![Steven Suffoletto](/img/default-banner.jpg)
- 88
- 281 363
Steven Suffoletto
United States
Registrace 1. 12. 2019
Steve Suffoletto demonstrations of various tasks related to operating a Ryobi 2800 printing press for SUNY Erie (ECC.edu) in Buffalo, NY.
Visual Color Assessment
Discusses the basic workflow to visually assess color, classify accuracy of match (Same, Close, Different), and describe verbally how the color is different (Lighter-Darker, Cleaner-Dirtier, Colder-Warmer). Also, how Pass/Fail tolerance limits should be determined.
(C) 2022 Suffoletto
Time Topic
0:38 Advantages
2:03 Disadvantages
2:47 Light & View Conditions
3:39 Paired Comparison
5:02 Color Communication
5:38 Degree of Color Match (Accuracy)
7:19 How is it Different (Adjectives)
8:55 Light-Darker (L*)
10:06 Clean-Dirty (C*)
11:33 Cold-Warm (h')
13:14 Color by Numbers
14:09 Correlation Metrics
14:48 Spot Color Delta E
16:35 Tolerance Limits
17:22 "Should" pronunciation :-)
18:01 Closing
19:09 Thank You (End)
(C) 2022 Suffoletto
Time Topic
0:38 Advantages
2:03 Disadvantages
2:47 Light & View Conditions
3:39 Paired Comparison
5:02 Color Communication
5:38 Degree of Color Match (Accuracy)
7:19 How is it Different (Adjectives)
8:55 Light-Darker (L*)
10:06 Clean-Dirty (C*)
11:33 Cold-Warm (h')
13:14 Color by Numbers
14:09 Correlation Metrics
14:48 Spot Color Delta E
16:35 Tolerance Limits
17:22 "Should" pronunciation :-)
18:01 Closing
19:09 Thank You (End)
zhlédnutí: 598
Video
Inks x Filters = Density
zhlédnutí 408Před 2 lety
Discusses how density of an ink is determined by the complementary or opposite filter color. Status T densitometry uses Kodak Wratten filters #25 Red for Cyan, #58 Green for Magenta, and #47 Blue for Yellow. Density is Darkness, NOT Color! D = -log R 0:48 Wavelengths nanometers 1:52 Inks 2:54 Filters 4:12 Status T & E 4:50 Neutral Density (ND) 6:55 Ink Film Thickness (IFT) 7:47 End
Press Speed Conversions
zhlédnutí 194Před 2 lety
Explains how to convert printing press speed units from any this unit to any that unit. Sheetfed is slower and web (roll) is faster.
Basics of Halftone Screening
zhlédnutí 7KPřed 3 lety
Brief and basic discussion about 4 characteristics of Halftone screening, Size (H,M,S), Shape (Square, Round, Elliptical), Spacing (lpi ruling), and Slope (angle). Also, AM, FM, XM, and Tone Reproduction Curves (TRC), Dot Gain curves (TVI), moire and rosette patterns. Copyrighted (c) 2021 to protect Intellectual Property (IP).
Inks
zhlédnutí 2,5KPřed 3 lety
Discussion about printing inks functionality (transfer, dry, adhere), formula, ingredients (pigment, vehicle), physical (tack, IFT) and optical (color, transparency, gloss) properties.
Rollers_Meter & Distribute
zhlédnutí 1,6KPřed 3 lety
Discussion about rollers metering and distributing ink in lithography. Metering is local by blade keys and global by ball/ductor sweep or stroke. Discuss motion of ductor and vibrator/oscillator roller, and diameter size of ink forms.
Test Questions
zhlédnutí 769Před 3 lety
A review of the correct answers to 90 questions from 9 quizzes for Litho Press 1 from Fall of 2020. Reference is a Ryobi 2800 sheetfed offset lithographic printing press. Some question are specific to a particular laboratory project. Quiz/Time: 1_0:30, 2_4:35, 3_9:50, 4_14:15, 5_19:55, 6_24:45, 7_29:36, 8_37:42, 9_42:44.
Rods & Cones
zhlédnutí 346Před 3 lety
Discussion about how the iris and pupil of the eye act like the f/stop # aperture of a camera lens and how the photoreceptors inside the human eye are similar to film. Discuss Photopic & Scotopic as well as peripheral vision. Discuss Photometry Brightness with CIE L* and how Munsell Value is a uniform color scale or space.
Trap = Prepress & Press
zhlédnutí 552Před 3 lety
Brief, basic discussion about Trap in both prepress (horizontal image overlap) and press (vertical ink stacking) context. For press, also wet and dry trapping.
Ink Color = Process & Spot
zhlédnutí 378Před 3 lety
Brief, simple discussion about different types of ink colors, Process & Spot.
