Steven Suffoletto
Steven Suffoletto
  • 88
  • 281 363
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)
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
Paper Cutting - Yield & Grain
zhlédnutí 568Před 3 lety
Paper Cutting - Yield & Grain
Xerography 6 Steps
zhlédnutí 3,5KPřed 3 lety
Xerography 6 Steps
Measurements_Metric Units
zhlédnutí 135Před 3 lety
Measurements_Metric Units
Ryobi 3302 M
zhlédnutí 9KPřed 3 lety
Ryobi 3302 M
Trigonometry for Printing
zhlédnutí 234Před 3 lety
Trigonometry for Printing
Register Consistency Test - Results with Photos
zhlédnutí 157Před 3 lety
Register Consistency Test - Results with Photos
Printing Processes Technology
zhlédnutí 22KPřed 3 lety
Printing Processes Technology
Print Production Workflow_3 P's
zhlédnutí 1,3KPřed 3 lety
Print Production Workflow_3 P's
Printing Press_6 Major Systems
zhlédnutí 8KPřed 3 lety
Printing Press_6 Major Systems
The Printing Industry_Introduction
zhlédnutí 225Před 3 lety
The Printing Industry_Introduction
Gate Folds_Open-Closed
zhlédnutí 71Před 3 lety
Gate Folds_Open-Closed
Baum Paper Folder
zhlédnutí 168Před 4 lety
Baum Paper Folder
Hair Color GCR 3of3
zhlédnutí 243Před 4 lety
Hair Color GCR 3of3

Komentáře

  • @paulafigueroa1354
    @paulafigueroa1354 Před 24 dny

    Thank you! from Guatemala

  • @MuriloAIto
    @MuriloAIto Před 3 měsíci

    Profound content! Thank you!

  • @davewickizer4506
    @davewickizer4506 Před 4 měsíci

    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

  • @chrislemery8178
    @chrislemery8178 Před 5 měsíci

    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.

  • @tads5935
    @tads5935 Před 6 měsíci

    How do I get parts

  • @iloveindia2366
    @iloveindia2366 Před 6 měsíci

    I want job sir Iam ryobi machine operator

  • @aseel7845
    @aseel7845 Před 7 měsíci

    thank you SO much

  • @SachinPatil-yz1qm
    @SachinPatil-yz1qm Před 7 měsíci

  • @robertwyeth7748
    @robertwyeth7748 Před 7 měsíci

    Thank you for your Ryobi videos. Is your program still offered?

  • @godfreyadede1975
    @godfreyadede1975 Před 7 měsíci

    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

  • @33Trillion
    @33Trillion Před 7 měsíci

    Please if I want to expose plate with sun how many minutes should it be please I need info on that

  • @charlietrinidad5122
    @charlietrinidad5122 Před 8 měsíci

    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.

  • @cyber-kkenya392
    @cyber-kkenya392 Před 9 měsíci

    Thank you for this video

  • @jillkristich3146
    @jillkristich3146 Před 9 měsíci

    thank you

  • @mrazadkhan9602
    @mrazadkhan9602 Před 9 měsíci

    Thanks you very much Dear

  • @mrazadkhan9602
    @mrazadkhan9602 Před 9 měsíci

    Thanks you very much Dear

  • @rataviciosa5198
    @rataviciosa5198 Před 10 měsíci

    Can you make something similar but with the different cardboard sheets? It's the same.math?😮

  • @hassinagoudjil8121
    @hassinagoudjil8121 Před 10 měsíci

    Hello sir, how can I contact you please? I need to order some

  • @dorismartinez5713
    @dorismartinez5713 Před 11 měsíci

    American Fuji Seal also offers Flexo-printing! Really good quality…nice facility in North Carolina.

  • @harrislopes5208
    @harrislopes5208 Před 11 měsíci

    It would be helpful if you give in range in which it should be

  • @stever4181
    @stever4181 Před rokem

    I use to love mixing ink.

  • @stever4181
    @stever4181 Před rokem

    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.

  • @thebigsleepavalanche7084

    Shout out to ECC in Buffalo NY. I almost choked on my coffee when i heard that

  • @123tobiiboii123
    @123tobiiboii123 Před rokem

    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.

  • @thanhdatnguyen2287
    @thanhdatnguyen2287 Před rokem

    Great presentation so clearly!

  • @cksudharshancksudharshan4573

    Sir, How we remove the bolt and it set sleped in blanket cylinder adjustment bolt RYOBI 2800 machine

  • @WLange-pp1dk
    @WLange-pp1dk Před rokem

    A very, very good summary! Thanks a lot!

  • @omangmutamar-uv1pc
    @omangmutamar-uv1pc Před rokem

    I wish i had a printing machine

  • @asishmal1477
    @asishmal1477 Před rokem

    Ki size ki price

  • @Manlam-mrlam
    @Manlam-mrlam Před rokem

    This printing press looks like a b dick

  • @onniesprintonnie1486

    Steve my problem is the machine stays on lerge with out feedig papef

    • @stever4181
      @stever4181 Před rokem

      Lerge? Please rephrase your question.

  • @shivprintersmahwa5914

    Ruby offset printing machine

  • @fmforhad3593
    @fmforhad3593 Před rokem

    brother

  • @sumanchakraborty772

    Sir ji apsa milna chitihu

  • @weirdsciencetv4999
    @weirdsciencetv4999 Před rokem

    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?

  • @weirdsciencetv4999
    @weirdsciencetv4999 Před rokem

    Do you know where one can attain bimetal offset plates?

  • @ryananthony4840
    @ryananthony4840 Před rokem

    I have one, and an AB Dick 9840

  • @ryananthony4840
    @ryananthony4840 Před rokem

    Ruby-lith!!! Haven't seen that in DECADES!

  • @jcdineshacharya2681

    Hi how to adjust a run vacuum paper feeding please suggest me 3200 CD

  • @herlinaherlina2300
    @herlinaherlina2300 Před rokem

    Thank you

  • @mathioffset4357
    @mathioffset4357 Před rokem

    You contact number

  • @laxmanmangelkar1357

    VERY GOOD VIDEO SIR ,

  • @josephnemish5869
    @josephnemish5869 Před rokem

    Excellent video sir. Been printing for 10 years and still learning. Well done video man

  • @xXdaniellolXx
    @xXdaniellolXx Před rokem

    Great video, could you share the slides with us?

  • @iloveindia2366
    @iloveindia2366 Před rokem

    Sir I want job iam a operetor ryobi machine

  • @stevensuffoletto3700

    September 2022 the Printing Program was eliminated due to lack of student enrollment. Covid had an impact the last 2 years.

  • @Mixytelle
    @Mixytelle Před rokem

    Merci beaucoup!

  • @user-hc9rt3sd1l
    @user-hc9rt3sd1l Před rokem

    محتاج واحدة

  • @omprakashsahu8409
    @omprakashsahu8409 Před rokem

    सर रेट बताएं और नंबर भी दो

  • @marciohogenelst
    @marciohogenelst Před rokem

    Please, could you send me the apresentation ? regards