Are you trying to find envelope printers among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!
We investigated and evaluated a number of the top-selling envelope printers on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 26 hours of research and did 67 envelope printers tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!
An overview of our top picks
Table of contents
The best envelope printers you can buy today
- 【Easy to Use】It is incompatible with iPad. The B1 bluetooth label printer support iOS, Android. Download the "NIIMBOT"app, select the printer model B1 from the app, and connect printer. USB cable connection for PC, need to download driver form Niimbot brand official website, please see the details page video description.
- 【Powerful APP】More than 30 fonts and languages, 100 borders, and 1500 symbols were supported by the app. Auto-identify the size of the label sticker, no need to manually select the template, complete the printing in time and quickly.
- 【Inkless Label Maker】Thermal printing technology, No-need ink or toner, cost-saving. Built-in rechargeable battery, and to conserve energy, the label printer will auto-turn off after 15-minute pause.
- 【Widely Use】 It is made of high-quality ABS and has a good appearance. B1 label maker machine with tape, 2 x 1.18 inch labels/roll. Small business, school, office, retail establishments, apparel, jewelry, and home organization can all use it.
- 【Compatibility】Not suggested for use with Pad, incompatible with Pad. Get in touch with us if your Bluetooth label maker is too broken to fix or won't start at all.
- EXCLUSIVELY WORKS WITH DYMO-BRANDED LABELS: LabelWriter 550 printers are carefully calibrated to only work with DYMO-branded labels saving you time, money and effort
- BETTER EFFICIENCY WITH NO MORE JAMS: Using patented "Automatic Label Recognition” technology, this printer optimizes the alignment of DYMO-branded labels, ensuring jam-free printing.
- MONEY SAVINGS WITH 65% LESS LABELS WASTE: This printer uses “Automatic Label Recognition” of DYMO-branded labels to automatically identify and display label size, type, and remaining quantity which reduces misprints, print defects & label waste.
- LESS EFFORT WITH ACCURATE, FAST, HIGH-QUALITY PRINTS – Optimized direct thermal printing technology adjusts to the loaded DYMO-branded label to ensure high-quality barcodes, QR codes, images, and text.
- PLASTIC FREE LABEL PACKAGING: DYMO LabelWriter label packaging and paper label rolls are FSC certified, with machine packaging consisting of at least 80% recycled materials.
- SOFTWARE COMPATIBILITY: Compatible with free DYMO Connect for Desktop with Windows 8.1 (or later) and Mac 10.14 (or later)
- Mobile Device Printing: Easily print from your iPhone, iPad, Android or tablet.Paper Compatibility : Plain: Plain Paper, Canon High Resolution Paper., | Super High Gloss: Photo Paper Pro Platinum., | Glossy: Photo Paper Plus Glossy II, Photo Paper Glossy., | Semi-Gloss: Photo Paper Plus Semi-Gloss, Photo Paper Pro Luster., | Matte: Matte Photo Paper., | Envelope: U.S. #10 Envelope
- Quick and Easy Wireless Setup. OS Compatibility - Windows: 19 Windows 10, Windows 8, Windows 8.1, Windows 7, Windows 7 SP1, Windows Vista SP1, Vista SP2,Windows XP SP3 32-bit. Mac - 20 Mac OS X v10.7.5 - 10.10
- Powerful Printing options: Airprint, Google Cloud Print, NFC, Mopria and Canon Print
- Compact and Space saving design
- Printer Only Bundle Includes: Printer, Manuals & Documents, Setup CD Rom, Setup inks(black and color), and Power Cord
- Prints up To 27 ppm, automatic duplex printing.Printer doesn't have Wi-Fi capabilityIt prints Sharp, professional Black and white pages at up to 2400 x 600dpi resolution. Auto duplex printing saves resources by printing on both sides of paper. Manual feed slot lets you conveniently print envelopes and letterheadsRefer the specification sheet below for contents of package and refer to the user manual for trouble shooting steps.
