What Pressure Seal Check Printing Is
Pressure seal check printing is a method of producing and mailing checks without envelopes. The check is printed on a special Z-fold sheet that folds into thirds along pre-scored lines. After folding, the edges seal under pressure using glue strips built into the stock during manufacturing. The sealed document has the recipient address on the outside fold and mails directly as its own self-contained piece.
The recipient receives a sealed document that looks like a folded mailer. They tear the perforated edges on three sides to open it and find the check and any payment detail inside. No envelope to throw away separately. No envelope to stuff at your end.
The format is also called a Z-fold check, a self-mailer check, or a pressure seal mailer. The Z-fold name refers to the fold pattern: the sheet folds at two parallel lines into a shape that resembles the letter Z when viewed from the side.
This format exists specifically for high-volume check mailing. It reduces labor, eliminates envelope costs, and speeds up the mailing cycle for operations that send large batches of checks on a regular schedule. For a full look at the different check formats available, see Types of Checks: Every Check Type and Term Explained.
How Pressure Seal Check Printing Works Step by Step
Pressure seal check printing has two distinct stages. Understanding both helps you avoid the most common setup mistakes.
Stage 1: Printing
Load your blank Z-fold pressure seal check stock into your laser or inkjet printer. The stock looks like standard 8.5 by 11 inch paper with faint fold lines and a perforated border. Feed it flat through the printer , do not pre-fold.
Your accounting software sends the print job. The software populates all the variable fields: payee name, check amount in numbers and words, payment date, account information, and the recipient mailing address. The print template must be configured to position all these fields correctly on the flat sheet so they land in the right locations after folding.
After printing, the sheet looks like a standard 8.5 by 11 inch document with check information and mailing address printed in specific zones.
Stage 2: Folding and Sealing
Run the printed sheet through your pressure seal folding machine. The machine feeds the sheet, folds it along the two pre-scored fold lines into a Z shape, and applies firm, even pressure to the edges. The pressure activates the glue strips pre-applied to the stock edges during manufacturing.
The output is a sealed, folded piece approximately 8.5 by 3.67 inches. The recipient address is visible on the outside. The check and payment stub are sealed inside. The piece is ready to apply postage and mail.
What Equipment You Need for Pressure Seal Check Printing
1. A Laser or Inkjet Printer
Checkomatic's blank Z-fold pressure seal check stock is compatible with both laser and inkjet printers. Laser printers are preferred for production volume because they handle high-volume print jobs faster and produce sharper output on the thin bond paper used in pressure seal stock. Inkjet printers work for lower volumes.
Your printer does not need any special settings for pressure seal stock. It treats the flat Z-fold sheet as standard 8.5 by 11 inch paper. The only adjustment you may need is to confirm your printer's paper weight capacity matches the 28-pound bond paper weight of the stock.
If your checks require MICR toner for bank processing, confirm your laser printer supports MICR cartridges. Most banks now process checks optically under the Check 21 Act, but some institutions still use magnetic readers. Call your bank to confirm before investing in MICR toner.
2. A Pressure Seal Folding Machine
This is the piece of equipment that makes pressure seal check printing possible. The machine folds the printed sheet at the scored lines and applies the pressure needed to activate the edge adhesive. Without this machine, the sheet cannot be sealed.
Pressure seal machines come in two main sizes:
- Desktop folder sealers: Compact units that process 1,500 to 3,500 pieces per hour. Suitable for small to mid-size payroll operations of up to a few hundred employees per cycle.
- Floor-standing folder sealers: High-capacity units that process 5,000 or more pieces per hour. Suitable for large payroll operations, government disbursements, and high-volume accounts payable.
The machine must be configured to match the fold dimensions of your specific Z-fold stock. Most pressure seal machines have adjustable fold plates. Set them to match the fold positions pre-scored on your stock before running your first batch.
What Software You Need for Pressure Seal Check Printing
Pressure seal check printing requires your accounting software to work with a correctly configured print template. The two components work together to ensure fields land in the right positions on the flat sheet.
Your Accounting Software
QuickBooks, Sage, MYOB, Xero, and most other accounting platforms that support check printing can generate the check data for a pressure seal print job. The accounting software is the source of the variable data: payee, amount, date, and account details.
Some accounting platforms have built-in pressure seal check templates. Others require a custom template configured to your specific stock's field positions. Check your software's template library before purchasing your stock to confirm compatibility. Checkomatic's Z-fold pressure seal stock uses a check-in-middle format, which many accounting platforms support natively.
