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Toner transfer failure

Toner transfer failure

2011-03-23 by David C. Partridge

I printed the top and bottom layouts onto glossy magazine paper on an HP LJ 4050, and they looked just fine.  I lined them up and taped them to the PCB, and fed the sandwich through the laminator many times, but the toner stayed firmly stuck to the paper with not the slightest hint of sticking to the PCB.  The toner is standard HP 4127X, and the laminator is set to its highest setting of about 170 degrees Celsius (just under 340F).

What am I doing wrong?

Thanks
Dave

Re: Toner transfer failure

2011-03-23 by jmelson2

--- In Homebrew_PCBs@yahoogroups.com, "David C. Partridge" <david.partridge@...> wrote:
>
> I printed the top and bottom layouts onto glossy magazine paper on an HP LJ 4050, and they looked just fine.  I lined them up and taped them to the PCB, and fed the sandwich through the laminator many times, but the toner stayed firmly stuck to the paper with not the slightest hint of sticking to the PCB.  The toner is standard HP 4127X, and the laminator is set to its highest setting of about 170 degrees Celsius (just under 340F).
> 
> What am I doing wrong?
There might be a plastic or oily film on the board.  I use dry film resist, but have to scrub the board with abrasive cleanser and/or very fine sandpaper to get good adhesion.

Jon

RE: [Homebrew_PCBs] Re: Toner transfer failure

2011-03-23 by David C. Partridge

I did manage to get a degree of adhesion on a test board by using a clothes iron set to the highest setting.  But it was pretty patchy.  I had scrubbed the board first with a nylon scourer and also wiped over with acetone to de-grease it.    


Regards,
David Partridge
Show quoted textHide quoted text
-----Original Message-----
From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] On Behalf Of jmelson2
Sent: 23 March 2011 16:05
To: Homebrew_PCBs@yahoogroups.com
Subject: [Homebrew_PCBs] Re: Toner transfer failure

There might be a plastic or oily film on the board.  I use dry film resist, but have to scrub the board with abrasive cleanser and/or very fine sandpaper to get good adhesion.

Jon

Re: [Homebrew_PCBs] Re: Toner transfer failure

2011-03-23 by Eldon Brown

I suggest "Comet" and "Scott Bright" and then acetone.

See similar details and results on my web site:

http://WA0UWH.blogspot.com

Eldon - WA0UWH


On Wed, Mar 23, 2011 at 10:59 AM, David C. Partridge <
david.partridge@perdrix.co.uk> wrote:

>
>
> I did manage to get a degree of adhesion on a test board by using a clothes
> iron set to the highest setting. But it was pretty patchy. I had scrubbed
> the board first with a nylon scourer and also wiped over with acetone to
> de-grease it.
>
> Regards,
> David Partridge
> -----Original Message-----
> From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
> On Behalf Of jmelson2
> Sent: 23 March 2011 16:05
> To: Homebrew_PCBs@yahoogroups.com
> Subject: [Homebrew_PCBs] Re: Toner transfer failure
>
> There might be a plastic or oily film on the board. I use dry film resist,
> but have to scrub the board with abrasive cleanser and/or very fine
> sandpaper to get good adhesion.
>
> Jon
>
>  
>


[Non-text portions of this message have been removed]

Re: [Homebrew_PCBs] Re: Toner transfer failure

2011-03-23 by Peter Loron

Scotchbrite is a line of abrasive products from 3M. The green colored 
pads work well. I got good results by using the green pad and water to 
remove the surface layer, then soap + hot water to remove the bulk of 
dirt and oils. After drying, I used a clean, lint free wipe and acetone 
to make sure the surface was free of oils.

I also found that different irons vary significantly in how hot they 
get. One of our irons worked much better than the other.

You may want to check into a laminator instead of an iron.

