CN101398647B - Image forming apparatus - Google Patents
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- CN101398647B CN101398647B CN2008101668132A CN200810166813A CN101398647B CN 101398647 B CN101398647 B CN 101398647B CN 2008101668132 A CN2008101668132 A CN 2008101668132A CN 200810166813 A CN200810166813 A CN 200810166813A CN 101398647 B CN101398647 B CN 101398647B
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Abstract
An image forming apparatus includes: a common conveyance path through which a sheet fed from a sheet feed tray is conveyed from a registration roller to a transfer section; a direct conveyance path through which the sheet is directly fed from the sheet feed tray to the common conveyance path; a delay conveyance path in which the sheet after being branched from the direct conveyance path is joined to the common conveyance path, and is caused to delay in being fed from the sheet feed tray to the common sheet conveyance path; a conveyance section which conveys the sheet fed from the sheet feed tray to the transfer section; and a controller which controls the conveyance section to convey once the sheet fed from the sheet feed tray from the direct conveyance path to the delay conveyance path, and thereafter to convey to the common conveyance path.
Description
Technical field
The present invention relates to a kind of imaging device, wherein supply with and on this paper, form image being stacked on paper on the paper supply tray.
Background technology
Imaging device as duplicating machine, Printers and Faxes machine is introduced in many offices, and the customer requirements imaging device has higher speed and the picture quality of Geng Gao.In recent years, electrophotographic image forming also was introduced into the printing industry, and higher speed of customer requirements and the picture quality of Geng Gao.
As realizing the more technology of high image quality; In a kind of technology; For example, the physical characteristics that detect every the paper that is supplied by paper supply tray comprises for example width and whiteness, or such as the position of deviation; With the correction image data, thereby image is formed on the paper based on corrected view data.
Openly apply in the described technology of No.2005-41582 at unexamined Jap.P.; For example; The transport path of paper is provided with the paper deviation sensor; Then, view data is shifted so that sensor-based testing result is revised along main scanning direction on storer, thereby on paper, forms image based on corrected view data.This technology makes to be considered the deviation of every paper and becomes possibility at formation high quality graphic on the fixed position of paper edge all the time thus.
For physical characteristics and position through every paper considering to be provided by paper supply tray form image; For example; Just need to rely on the detecting sensor 3000 that is installed on the transport path 2000 shown in Figure 10 to detect the paper that provides by paper supply tray 1000, then according to the data of correction image as a result that detect.In addition, when carrying out the view data correction and realizing higher speed, need come from paper supply tray 1000 continuous paper supplies, and detect the physical characteristics and the position of every paper with detecting sensor 3000 through the delivery interval that shortens paper.
Because from detecting sensor 3000 detect every paper physical characteristics etc. the time be carved into the moment that the image that is formed on after the view data correction on the photoreceptor 4000A arrives transfer section 5000 and need certain duration; This just need detect physical characteristics of paper etc. ahead of time; Thereby the result according to detecting forms image successively on photoreceptor 4000A, thereby on the paper of supplying with continuously with short interval, forms image.
When considering this; Just need arrange detecting sensor 3000 at the upstream side of transport path 2000; And make that the transport-route length between detecting sensor 3000 and the transfer section 5000 is long as much as possible, so that plurality of sheets of paper can rest between detecting sensor 3000 and the transfer section 5000.By this way, can detect the physical characteristics of paper ahead of time, thereby can realize higher speed.
Yet if make that the transport path between detecting sensor 3000 and the transfer section 5000 is longer along straight line, equipment just needs very big size.In addition, if the transport path between detecting sensor 3000 and the transfer section 5000 be turn to and become longer excessive to prevent equipment size, when in knuckle section generation paperboard, remove so by paperboard and just open very difficulty.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of imaging device of compactness, the physical characteristics of every paper wherein being supplied with or position are all to be detected, and at full speed form images based on testing result.
To achieve these goals, the imaging device that on paper, forms image involved in the present invention has following structure, and in this structure, be provided with: paper is supplied with part, and this part has the pallet that loads paper; Paper detection, said paper detection detect physical characteristics or the position of being supplied with every paper of part supply by said paper; Imaging moiety, said imaging moiety forms image based on the testing result of said paper detection; Transfer section, said transfer section is transferred to the image that said imaging moiety forms on the paper; Public transport path, the paper of supplying with the part supply from said paper is transported to said transfer section through said public transport path from alignment rolls; Direct transport path, paper is supplied with part through said direct transport path from said paper and is directly supplied to said public transport path; Postpone transport path, said delay transport path is joining with said public transport path from said direct transport path fork back, and paper is postponed when part supplies to said public transport path supplying with from said paper; Transport portion, said transport portion will be supplied with paper sheet delivery that part supplies with to said transfer section from said paper; And controller, said controller is controlled said transport portion.Thereby said controller is controlled said transport portion and is supplied with the paper that part supplies with by said paper and temporarily be transported to said delay transport path from said direct transport path, thereafter with paper sheet delivery to said public transport path.
