6 11 月, 2007 › 色彩管理 › Administrator › no comments ›
從事平面出版的人員在印刷前總要看一次打樣，打樣又分傅統打樣與數位打樣;基於成本與效率的考量,數位打樣的使用已經相當普遍,而主要設備就是噴墨印表機，輸出中心為達到某種程度的數位打樣品質(如lSO 12647-2，以下直稱ISO)所投資的軟硬體成本從幾萬元到百萬元都有，耗材一定是原廠耗材(墨水應該都會是原廠，紙張則不一定)。
平面出版業相關人員，不管是大單位還是個人，專家級的或是學生，手邊總會有部不管高階或低階的噴墨印表機.，同樣都是彩色噴墨印表機，我們手邊的機器有可能達到數位打樣的品質嗎?
不囉嗦，我手邊有一部Canon iP4500，4000出頭的價格，算是中低階的等級吧，
另外我想大家都明白，印表機其實不貴，低階的機器一千多就有了，倒是1cc 32元(Canon CLI-8Y, $420/13ml)的墨水價格才是最大的負擔，因此這次的測試除了機器是中低階之外，墨水採用便宜很多的副廠墨水(1cc <5元)。這次目標以ISO 12647-2為標的，在最節省的設備之下，透過色彩管理的運用，希望起碼能達成 Fogra Media wedge 46 格色塊的檢驗規範: 紙張色差 < =3， 平均色差< =4， 最大色差< =10， 主色(CMYK)色差 < =5。
機器定下來後，影響色彩呈現的因數我把它分成三大項:紙張，墨水及控制方式。
紙張方面我從輸出中心裁來一些他們數位打樣用的銅版塗佈紙，第一個要確定的是紙張白度的落點，這次找的紙張白度落在: ( 93, 0, -0) vs. ISO 12647-2 type 1 paper (95,0,-2)還算能符合Fogra的要求(色差 < =3)，影響可能會是hi-Light (0%-10%) 的表現會被犧牲一些。
墨水方面為副廠墨水，尋找副廠墨水的基本要求不外乎穩定性與足夠的色域兩項要求；其實去年也做過相同的嘗試，那家XX stone 的墨水第一批數據還不錯，第二批就完全走樣，實在做不下去，整個想法就這麼擱置下來。這次測試的墨水初期的數據還算可以，但也還不致於下定論，總要有個三個批次以上的數據才比較能讓人放心。
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Tags: Color management system, 色彩管理, inkjet, 印表機, 數位樣
21 7 月, 2007 › Uncategorized › Administrator › no comments ›
- Stop the mysqld daemon process.
- Start the mysqld daemon process with the –skip-grant-tables option.
- Start the mysql client with the -u root option.
- Execute the UPDATE mysql.user SET Password=PASSWORD(‘password’) WHERE User=’root’;
- Execute the FLUSH PRIVILEGES; command.
16 7 月, 2007 › 色彩管理, Uncategorized › Administrator › no comments ›
以最大宗的4×6相片市場來說:: 4x300ppi x 6x300ppi = 216萬像數::2百萬像數相機的出現就在那取代底片的邊緣,那是幾年前的事了?!
我02年的Konica KD-400 (2304 x 1704)::::約 8×6 capable:::::對一般消費者而言,135底片可被ccd sensor 完成取代::::::::::::相片產業第一次翻盤
影響對象
the one who do the film: Kodak, Fujifilm, Konica, Agfa….
the CCD Sensor: Sony, Panasonic, Fujifilm, Canon, Samsung, Kodak?….
