II COMPOSITION/OPERATION
A. Status indicator light
1.9 Operating environment
Temperature: 10°C to 30°C
Humidity: 10% RH to 80% RH (with no condensation)
Other
1 -4
I Ou
df603to1002c
[6] [5]
[3]
[2]
[4]
[1] Original feed tray [5] Reverse section
[2] Original exit tray (for large size) [6] Original exit section (for large size) [3] Original exit section (for small size) [7] Conveyance section
[4] Original exit tray (for small size) [8] Original feed section
I Ou
B. Double sided copy mode (small size) (1) Front scan
df603to1003c
[3]
[2]
[4]
[1]
[1] Original feed tray [3] Exit gate
[2] Original exit tray (for small size) [4] Image read position (slit glass section)
[1]
[2]
1 -6
I Ou
(3) Paper exit
df603to1005c
[3]
[4]
[2]
1
2 3
[1] Original feed tray [3] Exit gate
[2] Original exit tray (for small size) [4] Image read position (slit glass section)
df603to1006c
[3]
[2]
[1]
[1] Original feed tray [3] Exit gate
[2] Original exit tray (for small size)
I Ou
D. Double sided copy mode (large size) (1) Front scan
df603to1007c
[3]
[2]
[4]
[1] Original feed tray [3] Exit roller
[2] Original exit tray (for large size) [4] Image read position (slit glass section)
[3]
[4]
[2]
[1]
1 -8
I Ou
(3) Paper exit
df603to1009c
[3]
[4]
[2]
1
2 3
[1] Original feed tray [3] Exit gate
[2] Original exit tray (for large size) [4] Image read position (slit glass section)
df603to1010c
[3]
[4]
[2]
[1]
[1] Original feed tray [3] Exit gate
[2] Original exit tray (for large size) [4] Exit roller
II Composition/Operation
1.1 Composition
df603to2001c
[2]
[3]
[4]
[1]
[5]
Symbol Item Specification/mechanism
[1] Original size detection in the main scan direction Guide plate + VR [2] Original size detection in the sub scan direction Photo sensor [3] Original feed tray up/down method Up/down plate + motor
[4] Multi feed detection Ultrasonic sensor
[5] Registration method Roller + motor
2 -2
II Composition/Operation
B. Paper feed drive
df603to2002c
[2]
[1]
[1] Up/down plate [2] Tray up/down motor (M303)
df603to2003c
[2]
[1]
[5]
[4]
[3]
[1] Registration roller [4] Pick-up roller
[2] Original feed motor (M302) [5] Paper feed roller
[3] SDF switching solenoid (SD301)
II Composition/Operation (1) Size detection in the main scan direction
The front and rear dimensions of the original are detected according to the position of the guide plate connected to the original size VR (VR301).
(2) Size detection in the sub scan direction
The right and left dimensions of the original are detected according to the ON/OFF combination of the original size sensor /Rt (PS302) and the original size sensor /Lt (PS303).
B. Mixed original mode
(1) Size detection in the main scan direction
The front and rear dimensions of the maximum mixed original are detected according to the position of the VR301 guide plate.
(2) Size detection in the sub scan direction
The conveyance roller [3] rotates in the forward direction to convey the original to the paper exit tray (for large size) [2]. The conveyance roller stops rotation a specified period of time after the original registration sensor /Rt (PS318) [1] detects the trailing edge of the original. At this time, depending on the ON time period of the PS318, the conveyance direction and the size of the original are detected.
[2]
[1]
2 -4
II Composition/Operation
stops a specified period of time after the original conveyance sensor (PS308) [4] detects the leading edge of the original.
After that, the same read (scan) operation as that in the normal mode is made.
The original size detection operation for the second and succeeding originals varies according to a copy mode employed: the single sided copy mode or the double sided copy mode.
• Single sided copy mode: After the scan operation of the preceding original starts.