According to an aspect of the present invention, a kind of imaging device that on paper, forms image is provided, has comprised: (a) paper supply tray, paper sheet stacking is on said paper supply tray; (b) paper detection, said paper detection detects the physical characteristics or the position of every paper being supplied with by said paper supply tray; (c) imaging moiety, said imaging moiety forms image based on the testing result of said paper detection; (d) transfer section, said transfer section is transferred to the image that said imaging moiety forms on the paper; (e) public transport path, the paper of supplying with from said paper supply tray is transported to said transfer section through said public transport path from alignment rolls; (f) direct transport path, paper directly supplies to said public transport path through said direct transport path from said paper supply tray; (g) postpone transport path, in said delay transport path, paper is joining with said public transport path from said direct transport path fork back, and paper is postponed when supplying to said public transport path from said paper supply tray; (h) transport portion, the paper sheet delivery that said transport portion will be supplied with from said paper supply tray is to said transfer section; (i) controller; Thereby controlling said transport portion, said controller will be transported to said delay transport path from said direct transport path earlier by the paper that said paper supply tray is supplied with; Paper sheet delivery arrived said public transport path thereafter; Wherein during the main body paper supply tray in said paper supply tray is arranged on the main body of said imaging device; Said direct transport path is corresponding to the body delivery path; In said body delivery path, paper directly supplies to said public transport path from said main body paper supply tray, and said delay transport path supplies to the optional transport path of said public transport path from the optional paper supply tray that is connected with the main body of said imaging device corresponding to paper.
According to another aspect of the present invention, a kind of imaging device that on paper, forms image is provided, has comprised: (a) paper supply tray, paper sheet stacking is on said paper supply tray; (b) paper detection, said paper detection detects the physical characteristics or the position of every paper being supplied with by said paper supply tray; (c) imaging moiety, said imaging moiety forms image based on the testing result of said paper detection; (d) transfer section, said transfer section is transferred to the image that said imaging moiety forms on the paper; (e) public transport path, the paper of supplying with from said paper supply tray is transported to said transfer section through said public transport path from alignment rolls; (f) direct transport path, paper directly supplies to said public transport path through said direct transport path from said paper supply tray; (g) postpone transport path, in said delay transport path, paper is joining with said public transport path from said direct transport path fork back, and paper is postponed when supplying to said public transport path from said paper supply tray; (h) transport portion, the paper sheet delivery that said transport portion will be supplied with from said paper supply tray is to said transfer section; (i) controller; Thereby controlling said transport portion, said controller will be transported to said delay transport path from said direct transport path earlier by the paper that said paper supply tray is supplied with; Paper sheet delivery arrived said public transport path thereafter; Wherein during the main body paper supply tray in said paper supply tray is arranged on the main body of said imaging device; Said direct transport path is corresponding to the body delivery path, and in said body delivery path, paper directly supplies to said public transport path from said main body paper supply tray; And said delay transport path is corresponding to the counter-rotating transport path, and the paper that said counter-rotating transport path makes the front side be formed with image is inverted.
According to a further aspect of the invention, a kind of imaging device that on paper, forms image is provided, has comprised: (a) paper supply tray, paper sheet stacking is on said paper supply tray; (b) paper detection, said paper detection detects the physical characteristics or the position of every paper being supplied with by said paper supply tray; (c) imaging moiety, said imaging moiety forms image based on the testing result of said paper detection; (d) transfer section, said transfer section is transferred to the image that said imaging moiety forms on the paper; (e) public transport path, the paper of supplying with from said paper supply tray is transported to said transfer section through said public transport path from alignment rolls; (f) direct transport path, paper directly supplies to said public transport path through said direct transport path from said paper supply tray; (g) postpone transport path, in said delay transport path, paper is joining with said public transport path from said direct transport path fork back, and paper is postponed when supplying to said public transport path from said paper supply tray; (h) transport portion, the paper sheet delivery that said transport portion will be supplied with from said paper supply tray is to said transfer section; (i) controller; Thereby controlling said transport portion, said controller will be transported to said delay transport path from said direct transport path earlier by the paper that said paper supply tray is supplied with; Paper sheet delivery arrived said public transport path thereafter; Wherein when said paper supply tray is with the main body of said imaging device is connected optional paper supply tray, said direct transport path is corresponding to optional transport path, in said optional transport path; Paper directly supplies to said public transport path from said optional paper supply tray; And said delay transport path is corresponding to the body delivery path, and in said body delivery path, paper supplies to said public transport path from the main body paper supply tray.
According to a further aspect of the present invention, a kind of imaging device that on paper, forms image is provided, has comprised: (a) paper supply tray, paper sheet stacking is on said paper supply tray; (b) paper detection, said paper detection detects the physical characteristics or the position of every paper being supplied with by said paper supply tray; (c) imaging moiety, said imaging moiety forms image based on the testing result of said paper detection; (d) transfer section, said transfer section is transferred to the image that said imaging moiety forms on the paper; (e) public transport path, the paper of supplying with from said paper supply tray is transported to said transfer section through said public transport path from alignment rolls; (f) direct transport path, paper directly supplies to said public transport path through said direct transport path from said paper supply tray; (g) postpone transport path, in said delay transport path, paper is joining with said public transport path from said direct transport path fork back, and paper is postponed when supplying to said public transport path from said paper supply tray; (h) transport portion, the paper sheet delivery that said transport portion will be supplied with from said paper supply tray is to said transfer section; (i) controller; Thereby controlling said transport portion, said controller will be transported to said delay transport path from said direct transport path earlier by the paper that said paper supply tray is supplied with; Paper sheet delivery arrived said public transport path thereafter; Wherein when said paper supply tray is with the main body of said imaging device is connected optional paper supply tray; Said direct transport path is corresponding to optional transport path, and in said optional transport path, paper directly supplies to said public transport path from said optional paper supply tray; And said delay transport path is corresponding to the counter-rotating transport path, and the paper that said counter-rotating transport path makes the front side be formed with image is inverted.
Description of drawings
Fig. 1 is the in-built central cross-section figure that shows imaging device.
