好厉害的感觉

看过一个更NB的，直接用投影仪来做固化...
用激光扫的话振镜精度不好保证，DIY不容易做到，theta-f透镜也不便宜。
看了他们官网，他用的光敏树脂也是自己调配的，原料不公公开，需要从他那买，很贵。

B9Creator用投影仪
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Please help us take DIY 3D Printing to the next level, support this open source photo-initiated polymer resin based 3D printing system!
[list]Launched:May 10, 2012[/li]Funding ended:Jun 12, 2012[/li]Remind me


[/li][/list]

(Production Prototype In Action)
Color Voting Update - 06/11/12 at 6:11 AM MST
The Voting is Over, we have a winner!  Black - 32, Blue -11, Clear - 9, Red - 2, Gold - 2, Green - 1    
At last!
A 3D Printer that delivers the resolution you crave.
Right from the beginning I wanted the B9Creator to be different.  Anodized aluminum construction, stainless steel hardware, many thoughtful features that enhance normal operation... all these things set the B9Creator apart from the DIY 3D Printer herd.  But when it comes to printing complex, detailed and fragile objects, this is where the B9Creator really shines bright!

DIY 3D Printers based upon the Fused Deposition Modeling (FDM) concept simply can not match the higher resolution capability of the B9Creator.  We utilize a powerful Digital Light Processing (DLP) projector to shine a 1024 x 768 pixel image onto a layer of photo-initiated polymer resin.  The result is a quick solid cure of the entire layer in one operation.  The layer thickness is typically 100 microns but your model can be sliced even thinner if you need even higher resolution.  Note that 100 microns is .1 mm or about 0.004"
How about speed?  Anywhere from 12-20 mm per hour and that's independent of the object's x-y density (unlike FDM which slows down as the x-y fill density increases).
"But how much does that resin cost?" The Eiffel Tower model pictured here weighs about 12 grams.  Our resin costs about 10 cents per gram, making the material costs to print the Eiffel Tower just $1.20!
As you will see below, the project development is already well along and is about set for production. All we need now is your support and a large initial order to keep the costs reasonable.
So... What will you create?

(Eiffel Tower model printed at 100 micron resolution)
Here's "The PLAN"
1 - Develop a new type of high resolution 3DPrinter...   DONE!
I began working on this concept last fall.  At times it felt like it might never work... but it did!

(Working on resin development)

(Trying out different ideas)

(Youtube video describing early design concept)

(Final R&D prototype.. it works!)
2 - Engineer a solid production design based on the R&D...  DONE!

(Production design using CAD)

(Final production design, CAD rendering)
3 - Fabricate and assemble a production prototype... DONE!

(The assembled production prototype)
4 - Secure professional vendors to fabricate components,bag the hardware kit, build circuitboards and wiring harnesses...  DONE!

(Custom components fabricated by my US based vendors)
What's next?
- Order everything needed to build 10 demo units to verifythe quality, labeling, fit & finish of vendor supplied components.  DONE, waiting for parts to arrive.
- Once vendor components arrive, assemble the 10 productionunits and test, test and test again!  Feedback any required changes to my vendors and finalize product. Estimated completion: May 31st.
- At the completion of our Kickstarter campaign (June 12th),order all required components and materials. Begin shipping Resin to customers NLT June 30th.
- Assemble and ship kits and completed units starting assoon as components arrive.  Priority willbe in order of pledge date with early backers receiving their items first.
- Complete shipping of all items no later than August 31st, 2012.
- Once obligations to supporters are met, I will post all originalhardware (CAD) files and software (source code) publically under an open source license.
Our supply chain is forged from strong links!
The key to successful completion of this project is our excellent partnerships withexperienced and reliable vendors, which are based here in the US.  From hardware to electronics tofabrication, we enjoy "time tested" relationships with our suppliers.  This foundation will ensure we deliver a quality B9Creator3D printer or kit just as promised.  [i]Check out our past project testimonials:[/b]  XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX/XXXXXXXXXXXXXXXml
Read the FAQ
We have started a FAQ on our website and will do our best to keep it up to date as questions arise.  More FAQ's at the bottom of this page too!
Vote for you favorite color scheme!






