Poor quality scanning

Hi
Any time I scan through the document feeder I get two ugly black lines down the side of the page. Is there a way to fix this e.g. clean the scanner head? It is not a problem on flatbed scanning.
Thanks.
J

Hi @JSkillington ,
I understand that you are having issues when scanning from the ADF, you are getting two black lines. I will certainly do my best to help you.
I would do a hard reset to see if that will resolve the issue.
Leave the printer on and unplug the power cable from the printer and wall outlet for 60 seconds.
Then reconnect the power cable to the printer and wall outlet rather than a surge protector.
This ensures the printer is receiving full power and may help this situation.
(number one cause of black lines in the scans)
Try these steps to see if it will resolve the issue. This document applies to scanning also. Horizontal Lines on a Copy.
If you need further assistance, just let me know.
Have a great day!
Thank You.
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos Thumbs Up" on the right to say “Thanks” for helping!
Gemini02
I work on behalf of HP

Similar Messages

Why does my brand new HP Officejet 5740 have extremely poor quality scan results?

My brand new HP Officejet 5740 has extremely poor quality scan results!
Excessive and unacceptable amounts of white specs appear in the resulting jpegs, of what are perfectly clean, orignal, dark, documents, pages and photos, when placed into the scanner. Why is this happening???
Has anyone else experienced this problem? If so, how did you resolve it?

Hi @mpstone1,
Welcome to the HP Support Forums! I see you are not happy with the scan quality on your new HP Officejet 5740, when you scan something you are getting alot of white specs.
I would like you to first perform a Hard Reset on the OJ 5740:
1. Unplug all cables and memory cards from the printer. Unplug the power cord, directly from the back of the printer while the printer is still turned on.
2. Unplug the other end of the cord from the power source.
3. If there is a power module on the power cord, disconnect one end and reconnect it.
4. After 60 seconds, plug the cord directly into a wall outlet (not a surge protector or battery backup as they can cause the printer to lose basic functionality over time).
5. Plug the power cord into the back of the printer.
6. The printer should automatically power back up. If it doesn't, turn it on with the power button.
7. Try making a photocopy (if your printer is an all-in-on printer) before connecting any other cables to the printer.
8. Connect any other needed cables to the printer.
Please continue here: Vertical Bands, Lines, or Streaks in Copies, Faxes, or Scans, complete the steps listed, make sure the scanner lid is fully down when powering on, do not lift the lid until the printer is fully initialzied.
If after the troubleshooting has been done the copy quality has not improved, contact our technical support at 800-474-6836 as it may be the hardware and you would still be in warranty. If you live outside the US/Canada Region, please click the link below to get the support number for your region.
http://www8.hp.com/us/en/contact-hp/ww-phone-assist.html
I hope this helps!
HevnLgh
I work on behalf of HP
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos Thumbs Up" to the left of the reply button to say “Thanks” for helping!

ICA Scanner Driver gives poor quality scans Epson Perfection 1660 Photo

The controls on the ICA Scanner Driver for the Epson Perfection 1660 Photo scanner are very crude, and it's difficult if not impossible to get the quality I used to get with the previous Epson Scan driver. Where there used to be Levels, Curves, and Zoom controls, now there are only crude Brightness and Contrast sliders. Is there any way I can get more control over levels and curves, and zoom in on an image to fine tune the cropping, like I used to do with Epson Scan? Or will I have to buy a current model scanner? The Epson Scan program for the Perfection 1660 scanner is no longer compatible with Mac OS X 10.7.

I bought Vuescan 12 years ago, got the professional version. I have used it on Mac's and a PC or two. I have been through a dozen or more scanners over the years, upgraded OS's a hefty number of times as well. And it still works like a champ.
Best $40 I ever spent. (what it cost back then for Pro...)
You can go to his site, and try Vuescan for free before you buy. Not a big software company, just a guy who loves scanners, and his son. And he's been offering the software a long, long time, and updates the product constantly.
www.hamrick.com

Poor quality/customer service from Digital Services LLC (Microsoft's provider of Wallet Cards and etc.)