- 250 Sheet Capacity Paper Tray. A4 2-sided print speed-13. A4 standard print speed-26. Automatic 2 sided print. Recommended monthly volume-250 to 2,000 pages
- Windows 10 Compatibility: If you upgrade from Windows 7 or Windows 8.1 to Windows 10, some features of the installed drivers and software may not work correctly. Please uninstall all drivers and software in Windows 7 or Windows 8.1 before upgrading to Windows 10
- 1 year limited warranty with free phone support for the life of your machine
- This machine uses a USB connection ensuring your office runs smoothly with no complications. High Speed USB 2.0 Interface. Does not come with USB cable. Maximum Monthly Duty Cycle: 10,000 pages. Output Paper Capacity (sheets):100
- Brother is the Retail Brand in laser printer unit sales in the U.S.**Source: The NPD Group, Inc., U.S. Retail Tracking Service, SF and MF Laser Printers, Based on units, Jan. 2018 – Sept. 2021 combined.
- Full Product Specifications: Click to view
- Media Capacity: 1 x 75 Envelope
- Total Media Capacity: 75
- Media Size: Custom Size - 3.50" x 6.30"
- Media Size: Custom Size - 7" x 10"
- FROM AMERICA'S MOST TRUSTED PRINTER BRAND – The OfficeJet Pro 9135e is perfect for offices printing professional-quality color documents like presentations, brochures and flyers. Print speeds up to 20 ppm color, 25 ppm black.
- UPGRADED FEATURES – Fast color printing, copy, fax, auto 2-sided printing and scanning, auto document feeder, and two 250-sheet input trays.
- WIRELESS PRINTING – Stay connected with our most reliable dual-band Wi-Fi, which automatically detects and resolves connection issues.
- HP APP – Print, scan, copy, or fax right from your smartphone with the easiest-to-use print app.
- 3 MONTHS OF INK WITH HP+ ACTIVATION – Subscribe to Instant Ink delivery service to get ink delivered directly to your door before you run out. After 3 months, monthly fee applies unless cancelled, and you save up to 50%.
- PROTECTS YOUR DATA – Built-in HP Wolf Pro Security uses a powerful suite of customizable tools that boosts security and helps keep networks protected against cyber threats and malware.
- 4.3-INCH TOUCHSCREEN – Quickly navigate your printer with a large color touchscreen and a phone-like user interface.
- SUSTAINABLE DESIGN – Made with more than 40% recycled plastic.
- This printer is intended to work only with cartridges with original HP chips or circuitry and will block cartridges using non-HP chips or circuitry. Periodic firmware updates will maintain the effectiveness of these measures.
- 500 PACK SELF SEAL BUSSINESS ENVELOPES：HERKKA #10 Security envelopes are designed with Peel & Seal closure—no moisture needed and a premium security tint to protect sensitive information and a super strong SELF-SEAL strip. Suitable for home or office; securely send checks, invoices, or other confidential documents
- PREMIUM SECURITY TINT PATTERN: The interior of our #10 Security envelopes use a dark navy, heavy coverage security tint to provide privacy for your legal or business mail, offer the protection contents and sensitive information, a security tint makes envelopes hard to see through that ensures upmost privacy
- SUITABLE FOR CHECK PRINTING DESIGN: HERKKA envelopes ideal for standard business & legal documents and sensitive correspondence, manufactured with a windowless blank design allows for easy address printing or labels for mass mailing or to simply keep a bulk supply on hand for your home office. Suitable for quick, mass business mailings
- EASY SEAL CLOSURE: Our #10 envelopes are designed with an ultra strong SELF-SEAL adhesive strip to create a full, super secure seal across each envelope's width that won't easily open or tear, ideal for mailing for any letter sized and larger documents without splitting
- LONG LASTING SUPPLY: Large sized envelopes and 500 envelopes in every pack for a long lasting supply, suitable for everyday business correspondence and large mailing tasks! Fully compatible with most inkjet and laser printers for quick and easy addressing. Click the Orange Button to order now
- Inkless Efficiency - Gloryang mobile printer offers cost-effective and inkless printing solutions. Utilizing advanced thermal technology eliminates the need for ink, toner, or ribbons. The package includes a printer, 3 rolls of thermal printing paper(one roll in the printer & extra 2 rolls), a carrying case, a charging cable, instruction manual, and a guide card, etc. Only compatible with Gloryang/Jadens thermal paper, not compatible with Phomemo brand thermal paper or inkjet/laser paper!!
- Ultra-Portable Design - Weighing just 1.75lb and measuring 1.7in thick, the Gloryang portable printer is incredibly lightweight and compact. Perfect for on-the-go printing during travels, work, or university, it easily fits into backpacks or briefcases. Ideal for emergency scenarios, contracts, office documents, and more.
