Standard Operating Procedure: PDF Quality Control Review

Department: Customer Service / Pre-Press
Company: West Essex Graphics
Duration: ~21 minutes per review
Last Updated: January 2026


Overview

This SOP covers the complete QC process for reviewing customer packaging PDFs before sending to print. The review ensures all specifications match printer requirements and customer-supplied data.


Required Documents

Before starting, gather:
☐ Printer Spec Card (traps, bar width reduction, printer marks)
☐ Customer Packaging Spec Sheet
☐ Nutrition Facts source file (.xls)
☐ Ingredient Copy source file (.xls)
☐ Customer's original artwork PDF


QC Checklist Summary

Check Specification Status
Color Correction Remove cyan from bread/food images
Artwork Comparison Match customer-supplied file (minus approved changes)
UPC Number Match spec sheet exactly
Bar Width Reduction Per printer spec (e.g., .004 / 0.1mm)
UPC Magnification Per printer spec (e.g., 100%)
Nutrition Facts All values match source spreadsheet
Ingredient Copy Spelling, punctuation, order correct
Allergen Statements Spelling correct, all required statements present
Traps Match printer spec (e.g., 0.015")
White Cutbacks Match printer spec (e.g., 0.015")
Die Line Dimensions Match spec sheet
Eye Spot Size and placement per printer spec
Micro Dots Minimum 3, correct size, all colors present
WEG Box Customer, job name, printer, dimensions, colors

Procedure

Section 1: Initial Setup

Step 1.1: Open the printer spec card

Printer Spec Card

Review and note:
- Trap specifications
- Bar width reduction value
- Required printer marks

Step 1.2: Open the customer packaging spec sheet

Customer Spec Sheet

This contains all customer-requested changes and specifications.


Section 2: Color Correction Verification

Step 2.1: Turn on process color separations in your viewer

Process Colors

Step 2.2: Verify cyan removal from food images

Toggle through CMYK channels:
- Cyan should be minimal/removed from bread, baked goods
- Check pineapple, bread, and other food photography

Cyan Removed

Step 2.3: Confirm Magenta, Yellow, and Black are present and correct

Color Channels


Section 3: Artwork Comparison

Step 3.1: Open customer's original supplied artwork

Step 3.2: Use compare/overlay tool to check differences

Artwork Comparison

Step 3.3: Verify only approved changes exist:
- Pre-press specs applied (expected difference)
- Customer-requested copy changes
- Barcode replacements

Step 3.4: Document any unexpected differences


Section 4: UPC/Barcode Verification

Step 4.1: Locate UPC number on spec sheet

UPC Spec

Step 4.2: Zoom in on barcode in artwork

UPC Closeup

Step 4.3: Verify number matches exactly
- Compare digit by digit
- Flag any discrepancies immediately

Step 4.4: Check bar width reduction

Bar Width Check

Step 4.5: Verify magnification is correct (e.g., 100%)


Section 5: Nutrition Facts Verification

Step 5.1: Open nutrition facts source spreadsheet

Nutrition Source

Step 5.2: Compare each value line by line:

Field Check
Servings per container Number matches
Serving size Weight and measurement
Calories Value correct
Total Fat Grams and % DV
Saturated Fat Grams and % DV
Trans Fat Value present/correct
Cholesterol mg and % DV
Sodium mg and % DV
Total Carbohydrates Grams and % DV
Dietary Fiber Grams and % DV
Total Sugars Grams
Added Sugars Grams and % DV
Protein Grams
Vitamin D mcg and % DV
Calcium mg and % DV
Iron mg and % DV
Potassium mg and % DV

Nutrition Panel

Step 5.3: Flag any discrepancies for correction


Section 6: Ingredient Copy Verification

Step 6.1: Open ingredient copy source file

Ingredient Source

Step 6.2: Read through word-by-word comparing to artwork

Ingredient Check

Check for:
- Correct spelling of all ingredients
- Proper punctuation (commas, spaces)
- Ingredients in correct order
- No extra spaces or gaps between words