Hi All,
I recently chatted with MCP support to inform them of poor shoddy service by their provider of Wallet Cards. Has anyone else had any problems with quality/service with the below provider? If so who can I contact to report the problems I had with
them?
Below is a copy of the statement I provided to MCP support:
I ordered a wallet card quite awhile back. Upon delivery I discovered that it was very poor quality and some of the lettering "Solutions Associate" was very faint.
I contacted arvato digital services LLC to report it. They requested that I send them a scanned copy of the wallet card.
They then agreed to replace it. I was told that it would ship 12/17/2013 and after a month or so of not receiving it I contacted them again and Daniel apologized and said it had gotten lost in production.
I was then promised a ship date in January. I had to contact them again and I finally received it today 2/7/2014.
The papers that came with it said my credit card would be charged.
To summarize: I was shipped a poor quality card which took them over 2 months to replace,
no improvement on the card still looks like the first one they sent me and finally they said my card would be charged .... AGAIN?
I want Microsoft to know what very poor service arvato digital services LLC is providing to their Members and how I can get a quality card replacement without any additional charge.
I offered to send the second poor quality card received and also the back and forth emails requesting that they resolve the problem.
By the email time stamps they will see the very long length of time it has taken to resolve this issue and the fact that it is still not resolved.

Same here. I just received them today (21/02/2014). Very very disappointed.
I ordered the Solutions Expert & Specialist Card. Both are terrible beyond all recognition.
Both photos in the cards are blurry, unlike the ones I previewed in the design page. Just like you said, the lettering ('Solutions Expert' & 'Specialist') on BOTH cards are very faint.
I even ordered the 'Specialist' card in German just for curiousity's sake.
On the bottom at the back of the card where you find the "Download the Tag reader app at: http://gettag.mobi" sentence, I found this incomplete (and perhaps just to show their level of incompetence) sentence:
aden Sie die Tag-Leseanwendung hier herunter: htt
Missing the first "L" and the incomplete "http://gettag.mobi"
First, you discontinued the MCM/MCSM program and the whole works last year. I know this is a very different thing and has a very big difference (and revenue). Now you showed the (lack of) care even for the tiniest bit of a Microsoft Wallet Card.
I see no use of contacting Arvato, just another time-wasting effort, third party subcontractor and all that.
Guys, forewarned is forearmed.

Poor quality after days of rendering (AE CS5)

I bought an AE project file (VideoHive.net) and the first time I tied to use it things worked fine, although it took most of a day (9 hours) to render a 2 minute project. Then I made some changes (substituting pictures in the sample) and attempted to export it again. At high quality 1080 AVI, it took 52 hours and the result was a jittery poor quality mess. So then I rendered the project again at 720 as an MP4 and it only took 37 hours, but this time it was even worse and even more unusable.Same machien, same memory assignment, same project file.
I don't know if I was supposed to render in RAM first (I may hve done that before the first rander just to see what it looked like) or what combination of settings I should be using or if I should be sending it directly to Premiere (although I can't seem to make that work). I think my first attempt was an MOV which I imported into Pr with no problem and it only took 9 hours to render. Same machine, same project. This should be an adequate machine (6 core, 16 GB) with 80% memory assigned to CS5. I've spent hours on Lynda.com watching all the AE courses but they don't seem to include the minor details and steps. They assume the viewer can figure that out, I guess.
What is the correct process to follow (RAM first?), what render file should I be using and how long should it take for a (less than) 2 minute finished AE project?

TimeRemapper,
Here's the project: http://videohive.net/item/photo-album/94595
I have it running on 5 of the 6 processors using 13 GB of the RAM.
Rendering to local SATA drive, same as the source files.
I have no problem with the 9 hours, but I do have a problem with 3 days and
a jumpy mess as the result.
The images I switched out are mostly smaller than the ones in the sampler
and about the same as the scanned pictures I used in my trial run.
Should I try to export to my Premiere project or export to a file to bring
back into Pr? (added to video interview). If I export it, it needs to be 720
for standard DVD - What is the best format and settings for that? AVI? MOV?
MP4? Obviously what I selected was outside of what the machine could
adequately generate.
Tim

Why am i getting poor quality photo prints after installing lion using canon pixma 6120?

After installing Lion, I began experiencing poor quality photo prints on my Canon Pixma 6120 printer. Prior to Lion, my picture prints were all high quality. Now, anything black in the picture is faded.

Lion should not cause the blacks to print faded. The printer drivers used by Snow Leopard and Leopard are the same version as that used by Lion.
For starters I suggest you check that you have the latest version installed. This Apple KB article shows the MG6100 series has v10.51.2.0 as the latest version.
I also recommend you do a Nozzle test print. This can be executed from the MG6120 control panel or via the Printer Utilties window (via Print & Scan, select the printer and then open Options & Supplies and then select the Utilties tab).
If the nozzle test print is okay but the blacks still look faded when printing photos (note the printer has two black ink tanks - one for photos and one for text) then try a reset of the printing system. This will remove the MG6120 from the Print & Scan pane but not the supporting drivers. So you will only have to add the printer again.