Image = Solid & Screen
zhlédnutí 226Před 3 lety
Brief, basic discussion about 2 different types of Images, Solids & Screens.
Register Adjustments = 3 Directions
zhlédnutí 281Před 3 lety
Discuss the 3 directions of a register adjustment, horizontal (side-side), vertical (up-down), and diagonal (slanted).
Register = External & Internal
zhlédnutí 155Před 3 lety
Discuss External register (Position, sheet to press) and Internal register (Fit, color to color).
Tonal Metrics - Table
zhlédnutí 221Před 3 lety
This supplements a previously posted video titled "Physics of Light." We fill out a Tonal Metric table that lists %R, %A, Density, % Dot Area, Pixel Value and L* for white, gray, and black. D=-logR and R=10^-D.
Physics of Light
zhlédnutí 289Před 3 lety
Discusses mostly the physical aspects of light (Source) and its' interaction with matter (Object), to prepare us for a later discussion about the human sensation (Observer) of color. See a separate CZcams video for detail conversation about converting light reflectance into optical density.
Convert % Reflection into Density_Table & Log Curve
zhlédnutí 179Před 3 lety
Convert % Reflection into Density_Table & Log Curve
Comparison of Traditional vs Digital Printing
zhlédnutí 1,6KPřed 3 lety
Comparison of Traditional vs Digital Printing
Register Consistency Test - Results with Photos
zhlédnutí 157Před 3 lety
Register Consistency Test - Results with Photos
Thank you! from Guatemala
Profound content! Thank you!
We had one in oir shop and it was great for small jobs. Always wondered if it was still going somewhere. It saved me on a big account when i was tied up on the 36" and needed some small help. Easy to run once you get on to it
Great video! I'm having an interview for a flexo position in 2 hours. I've been a newspaper printer for over 20 years and would really like to get into this type of printing instead.
How do I get parts
I want job sir Iam ryobi machine operator
thank you SO much
❤
Thank you for your Ryobi videos. Is your program still offered?
i have been in printing industry for the last 14 years, especially in Offset Lithography but today as i followed this video i have been refreshed and now am geared towards FLEXOGRAPHY ..........bravooooo
Please if I want to expose plate with sun how many minutes should it be please I need info on that
I'm about to start my first job in flexo printing, I've been studying and watching many videos but this is the best!! Very educational and informational, thank you very much sir.
Thank you for this video
thank you
Thanks you very much Dear
Thanks you very much Dear
Can you make something similar but with the different cardboard sheets? It's the same.math?😮
Hello sir, how can I contact you please? I need to order some
American Fuji Seal also offers Flexo-printing! Really good quality…nice facility in North Carolina.
It would be helpful if you give in range in which it should be
I use to love mixing ink.
Where the sheet separators are there is a square with a line in it. Adjust the pile height until the paper comes to the line. Then adjust the air until the paper comes to the sheet separators. This will get you in a very close ballpark and small adjustments can be made from here. I was a Service Engineer on these machine for 20 years.
Shout out to ECC in Buffalo NY. I almost choked on my coffee when i heard that
Thank you for these resources, they're so invaluable. I'm a graphic designer and have always had a good knowledge of print but it's so nice to really see it be done and clearly represented step by step. I've recently been getting into printmaking lithography and it's interesting to see that arabic gum remains relevant even in the offset world.
Great presentation so clearly!
Sir, How we remove the bolt and it set sleped in blanket cylinder adjustment bolt RYOBI 2800 machine
A very, very good summary! Thanks a lot!
I wish i had a printing machine
Ki size ki price
This printing press looks like a b dick
Steve my problem is the machine stays on lerge with out feedig papef
Lerge? Please rephrase your question.
Ruby offset printing machine
brother
Sir ji apsa milna chitihu
Wow this is a gem of YT channel! Subscribed!! Also, where can I find a good text on printing in general? I want to learn all this, I also want to starting making my own presses and prints as I go. What better way to learn than by replicating all that?
Do you know where one can attain bimetal offset plates?
I have one, and an AB Dick 9840
Ruby-lith!!! Haven't seen that in DECADES!
Hi how to adjust a run vacuum paper feeding please suggest me 3200 CD
Thank you
You contact number
VERY GOOD VIDEO SIR ,
Excellent video sir. Been printing for 10 years and still learning. Well done video man
Great video, could you share the slides with us?
Sir I want job iam a operetor ryobi machine
September 2022 the Printing Program was eliminated due to lack of student enrollment. Covid had an impact the last 2 years.
Merci beaucoup!
محتاج واحدة
सर रेट बताएं और नंबर भी दो
Please, could you send me the apresentation ? regards