US20120056369A1 - Paper controller for image forming apparatus - Google Patents
Paper controller for image forming apparatus Download PDFInfo
- Publication number
- US20120056369A1 US20120056369A1 US13/206,091 US201113206091A US2012056369A1 US 20120056369 A1 US20120056369 A1 US 20120056369A1 US 201113206091 A US201113206091 A US 201113206091A US 2012056369 A1 US2012056369 A1 US 2012056369A1
- Authority
- US
- United States
- Prior art keywords
- paper
- conveying roller
- roller
- driving
- main passage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H85/00—Recirculating articles, i.e. feeding each article to, and delivering it from, the same machine work-station more than once
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00567—Handling of original or reproduction media, e.g. cutting, separating, stacking
- H04N1/0057—Conveying sheets before or after scanning
- H04N1/00572—Conveying sheets before or after scanning with refeeding for double-sided scanning, e.g. using one scanning head for both sides of a sheet
- H04N1/00575—Inverting the sheet prior to refeeding
- H04N1/00578—Inverting the sheet prior to refeeding using at least part of a loop, e.g. using a return loop
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00567—Handling of original or reproduction media, e.g. cutting, separating, stacking
- H04N1/0057—Conveying sheets before or after scanning
- H04N1/00572—Conveying sheets before or after scanning with refeeding for double-sided scanning, e.g. using one scanning head for both sides of a sheet
- H04N1/00575—Inverting the sheet prior to refeeding
- H04N1/0058—Inverting the sheet prior to refeeding using at least one dead-end path, e.g. using a sheet ejection path
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00567—Handling of original or reproduction media, e.g. cutting, separating, stacking
- H04N1/0057—Conveying sheets before or after scanning
- H04N1/00599—Using specific components
- H04N1/00602—Feed rollers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00567—Handling of original or reproduction media, e.g. cutting, separating, stacking
- H04N1/00631—Ejecting or stacking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/10—Rollers
- B65H2404/14—Roller pairs
- B65H2404/141—Roller pairs with particular shape of cross profile
- B65H2404/1411—D-shape / cylindrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/20—Location in space
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/20—Location in space
- B65H2511/21—Angle
- B65H2511/212—Rotary position
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2513/00—Dynamic entities; Timing aspects
- B65H2513/40—Movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2553/00—Sensing or detecting means
- B65H2553/60—Details of intermediate means between the sensing means and the element to be sensed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/03—Image reproduction devices
- B65H2801/06—Office-type machines, e.g. photocopiers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/0077—Types of the still picture apparatus
- H04N2201/0081—Image reader
Definitions
- the present invention relates generally to an office machine, and more particularly to a paper controller of an image forming apparatus.
- Taiwan utility model patent No. M291574 provides a paper control device which includes a linkage mechanism to separate an idler at a paper outlet from an outputting roller. It prevents the overlapped papers from jam in a double-sided scanning or double-sided printing work.
- U.S. Pat. No. 5,784,680 provides another device having a paw to switch paper passages that the paper inlet and the paper outlet are located at different passages in double-sided scanning or double-sided printing to overcome the jam problem.
- the primary objective of the present invention is to provide a paper controller for an image forming apparatus to overcome the paper jam problem with a simple structure.
- a paper controller of the present invention includes a machine base having a paper passage therein, and the paper passage including a main passage and a bypass, wherein opposite ends of the main passage are connected to a paper inlet and a paper outlet of the machine base respectively and opposite ends of the bypass are connected to the main passage and one of the end of the bypass is close to the paper outlet; a first conveying roller pivoted on the machine base and having a portion received in the main passage; a driven roller pivoted on the machine and having a portion received in the main passage, wherein the driven roller is closer to the paper outlet than the end of the bypass; and a second conveying roller pivoted on the machine base and having a portion received in the main passage and association with the driven roller, wherein the second conveying roller has a driving-free portion and a driving portion, and a distance between the driving portion and a center of the second conveying roller is greater than a distance between the driving-free portion and the center of the second conveying roller that when the second conveying roller rotates, the
- the paper will not jam at the paper outlet during a double-sided scanning.
