printer tray and blank separator issues

Hi,
I experience some issues with my new print queues that I created in AIX (smitty). This following print queue is dedicated to print on tray 1 and the user have to put the paper manually, the jobs should be executed without separator page.
But when we print on this queue, the job is executed on tray 2 and automatically () and we have one blank page as separator between the jobs.
Here is the configuration of my print queue from smitty:

Print Spooling
AIX Print Spooling
Change / Show Print Queue Characteristics
1 Printer Setup
Print queue name Printq1
Printer name hp@printest1
POSTSCRIPT option INSTALLED? no +
AUTOMATIC detection of print file TYPE to be done? yes +
PAPER SIZE for standard 250-sheet cassette letter +
PAPER SIZE for multipurpose tray letter +
PAPER SIZE for optional 500-sheet lower cassette letter +
PAPER SIZE for manual paper feed letter +
ENVELOPE SIZE for multipurpose tray 10 +
ENVELOPE SIZE for optional envelope feeder 10 +
ENVELOPE SIZE for manual envelope feed 10 +
Input PAPER TRAY for header page multipurpose tray 1 +
Input PAPER TRAY for trailer page multipurpose tray 1 +
FORMATTING FLAGS for header page []
FORMATTING FLAGS for trailer page []
USERS to get intervention messages []
FLAGS PROHIBITED for all print files []
Default VERTICAL SPACING (lines per inch) 6 +
WIDTH of printable area on header page [77] +#

Here is Print job configuration:

2 Default Print Job Attributes
Print queue name Printq1
Printer name hp@printest1
-------------- Text Print Options -------------
TYPESTYLE and PITCH courier 10 +
Print QUALITY 300 +
----------- Job Processing Options ------------
PAGE NUMBER where printing should begin [1] +#
Print file TYPE p +
Pre-processing FILTER NAME [] +
INITIALIZE printer? full initialization +
RESTORE printer? yes +
----------- Text Formatting Options -----------
TOP MARGIN (lines) [0] +#
BOTTOM MARGIN (lines) [0] +#
Number of columns to INDENT [0] +#
WRAP long lines? yes +
Add LINE FEED or CARRIAGE RETURN LF->CRLF VT->CRVT +
CODE PAGE of print file [ISO8859-1] +
TITLE STRING for 'pr' filter []
LINES per page [60] +#
COLUMNS per page [80] +#
------------- Paper/Page Options --------------
Page ORIENTATION portrait +
Input PAPER SOURCE multipurpose tray 1 +
PAPER SIZE override for input paper source letter +
DUPLEX output simplex (single-sided) +
--------- Header/Trailer Page Options ---------
SEPARATOR PAGES none +
HOSTNAME for "PRINTED AT:" on HEADER PAGE []
------------- Messages/Diagnostics ------------
DIAGNOSTIC LEVEL (normal) - print job; exit if filters produce stderr +

Have you any idea to fix this issue? to be able to print on tray 1 and without blank separator page.
Thanks a lot

Hi,
here is a solution to prevent form feed after each print job.

chvirprt -q<queue> -d<queuedev> -a _Z=!

But I'm not able to print on tray 1. I run this command:
chvirprt -q Printq1 -d hp@printest1 -a _u=1

and I get this result for this print queue

lsvirprt -q Printq1 -d hp@printest1 -a _u

Name Description Value
_u Input PAPER SOURCE 1

But it prints on tray2, my goal is to be able to print on tray 1 and I
have to put the papers manually.

Any suggestions?

Thanks a lot.