Mike Meyers A+ book is a good text, but contains a big error not listed in the publishers errata.
(Not the Errata I saw last week anyway. I just found another one at the Osborne Website but it caused by browser to crash).
Mike has a section on INK Jet printing but the process he describes is the "Canon" (TM) BUBBLE Jet printing process, Not the Common INK jet.
The INK Jet Process uses a crystal as a pump mechanism to squirt the ink on to the page. This is done by pulsing a small electric current through the crystal, and the crystal changes shape due to the Peizo-electric effect hence creating the tiny fluctuations required to pump the ink out the nozzle.
Note This same effect in reverse has been used for years with the (Old?) black Vinyl records. The tiny grooves on the record pulse the needle/crystal which creates the current ocsillations which are converted to sound.
The Canon BUBBLE Jet is similar but resistors are used to heat the ink, which boils and pushes a bubble out the ink nozzle.
The Bubble jet is a patented design used by Canon only.
Reading a few posts here it becomes obvious to use more than one reference for your cert studies (read your motherboard books) plus get as much hands on experience as you can.
Zollo9999![[smile]](/data/assets/smilies/smile.gif "[smile] [smile]")
(Not the Errata I saw last week anyway. I just found another one at the Osborne Website but it caused by browser to crash).
Mike has a section on INK Jet printing but the process he describes is the "Canon" (TM) BUBBLE Jet printing process, Not the Common INK jet.
The INK Jet Process uses a crystal as a pump mechanism to squirt the ink on to the page. This is done by pulsing a small electric current through the crystal, and the crystal changes shape due to the Peizo-electric effect hence creating the tiny fluctuations required to pump the ink out the nozzle.
Note This same effect in reverse has been used for years with the (Old?) black Vinyl records. The tiny grooves on the record pulse the needle/crystal which creates the current ocsillations which are converted to sound.
The Canon BUBBLE Jet is similar but resistors are used to heat the ink, which boils and pushes a bubble out the ink nozzle.
The Bubble jet is a patented design used by Canon only.
Reading a few posts here it becomes obvious to use more than one reference for your cert studies (read your motherboard books) plus get as much hands on experience as you can.
Zollo9999