빠른 답변: 구매자들이 비교하는 광개시제 369, 광개시제 1206, 그리고 광개시제 784 usually get the cleanest shortlist when they separate three different jobs instead of treating every dark imaging system as the same formulation problem. 광개시제 369 is the better starting point when the real issue is long-wave cure-through, darker optical paths, 그리고 photoresist or printing-plate systems that need stronger 350 to 380 nm response. 광개시제 1206 moves ahead when the job is really about high-sensitivity 365 nm imaging, ultra-thin films, 그리고 black-pigment-sensitive systems. 광개시제 784 becomes the stronger route when the process is tied to visible-light curing, 레이저 직접 이미징, 또는 higher-precision photosensitive layers.
That is the commercially useful split. These three products can all appear in imaging discussions, but they do not solve the same first-screen problem.
이 비교를 위한 별도의 페이지가 필요한 이유
Longchang already has live application pages for flexographic plates, dry film photoresists, 레이저 직접 이미징, 감광성 잉크, 그리고 printing plates. But buyers still hit a narrower decision point before they sample: should the first shortlist start with 369, 1206, or 784?
That decision intent is different from a single-application article. It sits one level higher, where teams are trying to map exposure source, pigment burden, film build, and imaging precision to the right first sample round.
What dark imaging-system buyers usually check first
Across dry film photoresist and other industrial photoimaging workflows, external process references consistently frame the selection problem around exposure wavelength, patterning method, resolution pressure, 그리고 chemical or process robustness. Public dry-film material from Asahi Kasei, for example, emphasizes LDI compatibility 및 high resolution, while general PCB photoimaging references describe practical splits between conventional UV exposure and 레이저 직접 이미징. That framing is useful here, even though product truth still comes from Longchang’s own product pages.
- Is the line centered on 365 nm sensitivity or on longer-wave cure-through?
- Is the imaging layer ultra-thin, or is light penetration becoming harder because the system is darker or more demanding?
- Does the process stay in conventional UV, or does it move toward visible-light or laser exposure?
- Is the system closer to black-sensitive photoresist, printing-plate imaging, or a more advanced precision photosensitive layer?
Those questions usually narrow the shortlist faster than comparing product names in the abstract.
Quick comparison table: 369 vs 1206 vs 784
| 구매 요인 | 369 | 1206 | 784 |
|---|---|---|---|
| 기업의 직접적인 지원을 통한 관련성 | Photoresist, solder mask inks, photopolymers for imaging applications, printing plates, dark-color systems | Photosensitive inks, electronic material inks, TFT-LCD color filters, black pigment systems, ultra-thin 1 to 30 μm films | Photosensitive layers, laser direct imaging, 3D lithography, visible-light and laser-capable precision imaging |
| 최적의 첫 화면 파장 논리 | Strong long-wave UV response at 350 to 380 nm | 365nm에서 높은 감도 | UV, visible light, or suitable laser irradiation |
| Main first-fit problem | Darker or harder-to-penetrate imaging systems | Ultra-thin black-sensitive or colored films needing strong 365 nm response | Precision imaging platforms with visible-light or laser exposure |
| Useful first applications | Printing plates, darker photoresist, pigmented imaging photopolymers | Thin dry film, black-sensitive imaging layers, display-style thin films | Laser direct imaging, precision photosensitive layers, advanced imaging routes |
369가 더 나은 선택일 때
369 should move to the front when the real risk is cure-through in a darker or optically harder imaging system, not just basic thin-film sensitivity. Longchang’s current 369 product page directly supports use in 포토레지스트, 솔더 마스크 잉크, 이미징 응용 분야용 광중합체, 그리고 printing plates. The same page also states that 369 is especially suitable for pigmented UV-curable systems and captures 350~380nm의 장파 자외선.
That usually makes 369 the better first sample when:
- the imaging layer is darker, more pigmented, or harder for light to penetrate
- the team wants more confidence in long-wave response before broadening the screen
- the project sits close to printing-plate imaging, photoresist, or solder-mask-adjacent work
- the main concern is not only speed at 365 nm, but whether the energy reaches where it needs to go
If the bottleneck is penetration in a demanding imaging layer, 369 is usually the more defensible first move.
