaning of several picture, the unnecessary part that will reach the stage casing exactly all around crops, then image rotating and with two pages separation of images.Under the situation of scanning known file size (for example being known as the A4 size), can by adjacent two edges (such as leading edge and left border) push away two other edge (such as trailing edge and right border) or directly processing produces desired single page digital signal.In this example, at first seek in the multipage digital signal corresponding to the leading edge/trailing edge of each file and the leading edge cutting wires/trailing edge cutting wires and the left border cutting wires/right border cutting wires of left border/right border.Then, according to leading edge cutting wires/trailing edge cutting wires, left border cutting wires/right border cutting wires and corresponding to the document size signal of the size of each file, the multipage digital signal is carried out forming these single page digital signals corresponding to the conversion of image cutting program.
By paging method of the present invention, can avoid document leading edge to detect the problem that coarse phenomenon causes scanning result to omit to some extent, also the scanning result that can avoid document skew the to cause shortcoming of omitting to some extent.
The specific embodiment that is proposed in the detailed description of preferred embodiment is only in order to convenient explanation technology contents of the present invention, but not with narrow sense of the present invention be limited to the foregoing description, in the situation that does not exceed spirit of the present invention and claim, the many variations of being done is implemented, and all belongs to scope of the present invention.
The primary clustering symbol description
E1～leading edge
E2～trailing edge
E3～left border
E4～right border
G～gap
L1～leading edge cutting wires
L2～trailing edge cutting wires
L3～left border cutting wires
L4～right border cutting wires
P1～first file
PF～definitive document
S1～multipage analog signal
S2～multipage digital signal
S3～single page digital signal
S4～front end digital signal
S5～rear end digital signal
S6～gap digit signal
S7～border digital signal
SL～scan line
10～scan module
11～optical sensor
12～front-end processing circuit
20～paper feed mechanism
30～file detector
40～microprocessor
70-75: method step
100～file
101～leading edge
102～trailing edge
110,120,130,140～corner
200～sweep limits
Claims (17)
1. the paging method of a continuous sweep is characterized in that, comprises following steps:
Present a plurality of files one by one so that it passes through scan line;
Wherein each this document comprises leading edge, trailing edge, left border and right border;
First file in these a plurality of files arrives before this scan line, begin to continue a plurality of images that acquisition can capture at this scan line, definitive document in these files is fed fully by this scan line and just stops later on, produces the multipage analog signal thus;
This multipage analog is become the multipage digital signal; And
According to leading edge, trailing edge, left border and the right border of each this document this multipage digital signal is carried out the image processing program to produce a plurality of single page digital signals corresponding to these files.
2. the paging method of continuous sweep as claimed in claim 1 is characterized in that, wherein this multipage digital signal is made up of front end digital signal, single page digital signal and rear end digital signal in regular turn;
Wherein this front end digital signal is corresponding to the image between the leading edge that begins to be scanned up to this first file, this rear end digital signal corresponding to the trailing edge of this definitive document to the image between the end of scan.
3. the paging method of continuous sweep as claimed in claim 2 is characterized in that, wherein this image processing program comprises:
Seek the leading edge that corresponds respectively to each this document in this multipage digital signal and the leading edge cutting wires and the trailing edge cutting wires of trailing edge; And
According to this leading edge cutting wires and this trailing edge cutting wires this multipage digital signal is carried out forming the single page digital signal corresponding to the conversion of image cutting process.
4. the paging method of continuous sweep as claimed in claim 2 is characterized in that, wherein this image processing program comprises:
Seek the leading edge cutting wires/trailing edge cutting wires of the leading edge/trailing edge that corresponds respectively to each this document in this multipage digital signal; And
According to this leading edge cutting wires/trailing edge cutting wires and corresponding to the document size signal of the size of each this document, this multipage digital signal is carried out forming the single page digital signal corresponding to the conversion of image cutting process.
5. the paging method of continuous sweep as claimed in claim 1 is characterized in that, wherein this multipage digital signal is made up of front end digital signal, interconnected single page digital signal and gap digit signal and rear end digital signal.
Wherein this front end digital signal is corresponding to the image between the leading edge that begins to be scanned up to this first file, and this gap digit signal is corresponding to the image between each this document, this rear end digital signal corresponding to the trailing edge of this definitive document to the image between the end of scan.
6. the paging method of continuous sweep as claimed in claim 5 is characterized in that, wherein this image processing program comprises:
Seek the leading edge that corresponds respectively to each this document in this multipage digital signal and the leading edge cutting wires and the trailing edge cutting wires of trailing edge; And
According to this leading edge cutting wires and this trailing edge cutting wires this multipage digital signal is carried out forming the single page digital signal corresponding to the conversion of image cutting process.
7. continuous sweep paging method as claimed in claim 5 is characterized in that, wherein this image processing program comprises:
Seek the leading edge cutting wires/trailing edge cutting wires of the leading edge/trailing edge that corresponds respectively to each this document in this multipage digital signal; And
According to this leading edge cutting wires/trailing edge cutting wires and corresponding to the document size signal of the size of each this document, this multipage digital signal is carried out forming the single page digital signal corresponding to the conversion of image cutting process.
8. the paging method of continuous sweep as claimed in claim 1 is characterized in that, wherein respectively the width of this image greater than the width of this document.