A Pressure Seal Print Template
The print template is the layout that tells your software and printer where each field goes on the flat 8.5 by 11 inch sheet. The template must position:
- The check (check number, date, payee, amount in numbers and words, memo, signature line) in the center zone of the flat sheet
- The recipient mailing address in the zone that will be on the outside after folding
- The return address in its correct zone
- Payment stub detail in the stub zone
If any field is positioned even slightly outside its zone, the folded document will show text in the wrong location , check information showing on the outside, or the address appearing inside where the recipient cannot see it without opening the document.
When Pressure Seal Saves Money
Pressure seal check printing typically becomes cost-effective for operations mailing 100 or more checks per cycle. At that volume, the labor savings from eliminating manual stuffing and the material savings from eliminating envelopes combine to offset the machine investment within a reasonable timeframe.
The break-even calculation for your operation:
- Calculate your current cost per piece: (envelope cost) + (labor minutes x labor rate) + (postage) = current per-piece total
- Calculate pressure seal per-piece cost: (Z-fold stock cost per sheet) + (postage) + (machine cost amortized over volume) = pressure seal per-piece total
- Multiply the difference by your annual volume to find your annual savings
When Envelope Mailing Is Still Better
For operations mailing fewer than 50 to 100 checks per cycle on an irregular schedule, the upfront cost of a pressure seal machine is harder to justify through per-piece savings. Traditional envelope stuffing with standard business check stock and double-window envelopes is the more practical choice for lower volumes. For envelopes that work with standard check formats, see the blank checks and check stock available at Checkomatic.
Who Benefits Most from Pressure Seal Check Printing
Pressure seal check printing is not the right format for every business. It is the right format for a specific type of operation. Here is who benefits most.
Payroll Operations for 100 or More Employees
If you run weekly or biweekly payroll for 100 or more employees who receive paper checks, pressure seal printing transforms payroll check distribution from a labor-intensive process into a near-automated one. Printing and sealing 200 payroll checks takes a few minutes through a machine versus an hour or more of manual stuffing. For payroll check formats and blank stock, see Blank Z Fold Pressure Seal Checks at Checkomatic.
High-Volume Accounts Payable
Businesses that process large vendor payment batches , construction companies paying subcontractors, manufacturers paying suppliers, distributors paying vendors , benefit from the speed and accuracy of pressure seal check printing. Each sealed piece contains exactly the check and payment detail for that vendor, with no risk of stuffing the wrong check into the wrong envelope.
Property Management
Property management companies distribute owner distribution checks monthly to large portfolios of property owners. A 300-unit portfolio might generate 300 owner distribution checks every month. Pressure seal printing processes that batch in minutes. The sealed self-mailer also reduces the risk of a check becoming separated from its payment detail before it reaches the owner.
Government and Nonprofit Disbursements
Government agencies and large nonprofits processing benefit payments, grant disbursements, or donor acknowledgment checks at high volume use pressure seal printing to manage disbursement cycles efficiently without adding labor headcount.
Who Should NOT Use Pressure Seal
Small businesses writing fewer than 50 checks per mailing cycle, businesses with irregular mailing schedules, and sole proprietors will not see enough volume savings to justify the machine investment. For these operations, standard business check stock with double-window envelopes is a simpler and more cost-effective approach. Browse business checks and computer checks for business for standard check formats.
Common Pressure Seal Check Printing Problems and How to Fix Them
Problem 1: Fields Print in the Wrong Position
After folding, fields appear in unexpected locations , the check information shows on the outside, or the address appears inside.
Cause: The print template is not configured correctly for your specific Z-fold stock dimensions.
Fix: Print a test on plain paper first. Hold the printout up to a sheet of your actual stock against a light source, align the edges, and verify each field lands in its correct zone. Adjust the template field positions until the alignment is correct before printing on check stock.
Problem 2: Edges Do Not Seal Completely
After running through the pressure seal machine, some edges are loose or partially unsealed.
Cause: Either the pressure setting on the machine is insufficient, or the stock is being stored in conditions that reduce adhesive effectiveness (high humidity or heat degrades pressure seal glue over time).
Fix: Increase the pressure setting on your folder sealer incrementally and run a test batch. Also confirm your stock is stored in a cool, dry location away from heat sources and direct sunlight. Stock stored in humid conditions or near HVAC vents may seal less effectively.
Problem 3: Paper Jams in the Printer
The Z-fold stock jams in the printer tray or mid-feed.
Cause: The printer's paper weight settings may not accommodate 28-pound bond paper, or the stock is loaded in the wrong orientation.
Fix: Set your printer to the heavy paper or cardstock feed setting if available. Confirm the stock is loaded flat (not pre-folded) in the correct orientation for your printer model. Fan the stack of stock before loading to prevent sheets from sticking together.