- FIG. 1 is a sectional view of a first preferred embodiment of the present invention
- FIG. 2 is a partially sectional view of the first preferred embodiment of the present invention
- FIG. 3 shows the second conveying roller having a convex face
- FIG. 4 shows the second conveying roller having a concave face
- FIG. 5 shows the first paper location sensor
- FIG. 6 shows the second paper location sensor
- FIG. 7 shows the roller sensor
- FIG. 8 to FIG. 13 are sketch diagrams, showing the actions of the first preferred embodiment of the present invention.
- FIG. 14 is a sectional view of a second preferred embodiment of the present invention.
- an image forming apparatus 100 of the first preferred embodiment of the present invention includes a scanning device 1 and a paper controller 2 .
- the scanning device 1 scans a paper and forms electromagnetic data.
- the paper controller 2 is provided on the scanning device 1 and includes a machine base 10 , a paper feeder 20 , a first conveying roller 30 , a second conveying roller 40 , a third conveying roller 50 , a controlling device 60 , a first paper location sensor 70 , a second paper location sensor 75 , and a roller sensor 80 .
- the machine base 10 has a paper passage 11 therein for papers to pass therethrough.
- the passage 11 has a main passage 111 and a bypass 112 .
- the main passage 111 has a start end 111 a and a tail end 111 b.
- the start end 111 a is out of the machine base 10 to form a paper inlet 12
- the tail end 111 b is out of the machine base 10 also to form a paper outlet 13 .
- the scanning device 1 has a scanning point S which is located at a halfway of the main passage 111 to scan the paper passing through the main passage 111 .
- the bypass 111 b has an end connected to the main passage 111 between the start end 111 a and the tail end 111 b and the other end connected to the paper outlet 13 .
- the paper feeder 20 is provided at the paper inlet 12 of the machine base 10 and has a pre-feeding roller 21 and a feeding roller 22 .
- the pre-feeding roller 21 conveys the paper at the paper inlet 12 forward the main passage 111 in sequence, and after that the feeding roller 22 keeps conveying the paper into the main passage 111 .
- the first conveying roller 30 is pivoted on the machine base 10 in the main passage 111 between the start end 111 a and the scanning point S.
- a driven roller 91 is provided in the main passage 111 in association with the first conveying roller 30 .
- the driven roller 91 touches the first conveying roller 30 to convey the paper, after the feeding roller 22 , to the scanning point S and the paper outlet 13 .
- the third conveying roller 50 is pivoted on the machine base 10 in the main passage 111 adjacent to the tail end 111 b and between the ends of the bypass 112 .
- a driven roller 92 is provided in the bypass 112 in association with the third conveying roller 50 .
- the driven roller 92 touches the third conveying roller 50 to convey the paper in the bypass 112 into the main passage 111 .
- a driven roller 93 is provided in the main passage 111 in association with the third conveying roller 50 .
- the driven roller 93 touches the third conveying roller 50 to convey the paper in the main passage 111 to the paper outlet 13 .
- a driven roller 94 is provided in the main passage 111 adjacent to the paper outlet 13 and in association with the second conveying roller 40 .
- the driven roller 94 touches the second conveying roller 40 to convey paper out of the paper outlet 13 or convey the paper from the paper outlet 13 to the bypass 112 .
- the difference between the second conveying roller 40 and the other conveying rollers 30 , 50 is that the second conveying roller 40 is not round, it has a flat portion (driving-free portion 41 ).
- a distance between a center of the second conveying roller 40 and the driving-free portion 41 is shorter than a distance between the center and the other circumference (driving portion 42 ).
- the surface portion is flat, however it may be a roller 45 with a convex gap face as shown in FIG. 3 or a roller 46 with concave gap face as shown in FIG. 4 , or other forms with the character of a portion of the surface having a shorter diameter.
- a perimeter of the driving portion 42 of the second conveying roller 40 is greater than a distance L of the bypass 112 between the second conveying roller 40 and the third conveying roller 50 that the third conveying roller 50 may touch the paper from the second conveying roller 40 before the second conveying roller 40 touches the paper because the driving-free portion 41 of the second conveying roller 40 faces the driven wheel 94 .