9. the paging method of continuous sweep as claimed in claim 8 is characterized in that, wherein this multipage digital signal is made up of front end digital signal, single page digital signal, a plurality of borders digital signal and rear end digital signal;
Wherein this front end digital signal is corresponding to the image between the leading edge that begins to be scanned up to this first file, this a plurality of borders digital signal is corresponding to the image in the left side of each this document and corresponding to the image on the right side of each this document, this rear end digital signal corresponding to the trailing edge of this definitive document to the image between the end of scan.
10. the paging method of continuous sweep as claimed in claim 9 is characterized in that, wherein this image processing program comprises:
Seek the leading edge cutting wires, trailing edge cutting wires, left border cutting wires and the right border cutting wires that correspond respectively to leading edge, trailing edge, left border and the right border of each this document in this multipage digital signal; And
According to this leading edge cutting wires, this trailing edge cutting wires, this left border cutting wires and this right border cutting wires this multipage digital signal is carried out forming the single page digital signal corresponding to the conversion of image cutting program.
11. the paging method of continuous sweep as claimed in claim 9 is characterized in that, wherein this image processing program comprises:
Seek the leading edge cutting wires, trailing edge cutting wires, left border cutting wires and the right border cutting wires that correspond respectively to leading edge, trailing edge, left border and the right border of each this document in this multipage digital signal; And
According to this leading edge cutting wires, this trailing edge cutting wires, this left border cutting wires and this right border cutting wires this multipage digital signal is carried out forming the single page digital signal corresponding to the conversion of image cutting program and image rotation program.
12. the paging method of continuous sweep as claimed in claim 9 is characterized in that, wherein this image processing program comprises:
Seek the leading edge/trailing edge that corresponds respectively to each this document in this multipage digital signal and the leading edge cutting wires/trailing edge cutting wires and the left border cutting wires/right border cutting wires of left border/right border; And
According to this leading edge cutting wires/trailing edge cutting wires, this left border cutting wires/right border cutting wires and corresponding to the document size signal of the size of each this document, this multipage digital signal is carried out forming the single page digital signal corresponding to the conversion of image cutting program.
13. the paging method of continuous sweep as claimed in claim 8, it is characterized in that wherein this multipage digital signal is made up of front end digital signal, single page digital signal, one or more gap digit signal, a plurality of borders digital signal and rear end digital signal;
Wherein this front end digital signal is corresponding to the image between the leading edge that begins to be scanned up to this first file, this gap digit signal is corresponding to the image between each this document, this a plurality of borders digital signal is corresponding to the image in the left side of each this document and corresponding to the image on the right side of each this document, this rear end digital signal corresponding to the trailing edge of this definitive document to the image between the end of scan.
14. the paging method as claim 13 continuous sweep is characterized in that, wherein this image processing program comprises:
Seek in this multipage digital signal leading edge cutting wires, trailing edge cutting wires, left border cutting wires and right border cutting wires corresponding to leading edge, trailing edge, left border and the right border of each this document; And
According to this leading edge cutting wires, this trailing edge cutting wires, this left border cutting wires and this right border cutting wires this multipage digital signal is carried out forming the single page digital signal corresponding to the conversion of image cutting program.
15. the paging method as continuous sweep as described in the claim 13 is characterized in that wherein this image processing program comprises:
Seek in this multipage digital signal leading edge cutting wires, trailing edge cutting wires, left border cutting wires and right border cutting wires corresponding to leading edge, trailing edge, left border and the right border of each this document; And
According to this leading edge cutting wires, this trailing edge cutting wires, this left border cutting wires and this right border cutting wires this multipage digital signal is carried out forming the single page digital signal corresponding to the conversion of image rotation program and image cutting program.
16. the paging method of continuous sweep as claimed in claim 13 is characterized in that, wherein this image processing program comprises:
Seek in this multipage digital signal corresponding to the leading edge/trailing edge of each this document and the leading edge cutting wires/trailing edge cutting wires and the left border cutting wires/right border cutting wires of left border/right border; And
According to this leading edge cutting wires/trailing edge cutting wires, this left border cutting wires/right border cutting wires and corresponding to the document size signal of the size of each this document, this multipage digital signal is carried out forming the single page digital signal corresponding to the conversion of image cutting program.
17. the paging method of continuous sweep as claimed in claim 13 is characterized in that, wherein this image processing program comprises:
Seek in this multipage digital signal corresponding to the leading edge/trailing edge of each this document and the leading edge cutting wires/trailing edge cutting wires and the left border cutting wires/right border cutting wires of left border/right border; And
According to this leading edge cutting wires/trailing edge cutting wires, this left border cutting wires/right border cutting wires and corresponding to the document size signal of the size of each this document, this multipage digital signal is carried out forming the single page digital signal corresponding to the conversion of image rotation program and image cutting program.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000039803A (en) * | 1998-07-24 | 2000-02-08 | Toshiba Corp | Image forming device |
| EP1077571A2 (en) * | 1999-08-19 | 2001-02-21 | Ricoh Company | Image forming apparatus and image processing apparatus including the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000039803A (en) * | 1998-07-24 | 2000-02-08 | Toshiba Corp | Image forming device |
| EP1077571A2 (en) * | 1999-08-19 | 2001-02-21 | Ricoh Company | Image forming apparatus and image processing apparatus including the same |
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