- Seamless Bluetooth Connectivity - The Gloryang mobile sticker printer effortlessly connects to iOS & Android devices via Bluetooth. It also serves as a compact printer for laptops and computers. Simply download the app '' PrintGo'' for smartphone printing and install the driver for laptops. Connects via USB cable when you use a computer to print. Print anytime, anywhere.
- High-Quality Printing & Long-lasting Battery - Experience crystal-clear printing with the Gloryang portable travel printer. Equipped with 2 built-in 2600mAh batteries, it offers up to 3 hours of continuous printing and 360 sheets on a single charge.
- Space-Saving Design - Say goodbye to clutter with the built-in paper bin of the Gloryang printer. It saves space and keeps your workspace tidy, whether you're on the go or in a car. With two ways to load thermal paper and the ability to print documents ranging from 2 to 8.5 inches, it caters to various printing needs.
- Perfect Gift for Holiday-Gloryang thermal printer can print clear photos, image, design drawings and text. It's perfect for busy professionals and students. Come with a nice case, making it as a perfect Christmas and new year gift for your families and friends.
- 【Specification】Crystal Clear Address Labels has perfect water resistance, can be used as Shipping Address Labels. Label Size: 1" x 2-5/8", Sheet Size: 8.5" x 11", 25 Sheets, 750 Labels.
- 【Sturdy Adhesion】 Crystal Clear Address Shipping Labelsmade of permanent adhesive material. Ensures the labels stick firmly to envelopes, plastic, glass, metal and more. Pictures and text can be printed clearly.
- 【Compatible Printing】Crystal Clear Address Labels are compatible with 15600, 18660, 5600, 5630, and more. Customize mailing address labels by hand, use free template on ".labelnize".
- 【Personalized Labeling】Customize mailing address labels by hand with your own text and graphics, or use free templates. You can also download print templates in PDF and Microsoft Word formats.
- 【Versatile Use】The functionality of clear address labels is versatile. They can also be used as shipping label, product label, barcode label, jar label, gift label,and more. It is also compatible with 15660, 18660, 5660, etc.
- Perfectly fit standard 8.5’’ x 11’’ paper sizes and other large documents like invoices, letters, checks, and more
- Provides complete mail security with dark black security tint that completely hides you mail
- Self seal design that is quick and easy and guaranteed to stay sealed with no need for tape or glue sticks
- Printer friendly envelopes with smooth thick paper saves time and frustration while printing with laser or inkjet printers
- Maintains professional look and feel throughout transit with our durable 24 LB white wove envelope paper
- ✉️ 100 ENVELOPE PACK; these envelopes are manufactured with a WINDOW-LESS front panel for the perfect choice for small businesses, home offices and everyday use, #10 Security Envelopes are provided in a 100-envelope pack
- ✉️ SUPER SECURITY TINT PATTERN; #10 envelopes designed with a secure, security tint-pattern to protect contents and sensitive information, perfect for ultra-secure mailing
- ✉️ QUICK-SEAL CLOSURE; our #10 envelopes are designed with an ultra strong SELF-SEAL adhesive strip to create a full, super secure seal across each envelope's width that won't easily open or tear, ideal for mailing for any letter sized and larger documents without splitting
- ✉️ LASER AND INKJET PRINTER COMPATIBLE; premium construction measuring 4-1/8 x 9-1/2 inches, fully compatible with most inkjet and laser printers for quick and easy addressing! Click the Orange Button to order now
- ✉️ ENVEGUARD TECHNOLOGY; in today's world where our health, privacy and security is so much threatened, the team of engineers and developers at Aimoh have researched and developed the EnveGuard Technology and Approval systems, at Aimoh we approve only the highest quality products, produced from the best and safest material on earth.
- Print amazing black/red labels using DK-2251
- Create cost-effective paper labels for packages, envelopes, file folders, Name badges, postage and more.
- Super-fast, printing up to 93 standard address labels per minute with black text at 300dpi
- Prints Brother DK pre-sized, easy-peel labels and continuous-length paper and film tapes. Auto cutter enables banners and signs up to 3 feet Long
- Capable of printing postage for packages and envelopes, right from your desk
- Form Factor: All-in-One
- Printer Output: Monochrome
- Max Print-speed 93 labels per minute
- Connectivity Technology: Wireless
- Perfect for secure everyday home and business mailing. Our Security #10 Envelopes perfectly fit standard 8.5'' x 11'' paper sizes and other large documents. Easily fits invoices, letters, checks, and more.