Fig. 2 is the block diagram of the control system of imaging device.
Fig. 3 is the enlarged drawing of transport path in equipment body and the optional paper feed.
Fig. 4 is a process flow diagram, shows through switching transport path and carries the operation of the paper of seeing off from paper supply tray.
Fig. 5 shows the diagram that paper temporarily is transported to the configuration of optional transport path from the transport path of main body.
Fig. 6 shows the diagram that paper temporarily is transported to the configuration of counter-rotating transport path from the transport path of main body.
Fig. 7 is a process flow diagram, shows switching transport path and the conveying operation from the paper of optional paper supply tray supply.
Fig. 8 shows the diagram of configuration that paper temporarily is transported to the transport path of main body from optional transport path.
Fig. 9 shows the diagram that paper temporarily is transported to the configuration of counter-rotating transport path from optional transport path.
Figure 10 is the schematic diagram of common imaging device.
Embodiment
Fig. 1 shows the in-built central cross-section figure of imaging device 1.
The document that is placed on the document feed platform of automatic document feeder 10 relies on each conveying roller to be transported to image reading section 30.
The structure of main body paper supply tray 20 for pulling out towards the front side of equipment (in Fig. 1, being this side on the page).In a plurality of main body paper supply trays 20, the paper S such as the blank sheet of paper that stack are arranged, said paper is according to size classes.The paper S that is contained in the main body paper supply tray 20 is supplied with by paper feed roller 21.
Optional paper feed 3 is connected with the outside of equipment body 2.In optional paper feed 3, be provided with optional paper supply tray 210, all stack a large amount of paper S in each paper supply tray 210.When a large amount of paper of continuous printing, image is formed on the paper S thereby paper S is seen off optional paper supply tray 210.
Imaging moiety 40 has quadruplet image- generating unit 400Y, 400M, 400C and 400K, and they form the toner image of Y, M, C and each color of K respectively.Image-generating unit 400Y, 400M, 400C and 400K arrange downwards along straight line from the top in this order, and in them each all has identical construction.If will be used for the example of the image-generating unit 400Y of yellow color, have the photoreceptor 410, grid net live part (scorotron charging section) 420, exposed portion 430 and the development part 440 that are rotated counterclockwise among the image-generating unit 400Y as structure.
The intermediate transfer belt 50 that is positioned at the equipment body middle body is annular and specific insulation that have appointment.First transfer printing electrode 510 is installed in and passes the position of intermediate transfer belt 50 in the face of photoreceptor 410.
Next, with setting forth the image forming method that forms coloured image.
When the toner image that is formed respectively by image-generating unit 400Y, 400M, 400C and 400K is transferred on the intermediate transfer belt 50 and is applied, just on intermediate transfer belt 50, form coloured image.Paper S supplies with from main body paper supply tray 20 or from optional paper supply tray 210 one by one, and is transported to circle round roller 90 or alignment rolls 60.Paper S runs into alignment rolls 60 and is stoped by temporary transient, like this, form the loop by the roller 90 that circles round, thereby the crooked of paper S is repaired.In the moment that toner image on intermediate transfer belt 50 and picture position are synchronous, paper S supplies with from alignment rolls 60.
The paper S that is supplied with by alignment rolls 60 is directed to the plate guiding so that supply to the transfer printing nip position that is formed by intermediate transfer belt 50 and transfer section 70.Transfer section 70 by roller constitutes is pressed to intermediate transfer belt 50 with paper S.When polarity and the opposite polarity bias voltage of toner (for example ,+500V) be applied to 70 last times of transfer section, the toner image on the intermediate transfer belt 50 is transferred on the paper S through the effect of electrostatic force.Paper S by in the tripping device (not shown) neutralization that constitutes with pin so that separate from middle transfer belt 50, and be sent to photographic fixing part 80 with warm-up mill and backer roll.The result is that on paper S, the paper S that is formed with image then is ejected out to outside the equipment toner image by photographic fixing.
Subsidiary to say be; Imaging device 1 in this embodiment is the equipment that on paper, forms coloured image through electrophotographic system; But the imaging device relevant with the present invention is not limited to this embodiment, but it also can be for forming the imaging device of monochrome image.
Fig. 2 is the block diagram of the control system of imaging device 1, in this case, only shows typical part.
CPU (CPU) 101 is connected to ROM (ROM (read-only memory)) 102 and RAM (RAS) 103 through system bus 109.This CPU101 reads out the various programs that are stored among the ROM102 on RAM103, launching them, and the running of its each part of control.In addition, CPU101 accomplishes various types of processing procedures according to the program in RAM103, launched, and it is stored in process result among the RAM103, and they are presented on operation and the display part 105.Then, CPU101 will be stored in result among the RAM103 and be retained in the designated destination in order to preserve.Simultaneously, in this embodiment, CPU101 constitutes control section with ROM102 and RAM103.
ROM102 is stored routine and data in advance, and it typically is made up of semiconductor memory.
RAM103 forms the workspace, the interim handled data of being carried out by CPU101 of all kinds program that store in this workspace.
HDD104 has function and the function of the view data that stores output of the view data of the file and picture that storage read by image reading section 30.The structure of HDD104 does, wherein a plurality of metal dish stack at regular intervals, said a plurality of metal dish each all with magnetic material coating or vapor deposition, thereby approaching during by the HDD104 of motor high speed rotating when magnetic head, data just are read or write.
Operation and display part 105 can be various configurations.For example, the operation of touch-pad type and display part 105 when the user imports through operation and display part 105, are just set up about colour print or monochromatic situation about printing.Operation and display part 105 show the various types of information that comprise network setup information.