Poor quality printing

About a year ago I remember seeing frequent complaints about the poor quality printing in photo books.
Is anyone else still having problems? I just recieved 2 books and I am just unimpressed (and quite disappointed) with the print quality.
One is a duplicate of a book I had printed through My Publisher last year and there is a night and day difference. The My Publisher book looks far superior.
I was having difficulty with My Publisher so I decided to give Apple's service a try.
I'm shooting with an 8mp dSLR camera (Canon) so I should have no issue with 8x10 prints. My scanned images were all at 300dpi.
Many of the photos in the book I've had printed locally and there is a big quality difference.
Is anyone seeing this problem or did I just get unlucky?
THANKS!

Welcome to the Apple Discussions. The Apple book cannot compete with your printing of the photos or pages on your own inkjet printer or thru a photofinisher. It uses a different type of printer. The current books (all sizes) are printed at 300 dpi. Here's what Apple send me regarding the books printing and material quality:
I contacted Apple and asked for information that I could pass on. Here's the reply I received from Apple:
"Thank you for contacting the Apple Print Products Customer Service.
I understand that you would like to know the printing process that is used and the color mode the files should be in, so you can better advise users in the iPhoto forum.
iPhoto version 4 or later, allows you to import and print files through the Apple Print Product service as RGB, grayscale, or CMYK color space. JPEG files with RGB color space are recommended for best results.
While iPhoto 2 can import files of various formats, including RGB color, grayscale, and CMYK, this version requires JPEG files with RGB color space when printing photos and books.
For more information regarding iPhoto 2, please visit the following article:
iPhoto: Color, Black and White Prints Appear Garbled or Distorted
For more information regarding iPhoto 5, please visit the following article:
http://docs.info.apple.com/article.html?artnum=165501
Here are some of the technical specifications for the books, cards, and calendars. I hope this gives you an idea about their quality and form.
BOOKS
All iPhoto books are printed using acid-free paper for long-lasting image quality. The photos are printed at a high resolution (300DPI if you use iPhoto 6). There is no external modification--such as sharpening or contrast adjustment--of the photos; what you see in the application is what is printed in the book.
Hardcovers Books
The cover is hard-bound and covered in linen. You select the linen color during the book-ordering process. The hardcover books have a solid, stiff binding that is glued and crimped. The internal pages, measuring 8.5 x 11 inches, are printed on McCoy 100# Text Gloss paper stock.
Softcover Books
The softcover books come in three sizes:
- Large 8.5 x 11 inches
- Medium 6 x 8 inches
- Small 2.6 x 3.5 inches
All of the softcover books have internal pages that are printed on McCoy 100# Text Gloss paper stock. The large softcover book has a white cover (Kromekoteplus Folding Cover, 16 point) with a cutout on the front that reveals the cover-page photo in the book. The covers for the medium and small softcover books have the cover image and title printed directly on the cover. All of the softcover books have a glued binding and feature a thick cover of McCoy 100# Cover Gloss paper stock.
CARDS
All cards are printed on McCoy 120# Silk Cover paper stock. The postcards measure 4 x 6 inches, and the greeting cards measure 5 x 7inches.
CALENDARS
All calendars measure 8 x 10 inches and are printed on McCoy 100# Silk Cover paper stock.
To ensure the best print quality, we have chosen to use Kodak NexPress technology. The press uses a dry toner, which is fused to the surface of the paper. Please see NexPress' site for more information:
KODAK NEXPRESS 2500 Digital Production Color Press
I hope you find this information helpful in answering questions on the iPhoto forum."
Do you Twango?
TIP: For insurance against the iPhoto database corruption that many users have experienced I recommend making a backup copy of the Library6.iPhoto database file and keep it current. If problems crop up where iPhoto suddenly can't see any photos or thinks there are no photos in the library, replacing the working Library6.iPhoto file with the backup will often get the library back. By keeping it current I mean backup after each import and/or any serious editing or work on books, slideshows, calendars, cards, etc. That insures that if a problem pops up and you do need to replace the database file, you'll retain all those efforts. It doesn't take long to make the backup and it's good insurance.
I've written an Automator workflow application (requires Tiger), iPhoto dB File Backup, that will copy the selected Library6.iPhoto file from your iPhoto Library folder to the Pictures folder, replacing any previous version of it. You can download it at Toad's Cellar. Be sure to read the Read Me pdf file.
MBP 2.16Ghz; G5 Dual Core 2GHz, 2G RAM ea, 250G HD; G4 Dual 1Ghz, 1.5G RAM; Mac OS X (10.4.10) 22" LCD, 710G FW HDs, Canon: SD700IS/i850/LIDE 50, Epson R200, 30G iPod, 2G Nano

