This is my report and it's working fine, but if I remove  

<t t-call="web.external_layout" my barcode stop generating. i just have blank line there. I can't use

external_layout because its have logo and other companys information. 

<odoo>
    <record model="report.paperformat" id="paperformat_label_inc_report">
        <field name="name">paperformat.label.inc.report"</field>
        <field name="default" eval="True"/>
        <field name="format">custom</field>
        <field name="page_height">58</field>
        <field name="page_width">30</field>
        <field name="orientation">Landscape</field>
        <field name="margin_top">0</field>
        <field name="margin_bottom">0</field>
        <field name="margin_left">0</field>
        <field name="margin_right">0</field>
        <field name="header_line" eval="False"/>
        <field name="header_spacing">0</field>
        <field name="dpi">90</field>
    </record>

    <report id="income_rep"
            model="stock.move"
            string="Print incoming label"
            report_type="qweb-pdf"
            name="config_trikdis.label_incom_rep"
            paperformat="paperformat_label_inc_report"
            menu="False"/>


    <template id="config_trikdis.report_call_document">
        <t t-call="web.external_layout">
            <div>
                <img t-att-src="'/report/barcode/?type=%s&amp;value=%s&amp;width=%s&amp;height=%s' % ('Code128', o.product_id.default_code, 500, 100)"  style="width:500px;height:100px;margin-left: -80px;"/>
                <div>
                    <strong><span t-esc="o.product_id.default_code" style="display: inline-block; width: 100%;font-size:30px;"/></strong>
                    <span t-esc="o.name" style="display: inline-block; float: left;font-size:30px;"/>
                </div>
            </div>
        </t>
    </template>

    <template id="config_trikdis.label_incom_rep">
        <t t-call="web.html_container">
            <t t-foreach="docs" t-as="o">
                <t t-call="config_trikdis.report_call_document" t-lang="o.company_id.partner_id.lang"/>
            </t>
        </t>
    </template>
</odoo>