Problem 4: Folds Do Not Align With the Scored Lines
The machine folds the stock, but the folds do not follow the pre-scored lines, creating an uneven seal.
Cause: The fold plates on the pressure seal machine are not adjusted to match your stock's specific fold positions.
Fix: Adjust the fold plate positions on your machine to match the scored fold lines on your stock. Every pressure seal machine has adjustable fold guides. Set them to the exact position of each fold line before running production.
Ordering Blank Pressure Seal Check Stock From Checkomatic
Checkomatic's blank Z-fold pressure seal check stock is the starting point for any pressure seal check printing operation. Here is what the stock includes and what to know before ordering.
What Is Included in the Stock
- Standard 8.5 by 11 inch Z-fold format on 28-pound bond paper
- Pre-scored fold lines at the correct fold positions
- Pre-applied adhesive strips on the edges for pressure sealing
- Perforated tear edges for the recipient to open the document
- Security features including micro-bordering, watermarks, and endorsement areas
- Industry-standard dual-toned blue/red (cubed) coloring on the check stock
- Compatible with laser, inkjet, MICR, and OCR scanning technologies
What You Print on the Stock
The blank stock arrives with no pre-printed business name, address, or banking details. Your accounting software and print template handle all variable printing at the time of each production run. This is different from standard business checks, which arrive with your business information already pre-printed. Pressure seal blank stock is a universal format that works for any business's check information.
Available Quantities
Checkomatic offers blank Z-fold pressure seal check stock in quantities from 100 to 2,500 sheets. Larger quantities reduce the per-sheet cost. Orders ship in as few as three business days from Monroe, NY. For shipping options including rush production, see Shipping and Handling.
Browse and order at Blank Z Fold Pressure Seal Checks and the full range of blank check stock at blank checks and check stock. For guidance on choosing the right check format for your operation, see What Is the Best Place to Order Checks Online.
What Customers Say About Checkomatic
All reviews below are published on checkomatic.com and reproduced verbatim. Source: checkomatic.com/quickbooks-starter-pack-product, 4.5 stars from 166 verified reviews.
"Been with them for 15 years. Always reliable, always good quality, good service. What more can you ask for?"
ATV Inc. | ★★★★★ 5/5 | April 5, 2024 | Source: checkomatic.com/quickbooks-starter-pack-product
"We use CheckoMatic for all of our check needs! They have great prices and we receive our products in a timely manner!"
CG's Tax Service | ★★★★★ 5/5 | September 18, 2024 | Source: checkomatic.com/quickbooks-starter-pack-product
"I got 500 checks for less than half of what the bank wanted for 200!"
VVA Voucher Checks (Vietnam Veterans of America) | ★★★★★ 5/5 | July 6, 2024 | Source: checkomatic.com/quickbooks-starter-pack-product
"ASJ Wilson Construction has been a client of checkomatic for some years now and they've never disappointed this company. Thank you checkomatic for all that you do."
ASJ Wilson Construction | ★★★★★ 5/5 | June 6, 2024 | Source: checkomatic.com/quickbooks-starter-pack-product
"First time ordering and I am super impressed with the quality of the checks. No issues with delivery. I will be ordering again!"
TClinton | ★★★★★ 5/5 | April 9, 2025 | Source: checkomatic.com/quickbooks-starter-pack-product
"Affordable and efficient. My go-to business check printer."
Doe | ★★★★★ 5/5 | January 24, 2025 | Source: checkomatic.com/quickbooks-starter-pack-product
Why Choose Checkomatic for Pressure Seal Check Stock
Blank Z-Fold Stock With Built-In Security Features
Every sheet of Checkomatic's Z-fold pressure seal check stock includes micro-bordering, watermarks, and endorsement area security features at the base price. The stock is printed on 28-pound bond paper in the industry-standard format and color. Security features protect each sealed document during transit.
Compatible With Laser, Inkjet, MICR, and OCR
The stock works with standard laser and inkjet printers and is compatible with MICR printing for banks that require magnetic ink. OCR scanning compatibility ensures the stock processes correctly through automated bank systems. No special printer is required beyond what most businesses already have.
Quantities From 100 to 2,500 Sheets
Order the quantity that fits your current production volume without committing to a full warehouse pallet. Bulk discounts apply as quantity increases. Orders ship from Monroe, NY in as few as three business days.
In-House Manufacturing Since 1997
All check stock is manufactured at Checkomatic's own facility. No third-party print vendors. Consistent quality on every sheet in every order. Single point of accountability if any issue arises with an order.
Order blank pressure seal check stock at Blank Z Fold Pressure Seal Checks. Browse the complete range of blank stock at blank checks and check stock. For standard pre-printed business checks, see business checks and computer checks for business.