- the controlling device 60 is provided on the machine base 10 to control the rollers 21 , 22 and the conveying rollers 30 , 40 , 50 .
- the first paper position sensor 70 is provided on the machine base 10 beside the paper inlet 12 . As shown in FIG. 5 , in the present invention, the first paper position sensor 70 has a light emitter 71 and a light receiver 72 that the light emitter 71 emits light to the light receiver 72 . The light of the light emitter 71 will be cut off when a paper is put in the paper inlet 12 that a signal is transmitted to the controlling device 60 when the paper is ready and it may start the paper feeder 20 to send the paper into the paper passage 11 .
- the second paper location sensor 75 is provided on the machine base 10 in the main passage 111 . As shown in FIG. 6 , in the present invention, the second paper location sensor 75 has a light emitter 76 and a light receiver 77 that the light emitter 76 emits light to the light receiver 77 . The light of the light emitter 76 will be cut off when a paper is passing through therebetween that a signal is transmitted to the controlling device 60 when the paper is in position and it may start the scanning device 1 .
- a preferred location of the second paper location sensor 75 is between the paper inlet 12 and the first conveying roller 30 and close to the first conveying roller 30 .
- the second paper location sensor 75 senses the paper's location and starts the first conveying roller 30 for de-skew of the paper when the paper arrives the first conveying roller 30 .
- the first and second paper location sensor 70 , 75 may be replaced by optical switches or other relative devices.
- the roller sensor 80 is provided on the base 10 and is at the tail end 111 b of the main passage 111 . As shown in FIG. 7 , in the present invention, the roller sensor 80 has a disk 81 , a light emitter 82 , and a light receiver 83 .
- the disk 81 is provided on an axle of the second conveying roller 40 and has a gap 811 thereon.
- the light emitter 82 and the light receiver 83 are at opposite sides of the disk 81 that the light receiver 83 may receive the light from the light emitter 82 when the gap 811 of the disk 81 is right between the light emitter 82 and the light receiver 83 while the second conveying roller 40 is rotating.
- the roller sensor 80 may provide intermittent signals to the controlling device 60 to tell the position of the driving-free portion 41 of the second conveying roller 40 .
- the controlling device 60 will stop the second conveying roller 40 when the driving-free portion 41 faces the driven roller 94 .
- the roller sensor 80 may be replaced by reed switch, micro-switch, or other relative devices.
- the paper feeder 20 sends the paper P into the main passage 111 when the first paper location sensor 70 detects a piece of paper arriving at the paper inlet 12 , and then the scanning device 1 is started to scan the paper P when the second paper location sensor 75 detects a front P 1 of the paper P ( FIG. 8 ).
- the second conveying roller 40 is started for a clockwise rotation and the third conveying roller 50 is started for a counterclockwise rotation to send the paper P toward the paper outlet 13 when a rear P 2 of the paper P leaves the second paper location sensor 75 ( FIG. 9 ). After the paper P leaves the third conveying roller 50 , as shown in FIG.
- the second conveying roller 40 is started for a counterclockwise rotation to send the paper P into the bypass 112 from the paper outlet 13 .
- the controlling device 60 stops the second conveying roller 40 according to the roller sensor 80 , as shown in FIG. 11 .
- the driving-free portion 41 of the second conveying roller 40 faces the driven roller 94 that there is a gap between the second conveying roller 40 and the driven roller 94 .
- the third conveying roller 50 keeps counterclockwise rotation to send the paper P to the main passage 111 for the second scanning.
- the paper P As the rear P 2 of the paper P is moved out of the paper outlet 13 and the front P 1 of the paper P has not entered the paper outlet 13 yet, the paper P has the front P 1 and the rear P 2 overlapped at the paper outlet 13 , as shown in FIG. 12 . At this moment, the paper P is free to be moved by the third conveying roller 50 because of the gap between the second conveying roller 40 and the driven roller 94 to prevent the jam problem. As the scanning device 1 completes the second scanning, as shown in FIG. 13 , the second conveying roller 40 is restarted for clockwise rotation to send the paper P out of the paper outlet 13 .
- the paper P may be sent into the bypass 112 again from the paper outlet 13 without scanning to flip the paper P that the papers may be stacked as they are stacked before scanning.
