Epson Stylus Photo R290, Service Manual, Page: 26 / 125

EPSON Stylus Photo R280/R285/R290 Revision B
Chapter 2 Operating Principles 2.3 Banding Reduction System (BRS) / Paper Feed Amount Profile Correction (PFP) 26
2.3 Banding Reduction System (BRS) / Paper Feed Amount Profile Correction (PFP)
† Overview
In order to ensure high print quality and high print speed, this product incorporates the Banding Reduction System (BRS) and Paper Feed Profile (PFP) Correction system. The
overview of them is described in the table below.
† Adjustment/Correction method
Correction values of the BRS and the PFP are automatically calculated when a pattern printed by the printer is scanned by a specified scanner. The created correction
values are stored into the serial flash ROM on the main board, and applied when printing in the target print mode.
Table 2-6. Overview of BRS and PFP
Summary
Target Print Mode
Remarks
Paper Type Paper Size Resolutions (dpi)
BRS
Conventional models perform overlapping printing (2-path or 4-
path print) to reduce banding problem. Printers that incorporate the
Banding Reducing System do not perform the overlapping printing.
They carry out 1-path printing correcting ink drop amount for each
raster mode in order to avoid making a gap between each path
(printed line). This enables to achieve both high print quality (less
banding) and high print speed.
Ultra Glossy Photo Paper
Premium Glossy Photo Paper
Glossy Photo Paper
Premium Semigloss Photo Paper
4 x 6 inch
(102 x 152 mm)
720 x 720 ---
PFP
In the conventional method to improve paper feed accuracy, the
adjustment value is calculated based on a value obtained at a
certain point of paper. Therefore, correcting the total paper feed
amount (from when paper is fed and to when finishing printing)
was impossible. The Paper Feed Amount Profile Correction offers
more precise control over the paper feeding. Paper feed errors are
measured at various points and a correction value is calculated for
each of the points. This enables to ensure print quality in the target
print mode.
Ultra Glossy Photo Paper
Premium Glossy Photo Paper
Glossy Photo Paper
Premium Semigloss Photo Paper
4 x 6 inch
(102 x 152 mm)
720 x 720 With BRS, Borderless print
720 x 360
Without BRS,
Borderless print
A D J U S T M E N T
R E Q U I R E D
For information on how to carry out the BRS and PFP,
See
Chapter 5 Adjustment .