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Document Size Detection
Detailed Descriptions
Detailed Descriptions
Detailed Descriptions
In this MFP, for document size detection, two reflecting sensors are used for the sub scanning direction, and a CCD is used for the main scanning direction.
Sub scanning direction
The document size is detected by ON/OFF of the sensor. The pressure plate open/close sensor is used for document size detection timing. When the pressure plate open/close sensor has changed from "no cover" to "cover," the size is detected.
Main scanning direction
RGB color densities at 3 locations (S1, S2, S3) are detected by a CCD, and when any of the RGB densities is 12 digits or more, it is determined that a document is present.
The pressure plate open/close sensor is used for document size detection timing. When the pressure plate open/close sensor detects "no cover," the scanner lamp is moved to the right; when it detects "cover," the scanner lamp is moved to home position while lit, and during this time, the size is read.
Document size | Sensor response | ||||||
Size | Direction | Dimensions (main × sub) | S1 | S2 | S3 | L1 | L2 |
A3 | SEF | 297x420 | - | - |
|
|
|
B4 | SEF | 257x364 | - |
| - |
|
|
A4 | SEF | 210x297 |
| - | - |
| - |
A4 | LEF | 297x210 | - | - |
| - | - |
B5 | SEF | 182x257 | - | - | - |
| - |
B5 | LEF | 257x182 |
| - | - | - | |
Scanning
Document size | Sensor response | ||||||
A5 | SEF | 148x210 | - | - | - | - | - |
A5 | LEF | 210x148 |
| - | - | - | - |
B6 | SEF | 128×182 | - | - | - | - | - |
B6 | LEF | 182×128 | - | - | - | - | - |
DLT | SEF | 11"×17" | - | - |
| - |
|
10×15 | SEF | 10"×15" | - |
| - | - |
|
USB4 | SEF | 10"×14" | - |
| - | - |
|
LG | SEF | 8 1/2"×14" |
| - | - | - |
|
Oficio | SEF | 8 1/2"×13.4" |
| - | - | - |
|
Foolscap | SEF | 8 1/2"×13" |
| - | - | - |
|
Folio | SEF | 8 1/4"×13" |
| - | - | - |
|
F | SEF | 8"×13" |
| - | - | - |
|
LT | SEF | 8 1/2"×11" |
| - | - |
| - |
LT | LEF | 11"×8 1/2" | - | - |
| - | - |
8×10 | SEF | 8"×10" |
| - | - |
| - |
10×8 | LEF | 10"×8" | - |
| - | - | - |
Executive | SEF | 7 1/4"×10 1/2" | - | - | - |
| - |
HLT | SEF | 5 1/2"×8 1/2" | - | - | - | - | - |
HLT | LEF | 8 1/2"×5 1/2" |
| - | - | - | - |
8kai | SEF | 267×388 | - |
| - | - |
|
16kai | SEF | 194×267 | - | - | - |
| - |
16kai | LEF | 267×194 | - |
| - | - | - |
Scanning
Detailed Descriptions
Detailed Descriptions
Detailed Descriptions
The document width (main scanning direction) is detected by the sensor indicated with 
’.
How to check the sensor state
SP4-301 (Operation Check APS Sensor)
How to read the screen (7)00000000(0)
0: no document
1: document present
When the sensor responds, bit 0 is displayed as "1."
SP4-310 (Scan Size Detect Value)
Viewed from the control panel, labeling positions from rear to front S1-S3 in that order, the RGB density at each position is displayed in digit units (the value just before scan is displayed).
Other
SP4-303 (Min Size for APS)
Sets the display when non-standard (small size) size original is detected. 0: Display message "Original size unknown".
1: Operate assuming the original size is A5 LEF (HLT LEF for inches).
SP4-305-001(8K/16K Detection)
By changing this SP, you can change between A4 size/letter size or Chinese paper size (8×16).
0: Normal setting. (Default)
1: When detecting A4/LT size -> Assume that it is A4 when SEF, LT when LEF. 2: When detecting A4/LT size -> Assume that it is LT when SEF, A4 when LEF. 3: Change to 8K/16K settings.
A3, B4 -> 8K LEF
A4 LEF, B4 LEF, A5 LEF -> 16K LEF A4 SEF, B4 SEF, A5 SEF -> 16K SEF
SP5-126 (Set F-size Document)
Selects the paper size for the F-size original.
0: When detecting Foolscap -> Assume that the size is 8 1/2"x13". (Default) 1: When detecting Folio -> Assume that the size is 8 1/4"x13".
2: When detecting F -> Assume that the size is 8"/13".
SP4-308 (Scan Size Detection)
Sets CCD original size detection and APS original size detection. 0: Disable: Not detect original size
1: Enable: Detect original size by the CCD unit
2: APS: APS sensor is used for detecting original size.