-Pete
Show quoted textHide quoted text
On 03/23/2011 11:32 AM, Eldon Brown wrote:
> I suggest "Comet" and "Scott Bright" and then acetone.
>
> See similar details and results on my web site:
>
> http://WA0UWH.blogspot.com
>
> Eldon - WA0UWH
>
>
> On Wed, Mar 23, 2011 at 10:59 AM, David C. Partridge<
> david.partridge@...>  wrote:
>
>>
>> I did manage to get a degree of adhesion on a test board by using a clothes
>> iron set to the highest setting. But it was pretty patchy. I had scrubbed
>> the board first with a nylon scourer and also wiped over with acetone to
>> de-grease it.
>>
>> Regards,
>> David Partridge
>> -----Original Message-----
>> From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
>> On Behalf Of jmelson2
>> Sent: 23 March 2011 16:05
>> To: Homebrew_PCBs@yahoogroups.com
>> Subject: [Homebrew_PCBs] Re: Toner transfer failure
>>
>> There might be a plastic or oily film on the board. I use dry film resist,
>> but have to scrub the board with abrasive cleanser and/or very fine
>> sandpaper to get good adhesion.
>>
>> Jon

Re: [Homebrew_PCBs] Re: Toner transfer failure

2011-03-23 by kabowers@NorthState.net

On Wed, 23 Mar 2011 13:43:32 -0700, you wrote:

>Scotchbrite is a line of abrasive products from 3M. The green colored 
>pads work well. I got good results by using the green pad and water to 
>remove the surface layer, then soap + hot water to remove the bulk of 
>dirt and oils. After drying, I used a clean, lint free wipe and acetone 
>to make sure the surface was free of oils.
>
>I also found that different irons vary significantly in how hot they 
>get. One of our irons worked much better than the other.
>
>You may want to check into a laminator instead of an iron.
>
>-Pete
>
>
To prepare a board for toner transfer I've had good results by first 
giving the board a really good scrubbing with green Scotchbrite and 
dishwashing detergent. I follow this with a hot water rinse. Then I 
spray it down with Orange Blast and let it sit for a few minutes. 
Next is a good rinse in hot water. Finally I wash the board with 93%+ 
Isopropyl Alcohol from the drugstore then dry the board with a fan.

I like the alcohol instead of acetone; I think it's easier on the body.

Keith Bowers WB4LSJ- Thomasville, NC

Re: Toner transfer failure

2011-03-23 by tda7000

I have tried the transfer with cleaning the boards and without and I couldn't see much of a difference.

Sounds to me like the Toner you are using has a higher melting point than other toners.


--- In Homebrew_PCBs@yahoogroups.com, kabowers@... wrote:
Show quoted textHide quoted text
>
> On Wed, 23 Mar 2011 13:43:32 -0700, you wrote:
> 
> >Scotchbrite is a line of abrasive products from 3M. The green colored 
> >pads work well. I got good results by using the green pad and water to 
> >remove the surface layer, then soap + hot water to remove the bulk of 
> >dirt and oils. After drying, I used a clean, lint free wipe and acetone 
> >to make sure the surface was free of oils.
> >
> >I also found that different irons vary significantly in how hot they 
> >get. One of our irons worked much better than the other.
> >
> >You may want to check into a laminator instead of an iron.
> >
> >-Pete
> >
> >
> To prepare a board for toner transfer I've had good results by first 
> giving the board a really good scrubbing with green Scotchbrite and 
> dishwashing detergent. I follow this with a hot water rinse. Then I 
> spray it down with Orange Blast and let it sit for a few minutes. 
> Next is a good rinse in hot water. Finally I wash the board with 93%+ 
> Isopropyl Alcohol from the drugstore then dry the board with a fan.
> 
> I like the alcohol instead of acetone; I think it's easier on the body.
> 
> Keith Bowers WB4LSJ- Thomasville, NC
>

Re: Toner transfer failure

2011-03-24 by RJ

I tried our newer HP laserjet printer at work and its a
no go getting the toner to stick well. Gave up and used our
newer Canon instead ..

--- In Homebrew_PCBs@yahoogroups.com, "tda7000" <Tda7000@...> wrote:
Show quoted textHide quoted text
>
> I have tried the transfer with cleaning the boards and without and I couldn't see much of a difference.
> 
> Sounds to me like the Toner you are using has a higher melting point than other toners.
> 
> 
> --- In Homebrew_PCBs@yahoogroups.com, kabowers@ wrote:
> >
> > On Wed, 23 Mar 2011 13:43:32 -0700, you wrote:
> > 
> > >Scotchbrite is a line of abrasive products from 3M. The green colored 
> > >pads work well. I got good results by using the green pad and water to 
> > >remove the surface layer, then soap + hot water to remove the bulk of 
> > >dirt and oils. After drying, I used a clean, lint free wipe and acetone 
> > >to make sure the surface was free of oils.
> > >
> > >I also found that different irons vary significantly in how hot they 
> > >get. One of our irons worked much better than the other.
> > >
> > >You may want to check into a laminator instead of an iron.
> > >
> > >-Pete
> > >
> > >
> > To prepare a board for toner transfer I've had good results by first 
> > giving the board a really good scrubbing with green Scotchbrite and 
> > dishwashing detergent. I follow this with a hot water rinse. Then I 
> > spray it down with Orange Blast and let it sit for a few minutes. 
> > Next is a good rinse in hot water. Finally I wash the board with 93%+ 
> > Isopropyl Alcohol from the drugstore then dry the board with a fan.
> > 
> > I like the alcohol instead of acetone; I think it's easier on the body.
> > 
> > Keith Bowers WB4LSJ- Thomasville, NC
> >
>

