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Tech tips & more from Cal-Imaging Specialists
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OCTOBER 2016

Welcome to our newsletter!
We'd like to share tech tips, product updates, current specials and general information that will help you get the most out of your products. We'd also like to announce our new website!
Please visit us at http://www.cal-imaging.ca

 

Want to save time and money?
Do you now use 2 1/4" wide by 42 foot long thermal paper rolls?
If you are dealing with the frustrating problem and expense of constantly replacing these very short rolls - we have a solution!
Around mid-year 2015, one of our clients was faced with the same problem you may have. We approached our thermal rolls supplier and asked them for a solution. They developed a production method where they were able to wrap 75 feet of thermal paper on a roll that had the same 1 3/8" diameter as the shorter 42 foot rolls! Our clients’ staff is now changing rolls much less frequently and has reduced their start and end of roll waste because of fewer roll changes. They are also realizing significant cost savings when using the longer rolls as well as labour savings for their staff.
Cost savings example:
Regular 2.25" wide 42' long thermal paper: about $0.0166/ft
Our 2.25" wide 75' long thermal paper: about $0.0106/ft
That’s almost a 65% savings!
These rolls are always stocked in our Calgary warehouse - please call your account manager for a quote for these as well as any other paper rolls you may use in your business.
TECH TIPS
ARTICLES
SHOWCASE
TIPS FROM OUR TECHS
Print PDF as an image
Problems can occur when you print a PDF file. For example, a PDF file can contain damaged content such as images or fonts that Acrobat cannot process during printing. Printing a PDF file as an image bypasses that processing by sending the printer a simple image of the document instead. This process can cause images and fonts to look slightly rougher, especially at the edges. However, you can specify the resolution in dots per inch (dpi) to suit your needs.

1. Ensure that your printer is turned on and connected.
If necessary, test print a different file.
2. Choose File > Print, and then click Advanced.
The location of the Advanced button depends on the version of Reader or Acrobat.
Mac OS: If you don't see the Advanced button, click the Down Arrow (to the right of the Printer pop-up menu).  
3. Select Print as Image.
The location of the Print as Image options depends on the version of Reader or Acrobat.
Windows
4. Click OK to close the Advanced Print Setup dialog box, and then click OK to print.  
 

Tracking down printing issues can be difficult. The problems can range from a damaged font, to an older printer driver, to a bad sector on the disk.

Install the latest update
Adobe releases free security updates quarterly. The updates often include improvements to common problems. Download the latest free update:
  1. Open Reader or Acrobat.
  2. Choose Help > Check For Updates. If a new update is available, it installs automatically.
  3. Once installed, restart you computer.
  4. Print the PDF again.
Garbled text
If the text is garbled or prints with "junk" characters, print again, but keep the PDF open until the entire PDF prints. If you are printing from the web, try printing using a different browser. Again, keep the browser window open until the PDF has finished printing.
 