"I love it when a plan comes together!"
All the objects below were created on the B9Creator prototype or pre-production prototype machines.
More images...  (visit the Gallery on our website for more)






Want more images...  visit the Gallery on our website!

典型的依靠低初期投入扩展用户规模的策略
先用低价，甚至可能低于成本销售打印机再依赖垄断耗材把钱赚回来

formlabs 已经被人告了，这个动了商业打印机的奶酪了，无数专利在等着他。

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Christian Lue 发表于2012-11-22 15:52:00 | 标签： 3D Systems 3D打印 Formlabs Kickstarter                                      

3D Systems一纸诉状将Formlabs和Kickstarter一同告上了法庭，称这两家公司侵犯了自己的专利权。
Formlabs是一个名为Form 1的低价3D打印机的生产商。多亏了stereolithography打印技术，Form 1这个小型3D打印设备才能够打印出专业级别的3D打印品。这个产品迅速在Kickstarter上取得了成功。但是，早在1997年，3D Systems就对stereolithography技术进行了专利注册，现在他们要向Formlabs和Kickstarter要求赔偿。
Form 1在登陆Kickstarter仅仅一周后，就获得了140万美元的融资，使它一度成为了Kickstarter上最成功的产品之一。Formlabs最终在Kickstarter上获得了2945885美元的资金，而据BBC报道，Kickstater则获得了5%的费用。
Formlabs使用了3D打印行业中的“黄金技术”stereolithography（立体光刻）技术，而没有使用传统技术。这个技术让用户在售价低廉的设备上也能打印出优秀的3D作品。
与Form 1售价相似的竞争对手，MakerBot制造的3D打印机，则使用了传统技术，因此没有收到3D Systems的起诉。
3D Systems对待他们的专利十分谨慎。他们表示，他们的专利在行业内十分知名，因此，“忽略了专利权”一说将无法让Form 1免于赔偿。
3D Systems还表示，Kickstarter通过Form 1审核的行为，“给3D Systems带来了直接且无法弥补的伤害”，因此，Kickstarter也成为了本次专利诉讼案中的被告之一。
目前Formlabs和Kickstarter都尚未就此事发表评论。

详情跟踪 注意很有意思的一点，520专利是一个提高精度的算法专利而非SLA技术本身，专利全文可以在google patents看。

訴狀下載    
Complaint_pclass_12_A327_3D_Systems_Inc_v._Formlabs.pdf 67.40KB PDF 77次下载 预览
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3D Printer專利侵權 3D Systems控Formlabs及經銷商Kickstarter

2012 年 11 月20日 ，3D Systems公司於美國南卡羅萊納州地方法院Rock Hill分所指控 Formlabs及經銷商Kickstarter的3D Printer產品侵害其專利權，尋求損害賠償。

本案系爭專利US5,597,520(以下稱520號專利)，專利名稱”立體光刻技術中多層次同步凝固”(“Simultaneous Multiple Layer Curing In Stereolithography”)，技術特徵原告自述為”將可轉換成形之材質暴露於增效刺激作用中，以形成物體的剖面層，進而達到3D物體狀態的光刻改良方法，該技術”雷射立體光刻技術”(stereolithographic techniques)生成3D成品，將3D模型的訊息輸出到模具或生產工作台產生立體實物，而不再需要利用工具修整模型。

    系爭專利:U.S. Patent No. 5597520
    Simultaneous Multiple Layer Curing In Stereolithography
    申請日期 : 1994 年 4 月 25 日
    許可日期 : 1997 年 1 月 28 日
    發明人 :  Dennis R. Smalley, Thomas J. Vorgitch, Chris R. Manners, Charles W. Hull, Stacie L. VanDorin
    現行美國專利分類號
    264/401; 118/429; 118/620; 118/712; 156/64; 156/273.3; 156/273.5; 156/275.5; 156/307.1; 156/378; 156/379.6; 250/492.1; 264/40.1;264/308; 345/419; 365/106; 365/107; 425/135; 425/174.4; 427/8; 427/510; 427/512; 427/553; 427/554; 427/555; 700/120