RE: [Homebrew_PCBs] Re: Toner transfer failure

2011-03-24 by Al Berntsen

See if you can slow the feed rate thru the laminator.I use the release lever to stop the feed every quarter inch or so to allow the PCB to heat completely.Worked for me when I have Toner not sticking.Al Berntsenaberntsen@... 
Show quoted textHide quoted text
---------- Original Message ----------
From: "David C. Partridge" <david.partridge@...>
To: <Homebrew_PCBs@yahoogroups.com>
Subject: RE: [Homebrew_PCBs] Re: Toner transfer failure
Date: Wed, 23 Mar 2011 17:59:39 -0000

  
  I did manage to get a degree of adhesion on a test board by using a clothes iron set to the highest setting.  But it was pretty patchy.  I had scrubbed the board first with a nylon scourer and also wiped over with acetone to de-grease it.    
 
 Regards,
 David Partridge
 -----Original Message-----
 From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] On Behalf Of jmelson2
 Sent: 23 March 2011 16:05
 To: Homebrew_PCBs@yahoogroups.com
 Subject: [Homebrew_PCBs] Re: Toner transfer failure
 
 There might be a plastic or oily film on the board.  I use dry film resist, but have to scrub the board with abrasive cleanser and/or very fine sandpaper to get good adhesion.
 
 Jon
 

      
____________________________________________________________
Mortgage Rates Hit 2.99%
If you owe under $729k you probably qualify for Gov't Refi Programs
http://thirdpartyoffers.juno.com/TGL3131/4d8a9828c51893b148bst02duc

[Non-text portions of this message have been removed]

RE: [Homebrew_PCBs] Re: Toner transfer failure

2011-03-24 by David C. Partridge

Oh bother!  I really don't want to have to buy another laser printer!  Does anyone know if there is a lower melting point toner (another brand perhaps) that will work with the HP 4000 series LaserJets?  

Either that or I will need to make modifications to the laminator to increase its temperature range, proably a PID

Thanks
Dave
Show quoted textHide quoted text
-----Original Message-----
From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] On Behalf Of RJ
Sent: 24 March 2011 00:28
To: Homebrew_PCBs@yahoogroups.com
Subject: [Homebrew_PCBs] Re: Toner transfer failure

I tried our newer HP laserjet printer at work and its a no go getting the toner to stick well. Gave up and used our newer Canon instead ..

--- In Homebrew_PCBs@yahoogroups.com, "tda7000" <Tda7000@...> wrote:
>
> I have tried the transfer with cleaning the boards and without and I couldn't see much of a difference.
> 
> Sounds to me like the Toner you are using has a higher melting point than other toners.
> 
> 
> --- In Homebrew_PCBs@yahoogroups.com, kabowers@ wrote:
> >
> > On Wed, 23 Mar 2011 13:43:32 -0700, you wrote:
> > 
> > >Scotchbrite is a line of abrasive products from 3M. The green 
> > >colored pads work well. I got good results by using the green pad 
> > >and water to remove the surface layer, then soap + hot water to 
> > >remove the bulk of dirt and oils. After drying, I used a clean, 
> > >lint free wipe and acetone to make sure the surface was free of oils.
> > >
> > >I also found that different irons vary significantly in how hot 
> > >they get. One of our irons worked much better than the other.
> > >
> > >You may want to check into a laminator instead of an iron.
> > >
> > >-Pete
> > >
> > >
> > To prepare a board for toner transfer I've had good results by first 
> > giving the board a really good scrubbing with green Scotchbrite and 
> > dishwashing detergent. I follow this with a hot water rinse. Then I 
> > spray it down with Orange Blast and let it sit for a few minutes.
> > Next is a good rinse in hot water. Finally I wash the board with 
> > 93%+ Isopropyl Alcohol from the drugstore then dry the board with a fan.
> > 
> > I like the alcohol instead of acetone; I think it's easier on the body.
> > 
> > Keith Bowers WB4LSJ- Thomasville, NC
> >
>