1206이 더 적합할 때
1206 should lead the shortlist when the system behaves like a high-sensitivity 365 nm thin-film job and the buyer needs a route that is explicitly supported for black-pigment-sensitive 또는 colored imaging layers. Longchang’s current 1206 product page states that the product has 365nm 파장에 대한 높은 감도, is suitable for 검정색 안료 시스템을 포함한 유색 시스템, can withstand up to 35 wt% 카본 블랙 안료, and fits 초박막 1~30μm 경화 시스템. The same page also supports application fit in TFT-LCD color filters, 감광성 잉크, 그리고 전자 재료 잉크.
That pushes 1206 forward when:
- the line is centered on a 365 nm process window
- the film build is very thin and image sensitivity matters more than deep cure-through
- black pigment burden is a real screening issue
- the buyer wants a route that behaves closer to thin display-style or precision electronic imaging layers than to a broader printing-plate system
In practical buyer language, 1206 is the first product to test when the job is thin, dark, and 365 nm-sensitive.
784번 노선이 더 강력한 노선이 될 때
784 sits in a different lane because it is directly supported for visible-light and laser-capable precision imaging롱창은 784번째 포지션을 맡고 있습니다. 감광성 층, 레이저 직접 이미징, 3차원 리소그래피, and other high-value imaging routes. The current product page also states that curing can be carried out under 자외선, 가시광선 또는 적절한 레이저 조사. That makes 784 the strongest first route when the process is no longer just a conventional UV photoresist benchmark.
784는 다음과 같은 경우에 더 빨리 관심을 가져야 합니다.
- laser direct imaging is part of the real manufacturing route
- the process needs visible-light response rather than only conventional UV matching
- the team is qualifying a higher-precision photosensitive layer
- the line is closer to advanced electronic imaging or information-storage-style patterning than to standard printing-plate exposure
If the real selection problem is platform change, not only pigment burden, 784 usually becomes the better lead candidate.
구매자가 샘플을 요청하기 전에 선택해야 할 사항
1. Start with the exposure platform, not the product list
Ask first whether the line is a 365 nm thin-film route, a darker long-wave cure-through problem, or a visible-light or laser imaging platform. That one decision often removes half the shortlist.
2. Keep optical difficulty visible
Dark or pigment-loaded imaging layers should not be screened the same way as cleaner thin-film systems. Cure-through pressure matters.
3. Separate thin-film sensitivity from precision-platform fit
A product that is excellent for ultra-thin 365 nm imaging is not automatically the best first screen for a laser-oriented precision imaging line.
4. Do not collapse printing-plate and precision-imaging logic into one bucket
369 and 784 can both appear in imaging discussions, but the buyer problem they solve first is different. One is usually about harder penetration and long-wave response, while the other is more often about visible-light or laser-route precision.
5. 첫 번째 실험 라운드를 긴장감 넘치게 진행하세요.
For many teams, the cleanest first round is one long-wave dark-system benchmark, one 365 nm black-sensitive thin-film benchmark, and one visible-light or laser benchmark only when the platform actually needs it.
롱창 추천 상품 및 기사 경로
- Long-wave dark imaging route: 광개시제 369
- 365 nm thin black-sensitive route: 광개시제 1206
- Visible-light or laser route: 광개시제 784
- 관련 애플리케이션 페이지: Photoinitiator for Dry Film Photoresist
- 관련 애플리케이션 페이지: Photoinitiator for Flexographic Plates
- 관련 애플리케이션 페이지: 레이저 직접 이미징용 광개시제
자주 묻는 질문
Which photoinitiator is best for dark photoresist?
It depends on what “dark” means in the actual process. 369 is usually the stronger first screen when the key problem is long-wave cure-through in darker or harder imaging layers, while 1206 is often better when the system is ultra-thin, black-sensitive, and strongly tied to 365 nm response.
When should buyers start with 1206 instead of 369?
Start with 1206 when the line is built around 365 nm exposure, ultra-thin films, and black-sensitive or colored imaging layers where high sensitivity matters more than longer-wave penetration.
784는 언제 최종 후보 명단에 포함되어야 할까요?
784 belongs in the shortlist when visible-light curing, laser direct imaging, or precision photosensitive-layer qualification is central to the process.
Are 369, 1206, and 784 interchangeable?
No. They overlap broadly in photoimaging discussions, but their company-supported wavelength logic, application positioning, and first-fit use cases are different enough that buyers should not treat them as plug-and-play substitutes.
Need a tighter shortlist for dark imaging work?
If your team is screening darker photoresist, black-sensitive imaging layers, or laser-oriented imaging routes, define the real bottleneck first: penetration, 365 nm thin-film sensitivity, 또는 visible-light or laser precision. That usually points to the right Longchang product path much faster than starting from a generic imaging-grade list.