I can´t get images on each line of a quotation PDF report to show. 
The steps i went through are:
- Active the developer mode (the bettle is shown)
- Navigate to Sales > Studio > Reports
- Choose sale.report_saleorder_raw or sale.report_saleorder
- Add a column next to Description
- In the new column: Insert Field > Product product_id (many2one) > Arrow > Image Image_128 (binary)
- Save
This is the code generated:
<data>
<xpath expr="/t[@t-name='sale.report_saleorder_document']//t[@t-call='web.external_layout']//th[@name='th_description']" position="before" meta-name="th_description" meta-class="text-start">
<th>
<div>Imagen</div>
</th>
</xpath>
</data>
<data>
<xpath expr="/t[@t-name='sale.report_saleorder_document']//t[@t-call='web.external_layout']/div/table/tbody/t[4]/t[10]/tr[@name='tr_section']/t[3]" position="after" meta-t-if="not show_section_total">
<td>
<p>
<span data-oe-demo="Imagen 128" t-field="line.product_id.image_128" t-options-widget="'image'" t-options-qweb_img_raw_data="1"/>
</p>
</td>
</xpath>
</data>
