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Evidence Guide: ICPSCP233 - Manually prepare direct emulsion stencil

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

ICPSCP233 - Manually prepare direct emulsion stencil

What evidence can you provide to prove your understanding of each of the following citeria?

Prepare work area and equipment

  1. Work area is made clean and functional prior to commencement of work
  2. All equipment is inspected to ensure it is functional and, where necessary, appropriate remedial action is taken prior to commencement of work
  3. Appropriate coating trough is selected, ensuring it is free of nicks and burrs
Work area is made clean and functional prior to commencement of work

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

All equipment is inspected to ensure it is functional and, where necessary, appropriate remedial action is taken prior to commencement of work

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Appropriate coating trough is selected, ensuring it is free of nicks and burrs

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prepare screen

  1. Screen is selected according to job specifications
  2. Chemicals are applied and removed according to work health and safety (WHS) requirements and manufacturer or supplier specifications
  3. Tension of screen mesh is checked for suitability according to job specifications
Screen is selected according to job specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Chemicals are applied and removed according to work health and safety (WHS) requirements and manufacturer or supplier specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Tension of screen mesh is checked for suitability according to job specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Select emulsion

  1. Emulsion is selected according to requirements for ink type, print resolution, substrate, mesh type and machine type
  2. Emulsion is checked for expiry date and appropriate action taken
  3. Emulsion is prepared according to WHS requirements and manufacturer or supplier specifications
  4. Emulsion is applied and dried according to manufacturer or supplier specifications
Emulsion is selected according to requirements for ink type, print resolution, substrate, mesh type and machine type

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Emulsion is checked for expiry date and appropriate action taken

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Emulsion is prepared according to WHS requirements and manufacturer or supplier specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Emulsion is applied and dried according to manufacturer or supplier specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Process coated screen

  1. Image films are appropriately positioned onto prepared screen and positioned in cleaned, prepared and appropriate exposure device
  2. Light source is positioned according to manufacturer or supplier specifications
  3. Exposure is calculated and stencil exposed according to manufacturer or supplier specifications
  4. Exposed screen is removed from vacuum frame exposure device
  5. Exposed screen is washed out after positive removal according to WHS requirements and manufacturer or supplier specifications
  6. Processed stencil or screen is inspected for flaws and scum
Image films are appropriately positioned onto prepared screen and positioned in cleaned, prepared and appropriate exposure device

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Light source is positioned according to manufacturer or supplier specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Exposure is calculated and stencil exposed according to manufacturer or supplier specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Exposed screen is removed from vacuum frame exposure device

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Exposed screen is washed out after positive removal according to WHS requirements and manufacturer or supplier specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Processed stencil or screen is inspected for flaws and scum

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Dry stencil

  1. Processed stencil is dried according to manufacturer or supplier specifications
  2. Backing sheet is carefully removed and stencil checked for full adhesion
Processed stencil is dried according to manufacturer or supplier specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Backing sheet is carefully removed and stencil checked for full adhesion

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Block out screen

  1. Backing sheet is carefully removed and stencil checked for full adhesion
  2. Stencil is inspected for flaws, scum and orientation
  3. Pinholes are spotted out with suitable filler and taped according to ink type and job specifications
Backing sheet is carefully removed and stencil checked for full adhesion

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Stencil is inspected for flaws, scum and orientation

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Pinholes are spotted out with suitable filler and taped according to ink type and job specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Store screen

  1. Prepared screen is labelled according to enterprise procedures
  2. Prepared screen is stored in clean, dry environment according to manufacturer or supplier specifications
Prepared screen is labelled according to enterprise procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prepared screen is stored in clean, dry environment according to manufacturer or supplier specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

ELEMENT

PERFORMANCE CRITERIA

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1 Prepare work area and equipment

1.1 Work area is made clean and functional prior to commencement of work

1.2 All equipment is inspected to ensure it is functional and, where necessary, appropriate remedial action is taken prior to commencement of work

1.3 Appropriate coating trough is selected, ensuring it is free of nicks and burrs

2 Prepare screen

2.1 Screen is selected according to job specifications

2.2 Chemicals are applied and removed according to work health and safety (WHS) requirements and manufacturer or supplier specifications

2.3 Tension of screen mesh is checked for suitability according to job specifications

3 Select emulsion

3.1 Emulsion is selected according to requirements for ink type, print resolution, substrate, mesh type and machine type

3.2 Emulsion is checked for expiry date and appropriate action taken

3.3 Emulsion is prepared according to WHS requirements and manufacturer or supplier specifications

3.4 Emulsion is applied and dried according to manufacturer or supplier specifications

4 Process coated screen

4.1 Image films are appropriately positioned onto prepared screen and positioned in cleaned, prepared and appropriate exposure device