- the procedure is completed when the paper P is moved out of the paper outlet 13 , as shown in FIG. 7 and FIG. 8 , without having to send the paper P back into the bypass 112 .
- a paper controller 3 of the second preferred embodiment of the present invention provides a first conveying roller 310 serving both functions of sending paper in a main passage 331 to a paper outlet 330 and sending paper in a bypass 332 to the main passage 331 .
- the action of the first conveying roller 310 will not affect a second conveying roller 320 . It is clear that only two conveying rollers are needed in the paper controller 3 of the second preferred embodiment not three as above.
Abstract
A paper controller of an image forming apparatus includes a machine base having a main passage and a bypass therein. Three conveying rollers are pivoted on the machine to send papers going through the main passage and the bypass respectively. One conveying roller adjacent to the paper outlet has a driving portion and a driving-free portion, which is a flat face on the circumference, that the driving portion touches a driven roller to make it rotating and the driving-free portion will not touch the driven roller when the conveying roller is rotating that a gap is formed between the driving-free portion and the driven roller to prevent the paper from jamming at the paper outlet.
Description
- 1. Field of the Invention
- The present invention relates generally to an office machine, and more particularly to a paper controller of an image forming apparatus.
- 2. Description of the Related Art
- When an image forming apparatus, such as copy machine, scanner, printer, and other office machines, is doing double-sided scanning or double-sided printing, papers occasionally overlap and jam during the process of feeding papers. To overcome this problem, Taiwan utility model patent No. M291574 provides a paper control device which includes a linkage mechanism to separate an idler at a paper outlet from an outputting roller. It prevents the overlapped papers from jam in a double-sided scanning or double-sided printing work. U.S. Pat. No. 5,784,680 provides another device having a paw to switch paper passages that the paper inlet and the paper outlet are located at different passages in double-sided scanning or double-sided printing to overcome the jam problem.
- However, the above patents provide complex structures that the costs of such devices are very high and they are difficult to maintain and repair.
- The primary objective of the present invention is to provide a paper controller for an image forming apparatus to overcome the paper jam problem with a simple structure.
- To meet the primary objective, a paper controller of the present invention includes a machine base having a paper passage therein, and the paper passage including a main passage and a bypass, wherein opposite ends of the main passage are connected to a paper inlet and a paper outlet of the machine base respectively and opposite ends of the bypass are connected to the main passage and one of the end of the bypass is close to the paper outlet; a first conveying roller pivoted on the machine base and having a portion received in the main passage; a driven roller pivoted on the machine and having a portion received in the main passage, wherein the driven roller is closer to the paper outlet than the end of the bypass; and a second conveying roller pivoted on the machine base and having a portion received in the main passage and association with the driven roller, wherein the second conveying roller has a driving-free portion and a driving portion, and a distance between the driving portion and a center of the second conveying roller is greater than a distance between the driving-free portion and the center of the second conveying roller that when the second conveying roller rotates, the driving portion touches the driven roller and there is a gap between the driving-free portion and driven roller.
- In accordance with the ideas above, the paper will not jam at the paper outlet during a double-sided scanning.