- Provides complete mail security. No need to worry about others seeing your documents, our dark black security tint completely hides you mail.
- Cost saving Gummed seal. Save money and time sealing our strong gummed seal envelopes. No need for tape or glue sticks.
- Easily print hundreds of envelopes with our low profile envelope design. Our Printer friendly envelopes with smooth thick paper saves you time and frustration while printing without having to worry about jamming. These envelopes are designed for both Laser and Inkjet Printers.
- Prevent others from tampering with your mail with our tamper proof design with gummed seal that penetrates the paper. Once the envelope is sealed, the envelopes has to be ripped to get inside.
- High-quality Label Printing; The Brother QL-600 Label Printer fits easily into small spaces, delivering high-res printing and big power to print a variety of paper and film labels; An automatic cutter lets you create banners up to 3 feet long
- Convenient Label Printing; Brother Genuine DK drop-in rolls use no ink or toner; Choose continuous tapes, film labels, and pre-sized paper labels up to 2. 4 inches (62 mm) wide, ideal for labeling tasks
- Fast and Affordable; Tackle labeling jobs in a hurry with the Brother QL-600 that prints at up to 44 labels per minute (1); The economical price lets you create cost-effective, high-quality paper and film labels for many labeling needs
- Print Labels Right Out of the Box; Use the 2. 4 in. (62 mm) x 26. 2 ft. (8 m) Continuous Length Black on White Paper Tape (DK-2205) and USB cable to connect to your PC or laptop and choose from pre-installed label options or create custom labels
- Create Custom Labels with the Free P-touch Editor Software; Seamlessly integrate with Microsoft applications such as Word, Excel, and Outlook to create labels using information from your computer; Compatible with Linux and Mac
- Form factor: Print Only
- Printer output: Monochrome
- Printer technology: Thermal
- 【Specification】Label size: 1" x 2-5/8", Sheet size: 8-1/2" X 11" (US Letter Size). 30 Labels per sheet, total 30 Sheets = 900 Labels
- 【Printable Address Labels】White label stickers work with both inkjet and laser printers. Labels print up with nice, clear quality and the color isn't distorted or the ink smudged. You will have no problem with the sheets jamming.
- 【Easy to Peel】The sticker labels are easy to peel off from sheets, simply bend the paper slightly at the corners to remove it from the backing. Just peel and paste!
- 【Self-adhesive Mailing Labels】Super sticky labels that adhere fast to cardboard, envelopes, cards, poly mailers, bubble mailers, bottles, boxes, plastic, galss, tin, metal and definitely won't fall off. Using our permanent adhesive return address labels, no more worrying about your label falling off in transit, once they are placed, these stickers are on for good!
- 【Multi Purpose Labels】These address labels are great for bulk shipping and mailing, organizing boxes, bin labels, classroom organization stickers, filing identification, bottle labels and more. The matte surface is similar to writing paper, you can write on it with pens, pencils or markers. These labels are white and blank, it's easy to create personalized labels.
- 【FBA Labels】These labels are perfect for printing out Amazon barcodes
- 【PREMIUM MATERIAL】-- The address label sticker paper texture is a bit thicker than regular paper, ensure easier to writing and easier to peel from backing; Meanwhile mailing labels that have great adhesion and stay where they are put, without curling up and popping off. Address labels in addition to their sticking capabilities, they need to produce bright, clear, clean text and images, easy to work with
- 【LABEL STICKERS PRINTABLE】- - Our shipping mailing labels are fit for your inkjet and laser printer; Address label sticker paper easy and smooth passage through your printer, without causing paper jams. JIQEZNL printable envelopes labels simplify all your shipping projects, and very helpful for you in shipping and saves you a lot of time
- 【MULTIPURPOSE LABELS】--JIQEZNL upgraded address labels, a best product to labels for shipping and mailing envelopes, return address labels; Organizing household items, canning jars, mugs, clothes and plastic containers labels. Even can be used as a writing label for classroom organization, DIY stickers, price labels, name tags and document filing. An ideal gift for your friends and family at home, school office and library
- 【STANDARD SHEET SIZE】-- Blank white address labels sheet size: 8.5" x 11", per sheet comes with 30 labels that size: 1 x 2-5/8" (2.5 by 6.6cm), 30 sheets total 900 labels give more labels to organizing your item. Labels are big enough, you will get a good amount of space to work with and to be seen easily after printing and writing
- 【WORRY FREE AFTERSALES】-- Best shopping experience by 7x24 hours contact. If you're not completely satisfied with your address labels for any reason, simply let us know and we promise will take care to solve it for you with whatever it takes!
