hi, you can print only customer names.for that you can do the following steps:

create two mxl files named "partner_address.xml" and "res_partner_report.xml"

1.partner_address.xml

<?xml version="1.0" encoding="ISO-8859-1"?>
<addresses>
    <address type="fields" name="name">
        <company-name type="field" name="name"/>
    </address>
</addresses>

put it in the path "your_module/report/partner_address.xml"

2.res_partner_report.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>
        <report id="res_partner_address_report1" model="res.partner" name="res.partner.name" string="Partner name" xml="your_module/report/partner_address.xml"/>
    </data>
</openerp>

put it in the path "your_module/res_partner_report.xml" and add this in the __openerp.py file.

upgrade the module and print it in the customer

Hi Bruce

You don't have this kind of report with official source code.

I think this addon will help you http://www.zbeanztech.com/sites/default/files/web_printscreen_zb_16_jan.zip

You'll able to print any tree view.