Epson Stylus CX4900 Service Manual page 35

EPSON Stylus CX4900/CX4905/CX5000/DX5000/DX5050/CX5900/CX6000/DX6000/DX6050
Basic specifications for scanning of index sheets
Scanning rules for index sheet
The existence of the following recognition factors is judged using the image
pattern matching. (Image is binary.)
Table 1-33. Symbols Check
Position mark Image
Reference point for
Left and right edges (1 each)
index marks
Sheet information
Block codes (30)
(memory card ID, page)
Determines whether or
Image marks (30 x 3)
not to print pixel
Paper type/Paper size (6) Select paper
Layout (2) Select layout
Date format Date format On/Off
• The marks can be recognized if 50% or more portion of each of them is
filled.
• For running out and excessive marking out, the two white/black search
patterns shown above are superimposed on the mark, and judgment is made
according to this matching ratio.
• The judgment criteria is as follows: Black matching: 80% or more White
matching: 50% or more.
<Marking example>
• If in accordance with the search rule, judgment is made as shown below.
OK
NG
PRODUCT DESCRIPTION
Description Remarks
NG if dirty (not scannable)
NG if dirty (not scannable)
Use at least one of these
marks
NG if dirty (not scannable)
NG if dirty (not scannable)
Optional
OK OK
NG
Errors during scanning or printing of index sheets
• Stops scanning and returns to the menu screen if the card is removed while
an index sheet is being scanned or printed.
• Index sheet error 1 (No index sheet) is displayed if the sheet cannot be
scanned because it is dirty, set backwards, etc.
• Index sheet error 2 (Incorrect marking) is displayed if the image bubbles
cannot be read because they are not filled in correctly.
• Index sheet error 3 (Incorrect card) is displayed if, after printing an index
sheet, you try to print from a non-matching memory card, such as a different
(replacement) card or a re-edited version of the same card.
NOTE: For error display, refer to
Memory Card Print
Revision A
Figure 1-59 (p62)
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