------------------------------------

Be sure to visit the group home and check for new Links, Files, and Photos:
http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links

RE: [Homebrew_PCBs] Re: Toner transfer failure

2011-03-24 by David C. Partridge

I did find out from the HP LJ4050 manual that its fuser operates at 400F (205C), so not too much above where my laminator works. 


Regards,
David Partridge
Show quoted textHide quoted text
-----Original Message-----
From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] On Behalf Of David C. Partridge
Sent: 24 March 2011 09:00
To: Homebrew_PCBs@yahoogroups.com
Subject: RE: [Homebrew_PCBs] Re: Toner transfer failure

Oh bother!  I really don't want to have to buy another laser printer!  Does anyone know if there is a lower melting point toner (another brand perhaps) that will work with the HP 4000 series LaserJets?  

Either that or I will need to make modifications to the laminator to increase its temperature range, proably a PID

Thanks
Dave
-----Original Message-----
From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] On Behalf Of RJ
Sent: 24 March 2011 00:28
To: Homebrew_PCBs@yahoogroups.com
Subject: [Homebrew_PCBs] Re: Toner transfer failure

I tried our newer HP laserjet printer at work and its a no go getting the toner to stick well. Gave up and used our newer Canon instead ..

--- In Homebrew_PCBs@yahoogroups.com, "tda7000" <Tda7000@...> wrote:
>
> I have tried the transfer with cleaning the boards and without and I couldn't see much of a difference.
> 
> Sounds to me like the Toner you are using has a higher melting point than other toners.
> 
> 
> --- In Homebrew_PCBs@...m, kabowers@ wrote:
> >
> > On Wed, 23 Mar 2011 13:43:32 -0700, you wrote:
> > 
> > >Scotchbrite is a line of abrasive products from 3M. The green 
> > >colored pads work well. I got good results by using the green pad 
> > >and water to remove the surface layer, then soap + hot water to 
> > >remove the bulk of dirt and oils. After drying, I used a clean, 
> > >lint free wipe and acetone to make sure the surface was free of oils.
> > >
> > >I also found that different irons vary significantly in how hot 
> > >they get. One of our irons worked much better than the other.
> > >
> > >You may want to check into a laminator instead of an iron.
> > >
> > >-Pete
> > >
> > >
> > To prepare a board for toner transfer I've had good results by first 
> > giving the board a really good scrubbing with green Scotchbrite and 
> > dishwashing detergent. I follow this with a hot water rinse. Then I 
> > spray it down with Orange Blast and let it sit for a few minutes.
> > Next is a good rinse in hot water. Finally I wash the board with 
> > 93%+ Isopropyl Alcohol from the drugstore then dry the board with a fan.
> > 
> > I like the alcohol instead of acetone; I think it's easier on the body.
> > 
> > Keith Bowers WB4LSJ- Thomasville, NC
> >
>




------------------------------------

Be sure to visit the group home and check for new Links, Files, and Photos:
http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links





------------------------------------

Be sure to visit the group home and check for new Links, Files, and Photos:
http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links

Re: Toner transfer failure

2011-03-24 by tda7000

I would assume this is not so, the printer is probably fixed at a certain temperature and using other toner would cause problems.
(I may be entirely wrong)

I would look into finding out the correct temperature and increasing the laminator temperature.

Just make sure the laminator can withstand it, especially if you need to go over 170 degrees, at that temperature the plastic case warps on the top of mine.

I notice a few people have changed the end-mounts which hold the rollers\motor as the standard plastic ones on some laminators seem to fail under the higher temperatures.

