Posts Tagged 'inkjet'

How Inkjet Printers Work: A Look at the Components

Inkjet printers are all around us and used every day to create a vast array of projects from important documentation to photographs taken just prior. An inkjet printer works by creating extremely small droplets of ink and jetting them onto a substrate or surface passing through the printer. The jet of ink droplets is guided by a series of nozzles contained in printheads and release to create a specific pattern based off layouts given to the printer from a computer or other digital device. Small electrical impulses will trigger the ink cartridges to release or eject ink at the appropriate times, forming dots onto the media and eventually creating images and texts. The inkjet printer will be able to handle simple layouts such as text documents and extremely complex layouts that have details challenging resolution capabilities. Inkjet printers are the most common type of household printer because they generally have a quiet operation and can produce photograph quality results.

What components are needed and how do they work?

Inkjet printers have a lot of internal components that affect the overall quality, speed, reliability, and durability of the printer and its ink cartridges. To better understand how the printer works, an understanding of what components are needed, what their functions are, and how they interact with each other is needed.

The Ink Cartridge

Ink cartridges or inkjet cartridges are the starting point and most recognized component in an inkjet printer, as they are the only component that must be replaced when the ink runs out. There are several different types of ink cartridges and they vary greatly depending on the printer model and manufacturer intended for. Ink cartridges can contain black ink only, black and color ink in a single cartridge, just color inks in a single cartridge, or separate cartridges for each individual color. Many photograph printers will even have light cyan and light magenta cartridges to provide life-like tonality on photograph printouts. The main purpose of the ink cartridge is to house the colorant or ink, until being released into the printheads.

Printheads

The Ink cartridges are directly connected with printheads or contain their own printheads built-into the cartridge. The Printhead is where all the magic happens inside the machine and is the component responsible for guiding the ink onto the page. A printhead consists of a series of tiny nozzles that are used to jet out or spray the aqueous ink solution from the cartridges to the piece of media passing through the printer.

When separate from the ink cartridges, printheads are the component that you snap the ink cartridges into when replacing ink. They look a lot like a trough or sunken in bench with small round protrusions arising into the ink cartridges. The round protrusions will insert into the cartridges when snapping them into place opening a passageway for the ink to travel down during the printing process.

An ink cartridge that contains its own printhead will rest at the bottom of the cartridge and looks like a computer chip or smoothed metal contact filled with tiny circuits and groves. Both printheads, separate and included, are responsible for letting the cartridge know when and where to release the ink.

Control Circuitry

In order to figure out the precise mathematics of when to release ink and when to hold back ink, a Control Circuit is interposed between the printer driver from the host computer and the printer itself. The circuit will actually control where energy is distributed amongst the chip and where to remove current flow. This will cause the ink cartridge to open or close particular nozzles to either start jetting ink out or to stop the flow of ink.

The printer driver on the host computer will translate images and text documents into a mathematical map or grid known as bitmap. The process of translating the images from a computer to a grid is known as the Raster Image Process. This lets the printhead Control Circuit know when to energize a specific spot on the circuit, releasing the ink and when to de-energize an area to stop the flow.

Stepper Motors

A Stepper Motor will rapidly move the printheads and the ink cartridges back and forth inside the machine and across the width of the media passing over every portion of the paper.  The Stepper Motor also has a secondary job of putting the rollers in motion during the printing process. This is achieved in a number of ways from belts to meshing gears, a common way to get multiple parts moving. The purpose of the Stepper Motor is to transform received electrical power into motion, which is basically making the internal components move.

Stabilizer Bar

Included with the printheads is a Stabilizing Bar that evenly distributes force on the printheads when they are in motion, moving quickly back and forth along the media. As the printheads and ink cartridges rapidly move back and forth, the inner particles are pulled from one side to the other. Similar to being in a car that is taking a sharp turn, the centripetal force will push you to one side of the vehicle. The Stabilizing bar helps to keep the cartridges at a steady angle to eliminate or reduce this effect. This will help keep the ink formulations from clotting or collecting in one location of the cartridge.

Belt

A belt is also one of the components found inside an inkjet printer. Just like the belts used in car motors, the printer belt is used to rotate additional parts. A belt is generally banded to a rotating component on a motor and stretched to wrap around other components that need to rotate. When the motor is powered on, a magnet will rapidly start rotating inside the motor causing external components on the motor to also spin or rotate. The belt uses the spinning force of the motor to spin or rotate the other parts that need to move.

In the inkjet printer, the belt is connected to the printhead assembly from the stepper motor, in order to move the ink cartridges back and forth inside the machine. Belts can also be used to assist the rollers found inside printers.

Rollers

The purpose of the rollers is very simple. They are used to carry or drive a piece of media (usually paper) through the printer. The rollers will grab a piece of media from the top of the stack placed inside the designated Input Tray and will transport that piece of media underneath the printheads and ink cartridges before ejecting the finished printout to the Output Tray. Some office inkjet printers that have Automatic Duplex capabilities can even have rollers that drive the media back through the printer to expose the reverse substrate underneath the printheads to create two-sided printouts.

Paper Trays

Another very recognizable component of the printer is the Paper Trays. Typically Inkjet printers will have a single Input Tray located at the top or back of the printer and a single Output Tray located in the front of the machine. Another common tray configuration is to have the Input Tray and Output Tray conflated into a single front-feeding tray. When both are used as one tray, such as with the HP PSC series printers, the tray will usually have small mounting members on either side of the tray to elevate the printed material from entering back through the printer. These also act as guides when loading new media into the Tray and as a divider between the Input and Output sections of the tray.

Power Supply

To supply power to the stepper motor and control circuitry a standard power supply has been incorporated into the printer. The purpose of the power supply is to convert the alternating current (AC) from a wall outlet to more controllable direct current (DC), needed to operate the stepper motors and circuitry inside printers. The power supply is also responsible for lighting up and energizing additional features such as display screens and scanning equipment.

Interface Ports

Also included with inkjet printers are ports that allow users to connect and transfer digital data between devices. The most common printer interface is the Hi-Speed USB 2.0 port which was created to outperform the older IEE Parallel interfaces. The Hi-speed USB 2.0 ports also broaden the range of external peripherals or devices that can be connected with the printer. The Interface ports main purpose is to provide a means to transfer data (usually text documents and images) from the computer to the printer and vice versa.

Photograph inkjet printers will typically have compatible media card slots as well, that allow users to walk-up and plug media cards and flash drives directly into the printer to print the files and photographs on the card without needing a computer.

These are the main components that can affect the output quality, durability, and performance of an inkjet printer and its ink cartridges. Hopefully this will help you identify and possibly prevent or fix any issues that are occurring with your machine.

What’s in this stuff: Ink Chemical Composition?

Ink cartridges contain some of the most expensive liquid on the planet, but what is ink actually made of?

Impact

The ink itself, after being sold in cartridges at brand name retail prices, can reach upwards of $3 per milliliter which is around $235 per cup or $11,350 per gallon. No doubt, that is expensive any way you look at it and some even compare modern printer ink prices to fine caviars and gold. A lot of printer inks now cost even more to replace then the printer originally cost, begging the consumer to ask, why not just purchase a new printer instead of replacing the ink?

To answer the latter question, printer manufacturers do not advertise the amount of printouts that are possible with the cartridges found inside the box when buying a new printer. This is because they are starter ink cartridges and are intended for consumers to get an idea of what the printer output is like or capable of and not necessarily how much ink will be in a replacement cartridge.  Thus, replacement ink cartridges will always yield more printouts then the included cartridges when purchasing a new printer.

The Mixture

Most ink compositions are a fairly basic mixture of fine pigment particles dispersed in a solvent which is generally a liquid or aqueous solution, although the solvent can be organic. Some formulations will also have colorants when the pigmented materials do not apply to the desired color. And with advanced formulas of inks such as the ChromaLife 100+, DURAbrite, UltraChrome, and other specially named inks, further ingredients are added to improve the overall chemical composition.

The additional ingredients found in these specialty cartridges have a specific purpose from reducing foaming action to controlling surface properties. The addition of pH modifiers will help to control the acidity levels of the mixture so the composition does not corrode the metal printheads inside the machine. Humectants can be added to keep the mixture from prematurely dying a substrate or surface while surfactants act as wetting agents, helping to control surface properties. Defoaming or antifoaming agents can also be added to regulate foam formation, as foam creates air pockets and uneven ink flow. Thickeners or rheology modifiers can also be added to provide needed viscosity to the jetted out liquid ink. Perhaps the most common addition to ink compositions is the polymeric resins or polymers which give pigments or colorants a glass-like coating that protects, reflects light, and keeps particles from binding or clumping together. And to prevent fungal and bacterial growth that can spoil chemical ink compositions, biocides are also added.

Metal Colorants

Black ink cartridges still use carbon to achieve the black tonal output as past attempts at substituting carbon for other metals failed due to toxicity or financial reasons. Most white ink formulations have titanium dioxide, being rutile or anatase crystals in tetragonal form. Both anatase and rutile are just different forms of titanium dioxide known for their rich color and luster. Moreover, specific metallic pigments such as copper-zinc alloy powder and aluminum powder have been used in novelty gold and silver inks which are very rare. Some other miscellaneous inorganic pigmented metals have also been used in various photographic inks to provide luminescent and pearlescent effects.

Colorants

Cyan ink cartridges get their bright blue hue from Direct Blue 199 dye which is made of copper phthalocyanine and sulfur. This substance is a direct dye, being able to directly contact and bond to fibrous substrates like paper and cloth without needing a binding confounder or fixative.

The Magenta vibrancy comes from Reactive Red dye 23 which is a dark red powder that has a high pH level and high lightfastness (resistance to fading in light). Many formulations containing Reactive Red Dye 23, will need both a pH modifiers and a confounder to help hold the mixture to a substrate before the dye reacts and adheres to cellulose like material.

The Yellow coloration comes from Acid Yellow dye 23, which is also known by chefs and food fanatics because it’s a common coloring agent used in foods. And although Acidic Yellow Dye 23 is found in foods, this dye has been known to trigger allergic reactions such as asthma attacks, hives, and contact dermatitis so do not try to ingest this yellow ink as it may be hazardous unlike its more natural cousin, yellow food coloring.

Miscellaneous Materials

Cyclahexanone is an organic solvent or colorless oil that helps ink adhere to polymers, making this chemical ideal for outdoor use and application on smooth surfaces. Cyclahexanone is also a precursor to creating nylon when oxidized with nitric acid. This substance is also commonly found with reactive dyes as it will hold the pigments in place until they naturally react to cellulose like material.

Ethoxylated acetylenic diols is the most common surfactant that is responsible for the viscosity or reduction of surface tension in most ink formulations. This substance is a low foaming wetting agent that also improves freeze-thaw stability of acrylic systems.  Ethoxylated acetylenic diols is also an excellent, oil in water, emulsifier.

Ethylenediaminetetraacetic acid, more commonly known to be abbreviated as EDTA, is a colorless water-soluble solid used to dissolve limescale and keep the printheads clean and bacteria free. EDTA acts by creating covalent bonds on the printheads, effectively trapping contaminents from ruining or clogging printheads.

Furthermore, Ethylene glycol is also used frequently in ink cartridges to slow evaporation and to help prevent print nozzles from clogging.

Further Reasons for Expenses

Hp claims the reason for the lavish prices is due to the technology put into creating a cartridge that can deliver superior results. Not only does each cartridge contain multiple chemicals, each one is carefully measured out and thoroughly tested to ensure the output results can be replicated naturally. This means, you’re not really paying for the liquid so much as the labor put into designing, creating, and testing the cartridge. Some manufacturers also add other elements to cartridges such as smart chips and piezo crystals which also increase the retail price.

Photo Ink vs. Regular Ink

There are several types of inks and ink formulations when it comes to printing, but they all have the same general purpose; to deliver an image onto a piece of media passing through the printer. However, some ink cartridges will deliver superior results when printing text and others will yield better results when producing images and photographs. The differing results are caused by the variation of elements found in the ink mixtures. An ink cartridge contains a basic mixture of water, glycol (a carrying liquid), and dyes or pigments and are intended to be jetted or sprayed onto paper or media, eventually creating an image.

Differences

The main difference between photo inkjets and regular inkjets is the ability of photo ink formulations to provide lighter tones of each color, commonly being cyan, magenta, and black. A regular cartridge will dispense wider set ink droplets to give image colors a lighter look. However, this makes lighter colored printouts look grainy and even multi-colored when inspected closely. This is because regular ink mixtures can only dispatch color so lightly, being intended for brighter execution to give printouts more vibrancy.

Photograph inks, on the other hand, will produce much lighter tones, perfect for shading and coloring elements such as faces and skin tones that have light colors. Since these mixtures produce lighter color, the ink is not as widely dispersed and results in smoother printouts that can capture high levels of detail. Many photograph ink compositions also avoid pigmented colorants since they do not sit as well on coated media such as photo glossy paper.  Ink formulations vary greatly depending on the machine being used, the frequency of ink being ejected, and depending on the type of printing the machine is intended for.

Ink Types

There are three basic ink compositions, that mostly all inks can be categorized into including Dye-Based Inks, Pigment-Based Inks, and Hybrid Inks. Dye-Based inks are composed of colorants dissolved in a liquid, such as water or glycol and have the most vivid and rich finishing results. Dye-Based inks also have a wide color gamut, providing colors unreachable by other mixtures and are compatible with a wide range of photograph papers. Unfortunately these ink mixtures do not last long and fade easily with light and become runny when moisture is added. In general, a dye-based ink formulation printout will last between 5 and 25 years depending on the surrounding environment.

Pigment-Based inks on the other hand, contain insoluble powder pigments that are suspended in the ink composition and do not dissolve into the solution like dye-based inks. These pigments are coated in a resin-like mixture making them much more stable and giving them resistances to fading or light. A pigment-based printout can last anywhere from 75 years to 150 years depending on how and where the printout was stored and displayed.  However, pigment-based inks do not soak into media as readily and have a tougher time adhering to coated paper.

Hybrid inks are a mixture of dye-based inks and pigment-based inks, and are sometimes referred to as pigmented inks. Combining the longevity of pigment-based inks with vibrancy of dye-based inks, Hybrid inks can be used for a number of applications and often offer superior printing results. Hybrid inks are known as pigmented inks since they use dye-based colorants and pigmented particles together, modifying the benefits and weaknesses of each type. Pigmented inks will have a wider color gamut than pigment-based inks but will not last as long. Pigmented inks (or Hybrid inks) can last up to 75 years when kept in an archival environment, such as being behind glass in a picture frame.

Similarities

Most inkjet printers and ink cartridges also contain conductive elements to help shepherd or guide the ink to the page, usually reducing the size of the droplet in the process, for higher resolution printouts with sharper definition. Both photo and regular ink cartridges can be found with these assisting elements. The most common element that helps to shape and delivery ink is the Piezoelectric crystals. When a small electrical current passes through a Piezo crystal, the element will rapidly change shape forcing the ink out of the printer nozzles. The reaction shapes and can reduce the ink droplet size while forcing the mixture out of the cartridge and onto the paper.

Ink cartridges have differing elements depending on the type of printout being created, which will enhance a project and the overall quality when using the right selection of inks. For example, when printing text documents, a matte black ink cartridge formulation such as the Epson T054820, will yield the best results since the ink has a softer look, making the text easier to read for long periods of time. Using a photo black ink cartridge on text document printing will result in overly shiny characters or grayish texts that do not read as well.

Cheap Printer Ink & Toner Cartridges – Simi Valley, CA

Simi Valley Ink

Find your Printer Ink!

Ink and Toner have become main staples of the business, office, and educational communities since the invention of the Xerography (copy) machine in 1959. Being able to quickly and cheaply create mass quantities of important documents and images for informational, advertisement, filing, and other purposes, made these Xerographic photocopying machines a must have among workgroups. The same principle of wanting to quickly and cheaply create important documents, images, and now photographs is still around today, only it has spread to domestic households and businesses alike.

There are some differences and similarities between what a home user is looking for and what an office or company is looking for. Home users, are more so concerned with being able to print all their documents, photographs, and occasional projects at home and with professional quality. On the other hand, offices, with a much higher rate of printing, are looking to produce as many printouts as possible and as quickly as possible to keep production levels ahead or at the speed of their workflow. In slew of this, offices and workgroups generally trend toward high-volume laser toner printers, while home users go for the less expensive inkjet printers. Although initial costs are far from similar due to the different volume outputs capable by these two machines, both users are still looking for an affordable price to print.

The cheapest printing options for ongoing printing, is to find affordable replacement ink cartridges or toner cartridges that aren’t going to sacrifice the output quality. The best wholesale retailers for printer supplies can be found in Simi Valley, California. Simi Valley is an ideal location for ink and toner distribution since many brand name printer manufacturers are stationed in California and the compatible cartridges made in China, ship to ports within close proximity to the valley. Because of this, distributors located in Simi Valley such as Inkgrabber.com and InkOnABudget.com can offer replacement Simi Valley ink cartridges and replacement Simi Valley toner cartridges at the lowest wholesale prices possible.

Inkgrabber is a family run business that has been in the printer and office supply industry for over 70 years and has been able to find some of the best quality replacement cartridges on the market. All their products have been ISO 9001 certified and tested to ensure the quality meets that of the OEM (Original Equipment Manufactured) cartridges. These Simi Valley ink cartridge distributors can lower replacement supply costs by up to 82 percent when using remanufactured or compatible cartridges. With their prime location, Inkgrabber’s remanufactured and compatible inks, toners, ribbons, and replacement supplies have been hand-picked and tested to ensure the same great quality and integrity found when using the genuine supplies.

While shopping around the web to find the best wholesale ink cartridges, Inkgrabber.com and InkOnABudget.com consistently come up with the highest quality products and the lowest prices. Their low prices are contingent on the fact that they are able to acquire replicated cartridges from China and locally refilled cartridges that eliminate transportation fees and unneeded middle suppliers. Simi Valley Printer Ink will always be offered at a greater discount than large chains and other independent ink suppliers. The main elements people are looking for in a printer, is an affordable price to print while still being able to retain the desired quality on final printouts. No matter what printer you purchase for your document handling needs, Inkgrabber and InkOnABudget will lower the operational costs and the price per printout using the local ink and local toner found in Simi Valley, California.

My printer does not recognize the cartridge

- Cartridges with a print head (All HP, Lexmark, some Canon)
This is caused by weak contact with the printer, or dirty contact points on the cartridge or printer. Clean the print head and the printer with a lint-free cloth or paper towel dipped in alcohol, distilled water or a non-greasy cleanser. Clean in a circular motion.
Try reinstalling the cartridge. “Drop” the cartridge into the holder and slightly wiggle the cartridge a few times to ensure correct seating. Then lock the cartridge in place.

- Cartridges without a print head (Epson, most Canon, Brother, Xerox)
This is most common when using remanufactured Epson ink cartridges with a chip in the front of the cartridge. The reason is that the chip is not properly connecting with the printer. Try pushing it firmly down and make sure it is properly seated. If this does not solve the problem, turn the printer off, remove the cartridge and reinstall, making sure it’s correctly seated. Turn the printer back on and see if the cartridge is recognized. If not repeat this process until it is.

Click here to watch our Ink & Toner TroubleShooting Videos at Inkgrabber.com!


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