Sharp MX-RP19 Service Manual ▷ View online
MX-RP19 N OPERATIONAL DESCRIPTIONS 6 – 1
MX-RP19 N
Service Manual
[6] OPERATIONAL DESCRIPTIONS
1. Outline
2. Document size detection
Size detection on the document tray
The document width is detected by the document width sensor
(SPWS), and the document length is detected by the document
length sensors (SPLS1, SPLS2). The document size is judged from
the document width and the document length as shown in the table
below.
When, however, mixed sizes of documents are loaded on the tray,
the maximum size is detected.
The document width is detected by the document width sensor
(SPWS), and the document length is detected by the document
length sensors (SPLS1, SPLS2). The document size is judged from
the document width and the document length as shown in the table
below.
When, however, mixed sizes of documents are loaded on the tray,
the maximum size is detected.
The document scanning mode is available in 400dpi and 600dpi.
No.
Name
Function/Operation
1
Document length sensor (L2)
Detects the length of the paper on the tray.
2
Document length sensor (L1)
Detects the length of the paper on the tray.
3
Document pickup roller (RSPF)
Feeds a document to the paper feed roller.
4
Paper feed roller (RSPF)
Feeds a document to the transport section. Makes a warp on paper between the registration
roller and this roller to correct the start position of document skew and document image scan.
roller and this roller to correct the start position of document skew and document image scan.
5
Separation roller (RSPF)
Separates a document to prevent double-feeding.
6
Transport auxiliary roller (RSPF)
Reduces friction between a document and the paper guide to transport the document smoothly
to the registration roller.
to the registration roller.
7
Registration roller (Drive) (RSPF)
Transports a document to the transport roller 2. / Controls the transport timing of the document
and adjusts the document scanning timing.
and adjusts the document scanning timing.
8
Registration roller (Idle) (RSPF)
Apply a pressure to a document and the registration roller to provide the transport power of the
transport roller to the document.
transport roller to the document.
9
Transport roller 2 (Idle) (RSPF)
Apply a pressure to a document and the transport roller to provide the transport power of the
transport roller to the document.
transport roller to the document.
10
Transport roller 2 (Drive) (RSPF)
Transports a document transported from the registration roller to the document scanning section.
11
Transport roller 3 (Idle) (RSPF)
Apply a pressure to a document and the transport roller to provide the transport power of the
transport roller to the document.
transport roller to the document.
12
Transport roller 3 (Drive) (RSPF)
Transports a document transported from the document scanning section to the paper exit roller.
13
Paper exit roller (Idle) (RSPF)
Apply a pressure to a document and the paper exit roller to provide the transport power of the
paper exit roller to the document.
paper exit roller to the document.
14
Paper exit roller (Drive) (RSPF)
Discharges a document. Switchbacks the document and transports it to the registration roller
when scanning the back surface.
when scanning the back surface.
Document size
Document length sensor
SPLS1
SPLS1
SPLS2
AB series
A3
ON
ON
B4
ON
ON
A4
OFF
OFF
A4R
ON
OFF
B5
OFF
OFF
B5R
ON
OFF
A5
OFF
OFF
Inch series
11" x 17"
ON
ON
8.5" x 14"
ON
ON
8.5" x 13.5"
ON
ON
8.5" x 13.4"
ON
ON
8.5" x 13"
ON
ON
8.5" x 11"
OFF
OFF
8.5" x 11"R
ON
OFF
5.5" x 8.5"
OFF
OFF
Resolution
Document transport speed
400dpi
186mm/sec
600dpi
124mm/sec
3073
30,3
30,3
MX-RP19 N OPERATIONAL DESCRIPTIONS 6 – 2
3. Paper feed and transport operations
A. Single face scanning
a. Paper feed operation
The motor is turned ON and the power of the paper feed clutch is
transmitted to the pickup roller and the paper feed roller.
The pickup roller descends to pickup the top document and feed it
to the paper feed roller.
The paper feed roller feeds a document to the transport section.
At that time, the document is separated by the separation roller to
prevent double-feeding.
The motor is turned ON and the power of the paper feed clutch is
transmitted to the pickup roller and the paper feed roller.
The pickup roller descends to pickup the top document and feed it
to the paper feed roller.
The paper feed roller feeds a document to the transport section.
At that time, the document is separated by the separation roller to
prevent double-feeding.
b. Single face scanning
The lead edge of the fed document is aligned (registration) by the
registration roller, and passed through transport roller 1 to the doc-
ument scanning section, where images are scanned.
Then the document is passed through transport roller 2 to the
paper exit roller.
The paper exit roller (drive pulley) is separated by the paper exit
roller pressure control solenoid.
When the read edge of the document passes the scanning section,
the both rollers are brought into close contact to supply the power
for paper exit.
The lead edge of the fed document is aligned (registration) by the
registration roller, and passed through transport roller 1 to the doc-
ument scanning section, where images are scanned.
Then the document is passed through transport roller 2 to the
paper exit roller.
The paper exit roller (drive pulley) is separated by the paper exit
roller pressure control solenoid.