Poor quality Skype Video Calls with good connectio...

suffering with Poor quality Skype Video Calls and also voice.
My connection is 8 mb Download and .6mp upload, my wife in another country has Fiber so is alot faster again.
I am using Windows 8.1 and also a Ipad Air, same issues on both.
The Windows Pc has a nice microsoft Hd webcam (not one of the cheapones) using a i7 pc with 16g of Ram and a Gaming Graphics Card.
There is very little software on the pc, a couple of games, no itunes, Downloading software and very little running in the background. I use Window Defender and Anti virus and have recently done a re instal of windows and everything is updated driver and software wise, including skype.
The Ipad is the Apple air.
When connecting to my Wife in the Uk the reception isnt great picture wise and after a little while gets bad and also disconects alot and then comes back with a worse picture and call quality. I have even had the bad connection pop up. I have ran speed tests at these points and all are showing fine.
I also have a issue when calling my Dads land line in the uk where he has trouble hearing what im saying, muffled and echos
I am a premium paying customer and started to get a bit frustrated.

@Furgan, in which country are you located? Some countries and ISP-s are shaping Skype traffic. One known country is Saudi Arabia for example.
If would help us if you could please reproduce the issue and provide logs as described in this link https://support.skype.com/en/faq/FA12321/how-do-i-create-log-files under Skype for Windows Desktop and attach it to your post?
Thank you

Camtasia Poor Quality in Premiere CS4 Export

I am a PC user. One of my clients uses Mac and Camtasia to screen capture his software program, which I need to integrate into a video I am making for his company. The MP4 Camptasia file he sends me looks good. I bring the file into Premiere to edit it, but when I export it, the clip done with Camtasia has very poor quality, while the footage I shot with my video camera looks great.
Specs:
Camera: HMC40, PH mode 1080/60i (MPEG-4 AVC/H.264 compression).
PC: i7 quad-core 64-bit running Windows 7 Professional 64-bit, 8 GB RAM.
Editor: Premiere CS4 in the Adobe CS4 Master Collection .
New Sequence setup in Premiere: AVCHD > 1080i > AVCHD 1080i30 (60i) Anamorphic.
Premiere’s export settings:
Format: MPEG2
Preset: HDTV 1080p 29.97 High Quality
Multiplexer tab > Bitrate and Buffering Details: Variable
Video Tab > Basic Video Settings > Quality: 5
Field Order > None (progressive)
Profile > Main
Bitrate Settings: Bitrate Encoding: VBR 2Pass
Minimum Bitrate: 4 (default)
Target Bitrate: 15 (default)
Maximum Bitrate: 18.5 (default)
GOP Settings > M Frames: 3 (default)
N Frames: 15 (default)
Output summary: NTSC, 1920X1080, 29.97 drop frame (fps), Progressive, Quality 5.0
Note in general: I found that if I set the Bitrate Encoding at VBR 1Pass, I got glitches sporadically.Using VBR 2Pass has solved this.
My question about the Camtasia clip:
1) How can I get the Camtasia footage to be as sharp in the export as in the original?
Other questions in general:
2) Are my New Sequence setting in Premiere correct? AVCHD > 1080i > AVCHD 1080i30 (60i) Anamorphic
3) Is my choice to export as MPEG2, HDTV 1080p 29.97 High Quality preset, the best for the footage I shoot?
4) Is my choice to set the Multiplexer tab > Bitrate and Buffering Details at ‘Variable’ the best?
5) Do my Bitrate and GOP settings need adjustment?
6) Should my Export field order be Upper instead of Progressive?

function(){return A.apply(null,[this].concat($A(arguments)))}
The frame rate is 1038 X 882
That is a very odd frame size, and one that probably won't work well no matter what workflow you use. You asked:
function(){return A.apply(null,[this].concat($A(arguments)))}
how could he better capture and export to match my workflow?
Have him capture and export to match your desired export frame size for the finished project.
function(){return A.apply(null,[this].concat($A(arguments)))}
How would you suggest I change my workflow to handle the interlaced and progressive issue?
I can't answer that until I know exactly how you intend to deliver your finished video. Any answers to your other questions will also likely depend on your intended delivery format and media.
-Jeff