- DUAL PAPER TRAYS: Spend less time refilling paper trays with dual 520-sheet capacitypaper trays, as well as a 100-sheet capacity multipurpose tray for printing on custommedia or envelopes(2). Total capacity is expandable up to 1,660 sheets with an optional tray(3).
- LOW-COST OUTPUT: Help reduce operating costs by using the Brother GenuineTN920UXXL ultra high-yield replacement toner cartridge for 18,000 pages. Includes aBrother Genuine 3,000-page toner cartridge(4).
- FLEXIBLE CONNECTIVITY: Features built-in Gigabit Ethernet and dual band wireless networking to seamlessly set up and share on your wired or wireless network. Easily print from a wide variety of mobile devices(5).
- ADVANCED SECURITY FEATURES: Equipped with Triple Layer Security features to help safeguard your network, keep your devices secure, and protect documents in transit to and from print devices.
- FAST PRINTING FOR INCREASED EFFICIENCY: The Brother HL-L6210DWT business monochrome laser printer delivers high-quality output and a print speed of up to 50ppm(1) to help boost productivity and ensure fast, professional quality documents for busy offices.
- Easily customize your own invitations, personalized stationery, note cards, thank you cards, birthday cards and more with templates and designs with Avery Design & Print Online
- Enjoy a clean, professional finish from customizable cards that are pre-scored for easy folding and feature precise cuts designed for clean, smooth edges
- Print beautiful, double-sided designs on premium, textured white printable cardstock paper with a weight of 65 lbs / 176 gsm
- Each sheet of printable cardstock is optimized for inkjet printers, resulting in crisp text, vivid images and smudge-free printing
- Item includes 25 printable sheets with a total of 50 4.25" x 5.5" blank note cards and 50 envelopes perfect for holiday cards, greeting cards, save the dates and more
- HIGH-QUALITY COLOR PRINTING: The Brother HLL8360CDWT can print high-impact business documents at speeds of up to 33 pages per minute. (1) CPU (Processor) Speed (MHz) : 800
- LARGE PAPER CAPACITY, EXPANDABLE: Dual paper trays (250-sheet and 500-sheet capacity) that allow busy workgroups to print with fewer interventions
- FLEXIBLE CONNECTIVITY: Connect via wireless or Gigabit Ethernet network interfaces or wirelessly print from your mobile device(2). Standard Paper Input Capacity(sheets) - 750. Output Paper Capacity (sheets) - 150 . Multi-purpose Tray Capacity (sheets)- 50. Mobile Device Compatibility - AirPrint, Brother iPrint&Scan, Mopria, Cortado Workplace, Wi-Fi Direct, NFC
- DASH REPLENISHMENT ENABLED: Upon activation, Dash Replenishment measures the toner level and orders more from when it’s low
- FOR USE WITH BROTHER GENUINE TONERS: TN431: TN431BK, TN431C, TN431Y, TN431M, TN433: TN433BK, TN433C, TN433Y, TN433M, TN436: TN436, TN436BK, TN436C, TN436Y, TN436M
- Brother is the #1 Retail Brand in laser printer unit sales in the U.S.**Source: The NPD Group, Inc., U.S. Retail Tracking Service, SF and MF Laser Printers, Based on units, Jan. 2018 – Sept. 2021 combined.
How to choose a good envelope printers
Does the idea of finding a fantastic envelope printers make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!
Your presence here indicates that you are interested in envelope printers. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top envelope printers products available right now. You might be wondering how we came up with the list. How was this buying guide developed?
First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top envelope printers on the market right now!
The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:
Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top envelope printers brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.
Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top envelope printers based on those.
Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.
Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.
Customer ratings: Would it be accurate to suggest that the envelope printers were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.
Customer Reviews: Like ratings, provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.
Seller Rank: This is very intriguing! Not only do you need a good envelope printers, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.
Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your envelope printers.
Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting envelope printers for months and years to come.
Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.
Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.
These are the standards by which we selected our envelope printers. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.
Why should you believe us?
There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what envelope printers should you purchase in 2022?
This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on envelope printers.
