Service manual

1-8
2-2 Superior Features and Operation Ease
!
!!
! Print directly to Card Photo Printer CP-10
The PowerShot A20/A10’s direct print mode enables you to print out images with the dedicated Card Photo
Printer CP-10 by connecting the camera to the printer with a dedicated cable.
In the playback mode, you just select
the Print command in the Print dialog
box displayed on the LCD monitor on
the camera back. The printer will then
print the image. You control the printer
with the camera.
With a resolution of 300 x 300 dpi, the
CP-10 provides the same image quality
as Digital Printer CD-300 even though it is more compact. It also can apply a protective coating on the print
for better durability.
The print size is the same as a credit card (54 x 86 mm). This size is easy to organize and carry around. There
are various printing options: Standard, multiple (label paper), borderless print, bordered print, date
imprinting.
The printing speed is 56 sec. for a print with borders. This is the fastest in its class.
For direct prints, the camera must be able to execute at high speed the printer’s color processing which is
normally done by the driver in the PC. The camera must have a high-performance processor and the color
processing must be geared for high speed execution.
In the case of the IXY DIGITAL 300, part of the processing is executed by the camera’s digital signal
processing IC at high speed. And the CP-10 is a sublimation printer that obtains high image quality even
with color processing that is simpler than that of inkjet printers.
Since the processing must be executed at high speed, single-dimensional processing is executed instead of
three-dimensional processing. By optimizing the color characteristics of the inks used, the resulting color
reproduction is adequate for practical use.
Figure 2-8 shows the process flow for making a print. The digital signal processing IC executes this process
at high speed until the resizing step. Then the camera executes the sharpness, color conversion, and density
conversion.
!
!!
! Camera controls on the back.
The PowerShot A20/A10 has all the camera
controls (except the shutter release button) on the
back, including the Mode Dial which was hitherto
on the camera top.
This enables you to operate the camera without
looking back and forth between the top and back of
the camera. You can also easily look at the LCD
monitor at the same time.
JPEG
Pre-filter
Resize Sharpness
YCrCb-
RGB
conversion
RGB
density
conversion
Density and time
conversion
Gray balance
Heat history
compensation
Print
Processing by the camera
Processing by the printer
Fig. 2-8 Direct printing process flow.
High-quality credit
card-size
p
rint
(
54 x 86mm
)
Fi
g
. 2-7 Direct
p
rintin
g
Photo 2-1 Back of the PowerShot A20.