Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE document_sections_images (section_id VARCHAR)
TABLE: CREATE TABLE documents (document_name VARCHAR)
TABLE: CREATE TABLE documents (document_name VARCHAR, document_code VARCHAR)
TABLE: CREATE TABLE document_sections (document_code VARCHAR, section_id VARCHAR)

### Question ###
Find names of the document without any images.

### Accurate SQL ###

SELECT document_name FROM documents EXCEPT SELECT t1.document_name FROM documents AS t1 JOIN document_sections AS t2 ON t1.document_code = t2.document_code JOIN document_sections_images AS t3 ON t2.section_id = t3.section_id