Read Sharp AR-C170 (serv.man24) Service Manual online
AR-C170M DESCRIPTIONS OF EACH SECTION 7 - 42
b. Operation process
[Duplex document]
c. Document size detection
<1> The document size is detected on the document set tray.
When a document is set on the document set tray with the
paper/copy magnification ratio set in the auto mode, the doc-
ument size is detected to operate the automatic selection
function of paper and copy magnification ratio for the docu-
ment size. When different sizes of documents are set in this
detection method, the max. size of document is detected.
paper/copy magnification ratio set in the auto mode, the doc-
ument size is detected to operate the automatic selection
function of paper and copy magnification ratio for the docu-
ment size. When different sizes of documents are set in this
detection method, the max. size of document is detected.
The document width is detected with the document width
sensors (W1, W2, and W3), and the document length is
detected with the document length sensors (L1 and L2) to
determine the document size. Judgment of the document
size is made at a timing after detecting the document with the
document set sensor (W0).
sensors (W1, W2, and W3), and the document length is
detected with the document length sensors (L1 and L2) to
determine the document size. Judgment of the document
size is made at a timing after detecting the document with the
document set sensor (W0).
[Note] Sensor: ON:
❍
OFF:
●
Don't case: —
1)
Document set (Document set sensor ON)
↓
2)
Document size detection (Detects the document width with
the document width sensors W1, W2, and W3 and the
document length with the document length sensors L1 and
L2.)
the document width sensors W1, W2, and W3 and the
document length with the document length sensors L1 and
L2.)
↓
3)
Complex unit copy key ON
↓
4)
RSPF motor ON
↓
5)
Pickup solenoid ON
↓
6)
Pickup roller and paper feed roller rotation
↓
7)
The paper entry sensor detects presence of a document.
↓
8)
PS roller rotation
↓
9)
Copy operation (Document surface)
↓
10) Transport roller rotation
↓
11) Paper exit roller rotation
↓
12) The paper exit gate moves down. (The document is passed
to the intermediate tray.)
↓
13) The reverse gate moves down.
↓
14) Paper exit roller reverse rotation (The document is passed to
the reverse path.)
↓
15) The paper entry sensor detects presence of a document.
↓
16) PS roller rotation
↓
17) Copy operation (Document back surface copy)
↓
18) Transport roller rotation
↓
19) Paper exit roller rotation
↓
20) The paper exit gate moves down. (The document is passed
to the intermediate tray.)
↓
21) The reverse gate moves down.
↓
22) Paper exit roller reverse rotation (The document is passed to
the reverse path.)
↓
23) The paper entry sensor detects presence of a document.
↓
24) PS roller rotation
↓
25) Paper exit roller rotation
↓
26) The paper exit gate moves up.
↓
27) The document is passed to the paper exit tray.
↓
28) Next document
→
(YES)
→
Returns to 4).
↓
(NO)
29) RSPF motor OFF
Document
width sensor
Document
width sensor
AB series
Inch series
W1
W2
W3
L1
L2
●
●
●
●
●
B5R
8.5 x 11R
❍
●
●
●
●
A5
5.5 x 8.5
—
❍
●
●
●
B5
8.5 x 11
—
—
❍
●
●
A4
8.5 x 11
●
●
●
❍
●
B5R
8.5 x 11R
❍
●
●
❍
●
A4R
8.5 x 11R
—
❍
●
❍
●
B4
11 x 17
—
—
❍
❍
●
A3
11 x 17
●
●
●
—
❍
B5R
8.5 x 14
❍
●
●
—
❍
A4R
8.5 x 14
—
❍
●
—
❍
B4
11 x 17
—
—
❍
—
❍
A3
11 x 17
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