When the read edge of the document passes the scanning section,
the both rollers are brought into close contact to supply the power
for paper exit.
1) Document set (Document empty sensor ON)
2) Paper feed start (1st sheet)
The pick-up roller descends. (The paper feed motor is booted.)
(The paper feed clutch is ON)
(The paper feed clutch is ON)
3) Registration operation (1st sheet)
(Registration clutch ON)
(When a certain time passes after turning ON the registration
clutch, the paper feed clutch is turned OFF.)
(When a certain time passes after turning ON the registration
clutch, the paper feed clutch is turned OFF.)
4) Scanning start (1st sheet)
5)
Paper feed start (2nd sheet)
6)
Scanning complete (1st sheet)/Registration operation (2nd
sheet)
(When a certain time passes after turning ON the registration
clutch, the paper feed clutch is turned OFF.)
sheet)
(When a certain time passes after turning ON the registration
clutch, the paper feed clutch is turned OFF.)
7)
Scanning start (2nd sheet)
8)
Paper exit complete (1st sheet)
9)
Scanning complete (2nd sheet)
10) Paper exit complete (2nd sheet)
11) Pick-up roller lifting up
(After completion of a job, the motor is rotated reversely at a
low speed for a certain time, the paper feed clutch is turned
ON and the pickup roller is lifted.)
low speed for a certain time, the paper feed clutch is turned
ON and the pickup roller is lifted.)
MX-RP19 N OPERATIONAL DESCRIPTIONS 6 – 3
B. Duplex scanning
a. Duplex scanning
Images on the document surface are scanned, and detection of the
rear edge of the document by sensor SPPD3 triggers the following.
That is, when the rear edge of the document passes the reverse
gate, the motor is reversed.
Due to the above operation, the paper exit roller is reversed to
switchback the document, returning it to the registration roller sec-
tion and aligning (registration) the document.
Then the motor is rotated normally to transport the document to the
scanning section, scanning images on the back surface.
To reset the page order of the documents, the following operations
are made which are triggered by the detection of the rear edge of
the document. That is, when the rear edge of the document passes
the reverse gate, the motor is reversed.
Due to the above operation, the paper exit roller is reversed to
switchback the document, returning it to the registration roller sec-
tion and aligning (registration) the document.
Then the motor is rotated normally to transport the document to the
paper exit section and discharge it.
When a duplex document is scanned, the document lead edge sec-
tion and the rear edge section intersect. At that timing OFF to make
a gap between the paper exit roller (drive) and the paper exit roller
(idle).
During the time from when the document rear edge passes the
scanning section to when it is switch backed and send to the regis-
tration roller section, the paper exit roller pressure release solenoid
is turned ON to keep the paper exit roller (drive) and the paper exit
roller (idle) in contact.
1) Document set (Document empty sensor ON)
Images on the document surface are scanned, and detection of the
rear edge of the document by sensor SPPD3 triggers the following.
That is, when the rear edge of the document passes the reverse
gate, the motor is reversed.
Due to the above operation, the paper exit roller is reversed to
switchback the document, returning it to the registration roller sec-
tion and aligning (registration) the document.
Then the motor is rotated normally to transport the document to the
scanning section, scanning images on the back surface.
To reset the page order of the documents, the following operations
are made which are triggered by the detection of the rear edge of
the document. That is, when the rear edge of the document passes
the reverse gate, the motor is reversed.
Due to the above operation, the paper exit roller is reversed to
switchback the document, returning it to the registration roller sec-
tion and aligning (registration) the document.
Then the motor is rotated normally to transport the document to the
paper exit section and discharge it.
When a duplex document is scanned, the document lead edge sec-
tion and the rear edge section intersect. At that timing OFF to make
a gap between the paper exit roller (drive) and the paper exit roller
(idle).
During the time from when the document rear edge passes the
scanning section to when it is switch backed and send to the regis-
tration roller section, the paper exit roller pressure release solenoid
is turned ON to keep the paper exit roller (drive) and the paper exit
roller (idle) in contact.
1) Document set (Document empty sensor ON)
2) Paper feed start (1st sheet)
Pick-up roller descending
3) Registration operation (1st sheet, front surface)
4) Scanning start (1st sheet, front surface)
5) After completion of scanning, the reverse follower roller is
pressed. (Solenoid ON)
6)
After stopping the operation, reversing is started.
7)
After reversing, registration operation is executed.
8)
After turning ON the PS clutch, the reverse follower roller pres-
sure is released.
sure is released.
9)
Scanning start (First sheet, back surface)
10) After completion of scanning, the reverse follower roller is
pressed.
11) After stopping the operation, reversing is started.
12) After reversing, registration operation is executed.
13) After turning ON the PS clutch, the reverse follower roller pres-
sure is released.
MX-RP19 N OPERATIONAL DESCRIPTIONS 6 – 4
14) Scanning start (Second sheet)
15) After passing the scanning section, the reverse follower roller
is pressed.
16) After discharge (First sheet), the reverse follower roller pres-
sure is released.
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