原告宣稱，被告Formlabs利用系爭技術，製造出名為”High Resolution Desktop 3D Printer”(以下稱3D Printer)之系爭產品，並於2012年9月在另一被告Kickstarter網站發起募資活動，以支持系爭產品的製造與行銷，原募款目標為$100,000美金，然而一個月後被告卻募得$2,945,885美金，遠超過原本設定目標，而系爭產品” 3D Printer”也在該活動賣出1028台。被告Formlabs及經銷商Kickstarter被控使用原告系爭技術產出機器招攬客戶，侵害520號專利第1及第23項請求項。

原告指出，被告Formlabs明知卻”故意視而不見”(willful blindness)的對520號專利侵權，原告引述多項人證與事證，包括被告在網路可藉由特定著名刊物或媒體，得知系爭產品3D Printer有侵害原告技術之虞，仍刻意迴避評估原告的專利組合(patent portfolio)，進而製造、使用、販賣、邀約販賣系爭產品而構成侵權。除直接侵權，被告行為亦被控誘使侵權(inducing infringement)及輔助侵權(contributory infringement)等侵權態樣。

就另一被告Kickstarter方面，原告認為Kickstarter在其網站上邀約販賣系爭產品3D Printer已達侵權行為標準，此外，原告亦點出Kickstarter在其網站使用說明(Guidelines)中，鼓勵他人製造出系爭產品3D Printer以供販賣，令系爭產品與其他裝置結合，達輔助侵害520號專利之效果。

3D Systems, Inc.位於美國加州，於南卡羅來納州(South Carolina)北部城市Rock Hill。

Formlabs, Inc.則位於麻薩諸塞州(Massachusetts)，近來以較平價高解析度的3D雷射光刻儀器聞名業界。

Kickstarter, Inc.設籍於達拉威州(Delaware)，營業處所位於紐約。Kickstarter採用的營業服務為，提供商品賣家一個爭取募款的平台，利用群眾集資方式，吸引眾人的贊助來催生、資助某一個產品或計畫。 (895字，表1)

表一、專利訴訟案件基本資料：3D Systems Inc., v. Formlabs, Inc. And Kickstarter, Inc.
訟案名稱     3D Systems Inc., v. Formlabs, Inc. And Kickstarter, Inc.
提告日期     2012.11.20
原告     3D Systems Inc.
被告     Formlabs, Inc. And Kickstarter, Inc.
案號     0:2012cv03323
訴訟法院     South Carolina District Court Rock Hill Office
系爭專利     US5,597,520
爭議產品     High Resolution Desktop 3D Printer

Source: 科技政策研究與資訊中心—科技產業資訊室整理，2012/12

關鍵字：3D Printer；Stereolithography(雷射立體光刻技術)

(科技產業資訊室－孫紹維撰稿，2012/12/7)

有个问题，悬空部分如何打印？随着树脂液面的上升或者液体的流动，原来打印的部分不会漂移么？
就比如帖子的第二个图，如帖子的第二个图，如果从下往上打印，小人的左手最后才跟身体连接起来，怎么保证不漂移？
如果是反过来底朝上的，那个叉子又怎么办？

这个模型如果从正面或者背面开始打印可以避免这个问题，但是如果一个图形无论从那个角度都有悬空的部分，那怎么办

悬空的部分要加支撑，有些打印软件能自动生成支撑，少数双喷头FDM机器用另外的可溶性材料做支撑。

哦哦，好方法呃..还有个问题...如果是SLS就是粉一层层铺还好弄，SLA的液面是怎么上升的？怎么样才能薄到25微米？表面张力什么的不会让他不均匀么？

有两种方法
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上照式：在液面进行固化，固化后零件下降，然后用刮板刮平液面。
下照式：在零件和透明容器底面之间固化，固化后零件上升，液体自行填充空隙。

Form1、B9Creator等个人机器全部是下照式。

谢谢！！！很详细！！！