4.2 Light source is positioned according to manufacturer or supplier specifications

4.3 Exposure is calculated and stencil exposed according to manufacturer or supplier specifications

4.4 Exposed screen is removed from vacuum frame exposure device

4.5 Exposed screen is washed out after positive removal according to WHS requirements and manufacturer or supplier specifications

4.6 Processed stencil or screen is inspected for flaws and scum

5 Dry stencil

5.1 Processed stencil is dried according to manufacturer or supplier specifications

5.2 Backing sheet is carefully removed and stencil checked for full adhesion

6 Block out screen

6.1 Backing sheet is carefully removed and stencil checked for full adhesion

6.2 Stencil is inspected for flaws, scum and orientation

6.3 Pinholes are spotted out with suitable filler and taped according to ink type and job specifications

7 Store screen

7.1 Prepared screen is labelled according to enterprise procedures

7.2 Prepared screen is stored in clean, dry environment according to manufacturer or supplier specifications

Required Skills and Knowledge

ELEMENT

PERFORMANCE CRITERIA

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1 Prepare work area and equipment

1.1 Work area is made clean and functional prior to commencement of work

1.2 All equipment is inspected to ensure it is functional and, where necessary, appropriate remedial action is taken prior to commencement of work

1.3 Appropriate coating trough is selected, ensuring it is free of nicks and burrs

2 Prepare screen

2.1 Screen is selected according to job specifications

2.2 Chemicals are applied and removed according to work health and safety (WHS) requirements and manufacturer or supplier specifications

2.3 Tension of screen mesh is checked for suitability according to job specifications

3 Select emulsion

3.1 Emulsion is selected according to requirements for ink type, print resolution, substrate, mesh type and machine type

3.2 Emulsion is checked for expiry date and appropriate action taken

3.3 Emulsion is prepared according to WHS requirements and manufacturer or supplier specifications

3.4 Emulsion is applied and dried according to manufacturer or supplier specifications

4 Process coated screen

4.1 Image films are appropriately positioned onto prepared screen and positioned in cleaned, prepared and appropriate exposure device

4.2 Light source is positioned according to manufacturer or supplier specifications

4.3 Exposure is calculated and stencil exposed according to manufacturer or supplier specifications

4.4 Exposed screen is removed from vacuum frame exposure device

4.5 Exposed screen is washed out after positive removal according to WHS requirements and manufacturer or supplier specifications

4.6 Processed stencil or screen is inspected for flaws and scum

5 Dry stencil

5.1 Processed stencil is dried according to manufacturer or supplier specifications

5.2 Backing sheet is carefully removed and stencil checked for full adhesion

6 Block out screen

6.1 Backing sheet is carefully removed and stencil checked for full adhesion

6.2 Stencil is inspected for flaws, scum and orientation

6.3 Pinholes are spotted out with suitable filler and taped according to ink type and job specifications

7 Store screen

7.1 Prepared screen is labelled according to enterprise procedures

7.2 Prepared screen is stored in clean, dry environment according to manufacturer or supplier specifications

Evidence of the ability to:

prepare TWO different direct screens and TWO direct emulsion stencils using manual coating and exposure techniques according to manufacturer and job specifications, enterprise procedures and work health and safety (WHS) requirements.

Note: If a specific volume or frequency is not stated, then evidence must be provided at least once.

To complete the unit requirements safely and effectively, the individual must:

explain the significance of the mesh count

explain the effect that screen tension has on emulsion coating

explain how to determine the emulsion suitable for the job

explain the significance of good housekeeping in the preparation of the work area and equipment

describe the effect that the coating trough edge has on emulsion coating

explain the requirements for choosing emulsion for a particular job

explain the reasons for checking the expiry date of emulsions

determine the maximum temperature at which the emulsion can be dried

explain the need to have good vacuum pressure in the vacuum frame

outline the process for selecting the light source position

explain the formula used to calculate exposure time

explain the effects of overexposure and underexposure

explain how the optimum exposure time is determined

describe the effect on exposure that a white or coloured mesh has

determine how the screen is washed out properly

identify the characteristics that determine a good and bad stencil

explain why the screen is dried before blocking out

explain what determines the type of filler used for blocking out

explain the reasons for spotting pinholes and taping the screen

determine the WHS requirements for UV exposure light

explain the means by which stored screens are able to be identified at a later date

identify required manuals, safety and other documentation and briefly outline the relevant information in each source.