• Double sided copy mode: After the scan operation of the back side of the preceding original starts.
1.3.2 Pick-up mechanism
The tray up/down motor (M303) sends up the up/down plate [2] to move the original to the pick-up roller posi-tion [1].
When the tray upper limit sensor (PS315) [4] turns ON, the M303 turns OFF to be put in the standby condition with the up/down plate left raised.
The original comes into contact with the pick-up roller [3] to conduct the pick-up (paper feed) operation.
df603to2005c
II Composition/Operation separation roller makes a reverse rotation to convey a single sheet of original.
B. SDF (single document feeder) control
In the single document feeder mode, to improve the paper feedability of thick paper and other originals the paper feed of which is not guaranteed, the SDF switching solenoid (SD301) cuts off the drive of the separation roller to conduct the paper feed operation.
1.3.4 Multi feed detection control
The multi feed detection is made by using the multi feed sensor /1 (MFS1) and the multi feed sensor /2 (MFS2) which employ a method to check originals if they are multi fed based on the amount of the transmission of ultra-sonic waves. The accuracy in the multi feed detection has been improved by using the multi feed sensor of the ultrasonic sensor, which supports the speed-up in the paper feed. The multi feed sensor is made up of a pair of a sender and a receiver.
The following are originals the multi feed of which can be detected.
• Originals the main scan direction of which is in excess of 210 mm. Originals the main scan direction of which is less than 210 mm cannot be recognized due to the position of the sensor.
• Originals the weighing of which is between 50 g/m2 and 128 g/m2. Originals the weighing of which is beyond the range mentioned above may not be recognized even when multi fed.
1.3.5 Original empty detection control
The detection of the presence of original in the original tray section while in the scan stop is made by the original empty sensor (PS305). And also, the original empty detection while in the scan is made by the original count sensor (PS310) to stop the paper feed from the trays /1 to /5 after PS310 detects the trailing edge of the last original.
2 -6
II Composition/Operation
istration sensor /Rt (PS318) turns ON, the up/down plate comes down by a fixed distance and a loop is formed until the original registration sensor /Lt (PS306) turns ON to adjust an original skew.
df603to2007c
[1] Start button ON [5] Feed of the 2nd sheet of paper
[2] Feed of the 1st sheet of paper [6] Loop formation of the 2nd sheet of paper [3] Loop formation of the 1st sheet of paper [7] Pre-feed of the 2nd sheet of paper [4] Pre-feed of the 1st sheet of paper
II Composition/Operation
df603to2008c
[3]
[2] [1]
Symbol Item Specification/mechanism
[1] Conveyance path switching method Flapper + solenoid [2] Original skew detection method Photo sensor [3] Original centering detection method LED sensor
2 -8
II Composition/Operation
B. Conveyance drive
df603to2009c
[1]
[2]
[1] Flapper [2] Gate solenoid (SD303)
df603to2010c
[2]
[1]
[1] Conveyance roller [2] Original conveyance motor (M301)
II Composition/Operation registration roller [1] to be conveyed to the conveyance roller [2] at a high speed. A specified period of time after the original conveyance sensor (PS308) [4] turns ON, the conveyance roller [2] is switched into the scan speed to convey the original onto the slit glass (original scan position) [3].
The originals are read when they passes through the slit glass [5].
df603to2011c
[3] [2]
[4]
[1]
2 -10
II Composition/Operation
2.3.3 Z-fold original mode control
In the Z-fold mode, the same detection operation as that in the mixed original sizes copy mode is made on the 1st sheet of original to determine the original size. For the 2nd and succeeding originals, the normal original con-veyance is made.
2.3.4 Skew adjustment control
The original skew sensor /Rr (PS311) and the original skew sensor /Fr (PS312) are provided to make adjust-ments when the original is conveyed with its leading edge skewed. PS311 and PS312 are provided on the front side and the rear side of the conveyance path before scan to detect the amount of skew based on the time dif-ference when the leading edge of the original turns ON these sensors. The amount of skew detected is adjusted by means of image processing.