Step 6.3: Verify allergen statements

Allergen Statement

Step 6.4: Check text formatting
- No excessive gaps between words
- Consistent spacing throughout


Section 7: General Artwork Review

Step 7.1: Scan entire artwork for visual issues

Artwork Review

Check for:
- Registered trademark symbols (®) present where needed
- Spelling errors in marketing copy
- Missing elements
- Correct product name spelling

Step 7.2: Document any issues found


Section 8: Trap Verification

Step 8.1: Review trap specifications from printer spec card
- Standard trap width (e.g., 0.015")
- White cutback value

Step 8.2: Turn off die line layer

Trap Setup

Step 8.3: Use measurement tool to verify trap widths

Measuring Traps

Step 8.4: Toggle color separations on/off to check for:
- Consistent trap widths
- No gaps or leaks between colors
- Proper cutbacks where needed

Trap Check

Step 8.5: Check areas where traps may need splitting
- Small areas may need half-width traps
- Colors butting against each other need overlap

Step 8.6: Identify any missing traps

Missing Trap

Document specific color combinations and locations.


Section 9: Die Line Verification

Step 9.1: Reference die dimensions from spec sheet

Step 9.2: Measure all critical dimensions:

Die Measurement

Dimension Expected Actual Pass/Fail
Width
Height
Gusset
Lip
Wicket hole placement

Step 9.3: Verify no-print areas

No Print Areas


Section 10: Eye Spot Verification

Step 10.1: Locate eye spot specification

Eye Spot Spec

Step 10.2: Measure eye spot dimensions
- Width (e.g., 1")
- Height (e.g., 0.25")

Step 10.3: Verify placement
- Distance from lip edge
- Distance from bag bottom
- Centered on bag

Eye Spot Measurement


Section 11: Micro Dot Verification

Step 11.1: Locate micro dots on artwork

Micro Dots

Step 11.2: Verify size matches spec (e.g., .013")

Micro Dot Size

Step 11.3: Count micro dots (minimum 3 required)

Step 11.4: Scan for colors - verify all printing colors appear in micro dots

Micro Dot Colors


Section 12: WEG Box Verification

Step 12.1: Locate WEG info box at bottom of artwork

WEG Box

Step 12.2: Verify all fields:

Field Check
Customer name Correct
Job name/number Matches order
File number WEG internal number
Date Last revision date
Revision count Accurate
Printer name Correct facility
Die dimensions Match actual die
Stepping/Distortion (Verify at TIFF stage)
Barcode magnification Matches spec
Bar width reduction Matches spec
Barcode color Correct PMS/process
Barcode number Matches artwork
Color list All colors present

Color List


Section 13: Complete Review

Step 13.1: Compile all corrections needed

Step 13.2: Enter corrections into Hybrid system

Step 13.3: Send back to artist for corrections

Step 13.4: Schedule second QC check when corrections returned


Errors Found in This Review

Issue Location Details
UPC Number Incorrect Barcode Should be ending in 1302-4
Sodium Value Wrong Nutrition Facts Shows 125mg, should be 100mg/4%
"Wheat" Misspelled Ingredients In "wheat gluten"
Missing Comma Ingredients Between "oil" and "salt"
"Cherry" Misspelled Ingredients Missing "r" in "cherry powder"
"Sesame" Misspelled Allergen Statement Misspelled in both locations
Text Gaps Ingredients Excessive spacing between words
"Hawaiian" Misspelled Front Panel Missing an "i"
Missing Trap Artwork Between Teal 315 and Brown 476
Eye Spot Size Wrong Eye Spot Shows 0.347", should be 1"
Eye Spot Position Wrong Eye Spot 0.5" from bottom, should be 0.25"

Sign-Off

Role Name Date Signature
QC Reviewer
Artist (Corrections)
QC Second Check
Customer Approval

Document generated from video training: Screen Recording 2026-01-20