-
FIG. 1 is a sectional view of a first preferred embodiment of the present invention; -
FIG. 2 is a partially sectional view of the first preferred embodiment of the present invention; -
FIG. 3 shows the second conveying roller having a convex face; -
FIG. 4 shows the second conveying roller having a concave face; -
FIG. 5 shows the first paper location sensor; -
FIG. 6 shows the second paper location sensor; -
FIG. 7 shows the roller sensor; -
FIG. 8 toFIG. 13 are sketch diagrams, showing the actions of the first preferred embodiment of the present invention; and -
FIG. 14 is a sectional view of a second preferred embodiment of the present invention. - As shown in
FIG. 1 , animage forming apparatus 100 of the first preferred embodiment of the present invention includes ascanning device 1 and apaper controller 2. Thescanning device 1 scans a paper and forms electromagnetic data. Thepaper controller 2 is provided on thescanning device 1 and includes amachine base 10, apaper feeder 20, afirst conveying roller 30, asecond conveying roller 40, athird conveying roller 50, a controllingdevice 60, a firstpaper location sensor 70, a secondpaper location sensor 75, and aroller sensor 80. - The
machine base 10 has apaper passage 11 therein for papers to pass therethrough. Thepassage 11 has amain passage 111 and abypass 112. Themain passage 111 has astart end 111 a and a tail end 111 b. Thestart end 111 a is out of themachine base 10 to form apaper inlet 12, and the tail end 111 b is out of themachine base 10 also to form apaper outlet 13. Thescanning device 1 has a scanning point S which is located at a halfway of themain passage 111 to scan the paper passing through themain passage 111. The bypass 111 b has an end connected to themain passage 111 between thestart end 111 a and the tail end 111 b and the other end connected to thepaper outlet 13. - The
paper feeder 20 is provided at thepaper inlet 12 of themachine base 10 and has apre-feeding roller 21 and afeeding roller 22. Thepre-feeding roller 21 conveys the paper at thepaper inlet 12 forward themain passage 111 in sequence, and after that thefeeding roller 22 keeps conveying the paper into themain passage 111. - The
first conveying roller 30 is pivoted on themachine base 10 in themain passage 111 between thestart end 111 a and the scanning point S. A drivenroller 91 is provided in themain passage 111 in association with thefirst conveying roller 30. The drivenroller 91 touches thefirst conveying roller 30 to convey the paper, after thefeeding roller 22, to the scanning point S and thepaper outlet 13. - The
third conveying roller 50 is pivoted on themachine base 10 in themain passage 111 adjacent to the tail end 111 b and between the ends of thebypass 112. A drivenroller 92 is provided in thebypass 112 in association with thethird conveying roller 50. The drivenroller 92 touches thethird conveying roller 50 to convey the paper in thebypass 112 into themain passage 111. A drivenroller 93 is provided in themain passage 111 in association with thethird conveying roller 50. The drivenroller 93 touches thethird conveying roller 50 to convey the paper in themain passage 111 to thepaper outlet 13. - As shown in
FIG. 2 , a drivenroller 94 is provided in themain passage 111 adjacent to thepaper outlet 13 and in association with thesecond conveying roller 40. The drivenroller 94 touches thesecond conveying roller 40 to convey paper out of thepaper outlet 13 or convey the paper from thepaper outlet 13 to thebypass 112. The difference between thesecond conveying roller 40 and theother conveying rollers second conveying roller 40 is not round, it has a flat portion (driving-free portion 41). A distance between a center of thesecond conveying roller 40 and the driving-free portion 41 is shorter than a distance between the center and the other circumference (driving portion 42). Therefore, there is a gap intermittently formed between thesecond conveying roller 40 and the drivenroller 94 when thesecond conveying roller 40 is running. In the present embodiment, the surface portion is flat, however it may be aroller 45 with a convex gap face as shown inFIG. 3 or aroller 46 with concave gap face as shown inFIG. 4 , or other forms with the character of a portion of the surface having a shorter diameter. - A perimeter of the
driving portion 42 of thesecond conveying roller 40 is greater than a distance L of thebypass 112 between thesecond conveying roller 40 and thethird conveying roller 50 that thethird conveying roller 50 may touch the paper from thesecond conveying roller 40 before thesecond conveying roller 40 touches the paper because the driving-free portion 41 of thesecond conveying roller 40 faces the drivenwheel 94. - The controlling
device 60 is provided on themachine base 10 to control therollers conveying rollers - The first
paper position sensor 70 is provided on themachine base 10 beside thepaper inlet 12. As shown inFIG. 5 , in the present invention, the firstpaper position sensor 70 has alight emitter 71 and alight receiver 72 that thelight emitter 71 emits light to thelight receiver 72. The light of thelight emitter 71 will be cut off when a paper is put in thepaper inlet 12 that a signal is transmitted to the controllingdevice 60 when the paper is ready and it may start thepaper feeder 20 to send the paper into thepaper passage 11. - The second