 
USEFUL AND/OR INTERESTING ARTICLES
1. Toner hopper:
Toner is stored in the hopper. For HP LaserJet printers there is no such thing
as a universal toner. No single type of toner is going to function reliably and
consistently in ALL devices. Toner properties are unique and scientifically
blended to be compatible with a given printer’s speed, fusing temperatures
and toner charge requirements. Original HP toners are proprietary and
not available for others to source on the market. Aftermarket competitors
are challenged to duplicate the chemical and physical properties of the
HP toner. The toner in non-HP cartridges can over or under charge and
transfer differently than Original HP toner. This means that either too much
or too little toner will be put on a page and print quality will suffer.
2. Stirring blade:
As the cartridge rests between prints, the toner settles. The weight of the
toner particles cause them to sink while the air is forced out, or rises. When
printing, it’s important to have air circulating so the toner moves freely.
HP created “no shake” cartridges which include a set of stirring blades that
keep the toner fluffed up and flowing freely inside the cartridges during
all printing operations. After you select “print”, the initially settled toner is
stirred in the developing unit and pushed towards the developer roller as
it is aerated and partially charged. Remanufacturers often reuse a stirring
blade and over time it may lose its strength and ability to rotate, leaving
unused toner in the hopper.
3. Developer blade (aka Doctor blade):
As toner accumulates on the developer roller, the toner passes under the
developer blade which sheers a layer of toner off to a consistent height.
During this process, a charge is generated on the toner before it transfers
to the OPC drum. The toner charging occurs through the process of mixing
in the hopper and being rubbed by the developer blade as the roller rotates.
This process of charging the toner is called tribo-charging. In faster
devices, it is critical that the toner can be uniformly charged fast enough to
deliver the first page out. The charging process then has to keep pace as
more pages are printed. Toner acts as a lubricant on the developer blade
to prevent streaks, noise and other defects. Reusing a blade can cause
defects such as white streaks due to a worn and dirty blade where debris
gets caught under the blade. A blade can also become misaligned or have
the incorrect tension causing a defect where one side of the page is darker
than the other.
4. Developer roller (aka Mag roller or
Mag sleeve):
This roller has a magnetic sleeve that attracts toner particles onto its
surface and transfers them to the OPC. The amount of toner on the roller
is controlled by the developer blade, which uses pressure to keep the
amount of toner constant and causes a static charge to build on the toner.
As the developer roller rotates, the toner is “pushed” toward the OPC.
Thin seals are used along the roller and around the gears to prevent
toner from leaking. The seals are normally not replaced and can easily
be damaged during the remanufacturing process. This can lead to
toner leaks. The roller’s outer coating can easily be damaged, so if it
isn’t replaced during the re-manufacturing process—or if a roller is
misaligned—it can cause banding or repetitive defects on prints.
5. Primary charge roller (aka PCR):
This multilayered roller applies a uniform charge on the OPC drum to prep
the drum to receive a new image. Reused PCRs often cause non-uniform
charging or are damaged, so they don’t fully charge the OPC drum.
Similarly, new after-market PCRs used in re-manufactured or new build
(compatible) cartridges may not be precisely matched to the drum. Defects
in a PCR equal defects on the printed page.
6. Organic photo conductor drum (aka
OPC, or Imaging drum):
The OPC drum is a thin walled aluminium cylinder, coated with specially
pigmented photo conductive substances. The laser strikes the OPC
surface, creating an image one line at a time.
The toner is then transferred from the surface of the OPC to the paper by
the transfer roller (not shown – this component is inside the printer, not
the cartridge). This process applies a positive charge to the underside
of the paper which attracts the negatively charged toner from the OPC
pulling the toner image onto the paper. The paper has the toner image
electrostatically held in place and is now passed to the fusing unit, within
the printer, where toner is permanently fixed to the paper by applying heat
and pressure.
OPCs are designed to work with the printer’s laser and other
cartridge components (toner, developer roller, PCR, cleaning blade).
An aftermarket drum may not be matched as a system with other
components. A re-used image drum can also have problems such
as scratches on the surface, or the drum coating may be significantly
worn down in thickness. Image drums experience both mechanical and
electrical wear, and have a limited life. Worn drums collect less toner for
the same image and thus reduce the quality of the final prints.
7. Cleaning blade (aka Wiper blade):
After an image is transferred to the paper, the cleaning blade contacts the
OPC and scrapes any residual toner and dust and paper fibres from the
drum. There is always a little bit of toner left on the image drum. Toner
acts as a lubricant on the cleaning blade to prevent damaging the OPC. To
thoroughly clean the inside of the cartridge
during remanufacturing, the blade must be removed and cleaned, or
replaced entirely. Proper reassembly is extremely difficult and the cleaning
blade’s alignment and tension against the OPC is critical to imaging
performance. Remanufacturers and new build cartridge producers may
also add high quantities of dry lubricants to the wiper and OPC to prevent
friction. These lubricants may later break loose and cause print defects.
8. Waste hopper:
Toner particles left behind and other debris picked up during transfer are
deposited in the waste hopper after they are scraped off by the cleaning
blade. Thin seals are used to prevent toner from leaking from the waste
hopper. During the remanufacturing process, the seals are normally not
replaced and can easily be damaged which can lead to toner leaks. Preparing
new build or remanufactured cartridges, the toner hopper may be over-filled
to achieve higher yields than the OEM. The result—the waste toner hopper
can fill to capacity before the cartridge is empty, causing printer damage and
print quality defects when toner leaks into the printer. Using inferior toner
might also cause poor toner transfer, with the extra toner on the OPC gettingscraped off and prematurely filling the waste toner hopper.
 
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Cal-Imaging Specialists · 8, 415 60th Avenue SE · Calgary, AB T2H 2J5 · Canada

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