Extreme poor quality in full screen preview and exported movie

I have spend evenings and evenings to create the content of a project.
After dealing with error -108 and extreme poor quality in full screen preview and in exported movies (extreme stuttering) I decided to install my iMac new again.
The error -108 disappeared, but the extreme stuttering still remained in full screen preview and in exported movies.
If I make the preview screen in the iMovie browser as big as possible there is nothing to see of any stuttering.
Now I am getting pretty annoyed and have no clue what to do anymore (how to solve this problem) .....
Anyone any suggestion ?
The orginal video was recorded with a Panasonic HD camcorder.
I do have a mid 2011 iMac with 16GB ram and 256GB SSD and 1TB HD with a complete clean installation
of OS X Lion and iLife. This configuration should be enough to create a proper movie :-(

mantralightroom wrote:
why is it this option disabled? do the generate monitor sized previews increase a lot the cache a lot!
Potentially, yes. The standard Preview is 1024 pixels, longest size. Some people (like Omke) have displays 2560 pixels longest side, potentially increasing file size by over 500%.

DVD poor quality

I just created a DVD but the video quality is too poor to use. I get 'ghosting' or flicker with motion, which is 99% of the content.
A client gave me 14 home-made DVDs containing video of high school basketball games and asked me to create a highlight video. I edited the VOB files in Premiere CS4 (4.1.0) to pull highlights and compile them into a single highlight DVD.
I exported the video to Adobe Media Encoder (4.0.0.374) to create a F4V file to be used on websites. I used the standard preset. The quality of the F4V video is good.
I then used Adobe Dynamic Link to export to Encore CS4 (4.0.0.258). I burned a DVD and the result was a DVD with poor quality.
There is a brief clip in the highlight video that I recorded myself of the athlete providing a short introduction of himself. That clip and the still titles I made look good on the DVD, but the highlight clips from the client's DVDs are very poor.
From some of the discussions I've already read in this forum, I assume I need to change a field option or the Anti-flicker value under Effect Controls or something similar, but haven't figured out what yet. Also, when I make changes to values, do I have to burn a DVD to see the result of the change or is there a better way to preview?
Thanks for your help!
Dan

A client gave me 14 home-made DVDs containing video of high school basketball games and asked me to create a highlight video. I edited the VOB files in Premiere CS4 (4.1.0) to pull highlights and compile them into a single highlight DVD.
It is very likely that the double MPEG-2 encoding is degrading the material too much. Is it possible to get back to the client's original tapes? That would save one MPEG-2 compression. Otherwise, what you have is probably as good as it will get.
Good luck,
Hunt

How do I delete unwanted photos (duplicates, poor quality How do I delete unwanted photos (duplicates, poor quality or old ones thator oones that I just don't want) from my IPhoto Library.I followed the instruction from Help and neither suggestion worked.

How do I delete unwanted photos (duplicates, poor quality or old ones that I just don't want) from my IPhoto Library.I followed the instruction from Help and neither suggestion worked.
Tried to select and press delete key...didn't work
Tried to select, press arrow on lower right and move to trash.. didn't work

select a photo in an event and either drag it to the iPhoto trash or press the delete key - then empty theiPhoto trash an dthe system trash and the photo is totally gone from the system
LN

Poor quality of AVI files playback in Adobe Premier Pro CS6

I tried to play back AVI files loaded from Canon GL2 camera by Premier Pro 2.0. In Adobe Premier Pro CS6 playback I got jitters and poor quality - what is the problem?

1st - More information needed for someone to help... please click below and provide the requested information
-PPro Information FAQ http://forums.adobe.com/message/4200840
2nd - Exactly what is inside the AVI file?
Codec & Format information, with 2 links inside to read
-read both links in reply #1 http://forums.adobe.com/thread/1270588
Report back with the codec details of your file, use the programs below... A screen shot works well to SHOW people what you are doing
http://forums.adobe.com/thread/592070?tstart=30 for screen shot instructions
For PC http://mediainfo.sourceforge.net/en or http://www.headbands.com/gspot/
For Mac http://mediainspector.massanti.com/