paper location sensor 75 is provided on themachine base 10 in themain passage 111. As shown inFIG. 6 , in the present invention, the secondpaper location sensor 75 has alight emitter 76 and alight receiver 77 that thelight emitter 76 emits light to thelight receiver 77. The light of thelight emitter 76 will be cut off when a paper is passing through therebetween that a signal is transmitted to the controllingdevice 60 when the paper is in position and it may start thescanning device 1. - In addition, a preferred location of the second
paper location sensor 75 is between thepaper inlet 12 and thefirst conveying roller 30 and close to thefirst conveying roller 30. The secondpaper location sensor 75 senses the paper's location and starts thefirst conveying roller 30 for de-skew of the paper when the paper arrives thefirst conveying roller 30. In practice, the first and secondpaper location sensor - The
roller sensor 80 is provided on thebase 10 and is at the tail end 111 b of themain passage 111. As shown inFIG. 7 , in the present invention, theroller sensor 80 has adisk 81, alight emitter 82, and alight receiver 83. Thedisk 81 is provided on an axle of the second conveyingroller 40 and has agap 811 thereon. Thelight emitter 82 and thelight receiver 83 are at opposite sides of thedisk 81 that thelight receiver 83 may receive the light from thelight emitter 82 when thegap 811 of thedisk 81 is right between thelight emitter 82 and thelight receiver 83 while the second conveyingroller 40 is rotating. In other words, theroller sensor 80 may provide intermittent signals to the controllingdevice 60 to tell the position of the driving-free portion 41 of the second conveyingroller 40. The controllingdevice 60 will stop the second conveyingroller 40 when the driving-free portion 41 faces the drivenroller 94. In practice, theroller sensor 80 may be replaced by reed switch, micro-switch, or other relative devices. - As shown in
FIG. 8 toFIG. 13 , in a procedure of scanning double sides of a paper, so called double-sided scanning, thepaper feeder 20 sends the paper P into themain passage 111 when the firstpaper location sensor 70 detects a piece of paper arriving at thepaper inlet 12, and then thescanning device 1 is started to scan the paper P when the secondpaper location sensor 75 detects a front P1 of the paper P (FIG. 8 ). The second conveyingroller 40 is started for a clockwise rotation and the third conveyingroller 50 is started for a counterclockwise rotation to send the paper P toward thepaper outlet 13 when a rear P2 of the paper P leaves the second paper location sensor 75 (FIG. 9 ). After the paper P leaves the third conveyingroller 50, as shown inFIG. 10 , the second conveyingroller 40 is started for a counterclockwise rotation to send the paper P into thebypass 112 from thepaper outlet 13. When the paper P goes into thebypass 112, the controllingdevice 60 stops the second conveyingroller 40 according to theroller sensor 80, as shown inFIG. 11 . When the second conveyingroller 40 stops, the driving-free portion 41 of the second conveyingroller 40 faces the drivenroller 94 that there is a gap between the second conveyingroller 40 and the drivenroller 94. At the same time, the third conveyingroller 50 keeps counterclockwise rotation to send the paper P to themain passage 111 for the second scanning. As the rear P2 of the paper P is moved out of thepaper outlet 13 and the front P1 of the paper P has not entered thepaper outlet 13 yet, the paper P has the front P1 and the rear P2 overlapped at thepaper outlet 13, as shown inFIG. 12 . At this moment, the paper P is free to be moved by the third conveyingroller 50 because of the gap between the second conveyingroller 40 and the drivenroller 94 to prevent the jam problem. As thescanning device 1 completes the second scanning, as shown inFIG. 13 , the second conveyingroller 40 is restarted for clockwise rotation to send the paper P out of thepaper outlet 13. - After double-sided scanning, the paper P may be sent into the
bypass 112 again from thepaper outlet 13 without scanning to flip the paper P that the papers may be stacked as they are stacked before scanning. - For a single side scanning, the procedure is completed when the paper P is moved out of the
paper outlet 13, as shown inFIG. 7 andFIG. 8 , without having to send the paper P back into thebypass 112. - As shown in
FIG. 14 , apaper controller 3 of the second preferred embodiment of the present invention provides a first conveyingroller 310 serving both functions of sending paper in amain passage 331 to apaper outlet 330 and sending paper in abypass 332 to themain passage 331. The action of the first conveyingroller 310 will not affect a second conveyingroller 320. It is clear that only two conveying rollers are needed in thepaper controller 3 of the second preferred embodiment not three as above. - The description above is a few preferred embodiments of the present invention and the equivalence of the present invention is still in the scope of claim construction of the present invention.
