Will print out on A4 o.k. but not on 6"x4", part of image only.

Printing a photo but not getting it upto your expectation.....?? No worries just fiddle a little bit
with the printing options and keep in mind some important points that I am going to tell you....it will help:

1) RESOLUTION OF THE IMAGE TO BE PRINTED... Always keep in mind while printing a digital
printout that the resolution should be best fitted i.e. of the original photo.... if you stretch A photo too 
much or squeeze you might not get the desired result. It depends upon the DPI i.e
dots per inch that appear on the paper in the snap that you print. To get a quality print you must
make sure to select proper dpi for an image in printing. Eg. for printing a snap of 300 dpi you must choose
the image resolution as 600 dpi, but in case of professionally required image quality you can select upto 24oo dpi.

2) PRINTING PAPER ... Make sure that the paper you are using is suitable for the ink and the printer that
you are using. Certain printers specially design Photo Paper suitable for the ink used in them for eg. HP printers
do have Hp photo papers to give a good quality of image.

3) SETTINGS IN THE PRINTER... You can adjust the image quality that you want by clicking on the
Properties Option in the printer dialog box that opens when you give a print command. for eg. you can select
Economy mode for saving the ink (but this will not give a good quality image as colors to will be low),
or you can use the Bes option, as suitable for you...

So next time you Print a photo or snap of yourself make sure to remember these points and have fun.....

Good Luck!!