--- In Homebrew_PCBs@yahoogroups.com, "David C. Partridge" <david.partridge@...> wrote:
Show quoted textHide quoted text
>
> Oh bother!  I really don't want to have to buy another laser printer!  Does anyone know if there is a lower melting point toner (another brand perhaps) that will work with the HP 4000 series LaserJets?  
> 
> Either that or I will need to make modifications to the laminator to increase its temperature range, proably a PID
> 
> Thanks
> Dave
> -----Original Message-----
> From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] On Behalf Of RJ
> Sent: 24 March 2011 00:28
> To: Homebrew_PCBs@yahoogroups.com
> Subject: [Homebrew_PCBs] Re: Toner transfer failure
> 
> I tried our newer HP laserjet printer at work and its a no go getting the toner to stick well. Gave up and used our newer Canon instead ..
> 
> --- In Homebrew_PCBs@yahoogroups.com, "tda7000" <Tda7000@> wrote:
> >
> > I have tried the transfer with cleaning the boards and without and I couldn't see much of a difference.
> > 
> > Sounds to me like the Toner you are using has a higher melting point than other toners.
> > 
> > 
> > --- In Homebrew_PCBs@yahoogroups.com, kabowers@ wrote:
> > >
> > > On Wed, 23 Mar 2011 13:43:32 -0700, you wrote:
> > > 
> > > >Scotchbrite is a line of abrasive products from 3M. The green 
> > > >colored pads work well. I got good results by using the green pad 
> > > >and water to remove the surface layer, then soap + hot water to 
> > > >remove the bulk of dirt and oils. After drying, I used a clean, 
> > > >lint free wipe and acetone to make sure the surface was free of oils.
> > > >
> > > >I also found that different irons vary significantly in how hot 
> > > >they get. One of our irons worked much better than the other.
> > > >
> > > >You may want to check into a laminator instead of an iron.
> > > >
> > > >-Pete
> > > >
> > > >
> > > To prepare a board for toner transfer I've had good results by first 
> > > giving the board a really good scrubbing with green Scotchbrite and 
> > > dishwashing detergent. I follow this with a hot water rinse. Then I 
> > > spray it down with Orange Blast and let it sit for a few minutes.
> > > Next is a good rinse in hot water. Finally I wash the board with 
> > > 93%+ Isopropyl Alcohol from the drugstore then dry the board with a fan.
> > > 
> > > I like the alcohol instead of acetone; I think it's easier on the body.
> > > 
> > > Keith Bowers WB4LSJ- Thomasville, NC
> > >
> >
> 
> 
> 
> 
> ------------------------------------
> 
> Be sure to visit the group home and check for new Links, Files, and Photos:
> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>

Re: Toner transfer failure

2011-03-24 by bebx2000

I use two Hp Laserjets, a 1320 and a 1102W and never have a problem with the toner fusing. The latter is a cheap wireless that routinely goes on sale for $99 at Staples.

Baxter

--- In Homebrew_PCBs@yahoogroups.com, "David C. Partridge" <david.partridge@...> wrote:
>
> Oh bother!  I really don't want to have to buy another laser printer!  Does anyone know if there is a lower melting point toner (another brand perhaps) that will work with the HP 4000 series LaserJets?

RE: [Homebrew_PCBs] Re: Toner transfer failure

2011-03-24 by David C. Partridge

I would imagine that those both run their fusers at a lower temperature than the 4000 series, so the fact you've not had problems isn't a surprise.   

Dave
Show quoted textHide quoted text
-----Original Message-----
From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] On Behalf Of bebx2000
Sent: 24 March 2011 15:27
To: Homebrew_PCBs@yahoogroups.com
Subject: [Homebrew_PCBs] Re: Toner transfer failure



I use two Hp Laserjets, a 1320 and a 1102W and never have a problem with the toner fusing. The latter is a cheap wireless that routinely goes on sale for $99 at Staples.

Baxter

Re: [Homebrew_PCBs] Toner transfer failure

2011-03-24 by Herbert E. Plett

170 degrees is too low
should be over 200, a good iron in linen position goes up to 240 and works well.


--- On Wed, 3/23/11, David C. Partridge <david.partridge@...> wrote:
Show quoted textHide quoted text
> I printed the top and bottom layouts
> onto glossy magazine paper on an HP LJ 4050, and they looked
> just fine.  I lined them up and taped them to the PCB,
> and fed the sandwich through the laminator many times, but
> the toner stayed firmly stuck to the paper with not the
> slightest hint of sticking to the PCB.  The toner is
> standard HP 4127X, and the laminator is set to its highest
> setting of about 170 degrees Celsius (just under 340F).
> 
> What am I doing wrong?
> 
> Thanks
> Dave

Re: Toner transfer failure

2011-03-26 by David C. Partridge

I reverse engineered the thermostat circuit in one of the laminators which was based on the Vf of 1N4148 diode as the temperature sensor.   I made some small mods to the circuit to extend the range of the thermostat.