By image reading section 30 view data that generates and the Flame Image Process that receives from the personal computer image transmitted data that link to each other with imaging device 1 by image processing section 106 execution.When on imaging device 1, carrying out colour print; The view data that is respectively applied for R (red), G (green) and B (indigo plant) that is generated by image reading section 30 is transfused to the color conversion LUT (look-up table) in the image processing section 106, and R, G and B data become to be respectively applied for the view data of Y (Huang), M (magenta), C (green grass or young crops) and BK (deceiving) through color conversion then.Then,, revise the tone rendering characteristic for the view data after the color conversion, or, carry out that the screen that is referred to as density correction LUT is handled as shadow tone and be used for the edge treated of meticulous lines enhancing.
Main body paper sensor SS1 as paper detection is arranged in the body delivery path R1 that is used for from the paper S of main body paper supply tray 20 supplies, and detects displacement, width and the whiteness of every paper being carried.When main body paper sensor SS1 detects the displacement of paper S, image processing section 106 just according to the result who detects in the video memory upper edge main scanning direction displacement view data revise it.Therefore, on the appropriate location of paper, form image.
In addition; After the width of paper S is detected by main body paper sensor SS1; Image processing section 106 is with regard to the magnification of correction image data, and after the whiteness of paper S was detected by main body paper sensor SS1, image processing section 106 was with regard to the tone of correction image data.After the magnification of view data and tone are revised, just can on paper, form the image of high image quality.
The communication part 108 of equipment body is connected with the communication part 201 of optional paper feed, and the operation of optional paper feed 3 is by the controller control of equipment body 2.
Detecting displacement, width and the whiteness of every paper being carried with the identical mode of main body paper sensor SS1, and testing result is reflected in the correction of the view data that image processing section 106 carried out as the optional paper sensor SS2 of paper detection.
It is subsidiary that what will say is that in this embodiment, switching part G1, G2, G3 and G4 shown in body delivery part 107, optional transport portion 202 and Fig. 3 have constituted transport portion.
Fig. 3 is the amplification diagram of transport path in equipment body 2 and the optional paper feed 3.
R1 represents the body delivery path, and the paper S that supplies with from main body paper supply tray 20 passes through this delivery pathways, and this path is the transport path that covers from each main body paper supply tray 20 to the roller 90 that circles round.R2 represents optional transport path, and the paper S that supplies with from optional paper supply tray 210 passes through this delivery pathways, and this path is the transport path that covers from each optional paper supply tray 210 to the roller 90 that circles round.In addition, R3 representative counter-rotating transport path, its counter-rotating front side has formed the paper S of image, and this path is the transport path that covers from the bifurcation point in photographic fixing part 80 downstreams to the roller 90 that circles round.R4 represents public transport path, and the paper S that supplies with from each transport path passes through this delivery pathways to transfer section 70, and this path is to cover from the transport path of roller 90 to transfer section 70 that circle round.First of R5 representative R1 fork from the body delivery path connects transport path, and it arrives optional transport path R2 with paper sheet delivery.In addition, first connect transport path R5 through diverge from optional transport path R2 can with paper sheet delivery to the body delivery path R1.R6 represents second to connect transport path, and it is through diverging paper sheet delivery to counter-rotating transport path R3 from body delivery path R1 or from optional transport path R2.
SS1 represents the main body paper sensor, and it detects the displacement of the paper S that is carried by body delivery path R1.SS2 represents optional detecting sensor, and it detects the displacement of the paper S that is carried by optional transport path R2.Main body paper sensor SS1 is arranged on the upstream side of public transport path R4 along sheet transport direction.Equally, optional paper sensor SS2 is arranged on the upstream side of public transport path R4 along sheet transport direction.
On transport path, a plurality of switching part G1, G2, G3 and G4 are installed, can switch the transport path of paper S through them.Switching part G1 switches so that the paper S that R1 carries from the body delivery path can be transported to optional transport path R2 or be transported to public transport path R4.Switching part G2 switches so that the paper S that carries from optional transport path R2 can be transported to body delivery path R1 or be transported to public transport path R4.Switching part G3 switches so that the paper S that carries from body delivery path R1 or optional transport path R2 can be transported to counter-rotating transport path R3 or be transported to public transport path R4.
When realizing improving speed when the displacement through detecting every paper supplying with from paper supply tray etc. with through the correction image data; Need through shortening delivery interval, and need connect the displacement etc. that a ground detects every paper with one of paper detection from the continuous paper supply of paper supply tray.
Owing to detected by paper detection and view data is formed on image on the photoreceptor 410 and arrives transfer section 70 and need regular time to measure the correction after in the displacement of paper S etc.; Therefore need stage in early days to detect the displacement etc. of paper S, and on photoreceptor 410, form image in order according to the result who detects.
When considering aforementioned content, the fed distance between paper detection and the transfer section 70 will be grown, so that a plurality of paper S can rest in the space between paper detection and the transfer section so that postpone.Owing to above mentioned reason, transport path is switched by switching part G1, G2, G3 and G4, thereby can make the fed distance control growth distance between paper detection and the transfer section 70.
The aforementioned conveying control that is used to postpone paper can be carried out specific print job.Specific print job is such print job, has promptly set up high quality mode in the information and has not set up low-speed mode setting up of print job.High quality mode is a kind of like this pattern, that is, displacement, width and the whiteness of wherein being seen off the paper S of paper supply tray are read; Then; View data is revised and image is formed on the paper S, and like this, the assigned address on the basis of high image quality and on paper has been carried out printing.In low-speed mode, paper is carried avoiding trouble with low speed, because be easy to cause paperboard by the situation of transport path during for ground paper as paper S.In addition, some user allows with the low speed output paper, as long as the print quality height of paper.