The relationship of the distance between the two sensors makes it effective only on original larger than A4R in width and the correction of the tilt angle up to 1.5°C is made.
2.3.5 Centering adjustment
The leading edge of the original pre-fed is detected by the centering sensor /Rr (PS321) and the centering LED sensor /Rr (PS322). According to the timing of this detection, the side edge of the original is detected by the centering sensor /Fr (PS320) and the centering LED sensor /Fr (PS319) to determine the effective read area in the main scan direction.
The width of the original size that can be detected is restricted only to A4 or 11 inch. However, PS320 is required to be positioned to the width of the original you want to detect.
The maximum range that can be corrected is within ± 3 mm. When in excess of this range, only 3 mm is cor-rected.
The centering adjustment control is invalid for original sizes other than A4 and 11 inch and in the mixed original mode.
The sensor can detect any color in the original.
2.3.6 Cooling fan control
To prevent the original conveyance motor (M301) from getting too hot while in operation, the motor is cooled by the cooling fan /Lt (FM301). The cooling fan turns ON when the original feed is started, and it turns OFF when the original exit is completed.
To prevent the original exit motor /1 (M304), the original exit motor /2 (M305), the RADF control board (RADFCB) and the tray up/down motor (M303) from getting too hot while in operation, these motors and board are cooled by the cooling fan /Rt (FM302).
II Composition/Operation
3.2 Drive
A. Reverse drive
df603to2016c
[1]
Symbol Item Specification/mechanism
[1] Stabilization of scan speed Pressure roller release method
— Reverse method Paper exit gate + solenoid
[1]
2 -12
II Composition/Operation
3.3 Operation
3.3.1 Reverse mechanism A. Small size original
When the gate solenoid (SD303) starts up, the flapper [3] closes and originals the front of which has been scanned are conveyed [2] to the reverse section by the reverse roller [1]. A specified period of time after the orig-inal reverse sensor (PS309) [7] turns OFF by detecting the trailing edge of the origorig-inal, SD303 opens the paper exit gate [6] and the reverse paper feed [5] is made while rotating in the reverse direction at a low speed and then at a high speed to guide the original to the conveyance roller [4].
df603to2018c
[1] Pressure roller release solenoid (SD302)
df603to2027c
[1] Reverse roller [4] Conveyance roller
[2] Conveyance to the reversal section [5] Reverse paper feed
[3] Flapper [6] Paper exit gate
[7] Original reverse sensor (PS309)
II Composition/Operation [2] by the reverse conveyance roller [9], the paper exit reverse roller [1]. At this time, the exit gate [10] is closed by the exit gate solenoid (SD304).
The originals that have been conveyed to the reversal section and the paper exit reversal section are fed in reverse [6] in the same manner as small size originals. At this time, since the originals do not yet pass through the reverse roller [8], the reverse conveyance roller [9] even if they have reach the conveyance roller [7], after the reverse roller makes the reverse rotation, the pressure roller release solenoid (SD302) activates to release the pressure roller [3] for the reverse roller. The originals are released from the pressure roller and guided to the con-veyance roller [7].
df603to2028c
[9]
[8] [10]
[3]
[1]
[6] [5] [4]
[7]
[2]
[1] Paper exit reverse roller [6] Reverse feed
[2] Conveyance to the paper exit reversal section [7] Conveyance roller
[3] Pressure roller [8] Reverse roller
[4] Conveyance to the reversal section [9] Reverse conveyance roller
[5] Flapper [10] Exit gate
2 -14
II Composition/Operation
nal exit motor /2 (M305) and the original exit motor /1 (M304). M305 and M304 start a reverse rotation [3] to let the original hit against the conveyance roller for registration.
For the original that has been registered, a specified period of time after the original conveyance sensor (PS308) turn ON [4], the back of the 1st original is read [5].