目前手上有兩部相機
Pentax K100D 600萬相數:: 3008ppi x 2008ppi 理論上可支援 10 inch x 7 inch, 相紙8×10輸出 應該足夠
Canon SD550 700 萬相數 3072 x 2304 理論上可支援 10 inch x 8 inch
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Tags: 相片, 色彩管理, inkjet, 印表機, 噴墨, 數位相機
27 9 月, 2006 › 色彩管理 › Administrator › no comments ›
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在低階噴墨印表機做數位打樣(Digital
proof on consumer inkjet printer)
對象:
平面設計公司,平面設計師
現象:
平面出版業以數位打樣(噴墨,彩色雷射)來取代傳統印刷打樣己是確立的現象,然而目前要達到夠qualify的數位樣所需的成本仍相當高,以目前輸出中心所架設的數位樣設備少則數十萬多則上百萬,以某家公司的典型設備為例:一部Epson 9800: 19萬，EFI ColorProof
13 萬,，若要自己作icc profile, 加上eyeone pro with profilemaker publish, 再加上20萬, 如此已是50萬的設置了,這已經不是一般設計公司願意負擔的成本,更不必說是個人設計師了；雖然設計公司未必用到如9800那樣大的format，若以epson 4800加上RIP軟體,由廠商提供內定icc profile, 十來萬的基本門檻是跑不掉的
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Tags: Color management system, 色彩管理, 印表機, 噴墨
17 1 月, 2006 › Uncategorized › Administrator › no comments ›
Happy New year!!
20 10 月, 2005 › 工作 › Administrator › no comments ›
http://repair4laptop.org/disassembly_apple.html
PB3400 http://www.genchan.com/mac/pb34kbd.html
15 10 月, 2005 › WebServer › Administrator › no comments ›
put libpdf_php.so into /usr/lib and /usr/local/php/include
24 8 月, 2005 › WebServer › Administrator › no comments ›
Spend whole day to fix Mysql & php problem on Tiger & Win2003
1.Mysql cannot start up on Tiger
Sol.
type cd /usr/local/mysql
type sudo chown -R mysql data/,
enter your Mac OS X account password when asked for it.
To start the server, issue
sudo echo
first, then type
sudo ./bin/mysqld_safe &
Use it with /usr/local/mysql/bin/mysql test
2. Php 4.2 code won’t work on php4.3 on Tiger.
a. use /'”/
21 7 月, 2005 › Uncategorized › Administrator › no comments ›
a link
End of File Errors happen in pretty well every OS I’ve used (Wintel, UNIX,
Mac, Atari and Commodore AMiga)… from time to time. What happens is that
the file mapping file gets screwed (by a few bad bits, or an interrupted
save or whatever) and this then sets attributes for that file which can be
way outta whack. For example if could tell the OS that the file is 2000
terabytes long, and contained in sectors that don’t exist on the volume in
question.
When the time comes to access the file … the OS takes this screwed up
info and compares it to the volume characteristics it has on file and, in
the MacOS and Wintel case (no version fo UNIX I’ve used treats this as a
fatal error) … crashes big-time because the conflict can’t be resolved.
Solution … do regular file integrity checks using Nortons, TechTool,
Apple’s Disk First Aid etc … and watch what they tell you. If they tell
you a file is corrupted by a bad EOF don’t boot it. Try to repair it, and
if that’s not successful trash the puppy. Everyone does back-ups of
crucial data files, so it should simply be a matter of copying it back
onto the machine from your backup.
Often on the Mac these file related errors happen in Preference or app
associated files that are loaded when the app loads … which can be a
bummer. But regular file integrity checks tend to nail the suckers as they
appear.
If the file being corrupted is always the same, or if the files concerned
are being corrupted under the same sets of circumstances then you may have
either an extension conflict or a ‘bad’ appplication. Also, check that
you’ve installed all the OS and app bug-fixes from Apple and the
application suppliers)
6 7 月, 2005 › 色彩管理 › Administrator › no comments ›
科億印刷廠的色彩管理正進行中，還很多問題還沒法正確解答，首先GRETAG濃度計讀數比Spectrolino約多了0.2，還未釐清原因，這樣子我很難訂下一個濃度值供印刷機依循，偏光鏡的使用可能是原因之一，還是多查証一下!
再來是設定值應該是多少?我可以給一組ISO的值，參考前面的Link，從各方面看來，似乎不那麼嚴謹，再者科億容許我做這各方面的要求嗎?先就讓他們自已印，也讓我測一下我的評分系統具多少意義。
再個問題就是色彩管理必須也要是光源管理，看來還有的搞，控制台是D50，看樣室是亮度還不足的日光灯，就玩玩吧!就靠Profi1eMaker與Editor的能力，看能搞出些什麼成果
Use Eye-One Share to get the fluorescent spectrum, put it in “/measurement/light/” then use the light source to create profile. It WORK! I got better result than D50 light source when I viewing under fluorescent light.