Poor quality text in PDF

I am using Acrobat pro X to produce an online brochure. I started producing the brochure in Corel draw using A4 paper size in landscape mode. When I created the PDF by the print command the general quality was very poor, both graphics and text. I experimented with various settings increasing the quality settings for images but it didn't seem to have any significant effect. I then tried placing some of the elements in a Word document and creating a PDF from this document, and again I found that the results were unsatisfactory, a bit better than from Corel but not very good. I have converted many Word documents to PDF in the past without problems. I started a new Word document and this time copied a template for a landscape brochure from Microsoft. This was already populated with some Text-and-Graphics. When I created a PDF from this it was quite good. It was not clear to me what the difference between my basic word document and this new one was. I went through the documents’ settings with a fine tooth comb and the only one I could find was different was the paper size and orientation. I then copied some of my graphics and text to the word brochure document, and this to converted nicely to PDF. I took a note of what appeared to be a somewhat unusual paper size and copied this to the Corel document. When I created a PDF it was now significantly better all the paper size was wrong. I went back from scratch with both the word document and the Corel draw document (those which produce bad PDF files) and carefully made sure that the paper size and orientation in the document matched the PDF settings. But the result was still poor in this case. It is not clear to me what is causing the problem although it does seem to be mainly text, the graphics are often okay. The text however is extremely patchy looking and very poor quality.
In the Acrobat settings I started with "high quality print" default setting and edited this. When I selected the fonts section there were no fonts selected for embedding. This surprised me as I would have thought high-quality print would automatically embedded all fonts. I selected the fonts in my document and embedded them and saved the settings, but when I went out of this dialogue box and straight back in it showed up with no embedded fonts. What's happening here? Is it for getting about my font selection? Or does this dialogue box when you re-enter it not reflect the current settings? Furthermore when I completed my modifications to the "high-quality print" default settings it asked me to save them as a new job options file which I did, but when I go to print a second time it never gives me the option of selecting these saved settings.
I have tried almost every permutation and combination of settings page sizes et cetera and I now tearing my hair out trying to figure out how to simply get a reasonable quality PDF file. Any assistance on these matters would be greatly appreciated.

Hi Michael
I am using Corel V 13 and Windows 7. The issue is not confined to Corel as I am also getting poor results often with Word as described. I also need to know about the font embedding as described above. Is it the case that if the fonts are embedded this
guarantees they fonts display sharply in the PDF? i.e. do the scatty fonts in the PDF prove I am not getting embedded fonts?
Corel does have a printer driver compatibility setting where you can set the target printer, but the PDF virtual printer is not available in the list.
Thanks
Murray

Saving a Project In Pages, Images Poor Quality in PDF

I have just purchased IWork 09, i am new to pages and so far find the software very handy and easy to use to make very attractive documents.
i have one dilemma though.
i save a (e.g.) poster in pages, but when i go to open it in PDF Preview, the images that i have inputted into the document are distorted or of a poor quality, when i open them in pages they are fine?.... also when i go 2 open the saved document in Adobe Reader 9, it wont open? i tried taking frames and shadows etc out just in case they are not supported, like in MS Word but still no luck. i have to send flyers for advertizment via e-mail to clients who are more than likely using Windows Xp or Vista.
if some one could help with
1. Getting my images to stay good quality
2. opening it in adobe 9
it would be very much appreciated
jimbest

You can not see which programs have been involved in each compression, but as far as I know, at least some programs store information about both themselves (last edited by) and the compression level in the exif/iptc data.
The right way to work is to get as much data as possible off the colour capture in high bit and do the exposure correction getting into a normalised colour space either still in high bit or in scaled down 8 bit to save space.
The pixels should be left alone from this phase and out. It is not necessary to change a single source pixel either in matching to the display, the printer or the press. All of this is done on the fly in memory and not be changing the pixels in the disk-based image document.
As interchange file format for corrected colour captures stored in the normalised colour space, either use a linearised RGB space or high-bit CIELab. The file format should be lossless TIFF and not lossy JPEG (the way JPEG works internally is lossy by definition).
Live Picture and Apple Aperture are alike in the way they work. Rather than taking the pixels into memory for correction, which is they way Photoshop worked, they construct a colour managed proxy for manipulation and then provide for a rendering that is non-destructive.
Live Picture required ColorSync 2 and Apple Aperture is unable to work without colour management for the same set of reasons. Apple Pages is unable to work without colour management for the same set of reasons, although there are additional reasons for Apple Pages.
Just my ten cents,
/hh

Poor quality scanning

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