These main points are making an explanation below with reference to Fig. 4.
Fig. 4 is a process flow diagram, shows the operation of carrying through the transport path that switches the paper S that sees off from main body paper supply tray 20.
At first, start the operation be based upon imaging device 1 and the print job in the display part 105 and move (step S1) from the print job of the PC reception of represent exterior terminal etc.
Next, according to the information of setting up of print job, judge whether the information of setting up of print job is high quality mode (step S2).
When judging that in step S2 print job is not high quality mode (step S2 is " deny "), be carried out to picture and need not the main consuming body paper sensor SS1 detection paper, because quality is unimportant in the print job.Especially; For the print job that is not high quality mode, that is, print job is not specific print job; Paper S supplies with (step S3) from main body paper supply tray 20; Then, paper S is delivered directly to public transport path R4 and paper S is not transported to delay transport path (step S4), and then toner image is transferred to paper S through transfer section 70 and goes up (step S5).In the explanation that utilizes Fig. 4; Paper S supplies with from main body paper supply tray 20; And paper S is delivered directly to public transport path R4 so that be transported to transfer section 70, and is not transported to optional transport path R2 and counter-rotating transport path R3 that representative postpones transport path.Operation from step S3 to S5 repeats to accomplish until print job.
On the other hand, when when step S2 judges that the information of setting up of print job is high quality mode (step S2 is " being "), next judge according to the information of foundation whether print job is low-speed mode (step S7).Judge in step S7 whether print job is low-speed mode in step S7, and the switching of control transport path.
When judging that in step S7 print job is not low-speed mode (step S7 is " deny "), through consider carry detect by main body paper sensor SS1 early stage plurality of sheets of paper with obtain as displacement information and revised and be formed on the image arrival transfer section 70 on the photoreceptor 410 through the consideration view data during duration come conveyance of sheets S.Particularly, paper S supplies with (step S8) from main body paper supply tray 20, and the paper S that supplies with like this detects (step S9) by main body paper sensor SS1.Then, longer for guaranteeing fed distance, paper S temporarily is transported to the delay transport path, and more then, paper S is transported to public transport path R4 (step S10), thereby toner image is through transfer section 70 transfer printings (step S11) on paper S.Operation from step S8 to step S11 will be below with reference to figure 5 and Fig. 6 illustrated in detail.
Fig. 5 shows paper S how temporary transient R1 is transported to the diagram of optional transport path R2 from the body delivery path.Fig. 6 shows paper S how temporary transient R1 is transported to the diagram of optional transport path R2 from the body delivery path.Fig. 6 shows paper S how temporary transient R1 is transported to the diagram of counter-rotating transport path R3 from the body delivery path.It is subsidiary that what will say is that in Fig. 5, body delivery path R1 is directly corresponding to transport path, and optional transport path R2 is corresponding to postponing transport path.In Fig. 6, body delivery path R1 is directly corresponding to transport path, and counter-rotating transport path R3 is corresponding to postponing transport path.
At first, in the explanation of embodiment shown in Figure 5, the paper S that supplies with from main body paper supply tray 20 advances through body delivery path R1 along direction a being detected by main body paper sensor SS1 after displacement waits.Then, the operation through switching part G1 advances paper S along direction b to connect transport path R5 through first, and temporarily is transported to the optional transport path R2 that representative postpones transport path.Then, paper S advances along direction c along the route of turning back, thereby is transported to transfer section 70 through public transport path R4.If the transport path between main body paper sensor SS1 and the transfer section 70 can temporarily guarantee enough length; Make paper S to carry through switching transport path through optional transport path R2; Just possibly supply with paper S continuously from main body paper supply tray 20 through shortening delivery interval, the stage obtains the information such as each displacement of opening in the plurality of sheets of paper in early days thus.Paper S is rested on the transport path, and make the certain duration of its transportation lag thus, this duration is the duration during the image arrival transfer section 70 on the photoreceptor 410 is revised and be formed on to view data.
Then, in the explanation about embodiment shown in Fig. 6, the paper S that supplies with from main body paper supply tray 20 is detected displacement by main body paper sensor SS1, and advances along direction d and to pass body delivery path R1.Then, because the operation of switching part G1 and G3, paper S connects transport path R6 along direction e from second and advances, thereby temporarily is transported to the counter-rotating transport path R3 of representative delay transport path.Then, paper S advances along direction f along the route of turning back, thereby is transported to transfer section 70 through public transport path R4.If the transport path between main body paper sensor SS1 and the transfer section 70 is temporarily guaranteed enough length; Then through paper S being transported to counter-rotating transport path R3; Just possibly come to supply with paper S continuously from main body paper supply tray 20 through shortening delivery interval, the stage obtains the information like each displacement of opening in the plurality of sheets of paper in early days thus.Paper S is rested on the transport path, and make the certain duration of its transportation lag thus, this duration is the duration during the image arrival transfer section 70 on the photoreceptor 410 is revised and be formed on to view data.
Through implementing the action of step S8-S11 shown in above-mentioned Fig. 4, just can detect the displacement of every paper being supplied with etc., thus, testing result is reflected in imaging goes up also imaging at full speed.
To continue explanation through getting back to Fig. 4.When judgment model is low-speed mode in step S7 (step S7 is " being "); Paper S does not shorten delivery interval (step S13) from 20 supplies of main body paper supply tray; Because this print job is the unessential print job of speed; Or the thicker print job of paper, and by main body paper sensor SS1 enforcement detection (step S14).Then, paper S is delivered directly to public transport path R4 and is not transported to delay transport path (step S15), goes up (step S16) thereby through transfer section 70 toner image is transferred to paper S.In explanation with reference to figure 4; For the print job except that particular print; Paper S supplies with from main body paper supply tray 20; And from the body delivery path R1 is delivered directly to public transport path R4 so that be transported to transfer section 70, rather than be transported to the optional transport path R2 and counter-rotating transport path R3 that representative postpones transport path.The operation of repeating step S13-S16 is accomplished until print job.
The operation that main body paper supply tray 20 in the slave unit main body 2 is supplied with paper S is explained in the above.Next, the operation of optional paper supply tray 210 supply paper S from optional paper feed 3 will be described.
Fig. 7 is a process flow diagram, shows switching transport path and the conveying operation from the paper of optional paper supply tray 210 supplies.
At first, start the print job (step S21) that is based upon operation and the print job on the display part 105 in the imaging device 1 and is received from the PC of exterior terminal.
Then, judge based on the information of setting up of print job whether this print job is high quality mode (step S22).
When judging that in step S22 print job is not high quality mode (step S22 is " deny "), be carried out to picture and need not to use optional paper sensor SS2 detection paper, because this print job is the unessential print job of picture quality.Particularly; For the print job that is not high quality mode; I.e. print job except particular print; Paper S supplies with (step S23) from optional paper supply tray 210, and paper S is delivered directly to public transport path R4 and paper S is not transported to delay transport path (step S24) then, and then through transfer section 70 toner image is transferred to paper S upward (step S25).In the explanation that utilizes Fig. 8, paper S supplies with from optional paper supply tray 210, and paper S is delivered directly to public transport path R4 so that be transported to transfer section 70, and is not transported to body delivery path R1 and counter-rotating transport path R3 that representative postpones transport path.The operation that repeats from step S23 to step 25 is accomplished until print job.
On the other hand, (step S22 is " being ") then judges according to the information of foundation whether print job is low-speed mode (step S27) when the information of setting up of in step S22, judging print job is high quality mode.
When step S27 judges that print job is not low-speed mode (step S27 is " denying "); Through considering that stage in early days detects plurality of sheets of paper S to obtain as the information of displacement and consider that view data revised and be formed on the duration during image on the photoreceptor 410 arrives transfer section 70 by optional paper sensor SS2; After switching transport path, conveyance of sheets S.Particularly, paper S supplies with (step S28) from optional paper supply tray 210, and the paper S that supplies with is like this detected (step S29) by optional paper sensor SS2.Then, enough long for guaranteeing fed distance, paper S temporarily is transported to the delay transport path, and more then, paper S is transported to public transport path R4 (step S30), then through transfer section 70 toner image is transferred to paper S and goes up (step S31).Operation from step S28 to step S31 will specify with reference to figure 8 and Fig. 9 below.
Fig. 8 shows how paper S temporarily is transported to the diagram of body delivery path R1 from optional transport path R2, and Fig. 9 shows how paper S temporarily is transported to the diagram of counter-rotating transport path R3 from optional transport path R2.Fig. 6 shows paper S how temporary transient R1 is transported to the diagram of counter-rotating transport path R3 from the body delivery path.It is subsidiary that what mention is that in Fig. 8, optional transport path R2 is directly corresponding to transport path, and body delivery path R1 is corresponding to postponing transport path.In Fig. 9, optional transport path R2 is directly corresponding to transport path, and counter-rotating transport path R3 is corresponding to postponing transport path.
At first, in the explanation of embodiment shown in Figure 8, the paper S that supplies with from optional paper supply tray 210 advances through optional transport path R2 along direction g after being detected displacement etc. by optional paper sensor SS2.Then, the operation through switching part G2 and G1 makes paper S advance along direction h to be connected transport path R5 through first, and is transported to the body delivery path R1 that representative postpones transport path.Then, paper S advances along direction i along the route of turning back, so that be transported to public transport path R4.If the transport path between optional paper sensor SS2 and the transfer section 70 is temporarily guaranteed enough length; Then make paper S to carry through body delivery path R1 through switching transport path; Just possibly supply with paper S continuously from optional paper supply tray 210, and the stage obtains the information like each displacement of opening in the plurality of sheets of paper in early days thus through shortening delivery interval.Paper S is rested on the transport path, and make its transportation lag certain time length thus, this duration is the duration during the image arrival transfer section 70 on the photoreceptor 410 is revised and be formed on to view data.
Next, in the explanation about embodiment shown in Figure 9, the paper S that supplies with from optional paper supply tray 210 is detected displacement by optional paper sensor SS2, and advances through optional transport path R2 along direction j.Then, because the operation of switching part G2 and G3, paper S advances through the second connection transport path R6 along direction k, and is transported to the counter-rotating transport path R3 that representative postpones transport path.Then, paper S advances along direction l along the route of turning back, and is transported to transfer section 70 through public transport path R4.If the transport path between optional paper sensor SS2 and the transfer section 70 is temporarily guaranteed enough length; Then make paper S to carry through counter-rotating transport path R3 through switching transport path; Just possibly supply with paper S continuously from optional paper supply tray 210, and the stage obtains the information like each displacement of opening in the plurality of sheets of paper in early days thus through shortening delivery interval.Paper S is rested on the transport path, and make its transportation lag certain time length thus, this duration is the duration during the image arrival transfer section 70 on the photoreceptor 410 is revised and be formed on to view data.