Claims (10)
1. A paper controller of an image forming apparatus, comprising:
a machine base having a paper passage therein, and the paper passage including a main passage and a bypass, wherein opposite ends of the main passage are connected to a paper inlet and a paper outlet of the machine base respectively and opposite ends of the bypass are connected to the main passage and one of the end of the bypass is close to the paper outlet;
a first conveying roller pivoted on the machine base and having a portion received in the main passage;
a driven roller pivoted on the machine and having a portion received in the main passage, wherein the driven roller is closer to the paper outlet than the end of the bypass; and
a second conveying roller pivoted on the machine base and having a portion received in the main passage and association with the driven roller, wherein the second conveying roller has a driving-free portion and a driving portion, and a distance between the driving portion and a center of the second conveying roller is greater than a distance between the driving-free portion and the center of the second conveying roller that when the second conveying roller rotates, the driving portion touches the driven roller and there is a gap between the driving-free portion and driven roller.
2. The paper controller as defined in claim 1 , further comprising a third conveying roller pivoted on the machine base and having portions received in the main passage and in the bypass respectively, and a length of the driving portion of the second conveying roller is greater than a distance in the bypass between the second conveying roller and the third conveying roller.
3. The paper controller as defined in claim 1 , further comprising paper feeder provided on the machine base which includes a pre-feeding roller to move papers at the paper inlet toward the main passage in sequence and a feeding roller behind the pre-feeding roller to move the papers into the main passage in sequence.
4. The paper controller as defined in claim 1 , further comprising a controlling device to control the first and second conveying rollers to rotating in a predetermined direction and stop them and a roller sensor to sense a position of the driving-free portion of the second conveying roller.
5. The paper controller as defined in claim 1 , further comprising a controlling device to control the first and second conveying rollers to rotating in a predetermined direction and stop them, and a paper location sensor to sense a location of the paper in the passage.
6. The paper controller as defined in claim 1 , further comprising a controlling device to control the first and second conveying rollers to rotating in a predetermined direction and stop them, and a paper location sensor to sense the paper at the paper inlet.
7. The paper controller as defined in claim 4 , wherein the roller sensor includes a disk with a gap provided on an axle of the second conveying roller, and a light emitter and a light receiver at opposite sides of the disk.
8. The paper controller as defined in claim 1 , wherein the driving-free portion of the second conveying roller has a flat face.
9. The paper controller as defined in claim 1 , wherein the driving-free portion of the second conveying roller has a convex face.
10. The paper controller as defined in claim 1 , wherein the driving-free portion of the second conveying roller has a concave face.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW099129959 | 2010-09-03 | ||
TW099129959A TWI431442B (en) | 2010-09-03 | 2010-09-03 | And a paper sheet movement control device for the image forming apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120056369A1 true US20120056369A1 (en) | 2012-03-08 |
Family
ID=45770130
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/206,091 Abandoned US20120056369A1 (en) | 2010-09-03 | 2011-08-09 | Paper controller for image forming apparatus |
Country Status (3)
Country | Link |
---|---|
US (1) | US20120056369A1 (en) |
JP (1) | JP5134067B2 (en) |
TW (1) | TWI431442B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100183351A1 (en) * | 2009-01-22 | 2010-07-22 | Fuji Xerox Co., Ltd. | Medium conveying apparatus and image forming apparatus |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7189110B2 (en) | 2019-10-09 | 2022-12-13 | 株式会社神戸製鋼所 | LAMINATED PRODUCT MANUFACTURING METHOD AND LAMINATED MOLDED PRODUCT |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5332205A (en) * | 1991-07-05 | 1994-07-26 | Sindo Ricoh Co., Ltd. | Automatic document feeders for copying machines and method for automatically controlling such |
