Epson Stylus DX4850 Service Manual

EPSON Stylus CX4100/CX4200/CX4700/CX4800/DX4200/DX4800/DX4850 Revision A
PRODUCT DESCRIPTION Memory Card Print (Only for CX4700/CX4800/DX4800/DX4850) 39
 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.)
• When two or three marks of one image are filled, larger number will be used
for the number of copies. (ex. 1 and 3 are filled, number of copies is 3.)
• When the optional “ALL” mark is filled, all images in the sheet will be
printed one by one regardless of each image mark is filled or not.
• Index sheet error will be caused when any of image mark or “ALL” mark is
not filled.
• Index sheet error will be caused when “Left and right edges”, “Right top
EPSON” and “Block codes” are not found correctly due to something like
smear.
• Place the index sheet so that the “Left top triangle” can meet the left top
corner of the scanner.
<OK/NG mark samples>
• 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.
 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 (No index sheet) is displayed if the sheet cannot be
scanned because it is dirty, set backwards, etc.
• Index sheet error (Incorrect marking) is displayed if the image bubbles
cannot be read because they are not filled in correctly.
• Index sheet error (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.
Figure 1-15. Symbols Check
Table 1-38. Symbols Check
Position mark Image Description Remarks
Left and right edges (1 each)
Reference point for
index marks
NG if dirty (not scannable)
Block codes (30)
Sheet information
(memory card ID, page)
NG if dirty (not scannable)
Image marks (30 x 3)
Determines whether or
not to print pixel
Use at least one of these
marks
Paper type/Paper size (6) Select paper NG if dirty (not scannable)
Layout (2) Select layout NG if dirty (not scannable)
Date format Date format On/Off Optional

Epson Stylus DX4850 Specifications

General

Brand	Epson
Model	Stylus DX4850
Category	Printer
Language	English