Action through step S28 to S31 shown in Fig. 7 of explanation above implementing just can detect the displacement of every paper being supplied with etc., thus, testing result is reflected in imaging goes up also imaging at full speed.
To continue explanation through getting back to Fig. 7.When judgment model is low-speed mode in step S27 (step S27 is " being "), paper S does not shorten delivery interval (step S33), (step S34) from optional paper supply tray 210 supplies.Then, paper S is transported to public conveying road hydrocarbon R4 and is not transported to delay transport path (step S35), goes up (step 36) thereby through transfer section 70 toner image is transferred to paper S.In explanation with reference to figure 7; For the print job except particular print; Paper S supplies with from optional paper supply tray 210; And be delivered directly to public transport path R4 from optional transport path R2, so that be transported to transfer section 70, rather than be transported to the body delivery path R1 and counter-rotating transport path R3 that representative postpones transport path.The operation of repeating step S33-S36 is accomplished until print job.
Simultaneously, the present invention is not limited to this embodiment, and any modification and any interpolation that do not depart from aim of the present invention and scope all can comprise in the present invention.
The invention enables the imaging device that provides compact to become possibility, in this imaging device, the physical characteristics of every paper of supply or position can be to be detected, thereby can realize high-speed imaging according to the result of aforementioned detection.
Claims (10)
1. imaging device that on paper, forms image comprises:
(a) paper supply tray, paper sheet stacking is on said paper supply tray;
(b) paper detection, said paper detection detects the physical characteristics or the position of every paper being supplied with by said paper supply tray;
(c) imaging moiety, said imaging moiety forms image based on the testing result of said paper detection;
(d) transfer section, said transfer section is transferred to the image that said imaging moiety forms on the paper;
(e) public transport path, the paper of supplying with from said paper supply tray is transported to said transfer section through said public transport path from alignment rolls;
(f) direct transport path, paper directly supplies to said public transport path through said direct transport path from said paper supply tray;
(g) postpone transport path, in said delay transport path, paper is joining with said public transport path from said direct transport path fork back, and paper is postponed when supplying to said public transport path from said paper supply tray;
(h) transport portion, the paper sheet delivery that said transport portion will be supplied with from said paper supply tray is to said transfer section; With
(i) controller, thus said controller control said transport portion and will be transported to said delay transport path from said direct transport path earlier by the paper that said paper supply tray is supplied with, thereafter with paper sheet delivery to said public transport path,
Wherein during the main body paper supply tray in said paper supply tray is arranged on the main body of said imaging device; Said direct transport path is corresponding to the body delivery path; In said body delivery path; Paper directly supplies to said public transport path from said main body paper supply tray, and said delay transport path supplies to the optional transport path of said public transport path from the optional paper supply tray that is connected with the main body of said imaging device corresponding to paper.
2. imaging device that on paper, forms image comprises:
(a) paper supply tray, paper sheet stacking is on said paper supply tray;
(b) paper detection, said paper detection detects the physical characteristics or the position of every paper being supplied with by said paper supply tray;
(c) imaging moiety, said imaging moiety forms image based on the testing result of said paper detection;
(d) transfer section, said transfer section is transferred to the image that said imaging moiety forms on the paper;
(e) public transport path, the paper of supplying with from said paper supply tray is transported to said transfer section through said public transport path from alignment rolls;
(f) direct transport path, paper directly supplies to said public transport path through said direct transport path from said paper supply tray;
(g) postpone transport path, in said delay transport path, paper is joining with said public transport path from said direct transport path fork back, and paper is postponed when supplying to said public transport path from said paper supply tray;
(h) transport portion, the paper sheet delivery that said transport portion will be supplied with from said paper supply tray is to said transfer section; With
(i) controller, thus said controller control said transport portion and will be transported to said delay transport path from said direct transport path earlier by the paper that said paper supply tray is supplied with, thereafter with paper sheet delivery to said public transport path,
Wherein during the main body paper supply tray in said paper supply tray is arranged on the main body of said imaging device; Said direct transport path is corresponding to the body delivery path; In said body delivery path; Paper directly supplies to said public transport path from said main body paper supply tray, and said delay transport path corresponding to the counter-rotating transport path, the paper that said counter-rotating transport path makes the front side be formed with image is inverted.
3. imaging device that on paper, forms image comprises:
(a) paper supply tray, paper sheet stacking is on said paper supply tray;
(b) paper detection, said paper detection detects the physical characteristics or the position of every paper being supplied with by said paper supply tray;
(c) imaging moiety, said imaging moiety forms image based on the testing result of said paper detection;
(d) transfer section, said transfer section is transferred to the image that said imaging moiety forms on the paper;
(e) public transport path, the paper of supplying with from said paper supply tray is transported to said transfer section through said public transport path from alignment rolls;
(f) direct transport path, paper directly supplies to said public transport path through said direct transport path from said paper supply tray;
(g) postpone transport path, in said delay transport path, paper is joining with said public transport path from said direct transport path fork back, and paper is postponed when supplying to said public transport path from said paper supply tray;
(h) transport portion, the paper sheet delivery that said transport portion will be supplied with from said paper supply tray is to said transfer section; With
(i) controller, thus said controller control said transport portion and will be transported to said delay transport path from said direct transport path earlier by the paper that said paper supply tray is supplied with, thereafter with paper sheet delivery to said public transport path,
Wherein when said paper supply tray is with the main body of said imaging device is connected optional paper supply tray; Said direct transport path is corresponding to optional transport path; In said optional transport path, paper directly supplies to said public transport path from said optional paper supply tray, and said delay transport path is corresponding to the body delivery path; In said body delivery path, paper supplies to said public transport path from the main body paper supply tray.