US6209861B1 (en) * | 1998-03-11 | 2001-04-03 | Kyocera Mita Corporation | Sheet transport device and automatic document feeder |
US20050253325A1 (en) * | 2004-05-14 | 2005-11-17 | Seiko Epson Corporation | Sheet feeding device |
US20090289413A1 (en) * | 2008-05-22 | 2009-11-26 | Wen-Chung Lo | Sheet ejection mechanism and duplex sheet feeding system having the sgeeet ejection mechanism |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101354565B (en) * | 2007-07-27 | 2010-06-09 | 京瓷美达株式会社 | Image forming apparatus |
JP2010083600A (en) * | 2008-09-29 | 2010-04-15 | Ricoh Co Ltd | Document carrying device, image reader, control method of document carrying device, control program and recording medium |
-
2010
- 2010-09-03 TW TW099129959A patent/TWI431442B/en not_active IP Right Cessation
- 2010-11-30 JP JP2010267645A patent/JP5134067B2/en not_active Expired - Fee Related
-
2011
- 2011-08-09 US US13/206,091 patent/US20120056369A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5332205A (en) * | 1991-07-05 | 1994-07-26 | Sindo Ricoh Co., Ltd. | Automatic document feeders for copying machines and method for automatically controlling such |
US6209861B1 (en) * | 1998-03-11 | 2001-04-03 | Kyocera Mita Corporation | Sheet transport device and automatic document feeder |
US20050253325A1 (en) * | 2004-05-14 | 2005-11-17 | Seiko Epson Corporation | Sheet feeding device |
US20090289413A1 (en) * | 2008-05-22 | 2009-11-26 | Wen-Chung Lo | Sheet ejection mechanism and duplex sheet feeding system having the sgeeet ejection mechanism |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100183351A1 (en) * | 2009-01-22 | 2010-07-22 | Fuji Xerox Co., Ltd. | Medium conveying apparatus and image forming apparatus |
US8262088B2 (en) * | 2009-01-22 | 2012-09-11 | Fuji Xerox Co., Ltd. | Medium conveying apparatus and image forming apparatus |
Also Published As
Publication number | Publication date |
---|---|
JP2012056770A (en) | 2012-03-22 |
JP5134067B2 (en) | 2013-01-30 |
TWI431442B (en) | 2014-03-21 |
TW201211705A (en) | 2012-03-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TWI807374B (en) | Image reading method | |
JP4681466B2 (en) | Automatic document feeder | |
US6962332B2 (en) | Media conveying mechanism | |
US20120056369A1 (en) | Paper controller for image forming apparatus | |
JP2016088677A (en) | Paper transportation device and image formation system | |
JP2007096803A (en) | Automatic document feeder | |
JP2005154119A (en) | Image forming device | |
JP2006282349A (en) | Image forming device | |
JP5064518B2 (en) | Automatic document feeder and image forming apparatus having the same | |
US10091393B2 (en) | Document conveying device, document reading apparatus, and document conveying method | |
US20090190976A1 (en) | Automatic document feeder and method for duplex scanning a document utilizing the same | |
JP2017095228A (en) | Document conveying device | |
JP2012151846A (en) | Automatic document feeder and document feeding method | |
JP6514627B2 (en) | Reader and combined device | |
JP2007161479A (en) | Paper feeding carrying control method and image forming device | |
US9334134B2 (en) | Image reading apparatus, document conveying apparatus and composite apparatus | |
JP5590690B2 (en) | Automatic document feeder and image forming apparatus having the same | |
JP2012091914A (en) | Paper conveying device | |
JP2017171402A (en) | Paper sheet feeder | |
JP4652117B2 (en) | Automatic document feeder | |
JP2017105589A (en) | Sheet alignment device and image formation apparatus | |
JP2009263128A (en) | Belt unit, image reading device, and image forming device | |
JP5348643B2 (en) | Automatic document feeder and image forming apparatus having the same | |
JP2013035687A (en) | Automatic document feeding device, image reading device, and automatic document feeding method | |
JP2009018886A (en) | Image reading device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ASIA OPTICAL CO., INC., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HSIEN-CHI, LIN;REEL/FRAME:026721/0917 Effective date: 20110801 |
|
AS | Assignment |
Owner name: ASIA OPTICAL INTERNATIONAL LTD., VIRGIN ISLANDS, B Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ASIA OPTICAL CO., INC.;REEL/FRAME:028842/0089 Effective date: 20120816 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |