Tag Archives: copier

Difference Between Analogue and Digital Photocopiers

Originally photocopiers were all analogue. They worked by reflecting light onto a photosensitive surface. This surface (plate later to become the drum) reacted to light. Where the surface was charged the resistance of the drum lowered when exposed to light. This produced a latent image where only dark areas remained charged. The plate or drum then had toner projected at it that was oppositely charged and held attraction to the photosensitive surface.

Early photocopiers used liquid toner and were extremely messy but dry toner was introduced to combat these problems. Now the image could be clearly seen on the drum or plate. Transference pulled the toner from the drum onto the paper via transfer charge that was again charged opposite to toner but of a much higher capacity in voltage than the drum or plate. After Transfer the copy is then fused to the paper using heated rollers coated in silicon oil.

Analogue copiers relied on light being reflected onto the photosensitive surface through a lens. Because the light had to be a very high intensity they required fans to keep the machine cool during copying. These fans attracted dust and the copier mirrors often became coated with a film of dust often resulting in poor copy quality. In addition the machine had no memory and required a scan for every copy made.

Digital Copiers were to replace the analogue counterparts. Although they still reflected light it no longer needed to be so intense so cooling was minimal meaning the photocopier attracted less dust into the optics. The light now was reflected into a unit that converted light and dark into a binary signal. The copy then is projected onto the drum via a laser or an LED array and stored onto a hard drive allowing it to recalled. This allowed for scan once print many on modern photocopiers. However storing data on the hard drive caused security risks and manufacturers had to introduce secure data encryption of hard drives to prevent data being stolen from the photocopier.

As copiers seek to be more environmentally friendly charge rollers have largely replaced corona wires leading to reduced or zero ozone emissions on modern copiers. Silicon Oils have been vastly reduced as the modern copier offers superior toner technology.


Photocopy Your Business

As the downturn continues many people have turned to their photocopiers as a cheap form of advertising. As advertising budgets have been cut, business are turning back to traditional advertising with direct mail shots. The copier offers a convenient way to target small area’s of local business and now with most office photocopier machines offering colour, it is fairly straightforward to mock up a professional mail shot in Photoshop and post it to potential customers in your area.

Mail shots used to be hampered by expensive printing cost but computer design and superior printing and copying has relegated the need for screen printing. What’s more mail shots can be more targeted, segmenting local market place to areas such as schools, solicitors and estate agents. The copier can be the marketers friend allowing small campaigns to be launched at minimal cost.

Direct Marketing has long been proven as a successful way to promote your business and is one of the earliest forms of advertising. By publishing newsletters and mail shots directly to the customer the business offers a unique way to stay in touch with local clientele. With so many companies using digital media for advertising competition is high. Online advertising has increased massively in recent years but pay per click and email marketing has no longevity.

By publishing locally through direct marketing you are able to offer vouchers that can be kept and used. A local newsletter may contain a useful list contacts that the customer keeps. A successful newsletter may attract its own advertising and become self funding for the business. Some of the most successful mail shots team up a group of local companies that provide alternative services and the cost of advertising is reduced, whilst the value to the customer increases and with a range of discounts available to them on the mail shot or newsletter that they are not likely not to throw it away.

So next time you look at the photocopier in the office think of it not just as an expense but potentially your own personal printing press. Put your copier to work for you creating exciting business opportunities in your local area.


Getting Familiar with Photocopiers

In the eons of the digitalisation, where we talk in the language of computer, have you ever thought about how do photocopiers work? The machine which benefits us the most in our day-to-day work is still not in the observances of people, strange but true! You must have probably taken photocopiers as just Xerox paper producing kit. But don’t you think you must get acquainted with the indispensable artefact of your workplace? The following article will discuss about photocopiers in details.
What are photocopiers?
Photocopiers are machines that provide us with the duplicate prints of our booklets in an artless and cheap way. Basically, this technology was termed as “xerography” years before. Nowadays, people make use of their printers more for any kind of lithography work. But still in most of the offices people use traditional photocopiers for their vital chores. There is no area which can work without photocopiers nowadays. It is extensively used in education, work places, medical, politics, and everywhere. It was revealed few months back that digital machines may decrease the revenue generated by photocopiers. But, till now nothing of that sort is seen. To know more about how photocopiers work read the article given below.
How do photocopiers work?
The basic purpose of photocopiers is to give you an unblemished and decent image of the document you have inserted in it. It is quite thought-provoking to know about the technology involved in the working of photocopiers. The good thing to know about how a photocopier work’s is the two natural phenomena related to them. These phenomena are:
• Attraction rule: the particles of opposite charges always attract each other with a power which is directly proportional to the distance between them.
• Conductors: there are some particles which usually become good conductors of electricity when they are brought in the light.
Modern time photocopiers are in great variance with their basic model. Most of them use electrophotography as a part of their working.
• You will find a light sensitive surface in all photocopiers which is termed as “photoreceptive” surface. It consists of a photoconductive material which is also tied to a flat plate or drum for proper functioning. The plate is charged through the flow of static charge on it.
• Another integral part of the photocopier is toner. The toner is fed with some black powder which comes from the ink. When the drums get fully stimulating then it starts attracting these powder particles towards it.
• Even the sheets of documents which are put inside the photocopiers get statically charged and pull the toner particles towards them.
• The toner exhibits heat sensitive nature and that is why those particles which are loosely attached with the toner are easily pulled to the sheets through the action of heat.
What are the types of photocopiers available in the market?
The photocopiers used nowadays are of good eminence and perform multiple functions at a single second. There are many diverse types of photocopiers used like:
• Multifunction photocopiers: basically, these photocopiers are a combination of different types of tasks. You will mainly get multifunction photocopiers performing functions like scanning, printing and faxing. These are very essential for any class of work. In the updated models you can even try out sending emails as well. These are priced between £60 and £2500.
• Network photocopiers: these are basically brought in use in workplaces where a lot of printing work is required. In these photocopiers a network is created and a single photocopier is set to default. Then the command for printing can be given from any place. Moreover they come along many rings and whistles and cost you around £3000 for a full colour photocopier. Try buying refurbished photocopiers for a cheap photocopier with functionality.


Digital Photocopier Hard Drive Encryption and DOD

Reference CBS Investigation

In the report CBS using a photocopier expert purchased four machines from a used copier warehouse. Then using a forensic software program available free on the internet they were able to download hundreds of images including police records, payslips, social security numbers from the hard drives of the digital copiers.

One thing to remember is that encryption on photocopiers has improved with information on hard drives now encrypted by default. Most modern digital copiers support (IIO) immediate image overwrite or (ODIO) on demand image overwrite that will effectively delete saved images. Samsung’s latest digital copiers overwrite hard drive data three times in compliance with United States Department of Defense (DoD) directive 5200.28- M. This prevents forensic software from extracting usefull information. Xerox say there image overwrite feature is available on most of there digital copiers and this electronically shreds information.(Xerox Securty Information). Sharp also offer a security kit that encrypts data on the hard drive and shreds stored information.

Most manufacturers offer security software to remove data. The service technician can use the copier service mode to erase and reformat the hard drive. This option is available free of charge and can be carried out by your service technician at the end of the copiers life. Third party data removal tools do exist one such is INFOSWEEP (Copier Security ). Which incidently is offered by the same company that CBS used in its report to gain sensetive information from old copier hard drives.

Manufacturers have been extremely casual about security of hard drives. One important thing to consider is the obligations of companies and organisations to conform to the Data Protection Act. This act expressly requires that personal data be protected against unauthorised access by appropriate technical measures. The manufacturer may have a legal obligation to provide companies with the neccessary tools service and advice to protect data thats stored on hard drives from theft and this should be done free of charge.

In cases where the organisation or company need to conform to the DoD directive and software is not available to delete hard drive information then there is no alternative but to remove the hard drive at the end of the lease. Xerox has become one of the first manufacturers to publicly offer hard drive removal at the end of the copiers life.