Front face of the 1st sheet of original Reading of the front face of the 1st sheet of original
[5] Reading of the rear face of the 1st sheet of original
[6] Front face of the 2nd sheet of original [3]
[4]
Reversal of the 1st sheet of original Rear face of the 1st sheet of original
[7] Reading of the front face of the 2nd sheet of original
II Composition/Operation the original hit against the conveyance roller for registration.
For the back of the original that has been registered, a specified period of time after the original reverse sensor (PS309) turns ON, the pressure release roller solenoid (SD302) is turned ON [4] to release the pressure roller, and then release the conveyance force of the reverse section. A specified period of time after the original con-veyance sensor (PS308) turns ON [5], the back of the 1st original is read [6].
[3] [4]
2 -16
II Composition/Operation
A. Paper exit section (large size)
B. Paper exit section (small size)
df603to2022c
[1]
Symbol Item Specification/mechanism
[1] Conveyance path switching method Paper exit gate + solenoid
Symbol Item Specification/mechanism
[1] Conveyance path switching method Paper exit gate + solenoid
df603to2023c
[1]
II Composition/Operation
B. Paper exit drive (for large size)
df603to2024c
[1]
[2]
[1] Exit gate [2] Exit gate solenoid (SD304)
[1]
2 -18
II Composition/Operation
df603to2026c
[1]
[2]
[1] Original exit motor /2 (M305) [3] Paper exit roller /2 [2] Paper exit reverse roller
II Composition/Operation (1) Single sided original
The originals that have been scanned are conveyed to the reversal section [3] because of the gate solenoid (SD303) being closed by the flapper [4]. The originals conveyed to the reversal section are conveyed to the exit gate [7] by the reverse roller [5], the reverse conveyance roller [6]. After that, they are conveyed to the paper exit roller /2 [1] through the exit gate [7] that has been opened by the exit gate solenoid (SD304). The paper exit roller /2 [1] exits the originals to the original exit tray (for small size) [2] with their copied side down.
df603to2029c
[6]
[5] [1]
[2]
[4] [3] [7]
[1] Paper exit roller /2 [4] Flapper
[2] Exits the originals to the original exit tray (for small size)
[5]
[6]
Reverse roller
Reverse conveyance roller [3] Conveyance to the reversal section [7] Exit gate
2 -20
II Composition/Operation
nal reverse/exit sensor (PS313) [4] of the paper exit reversal section detects the originals, the paper exit reverse roller [3] stops. When SD304 opens the exit gate [5], the paper exit reverse roller [3] starts to make a high speed reverse rotation to send back the conveyed originals. At this time, the exit gate [5] is open and the originals are exited to the original exit tray (for small size) [1] with their front face down.
df603to2030c
[6]
[5] [1]
[2]
[4]
[3]
[1] Exits the originals to the original exit tray (for small size)
[4]
[5]
Original reverse/exit sensor (PS313) Exit gate
[2] Conveyance to the paper exit reversal section [6] Paper exit roller /2 [3] Paper exit reverse roller
II Composition/Operation paper exit roller /1 [2] makes a low speed normal rotation to exit the originals to the original exit tray (for large size) [1] with their copied face down.
(2) Double sided original
The originals the rear face of which has been scanned are conveyed to the reversal section [2] because of the flapper [4] being closed by the gate solenoid (SD303). When the original reverse sensor (PS309) [3] detects the trailing edge of the originals conveyed, SD303 opens the flapper [4] and the paper exit gate. The originals are exited to the original exit tray (for large size) [1] by the paper exit roller /1 [6] through the flapper that is open.
df603to2031c
[1]
[5]
[2]
[4] [3]
[1] Exits the originals to the original exit tray (for large size)
[3]
[4]
Flapper Conveyance roller [2] Paper exit roller /1
[1]
[5] [6]
2 -22
II Composition/Operation
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