4. imaging device that on paper, forms image comprises:
(a) paper supply tray, paper sheet stacking is on said paper supply tray;
(b) paper detection, said paper detection detects the physical characteristics or the position of every paper being supplied with by said paper supply tray;
(c) imaging moiety, said imaging moiety forms image based on the testing result of said paper detection;
(d) transfer section, said transfer section is transferred to the image that said imaging moiety forms on the paper;
(e) public transport path, the paper of supplying with from said paper supply tray is transported to said transfer section through said public transport path from alignment rolls;
(f) direct transport path, paper directly supplies to said public transport path through said direct transport path from said paper supply tray;
(g) postpone transport path, in said delay transport path, paper is joining with said public transport path from said direct transport path fork back, and paper is postponed when supplying to said public transport path from said paper supply tray;
(h) transport portion, the paper sheet delivery that said transport portion will be supplied with from said paper supply tray is to said transfer section; With
(i) controller, thus said controller control said transport portion and will be transported to said delay transport path from said direct transport path earlier by the paper that said paper supply tray is supplied with, thereafter with paper sheet delivery to said public transport path,
Wherein when said paper supply tray is with the main body of said imaging device is connected optional paper supply tray; Said direct transport path is corresponding to optional transport path; In said optional transport path; Paper directly supplies to said public transport path from said optional paper supply tray, and said delay transport path corresponding to the counter-rotating transport path, the paper that said counter-rotating transport path makes the front side be formed with image is inverted.
5. like claim 3 or 4 described imaging devices, wherein said controller is controlled said transport portion, thereby for specific print job, after said delay transport path, paper sheet delivery is arrived said public transport path in paper sheet delivery.
6. imaging device as claimed in claim 5; Wherein said controller is controlled said transport portion; Thereby the print job for except that said specific print job is transported to said public transport path with paper from said paper supply tray through said direct transport path.
7. like claim 3 or 4 described imaging devices, wherein said paper detection is arranged on the upper reaches of said public transport path along sheet transport direction.
8. like claim 3 or 4 described imaging devices, wherein said paper detection is along the displacement that detects paper perpendicular to the direction of sheet transport direction.
9. like claim 3 or 4 described imaging devices, wherein said paper detection detects the width of paper on perpendicular to the direction of sheet transport direction.
10. like claim 3 or 4 described imaging devices, wherein said paper detection detects paper of whiteness.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007250980 | 2007-09-27 | ||
| JP2007250980 | 2007-09-27 | ||
| JP2007-250980 | 2007-09-27 | ||
| JP2008-111045 | 2008-04-22 | ||
| JP2008111045 | 2008-04-22 | ||
| JP2008111045A JP5050979B2 (en) | 2007-09-27 | 2008-04-22 | Image forming apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101398647A CN101398647A (en) | 2009-04-01 |
| CN101398647B true CN101398647B (en) | 2012-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101668132A Expired - Fee Related CN101398647B (en) | 2007-09-27 | 2008-09-24 | Image forming apparatus |
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| Country | Link |
|---|---|
| JP (1) | JP5050979B2 (en) |
| CN (1) | CN101398647B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5284186B2 (en) * | 2009-06-09 | 2013-09-11 | 京セラドキュメントソリューションズ株式会社 | Image forming apparatus |
| US8559831B2 (en) * | 2009-11-13 | 2013-10-15 | Eastman Kodak Company | Sheet registration for a multipass electrophotographic printer |
| JP5795899B2 (en) * | 2011-07-29 | 2015-10-14 | 京セラドキュメントソリューションズ株式会社 | Image forming system |
| JP6071526B2 (en) * | 2012-12-20 | 2017-02-01 | キヤノン株式会社 | Sheet transport device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5259606A (en) * | 1990-09-06 | 1993-11-09 | Ricoh Company, Ltd. | Sheet feeding device for image forming equipment |
| US6581929B2 (en) * | 2000-09-14 | 2003-06-24 | Kabushiki Kaisha Toshiba | Posture correction device for correcting a posture of conveyed paper-like material and paper-like material processing apparatus provided with a posture correction device |
| US6785478B2 (en) * | 2000-05-22 | 2004-08-31 | Canon Kabushiki Kaisha | Image formation apparatus and method for controlling the feed of a recording sheet prior to a print command |
-
2008
- 2008-04-22 JP JP2008111045A patent/JP5050979B2/en not_active Expired - Fee Related
- 2008-09-24 CN CN2008101668132A patent/CN101398647B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5259606A (en) * | 1990-09-06 | 1993-11-09 | Ricoh Company, Ltd. | Sheet feeding device for image forming equipment |
| US6785478B2 (en) * | 2000-05-22 | 2004-08-31 | Canon Kabushiki Kaisha | Image formation apparatus and method for controlling the feed of a recording sheet prior to a print command |
| US6581929B2 (en) * | 2000-09-14 | 2003-06-24 | Kabushiki Kaisha Toshiba | Posture correction device for correcting a posture of conveyed paper-like material and paper-like material processing apparatus provided with a posture correction device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101398647A (en) | 2009-04-01 |
| JP5050979B2 (en) | 2012-10-17 |
| JP2009098609A (en) | 2009-05-07 |
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