I managed to heat the rollers up to 210C (measured with a Pt100 RTD) and was just starting to get adhesion of the toner to the PCB, but at this point the silicone rubber sheath on the rollers just expanded and delaminated from the base rollers.   

I did this to the laminator that had already got some roller damage and heat damage to the case, so I'm not too out of pocket (about GBP30).  The plastic end parts of the housing would not have tolerated this sort of temperature for long anyway.

Does anyone know whether there are laminators that will work OK at about 230C or 240C without failing?

PS Does anyone in the UK want to buy a very nearly new unused Peak PP330 A3 laminator (not the guinea pig laminator above) at about half retail price? Details are here:

<http://www.vivid-online.com/products/3222/55>

Dave
--- In Homebrew_PCBs@yahoogroups.com, "Herbert E. Plett" <cachureos@...> wrote:
Show quoted textHide quoted text
>
> 170 degrees is too low
> should be over 200, a good iron in linen position goes up to 240 and works well.
> 
> 
> --- On Wed, 3/23/11, David C. Partridge <david.partridge@...> wrote:
> > I printed the top and bottom layouts
> > onto glossy magazine paper on an HP LJ 4050, and they looked
> > just fine.  I lined them up and taped them to the PCB,
> > and fed the sandwich through the laminator many times, but
> > the toner stayed firmly stuck to the paper with not the
> > slightest hint of sticking to the PCB.  The toner is
> > standard HP 4127X, and the laminator is set to its highest
> > setting of about 170 degrees Celsius (just under 340F).
> > 
> > What am I doing wrong?
> > 
> > Thanks
> > Dave
>

Re: Toner transfer failure

2011-03-26 by David C. Partridge

What temperature do you have your laminator set to please?

If it is within the range of my good laminator, I may just buy a 1320 just for PCB work.

D.

--- In Homebrew_PCBs@yahoogroups.com, "bebx2000" <bebx2000@...> wrote:
Show quoted textHide quoted text
>
> 
> 
> I use two Hp Laserjets, a 1320 and a 1102W and never have a problem with the toner fusing. The latter is a cheap wireless that routinely goes on sale for $99 at Staples.
> 
> Baxter
> 
> --- In Homebrew_PCBs@yahoogroups.com, "David C. Partridge" <david.partridge@> wrote:
> >
> > Oh bother!  I really don't want to have to buy another laser printer!  Does anyone know if there is a lower melting point toner (another brand perhaps) that will work with the HP 4000 series LaserJets?
>

Re: Toner transfer failure

2011-03-27 by bebx2000

David,

I have a Tamerica LP-120 laminator with a temperature dial. I set it to 160 deg C (max temperature). I let it stabilize for 15 min. and then laminate for 8 passes, rotating the board 90 deg. each pass. After 8 passes, the board is fairly hot to the touch.

Baxter

--- In Homebrew_PCBs@yahoogroups.com, "David C. Partridge" <david.partridge@...> wrote:
Show quoted textHide quoted text
>
> What temperature do you have your laminator set to please?
> 
> If it is within the range of my good laminator, I may just buy a 1320 just for PCB work.
>

Re: Toner transfer failure

2011-03-27 by bebx2000

I posted this a while back relative to toner adhesion and cleaning boards,

http://tech.groups.yahoo.com/group/Homebrew_PCBs/message/26984

It did not create much interest. However, it is the method I now use and I don't bother with cleaning boards.

N.B. I use HP Presentation Paper Q2546A

Baxter

--- In Homebrew_PCBs@yahoogroups.com, "David C. Partridge" <david.partridge@...> wrote:
Show quoted textHide quoted text
>
> I printed the top and bottom layouts onto glossy magazine paper on an HP LJ 4050, and they looked just fine.  I lined them up and taped them to the PCB, and fed the sandwich through the laminator many times, but the toner stayed firmly stuck to the paper with not the slightest hint of sticking to the PCB.  The toner is standard HP 4127X, and the laminator is set to its highest setting of about 170 degrees Celsius (just under 340F).
> 
> What am I doing wrong?
> 
> Thanks
> Dave
>